Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

Wyszukujesz frazę "6" wg kryterium: Wszystkie pola


Tytuł:
О понятии «текстовая норма» е коммуникативной стилистике текста
Autorzy:
6олотнова, Нина С.
Powiązania:
https://bibliotekanauki.pl/articles/1925875.pdf
Data publikacji:
2005
Wydawca:
Uniwersytet Opolski
Tematy:
communicative stylistics
textual norm
efficacious communication
Opis:
Communicative stylistics is a new field of modem functional stylistics and it is formed on the basis of other sciences, which study text as a form of communication and phenomenon of idiostyle. In contrast to linguistics oftext and linguistic poetics communicativestylistics studies text in respect to author and addressee's activity. Unlike pragmatics, psycholinguistics, psychopoetics, which are guided by the theory of speech activities, communicative stylistics concems linguistic-stylistic aspects of intercourse speech in theirtextual realization. And at the same time a research of structural and semantic text organization in the view of communicative effect is considered as analysis caused by some factors such as stylistic usage and author's idiostyle. Activities approach in the context ofcommunicative stylistics is connected with its examination as a fact ofinitial communicative author's activity and an object of secondary communicative reader's activity. The aim of communicative stylistics is to work up the problems of efficacy of author and addressee'stextual activity taking into account specific character of language person, field of intercourse, aim and tasks, genre and style peculiarities of text. In accord with anthropocentric approach to text idiostyle is considered as a dominant notion and it gets another communicative sense. This notion contains multifold demonstration of author's language person in the structure, semantics and pragmatics of text. The ąuestions of normalization in text activity are considered as the main problem of communicative stylistics. A new aspect of this problem is that it is connected with efficacy intercourse of author and reader. Taking into consideration bilateral character of communication (initial and secondary communicative activity which is connected with text formation and text perception and interpretation) textual norm is regarded as an important factor for dialogic intercourse of author and addressee, which shows a standard of textual activ ity for a certain sphere of communication. Textual nom1 is defined as follows: 1 ) it is firm rules of textual activity which are prevalent historically and accepted by a society; standard texts for a certain sphere of communication are fom1ed on the bas is of these rules; 2) it is a system of communicative- pragmatic, genre and style, composition and speech norms, which is proper for a certain type of text and it shows its communicative essence, linguistic character and extralinguistic orientation; 3) it is a harmonious organization of all structural elements of text in accord with the basie idea of author and direction of attention toward addressee.This notion of textual norm takes into account a complex of the following factors: 1) place of text in the structure of universal model of speech communication by Roman O. Jakobson; 2) levels of model of language person which is out of text according to the theoryof Yurij N. Karaulov; 3) communicative characteristics of speech which text must meet the requirements; 4) the main features and characteristics of text. ln spite of their stability textual nom1s are historically changed and varied depending on the type oftext (mainly itdepends on its genre and style peculiarities, sphere of communication, literary school which author follows) and author's intention and addressee's factor.
Źródło:
Stylistyka; 2005, 14; 87-102
1230-2287
2545-1669
Pojawia się w:
Stylistyka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Overexpression of cytochrome P450 CYP6B7 mediated pyrethroid resistance in Indian strains of the cotton bollworm, Helicoverpa armigera (Hübner)
Autorzy:
Abd El-Latif, A.O.
Kranthi, K.R.
Kranthi, S.
Sarwar, A.
Subrahmanyam, B.
