Informacja

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

English (EN)·Polski (PL)·Yкраїнський (UK)
Przejdź do strony domowej biblioteki Centralna Biblioteka Wojskowa Link otwiera się w nowym oknie Logo biblioteki Prolib Integro - strona głównaCentralna Biblioteka Wojskowa

Wyszukujesz frazę "glasses" wg kryterium: Wszystkie pola

  Lista filtrów
Wyrównaj
Wyświetlanie 1-15 z 167
Tytuł:
Puszka ochronna dla naczyń sedymentacyjnych do pomiaru zapylenia powietrza atmosferycznego
Predokhranitel'naja metallicheskaja krep' dlja stekljanykh sedimentatel'nykh banok, sluzhashhikh dlja izmerenija zagrjaznenija atmosfernogo vozdykha
Shelter boxes for sedimental glasses
Autorzy:
Hohul, M.
Zasadzien, Z.
Powiązania:
https://bibliotekanauki.pl/articles/873033.pdf
Data publikacji:
1963
Wydawca:
Narodowy Instytut Zdrowia Publicznego. Państwowy Zakład Higieny
Tematy:
zanieczyszczenia powietrza
zapylenie atmosfery
powietrze atmosferyczne
stopien zanieczyszczenia
zanieczyszczenia mineralne
puszki metalowe
zbiorniki sedymentacyjne
mierniki zapylenia
air contaminant
atmospheric dust
atmospheric air
pollution degree
metal packaging
sedimentation tank
dustiness control
Źródło:
Roczniki Państwowego Zakładu Higieny; 1963, 14, 1
0035-7715
Pojawia się w:
Roczniki Państwowego Zakładu Higieny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On the Possible Analogy between Spin-Glasses and Systems
Autorzy:
Łusakowski, A.
Powiązania:
https://bibliotekanauki.pl/articles/1920977.pdf
Data publikacji:
1992-10
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
75.10.Nr
71.55.Dp
Opis:
An analogy between a spin-glass and a material containing DX centers is postulated. The basis of the analogy is the formal identity of the Hamiltonians of these two systems. A correspondence between parameters of the spin-glass and of the DX system is established. Experiments which could support the above idea are proposed.
Źródło:
Acta Physica Polonica A; 1992, 82, 4; 620-622
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Positron Annihilation Study of Structural Relaxation and Crystallization in Metallic Glasses Fe$\text{}_{78-x}$Co$\text{}_{x}$Si$\text{}_{9}$B$\text{}_{13}$
Autorzy:
Filipecki, J.
Powiązania:
https://bibliotekanauki.pl/articles/1929084.pdf
Data publikacji:
1993-03
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
61.43.Dq
Opis:
Results of measurements of positron lifetimes and X-ray diffraction in the annealed metallic glasses Fe$\text{}_{78-x}$Co$\text{}_{x}$Si$\text{}_{9}$B$\text{}_{13}$ (x = 0, 20, 40, 60, 78) before and after the process of crystallization are presented. From the results it follows that the annealing process below the crystallization temperature causes changes in concentrations of positron-trapping areas and can be consistently described as the result of two contributions: topological and chemical short range ordering. The process of crystallization causes precipitation of α-Fe and β-Co crystalline phases and also formation of microvoids in the investigated samples.
Źródło:
Acta Physica Polonica A; 1993, 83, 3; 303-306
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparison of Optical Properties of Eu$\text{}^{3+}$ Ions in the Silica Gel Glasses Obtained by Different Preparation Techniques
Autorzy:
Legendziewicz, J.
Stręk, W.
Sokolnicki, J.
Keller, B.
Borzechowska, M.
Powiązania:
https://bibliotekanauki.pl/articles/1945686.pdf
Data publikacji:
1996-08
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
78.20.Wc
78.55.Hx
71.55.Jv
Opis:
Silica sol-gel glasses doped with Eu$\text{}^{3+}$ ions were obtained by different preparation techniques. The absorption, emission and excitation spectra of the obtained glasses were measured in the range of 77-300 K. The energy level diagrams of Eu$\text{}^{3+}$ ions were derived. An intensity analysis of f-f transitions was performed. In particular, polymeric structure behaviour of europium compounds entrapped in silica gels glasses was temperature controlled during the preparation of glasses. Their optical properties were investigated.
Źródło:
Acta Physica Polonica A; 1996, 90, 2; 461-468
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of Freon Heat Treatment on Optical properties of Er-Doped Silica-Gel Glasses
Autorzy:
Malashkevich, G. E.
Poddenezhny, E. N.
Melnichenko, I. M.
Gaishun, V. E.
Semchenko, A. V.
