Cobalt: A trace element that is a component of vitamin B12. It has the atomic symbol Co, atomic number 27, and atomic weight 58.93. It is used in nuclear weapons, alloys, and pigments. Deficiency in animals leads to anemia; its excess in humans can lead to erythrocytosis.Hydrogen Sulfide: A flammable, poisonous gas with a characteristic odor of rotten eggs. It is used in the manufacture of chemicals, in metallurgy, and as an analytical reagent. (From Merck Index, 11th ed)Sulfides: Chemical groups containing the covalent sulfur bonds -S-. The sulfur atom can be bound to inorganic or organic moieties.Cystathionine gamma-Lyase: A multifunctional pyridoxal phosphate enzyme. In the final step in the biosynthesis of cysteine it catalyzes the cleavage of cystathionine to yield cysteine, ammonia, and 2-ketobutyrate. EC 4.4.1.1.Cobalt Radioisotopes: Unstable isotopes of cobalt that decay or disintegrate emitting radiation. Co atoms with atomic weights of 54-64, except 59, are radioactive cobalt isotopes.Thiosulfates: Inorganic salts of thiosulfuric acid possessing the general formula R2S2O3.Sulfur Oxides: Inorganic oxides of sulfur.Nickel: A trace element with the atomic symbol Ni, atomic number 28, and atomic weight 58.69. It is a cofactor of the enzyme UREASE.Sulfur: An element that is a member of the chalcogen family. It has an atomic symbol S, atomic number 16, and atomic weight [32.059; 32.076]. It is found in the amino acids cysteine and methionine.Cobalt Isotopes: Stable cobalt atoms that have the same atomic number as the element cobalt, but differ in atomic weight. Co-59 is a stable cobalt isotope.Sulindac: A sulfinylindene derivative prodrug whose sulfinyl moiety is converted in vivo to an active NSAID analgesic. Specifically, the prodrug is converted by liver enzymes to a sulfide which is excreted in the bile and then reabsorbed from the intestine. This helps to maintain constant blood levels with reduced gastrointestinal side effects.Cystathionine beta-Synthase: A multifunctional pyridoxal phosphate enzyme. In the second stage of cysteine biosynthesis it catalyzes the reaction of homocysteine with serine to form cystathionine with the elimination of water. Deficiency of this enzyme leads to HYPERHOMOCYSTEINEMIA and HOMOCYSTINURIA. EC 4.2.1.22.Chromium: A trace element that plays a role in glucose metabolism. It has the atomic symbol Cr, atomic number 24, and atomic weight 52. According to the Fourth Annual Report on Carcinogens (NTP85-002,1985), chromium and some of its compounds have been listed as known carcinogens.Chromium Alloys: Specific alloys not less than 85% chromium and nickel or cobalt, with traces of either nickel or cobalt, molybdenum, and other substances. They are used in partial dentures, orthopedic implants, etc.Mustard Gas: Severe irritant and vesicant of skin, eyes, and lungs. It may cause blindness and lethal lung edema and was formerly used as a war gas. The substance has been proposed as a cytostatic and for treatment of psoriasis. It has been listed as a known carcinogen in the Fourth Annual Report on Carcinogens (NTP-85-002, 1985) (Merck, 11th ed).Allyl CompoundsOxidation-Reduction: A chemical reaction in which an electron is transferred from one molecule to another. The electron-donating molecule is the reducing agent or reductant; the electron-accepting molecule is the oxidizing agent or oxidant. Reducing and oxidizing agents function as conjugate reductant-oxidant pairs or redox pairs (Lehninger, Principles of Biochemistry, 1982, p471).Protoporphyrins: Porphyrins with four methyl, two vinyl, and two propionic acid side chains attached to the pyrrole rings. Protoporphyrin IX occurs in hemoglobin, myoglobin, and most of the cytochromes.Metals: Electropositive chemical elements characterized by ductility, malleability, luster, and conductance of heat and electricity. They can replace the hydrogen of an acid and form bases with hydroxyl radicals. (Grant & Hackh's Chemical Dictionary, 5th ed)Sulfur Compounds: Inorganic or organic compounds that contain sulfur as an integral part of the molecule.Alkynes: Hydrocarbons with at least one triple bond in the linear portion, of the general formula Cn-H2n-2.Metals, Heavy: Metals with high specific gravity, typically larger than 5. They