WAVE KINETICS OF POWDERS CONSOLIDATION BY HIGH-VOLTAGE ELECTRICAL PULSE

Author(s):  
E. G. GRIGORYEV ◽  
◽  
D. O. MOSKOVSKIKH ◽  
1993 ◽  
Vol 181 (1) ◽  
pp. 313-319
Author(s):  
WA Wuttke ◽  
MS Berry

Extracellular ATP appears to have a widespread role as a neurotransmitter or neuromodulator in mammals (Gordon, 1986; Burnstock, 1990), but little is known about any similar functions in invertebrates. During studies of the effects of cyclic nucleotides on electrically excitable salivary cells of the leech, we found that cyclic GMP produced a rapid (less than 1min) reduction of spike duration, suggesting an extracellular effect (Wuttke and Berry, 1991). We now show that micromolar concentrations of ATP (and higher doses of other nucleotides) also reduce spike duration, and that this is caused by depression of a specific voltage-dependent Ca2+ conductance. Selective modulation of Ca2+ current by external ATP has rarely been found, and the effect is also unusual because it changes the kinetics of inactivation rather than those of activation.


Author(s):  
V. T. Kazub ◽  
◽  
A. G. Koshkarova ◽  
S. P. Rudobashta ◽  
◽  
...  

2017 ◽  
Vol 76 (3) ◽  
pp. 567-574 ◽  
Author(s):  
S. K. Pankaj ◽  
Zifan Wan ◽  
William Colonna ◽  
Kevin M. Keener

High voltage atmospheric cold plasma (HVACP) is a novel, non-thermal technology which has shown potential for degradation of various toxic components in wastewater. In this study, HVACP was used to examine the degradation kinetics of methyl red, crystal violet and fast green FCF dyes. HVACP discharge was found to be a source of reactive nitrogen and oxygen species. High voltage application completely degraded all dyes tested in less than 5 min treatment time. Plasma from modified gas (∼65% O2) further reduced the treatment time by 50% vs. plasma from dry air. First order and Weibull models were fitted to the degradation data. The Weibull model was found better in explaining the degradation kinetics of all the treated dyes.


2019 ◽  
Vol 7 (9) ◽  
pp. 4705-4713 ◽  
Author(s):  
Peiyu Hou ◽  
Feng Li ◽  
Yangyang Wang ◽  
Jiangmei Yin ◽  
Xijin Xu

A nanoscale cobalt gradient substitution is introduced to suppress the P2–O2 phase transition and improve the Na+ kinetics of high-voltage P2-Na2/3[Ni1/3Mn2/3]O2 cathodes for sodium-ion batteries.


1992 ◽  
Vol 40 (11) ◽  
pp. 1412-1420 ◽  
Author(s):  
Sheshakamal Jayaram ◽  
G. S. P. Castle ◽  
Argyrios Margaritis

2021 ◽  
Vol 288 ◽  
pp. 01088
Author(s):  
Aleksandr V. Golenishchev-Kutuzov ◽  
Vadim A. Golenishchev-Kutuzov ◽  
Dmitry A. Ivanov ◽  
Anton V. Semennikov ◽  
Tatyana G. Galieva

Based on the research of the main causes of dielectric elements premature aging and electrical destruction of primary dielectric elements in high voltage electrical equipment the complex method for remote monitoring of said electrical equipment has been developed. The developed mobile diagnostic device is allowing detection and periodic control of the most dangerous defects. The set of diagnostic parameters of defects was experimentally obtained by using three physical methods (electromagnetic, optical, and acoustic), and allows to inspect the origin and development of defects, and to determine residual life of dielectric elements with a sufficient degree of reliability. The researched characteristics of the kinetics of reduction in operating parameters of polymer insulators permitted the development of the detection of accelerated increase in defects under the influence of ultra-large partial discharges.


2019 ◽  
Vol 61 (6) ◽  
pp. 1090
Author(s):  
К.Ф. Миннебаев ◽  
Э.И. Рау ◽  
А.А. Татаринцев

A complex setup for measuring the kinetics of high-voltage potentials of bulk dielectrics charging under irradiated of ions Ar+ with medium energies has been created. Complex measurements of ion-emission characteristics, accumulated charges and surface charging potential showed effective charging to high positive potentials. The measured surface potentials is close in value to the potential of the ion gun. It is assumed that at the early stage of charging in the process of emission, sputtered ions dominate, and in the final stage of irradiation – backscattered. The reported study was funded by RFBR according to the research project № 18-02-00813A


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