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Tytuł:
Interakcje międzykulturowe w filii niemieckiej korporacji działającej w Polsce – studium przypadku
Intercultural interactions in the German subsidiary operating in Poland. Case study
Autorzy:
Przytuła, Sylwia
Powiązania:
https://bibliotekanauki.pl/articles/419727.pdf
Data publikacji:
2015
Wydawca:
Wydawnictwo Uniwersytetu Ekonomicznego we Wrocławiu
Tematy:
intercultural interactions
corporation
expatriates
Opis:
Development and geographical expansion of multinational corporations makes it more complex and more often we are dealing with cultural diversity within teams of employees. Mutual cooperation of foreigners and local staff raises many intercultural interactions, both negative and positive. The purpose of this article is to identify the benefits and weaknesses arising from intercultural interactions between foreigners and local staff in the German subsidiary operating in Poland. The research procedure was a case study and a method was 12 structured interviews with Polish managers. Research problems concerned the general perception of Polish managers in relation to cooperation with foreigners. The respondents indicated the benefits and problems of this cooperation, as well as practical guidance (advice) to improve these interactions. This case study enriched the empirical achievements in the area of the new trend in management sciences, which is the positive organizational scholarship (POS).
Źródło:
Nauki o Zarządzaniu; 2015, 1 (22); 54-70
2080-6000
Pojawia się w:
Nauki o Zarządzaniu
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Inorganic nanoparticles on bacteria: the key factors ruling the interaction
Autorzy:
Duch, J.
Gołda-Cępa, M.
Ciura, K.
Kotarba, A.
Powiązania:
https://bibliotekanauki.pl/articles/285095.pdf
Data publikacji:
2017
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
Tematy:
nanoparticles
electrostatic interactions
biosynthesis
Źródło:
Engineering of Biomaterials; 2017, 20, no. 143 spec. iss.; 29
1429-7248
Pojawia się w:
Engineering of Biomaterials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Determinants of poverty – binary logit model with interaction terms approach
Autorzy:
Dudek, Hanna
Lisicka, Iga
Powiązania:
https://bibliotekanauki.pl/articles/425268.pdf
Data publikacji:
2013
Wydawca:
Wydawnictwo Uniwersytetu Ekonomicznego we Wrocławiu
Tematy:
poverty
household
logit model
interactions
Opis:
The problem of monetary aspect of welfare in employees’ household was undertaken in this paper. In order to identify the households in danger of poverty, the binary logit models approach was applied. It was found that the estimation of models without the interaction terms results in misspecification error. Due to this, the interaction terms, between the socio-economic factors of households were included in the model. The obtained results can have significant importance in the aspect of social policy in Poland.
Źródło:
Econometrics. Ekonometria. Advances in Applied Data Analytics; 2013, 3(41); 65-77
1507-3866
Pojawia się w:
Econometrics. Ekonometria. Advances in Applied Data Analytics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Computational Investigation of Amine Complexes of 2,4,6-Trinitrotoluene
Autorzy:
Politzer, P.
Murray, J. S.
Koppes, W. M.
Concha, M. C.
Lane, P.
Powiązania:
https://bibliotekanauki.pl/articles/358818.pdf
Data publikacji:
2009
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
Tematy:
trinitrotoluene
amine interactions
hypergolic reactions
Opis:
Using the B3PW91/6-31G(d) computational procedure, we fnd two types of complexes to be formed between aliphatic amines and 2,4,6-trinitrotoluene (TNT). Type 1 are noncovalent, primarily electrostatic interactions that occur in the vicinities of the NO2 groups; Type 2 are δ-adducts, at carbons 1, 3 and 5. In Type 1, the TNT framework is very little affected. In Type 2, however, the site of the complex becomes quasi-tetrahedral, with longer bonds to its neighbors in the ring; the C-NO2 bonds are shortened. The Type 1 complexes have weakly negative (attractive) interaction enthalpies. For one of them, utilizing a chargetransfer formalism, we obtained a wave length for an electronic transition to a low-lying dative excited state that is in good agreement with observed values. The Type 2 interaction enthalpies are near-zero or even positive; however all of the complexes correspond to energy minima (no imaginary frequencies). For one of the Type 2, a transition state to a nitronic acid was found, with an activation enthalpy of only 5.6 kcal/mole. This indicates a possible route for amine-induced decomposition of TNT.
Źródło:
Central European Journal of Energetic Materials; 2009, 6, 2; 167-182
1733-7178
Pojawia się w:
Central European Journal of Energetic Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Gender and Teacher-student Interactions in Botswanan Junior Secondary School PE Classes
Autorzy:
Shehu, Jmoh
Motsumi, Lebogang
Powiązania:
https://bibliotekanauki.pl/articles/2159492.pdf
Data publikacji:
2021-12-31
Wydawca:
Politechnika Opolska. Wydział Wychowania Fizycznego i Fizjoterapii
Tematy:
gender
physical education
classroom interactions
Opis:
The aim of this study was to investigate the association between students’ gender and teacher-student interactions in a sample of Botswanan junior secondary school Physical Education lessons. Ninety-six lessons taught by male and female physical education teachers were observed, coded, and analysed for gendered interaction patterns. Chi-square test of independence was used for data analysis. The level of statistical significance was set at p <. 05. Results reveal a statistically significant association between students’ gender and teacher-student interactions with respect to task allocation and misbehaviour management. No significant associations were found between students’ gender and teachers’ questions and feedback. The study concludes that systematic observations of pedagogical interactions in physical education settings are necessary to highlight deeply entrenched gender equity issues in co-educational classrooms. Physical education teacher preparation programmes must impress upon pre- and in-service candidates the importance of and different approaches to enacting gender-sensitive instructional practices. Providing physical education teachers with contextualized pedagogical directions and resources for analysing and addressing gender bias in their classroom will equip them to create inclusive, interactive, respectful, equitable, and productive lessons.
Źródło:
Journal of Physical Education & Health - Social Perspective; 2021, 10, 18; 5-13
2084-7971
Pojawia się w:
Journal of Physical Education & Health - Social Perspective
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Interactions of Some Organic Solvents: Hydrocarbons and Chloroalkene
Autorzy:
Skowroń, J.
Miranowicz-Dzierżawska, K.
Zapór, L.
Gołofit-Szymczak, M.
Starek, A.
Powiązania:
https://bibliotekanauki.pl/articles/90439.pdf
Data publikacji:
2001
Wydawca:
Centralny Instytut Ochrony Pracy
Tematy:
n-hexane
ethylbenzene
tetrachloroethylene
metabolic interactions
toxicodynamic interactions
interakcje metaboliczne
tetrachloroetylen
etylobenzen
Opis:
Metabolic and toxicodynamic interactions of some organic solvents in rats repeatedly treated with medium dose levels were examined. It was shown that both n-hexane and ethylbenzene significantly inhibited tetrachloroethylene metabolism during a 2-week period. n-Hexane and tetrachloroethylene enhanced metabolism of ethylbenzene whereas ethylbenzene suppressed n-hexane metabolism only at the end of the experiment. Biochemical changes, especially the drop in the level of non-protein sulfhydryl groups in tissues of rats treated with organic solvent mixtures, were significantly less pronounced than those observed after these chemicals were administered separately. These results demonstrate that metabolic interactions between hydrocarbons and chloroalkene may lead to a modification of the biological response to these compounds.
Źródło:
International Journal of Occupational Safety and Ergonomics; 2001, 7, 1; 35-47
1080-3548
Pojawia się w:
International Journal of Occupational Safety and Ergonomics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A computational approach to structural properties of glycoside hydrolase family 4 from bacteria
Autorzy:
Craciun, Dana
Vlad-Oros, Beatrice
Filimon, Nicoleta
Ostafe, Vasile
Isvoran, Adriana
Powiązania:
https://bibliotekanauki.pl/articles/1039444.pdf
Data publikacji:
2013
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
glycosidases
structural properties
specific interactions
Opis:
Structural bioinformatics approaches applied to the alpha- and beta-glycosidases from the GH4 enzyme family reveal that, despite low sequence identity, these enzymes possess quite similar global structural characteristics reflecting a common reaction mechanism. Locally, there are a few distinctive structural characteristics of GH4 alpha- and beta-glycosidases, namely, surface cavities with different geometric characteristics and two regions with highly dissimilar structural organizations and distinct physicochemical properties in the alpha- and beta-glucosidases from Thermotoga maritima. We suggest that these structurally dissimilar regions may be involved in specific protein-protein interactions and this hypothesis is sustained by the predicted distinct functional partners of the investigated proteins. Also, we predict that alpha- and beta-glycosidases from the GH4 enzyme family interact with difenoconazole, a fungicide, but there are different features of these interactions especially concerning the identified structurally distinct regions of the investigated proteins.
Źródło:
Acta Biochimica Polonica; 2013, 60, 4; 553-564
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Methionyl-tRNA synthetase.
Autorzy:
Deniziak, Marzanna
Barciszewski, Jan
Powiązania:
https://bibliotekanauki.pl/articles/1044120.pdf
Data publikacji:
2001
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
protein-protein interactions
tRNA binding
Opis:
Methionyl-tRNA synthetase (MetRS) belongs to the family of 20 enzymes essential for protein biosynthesis. It links covalently methionine with its cognate tRNA. Crystal structures solved for bacterial MetRSs have given a number of interesting insights into enzyme architecture and methionylation catalysis. A comparison of sequences of MetRSs belonging to all kingdoms of life, as well as numerous biochemical and genetic studies have revealed the presence of various additional domains appended to the catalytic core of synthetase. They are responsible for interactions with tRNA and proteins. Tertiary structure of C-terminal tRNA-binding appendices can be deduced from those determined for their homologues: tRNA binding protein 111 and endothelial monocyte-activating polypeptide II. Contacts between MetRS and other proteins could be mediated not only by noncatalytic peptides but also by structural elements present in the catalytic core, e.g. Arg-Gly-Asp (RGD) motifs. Additional activities involve MetRS in the maintenance of translational fidelity and in coordination of ribosome biogenesis with protein synthesis.
Źródło:
Acta Biochimica Polonica; 2001, 48, 2; 337-350
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Pyrite flotation in the presence of galena. Study on galvanic interaction
Autorzy:
Allahkarami, E.
Poor, A. Z.
Rezai, B.
Powiązania:
https://bibliotekanauki.pl/articles/110735.pdf
Data publikacji:
2017
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
flotation
galena
pyrite
galvanic interactions
Opis:
In this investigation, galvanic interaction between galena and pyrite in flotation and its effect on floatability of pyrite were studied. Rest and mixed potential studies in the presence and absence of a collector indicated that pyrite was nobler than galena under all investigated conditions. Therefore, pyrite served as a cathode in galvanic interactions with galena. Floatability of pyrite was performed alone and as a mixture with galena in the ratios of pyrite to galena equal to 1:4, 1:1 and 4:1. The experiments were conducted with air and nitrogen. In any galvanic contact between pyrite and galena, anodic oxidation occurred on the galena surface, and hydrolysed lead species adsorbed on the pyrite surface. The investigation of the various reactions occurring on the sample surface was investigated by ethylene diamine-tetra acetic acid disodium salt (EDTA) extraction and X-ray photoelectron spectroscopy (XPS) measurements. In the presence of nitrogen, floatability of pyrite increased. The recovery of pyrite in the presence of air was 22%, while in the mixture with galena (ratio 1:4) the recovery increased to 43%. The results indicated that the presence of galena improved floatability of pyrite.
Źródło:
Physicochemical Problems of Mineral Processing; 2017, 53, 2; 846-858
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Role of the host genetic variability in the influenza A virus susceptibility
Autorzy:
Arcanjo, Ana
Mazzocco, Giovanni
de Oliveira, Silviene
Plewczynski, Dariusz
Radomski, Jan
Powiązania:
https://bibliotekanauki.pl/articles/1039238.pdf
Data publikacji:
2014
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
Influenza A virus
host-pathogen interactions
Opis:
The aftermath of influenza infection is determined by a complex set of host-pathogen interactions, where genomic variability on both viral and host sides influences the final outcome. Although there exists large body of literature describing influenza virus variability, only a very small fraction covers the issue of host variance. The goal of this review is to explore the variability of host genes responsible for host-pathogen interactions, paying particular attention to genes responsible for the presence of sialylated glycans in the host endothelial membrane, mucus, genes used by viral immune escape mechanisms, and genes particularly expressed after vaccination, since they are more likely to have a direct influence on the infection outcome.
Źródło:
Acta Biochimica Polonica; 2014, 61, 3; 403-419
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Exceptional molecular organization of canthaxanthin in lipid membranes
Autorzy:
Sujak, Agnieszka
Powiązania:
https://bibliotekanauki.pl/articles/1039765.pdf
Data publikacji:
2012
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
molecular interactions
retinopathy
lipid membranes
canthaxanthin
Opis:
Canthaxanthin (β,β-carotene 4,4' dione) used widely as a drug or as a food and cosmetic colorant may have some undesirable effects on human health, caused mainly by the formation of crystals in the macula lutea membranes of the retina of an eye. Experiments show the exceptional molecular organization of canthaxanthin and a strong effect of this pigment on the physical properties of lipid membranes. The most striking difference between canthaxanthin and other macular pigments is that the effects of canthaxanthin at a molecular level are observed at much lower concentration of this pigment with respect to lipid (as low as 0.05 mol%). An analysis of the molecular interactions of canthaxanthin showed molecular mechanisms such as: strong van der Waals interactions between the canthaxanthin molecule and the acyl chains of lipids, restrictions to the segmental molecular motion of lipid molecules, modifications of the surface of the lipid membranes, effect on the membrane thermotropic properties and finally interactions based on the formation of the hydrogen bonds. Such interactions can lead to a destabilization of the membrane and loss of membrane compactness. In the case of the retinal vasculature, it can lead to an increase in the permeability of the retinal capillary walls and the development of retinopathy.
Źródło:
Acta Biochimica Polonica; 2012, 59, 1; 31-33
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Grupowe oddziaływania penitencjarne na przykładzie programu dla skazanych młodocianych „Efekt motyla”
Group Penitentiary Impact on the Example of the “Butterfly Effect” Program for Young Convicts
Autorzy:
Poklek, Robert
Powiązania:
https://bibliotekanauki.pl/articles/920463.pdf
Data publikacji:
2018-12-15
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
resocialization
penitentiary interactions
group resocialization programs
Opis:
The purpose of serving a prison sentence is not isolating but inducing the perpetrators of crimes to refrain from committing offences in the future. This is possible when there are positive changes in their attitudes, and in particular when they create a need to respect the legal order and a sense of responsibility for their actions. For this purpose, in addition to other means of influence such as work, education, social contacts, cultural and educational activities and sports, or therapy, it is proposed to the detainees to participate in group resocialization programs. The article presents an example of resocialization program dedicated to convicted juveniles entitled “Butterfly Effect”. It presents the theoretical foundations of the program, the spectrum of objectives and results, the methods to achieve them, and scenario activities.
Źródło:
Studia Edukacyjne; 2018, 51; 437-456
1233-6688
Pojawia się w:
Studia Edukacyjne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Family Life – between Charism and Institution. Signalling Multidimensionality and Complexity of Human Interactions for Business Institutions and Society
Autorzy:
Michalski, Michał
Powiązania:
https://bibliotekanauki.pl/articles/652851.pdf
Data publikacji:
2014-12
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
family
charism
institution
business
social interactions
Opis:
This paper analyses the complexity of family life, which includes both its charismatic and institutional aspects. Deepening the understanding of this basic social group can be useful in explaining how human beings in their decisions and actions, as well as organizations, unceasingly transcend different oppositions and dimensions. Undertaking this topic is not only important in the context of understanding the fundamental and complex experience of family life in the process of preparing and introducing new members to society, but also from the organizational perspective. It means that exploring the role of both dimensions – charismatic and institutional – which are somehow complementary, is crucial for understanding and harmonizing the different relationships and interactions within organizations, including business ones. In this way the article shows the connection between the functioning of the family and society (including organizations within it).
Źródło:
Annales. Etyka w Życiu Gospodarczym; 2014, 17, 4
1899-2226
2353-4869
Pojawia się w:
Annales. Etyka w Życiu Gospodarczym
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modele funkcjonowania rodziny z dzieckiem niepełnosprawnym
Models of functioning of a family with a disabled child
Autorzy:
Liberska, Hanna
Matuszewska, Mirosława
Powiązania:
https://bibliotekanauki.pl/articles/1178562.pdf
Data publikacji:
2012
Wydawca:
Uniwersytet Kazimierza Wielkiego w Bydgoszczy
Tematy:
disabled children
family interactions
family model
Opis:
The paper presents a new model of functioning of a family with a disabled child. The family is treated according to the systemic approach taking into regard the interactions and relations between its members as well as a broader environmental context (Minuchin, 1975, Hinde, 1988, van Geert, 1990). The model proposed encompasses the six fundamental dimensions of family functioning, including those of subjectivity and plasticity. The model can be applied in analyses of families with a disabled as well as a fully fit child.
Źródło:
Polskie Forum Psychologiczne; 2012, XVII, 1; 79-90
1642-1043
Pojawia się w:
Polskie Forum Psychologiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Differences in the pharmacokinetics of flumequine after single and continuous oral administration in non-fasted broiler chickens
Autorzy:
Madej-Śmiechowska, H.
Orzoł, A.
Jasiecka-Mikołajczyk, A.
Ziółkowski, H.
Jaroszewski, J.J.
Powiązania:
https://bibliotekanauki.pl/articles/2087673.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
flumequine
HPLC
interactions with feed
broiler chickens
Źródło:
Polish Journal of Veterinary Sciences; 2018, 21, 3; 631-634
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Structural, magnetic, and Mössbauer effect studies of bornite
Autorzy:
Przewoźnik, J.
Żukrowski, J.
Gondek, Ł.
Lemański, A.
Kapusta, C.
Piestrzyński, A.