have complex spectra, form colored salts and double salts, have a low electrode potential, are mainly amphoteric, yield weak bases and weak acids, and are oxidizing or reducing agents (From Grant & Hackh's Chemical Dictionary, 5th ed)Sulfates: Inorganic salts of sulfuric acid.Iron: A metallic element with atomic symbol Fe, atomic number 26, and atomic weight 55.85. It is an essential constituent of HEMOGLOBINS; CYTOCHROMES; and IRON-BINDING PROTEINS. It plays a role in cellular redox reactions and in the transport of OXYGEN.Polychaeta: A class of marine annelids including sandworms, tube worms, clamworms, and fire worms. It includes also the genus Myxicola infundibulum.Sulfonium Compounds: Sulfur compounds in which the sulfur atom is attached to three organic radicals and an electronegative element or radical.Organothiophosphorus Compounds: Compounds containing carbon-phosphorus bonds in which the phosphorus component is also bonded to one or more sulfur atoms. Many of these compounds function as CHOLINERGIC AGENTS and as INSECTICIDES.Anaerobiosis: The complete absence, or (loosely) the paucity, of gaseous or dissolved elemental oxygen in a given place or environment. (From Singleton & Sainsbury, Dictionary of Microbiology and Molecular Biology, 2d ed)Cadmium: An element with atomic symbol Cd, atomic number 48, and atomic weight 114. It is a metal and ingestion will lead to CADMIUM POISONING.Porphyrins: A group of compounds containing the porphin structure, four pyrrole rings connected by methine bridges in a cyclic configuration to which a variety of side chains are attached. The nature of the side chain is indicated by a prefix, as uroporphyrin, hematoporphyrin, etc. The porphyrins, in combination with iron, form the heme component in biologically significant compounds such as hemoglobin and myoglobin.Spectrophotometry: The art or process of comparing photometrically the relative intensities of the light in different parts of the spectrum.Cysteine: A thiol-containing non-essential amino acid that is oxidized to form CYSTINE.Zinc: A metallic element of atomic number 30 and atomic weight 65.38. It is a necessary trace element in the diet, forming an essential part of many enzymes, and playing an important role in protein synthesis and in cell division. Zinc deficiency is associated with ANEMIA, short stature, HYPOGONADISM, impaired WOUND HEALING, and geophagia. It is known by the symbol Zn.Sulfites: Inorganic salts of sulfurous acid.Cadmium Compounds: Inorganic compounds that contain cadmium as an integral part of the molecule.Cysteine Synthase: An enzyme that catalyzes the biosynthesis of cysteine in microorganisms and plants from O-acetyl-L-serine and hydrogen sulfide. This enzyme was formerly listed as EC 4.2.99.8.Tungsten: Tungsten. A metallic element with the atomic symbol W, atomic number 74, and atomic weight 183.85. It is used in many manufacturing applications, including increasing the hardness, toughness, and tensile strength of steel; manufacture of filaments for incandescent light bulbs; and in contact points for automotive and electrical apparatus.CobamidesVitamin B 12: A cobalt-containing coordination compound produced by intestinal micro-organisms and found also in soil and water. Higher plants do not concentrate vitamin B 12 from the soil and so are a poor source of the substance as compared with animal tissues. INTRINSIC FACTOR is important for the assimilation of vitamin B 12.Sulfurtransferases: Enzymes which transfer sulfur atoms to various acceptor molecules. EC 2.8.1.Tungsten Compounds: Inorganic compounds that contain tungsten as an integral part of the molecule.Thiobacillus: A genus of gram-negative, rod-shaped bacteria that derives energy from the oxidation of one or more reduced sulfur compounds. Many former species have been reclassified to other classes of PROTEOBACTERIA.Hydroxocobalamin: Injectable form of VITAMIN B 12 that has been used therapeutically to treat VITAMIN B 12 DEFICIENCY.Corrinoids: Cyclic TETRAPYRROLES based on the corrin skeleton.Quinone Reductases: NAD(P)H:(quinone acceptor) oxidoreductases. A family that includes three enzymes which are distinguished by their sensitivity to various inhibitors. EC 1.6.99.2 (NAD(P)H DEHYDROGENASE (QUINONE);) is a flavoprotein