Powiązania:
https://bibliotekanauki.pl/articles/65742.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Opis:
The role of cytochrome P450 monooxygenase in pyrethroid resistance was studied in different strains of the cotton bollworm, Helicoverpa armigera, from India. Filed collected strains of Nagpur and Delhi were compared to the laboratory reared population. The results showed a high resistance to deltamethrin, α-cypermethrin, and β-cyfluthrin. The results also showed that this resistance could be reduced by using piperonyl butoxide (PBO). The Nagpur and Delhi strains were found to have a 2.40 and 1.79 fold higher monooxygenase activity compared to a susceptible strain. A strong, positive correlation between monooxygenase activity and pyrethroid resistance was observed (r = 0.86 - 0.98). The relative expression of the housekeeping gene, EF-1α, and three P450 genes, was studied in the 5th instar larval midgut of the three strains. Out of the three P450 genes examined, expression of CYP6B7 mRNA was not detected in the midgut of the susceptible strain though it was highly expressed in the resistant strains. The midgut of the Nagpur strain had a 2.60 fold overexpression of CYP6B7 mRNA compared to the moderately resistant, Delhi strain. The mRNA of CYP4G8 and CYP6B2 were not overexpressed in either the Nagpur or Delhi strain. The results indicated that the elevated cytochrome P450 monooxygenase activity is associated with pyrethroid resistance in Indian strains of H. armigera, and CYP6B7 could be the P450 form responsible for pyrethroid resistance.
Źródło:
Journal of Plant Protection Research; 2014, 54, 3
1427-4345
Pojawia się w:
Journal of Plant Protection Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The effect of injection pressure and strategy in a Jaguar V6 diesel engine
Autorzy:
Abdullah, N. R.
Mamat, R.
Rounce, P.
Wyszynski, M. L.
Tsolakis, A.
Xu, H. M.
Tian, G.
Powiązania:
https://bibliotekanauki.pl/articles/242414.pdf
Data publikacji:
2009
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
combustion
emissions
injection strategies
premixed combustion
ignition delay
Opis:
In recent years, the improvement of engine performance and emissions has become an extremely important concern. This study focuses on the injection strategy based on the injection pressure (IP) and duration between pilot injection and the main injection (dMI) using a multi cylinder common rail multiple injections diesel engine. The study was designed to produce improvements in fuel mixing via the injection strategy, to reduce the main ignition delay. This would contribute to a minimum amount of fuel burnt in the premixed combustion phase, leading to a reduction in emissions. Recent evidence shows that premixed combustion is significant in the controlling of emissions of nitrogen oxides (NOx) and soot. Six different IPs combined with a short and long dMI were compared in the attempt to improve engine performance and emissions. The engine performance was measured in terms of brake specific fuel consumption, ignition delay, heat release and peak in-cylinder pressure and emissions, specifically nitrogen oxides (NOx), total unburned hydrocarbons (THC), carbon monoxide (CO) and smoke emissions for each engine test condition. The evidence from this study shows that the effect of IP is more dominant than dMI in terms of peak cylinder pressure, heat release, brake specific fuel consumption and emissions. However, the dMI shows a strong effect at a higher engine speed.
Źródło:
Journal of KONES; 2009, 16, 2; 9-22
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The relation between glutathione S-Transferase M1 null-genotype and cardiac problems in beta-thalassemia
Autorzy:
Abo-Shanab, Asem
El-Desouky, Mohamed
Kholoussi, Naglaa
El-Kamah, Ghada
Helwa, Iman
Powiązania:
https://bibliotekanauki.pl/articles/1038809.pdf
Data publikacji:
2016
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
GSTM1
β-thalathemia
Cardiac complications
hs-CRP
IL-6
Opis:
This work was carried out to investigate the role of Glutathione S-Transferase M1 (GSTM1) null genotype frequency in prognosis of β-thalassemia, and to detect the correlation between GSTM1 null genotype and appearance of cardiac complications in β-thalassemia. Materials and Methods. The studied groups in the present work were divided to three groups (group I: 20 healthy subjects, group II: 56 β-thalassemic patients and group III: 16 β-thalassemic patients with cardiac complications were taken from group II). The measurement of human high sensitive C-reactive protein (hs-CRP) was performed using nephelometry. GSTM1 genotype was detected by Polymerase Chain Reaction (PCR) and cardiac complications were determined by using Echocardiography. Results. A statistically significant increase in hs-CRP and interleukin-6 (IL-6) levels was found in β-thalassemic patients with cardiac complications compared to normal subjects. Results showed no relation between GSTM1 null genotype frequency neither with β-thalassemia nor with cardiac complications appearance, where the interaction between GSTM1 null genotype in β-thalassemic patients with cardiac complications and healthy subjects were insignificant compared to subjects with GSTM1 non-null genotype. Conclusions. GSTM1 null genotype frequency has no role in β-thalassemia or cardiac complications appearance.