Powiązania:
https://bibliotekanauki.pl/articles/147362.pdf
Data publikacji:
2013
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
bornite
hyperfine interactions
magnetic properties
Mössbauer spectroscopy
Opis:
The results of a combined study of bornite with Mossbauer spectroscopy, X-ray diffraction and DC magnetometry are reported. The orthorhombic crystallographic structure of the mineral is observed at 15 K and 300 K. It exhibits an increase of the orthorhombic distortion with decreasing temperature. Magnetic susceptibility shows a Curie-Weiss like behaviour between 230 K and 380 K corresponding to the effective magnetic moment of 7.2(3) mi B per formula unit. The material undergoes a transition to an antiferromagnetic-like state at 75 K. Mossbauer spectra at the paramagnetic range are doublets with a small quadrupole splitting and the isomer shift corresponding to a high spin Fe3+ state. Upon magnetic ordering, a coexistence of the paramagnetic doublet with a broadened magnetic sextet is observed indicating an inhomogeneous character of the magnetic transition. The hyperfine field of 350 kOe at 4.2 K is much lower than that observed for a high spin Fe3+ in oxides (510 kOe) which is attributed to covalence effects and a possible copper contribution to the effective magnetic moment of the compound.
Źródło:
Nukleonika; 2013, 58, 1; 43-46
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Inter - and inframolecular dynamics of iron porphyrins
Autorzy:
Dziedzic-Kocurek, K.
Okła, D.
Stanek, J.
Powiązania:
https://bibliotekanauki.pl/articles/147410.pdf
Data publikacji:
2013
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
EXAFS
Fe-porphyrins
molecular interactions
Mössbauer spectroscopy
Opis:
The temperature dependent Mössbauer spectroscopy and EXAFS analysis of the dynamical properties of selected iron-porphyrin derivatives: FeTPPCl and FePPIXCl has been presented. It has been shown that these iron-porphyrin properties may be modified by the outer ligands, but they are also strongly influenced by the intermolecular interactions, which are reduced in frozen solutions of the studied complexes.
Źródło:
Nukleonika; 2013, 58, 1; 7-11
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Plant medicinal products and drug interactions
Autorzy:
Ożóg, Łukasz
Aebisher, David
Bober, Zuzanna
Bartusik-Aebisher, Dorota
Powiązania:
https://bibliotekanauki.pl/articles/454688.pdf
Data publikacji:
2018
Wydawca:
Uniwersytet Rzeszowski. Wydawnictwo Uniwersytetu Rzeszowskiego
Tematy:
drug interactions
natural products
drug
therapeutic material
Opis:
Introduction. Some herbal medicinal products may be beneficial in certain respects but many can be dangerous for patients taking doctor-prescribed medications. Plant medicinal products are often taken with conventional drugs by patients. Interactions are possible between herbal medicinal products and conventional medications that can lead to toxicity due to increaseddrug plasma levels or drug treatment failure. Aim. The aim of the study was to review the study of plant medicinal products and drug interactions. Materials and method. Analysis of literature.
Źródło:
European Journal of Clinical and Experimental Medicine; 2018, 1; 37-40
2544-2406
2544-1361
Pojawia się w:
European Journal of Clinical and Experimental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
(Nie)grzeczność w dyskursie
Autorzy:
Haugh, Michael
Powiązania:
https://bibliotekanauki.pl/articles/2164554.pdf
Data publikacji:
2022-12-15
Wydawca:
Uniwersytet Warszawski i Uniwersytet Rzeszowski
Tematy:
politeness
impoliteness
pragmatics
language and social interactions
Opis:
In this article we focus on what discourse analysis brings to (im)politeness research. The paper begins by considering in more detail what is (im)politeness and why studying it in discourse is important. We then review some of the main approaches of discourse analysis that are employed in (im)politeness research. This is followed by two sample studies that illustrate some of the key challenges we face when analysing (im)politeness across different languages or different varieties of the same language. It can be seen that the shift in how (im)politeness is theorised over the past two decades has been accompanied by a move towards anchoring the analysis of (im)politeness in discourse. (Im)politeness is not something that should be attached to single utterances and its dynamic nature in discourse is what drives, in part, variability in evaluations of (im)politeness amongst users. It is also necessary to systematically examine not only whose understanding of politeness we are examining, but also on what grounds those understandings arise.
Źródło:
tekst i dyskurs - text und diskurs; 2022, 16; 195-214
1899-0983
Pojawia się w:
tekst i dyskurs - text und diskurs
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Role of healthcare professionals in drug-drug interactions and clinical interventions
Autorzy:
Siddiqui, Durr-e-Shahwar
Powiązania:
https://bibliotekanauki.pl/articles/2211406.pdf
Data publikacji:
2023-03-25
Wydawca:
Uniwersytet Rzeszowski. Wydawnictwo Uniwersytetu Rzeszowskiego
Tematy:
clinical interventions
drug-drug interactions
healthcare professionals
Opis:
Introduction and aim. Healthcare professionals including prescribers, pharmacists and nurses must have adequate knowledge of drug-drug interactions because they can cause toxicity, loss of efficacy, and side effects. This study was aimed to assess the respective roles of healthcare professionals in preventing drug-drug interactions by clinical interventions. Material and methods. This study was conducted at a Secondary Care Hospital of Pakistan in which total 1000 prescriptions were assessed for drug-drug interactions. Questionnaires and descriptive statistics were tools to assess the satisfaction of prescribers with pharmacists and their own prescribed medications before and after the clinical interventions. Modifications in medication therapies were done accordingly after the evaluation and acceptance of interventions. Results. The p-value was highly significant (p<0.05) which showed that the collaboration between healthcare professionals is necessary to avoid drug-drug interaction by clinical interventions. Acceptance rate of interventions was 77%. Clinical interventions are a useful tool in minimizing and preventing drug-drug interactions. The compliance of prescribers with their own prescribed medication regimens increased after clinical interventions. Conclusion. Prescribers, pharmacists and nurses have their respective roles in preventing drug-drug interactions and they must review the appropriateness of every medication order for clinical interventions.
Źródło:
European Journal of Clinical and Experimental Medicine; 2023, 1; 81-89
2544-2406
2544-1361
Pojawia się w:
European Journal of Clinical and Experimental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Structure and some magnetic properties of (BiFeO3)x-(BaTiO3)1-x solid solutions prepared by solid-state sintering
Autorzy:
Kowal, K.
Kowalczyk, M.
Czekaj, D.
Jartych, E.
Powiązania:
https://bibliotekanauki.pl/articles/146674.pdf
Data publikacji:
2015
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
hyperfine interactions
magnetization
Mössbauer spectroscopy
multiferroics
Opis:
This paper presents the results of the study on structure and magnetic properties of the perovskite-type (BiFeO3)x-(BaTiO3)1-x solid solutions. The samples differing in the chemical composition (x = 0.9, 0.8, and 0.7) were produced according to the conventional solid-state sintering method from the mixture of powders. Moreover, three different variants of the fabrication process differing in the temperatures and soaking time were applied. The results of X-ray diffraction (XRD), Mössbauer spectroscopy (MS), and vibrating sample magnetometry (VSM) were collected and compared for the set of the investigated materials. The structural transformation from rhombohedral to cubic symmetry was observed for the samples with x = 0.7. With increasing of BaTiO3 concentration Mössbauer spectra become broadened refl ecting various confi gurations of atoms around 57Fe probes. Moreover, gradual decreasing of the average hyperfi ne magnetic fi eld and macroscopic magnetization were observed with x decreasing.
Źródło:
Nukleonika; 2015, 60, 1; 81-85
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Compositional dependence of hyperfine interactions and magnetoelectric coupling in (BiFeO3)x-(BaTiO3)1–x solid solutions
Autorzy:
Kowal, K.
Guzdek, P.
Kowalczyk, M.
Jartych, E.
Powiązania:
https://bibliotekanauki.pl/articles/147971.pdf
Data publikacji:
2017
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
hyperfine interactions
magnetoelectric coupling
Mössbauer spectroscopy
Opis:
In this work the compositional dependence of hyperfine interactions and magnetoelectric coupling in (BiFeO3)x-(BaTiO3)1–x solid solutions where x = 0.5–0.9 fabricated from commercial BaTiO3 in terms of the solid-state sintering method at various temperatures and over different time periods is described. In general, as the content of BaTiO3 increases, a decrease in the hyperfine magnetic field (Bhf) at 57Fe nuclei was observed. However, for samples exhibiting lower homogeneity in which the ions of Bi3+ and Fe3+ are replaced by Ba2+ and Ti4+ with lower probability, higher values of Bhf are obtained. For the sample where x = 0.6 that exhibits the coexistence of rhombohedral, regular and tetragonal phases, the highest value of the αME coefficient (3.57 mV/A) was observed, which is more than three times higher when compared to the hitherto published results.
Źródło:
Nukleonika; 2017, 62, 2; 117-122
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mean hyperfine fields at 57Fe in dilute iron-based alloys studied by Mössbauer spectroscopy
Autorzy:
Idczak, R.
Konieczny, R.
Chojcan, J.
Powiązania:
https://bibliotekanauki.pl/articles/147537.pdf
Data publikacji:
2015
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
hyperfine interactions
iron alloys
Mössbauer spectroscopy
Opis:
The room temperature Mössbauer spectra of 57Fe were measured for numerous dilute iron-based alloys Fe1-xDx (D = Al, Co, Cr, Mn, Mo, Ni, Os, Pt, Re, Ru, Ta, Ti, V, W, Zn), annealed at 1270 K for 2 h before the measurements. The spectra were analyzed using the Hesse–Rübartsch method in order to determine the mean hyperfi ne magnetic fi eld at the 57Fe nuclei as a function of concentration x of the minority component of the alloy. As the binary alloys are one-faze solid solutions of an element D in iron, a linear relationship between and x is observed. The result supports the suggestion that Mössbauer spectroscopy is a useful tool for the study of dissolution of different elements in iron.
Źródło:
Nukleonika; 2015, 60, 1; 39-42
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mathematical model of a multi-link surgical manipulator joint with an antiseptic coating
Autorzy:
Leniowski, R.
Leniowska, L.
Powiązania:
https://bibliotekanauki.pl/articles/384786.pdf
Data publikacji:
2011
Wydawca:
Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Tematy:
surgical manipulators
mathematical modeling
coating interactions
Opis:
We present a synthesis of the mathematical model of a joint of a new generation multi-link surgical micromanipulator. A design of such a device involves finding solutions for several difficult problems which do not appear in classical 'large' robots.Aprototype in development has six links, and it is driven by brushless servomotors with planetary and worm gears, for which the total transmission ratio is above 10000:1. Most importantly, whole construction is covered by an antiseptic coating which substantially changes manipulator's dynamics. Because of the complicated form of the drive model with three-stage planetary gearings and coating interactions, control of such system is significantly different from control of a typical industrial robot. This paper presents a synthesis of the model of the joint, which can be used to design the control system. In this work the derived model is used to examine joint's properties and characteristics. Results are presented graphically and discussed.
Źródło:
Journal of Automation Mobile Robotics and Intelligent Systems; 2011, 5, 3; 21-26
1897-8649
2080-2145
Pojawia się w:
Journal of Automation Mobile Robotics and Intelligent Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wzmacnianie efektywnej konwersacji na linii uczeń – uczeń. Problemy – rozwiązania – modele
Improving effective Student-to-Student Conversation. Key Issues – Solutions – Scaffolding
Autorzy:
Cybulska-Wal, Alina
Powiązania:
https://bibliotekanauki.pl/articles/960052.pdf
Data publikacji:
2018
Wydawca:
Uniwersytet Rzeszowski. Wydawnictwo Uniwersytetu Rzeszowskiego
Tematy:
conversation
modeling
student-to-student interactions
Opis:
The overall purpose of this article is help teachers prepare students to have in-depth conversations about content area concepts and topics. Alina Cybulska-Wal claims that interaction is fundamental to learning and identity. In authentic interaction work, students use the facts, grammar, and vocabulary in connected sentences to clarify, fortify, and negotiate complex ideas. In this article author shares ways to model and scaffold classroom conversations. Furthermore, she shows how to manage the most frequent issues.
Źródło:
Dydaktyka Polonistyczna; 2018, 4 (13); 249-259
2451-0939
Pojawia się w:
Dydaktyka Polonistyczna
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Diversity of birds and their ecological interactions in the Mura Indigenous Territory, Brazilian Amazon Rainforest
Autorzy:
da Silva de Oliveira, Natalia Livramento
Dario, Fabio Rossano
Powiązania:
https://bibliotekanauki.pl/articles/1109530.pdf
Data publikacji:
2018
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Amazon Rainforest
birds
ecological interactions
indigenous
Opis:
The objective of this study was accomplishes a knowledge survey of the Mura indigenous on the birds of natural occurrence in their territory, who is located in the Amazonas State, Brazilian Amazon Rainforest. As method for collect the data were used open and semi-structured interviews. Twenty four indigenous were interviewed, with both genres and different ages. The interviewees mentioned 118 different species of birds, counting about 60% of the records, which in addition to the interviews was completed by surveying the bird by direct field observations with sighting and vocalization in different natural environments of the indigenous territory. The indigenous showed wide ecological knowledge regarding these birds. The oral transmission of knowledge occurs across generations.
Źródło:
World News of Natural Sciences; 2018, 20; 85-102
2543-5426
Pojawia się w:
World News of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Interakcje wybranych leków z alkoholem a poziom wiedzy studentów pielęgniarstwa
Interactions of selected medicines with alcohol and the level of knowledge of nursing students
Autorzy:
Nazar, Elżbieta
Chojnacka-Kowalewska, Grażyna
Powiązania:
https://bibliotekanauki.pl/articles/1179205.pdf
Data publikacji:
2019-03-25
Wydawca:
Państwowa Uczelnia Zawodowa we Włocławku
Tematy:
alkohol
leki
interakcje
alcohol
medicines
interactions
Opis:
Wstęp. Jednoczesne spożywanie leków i alkoholu może prowadzić do wielu interakcji, niekiedy niebezpiecznych dla zdrowia i życia. Dotyczą także one leków dostępnych w aptece bez recepty, takich jak leki przeciwbólowe i przeciwzapalne, antyalergiczne, antybiotyki czy leki na niestrawność i zgagę. W Polsce 89% Polaków przyjmuje leki dostępne bez recepty. Z kolei 72% dorosłych osób w Polsce pije napoje alkoholowe. Cel. Celem badań była analiza wiedzy studentów kierunku pielęgniarstwo na temat możliwych reakcji wybranych leków z alkoholem. Materiał i metody. Badania przeprowadzono w 2019 roku wśród 66 studentów kierunku pielęgniarstwo. Wykorzystano metodę sondażu diagnostycznego, technikę ankietowania oraz autorski kwestionariusz ankiety. Wyniki. Zdecydowana większość studentów pielęgniarstwa nie dysponuje pełną wiedzą na temat możliwych interakcji popularnych leków z alkoholem. Wnioski. Studenci kierunku pielęgniarstwa powinni pogłębiać swoją wiedzę na temat interakcji, które mogą wystąpić w przypadku spożywania alkoholu i leków. Pozwoli to na ich profesjonalny udział w farmakoterapii pacjentów i prowadzenie wobec nich działań z zakresu edukacji zdrowotnej.
Introduction. Mixed consumption of medicines and alkohol can lead to many interactions, sometimes dangerous to health and life. This also refers to over-the-counter medicines , such as painkillers and anti-inflammatory medicines , anti-allergic medicines , antibiotics Or medicines for indigestion and heartburn. In Poland, 89% of Polestake over-the-countermedicines . In turn, 72% of adults in Poland drink alcoholic beverages. Aim. The aim of the research was to analyse the knowledge of nursing students on possibile reactions of selected medicines with alcohol. Material and methods. The research was carried out in 2019 among 66 students of nursing. The method of diagnosticsurvey, questionnaire technique and author's questionnaire was used. Results. The vast majority of nursingstudents do not have full knowledge about the possibile interactions of popular medicines with alcohol. Conclusions. Students in the field of nursings hould deepen their knowledge about the interactions chich May occurunder the mixed consumption of alcohol and medicines . This will All owprofessional nature of Pharmacio therapy and health education of the addicted.
Źródło:
Innowacje w Pielęgniarstwie i Naukach o Zdrowiu; 2019, 4, 1; 68-84
2451-1846
Pojawia się w:
Innowacje w Pielęgniarstwie i Naukach o Zdrowiu
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Trust in Educational Interactions in Higher Education Institutions: Examination as an Experience of Trust
Autorzy:
Czerepaniak-Walczak, Maria
Perzycka, Elżbieta
Powiązania:
https://bibliotekanauki.pl/articles/2031660.pdf
Data publikacji:
2014-06-30
Wydawca:
Wydawnictwo Adam Marszałek
Tematy:
educational interactions
academic life
higher education
Opis:
The article presents the results of the research on one of the manifestations of trust in higher education institutions, namely the attitude of students to examination and test supervision executed by objective observers. The research was conducted in June 2013 and the specific question applied in the research tool was a real example from the academic life, which was discussed in the media. The context of the analysis is mass nature of higher education. The text presents statistics showing the scale and growth of academic enrolment rate in Poland in the last quarter-century. The analysis focuses on the consequences of the mass nature of higher education for the experience of trust in educational interactions, and precisely on the experience of trust during examinations. In this paper we present a small part of our research on culture of trust in educational interactions assisted by ICT.
Źródło:
The New Educational Review; 2014, 36; 182-193
1732-6729
Pojawia się w:
The New Educational Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Drug-induced diseases in otolaryngology – causes, clinical signs, treatment
Autorzy:
Woroń, Jarosław
Jurkiewicz, Dariusz
Rapiejko, Piotr
Lorkowska- Zawicka, Barbara
Tymiński, Radosław
Wordliczek, Jerzy
Powiązania:
https://bibliotekanauki.pl/articles/23203210.pdf
Data publikacji:
2021-02-16
Wydawca:
Index Copernicus International
Tematy:
drug interactions
otolaryngology
pharmacotherapy
side effects
Opis:
Introduction: In the daily practice of an otolaryngologist, we encounter cases where the symptoms are not the result of disease but result from pharmacotherapy. In the case of symptoms such as hearing loss, tinnitus, or dizziness, polytherapy may be used as the basis for their occurrence, which, due to the lack of rationality in combining drugs, leads to symptoms that the patient and the doctor very often interpret as a new disease syndrome. Aim: The aim of the study is to show and to raise awareness of the fact that the symptoms of hearing organ impairment are frequently drug-related and only a modification of the currently used pharmacotherapy is a rational procedure in such cases. Material: This paper describes 30 cases who developed side effects of polypharmacy in the form of hearing disorders, dizziness, and tinnitus. The causes of drug-related complications were discussed, as well as effective methods of their prevention.
