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.
Unstable isotopes of cobalt that decay or disintegrate emitting radiation. Co atoms with atomic weights of 54-64, except 59, are radioactive 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.
A trace element with the atomic symbol Ni, atomic number 28, and atomic weight 58.69. It is a cofactor of the enzyme UREASE.
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.
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.
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.
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)
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)
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.
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.
Inorganic compounds that contain tungsten as an integral part of the molecule.
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.
Cyclic TETRAPYRROLES based on the corrin skeleton.
Literary and oral genre expressing meaning via symbolism and following formal or informal patterns.
Time period from 1801 through 1900 of the common era.
Lists of persons or organizations, systematically arranged, usually in alphabetic or classed order, giving address, affiliations, etc., for individuals, and giving address, officers, functions, and similar data for organizations. (ALA Glossary of Library and Information Science, 1983)
A suborder of HEMIPTERA, called true bugs, characterized by the possession of two pairs of wings. It includes the medically important families CIMICIDAE and REDUVIIDAE. (From Dorland, 28th ed)
The affective response to an actual current external danger which subsides with the elimination of the threatening condition.
Sequential operating programs and data which instruct the functioning of a digital computer.
Sound that expresses emotion through rhythm, melody, and harmony.
The use of music as an adjunctive therapy in the treatment of neurological, mental, or behavioral disorders.
Method of making images on a sensitized surface by exposure to light or other radiant energy.
A loose confederation of computer communication networks around the world. The networks that make up the Internet are connected through several backbone networks. The Internet grew out of the US Government ARPAnet project and was designed to facilitate information exchange.
Organized activities related to the storage, location, search, and retrieval of information.
The portion of an interactive computer program that issues messages to and receives commands from a user.
Automotive safety devices consisting of a bag designed to inflate upon collision and prevent passengers from pitching forward. (American Heritage Dictionary, 1982)
A usually four-wheeled automotive vehicle designed for passenger transportation and commonly propelled by an internal-combustion engine using a volatile fuel. (Webster, 1973)
Accidents on streets, roads, and highways involving drivers, passengers, pedestrians, or vehicles. Traffic accidents refer to AUTOMOBILES (passenger cars, buses, and trucks), BICYCLING, and MOTORCYCLES but not OFF-ROAD MOTOR VEHICLES; RAILROADS nor snowmobiles.
A shared service which combines the purchasing power of individual organizations or facilities in order to obtain lower prices for equipment and supplies. (From Health Care Terms, 2nd ed)
Organized groups of users of goods and services.
Agencies of the FEDERAL GOVERNMENT of the United States.

Ionic currents underlying spontaneous action potentials in isolated cerebellar Purkinje neurons. (1/2206)

Acutely dissociated cell bodies of mouse Purkinje neurons spontaneously fired action potentials at approximately 50 Hz (25 degrees C). To directly measure the ionic currents underlying spontaneous activity, we voltage-clamped the cells using prerecorded spontaneous action potentials (spike trains) as voltage commands and used ionic substitution and selective blockers to isolate individual currents. The largest current flowing during the interspike interval was tetrodotoxin-sensitive sodium current (approximately -50 pA between -65 and -60 mV). Although the neurons had large voltage-dependent calcium currents, the net current blocked by cobalt substitution for calcium was outward at all times during spike trains. Thus, the electrical effect of calcium current is apparently dominated by rapidly activated calcium-dependent potassium currents. Under current clamp, all cells continued firing spontaneously (though approximately 30% more slowly) after block of T-type calcium current by mibefradil, and most cells continued to fire after block of all calcium current by cobalt substitution. Although the neurons possessed hyperpolarization-activated cation current (Ih), little current flowed during spike trains, and block by 1 mM cesium had no effect on firing frequency. The outward potassium currents underlying the repolarization of the spikes were completely blocked by 1 mM TEA. These currents deactivated quickly (<1 msec) after each spike. We conclude that the spontaneous firing of Purkinje neuron cell bodies depends mainly on tetrodotoxin-sensitive sodium current flowing between spikes. The high firing rate is promoted by large potassium currents that repolarize the cell rapidly and deactivate quickly, thus preventing strong hyperpolarization and restoring a high input resistance for subsequent depolarization.  (+info)

Cyanide poisoning: pathophysiology and treatment recommendations. (2/2206)

This paper aims to assess and compare currently available antidotes for cyanide poisoning. Such evaluation, however, is difficult. Thus, extrapolation from the results of animal studies has potential pitfalls, as significant inter-species differences in response may exist, and these experiments often involve administration of toxin and antidote almost simultaneously, rather than incorporating a more realistic time delay before initiation of treatment. Direct inference from human case reports is also problematic; either because of uncertainties over the exposure levels involved (and hence the likely outcome without treatment), or because of difficulties in identifying the specific contribution of a particular antidote within the overall treatment regimen. Certainly an effort to compare the relative efficacy of cyanide antidotes produces equivocal findings, with no single regimen clearly standing out. Indeed, factors such as the risks of antidote toxicity to various individuals and other practical issues, may be more important considerations. There is therefore no single treatment regimen which is best for all situations. Besides individual risk factors for antidote toxicity, the nature of the exposure and hence its likely severity, the evolving clinical features and the number of persons involved and their proximity to hospital facilities, all need to be considered. Clinically mild poisoning may be treated by rest, oxygen and amyl nitrite. Intravenous antidotes are indicated for moderate poisoning. Where the diagnosis is uncertain, sodium thiosulphate may be the first choice. With severe poisoning, an additional agent is required. Given the various risks with methaemoglobin formers or with unselective use of kelocyanor, hydroxocobalamin may be preferred from a purely risk-benefit perspective. However the former alternatives will likely remain important.  (+info)

Source of inappropriate receptive fields in cortical somatotopic maps from rats that sustained neonatal forelimb removal. (3/2206)

Previously this laboratory demonstrated that forelimb removal at birth in rats results in the invasion of the cuneate nucleus by sciatic nerve axons and the development of cuneothalamic cells with receptive fields that include both the forelimb-stump and the hindlimb. However, unit-cluster recordings from primary somatosensory cortex (SI) of these animals revealed few sites in the forelimb-stump representation where responses to hindlimb stimulation also could be recorded. Recently we reported that hindlimb inputs to the SI forelimb-stump representation are suppressed functionally in neonatally amputated rats and that GABAergic inhibition is involved in this process. The present study was undertaken to assess the role that intracortical projections from the SI hindlimb representation may play in the functional reorganization of the SI forelimb-stump field in these animals. The SI forelimb-stump representation was mapped during gamma-aminobutyric acid (GABA)-receptor blockade, both before and after electrolytic destruction of the SI hindlimb representation. Analysis of eight amputated rats showed that 75.8% of 264 stump recording sites possessed hindlimb receptive fields before destruction of the SI hindlimb. After the lesions, significantly fewer sites (13.2% of 197) were responsive to hindlimb stimulation (P < 0.0001). Electrolytic destruction of the SI lower-jaw representation in four additional control rats with neonatal forelimb amputation did not significantly reduce the percentage of hindlimb-responsive sites in the SI stump field during GABA-receptor blockade (P = 0.98). Similar results were obtained from three manipulated rats in which the SI hindlimb representation was silenced temporarily with a local cobalt chloride injection. Analysis of response latencies to sciatic nerve stimulation in the hindlimb and forelimb-stump representations suggested that the intracortical pathway(s) mediating the hindlimb responses in the forelimb-stump field may be polysynaptic. The mean latency to sciatic nerve stimulation at responsive sites in the GABA-receptor blocked SI stump representation of neonatally amputated rats was significantly longer than that for recording sites in the hindlimb representation [26.3 +/- 8.1 (SD) ms vs. 10.8 +/- 2.4 ms, respectively, P < 0.0001]. These results suggest that hindlimb input to the SI forelimb-stump representation detected in GABA-blocked cortices of neonatally forelimb amputated rats originates primarily from the SI hindlimb representation.  (+info)

Regulation of interleukin-8 expression by reduced oxygen pressure in human glioblastoma. (4/2206)

Oxygen deprivation is an important biological feature of tumor growth. We previously showed that in glioma, anoxia increases expression of IL-8, a chemokine and angiogenic factor. Here, we analysed for the first time the biochemical mechanisms inducing the IL-8 gene upon anoxia in glioma cells, and showed that they differ from those inducing the VEGF gene. Both genes are induced in biologically and genetically heterogenous glioblastoma cell lines (LN-229, LN-Z308, U87MG, T98G), whereas, in gliosarcoma cells (D247MG), only the VEGF gene is induced. The kinetics of IL-8 and VEGF mRNA inductions differ in these cells and reoxygenation experiments showed that the induction is due to the anoxic stress per se. Furthermore, in LN-229 and LN-Z308 cell lines actinomycin D, DRB and nuclear run-on experiments showed that anoxia stimulates increased transcription of both genes. Electromobility shift assays show increased protein binding to the AP-1 site on the IL-8 promoter following anoxia treatment. Finally, in situ hybridization on glioblastoma sections shows that the in vivo expression patterns of IL-8 and VEGF genes overlap, but are not identical. Since intratumoral augmentation of IL-8 and VEGF secretion, following microenvironmental decreases in oxygen pressure, may promote angiogenesis, further definition of these pathways is essential to appropriately target them for antitumoral therapy.  (+info)

Acetylcholine-induced membrane potential changes in endothelial cells of rabbit aortic valve. (5/2206)

1. Using a microelectrode technique, acetylcholine (ACh)-induced membrane potential changes were characterized using various types of inhibitors of K+ and Cl- channels in rabbit aortic valve endothelial cells (RAVEC). 2. ACh produced transient then sustained membrane hyperpolarizations. Withdrawal of ACh evoked a transient depolarization. 3. High K+ blocked and low K+ potentiated the two ACh-induced hyperpolarizations. Charybdotoxin (ChTX) attenuated the ACh-induced transient and sustained hyperpolarizations; apamin inhibited only the sustained hyperpolarization. In the combined presence of ChTX and apamin, ACh produced a depolarization. 4. In Ca2+-free solution or in the presence of Co2+ or Ni2+, ACh produced a transient hyperpolarization followed by a depolarization. In BAPTA-AM-treated cells, ACh produced only a depolarization. 5. A low concentration of A23187 attenuated the ACh-induced transient, but not the sustained, hyperpolarization. In the presence of cyclopiazonic acid, the hyperpolarization induced by ACh was maintained after ACh removal; this maintained hyperpolarization was blocked by Co2+. 6. Both NPPB and hypertonic solution inhibited the membrane depolarization seen after ACh washout. Bumetanide also attenuated this depolarization. 7. It is concluded that in RAVEC, ACh produces a two-component hyperpolarization followed by a depolarization. It is suggested that ACh-induced Ca2+ release from the storage sites causes a transient hyperpolarization due to activation of ChTX-sensitive K+ channels and that ACh-activated Ca2+ influx causes a sustained hyperpolarization by activating both ChTX- and apamin-sensitive K+ channels. Both volume-sensitive Cl- channels and the Na+-K+-Cl- cotransporter probably contribute to the ACh-induced depolarization.  (+info)

The distribution of neurons expressing calcium-permeable AMPA receptors in the superficial laminae of the spinal cord dorsal horn. (6/2206)

The superficial dorsal horn is a major site of termination of nociceptive primary afferents. Fast excitatory synaptic transmission in this region is mediated mainly by release of glutamate onto postsynaptic AMPA and NMDA receptors. NMDA receptors are known to be Ca2+-permeable and to provide synaptically localized Ca2+ signals that mediate short-term and long-term changes in synaptic strength. Less well known is a subpopulation of AMPA receptors that is Ca2+-permeable and has been shown to be synaptically localized on dorsal horn neurons in culture (Gu et al., 1996) and expressed by dorsal horn neurons in situ (Nagy et al., 1994; Engelman et al., 1997). We used kainate-induced cobalt uptake as a functional marker of neurons expressing Ca2+-permeable AMPA receptors and combined this with markers of nociceptive primary afferents in the postnatal rat dorsal horn. We have shown that cobalt-positive neurons are located in lamina I and outer lamina II, a region strongly innervated by nociceptors. These cobalt-positive neurons colocalize with afferents labeled by LD2, and with the most dorsal region of capsaicin-sensitive and IB4- and LA4-positive afferents. In contrast, inner lamina II has a sparser distribution of cobalt-positive neurons. Some lamina I neurons expressing the NK1 receptor, the receptor for substance P, are also cobalt positive. These neurons are likely to be projection neurons in the nociceptive pathway. On the basis of all of these observations, we propose that Ca2+-permeable AMPA receptors are localized to mediate transmission of nociceptive information.  (+info)

EPR characterization of axial bond in metal center of native and cobalt-substituted guanylate cyclase. (7/2206)

The nature of the metal-proximal base bond of soluble guanylate cyclase from bovine lung was examined by EPR spectroscopy. When the ferrous enzyme was mixed with NO, a new species was transiently produced and rapidly converted to a five-coordinate ferrous NO complex. The new species exhibited the EPR signal of six-coordinate ferrous NO complex with a feature of histidine-ligated heme. The histidine ligation was further examined by using the cobalt protoporphyrin IX-substituted enzyme. The Co2+-substituted enzyme exhibited EPR signals of a broad g perpendicular;1 component and a g;1 component with a poorly resolved triplet of 14N superhyperfine splittings, which was indicative of the histidine ligation. These EPR features were analogous to those of alpha-subunits of Co2+-hemoglobin in tense state, showing a tension on the iron-histidine bond of the enzyme. The binding of NO to the Co2+-enzyme markedly stimulated the cGMP production by forming the five-coordinate NO complex. We found that N3- elicited the activation of the ferric enzyme by yielding five-coordinate high spin N3- heme. These results indicated that the activation of the enzymes was initiated by NO binding to the metals and proceeded via breaking of the metal-histidine bonds, and suggested that the iron-histidine bond in the ferric enzyme heme was broken by N3- binding.  (+info)