Źródło:
Acta Biochimica Polonica; 2016, 63, 2; 267-271
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sentence Recognition in the Presence of Competing Speech Messages Presented in Audiometric Booths with Reverberation Times of 0.4 and 0.6 Seconds
Autorzy:
Abouchacra, K. S.
Koehnke, J.
Besing, J.
Letowski, T.
Powiązania:
https://bibliotekanauki.pl/articles/177482.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
sound field testing
reverberation
speech recognition
Opis:
This study examined whether differences in reverberation time (RT) between typical sound field test rooms used in audiology clinics have an effect on speech recognition in multi-talker environments. Separate groups of participants listened to target speech sentences presented simultaneously with 0-to-3 competing sentences through four spatially-separated loudspeakers in two sound field test rooms having RT = 0:6 sec (Site 1: N = 16) and RT = 0:4 sec (Site 2: N = 12). Speech recognition scores (SRSs) for the Synchronized Sentence Set (S3) test and subjective estimates of perceived task difficulty were recorded. Obtained results indicate that the change in room RT from 0.4 to 0.6 sec did not significantly influence SRSs in quiet or in the presence of one competing sentence. However, this small change in RT affected SRSs when 2 and 3 competing sentences were present, resulting in mean SRSs that were about 8–10% better in the room with RT = 0:4 sec. Perceived task difficulty ratings increased as the complexity of the task increased, with average ratings similar across test sites for each level of sentence competition. These results suggest that site-specific normative data must be collected for sound field rooms if clinicians would like to use two or more directional speech maskers during routine sound field testing.
Źródło:
Archives of Acoustics; 2011, 36, 1; 3-14
0137-5075
Pojawia się w:
Archives of Acoustics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wpływ preparatu białkowo-ksantofilowego PX z lucerny (Medicago sativa L.) na aktywność wybranych enzymów w komórkach wątroby tuczników
The effect of protein-xanthophyll concentrate (PX) from alfalfa (Medicago sativa L.) on the activity of selected enzymes in the liver cells of fattening pigs
Autorzy:
Abramowicz, K.
Krauze, M.
Grela, E.R.
Powiązania:
https://bibliotekanauki.pl/articles/843823.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Zootechniczne
Tematy:
trzoda chlewna
zywienie zwierzat
dodatki paszowe
lucerna
koncentrat bialkowo-ksantofilowy
watroba
enzymy
dehydrogenaza mleczanowa
dehydrogenaza jablczanowa
dehydrogenaza bursztynianowa
hydrolaza glukozo-6-fosforanowa
aktywnosc enzymatyczna
Opis:
W dostępnej literaturze krajowej i zagranicznej prezentowane są nieliczne doniesienia na temat aktywności enzymów wskaźnikowych, zwłaszcza markerowych, charakteryzujących pracę konkretnych organelli komórkowych. Ubogie są również informacje na temat zmian aktywności enzymów, jakie zachodzą pod wpływem żywieniowych czynników doświadczalnych. W doświadczeniu założono, że koncentrat białkowo-ksantofilowy PX z lucerny pozytywnie wpłynie na metabolizm, czego efektem będzie poprawa wskaźników produkcyjnych u tuczników. Celem badań było zatem sprawdzenie możliwości wykorzystania niestosowanych dotąd enzymów w ocenie poprawności zachodzących procesów biochemicznych po podaniu PX. Oceniano aktywność enzymów związanych z kluczowymi przemianami biochemicznymi zachodzącymi w komórce, co pozwala na ocenę poprawności zachodzących procesów, jak i reakcji ustroju na czynniki zewnętrzne. Doświadczenie przeprowadzono na 288 tucznikach (loszkach i wieprzkach) mieszańcach (wbp x Neckar), podzielonych na 4 grupy, zróżnicowane pod względem dawki i okresu podawania koncentratu białkowo-ksantofilowego PX z lucerny (Medicago sativa L.). Koncentrat z lucerny wprowadzono do mieszanki paszowej