Źródło:
Polish Journal of Otolaryngology; 2021, 75, 5; 9-15
0030-6657
2300-8423
Pojawia się w:
Polish Journal of Otolaryngology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Investigation of signals of the range 10-3 - 10-4 Hz registered by water-tube tiltmeters in the underground geodynamic laboratory in Książ (SW Poland)
Autorzy:
Kaczorowski, Marek
Kasza, Damian
Zdunek, Ryszard
Wronowski, Roman
Powiązania:
https://bibliotekanauki.pl/articles/2174941.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Centrum Badań Kosmicznych PAN
Tematy:
interferometry
time series analysis
tides
planetary waves
acoustic gravity waves
surface waves
free oscillations
ionosphere interactions
atmosphere interactions
Opis:
The Geodynamic Laboratory in Książ includes investigations of various kinds of geodynamic signals. Among others, we registered harmonic signals of the range 10-3 - 10-4 Hz. These signals had been found in the measurement series of the long water-tube (WT) tiltmeters. The discovered signals consist of two classes of harmonics associated with various kinds of phenomena. The first class of these signals belongs to viscoelastic vibrations of the Earth’s solid body, while the second class is produced possibly by the extremely long atmospheric infrasound waves. The signals of the vibrations of the Earth had been well recognized by the characteristic frequencies of the Earth’s free vibrations’ resonance, which occur mainly after strong earthquakes. The atmospheric pressure microvibrations affected the water level in the hydrodynamic systems of the WTs as a result of an inverse barometric effect. We observed that signals from both classes blend in the harmonics of similar frequencies and jointly affect the hydrodynamic systems of the WTs. We found that the amplitude of the secondclass signals strongly depends on the location of water-tube gauges inside the underground, while the amplitudes of the first-class signals are similar for all the gauges. These observations clearly indicate the atmospheric origin of the second class of registered signals.
Źródło:
Artificial Satellites. Journal of Planetary Geodesy; 2022, 57, 4; 210--236
2083-6104
Pojawia się w:
Artificial Satellites. Journal of Planetary Geodesy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Socjopsychologiczne mechanizmy kształtowania rzeczywistości organizacyjnej
Autorzy:
Haromszeki, Łukasz
Jarco, Piotr
Powiązania:
https://bibliotekanauki.pl/articles/422598.pdf
Data publikacji:
2013
Wydawca:
Wydawnictwo Uniwersytetu Ekonomicznego we Wrocławiu
Tematy:
human cognition
socio-psychological mechanisms
interactions
organizational reality
Opis:
Human cognition is conditioned not only by social existence but also by the whole culture which is understood as a set of all forms of social awareness. Learning, popular knowledge and different cognitive patterns determine and select consciousness content. People, being subject to specific psychological mechanisms, determine quality and complexity of social relations and every day create from the beginning social reality. Knowledge about the ways people call the world and give new meaning to it as well as how they define the sense of their own activity are important and let better understand the phenomenon of organizational life and a special role of human as a creator of organizational culture.
Źródło:
Nauki Społeczne; 2013, 1(7); 28-39
2080-6019
Pojawia się w:
Nauki Społeczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ammonium nitrate phase state stabilization with small amounts of some organic compounds
Autorzy:
Golovina, N.
Nechiporenko, G.
Nemtsev, G.
Zyuzin, I.
Manelis, G. B.
Lempert, D.
Powiązania:
https://bibliotekanauki.pl/articles/358906.pdf
Data publikacji:
2009
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
Tematy:
ammonium nitrate
phase transitions
phase stabilization
intermolecular interactions
Opis:
The investigation considers phase stabilization of ammonium nitrate for considerable extension of its application area including new generation of gas-generating compositions for airbag inflators. It was shown that alloys of ammonium nitrate with small amounts (2-10%) of some organic compounds can have no phase transitions or at least have only one instead of three ones in initial ammonium nitrate. The mostly effective as stabilizers are the compounds that have rather close crystallographic parameters. A strong donor-acceptor interaction between nitrate-anion and organic molecules are found. Using quantum-chemical calculations, X-ray analysis, X-ray phase analysis, UV- and IR-spectroscopy it was found a new ammonium nitrate phase state in its alloy with some organic additives. This state is stable in temperature range between -50 and +100 C.
Źródło:
Central European Journal of Energetic Materials; 2009, 6, 1; 45-56
1733-7178
Pojawia się w:
Central European Journal of Energetic Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Magnetic interactions in frozen solutions of ironporphyrins
Autorzy:
Dziedzic-Kocurek, K.
Okła, D.
Stanek, J.
Powiązania:
https://bibliotekanauki.pl/articles/147882.pdf
Data publikacji:
2013
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
Fe-porphyrins
intermolecular interactions
magnetic relaxation
Mössbauer spectroscopy
Opis:
The powder samples of meso-tetraphenyloporphyrin iron(III) chloride and ferriprotoporphyrin IX chloride and their frozen in solutions N,N-dimethylformamide were studied by Mössbauer spectroscopy. The variation of the outer ligands of the porphyrin rings modifies their magnetic properties but the major influence on the magnetic relaxation process exerts the intermolecular magnetic interactions, which are eliminated in dilute solutions.
Źródło:
Nukleonika; 2013, 58, 1; 83-86
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Local atomic configuration in mechanically synthesized Co-Fe-Ni alloys
Autorzy:
Pikula, T.
Oleszak, D.
Żurawicz, J.
Jartych, E.
Powiązania:
https://bibliotekanauki.pl/articles/148207.pdf
Data publikacji:
2007
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
nanocrystalline alloys
mechanical alloying
hyperfine interactions
Mössbauer spectroscopy
Opis:
Ternary Co-Fe-Ni alloys were prepared from the elemental powders by the mechanical alloying method. Structural properties and hyperfine interactions parameters were determined using X-ray diffraction and Mössbauer spectroscopy. X-ray diffraction proved that during milling Co-Fe-based solid solutions with b.c.c. lattice were formed in the case of Co40Fe40Ni20 and Co50Fe40Ni10 alloys, while for Co52Fe26Ni22 and Co65Fe23Ni12 compositions Co-Ni-based solid solutions with f.c.c. lattice were obtained. Mössbauer spectroscopy revealed similar values of the average hyperfine magnetic fields for all the alloys. These values corresponded to the different surroundings of 57Fe isotopes by Co, Fe and Ni atoms, depending on the chemical composition of the alloy. The possible atomic configurations around 57Fe isotopes were discussed on the basis of the local environment model under the assumption that only the first nearest neighbours contribute to the hyperfine magnetic field at 57Fe site.
Źródło:
Nukleonika; 2007, 52, supl. 1; 47-50
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Framework of machine criticality assessment with criteria interactions
Autorzy:
Jasiulewicz–Kaczmarek, Małgorzata
Antosz, Katarzyna
Żywica, Patryk
Mazurkiewicz, Dariusz
Sun, Bo
Ren, Yi
Powiązania:
https://bibliotekanauki.pl/articles/1841665.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN
Tematy:
machine criticality assessment
assessment criteria
assessment methods
interactions
Opis:
Criticality is considered as a fundamental category of production planning, maintenance process planning and management. The criticality assessment of machines and devices can be a structured set of activities allowing to identify failures which have the greatest potential impact on the company’s business goals. It can be also used to define maintenance strategies, investment strategies and development plans, assisting the company in prioritizing their allocations of financial resources to those machines and devices that are critical in accordance with the predefined business criteria. In a criticality assessment process many different and interacting criteria have to be taken into consideration, despite the fact that there is a high level of uncertainty related to various parameters. In addition, not all assessment criteria are equally important. Therefore, it is necessary to determine the weight of each criterion taking into account different requirements of machine criticality process stakeholders. That is why a novel model of a machine criticality assessment is proposed in this paper. The model extends the existing methods of assessing machines criticality, taking into account not only the importance of machine criticality assessment criteria, but also possible interactions between them.
Źródło:
Eksploatacja i Niezawodność; 2021, 23, 2; 207-220
1507-2711
Pojawia się w:
Eksploatacja i Niezawodność
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analiza możliwości pomiaru oddziaływań torsyjnych w zderzeniach płaskich z obrotem
Analysis of capabilities to measure torsional interactions in flat collisions with rotation
Autorzy:
Szelmanowski, A.
Miłoch, P.
Powiązania:
https://bibliotekanauki.pl/articles/155375.pdf
Data publikacji:
2007
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
oddziaływania torsyjne
metody badań
torsional interactions
testing methods
Opis:
W referacie przedstawiono nową formułę matematyczną (podaną przez rosyjskiego fizyka prof. Szypowa) dla opisu zjawiska zderzeń płaskich z obrotem w postaci równań pędu i momentu pędu w ruchomym układzie odniesienia. Omówiono opracowany w ITWL model matematyczny dla zderzeń ciał wirujących oraz przedstawiono wyniki jego badań symulacyjnych wykonanych w pakiecie Matlab-Simulink. Określono wartości parametrów układu dla ruchu postępowego i obrotowego zderzających się ciał, umożliwiających wystąpienie tzw. oddziaływań torsyjnych. Zaproponowano układ pomiarowy do określenia tego zjawiska na bazie przyspieszeniomierzy i giroskopów prędkościowych.
The paper has been intended to present a new mathematical formula (given by Russian physicist Prof. Szypow) to describe flat collisions with rotation in the form of equations of momentum and moment of momentum within a dynamic reference frame. What has been discussed is a mathematical model generated at ITWL to describe collisions of rotating bodies. Simulation-effected results gained with the Matlab-Simulink are presented. Evaluated are parameters of the reference frame for both translatory and rotary motion of colliding bodies, which enable the so-called torsional interactions. Proposed is a measuring system to define this phenomenon using accelerometers and rate giroscopes.
Źródło:
Pomiary Automatyka Kontrola; 2007, R. 53, nr 9 bis, 9 bis; 568-571
0032-4140
Pojawia się w:
Pomiary Automatyka Kontrola
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Collaboration in Healthcare Through Boundary Work and Boundary Objects
Autorzy:
Meier, Ninna
Powiązania:
https://bibliotekanauki.pl/articles/2118985.pdf
Data publikacji:
2015-07-31
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
Boundary Work
Boundary Objects
Micro-Interactions
Relationships
Healthcare
Opis:
This article contributes to our understanding of how boundary work is practiced in healthcare settings. Previous studies have shown how boundaries are constantly changing, multiple, and co-existing, and can also be relatively stable cognitive and social distinctions between individuals and groups. In highly specialized, knowledge-intensive organizations such as healthcare organizations, organizational, professional, and disciplinary boundaries mark the formal structure and division of work. Collaboration and coordination across these boundaries are essential to minimizing gaps in patient care, but also may be challenging to achieve in practice. By drawing on data from an ethnographic study of two hospital wards, this article investigates practices of cross-disciplinary and professional collaboration and adds to our knowledge of how this kind of boundary work is produced in context. Moreover, it adds to existing boundary literature by exploring the fast-paced, situational, micro-interactions in which boundaries are drawn, maintained, and dissolved. These mundane, brief exchanges are essential to the practice of collaboration through boundary work. I consider the implications of these findings for boundary theory and boundaries in healthcare and other related settings.
Źródło:
Qualitative Sociology Review; 2015, 11, 3; 60-82
1733-8077
Pojawia się w:
Qualitative Sociology Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A comparative study on interactions of ionic collectors with orthoclase
Autorzy:
Ozun, S.
Atalay, M. U.
Powiązania:
https://bibliotekanauki.pl/articles/110609.pdf
Data publikacji:
2016
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
collector interactions
zeta potential
microflotation
FTIR
AFM
orthoclase
Opis:
Flotation and adsorption characteristics of the most commonly used cationic and anionic collectors with high grade orthoclase were investigated through the electrokinetic potential measurement, microflotation, Fourier transform infrared spectroscopy (FTIR) and atomic force microscopy (AFM) studies. According to the obtained results, orthoclase had high flotation recovery with amine and oleic acid based (OAB) collector at certain pH ranges no flotation response was observed with petroleum sulfonate at different pHs. In contrast to the flotation recovery differences, the electrokinetic potential measurements, FTIR and AFM analyses presented similar adsorption characteristics for all collectors. The results of electrokinetic potential tests showed that amine had a strong influence on the zeta potential of orthoclase. While amine turned the zeta potentials of orthoclase from negative to positive, sulfonate and OAB collector provided slightly more negative zeta potentials at certain pHs. In the case of FTIR and AFM analyses, each collector-treated orthoclase (CTO) sample displayed similar characteristic FTIR bands of CH2 group and micro topographical collector coated patches with different intensities. However, the interactions of each collector with orthoclase surfaces were altered by rinsing with acetone indicating that the interactions were mostly through the electrostatic forces and/or hydrogen bonding.
Źródło:
Physicochemical Problems of Mineral Processing; 2016, 52, 2; 955-972
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Optimization of flotation assay conditions for syndapin binding to phosphatidic acid containing liposomes
Autorzy:
Piaścik, Magda
Zegarlińska, Jolanta
Sikorski, Aleksander F.
Czogalla, Aleksander
Powiązania:
https://bibliotekanauki.pl/articles/764838.pdf
Data publikacji:
2017
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
protein-lipid interactions
LUVs
density gradient
ultracentrifugation
Opis:
Flotacja jest jedną z najefektywniejszych metod wstępnej identyfikacji oddziaływań białko-błony lipidowe. W większości przypadków wykorzystuje się w niej małe jednowarstwowe pęcherzyki lipidowe, które służą jako modele błonowe i nie wymagają dodatkowych nośników, takich jak membrany czy nanocząstki polimerowe, które są często używane w innych metodach mających na celu identyfikację oddziaływań białkolipid. W poniższej pracy prezentujemy wyniki uzyskane podczas badań oddziaływań kwasu fosfatydowego i syndapiny. Omawiamy także niektóre techniczne aspekty metody, kładąc nacisk na to jak małe zmiany w warunkach metody mogą wpłynąć na otrzymywane wyniki.
Flotation is one of the best method for preliminary identification of protein-lipid interactions. In most widely used approach it utilizes large unilamellar vesicles, that are excellent models of freestanding membranes and do not require any additional components, like solid supports or beads that are needed in other methods commonly used for protein-lipid binding studies. Here we present results obtained during our studies on phosphatidic acid - syndapin interactions and discuss some technical aspects of this method underlying how relatively small changes in the conditions can influence the results.
Źródło:
Acta Universitatis Lodziensis. Folia Biologica et Oecologica; 2017, 13; 9-17
1730-2366
2083-8484
Pojawia się w:
Acta Universitatis Lodziensis. Folia Biologica et Oecologica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
X-ray diffraction, Mössbauer spectroscopy, and magnetoelectric effect studies of (BiFeO3)x-(BaTiO3)1-x solid solutions
Autorzy:
Kowal, K.
Jartych, E.
Guzdek, P.
Stoch, P.
Wodecka-Duś, B.
Lisińska-Czekaj, A.
Czekaj, D.
Powiązania:
https://bibliotekanauki.pl/articles/147352.pdf
Data publikacji:
2013
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
multiferroics
hyperfine interactions
Mössbauer spectroscopy
magnetoelectric effect
Opis:
In this work the hyperfine interactions in (BiFeO3)x-(BaTiO3)1-x solid solutions with relation to their structural properties have been investigated. X-ray diffraction, Mössbauer spectroscopy and magnetoelectric effect measurements have been used for studies of sintered (BiFeO3)x-(BaTiO3)1-x solid solutions with x = 0.9, 0.8 and 0.7. With increasing contents of BaTiO3, the structural transformation from rhombohedral to cubic was observed. The weakening of the hyperfine magnetic fields accompanied by this transformation. On the other hand, the increasing amount of BaTiO3 caused an increase of the magnetoelectric effect.
Źródło:
Nukleonika; 2013, 58, 1; 57-61
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Free electrons: fundamental interactions, applications and data needs
Autorzy:
Christophorou, L.
Powiązania:
https://bibliotekanauki.pl/articles/148509.pdf
Data publikacji:
2003
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
applications
data
interactions
low-energy electrons
molecules
Opis:
In spite of the important recent advances in the field of low-energy electron interactions with atoms and molecules, there still exist fundamental needs and challenges, some of which are generic in their basic and applied significance. These include measurements of cross sections for a number of fundamental low-energy electron–ground-state molecule interaction processes such as vibrational excitation (direct and indirect) and dissociation into neutral fragments, studies of low-energy electron–excited molecule interactions, investigations of low-energy electron interactions with radicals and transient species, and measurements of electron energy losses in electron–molecule collision processes. They also include studies for linking of knowledge on isolated electron–molecule interactions to that in the condensed phases of matter, and the systematic and quantitative exploration of the interactions of low-energy electrons with molecular and macromolecular biological structures.
Źródło:
Nukleonika; 2003, 48, 2; 67-74
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Non-identical strange particle correlations in Au+Au collisions at square root sNN = 200 GeV from the STAR experiment
Autorzy:
Renault, G.
Powiązania:
https://bibliotekanauki.pl/articles/147463.pdf
Data publikacji:
2004
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
interferometry
non-identical particles
final state interactions
Opis:
Abstract Information about the space-time evolution of colliding nuclei can be extracted correlating particles emitted from nuclear collisions. The high density of particles produced in the STAR experiment allows the measurement of non-identical strange particle correlations. Due to the absence of Coulomb interaction, p-Lambda and p Lambda- systems are more sensitive to the source size than p-p pairs. Strong interaction potential has been studied using p-Lambda, and for the first time, p Lambda pairs. The experimental correlation functions have been described in the frame of a model based on the p-n interaction. The first preliminary measurement of pi-Teta correlations has been performed, allowing to extract information about the freeze-out time and the space-time asymmetries in particle emission closely related to the transverse radial expansion and decay of resonances.
Źródło:
Nukleonika; 2004, 49,suppl.2; 57-60
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Molecular Interactions in Binary Organic Liquid Mixtures Containing Ethyl Oleate and Ethanol at 2MHz Frequency
Autorzy:
Manukonda, S.
Kumar, G. P.
Babu, C. P.
Powiązania:
https://bibliotekanauki.pl/articles/412193.pdf
Data publikacji:
2015
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Ethyl Oleate
Ethanol
molecular interactions
adiabatic compressibility
Opis:
Molecular interactions of binary mixtures of Ethanol with a new organic compound Ethyl Oleate are investigated at a constant ultrasonic frequency of 2MHz under the temperature range of 303.15K-318.15K. The effect of mole fraction of Ethyl Oleate on velocity of sound wave and the density and viscosity of binary mixtures at various temperatures were studied. The effects on density (ρ), viscosity (η), adiabatic compressibility (βad), inter molecular free length (Lf) and internal pressure (Пi) also was studied.