Inhibition of hypoxia-inducible factor 1 activation by carbon monoxide and nitric oxide. Implications for oxygen sensing and signaling. (8/2206)

It has been proposed that cells sense hypoxia by a heme protein, which transmits a signal that activates the heterodimeric transcription factor hypoxia-inducible factor 1 (HIF-1), thereby inducing a number of physiologically relevant genes such as erythropoietin (Epo). We have investigated the mechanism by which two heme-binding ligands, carbon monoxide and nitric oxide, affect oxygen sensing and signaling. Two concentrations of CO (10 and 80%) suppressed the activation of HIF-1 and induction of Epo mRNA by hypoxia in a dose-dependent manner. In contrast, CO had no effect on the induction of HIF-1 activity and Epo expression by either cobalt chloride or the iron chelator desferrioxamine. The affinity of CO for the putative sensor was much lower than that of oxygen (Haldane coefficient, approximately 0.5). Parallel experiments were done with 100 microM sodium nitroprusside, a nitric oxide donor. Both NO and CO inhibited HIF-1 DNA binding by abrogating hypoxia-induced accumulation of HIF-1alpha protein. Moreover, both NO and CO specifically targeted the internal oxygen-dependent degradation domain of HIF-1alpha, and also repressed the C-terminal transactivation domain of HIF-1alpha. Thus, NO and CO act proximally, presumably as heme ligands binding to the oxygen sensor, whereas desferrioxamine and perhaps cobalt appear to act at a site downstream.  (+info)