w miejsce poekstrakcyjnej śruty sojowej. Analizowano aktywność wybranych enzymów markerowych: dehydrogenazy mleczanowej (LDH), jabłczanowej (MDH), bursztynianowej (SDH) oraz hydrolazy glukozo-6-fosforanowej (G6PC). Wykazano obniżenie aktywności analizowanych enzymów w komórkach wątroby u zwierząt otrzymujących dodatek koncentratu PX w porównaniu do zwierząt z grupy kontrolnej, co sugeruje korzystny wpływ zastosowanego preparatu na przemiany metaboliczne u badanych zwierząt. Wyniki doświadczenia potwierdzają celowość stosowania w żywieniu świń koncentratu białkowo-ksantofilowego PX z lucerny, zwłaszcza w dawce 3% podawanej w sposób ciągły.
The available Polish and foreign literature contains few reports on the activity of indicator enzymes, especially marker enzymes, which characterize the work of specific cell organelles. Information on enzyme changes induced by experimental dietary factors is also scarce. We postulated that proteinxanthophyll PX alfalfa concentrate would have a positive effect on metabolism in fattening pigs, resulting in improved performance parameters. Therefore the aim of the study was to test the possibility of using enzymes that have not previously been used to assess the biochemical processes taking place following administration of PX. We evaluated the activity of enzymes associated with key biological transformations taking place in the cell, as this makes it possible to assess whether these processes are proceeding normally and to evaluate the response of the body to external factors. The experiment was conducted on 288 finishers (gilts and barrows), all of which were crossbreds (Polish Large White x Neckar), divided into 4 groups according to the dosage and duration of administration of proteinxanthophyll PX concentrate from alfalfa (Medicago sativa L.). The alfalfa concentrate was introduced to the compound feed in place of soybean extraction meal. We analysed the activity of selected marker enzymes: lactate dehydrogenase (LDH), malate dehydrogenase (MDH), succinate hydrolase (SDH), and glucose-6-phosphate hydrolase (G6PC). We found a decrease in the activity of the enzymes in the liver cells of the pigs receiving the PX concentrate as compared to the control, which suggests that the product had a favourable effect on their metabolism. The results confirm the benefit of using proteinxanthophyll PX in pig feed, particularly at a continuous dose of 3%.
Źródło:
Roczniki Naukowe Polskiego Towarzystwa Zootechnicznego; 2017, 13, 2
1733-7305
Pojawia się w:
Roczniki Naukowe Polskiego Towarzystwa Zootechnicznego
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Response of the Heat Affected Zone to Natural Aging in Friction Welded Al-Mg-Si-T6 Alloy
Autorzy:
Abudaia, F.
Marwan, K.
Powiązania:
https://bibliotekanauki.pl/articles/1207653.pdf
Data publikacji:
2014-02
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
81.20.Vj
Opis:
In this work, it is aimed to study the effect of welding parameters on the response of the fully reverted zone of the heat affected zone in Al-Mg-Si-T6 alloy to natural aging. The study takes in consideration the effect of welding time which usually receives less attention than other parameters. Rods of 25 mm diameter were friction welded at varying welding times and forge pressures. The highest hardness recovery in the fully reverted zone was obtained by a combination of a high heat input with a short welding time. These welding conditions produced a thermal welding cycle with higher cooling rate with a relatively longer time at the peak temperature. The high cooling rate is important to avoid the formation of the non-hardening $Mg_2Si$ precipitates which do not contribute to the hardness. The longer hold time at peak temperature permits more precipitate dissolution to increase the solute concentration in the solution before the rapid cooling.
