نتایج جستجو برای: refractory metal compounds

تعداد نتایج: 469879  

Journal: :Johnson Matthey Technology Review 2017

Iron aluminide intermetallic compound, including compounds that have great features is that it's so great properties, due to its increasing use in industry is different. In thiswork, structural and dynamic properties of FeAl compounds including the structure of energybands, density of states, phonon and thermal properties in two-phase structures regularly evaluated and calculated. Calculations ...

2004
Shozo Yanagida Yuji Wada Tetsushi Yamamoto Takao Sakata Hirotaro Mori Masaki Goto Shingo Hibino

Nan-sized inorganic particles having characteristic morphology and narrow size-distribution have attracted attention due to their potential applications as functional materials, i.e., catalysts, magnetic materials, conducting inks, and ferrofluids. Various preparation and stabilization methods of nano-sized metal particles, metal oxide particles, and metal sulfide particles have been reported. ...

Journal: :Applied and environmental microbiology 2004
Mikael Courbot Laurent Diez Roberta Ruotolo Michel Chalot Pierre Leroy

Molecular and cellular mechanisms underlying the sustained metal tolerance of ectomycorrhizal fungi are largely unknown. Some of the main mechanisms involved in metal detoxification appear to involve the chelation of metal ions in the cytosol with thiol-containing compounds, such as glutathione, phytochelatins, or metallothioneins. We used an improved high-performance liquid chromatography meth...

Journal: :Inorganic chemistry 2002
John P Fackler

Inorganic chemistry became a passion for me as a graduate student in the 1950s. It was exciting to be part of the renaissance of the discipline, and I am pleased to have contributed to its strength. Physical concepts applied to the understanding of the properties of transition metal compounds guided our work initially. In the 1970s, probably as a direct result of the world abandoning the gold s...

2015
Yanqing Shen Artem R. Oganov Guangri Qian Jin Zhang Huafeng Dong Qiang Zhu Zhongxiang Zhou

Using ab initio evolutionary simulations, we predict the existence of five novel stable Li-N compounds at pressures from 0 to 100 GPa (Li13N, Li5N, Li3N2, LiN2, and LiN5). Structures of these compounds contain isolated N atoms, N2 dimers, polyacetylene-like N chains and N5 rings, respectively. The structure of Li13N consists of Li atoms and Li12N icosahedra (with N atom in the center of the Li1...

Journal: :Frontiers in bioscience : a journal and virtual library 2003
Elias Papaconstantinou Anastasia Hiskia Aristidis Troupis

Polyoxometalates (POM) have a rich and promising photochemical behavior. Upon illumination at the O M CT band (i.e., in UV and near-visible area) become powerful oxidizing reagents able to oxidize various organic compounds. In the process POM undergo stepwise reduction accumulating electrons that can be subsequently delivered, via thermal reactions to a variety of oxidants. This way a great var...

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