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TY - JOUR. T1 - Evidence against implant-derived cobalt toxicity. T2 - Case report and retrospective study of serum cobalt concentrations in an orthopedic implant population. AU - Tolan, Nicole V.. AU - Sierra, Rafael J.. AU - Moyer, Thomas P.. PY - 2015/2/1. Y1 - 2015/2/1. N2 - Objectives: Cobalt (Co) exposure has been documented to result in increased erythropoiesis. To evaluate the potential for implant-derived Co toxicity, we examined the relationship between serum Co (sCo) and erythrocyte counts (ERY) in a metal-containing total-hip arthroplasty implant population. Methods: Retrospective review of sCo concentrations identified 77 patients with concomitant ERY. Statistical analysis was performed to determine if there was a significant difference in ERY for patients divided into clinically relevant sCo ranges. A single detailed case review of a patient with a loose mal-positioned acetabular component and significantly elevated sCo was also performed for symptoms thought to arise from Co ...
In this diploma thesis the adsorption of cobalt ions on egg shells was studied depending on the different initial concentrations of cobalt ions solutions (4.488 mmol dm-3, 8.365 mmol dm-3, 11.427 mmol dm-3, 20.814 mmol dm-3, and 31.223 mmol dm-3) at a constant temperature of 28°C, stirring speed of 200 rpm for 96 h. Egg shells with diameter d , 125 m were used as adsorbent while the concentrations of cobalt ions in equilibrium solutions were determined spectrophotometrically. Based on the results obtained, it can be concluded that the amount of adsorbed cobalt ions (qe) increases with the increase of the equilibrium concentration of cobalt ions in solution (ce) reaching value of qe = 0.163 mmol g-1 that represents the equilibrium amount of adsorbed cobalt ions on egg shells. The adsorption efficiency of cobalt ions reaches its maximum value of 9.758 % at initial concentration of 8.365 mmol dm-3 and then decreases with the increase of initial concentration of cobalt ions in solution. Taking ...
TY - JOUR. T1 - Redox characteristics of Schiff base manganese and cobalt complexes related to water-oxidizing complex of photosynthesis. AU - Hotchandani, S.. AU - Ozdemir, U.. AU - Nasr, C.. AU - Allakhverdiev, Suleyman. AU - Karacan, N.. AU - Klimov, V. V.. AU - Kamat, P. V.. AU - Carpentier, R.. PY - 1999/2/1. Y1 - 1999/2/1. N2 - In an effort to obtain synthetic analogues of water-oxidizing complex (WOC) of photosystem II (PS II) of plant photosynthesis, a Schiff base manganese and a cobalt complex, employing Niten, a SALEN type ligand, have been prepared. Cyclic and square wave voltammetric measurements have been performed to assess their redox characteristics. Both complexes undergo several reduction processes in cathodic negative potential region at more or less similar potentials. In view of these reductions being independent of the nature of the metal, they are thought to be ligand-localized. Although similar in negative region, a marked difference in the behavior of the complexes is ...
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Building on the idea of a pentapyridine ligand, the Piers group has recently focused on the development of a family of boron-substituted pentadentate ligands (B2Pz4Py). This work will describe the expansion of preliminary research completed by Dr. Denis Spasyuk, involving newly synthesized cobalt complexes coordinated with a dianionic pentadentate phenyl-substituted diborate ligand. Instead of continuing with the phenyl-substituted ligand, the synthetic procedure for the ligand was adapted to make a tolyl-substituted version. The synthesis and characterization of cobalt(II) complexes and their propensity to bind O2 forming a binuclear μ-peroxo cobalt(III) complex was explored. The binding of oxygen was found to be reversible and that the O2 was activated towards protonation and that reduction of the products lead back to cobalt(II). The relevance of this chemistry to the Oxygen Reduction Reaction (ORR) was discussed. The catalytic ability of the complex to reduce oxygen was measured and ...
Workers may be exposed to cobalt during the production of cobalt and cobalt salts, in the production of alloys and hard metal, drying agents, pigments and catalysts, and during diamond polishing. World production of refined cobalt has increased steadily over the last decade, due partly to new operations and partly to a net increase in production by established producers [1]. World cobalt mine production in 2001 was 36,700 tons and the cobalt refinery production 38,400 tons [2]. The respective numbers in 2016 were 123,000 tons and 91,300 tons [3]. In the United States, more than a million workers are potentially exposed to cobalt and its compounds [4]. In Finland, about 1500 workers (0.1% of employed people) are estimated to be exposed to cobalt or cobalt compounds at work [5].. Different epidemiological studies provide relatively sparse and contradictory data on the carcinogenicity of cobalt to humans. A Swedish study retrospectively followed a cohort of 3000 cobalt workers in 1951-1982 [6]. It ...
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Weve made it easier to discover products with sustainability certifications, as part of our commitment to help preserve the natural world. After viewing product detail pages, look here to find an easy way to navigate back to pages you are interested in. Named for a shade of blue, cobalt chloride in liquid or paper form is toxic when ingested. Cobalt Chloride Humidity Test Strips, Pack of 1,200, American Educational Cobalt Chloride pH Test Paper (Bundle of 10), Hammermill Colored Paper, 24 lb Blue Printer Paper, 8.5 x 11-1 Ream (500 Sheets) - Made in the USA, Pastel Paper, Wisesorb 40g Indicating Silica Gel Dehumidifier Desiccant Tin Canister, Wisetin Orange to Green Color Changing, SG-40 No Cobalt (II) Chloride-Reusable (Pack of 2), AmazonBasics 50% Recycled Color Printer Paper - Blue, 8.5 x 11 Inches, 1 Ream (500 Sheets), Micro Essential Lab CM-240 Hydrion Chlorine Dispenser 10-200 PPM Test Roll Plus Extra Roll 200 Tests, Hydrion Water Finder Tester 1/2 Inch Wide by 50 Foot Roll, DRY&DRY ...
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TY - JOUR. T1 - Effect of Cobalt on the Catalytic Properties of Platinum during the Oxidation of CO. T2 - Experimental Data and Quantum-Chemical Simulation. AU - Pichugina, D. A.. AU - Nikitina, N. A.. AU - Kuzmenko, N. E.. AU - Potemkin, D. I.. PY - 2019/10/1. Y1 - 2019/10/1. N2 - Abstract: The oxidation of CO over Pt and Pt-Co catalysts was studied both experimentally and by quantum-chemistry calculations. Density functional theory simulation shows that CO is oxidized on Pt13 via dissociative oxygen adsorption. The calculated activation energy for the dissociation of O2 on Pt13 is 56 kJ/mol. It is found that when a cobalt atom is introduced into the cluster, the activation energy falls for the stages of CO oxidation and the dissociation of O2. Catalytic tests performed on Pt and Pt0.5Co0.5 nanopowders confirm the Pt-Co system displays high activity in the oxidation of CO.. AB - Abstract: The oxidation of CO over Pt and Pt-Co catalysts was studied both experimentally and by quantum-chemistry ...
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In this study, N,N-dimethylaminopropyl methacrylamide (DMAPMAm) homopolymer and DMAPMAm/itaconic acid (DMAPMAm/IA) copolymers were obtained from 60Co-γ radiation polymerization. Gel fraction and percentage of swelling values were calculated through gravimetrical calculations. In order to increase the swelling of the hydrogel, the amount of IA in initial copolymer composition was gradually increased, but it was observed that gelation values were low. The structural and morphological assessments of homopolymer and copolymers were made by means of several techniques including Fourier Transform Infrared Spectroscopy (FT-IR), Scanning Electron Microscopy (SEM), and Energy-Dispersive X-ray Spectroscopy (EDS). The cobalt ion (Co2+) removal capacities of hydrogel were investigated by taking into account of the initial metal ion concentration and pH of aqueous medium. When it came to the maximum capacity of values obtained from adsorption experiments by using Co2+ solutions at pH 5, they changed between ...
In order to collect further evidence on the mode of action for cobalt-induced carcinogenicity (see chapter Summary and discussion of carcinogenicity or the endpoint summary in IUCLID section 7.7- Carcinogenicity), further in vitro mechanistic studies were conducted. The aim of these studies was to elucidate the role of genotoxicity, oxidative stress and HIF1a activation, which are recognised key events in cells and tissues after cobalt exposure. In the ToxTracker assay reported by Derr and Brandsma (2019 and Hendriks (2019) mouse embryonic stem (mES) reporter cell lines were exposed to 15 different cobalt substances. The ToxTracker assay is used to identify the biological reactivity and potential carcinogenic properties of these cobalt substances in a single test. The test system monitors activation of specific cellular signalling pathways for detection of the biological reactivity of the cobalt substances. ToxTracker consists of a panel of six different mES GFP reporter cell lines ...
The predicted dominance of electric vehicles and the need for grid-scale energy storage have heightened concerns that cobalt, a key constituent of lithium-ion batteries, could become a critical limiting factor. With limited terrestrial resources and over half the global production coming from politically challenging regions increasing risk, a shortage of cobalt could be experienced by the early 2020s. Fortunately, the oceans contain about 70 times more cobalt than on land and can be harvested sustainably with passive adsorption technologies; and a symbiotic system using existing offshore structures to harvest cobalt could enhance the economic feasibility of seawater cobalt harvesting. Our study finds that retrofitting just 76 unused oil platforms in the Gulf of Mexico could extract an average of 27.3% of the nations 2017 cobalt consumption. New Offshore Opportunity for Underwater Cobalt Harvesting has the potential to reduce the cobalt supply pinch point in lithium-ion battery production ...
TY - JOUR. T1 - Cobalt ions cross an electrotonic synapse if cytoplasmic concentration is low. AU - Politoff, A.. AU - Pappas, G. D.. AU - Bennett, Michael V. L.. PY - 1974/8/16. Y1 - 1974/8/16. UR - http://www.scopus.com/inward/record.url?scp=0016138697&partnerID=8YFLogxK. UR - http://www.scopus.com/inward/citedby.url?scp=0016138697&partnerID=8YFLogxK. U2 - 10.1016/0006-8993(74)90466-1. DO - 10.1016/0006-8993(74)90466-1. M3 - Article. C2 - 4844459. AN - SCOPUS:0016138697. VL - 76. SP - 343. EP - 346. JO - Brain Research. JF - Brain Research. SN - 0006-8993. IS - 2. ER - ...
Our previous study demonstrated the direct involvement of the HIF-1α subunit in the promotion of cardiac differentiation of murine embryonic stem cells (ESCs). We report the use of cobalt chloride to induce HIF-1α stabilization in human ESCs to promote cardiac differentiation. Treatment of undifferentiated hES2 human ESCs with 50μM cobalt chloride markedly increased protein levels of the HIF-1α subunit, and was associated with increased expression of early cardiac specific transcription factors and cardiotrophic factors including NK2.5, vascular endothelial growth factor, and cardiotrophin-1. When pretreated cells were subjected to cardiac differentiation, a notable increase in the occurrence of beating embryoid bodies and sarcomeric actinin-positive cells was observed, along with increased expression of the cardiac-specific markers, MHC-A, MHC-B, and MLC2V. Electrophysiological study revealed increased atrial-and nodal-like cells in the cobalt chloride-pretreated group. Confocal calcium ...
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1. Database There are 54 references of publicly available scientific literature and 10 unpublished statements and comments, which address the potential carcinogenicity of cobalt compounds. Upon screening, a total of 29 references were evaluated further (please refer to the section on disregarded studies on the carcinogenicity endpoint at the end of this discussion (IUCLID) or in Appendix 3 of the CSR. These references were evaluated for their relevance and reliability for the assessment of carcinogenicity in the context of the chemical risk assessment of cobalt compounds, specifically under the REACH Regulation (ECHA Guidance on information requirements and chemical safety assessment Chapter R.4: Evaluation of available information, Version 1.1 December 2011). Only three animal studies investigated the induction of tumours following chronic inhalation exposure; one in hamsters with cobalt(II)oxide (Wehner et al., 1977), and two studies with rats and mice to cobalt sulfate hexahydrate and cobalt ...
From: Steven J. Hill ,[email protected], Signed-off-by: Steven J. Hill ,[email protected], --- arch/mips/cobalt/setup.c , 18 +++--------------- 1 file changed, 3 insertions(+), 15 deletions(-) diff --git a/arch/mips/cobalt/setup.c b/arch/mips/cobalt/setup.c index ec3b2c4..3fdd449 100644 --- a/arch/mips/cobalt/setup.c +++ b/arch/mips/cobalt/setup.c @@ -15,9 +15,9 @@ #include ,linux/ioport.h, #include ,linux/pm.h, -#include ,asm/bootinfo.h, #include ,asm/reboot.h, #include ,asm/gt64120.h, +#include ,asm/fw/fw.h, #include ,cobalt.h, @@ -97,21 +97,9 @@ void __init plat_mem_setup(void) void __init prom_init(void) { - unsigned long memsz; - int argc, i; - char **argv; + fw_init_cmdline(); - memsz = fw_arg0 & 0x7fff0000; - argc = fw_arg0 & 0x0000ffff; - argv = (char **)fw_arg1; - - for (i = 1; i , argc; i++) { - strlcat(arcs_cmdline, argv[i], COMMAND_LINE_SIZE); - if (i , (argc - 1)) - strlcat(arcs_cmdline, , COMMAND_LINE_SIZE); - } - - add_memory_region(0x0, memsz, BOOT_MEM_RAM); + ...
This document provides step-by-step instructions for porting Cobalt to run on your platform. To do so, youll use Starboard, which is Cobalts porting layer and OS abstraction. Starboard encapsulates only the platform-specific functionality that Cobalt uses.. To complete a port, you need to add code to the Cobalt source tree. We recognize that many porters will not want to actually share details of their Starboard implementation with external users. These porters likely have their own source control and will fork Cobalt into their software configuration management (SCM) tools. These instructions take that use case into account and explain how to add your port in a way that will not conflict with future Cobalt source code changes.. ...
NanoMolar Nickel / Cobalt Assay Kit The NanoMolar Nickel / Cobalt Assay Kit is for measurement of nanomolar concentrations of nickel or cobalt (10 nM - 500 nM). The assay is based on the principle that binding the fluorescence dye NMA with nickel or cobalt ions results in decrease of the fluorescence intensity (emission 535 nm, excitation 485 nm). Other metal ions including Mg2+, Ca2+, Zn2+, Mn2+, Al3+, Cu2+ and Ag+ give much lower assay sensitivity. Chelators such EDTA and thiol compounds bind strongly some of the metal ions and should be avoided in the assay.. The assay kit can be used for high-throughput measurements of nickel or cobalt concentrations in biological samples or environmental water samples. The kit can also be used for biochemical assays of enzyme assays associated with nickel or cobalt metabolism.. ...
As previously discussed, cobalt has a low bioaccumulation potential in both aquatic and terrestrial pathways (see section 4.4) and as an essential element for plants and animals (Gal et al 2008) homeostatic mechanisms maintain cobalt concentrations in tissues and body fluids within ideal levels by actively accumulating or depurating cobalt depending on metabolic requirements. Therefore there is no indication of a bioaccumulation potential, hence secondary poisoning is not considered relevant. The PNECoral values represent dietary predicted no effect concentrations, below which food concentrations are not expected to pose a risk to birds or mammals. Although a PNECoral value is not relevant for cobalt, an approximate no effect dietary concentration was estimated for both bird and mammal pathways using a Tier 1 approach according to ECHA TGD R.7.13. In this approach, a default assessment factor was applied to the lowest available NOEC identified for both the bird (7.5.1) and mammal (7.5.2) ...
