نتایج جستجو برای: oxidation behavior

تعداد نتایج: 731746  

Journal: :Journal of the American Ceramic Society 2020

Journal: :Journal of Advanced Ceramics 2021

Abstract SiBN fibers are one of the most admirable microwave-transparent reinforced materials for high Mach number aircrafts. Currently, detailed high-temperature oxidation behavior has not been studied yet. In this work, we with different boron contents at temperature range 1000–1400 °C in air. started to be oxidized 1100 °C, Si 3 N 4 and BN phase SiO 2 B O , respectively. Due gasification esc...

Journal: :Oxidation of Metals 2021

The aircraft industry is always looking for improved efficiency through higher in-service engine temperatures and lighter structures. Titanium-based alloys are good candidates such applications because of their high specific strength. However, when exposed to high-temperature oxidizing environments, a large amount dissolved oxygen can be found in beneath the growing oxide scale, possibly leadin...

پایان نامه :دانشگاه رازی - کرمانشاه - دانشکده ادبیات و علوم انسانی 1393

in recent years, there has been a growing interest among researchers to investigate the relationship betweenteacher self-efficacy and classroom behavior management, especially students misbehavior. therefore, this study aimed to comparatively investigate english and arabic teachers’ use of different behavior managementstrategies, their self-efficacy, and their success in an iranian context. th...

Electrochemical behavior of I-hydroxypyridine-2-thione and its vanadium complex is studied using polarographic techniques. Polarograms of ligand and that of the complex is shown with diffusion characteristics of the waves. Cyclic voltagram of thione is investigated which shows that a reversible oxidation reduction of one electron process is taking place. PKa of the thione is found to be in ...

Journal: :Journal of the American Chemical Society 2010
Alexander B Nepomnyashchii Sangik Cho Peter J Rossky Allen J Bard

Electrochemistry and electrogenerated chemiluminescence (ECL) of selected substituted BODIPY (4,4-difluoro-4-bora-3a,4a-diaza-s-indacene) dyes have been studied. The location and nature of substituents on positions 1-8 are important in predicting the behavior, and especially the stability, of the radical ions formed on electron transfer. Dyes with unsubstituted positions 2, 6, and 8 show a kine...

Journal: :Analytical sciences : the international journal of the Japan Society for Analytical Chemistry 2014
Yumi Yoshida Junya Uchida Shotaro Nakamura Satoshi Yamaguchi Kohji Maeda

This article reviews the development of a thin-layer electrolysis cell with both a thin aqueous phase and a thin organic phase for ion transfer at the liquid|liquid interface for the absolute determination of a redox-inactive ion. In particular, an improvement of the cell performance by using a conducting polymer-coated electrode in the organic phase is discussed. The applicability of the thin-...

Journal: :Organic letters 2005
J Sivaguru Hideaki Saito Thomas Poon Toma Omonuwa Roberto Franz Steffen Jockusch Catherine Hooper Yoshihisa Inoue Waldemar Adam Nicholas J Turro

[reaction: see text]. Oxazolidinone-functionalized enecarbamates show contrasting behavior upon oxidation by singlet oxygen and by ozone. The observed stereoselectivity difference indicates that the oxidation with ozone is subject to classic steric effects, whereas the very high selectivity in the photooxidation with singlet oxygen is derived from vibrational deactivation.

Journal: :Chemical communications 2011
Derek J Wasylenko Chelladurai Ganesamoorthy Javier Borau-Garcia Curtis P Berlinguette

The pH-dependent electrochemical behavior for a Co(II) complex, [Co(Py5)(OH(2))](ClO(4))(2) (1; Py5 = 2,6-(bis(bis-2-pyridyl)methoxymethane)pyridine), indicates consecutive (proton-coupled) oxidation steps furnish a Co(IV) species that catalyzes the oxidation of water in basic media.

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