Results 21 to 30 of about 238,329 (259)

Effects of solvent and structure on the reactivity of 6-substituted nicotinic acids with diazodiphenylmethane in aprotic solvents [PDF]

open access: yesJournal of the Serbian Chemical Society, 2009
The rate constants for the reactions of diazodiphenylmethane (DDM) with 6-substituted nicotinic acids in aprotic solvents at 30°C were determined. The obtained second order rate constants in aprotic solvents, together with literature data for benzoic and
Drmanić Saša Ž.   +2 more
doaj   +3 more sources

Kinetic Concepts for Measuring Microbial Rate Constants: Effects of Nutrients on Rate Constants [PDF]

open access: yesApplied and Environmental Microbiology, 1986
We investigated the effect of preincubation of environmental waters amended with inorganic nutrients (nitrogen, phosphorus, and traces of iron and magnesium) on the kinetics of the microbial transformation of phenol, propanil, propyl ester of (2,4-dichlorophenoxy)acetic acid, methyl parathion, Ronnel, and methoxychlor in pond and river waters.
D F, Paris, J E, Rogers
openaire   +2 more sources

Theoretical study of the addition and hydrogen abstraction reactions of the methyl radical with formaldehyde and hydroxymethylene [PDF]

open access: yesJournal of the Serbian Chemical Society, 2018
The mechanism, thermochemistry and kinetics of the addition and hydrogen-atom abstraction reactions of the methyl radical with formaldehyde and hydroxymethylene were investigated by ab initio calculations.
Nguyen Huu Tho, Nguyen Xuan Sang
doaj   +1 more source

Local Correction with Constant Error Rate [PDF]

open access: yesAlgorithmica, 2013
17 ...
Noga Alon, Amit Weinstein
openaire   +2 more sources

Estimation of the hemoglobin glycation rate constant [PDF]

open access: yesScientific Reports, 2019
Abstract In a previous study, a method of obtaining mean erythrocyte age ( $$M_{RBC}$$ M RBC
Kameyama, Masashi   +8 more
openaire   +4 more sources

Investigation of the reactivity of 4-pyrimidinecarboxylic, 6-hydroxy-4-pyrimidinecarboxylic and 5-hydroxyorotic acids with diazodiphenylmethane in various alcohols. Part III [PDF]

open access: yesJournal of the Serbian Chemical Society, 2007
Rate constants for the reaction of diazodiphenylmethane (DDM) with 4-pyrimidinecarboxylic, 6-hydroxy-4-pyrimidinecarboxylic and 5-hydroxyorotic acids were determined in twelve protic solvents at 30 °C using the well known UV-spectrophotometric method ...
FATHI H. ASSALEH   +3 more
doaj   +3 more sources

Photocatalytic activity of NiFe2O4 and Zn0.5Ni0.5Fe2O4 modified by Eu(III) and Tb(III) for decomposition of Malachite Green

open access: yesOpen Chemistry, 2019
The mixed metal oxides NiFe2O4 and Zn0.5Ni0.5Fe2O4 with a spinel-like structure, pure and modified with the lanthanide ions Eu(III) and Tb(III), were prepared by a sol-gel process in which propylene oxide was used as a gelling agent and then tested as ...
Tsvetkov M. P.   +4 more
doaj   +1 more source

Are rate constants constant?

open access: yesThe Journal of Physiology, 2006
In this issue of The Journal of Physiology, Uebachs et al. (2006) report a seemingly simple observation: the rate of recovery from inactivation of CaV3 (T-type) calcium channels depends on the length of the depolarization that produced the inactivation. Why is this heretical? A basic principle of chemical kinetics is that rate constants are constant.
openaire   +3 more sources

Antioxidative activity of caffeic acid: Mechanistic DFT study [PDF]

open access: yesKragujevac Journal of Science, 2017
This paper reports the results of comprehensive mechanistic investigations of the hydrogen atom transfer (HAT), radical adduct formation (RAF), single electron transfer – proton transfer (SET-PT), and sequential proton loss electron transfer (SPLET ...
Redžepović Izudin   +2 more
doaj   +1 more source

Personalized Zebrafish Models for Fusion‐Positive Pediatric Sarcomas

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Clinical sequencing efforts have revolutionized our approaches to categorizing pediatric cancers in real time. This has dramatically improved our ability to profile pediatric tumors, identify actionable vulnerabilities, and influence clinical care.
Lisa H. Hall   +2 more
wiley   +1 more source

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