Results 31 to 40 of about 829,048 (262)

Honey: Chemical Composition, Stability and Authenticity [PDF]

Foods, 2019
This Special Issue contains innovative research papers on the characterization, chemical composition and physical properties of honey. This constitutes very useful information to avoid frauds and to guarantee the authenticity of this food product. The knowledge of the particularities of honey is increasingly demanded by beekeepers and consumers, and ...
Olga Escuredo, M. Carmen Seijo
openaire   +4 more sources

First-Principles Modeling of Atomic Structure and Chemical and Optical Properties of β-C₃N₄

C, 2019
In our work, we report the results of first-principles modeling of optical and chemical properties of β-C3N4 in bulk (pristine and defected), surface, and nanoclusters.
Xue Lei, Danil W. Boukhvalov, Anatoly F. Zatsepin   +2 more
doaj   +1 more source

Sr Substituted La_2−xSr_xNi_0.8Co_0.2O_4+δ (0 ≤ x ≤ 0.8): Impact on Oxygen Stoichiometry and Electrochemical Properties

Energies, 2022
Lanthanide nickelate Ln2NiO4+δ (Ln = La, Pr, or Nd) based mixed ionic and electronic conducting (MIEC) materials have drawn significant attention as an alternative oxygen electrode for solid oxide cells (SOCs).
Ifeanyichukwu D. Unachukwu, Vaibhav Vibhu, Izaak C. Vinke, Rüdiger-A. Eichel, L. G. J. (Bert) de Haart   +4 more
doaj   +1 more source

Variation of soil organic matter depends on light-fraction organic matter under long-term monocropping of different crops

Plant, Soil and Environment, 2021
Cultivating crops influences soil organic matter (SOM), but the effect of different crops remains unclear, particularly under long-term monocropping.
Futao Zhang, Yunfa Qiao, Xiaozeng Han, Bin Zhang   +3 more
doaj   +1 more source

Determination of chemical stability of propellants using the vacuum stability test method [PDF]

Scientific Technical Review, 2016
This paper includes the results of the examination of the single base propellants, double base propellants and double base rocket propellants with the Czech Vacuum Stability Test STABIL.
Fidanovski Bojana, Dimić Mirjana, Milojković Aleksandar, Rodić Vesna   +3 more
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Recent advances in synthesis and application of perovskite quantum dot based composites for photonics, electronics and sensors

Science and Technology of Advanced Materials, 2020
In recent years, halide perovskite quantum dots (HP-QDs) based composites have been widely developed and used in various applications owing to their unique photonic, electronic and mechanical properties, as well as high stability to water, oxygen, heat ...
Yaxin Wang, Guanglong Ding, Jing-Yu Mao, Ye Zhou, Su-Ting Han   +4 more
doaj   +1 more source

Optimisation of Polyphenols Extraction from Wild Bilberry Leaves—Antimicrobial Properties and Stability Studies

Molecules, 2023
Polyphenolic extracts from natural sources have received great interest due to their beneficial properties for human health. A method to reduce their variability is to use the design of experiments which allows a limited number of experiments to be ...
Ana-Maria Brezoiu, Mihaela Deaconu, Raul-Augustin Mitran, Ana-Maria Prelipcean, Cristian Matei, Daniela Berger   +5 more
doaj   +1 more source

Modeling glass-ceramic enamel properties [PDF]

Journal of the Serbian Chemical Society, 2002
The results of an investigation of the chemical and thermal characteristics of glass-ceramic enamels, derived from the Li2O-Na2O-Al2O3-TiO2-SiO2 system obtained by employing the methods of mathematical experiment planning, are presented in this paper ...
Gavrilovski Dragica S., Blagojević Nikola S., Gavrilovski Milorad P.   +2 more
doaj   +1 more source

Binding and Degradation Reaction of Hydroxide Ions with Several Quaternary Ammonium Head Groups of Anion Exchange Membranes Investigated by the DFT Method

Molecules, 2022
Commercialization of anion exchange membrane fuel cells (AEMFCs) has been limited due to the chemical degradation of various quaternary ammonium (QA) head groups, which affects the transportation of hydroxide (OH−) ions in AEMs. Understanding how various
Mirat Karibayev, Bauyrzhan Myrzakhmetov, Sandugash Kalybekkyzy, Yanwei Wang, Almagul Mentbayeva   +4 more
doaj   +1 more source

A kinetic model for the consumption of stabilizer in single base gun propellants [PDF]

Journal of the Serbian Chemical Society, 2002
A suitable kinetic model for the consumption of stabilizer (diphenylamine) in single base gun propellants was investigated and successfully verified. The model assumes that a reaction of shifting order can be applied for the consumption of diphenylamine ...
MILOS FILIPOVIC, LJILJANA JELISAVAC
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