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Cobalt ions can enhance the generation of reactive oxygen species (ROS), which may be the reason for cobalt toxicity. This study aimed to determine whether Co 2+ toxicity in goldfish is related to induced oxidative stress in gills, heart and spleen, and to assess responses of antioxidant systems. Exposure of goldfish to 50, 100 and 150 mg L -1 of Co 2+ for 96 h elevated total hemoglobin in blood by 23, 44 and 78%, respectively. In gills, cobalt exposure enhanced lipid peroxide levels and activities of primary antioxidant enzymes; superoxide dismutase (SOD) rose by 125% and glutathione peroxidase (GPx) increased by 53-296%. Glutathione-S- transferase (GST) activity also increased by 117-157% and glucose-6-phosphate dehydrogenase (G6PDH) enhanced by 46-96%. Heart showed limited effects of fish exposure to 50 or 100 mg L -1 of Co 2+, but the exposure to 150 mg L -1 of Co 2+ elevated concentrations of lipid peroxides by 123% and activities of GPx by 98% and SOD by 208%. The most substantial effects ...
To determine the effect of different types of cobalt supplementation on dairy cow performance and indicators of cobalt status and the benefits of vitamin B12 supplementation in cobalt restricted cows.. Expected Outcomes. ...
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Coordination chemistry research on metal complexes of Schiff bases has shown their potential for applications based on their biological activities, catalytic reactions and as photoelectric materials. 4-Chloro-2-(quinolin-8-yliminomethyl)-phenol (HClQP) is a Schiff base synthesized by condesation of 8-aminoquinoline and 5-chloro-2-hydroxybenzaldehyde. It can be used as an N,N,O-tridentate ligand for the synthesis of new metal complexes of Schiff bases. However, few crystal structural studies on the metal complexes of HClQP have so far been reported (Neves et al., 2009; Vasilchenko et al., 1999). In the present work, we report the first cobalt(III) complex of HClQP in cationic form, with a simple cobalt(II) complex in anionic form as the counterion (Fig. 1).. Crystal structure refinement of the title complex revealed that half of the cobalt(II) of the starting material was oxidized to cobalt(III) under the solvothermal synthesis conditions. The cobalt(III) is six-coordinated by four N atoms and ...
TY - JOUR. T1 - Highly Active Oxygen Evolution on Carbon Fiber Paper Coated with Atomic-Layer-Deposited Cobalt Oxide. AU - Choi, Hyung Jong. AU - Han, Gwon Deok. AU - Bae, Kiho. AU - Shim, Joon Hyung. N1 - Funding Information: This research was supported by the Nano Material Technology Development Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science and ICT (no. 2018M3A7B8061661) and by the Korea Ministry of Environment (MOE) through the Public Technology Program based on Environmental Policy (grant no. E416-00070-0604-0).. PY - 2019/3/20. Y1 - 2019/3/20. N2 - In this work, we evaluated the oxygen evolution performance of cobalt oxide (CoO x )-coated carbon fiber paper in electrochemical water splitting. For a uniform coating of CoO x layers along the carbon fiber paper, the atomic layer deposition (ALD) technique was applied. We achieved a uniform and conformal coating of atomic-layer-deposited CoO x (ALD-CoO x ) on the carbon fiber paper. The ...
TY - JOUR. T1 - Confinement of Ultrasmall Cobalt Oxide Clusters within Silicalite-1 Crystals for Efficient Conversion of Fructose into Methyl Lactate. AU - Yan, Yue. AU - Zhang, Zihao. AU - Bak, Seong Min. AU - Yao, Siyu. AU - Hu, Xiaobing. AU - Shadike, Zulipiya. AU - Do-Thanh, Chi Linh. AU - Zhang, Feng. AU - Chen, Hao. AU - Lyu, Xilei. AU - Chen, Kequan. AU - Zhu, Yimei. AU - Lu, Xiuyang. AU - Ouyang, Pingkai. AU - Fu, Jie. AU - Dai, Sheng. PY - 2019/3/1. Y1 - 2019/3/1. N2 - Chemocatalysis of sugars to methyl lactate (MLA) exhibits great advantages over the conventional fermentation approach because of its higher productivity and cost-effective separation process. However, widely used supported metal oxide catalysts suffer from deactivation resulting from sintering during the reaction and removal of coke at high temperatures. Herein, we report ultrasmall cobalt oxide clusters (∼1.7 nm) stabilized within silicalite-1 crystals catalyst ([email protected]), exhibiting superior catalytic ...
Cobalt poisoning can occur when you are exposed to large amounts of it. In this curious study, the doctors selected patients with a pre-operative known sensitisation to chromium, cobalt, nickel, or a cement component for a post-operative allergic reaction. Never think about my knee. Some of the metal ions (e.g. The pragmatic approach adopted by most contact dermatologists for patients known to be allergic to nickel, cobalt or chromium and who require joint replacement is to recommend prostheses made of titanium-based alloys. Very small amounts are needed for animals and humans to stay healthy. FINAL DIAGNOSIS. Doctors in Finland have released a new troubling study on the release of metal debris from knee replacement hardware. Epub 2015 Nov 2.[Pubmed]. The most common metal ions found in knee replacement implants that can cause hypersensitivity include nickel, cobalt, and chromium. Cobalt poisoning can result in nervous system disorders beginning with tremors in the hand, ringing in the ears, ...
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Resource potential of cobalt in India is practically negligible. Cobalt in marine manganese nodule though known since long, its report from terrestrial manganese ore is least observed. This paper reports the occurrence of cobalt in low-grade manganese ores of Bonai-Keonjhar belt, Orissa, eastern India and describes methods for its possible enrichment. Cobalt is associated with manganese minerals like lithiophorite (~CoO: 1.2%) and cryptomelane (~CoO: 0.2%). A feed of low-grade siliceous manganese ore containing 26% Mn and 32% SiO2 and 0.08% Co was subjected to physical beneficiation. By processing the low-grade siliceous ore on a dry belt magnetic separator, a product with 47% Mn at 60% recovery could be obtained. It was observed that along with manganese the cobalt value gets enriched (~Co: 0.38%) more than four times in comparison to the feed. Some other traces like Ni, Cu, Zn, Ga, Li etc. also get enriched in the magnetic product. Thus, through simple dry magnetic separation a low-valued
Lambda-Tris(4,7-diphenyl-1,10-phenanthroline)cobalt(III), a photoactivated DNA-cleaving agent, is a small molecular probe of DNA structure. Because of its chirality, the complex cannot bind to regular right-handed B-form DNA but exhibits site-specific cleavage along the polymer strand at conformationally distinct sites such as those in a left-handed conformation. Both coarse and higher resolution mapping experiments using the chiral cobalt complex indicate intriguing conformational variations along the simian virus 40 genome. Highly specific cleavage is evident in the enhancer and promoter blocks and in the region downstream of 3 termini. A specific cleavage pattern borders an alternating purine/pyrimidine stretch within the enhancer, which was found earlier to bind anti-Z-DNA antibodies. Throughout the simian virus 40 genome, variations in structure delineated with the cobalt complex appear to correlate with regions important for control of gene expression. ...
Cobalt Iron is the global leader in SaaS-based enterprise data protection. The company was founded in 2013 to fundamentally change the way the world thinks about data protection. Through analytics and automation, Cobalt Iron enables enterprises to transform and optimize legacy backup solutions into a simple cloud-based architecture. By leveraging the cloud, Cobalt Iron reduces overall capex by more than 50 percent while eliminating backup failures and inefficiencies. Processing more than 7 million jobs a month for customers in 44 countries, Cobalt Iron delivers modern enterprise data protection for enterprise customers.. Partnering with DLT, through analytics and automation, Cobalt Iron enables enterprises to transform and optimize legacy backup environments into a simple and secure cloud-based solution.. ...
By Peter Kennedy. The Democratic Republic of Congo has granted a monopoly to a new state-owned company that is being set up to buy and market all cobalt in the country that is not mined industrially.. According to a Reuters report, the move is a bid to control the entire artisanal supply chain and boost government revenue through control of prices. Another aim is to exert greater state oversight of working conditions in the artisanal sector, which has been plagued by instances of child labour and other abuses.. That has prompted a number of mining and exploration companies in Canada to try and capitalize on the DRCs image problem by developing projects in North America. They include companies like Fortune Minerals Ltd. [FT-TSX], Canada Cobalt Works Inc., [CCW-TSXV], and First Cobalt Corp [FCC-TSXV, ASX; FTSSF-OTCQB].. Cobalt, with the exception of silver-cobalt ores from the Cobalt Mining Camp in northeast Ontario, is produced primarily as a by-product of copper and nickel and plays a key role ...
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Does anyone have any experience doing this? , ,I have been beating my head trying to get this thing to work because the ,RAQ2 Apache is customised and doesnt take kindly to trying to add mod_proxy ,etc. No one in the RAQ2 user groups seems to know how to get this to work so ,I thought I would see if anyone in Zope land knew. , ,I have read the SSL page at ,http://www.zope.org/Members/unfo/apache_zserver_ssl but it isnt quite as ,straight forward on the Cobalt server. We run some of our Zope hosting services on Cobalt RaQ3s, with Apache in front of Zope. Im unsure of the details of why, but the way its setup now is we compiled our own version of Apache which is what listens on port 80 of the RaQ, and the original Apache that came with the RaQ listens on another port (so the management stuff still works). Simon -- --------- My opinions are my own, NIPs opinions are theirs ---------- Simon J. Coles Email: [EMAIL PROTECTED] New Information Paradigms Work Phone: +44 1344 753703 ...
http://www.championtrees.org/topsoil/b12coblt.htm From the article: B12 is the only vitamin synthesized solely by certain microorganisms many of which are abundant in soil. And the only vitamin containing a trace element: cobalt. B12 owes its chemical name cobalamin to the cobalt at the center of its molecular structure. Humans and all vertebrates require cobalt, though its assimilated only in the form of B12. Cobalt is important in the plant world. Bacteria on root nodules of
http://www.championtrees.org/topsoil/b12coblt.htm From the article: B12 is the only vitamin synthesized solely by certain microorganisms many of which are abundant in soil. And the only vitamin containing a trace element: cobalt. B12 owes its chemical name cobalamin to the cobalt at the center of its molecular structure. Humans and all vertebrates require cobalt, though its assimilated only in the form of B12. Cobalt is important in the plant world. Bacteria on root nodules of
The catalytic performances of different commercial cobalt oxides(CoxOy, i.e., Co2O3, Co3O4, and CoO) for peroxymonosulfate(PMS) activation in dye degradation were compared in this study. The CoO/PMS system exhibited the highest catalytic oxidation performances with more than 96% methylene blue(MB) removal at 90 min. The concentration of dissolved cobalt ions from CoO was 1.474 mg/L at neutral pH and 5.231 mg/L at acidic pH at 90 min which accounted for the high MB removal and CoO activated PMS homogeneously compared to the associated CoSO4/PMS. Co3O4 and Co2O3 exhibited similar catalytic performances and characteristics. The MB removal in Co3O4/PMS and Co2O3/PMS system were more than 88% at neutral pH and over 64% at acidic pH, respectively, in 90 min. The concentration of dissolved cobalt ions from Co3O4 and Co2O3 was less than 0.018 mg/L at neutral pH and 0.036 mg/L at acidic pH at 90 min. The MB removal achieved by Co3O4/PMS and Co2O3/PMS were approximately three times higher than that ...
Nanomaterials in general and cobalt nanoparticles (CoNPs) in particular are of great interest not only because of their multiple applications and environmental impact, but also for their potential toxicity and safety issues. Since most of the mechanisms involved in the toxicity of CoNPs are not very well kno
Cobalt Poisoning from Hip Implants Cobalt Chrome is used in the manufacture of various hip replacement components. A number of studies have confirmed that cobalt and chromium ions are released into the surrounding bone and tissue causing local detrimental effects. However, Cobalt and Chrome ions are toxic to other tissues and body functions. Review of…
The occurrence of pseudotumours following metal-on-metal hip resurfacing arthroplasty (MoMHRA) has been associated with high serum metal ion levels and consequently higher than normal bearing wear. Measuring ground reaction force is a simple method of collecting information on joint loading during a sit-to-stand (STS). We investigated vertical ground reaction force (VGRF) asymmetry during sit-to-stand for 12 MoMHRA patients with known serum metal ion levels. Asymmetry was assessed using two methods: a ratio of VGRF for implanted/unimplanted side and an absolute symmetry index (ASI). It was found that subjects with high serum metal ion levels preferentially loaded their implanted sides. The difference between the two groups was most apparent during the first 22% of STS. VGRF ratio showed significant and strong correlation with serum metal ion levels (Spearmans rho = 0.8, p = 0.003). These results suggest that individual activity patterns play a role in the wear of MoMHRA and preferential loading of an
Further details on the read-across approach are given in Appendix 1.1 of the CSR for the oral systemic effects and Appendix 1.2 of the CSR for the inhalation local effects. Cobalt dinitrate is assigned to the read-across groups (i) oral-systemic: bioavailable cobalt substances group and (ii) inhalation-local: reactive Toxicological relevance of the non-common compound The toxicological relevance of the non-common compound in cobalt dinitrate for oral-systemic toxicity is discussed in Appendix 1.1 of the CSR. Human data - inhalation Repeated dose toxicity - local effects The comprehensive discussion of the available human data can be found at the beginning of chapter 5 of the CSR and in section 7.10 of the IUCLID. The overall outcome was that, based on the findings of the epidemiological studies in workers by Swennen et al. (1993) and Verougstraete et al. (2004), Roto (1980) and Sauni et al. (2010) a cobalt concentration of 0.12 mg Co/m³ will be used as NOAEC for setting a DNEL (inhalation, ...
Nanoparticles of cobalt-substituted hydroxyapatite in regeneration of mandibular osteoporotic bones.: Indications exist that paramagnetic calcium phosphates may
Dont worry about hexamine cobalt chloride (Im assuming that you are doing some sort of 5-RACE). I did the type of ligation you are talking about recently using only the 10xbuffer provided with the buffer (50 mM Tris-HCl (pH 7.8), 10 mM MgCl2, 10 mM DTT and 1 mM ATP). I precipitated the oligo and ssDNA together and performed the ligation reaction in a minimal volume over night at 37C using 40 units of RNA ligase. It worked fine. But in other application I dont know whether hexamine cobalt chloride makes any difference... Marieluise Kirchner wrote: , used anyone the T4 RNA ligase for ssDNA / oligonucleotide-ligation? in , the buffer of my protocoll hexamine cobalt chloride is used. Why? Is the , effect really that big? Has hexamine cobalt chloride any bad effects in , further reactions like PCR or ligation into a vector? , The question is - should i use this hexamine cobalt chloride or better , not? , , thanks and a nice evening , , marie , , --- ...
