نتایج جستجو برای: cyanides

تعداد نتایج: 4237  

Journal: :Journal of Biological Chemistry 1926

2003
JAMES T. BOYKIN

Some recent work, no tab ly tha t of Dixon and Elliott , 1 has indicated tha t not all cells and tissues are complete ly cyanide-sensit ive in the sense tha t they reduce their ra te of respiration in the presence of cyanides. Alien ~ has pointed out tha t not all the resp i ra tory exchange in Planaria m a y be inhibited b y cyanides. This has indicated tha t there m a y be other oxidation sys...

Journal: :Acta Chemica Scandinavica 1949

Journal: :Chemical communications 2011
Pazhamalai Anbarasan Helfried Neumann Matthias Beller

A novel protocol for the direct arylthiolation of electron-rich arenes is described. Applying arylsulfonyl cyanides in the presence of catalytic amounts of Pd allows for a straightforward synthesis of diaryl sulfides.

Journal: :Chemical communications 2011
Annelies Peeters Pieterjan Valvekens Frederik Vermoortele Rob Ameloot Christine Kirschhock Dirk De Vos

Double metal cyanides (DMCs) are highly active recyclable heterogeneous catalysts for hydroamination of phenylacetylene with 4-isopropylaniline. The best hydroamination yields are obtained with Zn-Co DMCs, especially if the particle size is decreased by a reverse emulsion synthesis technique.

Journal: :Nature chemistry 2016
Andrew B Cairns Matthew J Cliffe Joseph A M Paddison Dominik Daisenberger Matthew G Tucker François-Xavier Coudert Andrew L Goodwin

The solid phases of gold(I) and/or silver(I) cyanides are supramolecular assemblies of inorganic polymer chains in which the key structural degrees of freedom-namely, the relative vertical shifts of neighbouring chains-are mathematically equivalent to the phase angles of rotating planar ('XY') spins. Here, we show how the supramolecular interactions between chains can be tuned to mimic differen...

Journal: :British journal of industrial medicine 1975
S H El Ghawabi M A Gaafar A A El-Saharti S H Ahmed K K Malash R Fares

The effect of chronic cyanide exposure in the electroplating sections of three factories employing 36 workers was studied and compared with a control group. The concentration of cyanides to which the workers were exposed was measured. The regression line showing the relationship between thiocyanates in urine and the concentration of cyanides in the air was plotted. Increased percentages of haem...

Journal: :Journal of General Physiology 1924

2012
J J Eksteen E. Schoeman

Ion exchange resins were investigated for the effective recovery of platinum, palladium, and gold from a pregnant cyanide heap leach solution. Screening results indicated that strong-base anion exchange resins proved to be most effective in the recovery of these metal cyanides. Gold was selectively recovered with the use of Minix, while effective recovery of gold, platinum, and palladium over t...

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