نتایج جستجو برای: nitrile

تعداد نتایج: 1981  

الهیاری, تیمور , خانه شناس, فرین , خلخالی, حمید رضا ,

Introduction: Manual dexterity impairment due to wearing latex and nitrile gloves among health care employees and laboratory personnel can be a remarkable problem because of its adverse outcomes. The present study was conducted to “compare the effect of using latex and nitrile laboratory gloves on hand dexterity”. .Material and Method: In a semi experimental study design, 30 university were s...

2013
Curt Wentrup Nguyen Mong Lan Adelheid Lukosch Pawel Bednarek David Kvaskoff

Precursors of 3-pyridylnitrene and 2- and 4-pyrimidinylcarbenes all afford mixtures of 2- and 3-cyanopyrroles on flash vacuum thermolysis, but 3-cyanopyrroles are the first-formed products. 3-Quinolylnitrenes and 4-quinazolinylcarbenes similarly afford 3-cyanoindoles. 2-Pyrimidinylcarbenes rearrange to 3-pyridylnitrenes, but 4-pyrimidinylcarbenes and 4-quinazolinylcarbenes do not necessarily re...

2017
Hideji Tanii

OBJECTIVES Allyl nitrile (3-butenenitrile) occurs naturally in the environment, in particular, in cruciferous vegetables, indicating a possible daily intake of the compound. There is no report on actual health effects of allyl nitrile in humans, although it is possible that individuals in the environment are at a risk of exposure to allyl nitrile. However, little is known about its quantitative...

2012
Alan O. Marron Michael Akam Giselle Walker

BACKGROUND Nitrile hydratases are enzymes involved in the conversion of nitrile-containing compounds into ammonia and organic acids. Although they are widespread in prokaryotes, nitrile hydratases have only been reported in two eukaryotes: the choanoflagellate Monosiga brevicollis and the stramenopile Aureococcus anophagefferens. The nitrile hydratase gene in M. brevicollis was believed to have...

Journal: :Dalton transactions 2016
Linda E Eijsink Sébastien C P Perdriau Johannes G de Vries Edwin Otten

The pincer complex (PNN)RuH(CO), with a de-aromatized pyridine in the ligand backbone, is shown to react with nitriles in a metal-ligand cooperative manner. This leads to the formation of a series of complexes with new Ru-N(nitrile) and C(ligand)-C(nitrile) bonds. The initial nitrile cycloaddition products, the ketimido complexes 3, have a Brønsted basic (nitrile-derived) Ru-N fragment. This is...

2018
Andrey D. Novikov Konstantin V. Lavrov Artem S. Kasianov Tatyana V. Gerasimova Alexander S. Yanenko

Rhodococcus sp. strain M8 is a nitrile-degrading bacterium isolated from acrylonitrile-contaminated sites. This strain produces the enzymes for sequential nitrile degradation, cobalt-type nitrile hydratase, and amidase in large amounts. Its draft genome sequence, announced here, has an estimated size of 6.3 Mbp.

2014
S. K. Bhatia P. K. Mehta R. K. Bhatia T. C. Bhalla

Alcaligenes sp. MTCC 10674 has a bienzymatic system for the hydrolysis of nitriles. The nitrile hydratase and amidase have been purified simultaneously to homogeneity using a combination of (NH)4SO4 precipitation, ion exchange chromatography and gel permeation chromatography. Nitrile hydratase and amidase have molecular weight of 47 and 114 kDa, respectively and exist as heterodimer. Optimum te...

Journal: :international journal of occupational hygiene 0
teimour allahyari department of occupational health, faculty of health, urmia university of medical sciences,iran. farin khanehshenas department of occupational health, faculty of health, urmia university of medical sciences,iran. hamidreza khalkhali department of statistics, faculty of health, urmia university of medical sciences,iran.

the present study was conducted to examine the effect of using latex and nitrile examination gloves on hand dexterity.  a  sample  consisting  of  30  university  students  from  urmia  university  of  medical  sciences participated in this study in 2013. the participants conducted purdue pegboard test in three experimental conditions: bare hand (control), with latex gloves and with nitrile glo...

Journal: :Applied and environmental microbiology 2000
M M Tauber A Cavaco-Paulo K Robra G M Gübitz

Rhodococcus rhodochrous NCIMB 11216 produced nitrile hydratase (320 nkat mg of protein(-1)) and amidase activity (38.4 nkat mg of protein(-1)) when grown on a medium containing propionitrile. These enzymes were able to hydrolyze nitrile groups of both granular polyacrylonitriles (PAN) and acrylic fibers. Nitrile groups of PAN40 (molecular mass, 40 kDa) and PAN190 (molecular mass, 190 kDa) were ...

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