Źródło:
Acta Physica Polonica A; 2014, 125, 2; 208-210
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Studies on Microstructural Evolution and Wear Behaviour of AlNi intermetallic Reinforced AA6061 alloy in T6 condition
Autorzy:
Abuthakir, J.
Subramanian, Ramanathan
Somasundara Vinoth, K.
Venkatesh, G.
Suganya Priyadharshini, G.
Krishnakumar, K.
Powiązania:
https://bibliotekanauki.pl/articles/2125525.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Al MMCs
peak aged (T6) condition
Al-Ni intermetallic reinforced composites
adhesive wear
Opis:
In the present investigation Ni particles were added in varying weight fractions (0.5, 1.0 and 1.5%) to AA6061 alloy during stir casting. To prepare Al-Ni intermetallic reinforced Aluminium Metal Matrix Composites (Al MMCs), as-cast samples were subjected to T6 treatment (Solutionization at 550°C followed by ageing at 2,4,6,8 and 10 hours). Base alloy was also subjected to T6 treatment for comparison purpose. Hardness of the samples were obtained using Vickers hardness test. Samples in the peak aged (T6) condition were subjected to metallographic examination. Influence of Ni particles on the hardness and grain refinement was investigated. X-ray Diffraction analysis of the Ni added samples revealed the presence of Al-Ni intermetallic phase formation in the peak aged (T6) Condition. Scanning Electron Microscope - Energy Dispersive X-Ray Spectroscopy analysis of composites in the peak aged (T6) condition were carried out to study the formation of the Al-Ni intermetallic phase. Effect of Al-Ni intermetallic phase on wear and friction behavior of the composite samples were studied and compared with that of the base alloy in the peak aged (T6) condition.
Źródło:
Archives of Metallurgy and Materials; 2022, 67, 3; 803--813
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Absorptions and Emissions for the TmCl$\text{}_{6}^{3-}$ Ion in Cs$\text{}_{2}$NaTmCl$\text{}_{6}$
Autorzy:
Acevedo, R.
Hurtado, O. F.
Portillo, C.
Stręk, W.
Powiązania:
https://bibliotekanauki.pl/articles/2029252.pdf
Data publikacji:
2001-12
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
32.70.Fw
Opis:
In this work we report both experimental and theoretical studies regarding the Cs$\text{}_{2}$NaTmCl$\text{}_{6}$ elpasolite-type system, for which we have an updated database from linear and nonlinear optics. Both the absorption and the emission spectra for this system are rather complicated and a generalized vibronic crystal field-closure-ligand polarization calculation model has been employed to rationalize the observed spectral intensities. The calculation has been carried out by neglecting the interaction among the internal and the external vibrations and theoretical calculations have been performed with reference to both the emissions $\text{}^{3}$H$\text{}_{4}$(Γ$\text{}_{i}$)>$\text{}^{3}$F$\text{}_{4}$(Γ$\text{}_{j}$) and the absorptions $\text{}^{3}$H$\text{}_{6}$(A$\text{}_{1}$)> $\text{}^{3}$F$\text{}_{4}$(Γ$\text{}_{i}$), $\text{}^{1}$G$\text{}_{4}$(Γ$\text{}_{i}$), $\text{}^{3}$H$\text{}_{5}$(Γ$\text{}_{l}$) withΓ$\text{}_{k}$ (k=i,j)=A$\text{}_{1}$,E,T$\text{}_{1}$,T$\text{}_{2}$ andΓ$\text{}_{l}$=E, $\text{}^{a}$T$\text{}_{1}$, $\text{}^{b}$T$\text{}_{1}$,T$\text{}_{2}$. The advantages and disadvantages of our model calculation are discussed in the text, and despite the simplicity of the model it is shown that it has got some utility and flexibility to gain understanding in these complex phenomena.
