Results 241 to 250 of about 1,609,424 (285)

Crack Shielding Degradation in Alumina during Cyclic Fatigue

Key Engineering Materials, 2001
no ...
El Attaoui, Hassan, Saâdaoui, Malika, Chevalier, Jérome, Fantozzi, Gilbert   +3 more
openaire   +2 more sources

Rapid degradation of cyclic peroxides by titanium and antimony chlorides

Dalton Transactions, 2015
Rapid and safe degradation of a cyclic peroxide (TPTP) to relatively innocuous products.
Mark S, Bali, David, Armitt, Lynne, Wallace, Anthony I, Day   +3 more
openaire   +2 more sources

Influence of epinephrine on the degradation of cyclic AMP in chicken erythrocytes

Biochemical and Biophysical Research Communications, 1979
Abstract The rate of cyclic AMP degradation in intact chicken erythrocytes was estimated by following cyclic AMP decay after blocking epinephrine-stimulated cyclic AMP synthesis with propranolol. The apparent half life time for cyclic AMP was found to be markedly slowed down by a prolonged exposure of the cells to epinephrine. The first order rate of
E, Gorin, S, Dickbuch
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Synthesis and characterization of cyclic acetal based degradable hydrogels

European Journal of Pharmaceutics and Biopharmaceutics, 2008
While many synthetic, hydrolytically degradable hydrogels have been developed for biomedical applications, there are only a few examples whose polymer backbone does not form acidic products upon degradation. In order to address this concern, we proposed to develop a hydrogel based on a cyclic acetal unit that produces diols and propanals upon ...
Sachiko, Kaihara, Shuichi, Matsumura, John P, Fisher   +2 more
openaire   +2 more sources

Degradation pathways of cyclic alkanes in Rhodococcus sp. NDKK48

Applied Microbiology and Biotechnology, 2004
The degradation pathways for cyclic alkanes (c-alkanes) in Rhodococcus sp. NDKK48 were investigated. Strain NDKK48 used dodecylcyclohexane as a sole carbon and energy source, and five metabolites in the dodecylcyclohexane degradation pathway were detected by gas-chromatography/mass spectra. The metabolites were identified as cyclohexanecarboxylic acid,
D, Koma, Y, Sakashita, K, Kubota, Y, Fujii, F, Hasumi, S Y, Chung, M, Kubo   +6 more
openaire   +2 more sources

Synthesis and Degradation of Cyclic ADP-Ribose by NAD Glycohydrolases

Science, 1993
Cyclic adenosine diphosphoribose (cADPR), a recently discovered metabolite of nicotinamide adenine dinucleotide (NAD), is a potent calcium-releasing agent postulated to be a new second messenger. An enzyme that catalyzes the synthesis of cADPR from NAD and the hydrolysis of cADPR to ADP-ribose (ADPR) was purified to homogeneity from canine spleen ...
H, Kim, E L, Jacobson, M K, Jacobson
openaire   +2 more sources

Joint asperity degradation during cyclic shear

International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, 1990
Abstract Some 30 real rock granite and limestone joints, sawn with a new numerical control technique, were cyclically sheared to measure asperity degradation under normal stresses and displacements consistent with earthquake loading of underground caverns at depths of 50–300 m.
R.W. Hutson, C.H. Dowding
openaire   +1 more source

Formation and Degradation of Cyclic Nucleotides: An Overview

1982
This Chapter provides some background and historical information about cyclic nucleotides as well as a brief overview of the section on their formation and degradation. Detailed and comprehensive treatment of the issues raised in this Chapter will occur in the later chapters.
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Theophylline effect on the cyclic AMP degrading multienzyme sequence

Biochemical Pharmacology, 1982
Membrane-bound 3'.5'-cyclic nucleotide phosphodiesterase (EC 3.1.4.17) is closely associated physically with nucleotidase and deaminase, thus forming an enzyme cluster of unique catalytic behaviour [H. Wombacher, Archs. Biochem. Biophys. 201, 8 (1980)].
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Degradation of TiN coatings under cyclic loading

Acta Materialia, 2004
Degradation of TiN coatings under cyclic contact loading was investigated by repeatedly loading with a 5 μm radius spherical-tipped conical diamond indenter to loads of up to 400 mN. Methods were established to eliminate the effects of creep and thermal drift to obtain data representing the degradation in the films.
J.M Cairney, R Tsukano, M.J Hoffman, M Yang   +3 more
openaire   +1 more source