Results 41 to 50 of about 187,352 (298)

Quasi-periodic acceleration of electrons in the flare on 2012 July 19 [PDF]

, 2016
Quasi-periodic pulsations (QPPs) of nonthermal emission in an M7.7 class flare on 2012 July 19 are investigated with spatially resolved observations at microwave and HXR bands and with spectral observations at decimetric, metric waves.
Gao, Guannan, Huang, Jing, Kontar, Eduard P., Nakariakov, Valery M.   +3 more
core   +1 more source

Interaction of MgO Recyclate‐Based Cermet Anode With KF‐AlF3‐Al2O3 at 800°C During Laboratory Scale Aluminum Molten Salt Electrolysis

Advanced Engineering Materials, EarlyView.
A carbon‐free, as‐sintered MgO–steel cermet anode, fabricated via cold isostatic pressing using MgO–C refractory recyclate, was evaluated under laboratory‐scale K‐cryolite electrolysis at 800°C. Operation at this reduced temperature, combined with the electrolyte's limited electrical conductivity, led to an increase in cell voltage.
Farhan Hossain, Alexander Adamczyk, Felipe Alejandro Garcia Paz, Serhii Yaroshevskyi, Felix Drechsler, Daniel Vogt, Christos G. Aneziris, Alexandros Charitos   +7 more
wiley   +1 more source

Ar-O$_2$ plasma of resonant UHF discharge for chitosan's films processed

Discrete and Continuous Models and Applied Computational Science
This article explores the modification of chitosan films by treating Ar-O$_2$ with microwave plasma. The main idea is to use resonant plasma generation methods to treat chitosan films. Spectral and energy characteristics of microwave plasma are obtained.
Andrey V. Artemyev, Andrey S. Kritchenkov   +1 more
doaj   +1 more source

In Situ Spectroscopic Analysis of the Carbothermal Reduction Process of Iron Oxides during Microwave Irradiation

Metals, 2018
The effects of microwave plasma induction and reduction on the promotion of the carbothermal reduction of iron oxides (α-Fe2O3, γ-Fe2O3, and Fe3O4) are investigated using in situ emission spectroscopy measurements during 2.45 GHz microwave processing ...
Jun Fukushima, Hirotsugu Takizawa
doaj   +1 more source

Impact of Pre‐Oxidation Treatments on a Recycled MgO/Steel‐Composite as Carbon Free Anode in Aluminum‐Electrolysis Environments

Advanced Engineering Materials, EarlyView.
Cermets (60 vol.% AISI 316L stainless steel, 40 vol.% recycled MgO), intended for use in aluminum electrolysis, were pre‐oxidized in three furnaces with different heating technologies and subjected to a cryolite corrosion test. The different atmospheres influenced the formation of oxide layers, which in turn affected corrosion resistance and ...
Patricia Kaiser, Felix Drechsler, Nora Brachhold, Florian Kerber, Christos G. Aneziris   +4 more
wiley   +1 more source

Synthesis of Multiwalled Carbon Nanotubes on Stainless Steel by Atmospheric Pressure Microwave Plasma Chemical Vapor Deposition

Applied Sciences, 2020
In this paper, we synthesize carbon nanotubes (CNTs) by using atmospheric pressure microwave plasma chemical vapor deposition (AMPCVD). In AMPCVD, a coaxial plasma generator provides 200 W 2.45 GHz microwave plasma at atmospheric pressure to decompose ...
Dashuai Li, Ling Tong, Bo Gao
doaj   +1 more source

Nanocarbon Composites for Non-Incandescent Microwave Magnetrons and Subterahertz Ranges [PDF]

Известия Саратовского университета. Новая серия: Физика, 2020
Background and Objectives: Development of techniques and investigation of secondary emission properties of film diamond graphite nanocomposites obtained in different modes of microwave plasma-chemical deposition were performed for sources of ...
Yafarov, Ravil' Kiashshafovich, Шабунин , Никита Олегович, Shanygin, Vitaliy Iakovlevich, Zakharevich, Andrey Mikhailovich   +3 more
doaj   +1 more source

Microwave technique measures plasma characteristics [PDF]

, 1965
Plasma electron density and temperature distribution are measured by passing a high frequency millimeter wave through plasma. Variations in density and temperature are determined by measuring insertion loss as the plasma travels between the microwave ...
Leonard, W. F.
core   +1 more source

Experimental Study of Microwave Power Limitation in a Microstrip Transmission Line Using a DC Plasma Discharge for Preionization [PDF]

, 2018
Plasma-based microwave power limitation is experimentally investigated in a microstrip transmission line integrating a direct current (dc) plasma discharge for preionization.
Callegari, Thierry, Liard, Laurent, Pascal, Olivier, Pascaud, Romain, Simon, Antoine   +4 more
core   +3 more sources

Electroactive Metal–Organic Frameworks for Electrocatalysis

Advanced Functional Materials, EarlyView.
Electrocatalysis is crucial in sustainable energy conversion as it enables efficient chemical transformations. The review discusses how metal–organic frameworks can revolutionize this field by offering tailorable structures and active site tunability, enabling efficient and selective electrocatalytic processes.
Irena Senkovska, Yutong Luo, Ruyan Zhao, Jianjun Zhang, Mingchao Wang, Xinliang Feng, Eike Brunner, Stefan Kaskel   +7 more
wiley   +1 more source