Maruszewski, K.
Stręk, W.
Powiązania:
https://bibliotekanauki.pl/articles/1945657.pdf
Data publikacji:
1996-08
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
78.55.Hx
Opis:
Theeffect of freon heat treatment on optical properties of Er-doped silica glasses obtained by the sol-gel method was investigated. It was found that fluorine ions in the process of hydrolysis replace hydroxyl ions in the host and form the complexes with Er$\text{}^{3+}$ ions. It leads to a significant improvement of optical properties of Er doped silica glass.
Źródło:
Acta Physica Polonica A; 1996, 90, 2; 419-421
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
DSC Studies of Some Bismuth-phosphate Glasses
Autorzy:
El-Adawy, A. A.
Powiązania:
https://bibliotekanauki.pl/articles/1992707.pdf
Data publikacji:
1998-10
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
65.40.+g
Opis:
The differential scanning calorimetry measurements were made on a series of bismuth-iron-phosphate glasses over a temperature range around the glass transition temperature. The activation energy for structural relaxation, ΔH, was determined and found to increase with the metal-to-phosphorus ratio. The differential scanning calorimetry data were analyzed using the Adam-Gibbs-Scherer model of the glass transition. This analysis suggests that these glasses undergo a transition from the strong to the fragile glass regime as the metal-to-phosphorus ratio is increased.
Źródło:
Acta Physica Polonica A; 1998, 94, 4; 661-670
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Intrinsic Luminescence of the Undoped Glasses of (CaO-Ga$\text{}_{2}$O$\text{}_{3}$-GeO$\text{}_{2}$) System
Autorzy:
Padlyak, B. V.
Bordun, O. M.
Buchynskii, P. P.
Powiązania:
https://bibliotekanauki.pl/articles/2010938.pdf
Data publikacji:
1999-06
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
42.70.Ce
78.60.-b
76.30.Mi
Opis:
For the first time the intrinsic luminescence in the undoped (CaO-Ga$\text{}_{2}$O$\text{}_{3}$-GeO$\text{}_{2}$) glasses with different composition has been found and investigated in the 80÷300 K temperature range. The new glasses of high chemical purity and optical quality with stoichiometric composition similar to that in calcium-gallium- germanium garnet (Ca$\text{}_{3}$Ga$\text{}_{2}$Ge$\text{}_{3}$O$\text{}_{12}$), trigonal Ca-gallogermanate (Ca$\text{}_{3}$Ga$\text{}_{2}$Ge$\text{}_{4}$O$\text{}_{14}$), and Ca$\text{}_{3}$Ga$\text{}_{2}$O$\text{}_{6}$ crystals were obtained by the high-temperature synthesis method. The luminescence and photoexcitation spectra analysis, supported by EPR spectroscopy data, yields the following results: (i) the UV-excited non-elementary broad emission band with maxima at roughly 500 nm and 420 nm in the (CaO-Ga$\text{}_{2}$O$\text{}_{3}$-GeO$\text{}_{2}$) glasses is due to recombination of ensemble of the transient hole O$\text{}^{-}$ centres; (ii) the emission bands with maxima at nearly 380 and 710 nm, which were distinctly revealed in glasses with the Ca$\text{}_{3}$Ga$\text{}_{2}$Ge$\text{}_{4}$O$\text{}_{14}$ and Ca$\text{}_{3}$Ga$\text{}_{2}$O$\text{}_{6}$ compositions, are assigned to the luminescence of UV-induced electron centres of two different types. Possible models of the luminescence centres in (CaO-Ga$\text{}_{2}$O$\text{}_{3}$-GeO$\text{}_{2}$) glass network are discussed.
Źródło:
Acta Physica Polonica A; 1999, 95, 6; 921-929
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Short- and medium-range order in bismuth-silicate glasses: a solecular dynamics study
Autorzy:
Witkowska, A.
Rybicki, J.
Laskowski, R.
Mancini, G.
Feliziani, S.
Alda, W.