Źródło:
Acta Physica Polonica A; 2001, 100, 6; 829-844
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ligand-Framework Coupling Vibrations. The ^2E_g → ^4A$\text{}_{2g}$ Transition in the Cr(CN)_6$\text{}^{3-}$ Complex Ion
Autorzy:
Acevedo, R.
Passman, M.
Navarro, G.
Powiązania:
https://bibliotekanauki.pl/articles/2024002.pdf
Data publikacji:
2001-02
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
32.70.Fw
32.70.Cs
Opis:
In this research paper we examine the role played by the bending vibrational modes of motion, δ(Cr-C-N) to influence the observed overall and relative vibronic intensity distribution for the $\text{}^{2}$E$\text{}_{g}$ → $\text{}^{4}A_{2g}$ phosphorescence of the Cr(CN)$\text{}_{6}^{3-}$ complex ion. The calculation was carried out assuming both: (a) a seven-atom system model (molecular approximation) and (b) a negligible distortion from the octahedral symmetry for the system. The ligand polarization formalism was employed with reference to this system, since the ligand subsystems (CN)$\text{}^{-1}$ are highly polarizable and as a consequence a conventional crystal field calculation would be both unrealistic and unappropriate. This system was chosen since there is a solid evidence to conclude that vibrations of the same type in the τ$\text{}_{1u}$ and τ$\text{}_{2u}$ symmetry blocks induce comparable intensity. This is a clear indication that both the τ$\text{}_{1u}$ and τ$\text{}_{2u}$: δ(Cr-C-N) bending vibrations are exceptionally efficient to promote this radiative transition. This dynamical model is tested against the experimental data and it is shown that the model calculation, though approximate, gives results in excellent agreement with experiment.
Źródło:
Acta Physica Polonica A; 2001, 99, 2; 215-231
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Spectral Intensities for the Emission |$\text{}^{4}$S$\text{}_{3}\text{}_{/}\text{}_{2}$ Γ$\text{}_{8}$〉 → |$\text{}^{4}$I$\text{}_{15}\text{}_{/}\text{}_{2}$ Γ〉in the Cs$\text{}_{2}$NaErCl$\text{}_{6}$
Autorzy:
Acevedo, R.
Soto-Bubert, A.
Navarro, G.
Meruane, T.
Stręk, W.
Powiązania:
https://bibliotekanauki.pl/articles/2037134.pdf
Data publikacji:
2004-03
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
32.70.Cs
Opis:
We report explicit vibronic intensity calculations for the |$\text{}^{4}$S$\text{}_{3}\text{}_{/}\text{}_{2}$ Γ$\text{}_{8}$> → |$\text{}^{4}$I$\text{}_{15}\text{}_{/}\text{}_{2}$ Γ>excitations in the Cs$\text{}_{2}$NaErCl$\text{}_{6}$ elpasolite-type systems, based upon new and updated experimental data, obtained from optical absorption measurements made at 10 K, in the energy range from 6,000 up to 26,000 cm$\text{}^{-1}$. Our calculation model is a generalization of the vibronic crystal field-ligand polarization method and the calculation is performed using a minimum set of adjustable parameters - all and each of them have a clear physical meaning. Our strategy was chosen so as to make a significant distinction with previous calculations, performed by other authors, who have worked out a model originated from a supra-parameterized scheme, within the framework of the superposition model of Newman. Throughout the course of the current work, it is shown that our model is suitable to handle this kind of calculations and also that the numerical results obtained are in fairly good agreement with experiment.
Źródło:
Acta Physica Polonica A; 2004, 105, 3; 233-251
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Emission Spectra for the Cs$\text{}_{2}$NaScCl$\text{}_{6}$:MoCl$\text{}_{6}^{3-}$ System in the Fm3m Space Group
Autorzy:
Acevedo, R.
Meruane, T.
Navarro, G.