Źródło:
International Letters of Chemistry, Physics and Astronomy; 2015, 40; 17-23
2299-3843
Pojawia się w:
International Letters of Chemistry, Physics and Astronomy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
TEACHING EXPERIENCE AND ITS ROLE IN FOREIGN LANGUAGE TEACHERS’ ANXIETY
Autorzy:
Jedynak, Małgorzata
Powiązania:
https://bibliotekanauki.pl/articles/444705.pdf
Data publikacji:
2011-12-01
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie
Tematy:
teacher anxiety,
teaching experience,
autonomy,
classroom interactions
Opis:
Twelve teachers of English representing three groups of different seniority: pre-service, freshmen and senior responded to the anxiety questionnaire to establish the relationship between the anxiety level and their teaching experience. The senior group is reported to have experienced less anxiety than other teachers. Some influential factors which determine a level of this specific anxiety were identified, for example expectations towards their work, autonomy in taking deci- sions, interactions with authorities, superiors and students. Finally, the article discusses practical ways of coping with teacher anxiety in a classroom.
Źródło:
Acta Neophilologica; 2011, XIII; 59-72
1509-1619
Pojawia się w:
Acta Neophilologica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Student perceptions of required student-to-student interactions in online courses
Autorzy:
Lesht, Faye L.
Schejbal, David
Powiązania:
https://bibliotekanauki.pl/articles/425950.pdf
Data publikacji:
2020
Wydawca:
Szkoła Główna Handlowa w Warszawie
Tematy:
online learning
student interactions
authenticity
online programs
Opis:
This multi-institutional study of undergraduate and graduate students enrolled in online degree programs explored student perceptions of required student-to-student interactions. Using a semi-structured interview methodology, thirty-three students participated in the study. While all of the students had experience with the required discussion board interactions of posting and responding, a majority of the students reported experience with other types of required student-to-student interactions including group projects, group presentations, peer reviews, and, for a few, discussions within the required synchronous sessions. The findings indicate that while most value the concept of peer-to-peer interaction in online courses, many found the required assignments lacking in authenticity and not a good use of their time. Some students reported satisfaction with one or more of the requirements such as small group assignments when time was allowed for coordination, small group discussions, and selected discussion board posts. The students valued the interactions most when those interactions were relevant to their careers. These findings encourage taking the demographic realities of students studying online into consideration when incorporating student-to-student interactions into courses. Many have family and other obligations, so they are particularly sensitive to work that appears to be trivial or unnecessary. Hence, learning elements such as peer-to-peer interactions should be incorporated into courses intentionally and with purpose so that the interactions do not appear to be busy-work or checking an interaction box.
Źródło:
e-mentor. Czasopismo naukowe Szkoły Głównej Handlowej w Warszawie; 2020, 84, 2; 4-12
1731-6758
1731-7428
Pojawia się w:
e-mentor. Czasopismo naukowe Szkoły Głównej Handlowej w Warszawie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Safety of oral nifuroxazide – analysis of data from a spontaneous reporting system
Autorzy:
Karlowicz-Bodalska, Katarzyna
Głowacka, Krystyna
Boszkiewicz, Kamila
Han, Stanisław
Wiela-Hojeńska, Anna
Powiązania:
https://bibliotekanauki.pl/articles/895655.pdf
Data publikacji:
2019-08-30
Wydawca:
Polskie Towarzystwo Farmaceutyczne
Tematy:
diarrhea
gastrointestinal tract
pharmacovigilance
drug interactions
nifuroxazide
Opis:
Nifuroxazide is a popular chemotherapeutic agent, that is widely used in Poland in acute and chronic bacterial diarrhea treatment. It is available in pharmacies as over-the-counter tablets for adults and a suspension on prescription for children. The aim of the study was to assess the safety of nifuroxazide therapy. Adverse reaction reports from the Regional Pharmacovigilance Center in Wroclaw, the pharmaceutical company PPF Hasco-Lek, and VigiAccess and EudraVigilance databases were analyzed. Based on the analysis of the data collected from the above sources, nifuroxazide have shown a high therapeutic value in the gastrointestinal tract infections, maintaining high safety of usage at the same time. The number of drug application adverse reactions in Poland is not so high primarily due to high safety profile and low patient awareness of the possibility of reporting drug side effects.
Źródło:
Acta Poloniae Pharmaceutica - Drug Research; 2019, 76, 4; 745-751
0001-6837
2353-5288
Pojawia się w:
Acta Poloniae Pharmaceutica - Drug Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Herbert Blumer on the Interactional Order of the Democratic Society
Autorzy:
Hałas, Elżbieta
Powiązania:
https://bibliotekanauki.pl/articles/1929938.pdf
Data publikacji:
2012-03-30
Wydawca:
Polskie Towarzystwo Socjologiczne
Tematy:
Herbert Blumer
democracy
symbolic interactions
negotiated order
Opis:
The article draws attention to the potential significance of Herbert Blumer’s heritage in the sociological analysis of the issues with which modern democracy has to deal. It aims to strengthen that current of interpretation pertaining to symbolic interactionism which opposes the widespread tendency to consider it as amicrosociological orientation. The article emphasizesmedium-range phenomena-in other words, mesosociological problems of organizations, interest groups and social movements. Blumer helped George H. Mead’s ideas, including the basic concept of the self, find a fuller application in sociology. To properly evaluate Blumer’s achievements, one should consider him as a researcher of the changes occurring in modern societies in general. He emphasized the existence of a constant process of defining and redefining social institutions, and thus, the role of civic agency-in other words, ultimately, of the reflexive self. In Blumer’s conceptions of symbolic interaction, joint action and negotiated order one may see an elaboration of the interactional order of the democratic society.
Źródło:
Polish Sociological Review; 2012, 177, 1; 3-18
1231-1413
2657-4276
Pojawia się w:
Polish Sociological Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Numerical analysis of the thermal damage process of the tissue-blood vessel system and distribution of oxygen in the tissue
Autorzy:
Jasiński, Marek
Powiązania:
https://bibliotekanauki.pl/articles/2086966.pdf
Data publikacji:
2022
Wydawca:
Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:
bioheat transfer
oxygen transport
Arrhenius integral
laser-tissue interactions
Opis:
The paper presents a numerical analysis of the thermal damage process taking place in biological tissue containing a blood vessel during laser irradiation. The internal heat source resulting from laser irradiation based on the solution of the optical diffusion equation is taken into account. The investigation was concerned with the influence of tissue denaturation and oxygen content in blood on temperature distribution. The analysis of oxygen transport to the tissue is treated as a part of the analysis of thermal damage processes. At the stage of numerical computations, the boundary element method and the finite difference method were used.
Źródło:
Journal of Theoretical and Applied Mechanics; 2022, 60, 2; 199--212
1429-2955
Pojawia się w:
Journal of Theoretical and Applied Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The effect of soil risk element contamination level on the element contents in Ocimum basilicum L.
Autorzy:
Růžičková, P.
Száková, J.
Havlík, J.
Tlustoš, P.
Powiązania:
https://bibliotekanauki.pl/articles/205287.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
basil
Ocimum basilicum L.
soil
risk elements
anthocyanins
interactions
Opis:
Red basil (Ocimum basilicum L.) cv. Red Rubin was cultivated in model pot experiment in the soil amended by arsenic, cadmium and lead solutions in stepwise concentrations representing the soil concentration levels of former mining area in the vicinity of Příbram, Czech Republic. The element levels added to the soil reached up to 40 mg Cd, 100 mg As, and 2000 mg Pb per kg of soil. Moreover, essential macro-and microelements as well as cyanidine contents were investigated to assess their potential interactions with the risk elements. The extractable element portions in soils determined at the end of vegetation period differed according to the individual elements. Whereas the plant-available (extractable with 0.11M CH3COOH) content of Cd represented 70-100% of the added Cd, the mobile portion of Pb did not exceed 1%. The risk element content in plants reflected the increasing element contents in soil. The dominant element portions remained in plant roots indicating the limited translocation ability of risk elements to the aboveground biomass of this plant species. Although the risk element contents in amended plants significantly increased, no visible symptoms of phytotoxicity occurred. However, the effect of enhanced risk element contents on the essential element uptake was assessed. Considering inter-element relationships, elevated sulphur levels were seen in amended plants, indicating its possible role of phytochelatin synthesis in the plants. Moreover, the molybdenum contents in plant biomass dropped down with increasing risk element uptake by plants confirming As-Mo and Cd-Mo antagonism. The increasing content of cyanidine in the plant biomass confirmed possible role of anthocyanins in detoxification mechanism of risk element contaminated plants and suggested the importance of anthocyanin pigments for risk element tolerance of plants growing in contaminated areas.
Źródło:
Archives of Environmental Protection; 2015, 41, 2; 47-53
2083-4772
2083-4810
Pojawia się w:
Archives of Environmental Protection
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mosses and liverworts in the glacier forelands and mature tundra of Svalbard (High Arctic): diversity, ecology, and community composition
Autorzy:
Wietrzyk-Pełka, Paulina
Cykowska-Marzencka, Beata
Maruo, Fumino
Szymański, Wojciech
Węgrzyn, Michał Hubert
Powiązania:
https://bibliotekanauki.pl/articles/2041805.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Arctic
Spitsbergen
bryophytes
cryptogams
plant-soil interactions
species diversity
Źródło:
Polish Polar Research; 2020, 41, 2; 151-175
0138-0338
2081-8262
Pojawia się w:
Polish Polar Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Computational aspects of saturated porous media undergoing large deformations
Obliczeniowe aspekty nasyconych ośrodków porowatych przy dużych deformacjach
Autorzy:
Szefer, G.
Powiązania:
https://bibliotekanauki.pl/articles/281342.pdf
Data publikacji:
1998
Wydawca:
Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:
large deformations
porous media
phase interactions
partical stresses
interface
Opis:
Large displacements and finite strains of saturated porous media will be considered. A consistent lagrangian description for both solid and fluid phases is presented. The problem of interaction between phases, crucial for computation, is discussed in detail. Variational formulations for the initial boundary value problem and iterative procedures allowing for overcoming nonlinearities are given. These enables one to solve a complex problem of deformation of two-component bodies with deformationdependent porosity, permeability and separation of particles.
W pracy rozważono duże przemieszczenia i skończone odkształcenia nasyconych ośrodków porowatych. Przedstawiono konsekwentny opis Lagrange'a dla obu faz: ciekłej i stałej. Szczegółowo omówiono zasadniczy dla obliczeń problem interakcji faz. Podano wariacyjne sformułowanie problemu początkowo-brzegowego oraz iteracyjne procedury dla pokonania nieliniowości. To pozwala rozwiązywać złożone problemy deformacji ośrodków dwu-składnikowych ze zmienną, zależną od deformacji porowatością, przepuszczalnością i separacją cząstek.
Źródło:
Journal of Theoretical and Applied Mechanics; 1998, 3; 745-757
1429-2955
Pojawia się w:
Journal of Theoretical and Applied Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Polymer Reinforced DNAN/RDX Energetic Composites: Interfacial Interactions and Mechanical Properties
Autorzy:
Qian, W.
Chen, X.
Luo, G.
Powiązania:
https://bibliotekanauki.pl/articles/358170.pdf
Data publikacji:
2017
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
Tematy:
energetic composites
dinitroanisole
molecular dynamics
interfacial interactions
mechanical properties
Opis:
2,4-Dinitroanisole (DNAN) has excellent properties as a replacement for 1,3,5-trinitrotoluene (TNT) in melt-cast explosives, and the polymeric modifier used is critical to the mechanical modification of the DNAN/RDX energetic composite. In our research, the typical polymeric modifier acrolein-pentaerythritol resin (APER) was successfully added experimentally to the DNAN/RDX system, and the effects of interfacial interactions on the mechanical properties of these polymers in reinforcing the DNAN/RDX energetic composites were investigated by molecular dynamics simulations, scanning electron microscopy (SEM) and mechanical testing. The results showed that strong attractive interactions exist between the polymer and the explosives, wherein van der Waals forces were found to play the main role. The morphological micro-images also showed tight binding between the polymer/explosive interfaces, which supported the calculated strong interfacial interactions. The mechanical tests confirmed that adding the polymers can obviously reinforce the mechanical strength and toughness of DNAN/RDX systems. The above observations revealed that the cooperative effects of the APER polymer can help to reinforce the interfacial interactions and mechanical properties of DNAN/RDX composites, which is of importance in the formulation and mechanical evaluation of advanced energetic composites.
Źródło:
Central European Journal of Energetic Materials; 2017, 14, 3; 726-741
1733-7178
Pojawia się w:
Central European Journal of Energetic Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Synthesis and characterization of AgFeO2 delafossite with non-stoichiometric silver concentration
Autorzy:
Siedliska, K.
Pikula, T.
Chocyk, D.
Jartych, E.
Powiązania:
https://bibliotekanauki.pl/articles/148622.pdf
Data publikacji:
2017
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
delafossite
silver ferrite
co-precipitation
hyperfine interactions
Mössbauer spectroscopy
Opis:
The simple co-precipitation method was used to prepare AgxFeO2 delafossite with non-stoichiometric silver concentration in the range of x = 0.05–1. The obtained material was investigated using X-ray powder diffraction and 57Fe Mössbauer spectroscopy at room temperature. The structural and hyperfine interaction parameters were recognized in relation with decreasing silver concentration. The study revealed that the delafossite structure of AgxFeO2 was maintained up to x = 0.9; as the range of silver concentration was decreased to 0.05 ≤ x ≤ 0.8, a mixture of AgFeO2, Fe2O3 or/and FeOOH was formed.
Źródło:
Nukleonika; 2017, 62, 2; 165-170
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Coupling of hydrodynamical, biological, and geochemical processes in streambeds
Autorzy:
Packman, A. I.
Battin, T. J.
Newbold, J. D.
Powiązania:
https://bibliotekanauki.pl/articles/241502.pdf
Data publikacji:
2003
Wydawca:
Polska Akademia Nauk. Instytut Budownictwa Wodnego PAN
Tematy:
stream-groundwater interactions
hyporheic zone
benthic zone
stream ecology
Opis:
Recent interest in the effects of streambed and near-subsurface (benthic and hyporheic) processes on stream ecosystems has motivated study of the hydrodynamics of stream-subsurface interactions. Hydrodynamic transport places an important control on the delivery of reactive species such as contaminants and ecologically-relevant substances such as nutrients to the benthic and hyporheic zones. Conversely, biological pro-cesses such as biofilm growth and physicochemical processes such as colloid deposition can alter the transport environment within sedimentary systems. Multiple feedbacks between biological, chemical, and transport processes make these interfacial sedimentary environments very com-plex. Experimental results are presented to illustrate the feedbacks be-tween hydrodynamic stream-subsurface exchange, biofilm development, and fine particle deposition. These studies demonstrate that a compre-hensive interdisciplinary approach is required to assess even the most basic dynamic processes in these systems, such as the evolution of in-terfacial fluxes over time. We suggest that it is useful to consider these processes to be biophysicochemical in nature. That is, in such complex environmental systems, it is misleading to attempt to consider processes in isolation; rather, understanding of system dynamics can only come from an integrated approach that considers feedbacks among and be-tween biological, physical, and chemical processes.
Źródło:
Archives of Hydro-Engineering and Environmental Mechanics; 2003, 50, 2; 107-123
1231-3726
Pojawia się w:
Archives of Hydro-Engineering and Environmental Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Acoustical studies of some synthesized Schiff base derivatives in dimethylsulphoxide at 303.15 K, by ultrasonic velocity measurement
Autorzy:
Gopi, C.
Santhi, N.
Powiązania:
https://bibliotekanauki.pl/articles/412151.pdf
Data publikacji:
2014
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
density
viscosity
ultrasonic velocity
DMSO
acoustical parameters
molecular interactions
Opis:
The density, viscosity and sound velocity of five Schiff bases (1-5) derivatives in DMSO solutions have been studied at 303.15 K over a wide range of concentration. From these experimental data, some acoustical parameters such as Molar volume (Vm), Specific Acoustic Impedance (Z), Adiabatic compressibility (βad), Intermolecular Free Length (Lf), Rao’s Constant (R), Molar compressibility (W), Relaxation time(τ), van der Waals constant (b), Relaxation strength (r), Relative association (RA), Isothermal compressibility (βT ) , Isothermal expansion co-efficient (α) ,Free volume (Vf) and Internal pressure (πi) and Ultrasonic attenuation (α/f²) have been evaluated. A fairly good correlation between a given parameter and concentration is observed. The results are interpreted in terms of molecular interactions like solvent-solvent, solvent-solute and solute-solute interactions.
Źródło:
International Letters of Chemistry, Physics and Astronomy; 2014, 17, 1; 50-66
2299-3843
Pojawia się w:
International Letters of Chemistry, Physics and Astronomy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Hyperfine interactions and irreversible magnetic behavior in multiferroic Aurivillius compounds
Autorzy:
Jartych, E.
Gąska, K.
Przewoźnik, J.
Kapusta, C.
Lisińska-Czekaj, A.
Czekaj, D.
Surowiec, Z.
Powiązania:
https://bibliotekanauki.pl/articles/147358.pdf
Data publikacji:
2013
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
Aurivillius compounds
hyperfine interactions
magnetic properties
Mössbauer spectroscopy
multiferroics
Opis:
In this work investigations of structure and magnetic properties of conventionally sintered Bim+1Ti3Fem.3O3m+3 compounds with 4 less-than or equal to m less-than or equal to 8 were performed using X-ray diffraction, Mossbauer spectroscopy and vibrating sample magnetometry. Room-temperature Mossbauer spectra of the compounds correspond to a paramagnetic state, however, low temperature measurements (80 K) reveal the antiferromagnetic state with a residual paramagnetic phase. Temperature dependencies of magnetic susceptibility,chi sigma(T), provided magnetic ordering temperatures and revealed an irreversibility in Aurivillius compounds with m greater-than or equal to 5. In the case of Bi5Ti3FeO15 compound the chi sigma(T) dependence shows a paramagnetic behavior down to 2 K. The Bi6Ti3Fe2O18 compound reveals a magnetic ordering at 11 K. The compounds with m = 6-8 show a magnetic ordering at temperatures higher than 200 K. Highly irreversible character of their temperature dependencies of chi sigma indicates a spin-glass type disordered magnetism with frustration due to a random distribution of Fe on Ti at their sites.