Ischemia-modified albumin (IMA) is assumed “N-terminal modified” albumin which is generated immediately following myocardial ischemia. The diagnosis of IMA is based on reduced cobalt binding affinity to albumin which is attributed mainly to incapability of cobalt to bind at albumin’s modified N-terminus. Although the albumin cobalt binding test was accepted as a potentially powerful marker for discriminating acute coronary syndrome from nonischemic chest pain, its usefulness has been brought into question in recent years. Patients with acutely ischemic myocardium exhibit a rapid increase in serum levels of fatty acids (FAs). Almost all released FAs are strongly bound to albumin which create conformational changes in the protein with resultant reduced cobalt binding affinity. There is a clear metabolic and temporal relationship between IMA measured via albumin cobalt binding testing and serum levels of FAs. In line with what has been suggested recently in the literature, we conclude
A highly selective and sensitive spectrophotometric determination of cobalt (II) was developed. 7-Nitroso-8-hydroxyquinoline-5-sulfonic acid sodium salt was used as the chromogenic reagent for color development. Although other metals form colored chelates with the ligand, it was possible to develop a selective method using McIlvaines pH 8 citric acid-phosphate buffer. Under these conditions, iron(II), iron (III), copper (II), zinc (II), and manganese (II), minerals likely to be compounded with cobalt (II) in geriatric formulations, do not interfere with the precision of the method or the color development. Calcium (II) and magnesium (II) do not form colored chelates with the used ligand. Hormones, vitamins, and additives likely to be present along with the cobalt ion in pharmaceutical formulations do not interfere. The sensitivity is 0.37 mug of cobalt (II)/ml of sample solution. ...
While the individual need for dosage of nickel and cobalt in anaerobic digesters has been established, together with the biochemistry underpinning such need; their co-requisite in anaerobic digestion of acetate has not been extensively studied. In addition, the balance between the catalytic and toxic concentrations of nickel and cobalt in anaerobic acetate digesters is not well documented. The aim of this study was to examine and evaluate the effects of individual and combined dosage of nickel and cobalt on biogas production as well as on methanogenic population balance of a mesophilic (37°C) anaerobic acetate digester so as to determine their catalytic and toxic concentrations. Four semi-CSTR digesters were daily fed acetate at a loading rate of 1.8 g L-1 d-1 and were operated at a HRT of 10 days for this investigation. Co-dosage of nickel and cobalt in anaerobic acetate digesters were found to lead to increased biogas production in an additive manner, with the sole dosage of nickel resulting ...
en] Metallo-beta-lactamases are native zinc enzymes that catalyse the hydrolysis of beta-lactam antibiotics, but are also able to function with cobalt(II) and require one or two nnetal-ions for catalytic activity. The hydrolysis of cefoxitin, cephaloridine and benzylpenicillin catalysed by CoBcII (cobalt-substituted beta-lactamase from Bacillus cereus) has been studied at different pHs and metal-ion concentrations. An enzyme group of pK(a) 6.52 +/- 0.1 is found to be required in its deprotionated form for metal-ion binding and catalysis. The species that results from the loss of one cobalt ion from the enzyme has no significant catalytic activity and is thought to be the mononuclear CoBcII. It appears that dinuclear CoBcII is the active form of the enzyme necessary for turnover, while the mononuclear CoBcII is only involved in substrate binding. The cobalt-substituted enzyme is a more efficient catalyst than the native enzyme for the hydrolysis of some beta-lactam antibiotics suggesting that the ...
Introduction: Over 1 million metal-on-metal (MOM) hip replacements were performed between 2003 and 2010. These prostheses were intended to be more durable than previous models, but have been associated with a higher failure rate. There have also been isolated cases of fulminant cardiomyopathy in patients with very high serum cobalt levels. We screened a cohort of asymptomatic patients with these prostheses for subclinical cardiac abnormalities. Methods: All patients with MOM hip replacements at our centre undergo regular follow-up in the orthopaedic clinic with serum cobalt and chromium levels, and periodic magnetic resonance scanning of the affected joint. We recruited consecutive asymptomatic patients to receive echocardiography and recorded demographic data including age, height, weight, serum cobalt and chromium levels, and date of prosthesis implantation. Echocardiographers were blinded to medical history and laboratory results. The cohort was split into quartiles of serum cobalt. ANOVA, ...
I passed this paper out in the week after students synthesized a series of Werner complexes in the laboratory. Students had been exposed to descriptive inorganic chemistry and periodic trends, symmetry and (rudimentary) group theory prior to this exercise. In the second half of the laboratory session, they had compared the rates of hydration of hexammine, pentammine, and cis-tetrammine chloride cobalt complexes using UV/VIS, so some students were quite familiar with the stability of the hexammine complex. My students had not yet been introduced to ligand field theory, HSAB theory, redox mechanisms, or the 18-electron rule; incorporation of those ideas would be an interesting extension to the activity if your class has already been prepared to discuss those theories. The paper also explicitly mentions the large number of structures in the RCSB protein data bank that make use of cobalt complexation. This could be another option for extending the exercise for an upper-level course.. Most of the ...
This thesis focuses on the study of hydrogen dynamic behavior in a series of proton sponge cations as well as in bis(silyl)hydride organometallic complexes. To understand the dynamic behavior, a new tool, i.e. the three-dimensional vibrational Schrödinger equation has been derived and solved. Three different vibrational patterns for hydrogen motion have been revealed. The classification of proton sponges and bis(silyl)hydride complexes into those with localized and delocalized hydrogen behavior has been proposed. For the organometallic complexes the influence of the vibrational motion of the hydrogen on J(Si−H) spin−spin coupling constants has been studied. Also this thesis presents a study of [Cp*Co(SiR3)2(H)2] cobalt complexes and their iridium analogues to detect possible Si···H interactions. Based on molecular geometries, Wiberg bond indices, and J(Si-H) spin-spin coupling constants, at least two residual Si···H interactions have been detected in cobalt complexes while there are ...
Was the patient in question a drinker of cobalt laced beer? No - but she did have cobalt in her body. She had bilateral DuPuy ASR metal-on-metal hip prostheses that had been placed 5 years and 4 years prior to the heart transplant. She had learned about one year prior to transplantation that the prostheses were being recalled due to a higher than expected failure rate and a protocol for follow up was sent to her. She was advised to get repeat hip imaging and serum cobalt levels done. Pelvic MRI showed reactive areas with fluid collection and the cobalt level was elevated at 287.6 mcg/liter with a reference value of less than 1.0 mcg/liter. The prostheses were removed 11 and 13 months post heart transplantation. She had a complicated course but apparently recovered. Serial cobalt levels were done and 16 months after transplantation remained at 11.8 mcg/liter a significant drop. She also had a chromium level determined at 248.9 mcg/liter about 8 months after transplantation ...
id:5755,name:Brunswick - Cobalt Blue Tuxedo,slug:brunswick-cobalt-blue-tuxedo,date_created:{date:2020-05-14 11:10:00.000000,timezone_type:3,timezone:America\/Chicago},date_modified:{date:2020-05-14 12:25:55.000000,timezone_type:3,timezone:America\/Chicago},status:publish,featured:false,catalog_visibility:visible,description:,short_description:The Cobalt Blue Brunswick tuxedo is the ideal suit for anyone that wants to wow their fellow party goers. Made from a lightweight comfort wool, you\u2019ll be the best looking and the most comfortable at your prom, homecoming, wedding, or any other special occasion. This blue tuxedo features matching flat front pants, a two button front closure, and a self framed notch lapel, giving it a classic look. The Cobalt Blue Brunswick comes equipped with flap pockets and a side vented back. A matching vest for the Cobalt Blue Brunswick tuxedo is available. Available in both adult and child sizes.\r\n\r\nRental price ...
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Cobalt increases the red cell mass in both man and animals by increasing the production of erythropoietin. Since meat-type chickens can develop pulmonary hypertension from increased erythropoiesis and polycythaemia, two trials were conducted to inves
Several cobalt complexes with tripodal chelating ligands Tp and Tp* (Tp = tris(pyrazolyl)borate; Tp* = tris(3,5-dimethyl-pyrazolyl)borate) were synthesized by treating the homoscorpionates of the first generation with CoBr2 under different conditions. These complexes were characterized with X-ray crystallographic determination as well as IR, NMR, MS, and UV-vis spectroscopies. Reaction of KTp with CoBr2 in THF afforded an unprecedented trinuclear Co(II) complex [TpCo(Hpz)Br]2(CoBr2) (1) with Tp as terminal ligands, as well as an oxidized side-product (Tp2Co)(Co2Br6) (2). The terminal Co(II) centers of (1) are octahedrally coordinated while the Co(II) in the bridging unit has a distorted tetrahedral geometry, holding a neighboring Co···Co distance of 3.472 Å. Reaction of KTp* with CoBr2 afforded half-sandwich Tp*CoBr (4) with pseudotetrahedrally coordinated Co(II) center, which is accessible to other donors. Mononuclear Tp*CoSPh (7) and dinuclear (Tp*Co)2O2(pz)2 (8) were prepared through ...
Rights: This volume was digitized and made accessible online due to deterioration of the original print copy. If you are the author of this work and would like to have online access removed, please contact the Library Administration Office, 785-532-7400, [email protected] ...
Earlier this month, the U.S. Department of Health and Human Services released the 14th Report on Carcinogens (RoC). It contained newly reviewed substances that are known or reasonably anticipated to cause cancer in humans. Included in this list was the metallic element cobalt and cobalt compounds that release cobalt ions in vivo., , , , The National Toxicology Program (NTP), an interagency program whose mission is to evaluate agents of public health concern by developing and applying tools...
Page contains details about nickel cobalt oxide/gadolinium-iron alloy film on silicon wafer . It has composition images, properties, Characterization methods, synthesis, applications and reference articles : nano.nature.com
The design of a catalyst for one of the most important electrocatalytic reactions, the oxygen reduction reaction (ORR), was done following the most recent guidelines of theoretical studies on this topic. Aim of this work was to achieve a synergic effect of two different metals acting on different steps of the ORR. The catalytic activity of Ag, already known and characterized, was enhanced by the presence of a monolayer of cobalt subdivided into nanosized islands. To obtain such a controlled nanostructure, a novel method utilizing self-assembled monolayers (SAMs) as templates was employed. In a recent study, we were able to perform a confined electrodeposition of cobalt onto Ag(111) in a template formed by selectively desorbing a short-chain thiol (3-mercaptopropionic acid, MPA) from binary SAMs using 1-dodecanthiols (DDT). [32] This method allows for an excellent control of the morphology of the deposit by varying the molar ratio of the two thiols. Because cobalt does not deposit on silver at an ...
This market research report examines the foreign trade of Kazakhstan and its perspectives on the global market for cobalt oxides and hydroxides.
This market research report examines the foreign trade of Romania and its perspectives on the global market for cobalt oxides and hydroxides. The
The report firstly introduced the Lithium Cobalt Oxides basics: definitions, classifications, applications and industry chain overview; industry policies and plans; product specifications; manufacturing processes; cost structures and so on. Then it analyzed the worlds main region market conditions, including the product price, profit, capacity, production, capacity utilization, supply, demand and industry growth rate etc. In the end, the report introduced new project SWOT analysis, investment feasibility analysis, and investment return analysis ...
TY - JOUR. T1 - Cation-driven electron transfer involving a spin transition at room temperature in a cobalt iron cyanide thin film. AU - Sato, O.. AU - Einaga, Y.. AU - Iyoda, T.. AU - Fujishima, A.. AU - Hashimoto, K.. PY - 1997/5/15. Y1 - 1997/5/15. N2 - The electronic structure of a cobalt iron cyanide thin film, Na0.4Co1.3[Fe(CN)6]5H2O, was switched from FeIII(low spin)-CN-CoII(high spin) to FeII(low spin)-CN-CoIII(low spin) by exchanging cations in interstitial sites from Na+ to K+. The reverse process was also induced by replacing Na+ with K+. That is, the alkali cations in the interstitial sites dominate the electronic and spin states of the host compound. This type of switching phenomenon can be achieved by choosing a compound with both electronic degeneracy and zeolitic properties.. AB - The electronic structure of a cobalt iron cyanide thin film, Na0.4Co1.3[Fe(CN)6]5H2O, was switched from FeIII(low spin)-CN-CoII(high spin) to FeII(low spin)-CN-CoIII(low spin) by exchanging cations in ...
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We compared price of New Yorker Cobalt Blue 4.25 qt Flare Bowl across hundreds of online stores. We found New Yorker Cobalt Blue 4.25 qt Flare Bowl in 1 store with lowest price $47.33 in eTUNDRA.com. For detailed price comparison of New Yorker Cobalt Blue 4.25 qt Flare Bowl check table below. ...
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Ashlar-Vellum™ Announces Cobalt™ & Xenon™ Solo: October 10, 2013, Austin, TX. Ashlar-Vellum announces Cobalt v8 Solo and Xenon v8 Solo, two new price points in their Designer Elements product line of 3D solid and surface modeling software. Traditionally bundled with a companion license to Graphite™, Ashlar-Vellums precision 2D/3D CAD and wireframe drafting package, Cobalt and Xenon are now available individually without Graphite at lower price points on …
It is with great sadness that I have to announce the following: I will be moving forward with Cobalt without my brother Phil. His recent activities have made it impossible for the two of us to continue on a creative path. We started Cobalt 12 years ago, and our music has carried us through many storms. I am extremely proud of what we have done. But our ideals no longer match, and it is time to keep going. Ive been working rigorously on the material for Slow Forever, and I am set to enter the studio in June 2015 to begin tracking. The loss of Phil is a devastating blow, but I cant let what has happened stop me from completing my work. I am still unclear as to who will be doing the vocals on the album. I have some people in mind. Or I may do them myself. Well see. But it is ultimately sad to lose Phils relentless presence and savage force. More will be posted as it develops. Thank you to everyone who has supported Cobalt over the years and continues to support the band ...