Powiązania:
https://bibliotekanauki.pl/articles/2024014.pdf
Data publikacji:
2001-02
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
32.70.Fw
32.70.Cs
Opis:
On the basis of the data reported by Flint and Paulusz, we have undertaken a theoretical investigation of the intensity mechanism for the various emissions:Γ$\text{}_{8}$($\text{}^{2}$T$\text{}_{2g}$ ) → Γ$\text{}_{8}$($\text{}^{4}$A$\text{}_{2g}$), Γ$\text{}_{8}$($\text{}^{2}$E$\text{}_{g}$), Γ_8($\text{}^{2}$T$\text{}_{1g}$), Γ$\text{}_{6}$($\text{}^{2}$T$\text{}_{1g}$) for the Cs$\text{}_{2}$NaScCl$\text{}_{6}$:MoCl$\text{}_{6}^{3-}$ system in the Fm3m-space group. The experimental data available refer to the visible and near infrared luminescence spectra of MoCl$\text{}_{6}^{3-}$ complex ion in different hosts, such as Cs$\text{}_{2}$NaMCl$\text{}_{6}$ (M = Sc, Y, In), measured between 15,000 cm$\text{}^{-1}$ and 3,000 cm$\text{}^{-1}$ at liquid helium temperatures. At least, five luminescence transitions have been identified and assigned and each of them show extensive vibronic structure. A careful analysis of this experimental data shows that for the various observed electronic transitions, the vibrational frequencies change only slightly, and therefore there is no indication that the system undergoes both a significant and relevant Jahn-Teller distortion (along an active coordinate). There is however clear evidence that for the chloro-elpasolites, there is a strong resonance interaction between ν$\text{}_{3}$(τ$\text{}_{1u}$ : stretching) of the MoX$\text{}_{6}^{3-}$, complex ion and that of the host when M = In, Y. Thus for M = Sc, the slighter higher host ν$\text{}_{3}$, wave number is likely to minimize the effect of this coupling. This evidence will allow us for the Cs$\text{}_{2}$NaScCl$\text{}_{6}$:MoCl$\text{}_{6}^{3-}$ system to neglect, in the first-order approximation, the coupling among the internal and the external vibrations and to proceed using a both a molecular and the independent system models.
Źródło:
Acta Physica Polonica A; 2001, 99, 2; 233-242
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dwuogniskowe toryczne soczewki wewnątrzgałkowe – 6 lat doświadczeń własnych
Bifocal toric intraocular lenses – 6 years of own experience
Autorzy:
Adam, Cywiński
Sandra, Penter
Łukasz, Bednarski
Daniela, Ferda-Lewińska
Marcin, Gacek
Powiązania:
https://bibliotekanauki.pl/articles/1927651.pdf
Data publikacji:
2018
Wydawca:
Medical Education
Tematy:
refrakcyjna wymiana soczewki
soczewka dwuogniskowa wewnątrzgałkowa
witrektomia tylna
zaćma
zwyrodnienie plamki żółtej związane z wiekiem
Opis:
Przedstawiono retrospektywną analizę parametrów widzenia oraz zgłaszanych dolegliwości pooperacyjnych u 428 pacjentów (606 oczu) poddanych zabiegowi usunięcia zaćmy lub refrakcyjnej wymianie soczewki z implantacją soczewek dwuogniskowych z grupy Oculentis®. Wszczepienia jedno- lub obuocznego dokonano u pacjentów normowzrocznych, krótkowzrocznych, nadwzrocznych oraz u pacjentów ze stwierdzonym astygmatyzmem rogówkowym. Największą grupę stanowiły osoby, którym wszczepiono soczewki sferyczne z addycją do bliży o wartości 3,0 Dsph, w dalszej kolejności – z addycją 1,5 Dsph oraz soczewki toryczne. Osobną grupę poddaną analizie stanowili pacjenci, u których wykonano zabieg witrektomii tylnej, oraz pacjenci, u których przedoperacyjnie stwierdzono zmiany zwyrodnieniowe plamki typu starczego (AMD). Głównymi kryteriami kwalifikacyjnymi do zabiegu były chęć pozbycia się korekcji okularowej oraz możliwość uzyskania dobrej ostrości wzroku do dali i bliży. Praktycznie wszyscy pacjenci uzyskali satysfakcjonującą ostrość wzroku oraz jakość widzenia przy zachowaniu określonych kryteriów kwalifikacyjnych. Jedno z kryteriów zakłada, iż u pacjentów z większą średnicą źrenicy, powyżej 5,8 mm, wszczepiano soczewkę z mniejszą addycją do bliży, a astygmatyzm rogówkowy korygowano nawet przy wartościach poniżej 1 Dcyl.