Źródło:
Nukleonika; 2013, 58, 1; 47-51
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A simplified analysis of the effect of nano-asperities on particle-bubble interactions
Autorzy:
Drelich, J. W.
Powiązania:
https://bibliotekanauki.pl/articles/109482.pdf
Data publikacji:
2018
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
colloidal interactions
flotation
energy barrier
DLVO model
roughness effect
Opis:
The interactions of gas bubbles with particles having rough and heterogeneous surfaces are much more complex than the commonly used DLVO – based models predict. The effects of surface roughness on flotation and particle – bubble interactions have been reported many times in the past, although a clear understanding of their origins has been lacking. To explain differences in interactions for spherical hydrophobic particles, a theoretical analysis of the interaction potential was carried out for a model rough particle interacting with a bubble surface in an electrolyte solution in this study. The attractive hydrophobic interaction potential was added to repulsive retarded van der Waals and repulsive electrical double layer interaction potentials. The rough microscopic particles were modeled as spheres decorated with nano-sized asperities. Parameters that reflect common flotation separation systems were selected for testing this theoretical model and computation of the energy barrier applicable to particle – flat bubble surface interactions. It was found that hydrophobic asperities with a height of only several nanometers can reduce the repulsive interaction energy by an order of magnitude. Theoretical analysis also reveals that surface coverage of microscopic particles by nano-sized asperities is important as well.
Źródło:
Physicochemical Problems of Mineral Processing; 2018, 54, 1; 10-18
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wetting of surfaces with ionic liquids
Autorzy:
Poleski, M.
Luczak, J.
Aranowski, R.
Jungnickel, C.
Powiązania:
https://bibliotekanauki.pl/articles/110857.pdf
Data publikacji:
2013
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
ionic liquid
wettability
contact angle
capillary rise
surface interactions
Opis:
The paper focuses on assessing wettability of surfaces modified with ionic liquid solutions. Dialkylimidazolium chlorides have been selected as the test group, because of their immediate availabil-ity and limited previous research. Contact angle of selected ionic liquid solutions have been measured with two methods: capillary rise test and simplified sitting droplet analysis, performed by means of digital camera. During tests the extremely high viscosity of dialkylimidazolium chlorides has been observed to drop rapidly with prolonged exposition to atmospheric moisture and measured experimentally with Karl-Fischer titration and viscosity measurements. Contact angles of selected ionic liquids have been presented.
Źródło:
Physicochemical Problems of Mineral Processing; 2013, 49, 1; 277-286
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Revisiting the Open-End Reflection Coefficient and Turbulent Losses in an Organ Pipe with Low Mach Number Flow
Autorzy:
Hruška, Viktor
Dlask, Pavel
Powiązania:
https://bibliotekanauki.pl/articles/1953497.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
organ pipe
reflection coefficient
end correction
flow-acoustic interactions
Opis:
The reflection coefficient of the open end belongs among the essential parameters in the physical description of a flue organ pipe. It leads directly to practical topics such as the pipe scaling. In this article, sound propagation is investigated inside an organ pipe with the most intense mean flow that is achievable under musically relevant conditions. A theoretical model is tested against the experimental data to obtain a suitable formula for the reflection coefficient when a non-negligible flow through the open end is considered. The velocity profile is examined by means of particle image velocimetry. A fully developed turbulent profile is found and interactions of the acoustic boundary layer with the turbulent internal flow are discussed. A higher value of the end correction than expected from the classical result of Levine and Schwinger is found, but this feature shall be associated with the pipe wall thickness rather than the mean flow effects.
Źródło:
Archives of Acoustics; 2021, 46, 2; 197-204
0137-5075
Pojawia się w:
Archives of Acoustics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Interakcje w procesie socjalizacji rodzajowej dzieci w przedszkolu
Autorzy:
Pietryczuk, Bożena
Powiązania:
https://bibliotekanauki.pl/articles/606675.pdf
Data publikacji:
2018
Wydawca:
Uniwersytet Marii Curie-Skłodowskiej. Wydawnictwo Uniwersytetu Marii Curie-Skłodowskiej
Tematy:
socialization, interactions, sex, gender
socjalizacja, interakcje, płeć, rodzaj
Opis:
In the socialization process, a child learns social interactions, interpersonal relations and coexistence in the group, social standards and standards of conduct. Additionally, children develop their personality and character. One of the most essential part of the socialization process is the preparation to fulfill male and female roles. Preschool significantly affects the formation of gender roles. This research involves interactions between preschoolers and their teachers. Furthermore, it deals with the influence of the interactions on the development of child’s social-cultural gender.
W procesie socjalizacji dziecko uczy się podstaw interakcji społecznych, życia i funkcjonowania w grupie, poznaje społeczne normy postępowania i zachowania, kształtuje swoją osobowość i cechy charakteru. Jednym z najważniejszych zakresów tego rozwoju jest przygotowanie do pełnienia ról kobiety i mężczyzny. W procesie socjalizacji dzieci w zakresie kształtowania ról rodzajowych istotną rolę odgrywa przedszkole. Opisane badania dotyczą interakcji między nauczycielkami a wychowankami w przedszkolu oraz ich wpływu na kształtowanie płci społeczno-kulturowej (rodzaju) dzieci.
Źródło:
Lubelski Rocznik Pedagogiczny; 2018, 37, 1
0137-6136
Pojawia się w:
Lubelski Rocznik Pedagogiczny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Magnetotransport and magnetic properties of manganites doped with iron and aluminum
Autorzy:
Troyanchuk, I.
Bushinsky, M.
Tereshko, N.
Fedotova, V.
Powiązania:
https://bibliotekanauki.pl/articles/118349.pdf
Data publikacji:
2017
Wydawca:
Politechnika Koszalińska. Wydawnictwo Uczelniane
Tematy:
magnetoresistance
magnetic interactions
magnetization
magnetorezystancja
oddziaływania magnetyczne
magnetyzacja
Opis:
The single crystals of La0.7Ba0.3(Mn1-xFex)O3 (x ≤ 0.28) and La0.7Ba0.3(Mn1-xAlx)O3 (x ≤ 0.15) compositions were grown using flux method and characterized by X-ray, electrical and magnetization measurements. The replacement of Mn ions by Al ions in the La0.7Ba0.3Mn1-xAlxO3 system leads to a decrease in the temperature to 311 K for the sample x=0.1. The Fe-doping above x=0.2 destroys a long range ferromagnetic order thus leading to a spin glass state. It is found that insulating spin glasses exhibit a large magnetoresistance in the paramagnetic region that is comparable to that for ferromagnetic crystals showing metal–insulator transition near TC.
Monokryształy La0,7Ba0,3(Mn1-xFex)O3 (x ≤ 0,28) i La 0,7Ba 0,3 (Mn1-xAlx)O3 (x ≤ 0,15) wyhodowano metodą strumieniową i charakteryzowano poprzez badania rentgenowskie, pomiary elektryczne i magnetyzacyjne. Zastąpienie jonów Mn jonami Al w układzie La0,7Ba0,3Mn1-xAlxO3 prowadzi do obniżenia temperatury do 311 K dla próbki x = 0,1. Domieszka Fe powyżej x = 0,2 niszczy ferromagnetyczny porządek dalekiego zasięgu atomów Fe, prowadząc w ten sposób do spinowego stanu typu szkła. Stwierdzono, że izolacyjny spinowy stan typu szkła wykazuje dużą rezystancję magnetyczną w obszarze paramagnetycznym, która jest porównywalna z kryształami ferromagnetycznymi i wykazują przejście metal-izolator w pobliżu TC.
Źródło:
Zeszyty Naukowe Wydziału Elektroniki i Informatyki Politechniki Koszalińskiej; 2017, 11; 5-10
1897-7421
Pojawia się w:
Zeszyty Naukowe Wydziału Elektroniki i Informatyki Politechniki Koszalińskiej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Structure and hyperfine interactions of multiferroic Bim+1Ti3Fem-3O3m+3 ceramics prepared by mechanical activation
Autorzy:
Mazurek, M.
Jartych, E.
Oleszak, D.
Powiązania:
https://bibliotekanauki.pl/articles/147810.pdf
Data publikacji:
2013
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
Aurivillius compounds
hyperfine interactions
mechanical activation
Mössbauer spectroscopy
Opis:
The structure and hyperfine interactions in the Bi5Ti3FeO15, Bi6Ti3Fe2O18 and Bi7Ti3Fe3O21 multiferroic ceramics were studied using X-ray diffraction and Mössbauer spectroscopy. Samples were prepared by mechanical activation process in a high-energy ball mill from a mixture of TiO2, Fe2O3 and Bi2O3 oxides as polycrystalline precursor materials. The mechanical milling process was completed by thermal processing. A pure single-phased material was obtained in the case of Bi7Ti3Fe3O21 compound. The proposed mechanical activation technology allows to produce the Aurivillius compounds at lower temperature, by about 50 K, as compared to the solid-state sintering method.
Źródło:
Nukleonika; 2013, 58, 1; 143-147
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mössbauer study of magnetite nanowire in MCM-41 type mesoporous silica templates
Autorzy:
Surowiec, Z.
Goworek, J.
Ryczkowski, J.
Budzyński, M.
Wiertel, M.
Sarzyński, J.
Powiązania:
https://bibliotekanauki.pl/articles/148203.pdf
Data publikacji:
2007
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
hyperfine interactions
Mössbauer effect
MCM-41 silica
nanowires
Opis:
Arrays of Fe3O4 nanowires embedded in mesoporous ordered silica were obtained in two ways: dissolving Fe3+ ions in an aqueous medium and their adsorption on internal and external surfaces, with the use of a Fe-EDTA complex. Magnetite polycrystalline nanowires were characterized by means of X-ray diffraction and 57Fe Mössbauer spectroscopy (MS). The average length of these nanowires is about 70 nm and their diameter is about 3 nm. Mössbauer studies evidenced that the composites consist of very small Fe3O4 particles. Almost 80% of particles exist in a paramagnetic state.
Źródło:
Nukleonika; 2007, 52, supl. 1; 33-36
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Theoretical evaluation of ultrasonic velocities of binary liquid mixtures of 1-bromopropane in chlorobenzene at 303.15, 308.15, 313.15 and 318.15 K
Autorzy:
Babu, Ch. P.
Kumar, G. P.
Nagarjun, B.
Samatha, K.
Powiązania:
https://bibliotekanauki.pl/articles/412079.pdf
Data publikacji:
2014
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
ultrasonic velocities
molecular interactions
1-bromopropane and chlorobenzene
Opis:
Theoretical velocities of binary liquid mixtures of 1-bromopropane with chlorobenzene at 2 MHz and four different temperatures 303.15, 308.15, 313.15 and 318.15 K, have been evaluated as a function of concentration and temperature. The experimental values are compared with theoretical models of liquid mixtures such as Nomoto, Van Dael-Vangeel, Impedance Relation, Rao’s Specific Velocity Method, Junjie’s relations and Free Length Theory. In the chosen system there is a good agreement between experimental and theoretical values calculated by Nomoto’s theory. The deviation in the variation of U2exp/ U2imx from unity has also been evaluated for explaining the non ideality in the mixtures. The results are explained in terms of intermolecular interactions occurring in these binary liquid mixtures.
Źródło:
International Letters of Chemistry, Physics and Astronomy; 2014, 11, 1; 9-17
2299-3843
Pojawia się w:
International Letters of Chemistry, Physics and Astronomy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Acoustical studies of binary liquid mixtures of p-chlorotoluene in benzene at different temperatures
Autorzy:
Kumar, G. P.
Babu, Ch. P.
Samatha, K
Jyosthna, A. N.
Showrilu, K.
Powiązania:
https://bibliotekanauki.pl/articles/412275.pdf
Data publikacji:
2014
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
ultrasonic velocity
thermodynamic parameters
p-chlorotoluene
molecular interactions
Opis:
Ultrasonic velocities (U), densities (ρ), and coefficient of viscosities (η) are measured for binary mixtures containing (i) p-chlorotoluene and (ii) benzene at 303.15 K, 308.15 K, 313.15 K and 318.15 K to understand the molecular interaction. Various acoustical parameters such as adiabatic compressibility (βad), free length (Lf), acoustic impedance (Z), free volume (Vf), molar volume (Vm), Rao’s constant (R), Wada’s constant (W) and internal pressure (πi), are calculated from the measured values of U, ρ, and η. The trend in acoustical parameters also substantiates to asses strong molecular interactions.
Źródło:
International Letters of Chemistry, Physics and Astronomy; 2014, 10; 25-37
2299-3843
Pojawia się w:
International Letters of Chemistry, Physics and Astronomy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Selected problems of the relation between pain-immunity and depression
Autorzy:
Ortenburger, Dorota
Rodziewicz - Gruhn, Joanna
Jacek, Wąsik
Marfina, Olga
Polina, Natalya
Powiązania:
https://bibliotekanauki.pl/articles/1031730.pdf
Data publikacji:
2017
Wydawca:
PPHU Projack Jacek Wąsik
Tematy:
chronic pain
closed circle
depression
immunity system
interactions
Opis:
The paper presents selected problems of the coexistence of chronic pain and depression . It has been assumed that chronic pain and depression make two se parate ailments that often coexist. The phenomenon of the coexistence of physical symptoms (including pain) and depression have been widely popularised. Over 65% of patients with pain ailments suffer from depression that is often undiagnosed. The therapi sts specify this phenomenon as a “closed circle”, as it is not known what the beginning of its appearance was. On one hand, pain often hides the symptoms of depression so effectively that its recognition by a physician seems impossible; on the other, it is known that chronic pain causes continual lowering of mood and depression that increases pain ailments. Moreover, the existence of common neurobiological mechanisms makes depression and pain escalate mutually.
Źródło:
Physical Activity Review; 2017, 5; 74-77
2300-5076
Pojawia się w:
Physical Activity Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The economic situation and social interactions of prisoners’ families
Autorzy:
Dzierzyńska-Breś, Sonia
Powiązania:
https://bibliotekanauki.pl/articles/941459.pdf
Data publikacji:
2020-10-15
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
social situation
social interactions
families of prisoners
imprisonment
Opis:
This article shows the current state of knowledge about: the economic situation and social interactions of families of prisoners. An in-depth analysis of own research, as well as those presented so far in Polish and foreign literature, has allowed to distinguish three types of social situations of families of prisoners, with particular emphasis on their economic situation and social interactions, namely; (1) the social situation of a family supporting the resocialization of the prisoner, (2) the social situation of a prisoner’s family, which is in opposition to the process of resocialization, (3) the social situation of a family focused on the reconstruction of its own social environment.
Źródło:
Interdyscyplinarne Konteksty Pedagogiki Specjalnej; 2020, 29; 193-210
2300-391X
Pojawia się w:
Interdyscyplinarne Konteksty Pedagogiki Specjalnej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Lipid-binding proteins as stabilizers of membrane microdomains - possible physiological significance.
Autorzy:
Bandorowicz-Pikuła, Joanna
Powiązania:
https://bibliotekanauki.pl/articles/1044288.pdf
Data publikacji:
2000
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
lipid-protein interactions
lipid-binding proteins
membrane microdomains
Opis:
Below the melting point temperature of lipids, artificial lipid membranes usually exist in the ordered gel phase. Above these temperatures lipid acyl chains become fluid and disordered (liquid-crystalline phase). Depending on the chemical composition of artificial membranes, phase separation may occur, leading to the formation of transient or stable membrane domains. A similar phase separation of lipids into ordered and disordered domains has been observed in natural membranes at physiological temperature range. Moreover, it has been reported that certain proteins prefer certain organization of lipids, as for example glycosylphosphatidylinositol-anchored proteins or Src family of tyrosine kinases. The aim of present review is to discuss the possibility that some lipid microdomains are induced or stabilized by lipid-binding proteins that under certain conditions, for example due to a rise of cytosolic Ca2+ or pH changes, may attach to the membrane surface, inducing clustering of lipid molecules and creation of ordered lipid microdomains. These domains may than attract other cytosolic proteins, either enzymes or regulatory proteins. It is, therefore, postulated that lipid microdomains play important roles within a cell, in signal transduction and enzymatic catalysis, and also in various pathological states, as Alzheimer's disease, anti-phosphatidylserine syndrome, or development of multidrug resistance of cancer cells.
Źródło:
Acta Biochimica Polonica; 2000, 47, 3; 553-564
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of acetylsalicylic acid on hematotoxicity of benzene
Autorzy:
Kowalówka-Zawieja, Joanna
Zielińska-Psuja, Barbara
Przystanowicz, Jędrzej
Sommerfeld, Karina
Powiązania:
https://bibliotekanauki.pl/articles/2179057.pdf
Data publikacji:
2013-10-01
Wydawca:
Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
Tematy:
benzene
acetylsalicylic acid
interactions
hematotoxicity
blood
bone marrow
Opis:
Objectives: The aim of the study was to evaluate the influence of acetylsalicylic acid (ASA) on benzene hematotoxicity in rats. Materials and Methods: The study was carried out on rats exposed for 2, 4 and 8 weeks to benzene vapour at a conentration of 1.5 or 4.5 mmol/m³ of air (5 days per week, 6 hours per day) alone or together with ASA at the doses of 5, 150 or 300 mg/kg body weight (per os). Results: Benzene at a concentration of 4.5 mmol/m³ caused a slight lymphopenia, granulocytosis and reticulocytosis in blood. In bone marrow traits of megaloblastic renewal, presence of undifferentiated cells and giant forms of granulocytes as well as an increase in myeloperoxidase and decrease in chloroacetate esterase activity and lipids content were noted. ASA (150 and 300 mg/kg b.w.) influenced some of hematological parameters, altered by benzene intoxication. ASA limited the solvent-induced alteration in blood reticulocyte count and in the case of bone marrow in the erythroblasts count. Traits of megaloblastic renewal in bone marrow were less pronounced. Besides, higher activity of myeloperoxidase and the decrease in the level of lipids in granulocytes were noted. Conclusion: Our results suggest that ASA limited the benzene-induced hematotoxicity.
