نتایج جستجو برای: compound materials

تعداد نتایج: 557626  

Journal: :IOP Conference Series: Materials Science and Engineering 2016

پایان نامه :0 1374

having conducted the experiment and analysed the data, the researcher computed the groups mean scores and variances for the test relating to the research question. as the final atep, a t-test was conodonted for the hypothesis. as noted earlier, the significance level was determined at .05 and .01 respectively. the observed t-value was higher than the critical t-value at. 5 and .01 levels. conse...

Journal: :Angewandte Chemie 2014
Xiang Liu Hai-Qian Li Sen Ye Yong-Mei Liu He-Yong He Yong Cao

The azo linkage is a prominent chemical motif which has found numerous applications in materials science, pharmaceuticals, and agrochemicals. Described herein is a sustainable heterogeneous-gold-catalyzed synthesis of azo arenes. Available nitroarenes are deoxygenated and linked selectively by the formation of N=N bonds using molecular H2 without any external additives. As a result of a unique ...

2004
Manoj Khanal Wolfgang Schubert Jürgen Tomas

Particle compound material is the composition of different particles with inhomogeneous and non-uniform properties. Particle compound material is the most complicated engineering material whose properties vary according to the applications, method of manufacturing and ratio of its ingredients. The quasi-homogeneous materials like building materials and constituents of tablets, pellets etc are s...

2012
Urmila Berar

Chalcones are a class of α,β-unsaturated carbonyl compounds that form the central core for a variety of naturally occurring biologically active compounds. They exhibit tremendous potential to act as a pharmacological agent. Besides their various pharmacological activities, chalcones have been explored for different optical applications including second harmonic generation materials in non-linea...

Journal: :Chemical communications 2015
Yangming Lin Shuchang Wu Wen Shi Bingsen Zhang Jia Wang Yoong Ahm Kim Morinobu Endo Dang Sheng Su

Exploring the potential catalytic applications of boron-doped carbon materials is a fascinating challenge. Here we describe that boron-doped onion-like carbon and carbon nanotubes as metal-free catalysts exhibit excellent catalytic activity and stability in nitroarene reduction under a stoichiometric amount of reductant.

Journal: :Physical review letters 2015
Yoshiyuki Miyamoto Hong Zhang Takehide Miyazaki Angel Rubio

We propose a transient interlayer compression in two-dimensional compound materials by using an intense IR laser resonant with the out-of-plane optical phonon mode (A(2u) mode). As a test case, we studied bilayer hexagonal boron nitride (h-BN), which is one of the compound layered materials. Excited state molecular dynamics calculations using time-dependent density functional theory show an 11....

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