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Wyświetlanie 1-15 z 18
Tytuł:
Contribution of the Polish scientific community in solving new practical problems in hydrogeology
Autorzy:
Herbich, P
Kazimierski, B.
Krogulec, E.
Małecki, J. J.
Michalak, J.
Powiązania:
https://bibliotekanauki.pl/articles/2066340.pdf
Data publikacji:
2010
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
hydrogeologiczne informacje geograficzne
zasoby wód podziemnych
ochrona wód podziemnych
upowszechnianie wiedzy hydrogeologicznej
hydrogeological geo-information
groundwater monitoring
groundwater resources
protection of groundwater
dissemination of hydrogeological knowledge
Opis:
Geology, and especially hydrogeology is a scientific, and at the same time, a practical discipline that are closely related to each other. Academics do support practitioners by developing methodological guidelines for all practical aspects of their work. Among their activities are: organisation of databases, which are mostly available via the internet; development of geological and hydrogeological cartography, which is a synthesis of all information regarding geological and hydrogeological environment; undertaking groundwater monitoring programmes and interpretations of their results, which allows to diagnose and to forecast groundwater status; undertaking investigations regarding protection of groundwater as well as methodological support for hydrogeological practitioners by organisation of specialised trainings, provision of consultancy, expert judgements and dissemination of knowledge.
Źródło:
Przegląd Geologiczny; 2010, 58, 9/1; 803-815
0033-2151
Pojawia się w:
Przegląd Geologiczny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Non-stationary heat transfer in a hollow cylinder with functionally graded material properties
Niestacjonarny przepływ ciepła w wydrążonym cylindrze wykonanym z materiału o funkcyjnej gradacji własności
Autorzy:
Ostrowski, P.
Michalak, B.
Powiązania:
https://bibliotekanauki.pl/articles/281045.pdf
Data publikacji:
2011
Wydawca:
Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:
heat transfer
functionally graded material
tolerance averaging approach
Opis:
The unidirectional non-stationary heat conduction in a two-phase hollow cylinder is considered. The conductor is made of two-phase stratified composites and has smooth gradation of effective properties in the radial direction. Therefore, we deal here with a special case of functionally graded materials, FGM. The formulation of mathematical model of the conductor is based on a tolerance averaging approach (TAA). Application to the non-stationary heat conduction and a comparison of the tolerance model with the asymptotic one is shown. The effect of geometry and material properties of the conductor on the temperature field is examined.
W pracy rozważano niestacjonarne przewodzenia ciepła w dwuskładnikowym wydrążonym cylindrze. Przewodnik jest wykonany z dwuskładnikowego warstwowego kompozytu mającego łagodną zmienność efektywnych własności w kierunku promieniowym. Stąd mamy tutaj do czynienia ze specjalnym przypadkiem materiału o funkcyjnej gradacji własności (ang. functionally graded materiale, FGM). Zbudowanie uśrednionego modelu matematycznego rozpatrywanego przewodnika jest oparte na technice tolerancyjnej aproksymacji. W pracy pokazano zastosowanie otrzymanego modelu tolerancyjnego i porównanie wyników z wynikami dla modelu asymptotycznego w przypadku niestacjonarnego przewodzenia ciepła. Zbadano wpływ zmienności geometrii i własności materiałowych przewodnika na pole tempertatury.
Źródło:
Journal of Theoretical and Applied Mechanics; 2011, 49, 2; 385-397
1429-2955
Pojawia się w:
Journal of Theoretical and Applied Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Preparation and characterization of ultra-fine silver bromide suspension
Autorzy:
Król-Gracz, A.
Michalak, E.
Nowak, P.
Dyonizy, A.
Powiązania:
https://bibliotekanauki.pl/articles/115949.pdf
Data publikacji:
2011
Wydawca:
Fundacja na Rzecz Młodych Naukowców
Tematy:
nanoparticles
silver bromide
synthesis method
gelatine
Opis:
This paper present the results of studies on ultra fine-crystalline silver bromide suspensions, which were stabilized by gelatin and excess of bromide ions. Relation between dosing rate of reactants to size of obtained silver bromide crystals was investigated. Granulometric properties obtained nanocrystals were studied by turbidity method and by technique of Dynamic Light Scattering (DLS). Additionally, a photomicrograph of suspension using Scanning Electron Microscopy (SEM) was performed.