Cobalt Strike is threat emulation software. Red teams and penetration testers use Cobalt Strike to demonstrate the risk of a breach and evaluate mature security programs. Cobalt Strike exploits network vulnerabilities, launches spear phishing campaigns, hosts web drive-by attacks, and generates malware infected files from a powerful graphical user interface that encourages collaboration and reports all activity.
Simona Šlerpaitė-Martinaitienė is an Associate practising in the Prevention and Criminal Law Practice Group at COBALT Lithuania. Before joining COBALT team, Simona worked as a trainee in COBALT and also practised in Prosecutors Office.
Used 2009 Chevrolet Cobalt: Take a look at this used 2009 Chevrolet Cobalt for sale in SASKATOON. This 2009 Chevrolet Cobalt is available for sale in our Used Car Classifieds.
Freshwater: From the database of chronic cobalt toxicity to freshwater invertebrates, 55 individual EC10 or NOEC values for 6 different individual species were reported. The NOEC/L(E)C10 ranged from 1.4 µg/L to 45 µg/L for Ceriodaphnia dubia exposed to a range of water types (CDI 2010i). The table below represents the EC10 values of high quality studies used for the derivation of HC5 and aquatic freshwater PNEC. Where multiple data exist for a given species (,5), e.g., Ceriodaphnia dubia, the geometric mean of the available EC10s for the most sensitive endpoints from each test were used. Table X. High quality studies used for derivation of the HC5and freshwater PNEC ...
CAUTION Some of these materials are toxic in their dry unfired or fired state. You should always use a dust mask when working with these materials. We have an inexpensive, Toxic Dust Mask available. Also, Material Safety Data Sheets are available, for any material youve purchased from us. These materials have always been potentially harmful, so let s get serious about safe handling.. SHIPPING: Raw materials are relatively inexpensive, but are heavy. In some cases shipping may cost more than the product ordered. When the cost of the material ordered is equal to or less than the amount of the shipping, there may be a delay, to confirm that you still want your order shipped ...
The absorption spectrum of cobalt(II)-substituted Aeromonas aminopeptidase is markedly perturbed by the presence of equimolar concentrations of D-amino acid hydroxamates and acyl hydroxamates that have previously been shown to be powerful inhibitors of this enzyme (Wilkes, S. H., and Prescott, J. M. (1983) J. Biol. Chem. 258, 13517-13521). D-Valine hydroxamate produces the most distinctive perturbation, splitting the characteristic 527 nm absorption peak of the cobalt enzyme to form peaks at 564, 520, and 487 nm with molar extinction values of 126, 98, and 67 M-1 cm-1, respectively. A qualitatively similar perturbation, albeit with lower extinction values, results from the addition of D-leucine hydroxamate, whereas D-alanine hydroxamate perturbs the spectrum, but does not evoke the peak at 564 nm. In contrast, hydroxamates of L-valine and L-leucine in concentrations equi-molar to that of the enzyme produce only faint indications of change in the spectrum, but the hydroxamates of several other L-amino
GST Rates & HSN Codes for Cobalt,Magnesium,Bismuth Etc - base metals, namely, Tungsten, Molybdenum, Tantalum, Magnesium, Cobalt mattes, - Chapter 81
Cobalt(0) nanoparticles supported on nanoceria (Co0/CeO2) were prepared from the reduction of cobalt(ii) ions impregnated on the surface of ceria nanopowders. The magnetic Co0/CeO2 catalyst could be isolated from the reaction solution by using a magnet and characterized by using ICP-OES, XRD, TEM, EDX, BET a
2P-158 Removal of Cesium, Cobalt, and/or Strontium, from Aqueous Solution, Using Microbial Cell or Biomass2P-158 Removal of Cesium, Cobalt, and/or Strontium, from Aqueous Solution, Using Microbial Cell or BiomassAN10549378 ...
entailed developing cobalt-copper-gold deposits in the Idaho Cobalt Belt in the central part of the State The diluted proven and probable reserves and inferred resources for the project were estimated to be 286 million metric tons (Mt) grading 0602% cobalt, 045% copper, and 05 grams per metric ton gold The companys initial plan of operations described separate underground mining .. ...
The pilot store for a new technology retailing concept is getting a low-key opening in Reading on 22 December.. The IT Works is a collaboration between electrical retailer Comet and BT and is billed as the UKs first total technology centre. Design work is by Cobalt, which merged with The Jenkins Group this autumn. Cobalt created the interiors, logo, graphics and uniforms and is now working on marketing and communications.. The concept, which offers a total communications solution, was researched in the US. It will cater for knowledgeable and discerning customers.. The Reading concept will be tested for six months before further stores are opened.. ...
Our beautiful |strong|32 ounce EZ Cap Cobalt Flip Top Bottles|/strong| give your craft beverage a distinct edge with eye-catching cobalt glass, an iconic shape and secure flip top lids. This is a favorite bottle for many craft beverages - coffees and teas to kombucha, craft beers, ciders and more. The spacious print area showcases your logo well. Includes flip top lids. NO SETUP CHARGES! Case Pack: 12 pieces Case Weight: 21 lbs. Piece Capacity: 32 oz. Glassware capacities are approximate and should not be used as a standard of measure. For more than two imprint colors contact us. Exact quantity shipments are not guaranteed without an additional charge. Orders may be shipped over or under by 5% of the quantity ordered. If you need an exact quantity, please notify your Account Manager when you receive your Order Confirmation. Get the perfect blend with Grandstand coffee products.
If you live in a remote location near Cobalt ID , you have exciting new rural internet options. Since the launch of the Viasat-2 satellite in 2017, Viasat (formerly Exede) offers internet plans with download speeds up to 100 Mbps in some parts of the United States. Other areas have top-tier Viasat satellite internet plans offering 25 Mbps, 30 Mbps or 50 Mbps downloads-all fast enough to be considered high-speed broadband internet. Even Viasat internet plans with priority data thresholds have unlimited data, although your internet traffic may slow down once you reach your data cap. Rural internet options in Lemhi County used to be limited to local internet providers using legacy copper DSL lines. DSL internet was slow, but it was a step up from dial-up. Settle no more! With new rural internet options from Viasat, come new entertainment and work options. When you get Viasat high-speed satellite internet service, you can enjoy streaming video, listening to internet radio and scrolling on social ...
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Cobalt chrome ring with a rounded edge, brushed finish on face, and an eternity band of channel set black diamonds. -Cobalt Chrome -Black Diamonds -Satin finish on outer face -8mm width Sized and made-to-order. Please come into the shop
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This magnificent off-road vehicle has made its mark in the 23 foot segment. Yes, she is expansive, and then some, but the Cobalt R3 is much more than your typical 23 footer.. Let us begin with her physique. The R3 exterior profile is sleek and low. The transom, platform design and aft sunpad are sculpted beautifully creating a smooth and sexy profile. The sunpad backrest is convertible, and the rumble seat is simple and effective.. As we step aboard through the walk-through transom, you will notice the cockpit has an interior beam measurement that is over a foot wider than any competitive runabout. This is no illusion. This interior expansion, Free Space Reclamation, is exactly what Cobalts build process creates. It is most noticeable in the cockpit, which is adorned with seating that wraps around the transom and the port side. The wrap-around yacht style seating is exclusive to a boat her size. Notice the attention to detail in the upholstery with the stitching in perfect harmony. The design ...
EWGs Tap Water Database Cobalt results for Citrus County Utilities/Charles A. Black | Cobalt. Find out what is in your tap water
Cobalt(0001)[edit]. Graphene on cobalt(0001) is grown similarly as on a Ni substrate.[68] A Co(0001) film is first grown on a ...
"Comic Cobalt" (in Japanese). Neowing. Retrieved July 17, 2013.. *^ マリア様がみてる これまでのお話. [Maria-sama ga Miteru: The story up to now ... Konno, Oyuki (February 2004). "By Graduation...". Cobalt (in Japanese): 36-41.. *^ Konno, Oyuki (April 2004). "All Alone on ... Cobalt Bunko Maria-sama ga Miteru Series Draws the Curtain on 15 Years of History] (in Japanese). ITmedia. November 15, 2013. ... Konno, Oyuki (December 2003). "Christmas Present". Cobalt (in Japanese): 43-47.. *^ ...
Cobalt none NE; NE Trace Required in the synthesis of vitamin B12, but because bacteria are required to synthesize the vitamin ... Cobalt poisoning * One serving of seaweed exceeds the U.S. Tolerable Upper Intake Level (UL) of 1100 μg but not the 3000 μg UL ... One element, cobalt, is available for use by animals only after having been processed into complex molecules (e.g., vitamin B12 ... cobalt, copper, zinc, manganese, molybdenum, iodine and selenium.[5] ...
Cobalt 1735 G. Brandt 1735 G. Brandt Proved that the blue color of glass is due to a new kind of metal and not bismuth as ... "27 Cobalt". Elements.vanderkrogt.net. Retrieved 2008-09-12.. *^ "78 Platinum". Elements.vanderkrogt.net. Retrieved 2008-09-12. ...
Cobalt. structural good. Good high-temperature properties and corrosion resistance. In nuclear applications can absorb neutrons ... Cobalt alloys. Good high-temperature corrosion resistance, possible alternative to Au-Pd brazes. Low workability at low ... For brazing copper, brass, nickel alloys, Monel, medium and high carbon steels and chromium alloys, cobalt alloys, tungsten ... May be substituted for by cobalt-based brazes. Low vapor pressure.. *Pd ...
cobalt 27 Co nickel 28 Ni copper 29 Cu zinc 30 Zn ...
Cobalt Co " Copper Cu " 2.0 mg/l 1.3 mg/l* 1 mg/l 1.00 mg/L ...
Cobalt27Co​58.933 Nickel28Ni​58.693 Copper29Cu​63.546 Zinc30Zn​65.38 Gallium31Ga​69.723 Germa-nium32Ge​72.630 Arsenic33As​ ...
Cobalt. Pink Copper. Blue Iron(II). Green Iron(III). Reddish brown Manganese. Pale pink ...
Yamada, Kazuhiro (2013). "Cobalt: Its Role in Health and Disease". Metal Ions in Life Sciences. 13: 295-320. doi:10.1007/978-94 ... and cobalt (a necessary component of vitamin B12). Elements listed as "Possibly" or "Probably" essential are those cited by the ...
For example, the cobalt(II) hexahydrate ion or the hexaaquacobalt(II) ion [Co(H2O)6]2+ is a hydrated-complex ion that consists ... Nickel, cobalt, and copper can be extracted using hydrometallurgical processes involving complex ions. They are extracted from ... to discover the spatial arrangements of the ligands that were involved in the formation of the complex hexacoordinate cobalt. ...
Claret / Cobalt. Cobalt. Cobalt. Away. White. White. White. Special. Green. White. White. US Open Cup, April 30 against San ...
Cobalt pigments: cobalt violet, cobalt blue, cerulean blue, aureolin (cobalt yellow). *Copper pigments: Azurite, Han purple, ... and the various forms of Cobalt and Cerulean blue. In the early 20th century, organic chemistry added Phthalo Blue, a synthetic ...
"Cobalt green". WebExhibits. 2001. Retrieved December 8, 2007.. *^ "Green pigment spins chip promise". BBC News. August 9, 2006. ... Cobalt green, sometimes known as Rinman's green or zinc green, is a translucent green pigment made by heating a mixture of ... Mixtures of oxidized cobalt and zinc were also used to create green paints as early as the 18th century.[32] ... cobalt (II) oxide and zinc oxide. Sven Rinman, a Swedish chemist, discovered this compound in 1780.[33] Green chrome oxide was ...
It differs from cyanocobalamin in that the cyano at the cobalt is replaced with a methyl group.[1] Methylcobalamin features an ... Preparation of the Reduced Forms of Vitamin B12 and of Some Analogs of the Vitamin B12 Coenzyme Containing a Cobalt-Carbon Bond ... octahedral cobalt(III) centre and can be obtained as bright red crystals.[2] From the perspective of coordination chemistry, ...
The cobalt-containing Vitamin B12 (also known as cobalamin) catalyzes the transfer of methyl (−CH3) groups between two ... Cobalt[52]. Nitrile hydratase. Methionyl aminopeptidase. Methylmalonyl-CoA mutase. Isobutyryl-CoA mutase ... Cracan V, Banerjee R (2013). "Chapter 10 Cobalt and Corrinoid Transport and Biochemistry". In Banci L. Metallomics and the Cell ... It consists of a cobalt(II) ion coordinated to four nitrogen atoms of a corrin ring and a fifth nitrogen atom from an imidazole ...
Cobalt Sentries. not yet classified. Cruellock. not yet classified. Crumplezone. not yet classified. ...
... a designation that also encompassed the neighbouring town of Cobalt. Cobalt was also part of the original Temiskaming Shores ... and the subsequent discovery of large silver deposits in neighboring Cobalt in 1903. During the Cobalt Silver Rush, Haileybury ... Temiskaming Shores and Cobalt share a small public transit system, Tri-Town Transit. ... The city includes the communities of New Liskeard, Haileybury, Dymond, and North Cobalt. ...
Shirley Jackson Emma Roberts Belletrist "2013 Cobalt Writing Prizes". Cobalt. 2013-12-04. Retrieved 2017-06-06. Green, Alyssa ( ... The title story was awarded the Cobalt Writing Prize for Fiction prior to the book's its publication. The book received rave ...
Cobalt". Journal of Physics D: Applied Physics. 2 (101): 101-107. Bibcode:1969JPhD....2..101J. doi:10.1088/0022-3727/2/1/315. ...
Cobalt complexes have been of long-standing interest in inorganic chemistry because they are numerous, easily prepared, and ... It was partly on the basis of his study of cobalt coordination chemistry that Alfred Werner was awarded the Nobel Prize in ... The salt is prepared with a two-step process starting with oxidizing a solution of cobalt chloride and ammonia. 2 CoCl2·6H2O + ... Williams, Gregory M; Olmsted, John, III; Preksa, Andrew P., III (1989). "Coordination complexes of cobalt: inorganic synthesis ...
"Cobalt". Article on Cobalt, character from Dragonlance. Retrieved 2007-01-13. "Linsha Majere". Article on Linsha Majere, ...
Cobalt; Nicolanifanta. "Anti-MC (Part 2)". Hiphopcore.net. Retrieved 23 January 2019. Ward, Shane. "Pigeon John". Formatmag.com ...
Cobalt; built by Port Arthur, launched 17 August 1940 and completed 25 November 1940. Sold for mercantile service 1946, ...
Cobalt-57Edit. 57Co is a gamma emitter. Name Investigation Route of administration In-vitro / in-vivo Imaging / non-imaging ...
27 Co cobalt use. 3200 K. 2927 °C. 5301 °F WebEl. 3200 K. 2927 °C. 5301 °F ...
From the end of World War II until May 1981, when the French Socialist Party came swept to power with the election of François Mitterrand, the state held a monopoly on the production and distribution of audiovisual programmes on French territory. On July 29, 1982, Law 82-652 abolished the state monopoly and created both a Council and High Authority on Audiovisual Communication to oversee the liberalisation of the French audiovisual sector.[6] In 1982, the National Cable Plan was approved, with the ambitious goal of connecting one million households within five years and using the most advanced techniques of the time, including fiber-optic technology. In order to finance the project, a public-private partnership was put in place that allowed private operators to utilise the networks set up by France Telecom to commercial ends.[7] Regulations provided for highly favourable concessions that were awarded to private operators (up to 99 years). Water and Sewage Treatment service providers often ...
