(1) Bacterial leaching of lead intermediate products has shown that the maximum rate of galenite oxidation is reached at 50--65 degrees C and the content of Fe3+ in a solvent being above 20 g per litre.
(2) The following compounds (at a concentration of 1%) were used as an energy source: pyrite, chalcopyrite, arsenopyrite, antimonite, galenite, sphalerite, and copper-zinc-pyrite ore. A considerable part of cells was found to be attached to the surface of crystals in the course of oxidation of the above sulfide minerals.
Sulphide
Definition:
(n.) A binary compound of sulphur, or one so regarded; -- formerly called sulphuret.
Example Sentences:
(1) Sulphides, which possibly form on silver alloys, showed cytotoxicity.
(2) Bacteria of the genus Thiobacillus can obtain energy from the chemolithotrophic oxidation of inorganic sulphur and its compounds (sulphide, thiosulphate and polythionates) and use this energy to support autotrophic growth on carbon dioxide.
(3) Elevations in blood methanethiol and dimethyl sulphide concentration in children with congenital hypermethioninaemia were not associated with any neurological or electroencephalographic features of hepatic coma.
(4) No significant changes in respiratory function or bronchial responsiveness related to exposure to hydrogen sulphide in the pulp mill workers were found.
(5) Therapeutic procedure are based either on physical media: infra-red rays, gamma-rays, electric fields for the transformation of temperature or using chemical mixtures containing methyl bromide, carbon tetrachloride and hydrogen sulphide.
(6) produced strong rotten, fishy, hydrogen sulphide off-odours.
(7) Although it has a level of hepatic fixation which is less than that of certain sulphide complexes of technetium, the authors feel that it appears to provide a better relfection of the colloidopexic function of the liver.
(8) Ammonia, methane, hydrogen sulphide and methyl mercaptides were analyzed in the atmospheres of 16 Finnish municipal waste water treatment plants and in 18 pumping stations.
(9) Both TPM and chlorhexidine brought about significant decreases in volatile sulphides (P less than 0.05) as compared to the placebo group.
(10) It is a molybdenum hydroxylase containing 1.6 mol of FAD, 7.3 mol of Fe, 8.3 mol of acid-labile sulphide and 1.3 mol of Mo per mol of enzyme.
(11) A single and chronic inhalation exposure to a complex of chemical substances being part of hydrogen sulphide-containing natural gas (hydrogen sulphide, hydrocarbon, mercaptan, sulphur dioxide) results in a decline in humoral indicators of non-specific body resistance.
(12) The oxidation of sulphide in cell-free extracts proceeds most likely to polysulphanes or to elemental sulphur, depending on the conditions.
(13) Concentration-time interactions were investigated in young male and female Sprague-Dawley, Long Evans and Fischer-344 rats exposed to hydrogen sulphide for two, four or six hours.
(14) The content of hydrogen sulphide reached 6.8 mg per litre which resulted in a change of the ecological environment in the lake.
(15) The flow of sulphide, sulphate, microbial S and non-microbial organic S from the abomasum was estimated using 103Ru and 51Cr.
(16) Addition of sulphide to rumen contents did not result in significant changes in the distribution of Cu between the fluid and solid phases, or in the solubility of Cu in TCA.
(17) The Km values for sulphide and O-acetylserine are 2.7 - 10(-3) and 1.25 - 10(-3) M, respectively.
(18) The method is based on the disintegration of S-methyl methionine in the alkaline medium to form equimolecular quantities of dimethyl sulphide and homoserine.
(19) Official local autopsy reports on 12 alleged victims showed fatal levels of the poisonous gas hydrogen sulphide, one of the waste's lethal byproducts.
(20) Using the histochemical Timm sulphide silver method, a strain-specific, increased stainability of the cell bodies of the dentate granule cells and the hippocampal pyramidal cells was observed in the inbred Kyoto rat.