Źródło:
Challenges of Modern Technology; 2011, 2, 2; 38-42
2082-2863
2353-4419
Pojawia się w:
Challenges of Modern Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Hydroquinone Synthesis of Silver Nanoparticles from Silver Bromide Suspensions
Autorzy:
Król-Gracz, A.
Nowak, P.
Michalak, E.
Dyonizy, A.
Powiązania:
https://bibliotekanauki.pl/articles/1491287.pdf
Data publikacji:
2012-01
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
81.07.-Bc
61.46.Hk
Opis:
The results of research into the preparation of silver nanoparticles using photoreduction in the presence of hydroquinone as the reductant were discussed. Substrates for the synthesis of silver nanoparticles were ultrafine crystalline gelatine-stabilised aqueous suspensions of silver bromide. The influence of the reductant to substrate molar ratio and the medium's pH to the efficient production of silver nanoparticles were studied. The properties of resultant silver particles were examined using UV-Vis spectroscopy. Transmission electron microscopy was used for the photomicrography of silver nanoparticles suspensions.
Źródło:
Acta Physica Polonica A; 2012, 121, 1; 196-199
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Synthesis of Silver Halide Nanosols
Autorzy:
Michalak, E.
Nowak, P.
Król-Gracz, A.
Dyonizy, A.
Powiązania:
https://bibliotekanauki.pl/articles/1491302.pdf
Data publikacji:
2012-01
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
81.07.-b
Opis:
The aim of this work was to establish the average size of silver halide nanosols. The method applied was based on the optical turbidance measurements in real time of crystallization process. Dilute turbid suspensions of silver bromide, chloride and iodide stabilized by excess of halide ions and gelatin were measured over wavelength range from 450 nm to 600 nm. Experimental results were compared with the scattering theory of Rayleigh. Relation between dosing rate of reactants to dispersion system and size of obtained silver halide crystals was investigated. Interest in crystalline gelatine-stabilised aqueous suspensions of silver halide is due to their application as a substrate for the synthesis of silver nanoparticles.
Źródło:
Acta Physica Polonica A; 2012, 121, 1; 200-202
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The influence of age on a clinical presentation of Toxocara spp. infection in children
Autorzy:
Mazur-Melewska, K.
Miania, A.
Figlerowicz, M.
Kemnitz, P.
Sluzewski, W.
Michalak, M.
Powiązania:
https://bibliotekanauki.pl/articles/51466.pdf
Data publikacji:
2012
Wydawca:
Instytut Medycyny Wsi
Opis:
Toxocariasis is a helminthozoonosis due to the infestation of humans by roundworms, Toxocara spp. Actual informations indicate it the most common worm infection in many countries, typically connected with rural areas. The authors analyzed the documentation of 84 children with positive serology to this worm. An individual record was made and following data were restricted: anamnesis data, clinical symptoms, epidemiological data, eosinophils number, level of immunoglobulins G and E. The highest Toxocara spp. seropositivity frequency was found in the schoolchildren aged 7-10. The most frequent clinical findings in children infected Toxocara spp. were lymphadenopathy, hepatomegaly, arthralgia and arthritis. 15.5% of seropositive patients presented non-specific symptoms originating from the central nervous system: headaches, sleep and behavioural disorders, and hyperactivity. The mean eosinophilia in the peripheral blood was detected in the youngest children: 4,023 cell/μl, which is 15.55 times more than the limit value. Hyperimmunoglobulinemia E was detected in all age groups, and the youngest children presented a serum concentration of IgE that was 16.47 times higher than the limit value. Conclusions: 1. Toxocara spp. infection is detected in children at every age, but the most specific age group are schoolchildren, representing 38% of positive individuals. 2. The clinical spectrum of toxocariasis reflects various manifestations depending on the internal organs infected by the migrating worms and the intensity of infection. 3. Eosinophilia seems to be a good marker of infection in young children who have a more symptomatic course of the disease. 4. Hyperimmunoglobulinemia IgE can be the important element which distinguishes between current and past Toxocara infection, but its meaning is not connected with the age of infected children
Źródło:
Annals of Agricultural and Environmental Medicine; 2012, 19, 2
1232-1966
Pojawia się w:
Annals of Agricultural and Environmental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Does home-based vision therapy affect symptoms in young adults with convergence insufficiency?
Autorzy:
Nawrot, P.
Michalak, K. P.
Przekoracka-Krawczyk, A.