He gave six ways to distinguish bismuth and cobalt which were typically found in the same ores: *Bismuth fractures while Cobalt ... Georg Brandt (26 June 1694 - 29 April 1768)[1][2] was a Swedish chemist and mineralogist who discovered cobalt (c.1735). He was ... He was able to show that cobalt was the source of the blue color in glass, which previously had been attributed to the bismuth ... The regulus of Cobalt needs alkalies to precipitate, and then forms dark or black precipitates. ...
Cobalt Nickel Copper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton Rubidium Strontium Yttrium Zirconium Niobium ... "ASM Specialty Handbook: Nickel, Cobalt, and Their Alloys. ASM International. pp. 7-13. ISBN 978-0-87170-685-0. .. ... Nickel is one of four elements (the others are iron, cobalt, and gadolinium)[7] that are ferromagnetic at approximately room ... In 1751, Baron Axel Fredrik Cronstedt tried to extract copper from kupfernickel at a cobalt mine in the Swedish village of Los ...
... cobalt compounds; and uranium compounds. In aerobic organisms, a complex mechanism has been developed to use the oxygen in air ...
The China-Congo-Cobalt nexus. The DRC today has six of the top 10 cobalt mines globally. ... China, despite having no cobalt resources of its own, is responsible for 80% of the worlds cobalt chemical production, which ... to the fact that China will hold most of the worlds supply of cobalt:. "If cobalt falls into the hands of the Chinese, yeah ... If cobalt falls into the hands of the Chinese, yeah you wont see EVs being produced in Europe etc. Not only is primary ...
Cobalt Nitrate is the Inorganic compound with the formula Co(NO3)2.xH2O. It is cobalt(II) salt. The most common form is the ... a b c John Dallas Donaldson, Detmar Beyersmann, "Cobalt and Cobalt Compounds" in Ullmanns Encyclopedia of Industrial Chemistry ... Anhydrous cobalt(II) nitrate adopts a three-dimensional polymeric network structure, with each cobalt(II) atom approximately ... It is commonly reduced to metallic high purity cobalt.[2] It can be absorbed on to various catalyst supports for use in Fischer ...
... research report on Global Cobalt Powder industry that you would know the worlds major regional market conditions of Cobalt ... 2015 Market Research Report on Global Cobalt Powder Industry> was a professional and depth ... Part I Cobalt Powder Industry Overview Chapter One Cobalt Powder Industry Overview. 1.1 Cobalt Powder Definition. 1.2 Cobalt ... 1.6.2 Cobalt Powder Global Emport Market Analysis. 1.6.3 Cobalt Powder Global Main Region Market Analysis. 1.6.4 Cobalt Powder ...
Case of cobalt poisoning. BMJ 1967; 1: 544-545.. *8. Queally JM, Devitt BM, Butler JS, et al. Cobalt ions induce chemokine ... Cobalt in hard metals and cobalt sulfate, gallium arsenide, indium phosphide and vanadium pentoxide. Lyon: IARC, 2006. ... The direct effect of cobalt on cells has recently been explored. Exposure to cobalt ions was found to significantly inhibit ... We believe our patients symptoms were related to their elevated cobalt levels, resulting from cobalt leaching out of their hip ...
Join this list for regular updates on happenings with the reading...upcoming featured guests and special Cobalt Café open ... The official list of the long running Tuesday night Cobalt Café Open Poetry Reading hosted since 1994 by Los Angeles Poet Rick ... Cobalt Café Poets is a Restricted Group with 541 members.. *Cobalt Café Poets ...
Exposure to cobalt may cause cancer. Workers may be harmed from exposure to cobalt and cobalt-containing products. The level of ... Cobalt (Co) is a hard, gray metal that occurs naturally. It is found in rocks, soil, water, plants, and animals, including ... Useful search terms for cobalt include "cobalt metal dust," "cobalt metal powder," "cobalt metal fume," and "elemental cobalt." ... Exposure to cobalt may cause cancer. Workers may be harmed from exposure to cobalt and cobalt-containing products. The level of ...
In case of a failiour, how does these (Cobalt) machines REALLY work? I mean, is it easy to remove / change / upgrade the ...
Cobalt has both beneficial and harmful effects on health. At low levels, it is part of vitamin B12, which is essential for good ... The general population is exposed to low levels of cobalt in air, water, and food. ... How can cobalt affect my health?. Cobalt can benefit or harm human health. Cobalt is beneficial for humans because it is part ... What is cobalt?. Cobalt is a naturally occurring element found in rocks, soil, water, plants, and animals. Cobalt is used to ...
Personal protection: particulate filter respirator adapted to the airborne concentration of the substance. Do NOT let this chemical enter the environment. Sweep spilled substance into covered containers. If appropriate, moisten first to prevent dusting. Carefully collect remainder. Then store and dispose of according to local regulations ...
http://www.mediafire.com/file/2p6361s03xkw8wo/com.vectorunit.cobalt.googleplay.zip/file. .header { position: absolute; width: ...
... is a cobalt group element atom (CHEBI:33358) cobalt atom (CHEBI:27638) is a metal allergen (CHEBI: ... CHEBI:27638 - cobalt atom. Main. ChEBI Ontology. Automatic Xrefs. Reactions. Pathways. Models. ... cobalt atom (CHEBI:27638) has role micronutrient (CHEBI:27027) ... cobalt molecular entity (CHEBI:33888) has part cobalt atom ( ...
... and learn more about Cobalt Chrome. Download Cobalt Chrome and enjoy it on your iPhone, iPad, and iPod touch. ... When you get ten of them, touch the glasses to unleash the powerful Cobalt Chrome form.. Cobalt Chrome have:. - Beautiful 3D ... Get rid of the enemies minions, collect the serum and unleash Cobalt Chrome.. The first game of the OsteoCorps!. Join Colt, ...
Lithium nickel manganese cobalt oxides. From Wikipedia, the free encyclopedia. (Redirected from Lithium nickel manganese cobalt ... Lithium nickel manganese cobalt oxides (abbreviated Li-NMC, LNMC, NMC or NCM) are mixed metal oxides of lithium, nickel, ... In view of potential issues with cobalt sourcing, there is interest in increasing the level of nickel, even though this lowers ... manganese and cobalt. They have the general formula LiNixMnyCozO2. The most important representatives have a composition with x ...
View photos and learn more about this 2010 Chevrolet Cobalt on Edmunds ... This 2010 Chevrolet Cobalt is in stock and for sale in Weber City, Virginia. ... More 2010 Chevrolet Cobalts by City. *2010 Chevrolet Cobalts for Sale in Albuquerque, NM ... 2010 CHEVROLET COBALT LS XFE, silver gray, va dlr, 83000 miles, Stock No: 04753, VIN: 1G1AA1F51A , ...
cobalt and compounds; health hazards; radioactive substances; France. Descriptors (secondary). cobalt; radiation accidents; ... Le cobalt et ses isotopes [in French]. Bibliographic information. Toxicologie-Pathologie professionnelle, 4th Quarter 2005, No. ... Contents of this review article on cobalt and its isotopes: physical, chemical, nuclear and biological characteristics; ... permissible radiation doses; cobalt-57; encyclopaedia; data sheet; medical supervision. Document type. F - Information notes, ...
See an archive of all cobalt blue stories published on the New York Media network, which includes NYMag, The Cut, Vulture, and ...
Cobalt is a component of vitamin B12, which supports the production of red blood cells. Very small ... Cobalt is a naturally occurring element in the earths crust. It is a very small part of our environment. ... Cobalt is a naturally occurring element in the earths crust. It is a very small part of our environment. Cobalt is a component ... Cobalt poisoning can occur when you are exposed to large amounts of it. There are three basic ways that cobalt can cause ...
View photos and learn more about this 2009 Chevrolet Cobalt on Edmunds ... This 2009 Chevrolet Cobalt is in stock and for sale in Lynchburg, Virginia. ... More 2009 Chevrolet Cobalts by City. *2009 Chevrolet Cobalts for Sale in Tulsa, OK ...
There is only one stable isotope of cobalt, which has an atomic weight of 59. (An element may have several different forms, ... Cobalt is a naturally-occurring element that has properties similar to those of iron and nickel. It has an atomic number of 27 ... cobalt-60 and cobalt-57, also written as Co-60 or 60Co and Co-57 or 57Co, and read as cobalt sixty and cobalt fifty-seven. All ... How can cobalt enter and leave my body?. Cobalt can enter your body when you breathe in air containing cobalt dust, when you ...
The Chevrolet Cobalt was introduced in the 2005 model year as a replacement for the Cavalier and was discontinued after the ... The Chevrolet Cobalt was introduced in the 2005 model year as a replacement for the Cavalier and discontinued after the 2010 ... Two tests of a Cobalt were conducted, one with an optional side airbag for the driver and rear passenger, and one without. ... 2005 Chevrolet Cobalt 4-door moderate overlap test. Applies to 2005-10 models ...
Cobalt Cranes. Blessed State playing shows this weekend, 2 in NYC including Babys First Annual Wake & Ba…. Western Mass post- ...
Information on arsenic, a potential agent for chemical terrorism. Provided by the Centers for Disease Control and Prevention (CDC).
Bot::Cobalt::Serializer - Bot::Cobalt serialization wrapper. SYNOPSIS use Bot::Cobalt::Serializer; ## Spawn a YAML (1.1) ... handle_syck = Bot::Cobalt::Serializer-,new(YAML); $handle_yaml = Bot::Cobalt::Serializer-,new(YAMLXS); $handle_json = Bot:: ... my $serializer = Bot::Cobalt::Serializer-,new; my $serializer = Bot::Cobalt::Serializer-,new( $format ); my $serializer = Bot:: ... Cobalt::Serializer-,new(JSON); ## ...same as: my $serializer = Bot::Cobalt::Serializer-,new( Format =, JSON ); ## Serialize ...
The prices of cobalt and tungsten have skyrocketed in recent months because of worries that supply of the vital metals may not ... In Canada, a small firm called Cobalt 27 Capital promotes itself as offering investors "pure-play exposure to cobalt." Shares ... About 10% of current cobalt production goes towards electric car batteries, according to Andries Gerbens, a cobalt specialist ... Cobalt is a byproduct of copper and nickel production, and is not mined on its own. But theres little current demand for new ...
SecurityFocus is designed to facilitate discussion on computer security related topics, create computer security awareness, and to provide the Internet's largest and most comprehensive database of computer security knowledge and resources to the public. It also hosts the BUGTRAQ mailing list.
COBALT is optimized for cases where groups of sequences do match to the same domain (see Query Clustering below). Note: ... This threshold prvents COBALT from forming clusters o unrelated sequences. The distance between two sequences is computed as a ... COBALT computes a multiple protein sequence alignment using conserved domain and local sequence similarity information. [?] ... COBALT is a multiple sequence alignment tool that finds a collection of pairwise constraints derived from conserved domain ...
Modern lives are ruled by mobile devices, from smartphones and tablets, to portable gaming systems and e-readers. Considering these devices need some kind of power source, this means that batteries are what actually have dominion over our daily activities. Battery tech hasnt improved at the rate of the hardware it powers, but the industry has been taking baby steps. Now, Chinese scientists have taken a new baby step that could help batteries store more power.. ...
... but we do not mine any cobalt in this country (we do produce some cobalt by recycling). Cobalt is considered a critical metal ... The United States is the worlds largest consumer of cobalt, ... Unit 2 Reading: Cobalt. *Unit 2 Reading: Lithium and Cobalt ... but we do not mine any cobalt in this country (we do produce some cobalt by recycling). Cobalt is considered a critical metal ... The graph of cobalt price shows a huge spike in the 1970s (in 1998 dollars). The price of cobalt soared primarily because of a ...
  • a b c John Dallas Donaldson, Detmar Beyersmann, "Cobalt and Cobalt Compounds" in Ullmann's Encyclopedia of Industrial Chemistry, Wiley-VCH, Weinheim, 2005. (wikipedia.org)
  • Cobalt and Compounds (7027) -Sampling and measurement data from NMAM, fourth edition. (cdc.gov)
  • Cobalt compounds are also used to color glass, ceramics and paints, and used as a drier for porcelain enamel and paints. (cdc.gov)
  • Some cobalt compounds may dissolve. (cdc.gov)
  • Based on the laboratory animal data, the International Agency for Research on Cancer (IARC) has determined that cobalt and cobalt compounds are possibly carcinogenic to humans. (cdc.gov)
  • International and national guidelines and state regulations regarding exposure to stable cobalt and its compounds are summarized in Table 8-1. (cdc.gov)
  • The EPA has not derived an RfC or RfD for cobalt and compounds. (cdc.gov)
  • IARC (2001b) reports that cobalt and cobalt compounds are possibly carcinogenic to humans (Group 2B), based on sufficient evidence for cobalt metal and cobalt oxides and limited evidence for cobalt chloride and cobalt sulfate. (cdc.gov)
  • For Cobalt Compound: -OSHA Permissible Exposure Limit (PEL): 0.1 mg/m3 (TWA) Cobalt metal dust and fume as Co -ACGIH Threshold Limit Value (TLV): inorganic cobalt compounds: 0.02 mg/m3 (TWA) as Co, A3: Animal carcinogen. (hazard.com)
  • The compounds cobalt silicate and cobalt(II) aluminate (CoAl2O4, cobalt blue) give a distinctive deep blue color to glass, ceramics, inks, paints and varnishes. (wikipedia.org)
  • citation needed] Common oxidation states of cobalt include +2 and +3, although compounds with oxidation states ranging from −3 to +5 are also known. (wikipedia.org)
  • New investigations into the genotoxicity of cobalt compounds and their impact on overall assessment of genotoxic risk. (webmd.com)
  • This specific compound has not been studied for carcinogenicity, but data from similar cobalt compounds indicate that it should be considered as being possibly carcinogenic to humans. (inchem.org)
  • Cobalt demand could surge 700% by 2020 and 14,900% by 2030. (prnewswire.com)
  • Glencore will sell 52,800 tonnes of cobalt hydroxide to GEM between 2018 and 2020 as demand for cobalt, a critical metal in lithium-ion batteries, soars on a forecasted boom in electric vehicle sales. (reuters.com)
  • Glencore expects its cobalt production to rise to 65,000 tonnes in 2019 and dip to 63,000 tonnes in 2020. (reuters.com)
  • The Benchmark Mineral Intelligence reports that 75% of lithium-ion battery cathode capacities are expected to contain some volume of cobalt by 2020. (prnewswire.com)
  • Cobalt is still up nearly fourfold since hitting multi-year lows at the beginning of 2016 as worries about supply of the metal, a crucial element in batteries, combine with expectations of booming demand from the electric vehicle sector. (mining.com)
  • The RCI, which groups high-profile cobalt users such as Apple Inc AAPL.O , Sony Corp 6758.T and Volvo VOLVb.ST , was established under the China Chamber of Commerce of Metals, Minerals and Chemicals Importers and Exporters in 2016. (reuters.com)
  • Expectations of supply shortages have fueled a cobalt rally that has taken prices to around $39 a pound, from near $10 a pound in January 2016 and to their highest level since July 2008, before the financial crisis started. (reuters.com)
  • The report specifies that the Lithium cobalt oxide (LCO) was the leading product segment and was valued at USD 7.15 billion in 2016. (prnewswire.com)
  • citation needed] Four dihalides of cobalt(II) are known: cobalt(II) fluoride (CoF2, pink), cobalt(II) chloride (CoCl2, blue), cobalt(II) bromide (CoBr2, green), cobalt(II) iodide (CoI2, blue-black). (wikipedia.org)
  • The reduction potential for the reaction Co3+ + e− → Co2+ is +1.92 V, beyond that for chlorine to chloride, +1.36 V. Consequently, cobalt(III) and chloride would result in the cobalt(III) being reduced to cobalt(II). (wikipedia.org)
  • A few small studies suggest that taking cobalt chloride 1 mg daily for up to 90 days seems to be safe. (webmd.com)
  • 31-day study of cobalt(II) chloride ingestion in humans: pharmacokinetics and clinical effects. (webmd.com)
