Temat: energy materials - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Studying of Perovskite Nanoparticles in PMMA Matrix Used as Light Converter for Silicon Solar Cell
Autorzy:: Lipiński, M.
Socha, R. P.
Kędra, A.
Gawlińska, K.
Kulesza-Matlak, G.
Major, Ł.
Drabczyk, K.
Łaba, K.
Starowicz, Z.
Gwóźdź, K.
Góral, A.
Popko, E.
Powiązania:: https://bibliotekanauki.pl/articles/356850.pdf
Data publikacji:: 2017
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: perovskite nanoparticles
light converters
solar cells
solar energy materials
Opis:: The nanoparticles of CH₃NH₃PbBr₃ hybrid perovskites were synthesized. These perovskite nanoparticles we embedded in polymethyl methacrylate (PMMA) in order to obtain the composite, which we used as light converter for silicon solar cells. It was shown that the composite emit the light with the intensity maximum at about 527 nm when exited by a short wavelength (300÷450 nm) of light. The silicon solar cells were used to examine the effect of down-conversion (DC) process by perovskite nanoparticles embedded in PMMA. For experiments, two groups of monocrystalline silicon solar cells were used. The first one included the solar cells without surface texturization and antireflection coating. The second one included the commercial cells with surface texturization and antireflection coating. In every series of the cells one part of the cells were covered by composite (CH₃NH₃PbBr₃ in PMMA) layer and second part of cells by pure PMMA for comparison. It was shown that External Quantum Efficiency EQE of the photovoltaic cells covered by composite (CH₃NH₃PbBr₃ in PMMA) layer was improved in both group of the cells but unfortunately the Internal Quantum Efficiency was reduced. This reduction was caused by high absorption of the short wavelength light and reabsorption of the luminescence light. Therefore, the CH₃NH₃PbBr₃ perovskite nanoparticles embedded in PMMA matrix were unable to increase silicon solar cell efficiency in the tested systems.
Źródło:: Archives of Metallurgy and Materials; 2017, 62, 3; 1733-1739
1733-3490
Pojawia się w:: Archives of Metallurgy and Materials
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Synthesis of High-Energy Polymer : Glycidyl Azide Polymer (GAP)
Synteza wysokoenergetycznego polimeru : poliazydku glicydylu (GAP)
Autorzy:: Kasztankiewicz, A.
Kogut, A.
Jankiewicz, M.
Maksimowski, P.
Powiązania:: https://bibliotekanauki.pl/articles/403656.pdf
Data publikacji:: 2018
Wydawca:: Wojskowa Akademia Techniczna im. Jarosława Dąbrowskiego
Tematy:: high energy materials
energetic binder
GAP
materiały wysokoenergetyczne
energetyczne lepiszcza
Opis:: Glycidyl Azide Polymer (glycidyl polyazide) (GAP) is one of the best known energetic binders, applicable as a component increasing a calorific value of rocket propellants. In this article, a synthesis of GAP is described allowing to obtain a polymer of different molecular masses. The change of a molecular mass can influence on properties of the obtained compounds. The synthesis was carried out according to an active monomer mechanism. The obtained products were characterized using such methods as FTIR, GPC, MALDI-ToF, TG, and NMR.
Poliazydek glicydylu (GAP) jest jednym z najbardziej znanych lepiszczy energetycznych, znajdujących zastosowanie jako składnik zwiększający kaloryczność paliw rakietowych. W artykule opisano syntezę GAP-u pozwalającą na uzyskanie polimeru o różnych masach cząsteczkowych. Zmiana masy cząsteczkowej może wpływać na właściwości otrzymanych związków. Syntezę prowadzono według mechanizmu aktywnego monomeru. Otrzymane produkty scharakteryzowano z wykorzystaniem takich technik, jak: FTIR, GPC, MALDI-ToF, TG i NMR.
Źródło:: Problemy Mechatroniki : uzbrojenie, lotnictwo, inżynieria bezpieczeństwa; 2018, 9, 2 (32); 59-72
2081-5891
Pojawia się w:: Problemy Mechatroniki : uzbrojenie, lotnictwo, inżynieria bezpieczeństwa
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Political Instability in the Countries of North Africa and its Impact on the Transport of Energy Materials
Autorzy:: Zawadzki, Józef
Powiązania:: https://bibliotekanauki.pl/articles/2023464.pdf
Data publikacji:: 2012-12-31
Wydawca:: Wydawnictwo Adam Marszałek
Tematy:: oil exports
transport of energy materials
North Africa
political system
Opis:: The events that took place in Tunisia in early 2011, proved to be very important for the whole international environment. The northern part of Africa is signifi cant for the Western countries for natural resources which are available there for these reasons, stable and politically predictable, situation in the countries situated there is a strategically important element of a global security system. Tunisia since mid December 2010 has witnessed riots of young people throughout the country who, in the desperate acts of the self burning claimed democracy in their country, reduction of unemployment (13%), improving the living conditions and prospects for a better tomorrow for young people. „Jasmine Revolution”, the name given by the French journal Le Monde to the riots, led to the overthrowing of President Ben Ali, after 23 years of rule and his escape to Saudi Arabia.
Źródło:: Polish Political Science Yearbook; 2012, 41; 187-211
0208-7375
Pojawia się w:: Polish Political Science Yearbook
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Import surowców energetycznych krajów Azji Południowo-Wschodniej, przypadek Singapuru
Import of energy resources by Southeast Asia - the case of Singapore
Autorzy:: Ipnarski, Grzegorz
Powiązania:: https://bibliotekanauki.pl/articles/591420.pdf
Data publikacji:: 2013
Wydawca:: Uniwersytet Ekonomiczny w Katowicach
Tematy:: Import
Surowce energetyczne
Energy raw materials
Opis:: Rising consumption of energy is an integral part of economic growth - the larger share of industrial activity and services in the GDP the larger the demand for energy. Southeast Asia, and especially Singapore, has been at the forefront of economic growth for decades. Coupled with geological make-up of the region of unevenly spread energy resources countries are forced to satisfy their needs with imports. Most important is import of crude oil. Persian Gulf countries forming the Gulf Cooperating Council are the main partners supplying crude to Association of South East Asian Nations. Singapore as the only country in ASEAN without any natural resources is currently dependent on imports of energy resources from the Persian Gulf countries.
Źródło:: Studia Ekonomiczne; 2013, 170; 218-238
2083-8611
Pojawia się w:: Studia Ekonomiczne
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: A Predictive Method for the Heat of Explosion of Non-ideal Aluminized Explosives
Autorzy:: Zhang, Q.
Chang, Y.
Powiązania:: https://bibliotekanauki.pl/articles/358737.pdf
Data publikacji:: 2013
Wydawca:: Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
Tematy:: aluminized explosives
heat of explosion
thermodynamic
nonideal explosives
high energy materials
Opis:: The heat of explosion is one of the most important thermodynamic parameters of aluminized explosives. Two improvements in numerical calculations to predict the behaviour of the explosion of non-ideal aluminized explosives were completed in this work. The chemical reaction between aluminum and the C-J detonation products of high energy ingredients was determined and the equation of state for the detonation products of high energy ingredients was revised. The constant k in the BKW equation was revised to obtain perfect results for predicting the C-J parameters for high energy ingredients. The predicted results show that the heats and temperatures of aluminized explosives become maximized when the mass fraction of aluminum powder is 30%, which is in good agreement with the results obtained by empirical formulae.
Źródło:: Central European Journal of Energetic Materials; 2013, 10, 4; 541-554
1733-7178
Pojawia się w:: Central European Journal of Energetic Materials
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Towards New Directions in Oxidizers/Energetic Fillers for Composite Propellants: an Overview
Autorzy:: Dey, A.
Sikder, A. K.
Talawar, M. B.
Chottopadhyay, S.
Powiązania:: https://bibliotekanauki.pl/articles/358191.pdf
Data publikacji:: 2015
Wydawca:: Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
Tematy:: binder
oxidizer
composite propellant
burn rate modifier
plasticizer
high energy materials
Opis:: There is continued interest in the development of safe and reliable composite propellant formulations using modern energetic ingredients such as energetic oxidizers/energetic ingredients, energetic binders, and energetic ballistic modifiers. There are continued efforts by energetic materials researchers, scientists, technologists and engineers to design composite propellant formulations with better ballistic properties than conventional formulations. The efforts in many research and development (R & D) laboratories all over the world are aimed at utilizing modern oxidizers/ energetic fillers for the development of composite propellant formulations for both space and defence applications. Composite propellants are considered to be the major source of chemical energy for rockets and missiles. Energetic oxidizers/fillers play vital roles in the preparation or manufacture of composite propellant formulations. Various energetic oxidizers/fillers have been developed during the last five decades to address environmental safety, high energy and processing conditions. In this article, the authors have reviewed the characteristic properties of the energetic oxidizers/fillers used in the preparation of composite propellants. The characteristic properties of the energetic ingredients play an important role in the preparation of composite propellant formulations with the desired mechanical properties. The advantages and disadvantages of various energetic oxidizers/ingredients for specific and potential propellant applications are also highlighted throughout the course of this review article. The future direction in composite propellant formulations calls for the development of green propellant formulations. Efforts will continue to seek alternative and more energetic oxidizers/fillers in comparison to conventional oxidizers. There is an urgent need to replace conventional oxidizers such as ammonium perchlorate with eco-friendly ingredients.
Źródło:: Central European Journal of Energetic Materials; 2015, 12, 2; 377-399
1733-7178
Pojawia się w:: Central European Journal of Energetic Materials
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Rolniczy rynek technik i produktów zastępczych w pierwszej połowie XX wieku
The agricultural market of techniques and substitute products in the first half of 20th century
Autorzy:: Zalewski, P.
Powiązania:: https://bibliotekanauki.pl/articles/292035.pdf
Data publikacji:: 2011
Wydawca:: Polskie Towarzystwo Inżynierii Rolniczej
Tematy:: rolnictwo
surogaty
surowce energetyczne
surowce techniczne
żywność
agriculture
surrogates
energy materials
technical materials
food
Opis:: Podczas obydwu wojen światowych rolnictwo na ternie dzisiejszej Polski stanowiło zaplecze surowcowe i energetyczne dla niemieckiej gospodarki. Przedsięwzięcie realizowane z determinacją, na wielką skalę, ze zmienną skutecznością. Do niektórych ówczesnych działań można doparzyć się analogii w obecnych pokojowych czasach w Europie. Wprawdzie z innych pobudek, ale zawsze na bazie rolnictwa.
The agriculture on the territory of present-day Poland constituted a supply of the raw material as well as energy source for German economics during both world wars. A large-scale undertaking, carried out with determination and with variable effectiveness. Some of the actions of the time resemble those of today's Europe. Indeed, the reasons for them may be different, nevertheless, they are still based on agriculture.
Źródło:: Inżynieria Rolnicza; 2011, R. 15, nr 5, 5; 291-298
1429-7264
Pojawia się w:: Inżynieria Rolnicza
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Review of Methods for Testing the Compatibility of High Energy Mixed Components
Autorzy:: Gołofit, Tomasz
Zakościelny, Bartosz
Maksimowski, Paweł
Chmielarek, Michał
Cieślak, Katarzyna
Sałaciński, Tomasz
Powiązania:: https://bibliotekanauki.pl/articles/27787910.pdf
Data publikacji:: 2021
Wydawca:: Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
Tematy:: STANAG 4147
VST
HFC
TG
DSC
FTIR
XRD
compatibility
high energy materials
Opis:: A review of methods for testing the compatibility of high energy mixed components is presented. The advantages, deficiencies as well as the limitations of particular research methods are described based on selected applications reported in the literature. The most frequently used techniques for testing compatibility are thermal methods, such as DSC, TG, VST, and HFC, in which the processes of decomposition of samples conditioned at elevated temperatures are analyzed. Examples of non-thermal methods for testing compatibility, such as DFT, FTIR or XRD are reported in the literature as well. Incompatibility may lead to thermal detonation, which can occur even at low degrees of conversion. For this reason, the authors focused specifically on the limitations of methods for determining compatibility at high degrees of conversion. The methods allowing testing of compatibility based on an analysis for the initial decomposition stage are recommended.
Źródło:: Central European Journal of Energetic Materials; 2021, 18, 4; 512--528
1733-7178
Pojawia się w:: Central European Journal of Energetic Materials
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Preparation and investigation of the properties of hexanitrohexaazatricyclododecanidione (HHTDD)
Otrzymywanie i badanie właściwości heksanitroheksaazatricyklododekanidionu (HHTDD)
Autorzy:: Szala, Mateusz
Szymańczyk, Leszek
Powiązania:: https://bibliotekanauki.pl/articles/1065297.pdf
Data publikacji:: 2019
Wydawca:: Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
Tematy:: hexanitrohexaazatricyclododecanodione
high energy materials
high-nitrogen explosives
heksanitroheksaazatricyklododekanodion
materiały wysokoenergetyczne
wysokoazotowe materiały wybuchowe
Opis:: Przedyskutowano literaturowe opisy metod otrzymywania heksanitroheksaazatricyklododekanodionu. Do badań eksperymentalnych wytypowano metodę najkorzystniejszą z punktu widzenia otrzymywania związku w skali laboratoryjnej. Wykonano pełną analizę strukturalną i jakościową produktu finalnego. Kalorymetrycznie wyznaczono ciepło spalania i na tej podstawie obliczono standardową entalpię tworzenia HHTDD. Określono wrażliwość materiału na bodźce mechaniczne (uderzenie i tarcie).
Źródło:: Materiały Wysokoenergetyczne; 2019, 11, 1; 76-82
2083-0165
Pojawia się w:: Materiały Wysokoenergetyczne
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: A Novel, Non-invasive Method for the Detection of Combustion Zone Propagation in Solid High Energy Materials by Means of Thermocouples and Pyrolytic Graphite
Autorzy:: Miszczak, M.
Świderski, W.
Panas, A. J.
Powiązania:: https://bibliotekanauki.pl/articles/358649.pdf
Data publikacji:: 2014
Wydawca:: Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
Tematy:: solid high energy materials
combustion zone propagation
average burning rate
thermocouples
pyrolytic graphite (pyrographite)
Opis:: This work presents a new, non-invasive method for the discrete detection of combustion zone propagation in high energy materials – pyrotechnic compositions – by means of thermocouples bonded to the external, side surface of a pyrolytic graphite (pyrographite) tube filled with the pyrotechnic composition and ignited at the one end by a CO2 laser. The thermocouples were positioned in a line parallel to the longitudinal axis of the pyrographite tube, which was used as a directional heat guide (thermal management) and a thermoresistant structure, enabling detection of the propagation of the combustion zone as a heat zone generated by the combustion, traveling on the outside surface of the pyrographite tube along its axis. Such a directional heat guidance was caused by the unique thermal conductivity anisotropy of pyrographite resulting in low thermal conductivity of the pyrographite tube along its axis and high thermal conductivity across the tube radius. The thermocouples detected passages of the outside heat zone that were equally time delayed in relation to the combustion zone inside the tube. Dividing the distance between the thermocouples by the time between their thermoelectric response to the same (corresponding) isotherm of the heat zone, gave the average burning rate of the high energy composition being tested over the distance between the thermocouples. The proposed procedure for burning rate determination was verified by numerical simulations.
Źródło:: Central European Journal of Energetic Materials; 2014, 11, 3; 417-431
1733-7178
Pojawia się w:: Central European Journal of Energetic Materials
Dostawca treści:: Biblioteka Nauki

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