Powiązania:
https://bibliotekanauki.pl/articles/173398.pdf
Data publikacji:
2013
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
asthenopia
convergence insufficiency
exophoria
exotropia
eyestrain
symptom survey
vision therapy
Opis:
The purpose of this study was to investigate the effectiveness of extended home-based vision therapy as a treatment for symptomatic convergence insufficiency (CI) in young exophoric adults. Twenty-four adults with symptomatic exophoria at near with convergence insufficiency were divided into an experimental and a control group. The experimental group received 24 weeks of vision training, while the control group received no therapy. The three major outcome measures were the scores on the convergence insufficiency symptom survey V15 (CISS-V15), the near point of convergence and the positive fusional vergence at near. Only subjects from the experimental group demonstrated statistically and clinically significant changes in the CISS-V15 score (improvement of 20 points), near point of convergence (improvement of 5.5 cm) and positive fusional vergence at near (improvement of 15 Δ). No significant changes of either symptoms or signs were evident for the control group. The results presented in this study showed that extending the time and number of home based therapy techniques might be an effective treatment modality in adult subjects with CI. This therapy might be an alternative way for treatment of symptomatic exophoric CI subjects, who cannot attend office sessions.
Źródło:
Optica Applicata; 2013, 43, 3; 551-566
0078-5466
1899-7015
Pojawia się w:
Optica Applicata
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Unraveling protein-protein interactions using fluorescence imaging techniques
Autorzy:
Michalak, M.
Wojtaszek, P.
Powiązania:
https://bibliotekanauki.pl/articles/79933.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
conference
protein-protein interaction
imaging technique
fluorescence
physiological process
living cell
Źródło:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2013, 94, 3
0860-7796
Pojawia się w:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Implementation of a Value for Generalized Characteristic Function Games
Autorzy:
Michalak, T. P.
Rahwan, T.
Powiązania:
https://bibliotekanauki.pl/articles/91521.pdf
Data publikacji:
2014
Wydawca:
Warszawska Wyższa Szkoła Informatyki
Tematy:
generalized characteristic function games
Shapley value implementation
Opis:
Generalized characteristic function games are a variation of characteristic function games, in which the value of a coalition depends not only on the identities of its members, but also on the order in which the coalition is formed. This class of games is a useful abstraction for a number of realistic settings and economic situations, such as modeling relationships in social networks. To date, two main extensions of the Shapley value have been proposed for generalized characteristic function games: the Nowak-Radzik value and the S´anchez-Berganti˜nos value. In this context, the present article studies generalized characteristic function games from the point of view of implementation and computation. Specifically, the article presents a non-cooperative mechanism that implements the Nowak-Radzik value in Subgame-Perfect Nash Equilibria in expectation.
Źródło:
Zeszyty Naukowe Warszawskiej Wyższej Szkoły Informatyki; 2014, 8, 11; 7-27
1896-396X
2082-8349
Pojawia się w:
Zeszyty Naukowe Warszawskiej Wyższej Szkoły Informatyki
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The assessment of the risk of allergenicity of "Sabina" and "Debreceni Botermo" sour cherry cvs (Prunus cerasus L.) in a guinea pig model
Autorzy:
Jasinska-Stroschein, M.
Szczesniak, P.
Owczarek, J.
Rutkowski, K.P.
Markowski, J.
Rozpara, E.
Orszulak-Michalak, D.
Powiązania:
https://bibliotekanauki.pl/articles/2063.pdf
Data publikacji:
2014
Wydawca:
Instytut Ogrodnictwa
Tematy:
sour cherry
Prunus cerasus
Debreceni Botermo cultivar
Sabina cultivar
allergy
allergic reaction
integrated fruit production
lipid transfer protein
guinea pig
Źródło:
Journal of Horticultural Research; 2014, 22, 2
2300-5009
Pojawia się w:
Journal of Horticultural Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The rabbit brachial plexus as an experimental model – anatomy and surgical approach
Autorzy:
Reichert, P.
Rutowski, R.
Kielbowicz, Z.
Kuryszko, J.
Kielbowicz, M.
Michalak, L.
Bochenska, A.
Powiązania:
https://bibliotekanauki.pl/articles/2087962.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Opis:
The aim of our study was to analyze the anatomy and surgical approach of the rabbit brachial plexus. The research included 18 rabbits. The rabbit seems to be a good experimental model for spinal nerves injury, especially for the C5 and C6 segments. The anatomical structure of the rabbit’s brachial plexus is similar to the human brachial plexus. The structure of the rabbit C5 and C6 segments is analogous to the human structure. The spinal nerves of the C5 and C6 segments in the rabbit are wide and long enough for microsurgical procedures.