which reduces various quinones in the presence of NADH or NADPH and is inhibited by dicoumarol. EC 1.6.99.5 (NADH dehydrogenase (quinone)) requires NADH, is inhibited by AMP and 2,4-dinitrophenol but not by dicoumarol or folic acid derivatives. EC 1.6.99.6 (NADPH dehydrogenase (quinone)) requires NADPH and is inhibited by dicoumarol and folic acid derivatives but not by 2,4-dinitrophenol.Oxidoreductases Acting on Sulfur Group Donors: Oxidoreductases with specificity for oxidation or reduction of SULFUR COMPOUNDS.Thiotrichaceae: A family of colorless sulfur bacteria in the order Thiotrichales, class GAMMAPROTEOBACTERIA.Sulfur-Reducing Bacteria: A group of gram-negative, anaerobic bacteria that is able to oxidize acetate completely to carbon dioxide using elemental sulfur as the electron acceptor.Sulfur Isotopes: Stable sulfur atoms that have the same atomic number as the element sulfur, but differ in atomic weight. S-33, 34, and 36 are stable sulfur isotopes.Molecular Sequence Data: Descriptions of specific amino acid, carbohydrate, or nucleotide sequences which have appeared in the published literature and/or are deposited in and maintained by databanks such as GENBANK, European Molecular Biology Laboratory (EMBL), National Biomedical Research Foundation (NBRF), or other sequence repositories.Deltaproteobacteria: A group of PROTEOBACTERIA represented by morphologically diverse, anaerobic sulfidogens. Some members of this group are considered bacterial predators, having bacteriolytic properties.Heme: The color-furnishing portion of hemoglobin. It is found free in tissues and as the prosthetic group in many hemeproteins.
  • Its efficiency and durability are similar to that of the cobalt oxides selective surface made by the same method but the production cost is considerably reduced. (spie.org)
  • Previous studies have related the low recovery of nickel and cobalt in the Caron roast-leach process to the formation of less reactive sulfides during roasting and/or the passivation or surface blockage of ferronickel by oxides and/or sulfides. (edu.au)
  • This is followed by a decrease in iron extraction to ≤ 2% after 45-60 min due to the precipitation of red/black oxides and sulfides. (edu.au)
  • The concentrated product is subjected to heating in air (roasting) to form oxides or sulfates from the sulfide, which are more easily reduced. (cdc.gov)
  • Herein, we developed a bimetallic cobalt-manganese sulfide supported on Ni foam (CMS/Ni) via a solvothermal method. (nanomicrolett.com)
  • Here we show that with the combination of an ether-based NaPF 6 /diglyme electrolyte, the dandelion-shaped manganese sulfide electrode displays enhanced reversible capacity, cycle life, and rate capability. (nature.com)
  • The project comprises a volcanogenic massive sulphide ore deposit, with one of Australia's highest grade JORC compliant Inferred Resources for copper: 3.2Mt @ 3.35% (6 September 2017). (abnnewswire.net)
  • The worldwide market for Hydrogen Sulfide Removal is expected to grow at a CAGR of roughly xx% over the next five years, will reach xx million US$ in 2023, from xx million US$ in 2017, according to a new GIR (Global Info Research) study. (reportsnreports.com)
  • A finely powdered cobalt-chromium-molybdenum alloy was tested in rats by intramuscular injection, producing sarcomas at the injection site. (inchem.org)
  • In two other experiments in rats, coarsely or finely ground cobalt-chromium-molybdenum alloy implanted in muscle or pellets of cobalt-chromium-molybdenum alloy implanted subcutaneously did not induce sarcomas. (inchem.org)
  • In an experiment in guinea-pigs, intramuscular implantation of a cobalt-chromium-molybdenum alloy powder did not produce local tumours. (inchem.org)
  • Intraperitoneal injection of a cobalt-chromium-aluminium spinel in rats produced a few local malignant tumours, and intratracheal instillation of this spinel in rats was associated with the occurrence of a few pulmonary squamous-cell carcinomas. (inchem.org)
  • An electrode material includes a sulfide compound containing a tetrazole ring as an active substance. (google.com)
  • For example, a sulfide compound having a triazine ring or a thiadiazole ring has been used as an electrode material. (google.com)
