Thermal Non-Oxidative Aromatization of Light Alkanes Catalyzed by Gallium Nitride

2014 ◽  
Vol 53 (51) ◽  
pp. 14106-14109 ◽  
Author(s):  
Lu Li ◽  
Xiaoyue Mu ◽  
Wenbo Liu ◽  
Xianghua Kong ◽  
Shizhao Fan ◽  
...  
Keyword(s):  
Gallium Nitride ◽  
Light Alkanes ◽  
Oxidative Aromatization

Thermal Non-Oxidative Aromatization of Light Alkanes Catalyzed by Gallium Nitride

2014 ◽  
Vol 126 (51) ◽  
pp. 14330-14333 ◽  
Author(s):  
Lu Li ◽  
Xiaoyue Mu ◽  
Wenbo Liu ◽  
Xianghua Kong ◽  
Shizhao Fan ◽  
...  
Keyword(s):  
Gallium Nitride ◽  
Light Alkanes ◽  
Oxidative Aromatization

The Synthesis of New Selenium-containing Heterocycles by the Oxidation Reaction of 2,4-Diaryltetrahydro-4H-selenochromenes

2020 ◽  
Vol 24 (15) ◽  
pp. 1663-1668
Author(s):  
Dmitriy Yurievich Direnko ◽  
Boris Ivanovich Drevko ◽  
Yaroslav Borisovich Drevko
Keyword(s):  
Nucleophilic Substitution ◽  
Chlorine Atom ◽  
Oxidation Reaction ◽  
Heterocyclic Fragment ◽  
Oxidative Aromatization

We have explored the reactions of tetrahydro-4H-selenochromenes in the presence of phosphoric pentachloride, and synthesized new condensate aroylbenzoselenophenes. During the reactions, tetrahydro-4H-selenochromenes with phosphoric pentachloride underwent oxidative aromatization and nucleophilic substitution for a chlorine atom of one of the protons in the alicyclic fragment. Also, the narrowing of the heterocyclic fragment occurred as in synthesized selenium-containing compounds earlier transformed into the corresponding condensate aroylbenzoselenophenes.

ИССЛЕДОВАНИЕ НИТРИД-ГАЛЛИЕВЫХ МАЛОШУМЯЩИХ УСИЛИТЕЛЕЙ ПРИ КРИОГЕННЫХ ТЕМПЕРАТУРАХ

2020 ◽  
Vol 96 (3s) ◽  
pp. 347-352
Author(s):  
Д.Г. Алипа ◽  
В.В. Краснов ◽  
В.М. Минненбаев ◽  
А.В. Редька ◽  
Ю.В. Федоров
Keyword(s):  
Remote Sensing ◽  
Gallium Nitride ◽  
Millimeter Wave ◽  
Low Noise ◽  
Low Noise Amplifiers ◽  
Cryogenic Temperatures ◽  
Space Systems ◽  
Earth Remote Sensing ◽  
Hydrogen Level

В статье представлены результаты исследования возможности применения при криогенных температурах водородного уровня дискретных приборов и монолитных схем на основе нитрида галлия в составе малошумящих усилителей сантиметрового и миллиметрового диапазона длин волн для приемных устройств систем дистанционного зондирования Земли из космоса и в составе криогенных комплексов наблюдения космического пространства. The article presents the results of the research on the possibility of using discrete devices and gallium nitride monolithic circuits at the cryogenic temperatures of hydrogen level as part of low-noise amplifiers of centimeter and millimeter-wave bands used in receivers of Earth remote sensing space systems and in cryogenic systems for space observation.

Powerful Gallium Nitride Microwave Transistors on Silicon Substrates

2020 ◽  
Vol 15 (2) ◽  
pp. 169-174
Author(s):  
Yu. V. Khrapovitskaya ◽  
M. Y. Chernykh ◽  
I. S. Ezubchenko ◽  
Yu. V. Grishchenko ◽  
I. O. Mayboroda ◽  
...  
Keyword(s):  
Gallium Nitride ◽  
Silicon Substrates ◽  
Microwave Transistors
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