Źródło:
International Journal of Occupational Medicine and Environmental Health; 2013, 26, 5; 802-812
1232-1087
1896-494X
Pojawia się w:
International Journal of Occupational Medicine and Environmental Health
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Leki neuroleptyczne a żywność – możliwości niebezpiecznych interakcji
Neuroleptics and the food – the possibility of dangerous interactions
Autorzy:
Trnka, Jakub
Rosińczuk-Tonderys, Joanna
Kwapisz, Dominika
Powiązania:
https://bibliotekanauki.pl/articles/470159.pdf
Data publikacji:
2012
Wydawca:
Europejskie Centrum Kształcenia Podyplomowego
Tematy:
leki neuroleptyczne
żywność
interakcje
neuroleptic drugs
food
interactions
Opis:
Interakcje między lekami a żywnością to temat wciąż niezbadany i budzący liczne wątpliwości. W związku z tym pacjenci, ale także lekarze czy farmaceuci często nie w pełni zdają sobie sprawę z istniejących zagrożeń. W grupie leków neuroleptycznych interakcje te dotyczą powszechnych artykułów spożywczych, jak: kawa, herbata (z uwagi na obecność taniny), produkty kofeinowe oraz sól kuchenna. Na skutek zmniejszenia wchłaniania, zmian metabolizmu lub upośledzenia wydalania może dochodzić do zmniejszenia lub braku skuteczności podjętego leczenia, bądź do nasilonych działań niepożądanych i niebezpiecznych powikłań. Artykuł opisuje zjawisko interakcji neuroleptyków z artykułami spożywczymi, a także zawiera zalecenia umożliwiające ograniczenie ich występowania.
Interactions between drugs and food are still an unexplored and unclear area. That’s why patients, doctors and pharmacists sometimes don’t fully understand and realize existing dangers. In the neuroleptic group, the interactions pertain to popular food products such as coffee, tea (due to the presence of tannin), caffeine products and salt. Lowering of absorption, changes of metabolism, defective excretion may result in reduction or absence of effectiveness of therapy or intensive, unwanted effects and dangerous complications. The article describes the phenomenon of interaction of neuroleptics with food products and offers recommendations which allow their reduction.
Źródło:
Współczesne Pielęgniarstwo i Ochrona Zdrowia; 2012, 1; 11-13
2084-4212
Pojawia się w:
Współczesne Pielęgniarstwo i Ochrona Zdrowia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Niepowodzenie lecznicze spowodowane interakcjami między lekami anksjolitycznymi a żywnością
Failure of treatment due to interactions between anxiolytics drugs and food
Autorzy:
Trnka, Jakub
Kwapisz, Dominika
Rosińczuk-Tonderys, Joanna
Powiązania:
https://bibliotekanauki.pl/articles/470248.pdf
Data publikacji:
2012
Wydawca:
Europejskie Centrum Kształcenia Podyplomowego
Tematy:
leki anksjolityczne
żywność
interakcje
anxiolytics drugs
food
interactions
Opis:
Zjawisko interakcji między jednocześnie stosowanymi substancjami może znacząco zmienić skuteczność farmakoterapii. Wpływ używek na leczenie czy wzajemnie oddziaływania między lekami jest dobrze znany, jednak interakcje między lekami a substancjami zawartymi w żywności są zbadane niedostatecznie. Wiele leków anksjolitycznych może wchodzić w niebezpieczne interakcje z popularnymi produktami, takimi jak: mleko, czosnek, kofeina, sok grejpfrutowy. W wyniku tego zmianie ulega farmakokinetyka lub farmakodynamika, co może mieć istotny wpływ na efekty podjętego leczenia.
The phenomenon of interaction between simultaneously applied substances can substantially change the effectiveness of pharmacotherapy. While the effects of stimulants on therapy or mutual interactions between medicines are well known, the interactions between medicines and substances in foods have not received sufficient attention. Numerous anxiolytics can enter into interactions with such products as milk, garlic, caffeine, grapefruit juice. The resulting change in pharmacokinetics or pharmacodynamics can have significant influence on the effects of treatment.
Źródło:
Współczesne Pielęgniarstwo i Ochrona Zdrowia; 2012, 2; 27-29
2084-4212
Pojawia się w:
Współczesne Pielęgniarstwo i Ochrona Zdrowia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Variability of water exchange in the hyporheic zone of a lowland river in Poland based on gradientometric studies
Autorzy:
Marciniak, Marek
Ziułkiewicz, Maciej
Górecki, Michał
Powiązania:
https://bibliotekanauki.pl/articles/15804667.pdf
Data publikacji:
2022
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
groundwater–river water interactions
hyporheic zone
gradientmeter
Moszczenica River
Polska
Opis:
The Moszczenica is a lowland river, which is a third-order river with a length of 55 km; it flows into the Bzura River in central Poland. The objective of this study was to evaluate two important factors in the exchange between surface water and groundwater in the hyporheic zone: a considerable change in water flow conditions and various origins of riverbed sections, natural and artificial. To identify the spatial variation of the hydraulic gradient in the hyporheic zone of the river, a gradientmeter was applied. The measurements show that at low water stages, upwelling was dominant, with an evidently inactive zone, whereas downwelling was inconsiderable. However, the morphology of the riverbed changed during the flood flow, and downwelling clearly dominated. Upwelling zones retained their activity despite a major change in hydrological conditions. Present studies on the artificially dug Moszczenica Canal have documented outflow of water from an artificial medieval canal to a naturally formed drainage base. This means that despite the passage of hundreds of years, the natural drainage base of the Moszczenica River is still active. Studies have demonstrated the applicability of the gradientmeter for evaluating the interaction between surface and ground-waters in the hyporheic zone.
Źródło:
Quaestiones Geographicae; 2022, 41, 3; 141-156
0137-477X
2081-6383
Pojawia się w:
Quaestiones Geographicae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
General equation for directed electromagnetic wave propagation in 1D metamaterial: projecting operator method
Autorzy:
Ampilogov, D.
Leble, S.
Powiązania:
https://bibliotekanauki.pl/articles/1938596.pdf
Data publikacji:
2016
Wydawca:
Politechnika Gdańska
Tematy:
metamaterials
directed waves interactions
Drude dispersion
Kerr nonlinearity
solitary solutions
Opis:
We consider a boundary regime problem for 1D wave propagation in a metamaterial medium with simultaneously negative dielectric permittivity and magnetic permeability. We apply a projecting operator method to the Maxwell system in the time domain that allows the space of the linear propagation problem to be split into subspaces of directed waves for the relations of a given material with general dispersion. After projection, the equations for directed waves have a maximally simplified form, which is most convenient for numerical and analytical integration. Matrix elements of the projectors act as integral operators. For a given nonlinearity and dispersion we derive a general system of interacting right/left waves with combined (hybrid) amplitudes. The result is specified for the Drude metamaterial model for both permittivity and permeability coefficients and the Kerr nonlinearity. We also discuss and investigate singular solitary wave solutions of the system as a limit stationary elliptic system related to some boundary regimes.
Źródło:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2016, 20, 2; 143-155
1428-6394
Pojawia się w:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Beginnings of Human Reasoning: Manifestations of Induction, Deduction and Abduction in Hominid Activities
Autorzy:
Ratajczyk, Dawid
Powiązania:
https://bibliotekanauki.pl/articles/1008834.pdf
Data publikacji:
2017-10-13
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
reasoning
evolution
induction
deduction
abduction
hominids
hunter-gatherers
social interactions
Opis:
Reasoning is a significant feature of humans and it might be one of the main reasons for their evolutionary success. Reasoning is a broad concept and can be divided into types (according to a classification system). Logical classifications propose to distinguish inductive, deductive and abductive reasoning.I try to investigate at which point of human evolution particular types of reasoning arose and why. The study presents deliberation on changes in human lifestyle and their impact on reasoning. It also presents possible hominid activities, which evidence usage of different types of reasoning at different stages of human evolution. Early stages (passive scavengers) suggest no need for creative reasoning. It seems induction was sufficient for hominids to perform their activities. However, some strategies of food foraging applied by hunter-gatherers suggest the usage of abductive reasoning. Social interactions need transitive reasoning to occur and this is an indication of deductive reasoning. I put forward a hypothesis that abduction is necessary to create beliefs, so the ability to abduct arose when humans started to consider afterlife at the latest. I also suggest that abductive reasoning is one of the newest achievements in human evolution.
Źródło:
Studia z kognitywistyki i filozofii umysłu; 2017, 10, 1
2082-7083
Pojawia się w:
Studia z kognitywistyki i filozofii umysłu
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wrażliwość zapisana w algorytmach? Między technomorfizacją człowieka a antropomorfizacją maszyny
Sensitivity encoded in algorithms? Between human technomorphization and machine anthropomorphization
Autorzy:
Krzysztofek, Kazimierz
Powiązania:
https://bibliotekanauki.pl/articles/1853713.pdf
Data publikacji:
2018
Wydawca:
Narodowe Centrum Kultury
Tematy:
wrażliwość
technomorfizacja
antropomorfizacja
interakcje
technologie
sensitivity
technomorphization
anthropomorphization
interactions
technologies
Opis:
Observing our life in the modern world of today’s technology, the author is wondering whether we are facing sensitization or desensitization of technology users. The problem is discussed in the context of technomorphization of humans on the one hand, and anthropomorphisation of machines on the other. In the analysis the sociological approach is confronted with other perspectives, particularly the cognitive and anthropological ones, which are inevitable in HMI (human-machine interaction) studies. The author concludes by trying to answer a number of questions: Are we truly experiencing technomorphization? Is it only bringing us harm, or does it also have something useful to offer? Can the technology support sensitivity? And finally, will the machines themselves not turn out to be pre-programmed for sensitivity in the future?
Źródło:
Kultura Współczesna. Teoria. Interpretacje. Praktyka; 2018, 103, 4; 24-40
1230-4808
Pojawia się w:
Kultura Współczesna. Teoria. Interpretacje. Praktyka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
X-ray diffraction and vibrational spectroscopic studies of the intermolecular interactions on the grinding and compaction behaviours of lopinavir and ritonavir crystals
Autorzy:
Ainurofiq, Ahmad
Setianto, Arif B.
Nugraha, Yuda P.
Suendo, Veinardi
Uekusa, Hidehiro
Soewandhi, Sundani N.
Powiązania:
https://bibliotekanauki.pl/articles/895537.pdf
Data publikacji:
2020-04-29
Wydawca:
Polskie Towarzystwo Farmaceutyczne
Tematy:
compression
grinding
Vibrational spectroscopy
Ritonavir
intermolecular interactions lopinavir
crystal behaviour
Opis:
Lopinavir (LPV) and ritonavir (RTV) are anti-viral drugs used in combination and commonly prepared through hot-melt extrusion techniques. Mechanical processes are greatly involved, including blending and milling. Therefore, the crystal behaviour of LPV and RTV under the mechanical process is an interesting study. Here, the LPV, RTV, and their mixtures were processed by two different treatments: grinding and compression processes. The solid-state properties of the drugs were evaluated by powder x-ray diffraction (PXRD), differential scanning calorimetry (DSC), Fourier transform infrared spectroscopy (FTIR), Raman spectroscopy, and scanning electron microscopy (SEM). Single-crystal XRD analysis was also carried out to confirm the packing structure in the crystal lattice. It was observed that LPV was very sensitive to the grinding process, where it tends to form an amorphous solid in both the pure and mixture forms. On the other hand, RTV has a very stable crystalline structure and was able to retain its crystallinity even under grinding. Both LPV and RTV were observed to be quite stable under compression, where both retained their crystalline form with only slight changes in their d-spacing values. This study highlighted the molecular origin of LPV and RTV crystal behaviour after grinding and compression processes.
Źródło:
Acta Poloniae Pharmaceutica - Drug Research; 2020, 77, 2; 259-269
0001-6837
2353-5288
Pojawia się w:
Acta Poloniae Pharmaceutica - Drug Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On responsible research and innovation – an old concconcept clad in new clothes
O odpowiedzialnych badaniach i innowacjach – stare pojęcie w nowych szatach
Autorzy:
Zieliński, Adam
Powiązania:
https://bibliotekanauki.pl/articles/526724.pdf
Data publikacji:
2016-04-30
Wydawca:
Uniwersytet Opolski. Instytut Nauk o Zdrowiu
Tematy:
responsibility
innovation
science society interactions
odpowiedzialność
innowacje
relacje nauka–społeczeństwo
Opis:
A fast evolution of science and technology often raises controversies. Numerous cases of research results which had been questioned or rejected by public opinion have clearly demonstrated that public concerns can be neither ignored nor reduced to the question of risk. Science no longer enjoys a special status and society is getting more and more concerned about the purposes and motivations of research, and demands to be included in the decision making process on research agenda. The article presents a concept of Responsible Research and Innovation – its roots and potential to address the problem of (a lack of) legitimacy without doing harm to research. The author points also that the concept of Responsible Research and Innovation (RRI) raises a lot of controversies. It looks like yet another attempt to manage science and to steer it more towards politically defined goals. Although it calls for public opinion to be more involved in setting agenda for research, it does not explain clearly how this involvement should actually be organized to be labelled “responsible”. When analysed in depth, RRI appears to be quite complicated as it defines responsible research and innovation both through their outcomes and through a set of requirements that research and innovation processes should fulfil. Finally, it causes confusion since it gathers too many differing aspects of research and innovation-related activities under the same roof.
Szybki rozwój nauki i technologii często budzi kontrowersje. Liczne przykłady badań, które zostały zakwestionowane lub odrzucone przez opinię publiczną pokazały dobitnie, że obawy społeczeństw nie powinny być ani ignorowane, ani ograniczane do kwestii ryzyka. Nauka nie cieszy się już specjalnym statusem w społeczeństwie, a obywatele są coraz bardziej zainteresowani celami i motywacją stojącą za prowadzonymi badaniami naukowymi i domagają się włączenia w proces decyzyjny dotyczący przedmiotu i zakresu prowadzonych badań. Niniejszy artykuł prezentuje pojęcie „odpowiedzialne badania i innowacje” (OBI) – jego źródła, a także potencjału do rozwiązania problemu (braku) legitymizacji bez szkody dla samej nauki. Autor wskazuje również, że pojęcie to budzi wiele kontrowersji. Wygląda ono bowiem jak kolejna próba wywarcia wpływu na naukę i pokierowania zainteresowań naukowców w stronę politycznie zdefiniowanych celów. Chociaż pojęcie to zakłada większe zaangażowanie opinii publicznej w ustalaniu agendy badawczej dla nauki, nie wyjaśnia ono jednak precyzyjnie, jak takie zaangażowanie powinno wyglądać, aby dane badania naukowe lub działalność innowacyjną można było określić jako „odpowiedzialne”. Kiedy przyjrzymy się bliżej definicji OBI, to okazuje się, że termin ten jest dość skomplikowany, jako że odpowiedzialne badania i innowacje definiowane są zarówno pod kątem ich wyników, jak i spełniania przez sam proces badawczy czy innowacyjny określonych parametrów. Poza tym, pojęcie OBI może powodować pewną dezorientację, że względu na to, iż łączy zbyt wiele różnych aspektów działalności badawczej i innowacyjnej.
Źródło:
Puls Uczelni; 2016, 1; 28-31
2080-2021
Pojawia się w:
Puls Uczelni
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fiscal Policies and Monetary Leadership in a Monetary Union with a Deficit-Concerned Central Bank
Autorzy:
Chortareas, Georgios
Mavrodimitrakis, Christos
Powiązania:
https://bibliotekanauki.pl/articles/483333.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
strategic interactions
EMU
monetary leadership
fiscal cooperation
central bank's objectives
Opis:
We consider fiscal and monetary policy interactions in a monetary union under monetary leadership, when the common central bank is concerned with the average fiscal stance of the union. We use a static two-country monetary union model to investigate the policy-mix problem under different regimes of noncooperation, cooperation, and enforced cooperation among fiscal authorities. We find that fiscal policy is unambiguously countercyclical, a feature that is more pronounced under fiscal policy cooperation. Monetary policy can be either countercyclical or procyclical. A central bank concerned about the aggregate fiscal stance is effective in stabilizing output and central budget, but at the expense of inflation stabilization.
Źródło:
Central European Journal of Economic Modelling and Econometrics; 2011, 3, 1; 1-24
2080-0886
2080-119X
Pojawia się w:
Central European Journal of Economic Modelling and Econometrics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Potencjalna toksyczność klozapiny wynikająca z interakcji
Potential interaction-related toxicity of clozapine
Autorzy:
Siwek, Marcin
Powiązania:
https://bibliotekanauki.pl/articles/944060.pdf
Data publikacji:
2015
Wydawca:
Medical Communications
Tematy:
clozapine
cytochrome P450
interactions
cytochrom p450
interakcje
klozapina
Opis:
Clozapine is an agent which undergoes intensive cytochrome P450-mediated hepatic metabolism (mainly by 1A2 and, to a lesser extent, by 3A4 and 2D6). The combined use of clozapine with drugs that inhibit these isoenzymes, such as ciprofloxacin, erythromycin, fluoxetine, fluvoxamine, elevates clozapine serum levels, thus increasing the risk or severity of adverse effects and complications typical of clozapine therapy. At the same time, enzymatic inductors (e.g. rifampicin, phenytoin, carbamazepine, St. John’s wort, nicotine, cannabinols) might contribute to reduced efficacy or, after their rapid discontinuation, toxicity of clozapine. The occurrence of synergistic adverse effects due to pharmacodynamic properties is another aspect of the interactions of clozapine with other agents. Sedative, hypotonic, anticholinergic, myelotoxic, and convulsive effects might increase after a simultaneous use of clozapine and other agents inducing the same adverse effects. Clozapine should be used with particular caution during infectious diseases as some of antibiotics (e.g. macrolides) as well as other antimicrobials (e.g. fluorochinolones) and antifungals (mainly azoles) may, by inhibiting clozapine metabolism, increase its myelotoxicity. On the other hand, synergistic myelotoxic effects of clozapine and some of antibiotics (clindamycin, metronidazole) or antipyretic and anti-inflammatory agents (e.g. ibuprofen, paracetamol, metamizole) may occur. Due to the high risk of interactions, clozapine is intended mainly for monotherapy. However, knowledge of the pharmacokinetic and pharmacodynamic properties of clozapine, and thus its potential interactions, allows to include this agent, if necessary, in combined therapy, provided that the necessary precautions are taken.