  • As a technique for improving the sulfide-series secondary battery so as to deal with a large current, as disclosed in JP-A-5-74459, an electrode material in which an organic compound having a thiadiazole ring and a disulfide group are combined with a conductive polymer, such as polyaniline, has been proposed. (google.com)
  • a) Manganese (II) sulfide This is a compound involving a transition metal, so we have to be aware of which valence to use for the metal. (gradesaver.com)
  • A similar technique, employing a ferrous chloride-oxygen leaching procedure, was employed to extract metal values from concentrates that contain as much as 45 pct arsenic along with copper, cobalt, and silver. (cdc.gov)
  • The Bureau of Mines investigated a silver-catalyzed oxidative procedure for leaching an arsenical copper sulfide concentrate containing 10 pct As and 32 pct Cu_ Currently, there are no environmentally safe means to treat arsenical copper concentrates in the United States. (cdc.gov)
  • Cobalt-based blue pigments have been used since ancient times for jewelry and paints, and to impart a distinctive blue tint to glass, but the color was later thought by alchemists to be due to the known metal bismuth. (phys.org)
  • Since the beginning of the twentieth century, the major uses of cobalt have been in the production of metal alloys, such as superalloys and magnetic alloys, as well as high-strength steels and hard-metal cemented carbides. (inchem.org)
  • Cobalt concentrations in tissue, serum and urine can be increased in patients with implants made of cobalt-containing alloys. (inchem.org)
  • Implantation in the rat femur of three different cobalt-containing alloys , in the form of powder, rod or compacted wire, resulted in a few local sarcomas. (inchem.org)
  • In another experiment, intramuscular implantation of polished rods consisting of three different cobalt-containing alloys did not produce local sarcomas. (inchem.org)
  • Cobalt is used in the preparation of magnetic, wear-resistant and high-strength alloys. (phys.org)
  • Transition metal chalcogenides such as cobalt sulfides (CoS) have recently attracted significant interest in electrocatalytic hydrogen evolution reaction (HER). (rsc.org)
  • In 2018, Sienna intersected 13.0 meters averaging 0.32% nickel and 0.28% copper and 0.034% cobalt and 0.32 ppm platinum + palladium in drill hole SIE-18-005, as reported in Sienna's News Release dated May 17, 2018. (goldseiten.de)
  • US Cobalt has scheduled a shareholder vote on May 17, 2018 with the transaction expected to close by the end of May 2018. (globenewswire.com)
  • To suppress this effect, a dopant may be used, such as a small amount of cobalt salts, which would be added to the formulation. (wikipedia.org)
  • Focusing on the usual strategy of enhancing electrochemical performance, many research groups aggressively used in situ synthesis to prepare composites based on sulfides and electrically conductive carbon additives. (nature.com)
  • Respective silver and cobalt recoveries of 99 and 97 pct were obtained. (cdc.gov)
  • The objective of this recovery trial was to develop 'proof of concept' benchtop experiments that used biological and chemical separation techniques to extract gold, silver and cobalt from collected PCBs. (slideshare.net)
  • Biological separation Three types of microbe were utilised (acidophiles, fungus and cyanogenic) to determine whether they would selectively extract gold, silver and cobalt from ground PCBs. (slideshare.net)
  • Hydrogen sulfide (H2S) inhibits the last step of the denitrification process, i.e. the reduction of nitrous oxide (N2O) to dinitrogen gas (N-2), both in natural environments (marine sediments) and industrial processes (activated sludge, methanogenic sludge, BioDeNOx process). (wur.nl)
  • In a previously published study, we showed that the inhibitory effect of sulfide to N2O reduction in mixed microbial communities is reversible and can be counteracted by dosing trace amounts of copper. (wur.nl)
  • The objective of the Research and Development program is to provide process design and engineering data on the planned Goongarrie flowsheet while producing sufficient industry standard specification of cobalt and nickel sulphate crystals. (abnnewswire.net)