A retrospective analysis of parameters of vision and postoperative complaints in 428 patients (606 eyes) undergoing cataract surgery or clear lens extraction with ontime bifocal lens implantation from Oculentis®. An artificial lens implantation has been used in one or in both eyes in patients without preoperative eye defect. Next groups have included patients with preoperative hyperopia, myopia and with corneal astigmatism. The biggest number of patients have got spherical lenses with addition +3,0 Dsph to near distances, subsequently with addition +1,5 Dsph and toric lenses. Another two groups who were analyzed were whose patients who needed posterior vitrectomy and who have been preoperatively diagnosed with Age Related Macular Changes, dry and exudative changes. The main inclusion criteria was a need to become free of glasses to far and near distances. Almost all of patients have gained satisfactory visual acuity and quality of vision while maintaining the appropriate inclusion criteria. One of the criteria assumes that patients with bigger size of the pupil have implanted lenses with less addition to near distances and corneal astigmatism was corrected even if the value was below 1 dioptria.
Źródło:
OphthaTherapy; 2018, 5, 4; 246-253
2353-7175
2543-9987
Pojawia się w:
OphthaTherapy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Noah’s Ark and the Ark of the Covenant
Autorzy:
Adamczewski, Bartosz
Powiązania:
https://bibliotekanauki.pl/articles/2029750.pdf
Data publikacji:
2021-07-20
Wydawca:
Uniwersytet Kardynała Stefana Wyszyńskiego w Warszawie
Tematy:
arka Noego
Arka Przymierza
opowiadanie o potopie (Rdz 6–9)
Księga Rodzaju
Księga Powtórzonego Prawa
hipertekstualizm
Noah’s ark
ark of the covenant
Genesis flood account (Genesis 6–9)
book of Genesis
book of Deuteronomy
hypertextuality
Opis:
The similarities between Noah’s ark and the saving boat in Mesopotamian flood accounts are widely known. Likewise known are the links between Noah’s ark and the chest of Moses (Exod 2:3). However, the connections between the “chest” of Noah and the “chest” of the testimony have not hitherto drawn adequate scholarly attention. The article explores these connections on both the linguistic and the conceptual level. Moreover, it investigates their function in hypertextual links of the Genesis flood account to earlier Israelite literary works, especially the book of Deuteronomy and the book of Joshua.
Podobieństwa pomiędzy arką Noego a ratującą łodzią w mezopotamskich opowiadaniach o potopie są szeroko znane. Podobnie znane są powiązania między arką Noego a szkatułą Mojżesza (Wj 2,3). Jednakże powiązania między „skrzynią” Noego a „skrzynią” Świadectwa nie przyciągnęły dotąd adekwatnej uwagi badaczy. Artykuł analizuje te powiązania na poziomach lingwistycznym i konceptualnym. Stara się ponadto prześledzić ich funkcję w hipertekstualnych powiązaniach opowiadania o potopie z Księgi Rodzaju z wcześniejszymi izraelskimi dziełami literackimi, szczególnie z Księgą Powtórzonego Prawa i Księgą Jozuego.
Źródło:
Collectanea Theologica; 2021, 91, 2; 5-19
0137-6985
2720-1481
Pojawia się w:
Collectanea Theologica
Dostawca treści:
Biblioteka Nauki
Artykuł

Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies