Temat: materials - Prolib Integro

Skocz do pozycji: 1.

Tytuł:: Nanoscale Aluminum - Metal Oxide (Thermite) Reactions for Application in Energetic Materials
Autorzy:: Piercey, D. G.
Klapötke, T. M.
Tematy:: nano-aluminum
materials
thermites
energetic materials; Pokaż więcej
Wydawca:: Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
Powiązania:: https://bibliotekanauki.pl/articles/358693.pdf Link otwiera się w nowym oknie
Opis:: Energetic materials fnd use in both military and civilian applications, however many commonly used materials suffer from serious defciencies including toxicity and high sensitivity. Nanothermites exhibit vastly differing characteristics compared to their well known micron scale relatives and through the use of various preparatory chemical techniques can be tailored to have a wide spectra of chemical and energetic properties. This may allow use as superior replacements of conventional energetic materials in various applications.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 2.

Tytuł:: Microwave-Mediated Synthesis of Lead-Free Cesium Titanium Bromide Double Perovskite: A Sustainable Approach
Autorzy:: Echeverría-Arrondo, Carlos
Reyes-Francis, Emmanuel
López-Luke, Tzarara
Julián-López, Beatriz
Esparza, Diego
Mora-Seró, Iván
Turren-Cruz, Silver-Hamill
Morales-Masis, Monica
Soto-Montero, Tatiana
Wydawca:: American Chemical Society
Cytata wydawnicza:: Chem. Mater. 2024, 36, 3, 1728–1736. https://doi.org/10.1021/acs.chemmater.3c03108
Opis:: Theoretical studies have identified cesium titanium bromide (Cs2TiBr6), a vacancy-ordered double perovskite, as a promising lead-free and earth-abundant candidate to replace Pb-based perovskites in photovoltaics. Our research is focused on overcoming the limitations associated with the current Cs2TiBr6 syntheses, which often involve high-vacuum and high-temperature evaporation techniques, high-energy milling, or intricate multistep solution processes conducted under an inert atmosphere, constraints that hinder industrial scalability. This study presents a straightforward, low-energy, and scalable solution procedure using microwave radiation to induce the formation of highly crystalline Cs2TiBr6 in a polar solvent. This methodology, where the choice of the solvent plays a crucial role, not only reduces the energy costs associated with perovskite production but also imparts exceptional stability to the resulting solid, in comparison with previous reports. This is a critical prerequisite for any technological advancement. The low-defective material demonstrates unprecedented structural stability under various stimuli such as moisture, oxygen, elevated temperatures (over 130 °C), and continuous exposure to white light illumination. In summary, our study represents an important step forward in the efficient and cost-effective synthesis of Cs2TiBr6, offering a compelling solution for the development of eco-friendly, earth-abundant Pb-free perovskite materials.
Dostawca treści:: Repozytorium Centrum Otwartej Nauki

Artykuł

na półce

Skocz do pozycji: 3.

Tytuł:: Influence of Terfenol-D powder volume fraction in epoxy matirx composites on their magnetomechanical properies
Autorzy:: Mech, R.
Kaleta, J.
Tematy:: magnetostriction
magnetic properties
smart materials
active materials; Pokaż więcej
Wydawca:: Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Powiązania:: https://bibliotekanauki.pl/articles/387154.pdf Link otwiera się w nowym oknie
Opis:: In this paper the investigations of magnetostriction as well as DC magnetic properties for composites doped with Terfenol-D particles are presented. All investigations were performed for the materials with 35%, 46% and 70% volume fraction of the Terfenol-D particles surrounded by epoxy matrix. Moreover, the bulk Terfenol-D alloy was tested. The obtained results show that the magnetization of the composite materials increases with increasing the volume fraction of Terfenol-D particles. Similar dependence as for magnetization was observed for the magnetostriction measurements. Although the magnetostriction of composite material is smaller than for solid Terfenol-D it is still tens of times bigger than in case of traditional magnetostrictive materials. Obtained results gives opportunity to use these materials for variety applications such as actuators and sensors.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 4.

Tytuł:: SCREENSHOTS AND COPYRIGHT
Autorzy:: Nowak, Danuta
Tematy:: authentic materials
copyright
materials' adaptation
exam preparation; Pokaż więcej
Wydawca:: Uniwersytet Marii Curie-Skłodowskiej w Lublinie. IATEFL Poland Computer Special Interest Group
Powiązania:: https://bibliotekanauki.pl/articles/955903.pdf Link otwiera się w nowym oknie
Opis:: The present article attempts to show how important and easy it is to use authentic material in the classroom. However, the teacher who copies news reports from the Internet may infringe the copyright law. The article offers a comparative analysis of copyright laws in Common Law countries and the EU countries in relation to fair use. The article tries to determine whether teachers may copy, what teachers may copy, what to do with authentic materials as screenshots and how to adapt them to TELC, KET and PET examination tasks. The Author suggests some reading comprehension and grammar development activities designed using Paint and screenshots.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 5.

Tytuł:: Modern building materials
Autorzy:: Sadowska, Beata
Jimenez, José Ramón
Fernández Rodriguez, José María
Moreno Pérez, Fátima
Roldán Cañas, José
Rivas-Sánchez, Yair A.
Tematy:: Building materials
environment
traditional material
industrialized materials; Pokaż więcej
Wydawca:: Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Powiązania:: https://bibliotekanauki.pl/chapters/31029469.pdf Link otwiera się w nowym oknie
Opis:: Decisions taken both in the design process of buildings and their modernization should comply with basic requirements, such as: strength and stability, resistance to dampness and water, resistance to fire, heat insulation, sound insulation, durability, comforts and conveniences. Building materials should not have harmful effects on human health. In their production, factors that destroy the natural environment (e.g. freons that destroy the ozone layer in the atmosphere) should not be used. The aspects of utilization, safe storage and recycling possibilities are also important. Another criterion for choosing material solutions is their availability as well as local traditions. However, the deciding factor is usually the economic aspect (costs of materials, construction and assembly).
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 6.

Tytuł:: Packaging Materials in General Technoeducation
Autorzy:: STOFFA, Ján
Tematy:: general technoeducation
packaging materials
packaging materials in general technoeducation
properties of packaging materials; Pokaż więcej
Wydawca:: Uniwersytet Rzeszowski
Powiązania:: https://bibliotekanauki.pl/articles/456010.pdf Link otwiera się w nowym oknie
Opis:: The study points to the unused possibility of including the theme of packaging materials in the educational process of general technoeducation It defines the concept of packaging materials in the narrow and broad sense It also characterizes the range of packaging materials used, their advantages and disadvantages. Also it points to specific aspects of packaging materials, in particular to the aspect of economic, health and hygiene, safety, aesthetic and environmental. It also addresses the issue of the impact of external factors on the properties of packaging materials. Epistemological value of packaging materials is illustrated in the case of paper as the most widely used packaging material. On the topic of the paper also some problematic questions are presented.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 7.

Tytuł:: Critical, Strategic and Deficit Raw Materials in the Waste of Electrical and Electronic Equipment and in Batteries and Accumulators
Autorzy:: Witkowska-Kita, Beata
Biel, Katarzyna
Blaschke, Wiesław
Orlicka, Anna
Tematy:: waste electrical and electronic equipment (WEEE)
batteries and accumulators
recyclable materials
critical raw materials
strategic raw materials
deficit raw materials; Pokaż więcej
Wydawca:: Polskie Towarzystwo Przeróbki Kopalin
Powiązania:: https://bibliotekanauki.pl/articles/318573.pdf Link otwiera się w nowym oknie
Opis:: This article presents the waste electrical and electronic equipment and batteries and accumulators as a potential source of critical, strategic and deficit raw materials. The dominant types of waste obtained after the disassembly of used electrical and electronic equipment are plastics: polypropylene (PP), acrylonitrile-butadiene-styrene (ABS), polystyrene (PS) and teflon and metals. These metals include: magnesium, cobalt, antimony and tantalum (critical raw materials), aluminum, nickel, iron and zinc (strategic raw materials) as well as copper and silver (deficit resources), as well as lead, tin, gold and cadmium. Batteries and accumulators are a source, among others metals such as: nickel and zinc (strategic raw materials), manganese and lithium (deficit resources), aluminum (strategic raw material), and cadmium, lead. The article presents the results of analysis of the material composition of the waste electrical and electronic equipment conducted at the Institute of Mechanised Construction and Rock Mining. It also presents the level of imports and exports of waste and scrap-metal that are the subject of this article. In addition, the article presents a source of information about waste and recycled materials.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 8.

Tytuł:: Spis treści 1976 nr 3(15) = Contents 1976 nr 3(15)
Materiały Elektroniczne 1976 nr 3(15)
Spis treści 1976 nr 3(15)
Materiały Elektroniczne 1976 nr 3 (15)
Wydawca:: Wydaw.Przemysłu Maszynowego "WEMA"
Wydaw. Przemysłu Maszynowego "WEMA"
Powiązania:: Materiały Elektroniczne
Electronic Materials
Opis:: 3 s.
3 s. ; 24 cm.
Dostawca treści:: RCIN - Repozytorium Cyfrowe Instytutów Naukowych

Książka

na półce

Skocz do pozycji: 9.

Tytuł:: Lignin-Based Composite Materials for Photocatalysis and Photovoltaics
Autorzy:: Khan, Ayesha
Nair, Vaishakh
Gläser, Roger
Colmenares, Juan Carlos
Wydawca:: Springer
Cytata wydawnicza:: Khan A, Nair V, Colmenares JC, Gläser R. Lignin-Based Composite Materials for Photocatalysis and Photovoltaics. Top Curr Chem (Cham). 2018 May 2;376(3):20. doi: 10.1007/s41061-018-0198-z.
Opis:: Depleting conventional fuel reserves has prompted the demand for the exploration of renewable resources. Biomass is a widely available renewable resource that can be valorized to produce fuels, chemicals, and materials. Among all the fractions of biomass, lignin has been underutilized. Due to its complex structure, recalcitrant nature, and heterogeneity, its valorization is relatively challenging. This review focuses on the utilization of lignin for the preparation of composite materials and their application in the field of photocatalysis and photovoltaics. Lignin can be used as a photocatalyst support for its potential application in photodegradation of contaminants. The interaction between the components in hybrid photocatalysts plays a significant role in determining the photocatalytic performance. The application of lignin as a photocatalyst support tends to control the size of the particles and allows uniform distribution of the particles that influence the characteristics of the photocatalyst. Lignin as a semiconductive polymer dopant for photoanodes in photovoltaic cells can improve the photoconversion efficiency of the cell. Recent success in the development of lignosulfonates dopant for hole transport materials in photovoltaics will pave the way for further research in lignin-based high-performance organic electronic devices.
This publication is part of a project that has received funding from the European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement No. 711859 and from the financial resources for science in the years 2017–2021 awarded for the implementation of an international co-financed project. Prof. Dr. J.C. Colmenares and Dr. V. Nair are very grateful for the partial support from the National Science Centre in Poland within Sonata Bis Project No. 2015/18/E/ST5/00306. Roger Gläser gratefully acknowledges support from the Leipzig Graduate School of Natural Sciences: Building with Molecules and Nano-objects as well as from the Research Academy Leipzig.
Dostawca treści:: Repozytorium Centrum Otwartej Nauki

Artykuł

na półce

Skocz do pozycji: 10.

Tytuł:: Short-range correlations in magnetite above the Verwey temperature
Autorzy:: Bosak, Alexey
Oleś, Andrzej
Chernyshov, Dmitry
Parliński, Krzysztof
Krisch, Michael
Kozłowski, Andrzej
Hoesch, Moritz
Piekarz, Przemysław
Tacon, Mathieu Le
Opis:: Magnetite, $Fe_{3}O_{4}$, is the first magnetic material discovered and utilized by mankind in Ancient Greece, yet it still attracts attention due to its puzzling properties. This is largely due to the quest for a full and coherent understanding of the Verwey transition that occurs at $T_{V}$ = 124 K and is associated with a drop of electric conductivity and a complex structural phase transition. A recent detailed analysis of the structure, based on single crystal diffraction, suggests that the electron localization pattern contains linear three-Fe-site units, the so-called trimerons. Here we show that whatever the electron localization pattern is, it partially survives up to room temperature as short-range correlations in the high-temperature cubic phase, easily discernible by diffuse scattering. Additionally, $\it{ab initio}$ electronic structure calculations reveal that characteristic features in these diffuse scattering patterns can be correlated with the Fermi surface topology.
Dostawca treści:: Repozytorium Uniwersytetu Jagiellońskiego

Artykuł

na półce

Informacja

Wyszukujesz frazę "materials" wg kryterium: Temat