Klozapina to lek podlegający intensywnemu metabolizmowi wątrobowemu z udziałem izoenzymów cytochromu P450 (głównie 1A2, w mniejszym stopniu 3A4 i 2D6). Łączne stosowanie leków hamujących wymienione izoenzymy, czyli np. ciprofloksacyny, erytromycyny, fluoksetyny lub fluwoksaminy, skutkuje zwiększeniem stężenia klozapiny we krwi pacjenta, co pociąga za sobą wzrost ryzyka pojawienia się bądź nasilenia działań niepożądanych albo powikłań typowych dla leczenia klozapiną. Jednocześnie induktory enzymatyczne (np. rifampicyna, fenytoina, karbamazepina, wyciąg z dziurawca, nikotyna, kanabinole) mogą przyczynić się do spadku skuteczności klozapiny, a po nagłym odstawieniu – do ujawnienia się jej toksyczności. Kolejnym aspektem interakcji klozapiny z innymi lekami jest sumowanie się działań niepożądanych wynikających z właściwości farmakodynamicznych. Działanie sedatywne, hipotonizujące, antycholinergiczne, mielotoksyczne czy drgawkorodne klozapiny może zatem się nasilić, kiedy będzie ona łączona z innymi substancjami również powodującymi takie działania niepożądane. Szczególnej uwagi wymaga stosowanie klozapiny w trakcie chorób infekcyjnych. Z jednej strony bowiem niektóre podawane wówczas antybiotyki (np. makrolidy) oraz inne leki przeciwbakteryjne (np. fluorochinolony) i przeciwgrzybicze (głównie azole) mogą – przez hamowanie metabolizmu klozapiny – przyczyniać się do nasilania jej mielotoksyczności. Z drugiej strony może dochodzić do sumowania się działania mielotoksycznego klozapiny i pewnych antybiotyków (klindamycyna, metronidazol) czy leków przeciwgorączkowych i przeciwzapalnych (np. ibuprofen, paracetamol, metamizol). Ze względu na wysokie ryzyko interakcji klozapina to lek przeznaczony głównie do monoterapii. Jednak znajomość właściwości farmakokinetycznych i farmakodynamicznych klozapiny i wynikających z nich interakcji pozwala, kiedy jest to konieczne, na włączenie jej w schemat terapii kombinowanej – pod warunkiem zachowania należytej ostrożności.
Źródło:
Psychiatria i Psychologia Kliniczna; 2015, 15, 2; 86-91
1644-6313
2451-0645
Pojawia się w:
Psychiatria i Psychologia Kliniczna
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Rozwojowe współoddziaływanie pokoleń w rodzinie. Rodzice w wieku średnim i dorastające dzieci
Autorzy:
Bakiera, Lucyna
Powiązania:
https://bibliotekanauki.pl/articles/637203.pdf
Data publikacji:
2008
Wydawca:
Uniwersytet Jagielloński. Wydawnictwo Uniwersytetu Jagiellońskiego
Tematy:
circularity, generativity, interactions in family, developmental crisis, Co-influence
Opis:
Developmental co-influence of generation in family. Parents in the middle-age and their adolescent childrenThe main attention in the article is paid to the problem of correspondence between the development of middle-aged adults and their adolescent child. The most important experience is achieved in the family, so the family is called the primary context of human development. Performing parental roles is an activity which is conducive to human development. The variety of changes in adolescence and their peculiarity cause the relationship between parents and adolescents to be problematic, so parents should be very sensitive and candid to children’s problems. They must be flexible as tutors. Activity in the middle-age, which contains different parents’ behaviour, such as being interested in their adolescent children, helping them in their maturation and permission to their growing autonomy bring about a sense of being creative and protect people in this stage of life from the selfish concentration on their own problems. So children could be a chance for a parent’s development, chance of satisfying the need of giving and creating in relation to the younger generation, the need characteristic of this developmental stage. On the other hand adolescents need their parents to grow to be adult, need their emotional and instrumental assistance.Middle-aged parents who lack awareness of the growing teenager's need of developmental changes do not stimulate the child's development and, more importantly, delay the child's and their own personal development. Reciprocal dependence both of the generation in this stage of developmental changes is evident in particular.
Źródło:
Psychologia Rozwojowa; 2008, 13, 1
1895-6297
2084-3879
Pojawia się w:
Psychologia Rozwojowa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Crystal structure and Mössbauer effect in multiferroic 0.5BiFeO3-0.5Pb(Fe0.5Ta0.5)O3 solid solution
Autorzy:
Stoch, A.
Maurin, J.
Stoch, P.
Kulawik, J.
Szwagierczak, D.
Powiązania:
https://bibliotekanauki.pl/articles/146870.pdf
Data publikacji:
2017
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
BiFeO3
crystal structure
hyperfine interactions
multiferroics
solid solution
Opis:
Multiferroic 0.5BiFeO3-0.5Pb(Fe0.5Ta0.5)O3 solid solution is a material that exhibits ferroelectric and antiferromagnetic orderings in ambient temperature. The solid solution was obtained as a result of a conventional reaction in a solid state. The obtained material is a dense, fine-grained sinter whose surface was observed by scanning electron microscopy (SEM) and stoichiometry was confirmed by energy dispersive X-ray spectroscopic (EDS) analysis. According to the X-ray powder diffraction (XRD) measurements, the main phase is R3c space group with admixture of Pm-3m regular phase. Small contribution of pyrochlore-like phase was also observed. Mössbauer spectroscopy suggested random distribution of Fe3+/Ta5+ cations in the B sites of ABO3 compound. Reduction of the magnetic hyperfine field with an increase in the substitution of Ta5+ in Fe3+ neighbourhood was also observed.
Źródło:
Nukleonika; 2017, 62, 2; 177-181
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Structure and Mössbauer spectroscopy studies of mechanically activated (BiFeO3)1-x-(BaTiO3)x solid solutions
Autorzy:
Malesa, B.
Antolak-Dudka, A.
Oleszak, D.
Pikula, T.
Powiązania:
https://bibliotekanauki.pl/articles/148236.pdf
Data publikacji:
2015
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
ceramic solid solutions
hyperfine interactions
mechanical activation
Mössbauer spectroscopy
Opis:
(BiFeO3)1-x-(BaTiO3)x solid solutions with x = 0.1–0.4 and 0.7 were investigated. The ceramics were prepared by mechanical activation technology and subsequent heat treatment. As was proved by X-ray diffraction, increase of BaTiO3 concentration causes a change in the crystalline structure from the rhombohedral structure characteristic of BiFeO3 to a cubic one. 57Fe Mössbauer spectroscopy allowed observation of a gradual transformation from an ordered spin structure of Fe3+ ions to the paramagnetic state with an increase of x.
Źródło:
Nukleonika; 2015, 60, 1; 109-114
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Singular continuous spectrum of half-line Schrodinger operators with point interactions on a sparse set
Autorzy:
Lotoreichik, V.
Powiązania:
https://bibliotekanauki.pl/articles/254871.pdf
Data publikacji:
2011
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
half-line Schrodinger operators
delta-interactions
singular continuous spectrum
Opis:
We say that a discrete set X = {xn}n ∈ N0 on the half-line 0 = x0 < x1 < x2 < x3 < ⋅ ⋅ ⋅< xn < ⋅ ⋅ ⋅,< +∞ is sparse if the distances Δxn = xn+1-xn between neighbouring points satisfy the condition [formula]. In this paper half-line Schrödinger operators with point δ- and δ'- interactions on a sparse set are considered. Assuming that strengths of point interactions tend to ∞ we give simple sufficient conditions for such Schrödinger operators to have non-empty singular continuous spectrum and to have purely singular continuous spectrum, which coincides with R+.
Źródło:
Opuscula Mathematica; 2011, 31, 4; 615-628
1232-9274
2300-6919
Pojawia się w:
Opuscula Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Reading Books as Shared Events. A Performative View on Early Literacy Practices
Autorzy:
Mayer, Johannes
Powiązania:
https://bibliotekanauki.pl/articles/2031258.pdf
Data publikacji:
2020
Wydawca:
Uniwersytet Wrocławski. Oficyna Wydawnicza ATUT – Wrocławskie Wydawnictwo Oświatowe
Tematy:
literary learning
reading-aloud interactions
emotions
performative reading
aesthetics
Opis:
The most important setting for early literary learning is reading-aloud interactions within families. Children gather fundamental experiences with literature as a dialogic imagination with a competent partner who scaffolds the literary learning processes within a temporary supportive interpersonal framework, which can be described as a learning format. The process of experiencing literature is not only determined by reading-aloud and listening but also by multimodal activities and emotions that accompany the reading interaction. Emotions in reading-aloud therefore are more than a para-verbal way of reading or a way to gain joint attention. The performative perspective on reading-aloud formats shows different activities that help the adult and child to establish and experience their interaction as an event. This qualitative case study examines videotaped reading-aloud interactions in which adults and children create the event of reading as a shared goal. The results suggest different categories to describe performative processes and effects. The aim of the study is to discuss the idea of performative reading and present didactic conclusions with regard to the experience of literature in early reading-aloud interactions.
Źródło:
Filoteknos; 2020, 10; 162-184
2657-4810
Pojawia się w:
Filoteknos
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Neolithic vs. the Mesolithic in Southern Poland: Is Everything Known Yet?
Autorzy:
Nowak, Marek
Zając, Mirosław
Zakrzeńska, Justyna
Powiązania:
https://bibliotekanauki.pl/articles/1774301.pdf
Data publikacji:
2021-06-24
Wydawca:
Uniwersytet Warszawski. Wydawnictwa Uniwersytetu Warszawskiego
Tematy:
southern Poland
Late Mesolithic
para-Neolithic
Neolithic
cultural interactions
Opis:
According to a common belief, southern Poland was a typical area of Early Neolithic settlements which was rarely exploited and even ignored by Mesolithic communities. However, the prehistoric reality was more complex. Indeed, the zones largely omitted by the hunter-gatherers were fertile loess uplands and foothills settled by the first Neolithic farmers (Linear Band Pottery culture) in the third quarter of the 6th millennium BC. However, such ecological zones are by no means the only or even predominant zones within the territory in question. Areas with other ecological conditions, mainly those close to the Polish Lowland, yielded surprisingly numerous remains of Mesolithic settlements, including late Mesolithic ones. Radiocarbon data makes it clear that the Late Mesolithic communities coexisted with their Neolithic counterparts. However, the temporal dimension of this coexistence remains a debatable and controversial issue. Nevertheless, it is highly probable that the late hunter-gatherers would use ‘their own’ pottery also in southern Poland. Similarly to many other European regions, the anthropological and historical interpretations that describe and explain the interactions between early farmers and late hunter-gatherers in southern Poland (as well as archaeologically discernible transformations within the latter group) are difficult to construct. It is even more difficult to assess the role played by hunter-gatherers in the neolithisation of this territory. This paper presents and analyses the relevant chronological, chorological, settlement, and typological data. As a result, the hypothesis that the hunter-gatherer communities were but ‘passive’ witnesses to the first neolithisation and functioned independently at least throughout the entire Neolithic period was considered most probable.
Źródło:
Światowit; 2020, 59; 47-77
0082-044X
Pojawia się w:
Światowit
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Study of Interactions Between Individual Phenolics of Aronia with Barley Beta-Glucan
Autorzy:
Jakobek, Lidija
Matić, Petra
Ištuk, Jozo
Barron, Andrew R.
Powiązania:
https://bibliotekanauki.pl/articles/1363268.pdf
Data publikacji:
2021-05-11
Wydawca:
Instytut Rozrodu Zwierząt i Badań Żywności Polskiej Akademii Nauk w Olsztynie
Tematy:
adsorption isotherms
adsorption capacity
non-linear models
chokeberry
interactions
Opis:
Beneficial effects of aronia phenolics are determined by their interactions with dietary fibers, such as beta-glucan. The aim of this research was to study interactions between aronia phenolics and beta-glucan by investigating the adsorption process. Phenolic compounds were extracted from aronia, analyzed using high-performance liquid chromatography, and adsorbed onto beta-glucan at pH 1.5. The adsorption data were modeled by using Langmuir, Dubinin-Radushkevich, and Hill isotherms with a novel non-linear regression developed especially for adsorption isotherms. Aronia phenolics adsorbed onto beta-glucan in amounts 31-250 mg/g (individual anthocyanins), 44-123 mg/g (individual flavonols), and 51 mg/g (neochlorogenic acid). The correlation between adsorption capacities and phenolic content was high (r2=0.94), which suggested that the adsorption might be concentration dependent. Modeling with a novel non-linear regression allowed more precise determination of adsorption isotherm parameters. Furthermore, there was a correlation between maximum adsorption capacities predicted by models and measured adsorption capacities (r2 0.76, 0.81, and 0.34 for Langmuir, Dubinin-Radushevich, Hill isotherms, respectively). The suggested bonds involved in interactions are non-covalent bonds (H bonds, Van der Waals forces). Principal component analysis showed that anthocyanins, flavonols, and phenolic acids could differently behave in the adsorption process, which could be due to differences in the chemical structures (ionic nature of anthocyanins, nonionic nature of flavonols and phenolic acids at low pH). In conclusion, aronia phenolics interacted with beta-glucan by adsorbing onto its surface, and the novel modeling developed by our team was helpful in the interpretation of this process. Interactions should be further studied due to their importance for the beneficial effects of aronia.
Źródło:
Polish Journal of Food and Nutrition Sciences; 2021, 71, 2; 187-196
1230-0322
2083-6007
Pojawia się w:
Polish Journal of Food and Nutrition Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Using additive main effect and multiplicative interaction model for exploration of yield stability in some lentil (Lens culinaris Medik.) genotypes
Autorzy:
Sabaghnia, Naser
Karimizadeh, Rahmatollah
Mohammadi, Mohtasham
Powiązania:
https://bibliotekanauki.pl/articles/2199720.pdf
Data publikacji:
2012-12-20
Wydawca:
Instytut Hodowli i Aklimatyzacji Roślin
Tematy:
adaptation
AMMI stability parameters
genotype by environment (GE) interactions
Opis:
The additive main effect and multiplicative interaction (AMMI) analysis has been indicated to be effective in interpreting complex genotype by environment (GE) interactions of lentil (Lens culinaris Medik.) multi- environmental trials. Eighteen improved lentil genotypes were grown in 12 semiarid environments in Iran from 2007 to 2009. Complex GE interactions are difficult to understand with ordinary analysis of variance (ANOVA) or conventional stability methods. Combined analysis of variance indicated the genotype by loca- tion interaction (GL) and three way interactions (GYL) were highly significant. FGH1 and FGH2 tests indicated the five  significant  components; FRatio  showed  three significant  components  and F-Gollob detected  seven significant components. The RMSPD (root mean square predicted difference) values of validation procedure indicated seven significant components. Using five components in AMMI  stability parameters (EVFI, SIP- CFI, AMGEFI and DFI) indicated that genotypes G5 and G6 were the most stable genotypes while consider- ing three components in of AMMI stability parameters (EVFII, SIPCFII, AMGEFII and DFII) showed that genotypes G8 and G18 were the most stable genotypes. Also genotypes G2, G5 and G18 were the most stable genotypes according to AMMI stability parameters which calculated from seven components  (EVFIII, SIP- CFIII, AMGEFIII and DFIII). Among these stable genotypes, only genotypes G2 (1365.63 kg × ha-1), G11 (1374.13 kg × ha-1) and G12 (1334.73 kg × ha-1) had high mean yield and so could be regarded as the most favorable genotype. These genotypes are therefore recommended for release as commercial cultivars
Źródło:
Plant Breeding and Seed Science; 2012, 67; 45-60
1429-3862
2083-599X
Pojawia się w:
Plant Breeding and Seed Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Spin-coated chitosan on copolyester substrates
Autorzy:
Niemczyk, Agata
Kaczorowski, Paweł
El Fray, Mirosława
Powiązania:
https://bibliotekanauki.pl/articles/1034958.pdf
Data publikacji:
2015
Wydawca:
Sieć Badawcza Łukasiewicz - Polskie Towarzystwo Chitynowe
Tematy:
chitosan coating
interfacial interactions
polyester substrate
spin-coating process
Opis:
In this work, uniform thin chitosan coatings were spin coated onto copolyester substrate. The use of high concentration acetic acid (50 wt.%) as the chitosan solvent increased the protonation of chitosan amino groups, allowing for greater interactions between the solution and the surface of the substrate. Further, surface oxidation was used to incorporate additional functional groups in the copolyester surface, facilitating solution/substrate interactions. The interfacial interactions between the chitosan solution and copolyester substrate were evaluated by the contact angle measurements.
Źródło:
Progress on Chemistry and Application of Chitin and its Derivatives; 2015, 20; 236-245
1896-5644
Pojawia się w:
Progress on Chemistry and Application of Chitin and its Derivatives
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Structural biology of the influenza virus fusion peptide
Autorzy:
Worch, Remigiusz
Powiązania:
https://bibliotekanauki.pl/articles/1039239.pdf
Data publikacji:
2014
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
influenza virus
viral entry
membrane fusion
fusion peptide
peptide-lipid interactions
Opis:
The release of influenza RNA inside the host cell occurs through the fusion of two membranes, the viral envelope and that of the cellular endosome. The fusion is mediated by the influenza hemagglutinin protein (HA), in particular by the fusion peptide (HAfp) located in the N-terminal fragment of HA2 subunit. This protein fragment anchors in the internal endosomal membrane, whereas the C-terminal HA2 part comprises a transmembrane domain (TMD) embedded in the viral envelope. A drop of pH in the endosome acts as the main trigger for HA2 large conformational change that leads to anchoring of the fusion peptide, close contact of the membranes and the subsequent fusion. Throughout the years the major research effort was focused on a 20-aminoacid fragment (HAfp1-20), shown by NMR to adopt a 'boomerang'-like structure. However, recent studies showed that extending HAfp1-20 by three highly conserved residues W21-Y22-G23 leads to formation of a unique, tight helical hairpin structure. This review summarizes recently discovered structural aspects of influenza fusion peptides and their relations with the membrane fusion mechanism.
Źródło:
Acta Biochimica Polonica; 2014, 61, 3; 421-426
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of temperature on thermo-physical properties of pyrazolo quinazoline derivatives by ultrasonic studies
Autorzy:
Baluja, Shipra
Ramavat, Paras
Nandha, Kajal
Powiązania:
https://bibliotekanauki.pl/articles/1192659.pdf
Data publikacji:
2016
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
pyrazolo quinazoline derivatives
Acoustical parameter
Molecular interactions
Density
apparent molar compressibility
Opis:
Density (ρ), Sound velocity (U) and viscosity (ɳ) of pure solvent N,N-dimethylformamide (DMF) and solutions of pyrazolo quinazoline derivatives in DMF were taken at different concentration range and at different temperatures by using Antone paar. From these experimental data, some acoustical parameters such as adiabatic compressibility (κs), intermolecular free length (Lf), solvation number (Sn), apparent molar compressibility (fk), apparent molar volume (fv), internal pressure (π) etc., have been determined and correlated with the concentration (C).With concentration and temperatures, Linear or non-linear increases or decreases of acoustical parameters shows the existence of strong molecular interactions between solute and solvent. The results are interpreted in terms of solute-solute and solute-solvent interactions to understand the behavior of synthesized compounds in solutions.