Powiązania:
https://bibliotekanauki.pl/articles/1954531.pdf
Data publikacji:
1999
Wydawca:
Politechnika Gdańska
Tematy:
structure of matter
oxide glasses
MD simulations
Opis:
We report on the results of classical molecular dynamics (MD) simulations of str ucture of amorphous 15 Bi2O3 85 SiO2 [% mol] and 40 Bi2O3 60 SiO2 [% mol], and their totally reduced forms, 15 Bi2 85 SiO2 [% mol], and 40 Bi2 60 SiO2 [% mol], respectively. The simulations have been perfo rmed in the isobaric-isoenthalpic ensemble, using a two-body interaction potential. The set of the potential parameters was constructed as a suitable com bination of the parameters which were previously proposed for pure Bi2O3, and SiO2. Both unreduced, and reduced sy stems were initially prepared as well equilibrated hot melts, and then slowly co oled down to 300K. The structural information from the MD simulations was obtained from radial and angular distribution functions, static structural factors, Voronoi polyhedra sta tistics, and ring analysis. The simulation results can be summarised as follows. In unreduced glass with 15% [mol] Bi2O3 contents, the silicon structural units (mainly regular tetrahedra) form continuous network, whereas in 40% [mol] Bi2O3 glass these units are disconnected. In both unreduced systems Bi ions have mainly six-fold oxygen co-ordination, and no dominating structural unit can be individuated. However, the distorted bismu th units form a continuous network. In both totally reduced glasses (15% Bi2 85% SiO2, and 40% Bi2 60% SiO2 [% mol]), the silica network is built entirely from corner shari ng SiO4 tetrahedra. The structure of the silica subsystem is similar to that of pure *-SiO2. After the reduction, the Bi-Bi co-ordination significantly increases, whereas the first neighbour distance decreases. Moreover, partial static structural fact ors for Bi-Bi pairs indicate that the medium-range order in reduced glasses exhi bits greater periodicity than in unreduced glasses. Neutral Bi atoms form small clusters within the silica matrix.
Źródło:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 1999, 3, 2; 239-254
1428-6394
Pojawia się w:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Blue fluorescence of Li↓2B↓4O↓7 glasses doped with rare-earths and transition metal ions
Autorzy:
Kaczmarek, Sławomir M.
Koepke, Czesław.
Grinberg, Marek.
Majchrowski, Andrzej.
Wiśniewski, Krzysztof.
Czuba, Mariusz.
Powiązania:
Biuletyn Wojskowej Akademii Technicznej 2001, nr 8, s. 131-145
Data publikacji:
2001
Tematy:
Krystalografia
Luminescencja
Szkło
Opis:
Niebieska fluorescencja szkieł Li↓2B↓4O↓7 domieszkowanych jonami ziem rzadkich i metali przejściowych.
Rys., tab.; Bibliogr.; Abstr., Rez., streszcz.
Dostawca treści:
Bibliografia CBW
Artykuł
Tytuł:
Liquation of Vycor Glasses - Study by Positron Annihilation Lifetime Method
Autorzy:
Jasińska, B.
Dawidowicz, A. L.
Radkiewicz, S.
Powiązania:
https://bibliotekanauki.pl/articles/2024266.pdf
Data publikacji:
2001
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
78.70.Bj
61.43.Gt
Opis:
Two Vycor glasses of different percentages of the components were liquated between 725 K and 950 K and leached in order to produce pores. Little intermolecular voids characterized by ortho-positronium lifetime valueτ$\text{}_{2}$≈1.5 ns were observed simultaneously. At the first stage of pore formation the intensity I$\text{}_{2}$ decreased considerably for both glasses, while at liquation temperatures higher than 825 K it increased again. The increase in I$\text{}_{2}$ resulted from changes in the properties of the bulk material. The growth ofτ$\text{}_{2}$ in this range of temperatures was also observed.
Źródło:
Acta Physica Polonica A; 2001, 99, 3-4; 379-384
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Surfaces of Electron-Emitting Glasses Studied by a Slow Positron Beam
Autorzy:
Pliszka, D.
Gazda, M.
Kusz, B.
Trzebiatowski, K.
Karwasz, G. P.
Deng, W.
Brusa, R. S.
Zecca, A.
Powiązania:
https://bibliotekanauki.pl/articles/2025748.pdf
Data publikacji:
2001
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
71.60.+z
78.70.Bj
Opis:
Semi-conducting glasses used for electron multipliers and microchannel plate devices are obtained by surface modification of Pb or Bi-reach silicon-based glasses. The reduced layer extends down to 200-500 nm, much more than the effective depth of the electron-emitting layer. By the use of slow-positron beam we monitor the structural changes undergoing in near-to-surface layers after isothermal annealing. The measurements suggest a possible correlation between secondary-electron emission coefficient and the Doppler-broadening S-parameter. On these samples there were also performed atomic force microscopy, secondary electron emission, differential scanning calorimetry, and electric conductivity measurements.
Źródło:
Acta Physica Polonica A; 2001, 99, 3-4; 465-472
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Users’ Demands Regarding Dental Safety Glasses. Combining a Quantitative Approach and Grounded Theory for the Data Analysis
Autorzy:
Lonnroth, E. C.
Shahnavaz, H.