Źródło:
Polish Journal of Veterinary Sciences; 2014, 17, 2; 339-345
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Retrospective study of injury rates among children and adults in the Lublin Region of Poland
Autorzy:
Domzal-Drzewicka, R.
Saracen, A.
Rzaca, M.
Wegorowski, P.
Stanislawek, A.
Michalak, B.P.
Powiązania:
https://bibliotekanauki.pl/articles/51286.pdf
Data publikacji:
2016
Wydawca:
Instytut Medycyny Wsi
Źródło:
Annals of Agricultural and Environmental Medicine; 2016, 23, 2
1232-1966
Pojawia się w:
Annals of Agricultural and Environmental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Helmet-mounted display and cueing systems as pilot aids for aviation/maritime search and rescue missions
Autorzy:
Lewitowicz, J.
Szelmanowski, A.
Pazur, A.
Michalak, S.
Janik, P.
Powiązania:
https://bibliotekanauki.pl/articles/135533.pdf
Data publikacji:
2017
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
integrated avionics systems
helmet-mounted display systems
SAR/CSAR systems
SWPL1 “Cyklop” system
NSC1 “Orion” system
TOPLITE system
RSC-125G system
Opis:
The paper presents selected results of analytical and construction works executed at the Air Force Institute of Technology (AFIT) in the context of possibilities of supporting the actions of a helicopter crew, i.e., pilot-crew commander, pilot-operator of on-board systems, and on-board technician participating in aviation/maritime search and rescue missions. Such support is based on using the helmet-mounted display systems SWPL1 “Cyklop” and NSC1 “Orion” for information from the observation-targeting heads and verbal communication with the survivor. Selected imaging and verbal communication devices installed on aircraft operated by the Polish Armed Forces, which are used in aviation/maritime search and rescue actions, are discussed. Particular attention is drawn to the problems associated with the integrated avionics systems of helmet-mounted imaging of piloting-navigation parameters and the helmet-mounted imaging of information from the observation-targeting heads, i.e., the on-board radio direction finder system and emergency radio, which are part of the integrated communication system. Sample structural solutions for such systems and the possibilities of their application in search and rescue missions are presented.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2017, 52 (124); 112-119
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Transcranial direct current stimulation as a new method for changing the accommodative response of the eye
Autorzy:
Wendel, M.
Burdziński, G.
Michalak, K. P.
Przekoracka-Krawczyk, A.
Powiązania:
https://bibliotekanauki.pl/articles/173903.pdf
Data publikacji:
2017
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
transcranial direct current stimulation
tDCS
accommodative response
visual training
visual cortex
Opis:
The aim of the present study was to test if the exposure to transcranial direct current stimulation (tDCS) would change the excitability of the visual cortex and influence an accommodative response of the ocular lens. Twenty four subjects were divided into two groups: real-stimulation of the occipital cortex in which participants were exposed to real stimulation (1 mA for 12 min), and sham in which subjects were tested with placebo stimulation. The results showed that tDCS might indeed influence accommodative response. The strongest and most evident effect was observed when a 3.0 D accommodative stimulus was used: anodal tDCS increased but cathodal tDCS – decreased the accommodative response. The second finding was that the effect of stimulation was dependent on the examined eye. The right eye with slightly lower visual acuity and weaker accommodative response in pre-test, responded more strongly than the left eye. The short-time tDCS might modulate excitability of the neurons in visual cortex and eye sensitivity, reflected in the change of accommodative response. The tDCS method may be considered a technique that could reinforce conventional active visual training to improve accommodative functions.
Źródło:
Optica Applicata; 2017, 47, 4; 499-510
0078-5466
1899-7015
Pojawia się w:
Optica Applicata
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Study of the electrical characteristics and sheathing heat protection of the American mink (Neovison vison) hair coat
Badanie cech elektrycznych i ciepłochronności okrywy włosowej wizonów amerykańskich (Neovison vison)
Autorzy:
Cholewinska, P.
Michalak, M.
Waclawik, P.
Grabolus, D.
Powiązania:
https://bibliotekanauki.pl/articles/2650.pdf
Data publikacji:
2018
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Źródło:
Annals of Warsaw University of Life Sciences - SGGW. Animal Science; 2018, 57[3]
1898-8830
Pojawia się w:
Annals of Warsaw University of Life Sciences - SGGW. Animal Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 18

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