Źródło:
World Scientific News; 2016, 47, 2; 89-111
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of the substitution of Ti for Y on structural properties and hyperfine interactions in Y1-xTixFe2 compounds
Autorzy:
Surowiec, Z.
Sarzyński, J.
Budzyński, M.
Wiertel, M.
Powiązania:
https://bibliotekanauki.pl/articles/971534.pdf
Data publikacji:
2004
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
hyperfine interactions
Mössbauer effect
quasibinary Laves phase
Y1 xTixFe2
Opis:
Abstract Room temperature 57Fe Mössbauer spectroscopy and X-ray diffraction measurements are reported for a series of Y1 xTixFe2 polycrystalline samples. Our research shows that except for x = 0 and x = 1, the samples are a mixture of two C15 and C14 pseudobinary Laves phases. Some Ti atoms occupy the crystallographic positions 8a characteristic of the Y atoms in the cubic C15 structure while the rest of them form the hexagonal C14 phase. However, the lattice constant dependencies on concentration x suggest the occurrence of Y atoms in the positions 4f characteristic of Ti atoms in the hexagonal C14 structure. The partial substitution of Ti atoms for Y atoms is responsible for the HMF changes in the cubic phase. Contrary to the situation taking place in the Zr1 xTixFe2 compounds, magnetic arrangement in the pseudobinary hexagonal phases is not observed at room temperature.
Źródło:
Nukleonika; 2004, 49,suppl.3; 17-21
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effects of loose kernel smut caused by Sporisorium cruentum onrhizomes of Sorghum halepense
Autorzy:
Astiz Gassó, Marta Monica
Lovisolo, Marcelo
Perelló, Analia
Powiązania:
https://bibliotekanauki.pl/articles/961639.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
biocontrol
host-pathogen interactions
johnson grass
kernel smut
smut
systemic diseases
Opis:
Th e eff ect of loose kernel smut fungus Sporisorium cruentum on Sorghum halepense (Johnson grass) was investigated in vitro and in greenhouse experiments. Smut infection induced a decrease in the dry matter of rhizomes and aerial vegetative parts of the plants evaluated. Moreover, the diseased plants showed a lower height than controls. The infection resulted in multiple smutted buds that caused small panicles infected with the fungus. In addition, changes were observed in the structural morphology of the host. Leaf tissue sections showed hyphae degrading chloroplasts and vascular bundles colonized by the fungus. Subsequently, cells collapsed and widespread necrosis was observed as a symptom of the disease. Th e pathogen did not colonize the gynoecium of Sorghum plants until the tassel was fully developed. The sporulation process of the fungus led to a total disintegration of anthers and tissues. When panicles were inspected before emergence, fungal hyphae were observed on floral primord. Histological sections of panicles showed fungal hyphae located in the parenchyma tissue and the nodal area. Infection occurred in the floral primordium before the tassel had fully developed and emerged from the flag leaf. Grains were replaced by sori surrounded by a thin membrane that usually was broken before or after the emergence of the panicle. The results, together with the significant decrease of the dry matter of rhizomes and seeds of S. halepense, suggest that S. cruentum could be considered as a potential biocontrol agent in the integrated management of this weed.
Źródło:
Journal of Plant Protection Research; 2017, 57, 1
1427-4345
Pojawia się w:
Journal of Plant Protection Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Epiphytic bacteria on lettuce affect the feeding behavior of an invasive pest slug
Epifityczne bakterie na liściach sałaty modyfikują zachowania pokarmowe inwazyjnego ślimaka z rodziny ślinikowatych
Autorzy:
Peters, Birte
Türke, Manfred
Junker, Robert R.
Powiązania:
https://bibliotekanauki.pl/articles/1631357.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
Arion vulgaris
dual choice experiment
herbivory
microorganisms
plant–bacteria–animal interactions
Opis:
Plant–animal interactions are not isolated pairwise relationships but are always accompanied by diverse assemblages of microbes. Additional to direct effects of microorganisms on their hosts, recent investigations demonstrated that bacteria associated with plants can modify the behavior of organisms of higher trophic levels. However, in the context of herbivory, functions of non-phytopathogenic bacteria colonizing leaf surfaces remain understudied. This study showed that naturally occurring epiphytic bacteria affect the feeding behavior of a generalist herbivore. Epiphytic bacteria isolated from leaves of Lactuca sativa var. capitata were screened for their potential to influence feeding choices of the slug Arion vulgaris. Cultivatedbacteria were inoculated in artificial food substrates or on sterile leaves of gnotobiotic lettuce plants and were offered to slugs in different behavioral bioassays. A large proportion of bacterial strains tested induced behavioral alterations in the feeding choices of slugs. Behavioral responses of slugs were further modified by antibiotic treatment of slugs prior to choice tests indicating that both bacteria associated with plants and animals affect plant–animal interactions. Our results emphasize the important role of bacteria in plant–animal interactions and suggest a prominent role of bacteria in herbivory in natural, horticultural, and agricultural systems.
Ekologicznych interakcji roślin i zwierząt nie można rozpatrywać wyłącznie jako odizolowanych relacji dwóch gatunków, ich tłem bowiem są rozliczne zespoły drobnoustrojów. Współczesne badania wskazują, że poza bezpośrednim wpływem na gospodarza, mikroorganizmy związane z roślinami mogą modyfikować zachowanie organizmów z wyższych poziomów troficznych. Niestety, w kontekście roślinożerności ekologiczna funkcja niepatogennych bakterii kolonizujących liście pozostaje niezbadana. Nasze badania wykazały, że naturalnie występujące epifityczne bakterie wpływają na zachowania pokarmowe niewyspecjalizowanego roślinożercy. Aby to osiągnąć zastosowaliśmy epifityczne bakterie wyizolowane z liści Lactuca sativa var. capitata i określiliśmy ich wpływ na wybory pokarmowe ślinika Arion vulgaris. Sztuczne substraty pokarmowe oraz gnotobiotyczne liście sałaty zaszczepione koloniami bakteryjnymi zaoferowano ślimakom w różnych testach behawioralnych. Znaczący odsetek zastosowanych szczepów bakteryjnych spowodował zmianę trybu żerowania zwierząt eksperymentalnych. Odpowiedź ta mogła być dalej modyfikowana antybiotykami podawanymi zwierzętom przed testami behawioralnymi, co wskazuje, że zarówno bakterie występujące na roślinach jak i na zwierzętach mogą istotnie wpływać na interakcje roślina–zwierzę. Nasze badania wskazują na istotną rolę bakterii w modyfikowaniu relacji roślin i zwierząt oraz sugerują znaczący wpływ tych mikroorganizmów na zjawisko roślinożerności zarówno w systemach naturalnych, jak i w kontekście upraw ogrodniczych czy rolnych.
Źródło:
Acta Agrobotanica; 2017, 70, 1
0065-0951
2300-357X
Pojawia się w:
Acta Agrobotanica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Introduction to n-body simulation of magnetorheological elastomer (MRE) microstructure forming process
Autorzy:
Miedzińska, D.
Łazowski, J.
Boczkowska, A.
Powiązania:
https://bibliotekanauki.pl/articles/246185.pdf
Data publikacji:
2010
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
magnetorheological elastomer
n-body problem
magnetic interactions
smart materials
forming process
Opis:
Magnetorheological elastomers (MREs) are the materials with rheological properties which can be changed in a continuous way, rapidly and reversibly by the applied magnetic field. They are the solid analogues of magnetorheological fluids (MRFs), consisting of magnetically permeable particles (such as iron) added to a viscoelastic polymeric material prior to crosslinking. In the paper the introduction to the n-body simulation of the MRE microstructure forming process is presented. First, the basics of the n-body problem are presented as the planar three-body problem. It is well known, that the planar three-body problem is the problem describing the motion of three point masses in the plane under their mutual Newtonian gravitation. In the paper it is shown how that problem will be applied to the simulation of the phenomena that appeared when the external magnetic field is applied to the chaotically mixed iron particles in the liquid elastomer. Also the physical model of the interactions occurred in such structures are described. The assumptions shown in the paper will be then used for the development of the computer program which calculates the interactions between iron dipoles and describes the movement of the particles in the liquid elastomer under the magnetic field.
Źródło:
Journal of KONES; 2010, 17, 1; 249-253
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of Sc substitution for Y on structural properties and hyperfine interactions in Y1-xScxFe2 compounds
Autorzy:
Budzyński, M.
Sarzyński, J.
Wiertel, M.
Surowiec, Z.
Powiązania:
https://bibliotekanauki.pl/articles/148816.pdf
Data publikacji:
2003
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
hyperfine interactions
Mössbauer effect
quasibinary Laves phase
Y1-xScxFe2
Opis:
Measurements of X-ray diffraction and Mössbauer effect were made on a series of Y1-xScxFe2 polycrystalline samples (x = 0.0, 0.2, 0.5, 0.7, 0.8, 1.0). It was found that the system has the cubic MgCu2 structure except for x = 1.0 where hexagonal MgZn2 structure type is stable. The lattice constant decreases with increasing x. The results of Mössbauer effect study at room temperature show that the easy axes of magnetization remain in the <111> direction for the cubic samples and <100> for the hexagonal one. Curie temperatures TC were determined from temperature dependence of the hyperfine magnetic fields. The concentration dependence of the hyperfine fields and TC show similar trends, exhibiting a maximum at x = 0.8. The magnetic and structural behaviour show that, in spite of being isoelectronic, the substitution of Y by Sc induces clear changes in the structural and magnetic properties of the compounds under investigation.
Źródło:
Nukleonika; 2003, 48,suppl.1; 79-83
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Atomic short-range order in mechanically synthesized iron based Fe-Zn alloys studied by 57Fe Mössbauer spectroscopy
Autorzy:
Konieczny, R.
Idczak, R.
Powiązania:
https://bibliotekanauki.pl/articles/148820.pdf
Data publikacji:
2015
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
hyperfine interactions
mechanical alloying
Mössbauer spectroscopy
nanocrystalline materials
short-range order
Opis:
Mechanical alloying method was applied to prepare nanocrystalline iron-based Fe1-xZnx solid solutions with x in the range 0.01 ≤ x ≤ 0.05. The structural properties of the materials were investigated with the Mössbauer spectroscopy by measuring the room temperature spectra of 57Fe for as-obtained and annealed samples. The spectra were analyzed in terms of parameters of their components related to unlike surroundings of the iron probes, determined by different numbers of zinc atoms existing in the neighborhood of iron atoms. The obtained results gave clear evidence that after annealing process, the distribution of impurity atoms in the fi rst coordination spheres of 57Fe nuclei is not random and it cannot be described by binomial distribution. The estimated, positive values of the short-range order parameters suggest clustering tendencies of Zn atoms in the Fe-Zn alloys with low zinc concentration. The results were compared with corresponding data derived from Calphad calculation and resulting from the cellular atomic model of alloys by Miedema.
Źródło:
Nukleonika; 2015, 60, 1; 69-73
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
INTERAKCJE SPOŁECZNE W PROCESIE SOCJALIZACJI
SOCIAL INTERACTIONS IN SOCIALIZATION PROCESS
Autorzy:
Skuza, Aneta
Powiązania:
https://bibliotekanauki.pl/articles/550037.pdf
Data publikacji:
2012
Wydawca:
Uniwersytet Kardynała Stefana Wyszyńskiego w Warszawie
Tematy:
interakcje, proces socjalizacji, syndrom nie przystosowania
społecznego
interactions, socialization, social maladjustment
Opis:
Człowiek rodzi się jako istota biologiczna, dopiero pod wpływem kultury określonego społeczeństwa staje się istotą społeczną. To właśnie kultura stanowi dla człowieka „coś” czego musi się „nauczyć” aby funkcjonować w określonym otoczeniu społecznym, a tym procesem, który „wprowadza” jednostkę w życie społeczne jest właśnie proces socjalizacji. Zatem jest to proces stawania się takim, jakim chce mieć nas nasze otoczenie społeczne. Nie mniej, treści społeczne, jakie przyswajamy sobie w toku procesu socjalizacji rzadko zapewniają funkcjonowanie, które byłoby całkowicie zgodne z wymaganiami społeczeństwa. Lecz samo społeczeństwo ustala też pewien stopień rozbieżności, którego przekraczanie uważa za mniej lub bardziej groźny objaw nieprzystosowania społecznego i zaburzenie procesu socjalizacji.
The man is born as the biological being, only under the influence of the culture of the determined society is becoming a social being. The culture just constitutes it for the man “something” of what they must “to teach” in order to function in determined social environment, but it with process, which “is leading” individual there is exactly a process of the socialization into the social life. And so it is process of happening so, with which our social environment wants to have us. Not less, social contents we are assimilating which in the course of the process rarely provide functioning which would match requirements of the society entirely for the socialization. But very society is also establishing certain degree of the divergence which crossing regards as the more or less dangerous manifestation of the social maladjustment and disturbing the process of the socialization.
Źródło:
Forum Pedagogiczne; 2012, 1; 225-257
2083-6325
Pojawia się w:
Forum Pedagogiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A situation-based multi-agent architecture for handling misunderstandings in interactions
Autorzy:
Pham, T. P.
Rabah, M.
Estraillier, P.
Powiązania:
https://bibliotekanauki.pl/articles/330864.pdf
Data publikacji:
2015
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
interactive adaptive system
misunderstandings in interactions
situation structuring
consistency management
Opis:
During interactions, system actors may face up misunderstandings when their local states contain inconsistent data about the same fact. Misunderstandings in interactions are likely to reduce interactivity performances (deviation or deadlock) or even affect overall system behavior. In this paper, we characterize misunderstandings in interactions between system actors (that may be human users or system agents) in interactive adaptive systems. To deal with such misunderstandings and ensure state consistency, we present an agent-based architecture and a scenario structuring approach. The system includes several agents devoted to scenario unfolding, plot adaptation and consistency management. Scenario structuring is based on the notion of a situation that is an elementary building block dividing the interactions between systems’ actors into contextual scenes. This pattern supports not only scenario execution but consistency management as well. In order to organize and control interactions, the situation contextualizes interactions and activity of the system’s actors. It also includes prevention and tolerance agent-based mechanisms to deal with the misunderstandings and their causes. We validate our consistency management mechanisms using Uppaal simulation and provide some experimental results to show the effectiveness of our approach on an online distance learning case study.
Źródło:
International Journal of Applied Mathematics and Computer Science; 2015, 25, 3; 439-454
1641-876X
2083-8492
Pojawia się w:
International Journal of Applied Mathematics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Three-drug combination of lacosamide, phenobarbital and valproate exerts additive interaction in the tonic-clonic seizure model in mice
Autorzy:
Kondrat-Wrobel, M.
Marzeda, P.
Bojar, H.
Wroblewska-Luczka, P.
Kozinska, J.
Jankiewicz, M.
Kominek, M.
Luszczki, J.J.
Powiązania:
https://bibliotekanauki.pl/articles/2097824.pdf
Data publikacji:
2020
Wydawca:
Instytut Medycyny Wsi
Tematy:
valproate
drug interactions
phenobarbital
isobolographic analysis
lacosamide
Tonic-clonic seizures
Opis:
Introduction. Triple-therapy with antiepileptic drugs (AEDs) is usually prescribed for epilepsy patients, whose seizures are not fully controlled with standard medications. Although 25 various AEDs are currently licensed for treating epilepsy, no algorithms allowing for the proper combination of AEDs are available. Objective. The aim of the study is to isobolographically assess the type of interaction among three AEDs (lacosamide [LCM], phenobarbital [PB] and valproate [VPA]), in the model of tonic-clonic seizures in mice. Materials and Method. The electrically-evoked (25 mA, 500 V, 50 Hz, 0.2 s of stimulus duration) tonic-clonic seizures in male albino Swiss mice allowed determination of the anticonvulsant action of the three-drug mixture of LCM, PB and VPA combined in a dose ratio of 1:1:1 by means of type I isobolographic analysis of interaction. Results. The experimentally-determined ED50 exp value for the three-drug mixture was 112.04 mg/kg and did not differ from the theoretically calculated ED50 add value, which was 112.36 mg/kg. Lack of statistical significance confirmed that the mixture of LCM, PB and VPA in a dose-ratio of 1:1:1 exerted additive interaction in the mouse tonic-clonic seizure model. Conclusions. Although the three-drug combination of LCM, PB and VPA produced additive interaction in the mouse tonic-clonic seizure model, the three-drug combination could be recommended for epilepsy patients whose seizures are refractory to the standard medication.
Źródło:
Journal of Pre-Clinical and Clinical Research; 2020, 14, 3; 102-106
1898-2395
Pojawia się w:
Journal of Pre-Clinical and Clinical Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modelling drug-receptor interactions in an average binding site for NK2
Autorzy:
Alagona, G.
Ghio, C.
Monti, S.
Powiązania:
https://bibliotekanauki.pl/articles/1953954.pdf
Data publikacji:
1998
Wydawca:
Politechnika Gdańska
Tematy:
receptor modelling
docking
non covalent interactions
molecular mechanics
molecular dynamics
substituent effects
Opis:
A tentative procedure applied to the search for a new antagonist of neurokinin A (NKA) is presented. In parallel a tentative 3-D model of the NK2 receptor was created, using bacteriorhodopsin (BRD) as a template. The residue substitutions were performed in BRD to obtain the sequence for NK2R_H and the seven a-helical segments were optimized forcing the a-helical backbone to match the corresponding aligned parts of BRD, while the arrangements of the side chains were model built based on available site-directed mutagenesis studies. Constrained MM and molecular dynamics simulations were carried out H-bonding a low energy conformer of the known drugs to residues in the receptor site, allowing both the receptor site and drugs to relax. The Connolly surface for each ligand allowed to determine an "average" binding site in which all the low energy conformers of known and prospective drugs were docked and classified according to a statistical index. The whole procedure was repeated exploiting the lately published structure of an actual G protein coupled receptor as a better template, thus producing a cavity in the binding site to directly dock the drugs. Corollary validations of the force fields used are also mentioned. In addition intra- and intermolecular interactions suitable to produce more active drugs were evaluated.
Źródło:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 1998, 2, 4; 563-581
1428-6394
Pojawia się w:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-100 z 270

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