Powiązania:
https://bibliotekanauki.pl/articles/91224.pdf
Data publikacji:
2001
Wydawca:
Centralny Instytut Ochrony Pracy
Tematy:
dental safety glasses
user's demands
qualitative and quantitative methods
usługi stomatologiczne
środki ochrony indywidualnej
okulary ochronne
okulary filtracyjne
choroby oczu i przydatków
personel służby zdrowia
Opis:
Eye infections are common among dentists and many are concerned, but few are using proper eye protection. To understand users’ demands behind the low use of safety glasses, all dental teams in Sweden were asked which factors they found most important when choosing dental safety glasses, and rate the importance of 31 statements regarding ergonomic aspects of dental safety glasses in a questionnaire. Data were analysed using the Grounded Theory and a quantitative approach. Results showed that dentists ranked the visual aspects as most important and chair assistants the protective aspects. The highly visual demanding work performed by dentists requires safety glasses that are not yet available on the market, which might explain the low use.
Źródło:
International Journal of Occupational Safety and Ergonomics; 2001, 7, 1; 49-59
1080-3548
Pojawia się w:
International Journal of Occupational Safety and Ergonomics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A molecular dynamics study of the influence of chemical reduction on the structure of amorphous Germania
Autorzy:
Witkowska, A.
Murawski, L.
Bergmański, G.
Powiązania:
https://bibliotekanauki.pl/articles/1963001.pdf
Data publikacji:
2002
Wydawca:
Politechnika Gdańska
Tematy:
oxide glasses
hydrogen reduction
molecular dynamics
structural modelling
Opis:
The contribution is dedicated to the molecular dynamics (MD) study of the structure of reduced germania glass of composition 1Ge 1GeO2. The work is inspired by a recent report on the formation of Ge clusters in hydrogen reduced germanate glasses containing oxides of heavy metals. The MD simulations have been performed in the microcanonical (NVE) ensemble, using a simple two-body Born-Mayer-Huggins interaction potential. A tendency of germanium atoms to agglomeration into clusters, observed in the present calculations, is compared with an analogous tendency of Bi and Pb atoms, observed previously in the xBi (1-x)GeO2 and xPb (1-x)GeO2 systems. The differences in the short and medium-range order in GeO2 system between the 1Ge 1GeO2 and GeO2 glasses are discussed.
Źródło:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2002, 6, 2; 273-281
1428-6394
Pojawia się w:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Koncepcja światłowodowej sygnalizacji celu w geodezyjnych pomiarach kątowych na niedużych obiektach inżynierskich
The concept of fibre-optical marking of geodetic targets in the anregular measurements performed at small engineering objects
Autorzy:
Ćmielewski, K.
Powiązania:
https://bibliotekanauki.pl/articles/341488.pdf
Data publikacji:
2002
Wydawca:
Uniwersytet Przyrodniczy we Wrocławiu
Tematy:
pomiary geodezyjne
sprzęt
światłowody
obiekty inżynierskie
surveying
equipment
fibre-glasses
engineering objects
Opis:
W pracy zaprezentowano idee kształtowych światłowodowych celów do sygnalizowania punktów geodezyjnych usytuowanych na elementach obiektów inżynierskich podlegających pomiarom geodezyjnym. Określono wstępnie w warunkach laboratoryjnych dokładność pomiaru kierunku do celu sygnalizowanego światłowodem włóknistym.
This work presents the idea of special formed fibre-optical targets used for survey points marking. Such signals have usually been situated at engineering objects which should be periodicaly measured. Under laboratory conditions the accuracy of the direction to the target marked by a fibre-glass was determined.
Źródło:
Acta Scientiarum Polonorum. Geodesia et Descriptio Terrarum; 2002, 1, 1-2; 45-49
1644-0668
Pojawia się w:
Acta Scientiarum Polonorum. Geodesia et Descriptio Terrarum
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Site symmetries of rare-earth and transition metal ions in Li↓2B↓4O↓7 glasses
Autorzy:
Kaczmarek, Sławomir M.
Tsuboi, Taiju.
Boulon, Georges.
Majchrowski, Andrzej.
Kwaśny, Mirosław.
Powiązania:
Biuletyn Wojskowej Akademii Technicznej 2003, nr 4, s. 27-40
Data publikacji:
2003
Tematy:
Absorpcja
Szkło
Jony
Fizyka
Opis:
Symetrie położeń sieciowych jonów rzadkich i metali przejściowych w szkłach Li↓2B↓4O↓7.
Rys., tab.; Bibliogr.; Abstr., streszcz.
Dostawca treści:
Bibliografia CBW
Artykuł
Wyświetlanie 1-15 z 167

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