Multicenter organic redox systems composed of bis(1,4-dihydronicotinamides): optimal conformation for intramolecular electronic interaction

1982 ◽  
Vol 104 (19) ◽  
pp. 5189-5197 ◽  
Author(s):  
Yukito Murakami ◽  
Yasuhiro Aoyama ◽  
Junichi Kikuchi ◽  
Koji Nishida
Keyword(s):  
Electronic Interaction ◽  
Redox Systems ◽  
Optimal Conformation

Redox Systems, Antioxidants and Sarcopenia

2018 ◽  
Vol 19 (7) ◽  
pp. 643-648 ◽  
Author(s):  
Bertrand Fougère ◽  
Gabor Abellan van Kan ◽  
Bruno Vellas ◽  
Matteo Cesari
Keyword(s):  
Redox Systems

Application of information and communication technologies in modern Russian cadastral system

2019 ◽  
Vol 944 (2) ◽  
pp. 57-63
Author(s):  
V.A. Pavlova ◽  
E.L. Uvarova
Keyword(s):  
Real Estate ◽  
Information And Communication Technologies ◽  
Communication Technologies ◽  
Software Systems ◽  
Electronic Interaction ◽  
Online Services ◽  
Global Trends ◽  
Additional Information ◽  
Information And Communication ◽  
Cadastral System

The authors describe modern trends in development of the cadastral system. The main features of the procedure of cadastral registration and software systems that act as accounting and registration of automated databases are highlighted. The technological process of maintaining the unified state register of real estate is analyzed in detail. The modern system of information electronic interaction in the real estate register is designated. The role of information and communication technologies in the Russian cadastral system is shown. The authors propose a classification of online services of Rosreestr in a number of ways. The fourth group of online services is allocated as the most promising as it provides opportunities to obtain additional information at the common activity fields of different Executive authorities. The authors conclude that changes in the cadastral system of the Russian Federation are greatly influenced by global trends which in turn are aimed at expanding the functions of the cadastre as an information basis of land management.

The effect of solvation by acetone on the basicity of silylalkylamines

1979 ◽  
Vol 44 (9) ◽  
pp. 2828-2831 ◽  
Author(s):  
Zlata Papoušková ◽  
Vlasta Fialová ◽  
Václav Chvalovský
Keyword(s):  
Potentiometric Titration ◽  
Electronic Interaction ◽  
Relative Basicity

The relative basicity of fifteen methylethoxysilylalkylamines of the type (CH3)3-m(C2H5O)m.Si(CH2)nNH2 in acetone has been studied by potentiometric titration. For n 1 the basicity increases with increasing m, which is likely due to increasing electronic interaction of the oxygen of acetone with the silicon of silylalkylamines. The basicity of silylmethylamines (n = 1) changes nonsystematically, probably as a consequence of the competing action of opposite effects.

Polymerization of acrylonitrile initiated by peroxomonosulphate-thiols redox systems

1990 ◽  
Vol 55 (8) ◽  
pp. 2001-2007
Author(s):  
Gurusamy Manivannan ◽  
Pichai Maruthamuthu
Keyword(s):  
Ionic Strength ◽  
Thermodynamic Parameters ◽  
Thermal Polymerization ◽  
Reaction Scheme ◽  
Degree Of Polymerization ◽  
Reducing Agent ◽  
Redox Systems ◽  
Temperature Range ◽  
Rate Of Polymerization

Aqueous thermal polymerization of acrylonitrile (AN) initiated by peroxomonosulphate (HSO5-, PMS)-thiolactic acid (TLA) and PMS-thiomalic acid (TMA) redox systems has been carried out in the temperature range 30-50 °C. The effect of concentration of monomer, initiator, reducing agent, H+, and ionic strength on rate of polymerization, Rp, has been investigated under deaerated conditions. The Rp has been found to depend on, Rp ~ [AN]01.5 [PMS]0.5 [TLA]0.5 in PMS-TLA system and, Rp ~ [AN]02.0 [PMS]1.0 [TMA]0 in PMS-TMA system. The degree of polymerization (Xn) values and thermodynamic parameters have been evaluated. Suitable reaction scheme has been proposed and expressions for Rp and Xn have been obtained.

scholarly journals Mitochondrial redox systems as central hubs in plant metabolism and signalling

2021 ◽  
Author(s):  
Olivier Van Aken
Keyword(s):  
Stress Responses ◽  
Plant Mitochondria ◽  
Nuclear Gene ◽  
Tca Cycle ◽  
Cellular Damage ◽  
Future Research ◽  
Antioxidant Systems ◽  
Plant Metabolism ◽  
Redox Systems ◽  
Glutathione Cycle

Abstract Plant mitochondria are indispensable for plant metabolism and are tightly integrated into cellular homeostasis. This review provides an update on the latest research concerning the organisation and operation of plant mitochondrial redox systems, and how they affect cellular metabolism and signalling, plant development and stress responses. New insights into the organisation and operation of mitochondrial energy systems such as the tricarboxylic acid (TCA) cycle and mitochondrial electron chain (mtETC) are discussed. The mtETC produces reactive oxygen and nitrogen species, which can act as signals or lead to cellular damage, and are thus efficiently removed by mitochondrial antioxidant systems, including Mn-superoxide dismutase, ascorbate-glutathione cycle and thioredoxin-dependent peroxidases. Plant mitochondria are tightly connected with photosynthesis, photorespiration and cytosolic metabolism, thereby providing redox-balancing. Mitochondrial proteins are targets of extensive post-translational modifications, but their functional significance and how they are added or removed remains unclear. To operate in sync with the whole cell, mitochondria can communicate their functional status via mitochondrial retrograde signalling to change nuclear gene expression, and several recent breakthroughs here are discussed. At a whole organism level, plant mitochondria thus play crucial roles from the first minutes after seed imbibition, supporting meristem activity, growth and fertility, until senescence of darkened and aged tissue. Finally, plant mitochondria are tightly integrated with cellular and organismal responses to environmental challenges such as drought, salinity, heat and submergence, but also threats posed by pathogens. Both the major recent advances and outstanding questions are reviewed, which may help future research efforts on plant mitochondria.

Assembly of thin mesoporous titania films and their effects on the voltammetry of weakly adsorbing redox systems

2005 ◽  
Vol 579 (2) ◽  
pp. 267-275 ◽  
Author(s):  
Katy J. McKenzie ◽  
Pauline M. King ◽  
Frank Marken ◽  
Catherine E. Gardner ◽  
Julie V. Macpherson
Keyword(s):  
Mesoporous Titania ◽  
Redox Systems ◽  
Titania Films
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