  • Cobalt(II) hydride can prepared by reacting phenylmagnesium bromide and cobalt(II) chloride in hydrogen gas: CoCl2 + 2 C6H5MgBr + 2 H2 → CoH2 + 2 C6H6 + MgBr2 + MgCl2 Химическая энциклопедия. (wikipedia.org)
  • This resource provide instruction for preparing your own cobalt chloride indicator papers. (rsc.org)
  • Cobalt chloride is TOXIC and DANGEROUS FOR THE ENVIRONMENT and May cause sensitisation . (rsc.org)
  • a Dissolve 5 g of hydrated cobalt(II) chloride in 100 cm 3 of water (solution is TOXIC). (rsc.org)
  • [1] [2] Structurally materials in this group are closely related to lithium cobalt(III) oxide (LiCoO 2 ) and have a layered structure but possess an ideal charge distribution of Mn(IV), Co(III), and Ni(II) at the 1:1:1 stoichiometry. (wikipedia.org)
  • In 2001, Christopher Johnson, Michael Thackeray, Khalil Amine , and Jaekook Kim filed a patent [9] [10] for lithium nickel manganese cobalt oxide (NMC) lithium rich cathodes based on a Li 2 MnO 3 derived domain structure. (wikipedia.org)
  • [18] For these applications, batteries with lithium cobalt oxide LCO were still used almost exclusively in 2008. (wikipedia.org)
  • Cobalt is a weakly reducing metal that is protected from oxidation by a passivating oxide film. (wikipedia.org)
  • Green cobalt(II) oxide (CoO) has rocksalt structure. (wikipedia.org)
  • At temperatures of 600-700 °C, CoO oxidizes to the blue cobalt(II,III) oxide (Co3O4), which has a spinel structure. (wikipedia.org)
  • Black cobalt(III) oxide (Co2O3) is also known. (wikipedia.org)
  • Cobalt glass-known as "smalt" when ground as a pigment-is a deep blue coloured glass prepared by including a cobalt compound, typically cobalt oxide or cobalt carbonate, in a glass melt. (wikipedia.org)
  • Cobalt oxide smalt appears as a pigment in Egyptian pottery about five centuries later, and soon after in the Aegean region, and this is the pigment normally known as smalt. (wikipedia.org)
  • The process used for producing cobalt smalt glass at the Blaafarveværket industrial manufacturing center in Norway in the 19th century has been documented as smelting cobalt oxide together with quartz and potassium carbonate. (wikipedia.org)
  • It is represented by the molecular formula Co(C2H3O2)2 and can be derived from a reaction between CoO, which is cobalt oxide, and HC2H3O2, which is acetic acid. (reference.com)
  • What Is the Formula for Cobalt II Oxide? (reference.com)
  • Cobalt(II) oxide is represented by the molecular formula CoO. (reference.com)
  • Cobalt consumers are under pressure to ensure the material they use is not tainted by child labour in the Democratic Republic of Congo, the source of about 60 percent of the world's cobalt. (reuters.com)
  • The Democratic Republic of Congo supplies some 60 percent of the world's cobalt -a desperately sought after metal that is the driver of our electric vehicle (EV) boom and the fodder of battery gigafactories popping up all over the world. (prnewswire.com)
  • Cobalt is used to produce alloys used in the manufacture of aircraft engines, magnets, grinding and cutting tools, artificial hip and knee joints. (cdc.gov)
  • Cobalt enters the environment from natural sources and the burning of coal or oil or the production of cobalt alloys. (cdc.gov)
  • or that produce cobalt alloys or use cobalt. (cdc.gov)
  • Cobalt is used in several alloys, including Alnico . (conservapedia.com)
  • Like nickel, cobalt is found in the Earth's crust only in a chemically combined form, save for small deposits found in alloys of natural meteoric iron. (wikipedia.org)
  • Cobalt is primarily used in lithium-ion batteries, and in the manufacture of magnetic, wear-resistant and high-strength alloys. (wikipedia.org)
  • According to the filing, GEM and its subsidiaries will purchase 13,800 tonnes of cobalt hydroxide from Glencore in 2018. (reuters.com)
  • Glencore, whose cobalt is mined as a byproduct from its copper and nickel mines in the Democratic Republic of Congo, Canada and Australia, expects to produce around 39,000 tonnes of cobalt in 2018 - equal to about 35 percent of estimated global production. (reuters.com)
  • Hamilton is one of several areas we plan to explore in 2018 with more than 15,000 metres planned in Cobalt North. (prnewswire.com)
  • In 2018, follow-up exploration at Hamilton , as well as other high grade cobalt targets in the Kerr Lake area, will consist of geochemical surveys as well as ground electromagnetic surveys and induced polarity and resistivity geophysical surveys to potentially map the extent of the vein system. (prnewswire.com)
  • An Associated Press review of complaints to the National Highway Traffic Safety Administration shows that over a nine-year period, 164 drivers reported that their 2005 to 2007 Chevrolet Cobalts stalled without warning. (thestreet.com)
  • Lithium nickel manganese cobalt oxides (abbreviated Li-NMC , LNMC , NMC or NCM ) are mixed metal oxides of lithium , nickel , manganese and cobalt . (wikipedia.org)
  • Several oxides of cobalt are known. (wikipedia.org)
  • Cobalt oxides are antiferromagnetic at low temperature: CoO (Néel temperature 291 K) and Co3O4 (Néel temperature: 40 K), which is analogous to magnetite (Fe3O4), with a mixture of +2 and +3 oxidation states. (wikipedia.org)
  • It is readily oxidized with water and oxygen to brown cobalt(III) hydroxide (Co(OH)3). (wikipedia.org)
  • The Company's main products include tricobalt tetroxide, cobalt hydroxide, cobalt sulfate, lithium anode material ternary precursor and others. (reuters.com)
  • What Is the Formula for Cobalt II Hydroxide? (reference.com)
  • Cobalt(II) hydroxide is written with the chemical formula Co(OH)2. (reference.com)
  • Hygienists (ACGIH) has given cobalt a classification of A3, confirmed animal carcinogen with unknown relevance to humans , and established an 8-hour time-weighted average (TWA) of 0.02 mg/m3 for occupational exposure (ACGIH 2000). (cdc.gov)
  • Stephen DeWitt, as president and chief executive of Cobalt, was instrumental in its growth and subsequent acquisition by Sun Microsystems in 2000. (zdnet.com)
  • Rumours of the new server appliances -- the first major launch under the Cobalt brand since Sun acquired the company in autumn 2000 -- have been circulating for several months. (zdnet.com)
  • Supply risks for cobalt are centred on the Democratic Republic of the Congo which is responsible for nearly two-thirds of world output. (mining.com)
  • The Copperbelt in the Democratic Republic of the Congo (DRC) and Zambia yields most of the global cobalt production. (wikipedia.org)
  • By 2022, due primarily to Chinese investment starting with the 2017 takeover of US-based Freeport McMoRan's Tenke Fungurume mine by China Moly, the DRC will host the nine largest cobalt producers. (mining.com)
  • Meanwhile, shares in the Chinese firm Zhejiang Huayong Cobalt have roughly tripled in 2017. (cnn.com)
  • On July 19, 2017 , CSR reported that an 82-kilogram sample of vein material from the first level was crushed to minus 10 mesh, blended and assayed by SGS Lakefield, and returned 5.7 g/t Au in addition to 46.3 g/t silver and 1.48% cobalt. (newswire.ca)
  • Congo also holds half the world's reserves of cobalt which is almost always mined as a by-product of copper and nickel. (mining.com)
  • The China-Congo-Cobalt-nexus poses particular problems for tech companies like Apple and automakers in the US and Europe which has been scrambling to secure supply. (mining.com)
  • This could lead to premium pricing for cobalt produced outside Congo. (mining.com)
  • The Democratic Republic of Congo, which has vast natural resources but a reputation for instability, mines about 60% of the world's cobalt. (cnn.com)
  • Congo is again the main world producer of cobalt). (carleton.edu)
  • China's Huayou Cobalt will not buy artisanal cobalt from two mines in Democratic Republic of Congo until it is sure the material they produce is free of human rights abuses according to standards to be decided by the industry. (reuters.com)
  • China's biggest cobalt refiner Zhejiang Huayou Cobalt said on Thursday its overseas unit is pulling out a deal to invest $66.3 million in a cobalt mine in the Democratic Republic of Congo (DRC) after prices of the metal slid. (reuters.com)
  • China's Zhejiang Huayou Cobalt Co will invest $147.2 million to build a copper project in Democratic Republic of Congo (DRC), as it extends the exploration of its mining assets in the country, the company said in a filing to the Shanghai stock exchange on Tuesday. (reuters.com)
  • Liver and kidney effects have also been observed in animals exposed to high levels of cobalt. (cdc.gov)
  • Usually you have to be exposed to high levels of cobalt for weeks to months to have symptoms. (medlineplus.gov)
  • Cobat sulfate, also known as cobaltous sulfate or cobalt(II) sulfate, is the divalent cobalt salt of sulfuric acid. (reference.com)
  • Radioactive cobalt is used for commercial and medical purposes. (cdc.gov)
  • Radioactive decay is a way of decreasing the amount of radioactive cobalt in the environment. (cdc.gov)
  • The general population is rarely exposed to radioactive cobalt unless a person is undergoing radiation therapy. (cdc.gov)
  • Exposure to large amounts of radiation from radioactive cobalt can damage cells in your body from the radiation. (cdc.gov)
  • The regulations regarding radioactive cobalt are summarized in Table 8-2. (cdc.gov)
  • Radioactive Cobalt. (cdc.gov)
  • No MRLs were derived for inhalation or oral exposure to radioactive cobalt. (cdc.gov)
  • cases of radiation accidents involving radioactive cobalt. (ilo.org)
  • Radioactive cobalt-60 is also useful to treat cancer and in some countries, to irradiate food for preservation. (conservapedia.com)
  • It is produced by inserting a 'target' rod rich in non-radioactive cobalt-59 into a reactor core where free neutrons will be captured, turning cobalt-59 into cobalt-60. (world-nuclear-news.org)
  • Cobalt salts have been used for centuries to give pottery and other items a blue color. (conservapedia.com)
  • We are about to inherit some cobalt raq or qube serves from another company. (mail-archive.com)
  • Sun Microsystems, Inc. has announced an aggressive upgrade program to enable current Microsoft Windows NT Server 4.0 customers to easily trade up to Sun Cobalt RaQ server appliances or Sun Cobalt Qube appliances. (linuxjournal.com)
  • The Sun Cobalt Qube 3 server appliance extends secure internet and intranet services to consumers and power users. (linuxjournal.com)
  • Customers also can leverage the firewall technology included with the Sun Cobalt Qube appliance to prevent unauthorized access to company systems and data. (linuxjournal.com)
  • Cobalt is produced as a byproduct of copper mining in the region of Shaba. (carleton.edu)
  • As well as the anhydrous compound Co(NO 3 ) 2 , several hydrates of cobalt(II) nitrate exist. (wikipedia.org)
  • Anhydrous cobalt(II) nitrate adopts a three-dimensional polymeric network structure, with each cobalt(II) atom approximately octahedrally coordinated by six oxygen atoms, each from a different nitrate ion. (wikipedia.org)
  • In its anhydrous state, cobalt(II) acetate has a molar mass of 177.02 grams per mole. (reference.com)
  • LONDON (Reuters) - German carmaker Daimler DAIGn.DE has joined the Responsible Cobalt Initiative, a programme established under a Chinese industry body to tackle risks in the cobalt supply chain arising from artisanal mining. (reuters.com)
  • Reuters) - Cobalt 27 Capital Corp ( KBLT.V ), a Canadian company created to buy the red-hot battery metal, said on Thursday it has bought a royalty on all future nickel and cobalt production from the Dumont project in Quebec in a deal worth $70 million. (reuters.com)
  • Reuters) - Glencore Plc, the world's biggest producer of cobalt, has agreed to sell around a third of its cobalt production over the next three years to Chinese battery recycler GEM Co Ltd, according to a filing by GEM on Wednesday. (reuters.com)
  • Reuters reported last week that Glencore was in talks to sell around a quarter of its cobalt output in a one-year deal to GEM, according to sources. (reuters.com)
  • Cobalt(II) hydride is an inorganic compound with a chemical formula CoH2. (wikipedia.org)
  • The compound is formed by the combination of one ion of cobalt(II) and two ions of hydro. (reference.com)
  • Cobalt-based blue pigments (cobalt blue) 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 to be due to the known metal bismuth. (wikipedia.org)
  • Cobalt toxicity - an emerging clinical problem in patients with metal-on-metal hip prostheses? (mja.com.au)
  • We report two Australian patients with possible cobalt toxicity related to metal-on-metal total hip replacements. (mja.com.au)
  • These metal particles (ions) can get released into the hip socket and sometimes the bloodstream, causing cobalt toxicity. (medlineplus.gov)
  • Leyssens L, Vinck B, Van Der Straeten C, Wuyts F, Maes L. Cobalt toxicity in humans-A review of the potential sources and systemic health effects. (webmd.com)
  • Although the overall number of complaints represents only 0.02% of the nearly 625,000 Cobalts sold from 2005 to 2007 in the U.S., experts familiar with NHTSA say they were enough to warrant an investigation and recall. (thestreet.com)
  • This work has supported the potential for high-grade cobalt mineralization which will optimize locations for additional bulk sampling and planned underground drilling once portions of drift are rehabilitated as per OHS standards. (newswire.ca)
  • Just earlier today the company announced, 'high grade cobalt assays up to 2.01% cobalt from surface sampling near the past producing Hamilton mine in Cobalt North. (prnewswire.com)
  • Cobalt is a byproduct of copper and nickel production, and is not mined on its own. (cnn.com)
  • The United States is the world's largest consumer of cobalt, but we do not mine any cobalt in this country (we do produce some cobalt by recycling). (carleton.edu)
  • The transaction is for a 1.75 percent net smelter return royalty on output from Dumont, which contains the world's largest undeveloped nickel and cobalt reserves, Cobalt 27 Capital said. (reuters.com)
  • Useful search terms for cobalt include "cobalt metal dust," "cobalt metal powder," "cobalt metal fume," and "elemental cobalt. (cdc.gov)
  • Immediately Dangerous to Life or Health (IDLH) Values of Cobalt Metal Dust and Flame -NIOSH reviews relevant scientific data and researches methods for developing IDLH values. (cdc.gov)
  • Occupational Health Guideline for Cobalt Metal Fume and Dust -This guideline helps stakeholders conduct effective occupational safety and health programs. (cdc.gov)
  • Breathing in this cobalt dust can lead to chronic lung problems. (medlineplus.gov)
  • Inhalation of cobalt dust and fumes is associated with an increased incidence of lung disease. (hazard.com)
  • Cobalt might cause heart problems, lung disease, hearing loss, and vision loss in people who are exposed to cobalt dust in certain industries. (webmd.com)
  • The price of cobalt has been drifting after hitting near 10-year peaks in March to exchange hands for $91,000 a tonne on Friday. (mining.com)
  • The price of cobalt as a function of time. (carleton.edu)
  • The price of cobalt soared primarily because of a supply shortage. (carleton.edu)
  • Before the price of cobalt spiked in the late 1970s, samarium-cobalt magnets were used to make sound in speakers and phones, and used in electric motors. (carleton.edu)
  • Two forms of cobalt(II) hydride exist under high pressure. (wikipedia.org)
  • Having high amounts of cobalt for long periods of time could affect the heart and might decrease fertility in men. (nidirect.gov.uk)
  • Also, taking large amounts of cobalt or using it for longer than 90 days can be unsafe. (webmd.com)
  • Provides a unique survey of the information contained in the patent literature concerning solvent extraction of nickel and cobalt. (elsevier.com)
  • The DRC today has six of the top 10 cobalt mines globally. (mining.com)
  • Castle Silver Resources Inc. (formerly Takara Resources Inc.) is a TSX Venture-listed junior natural resource company focusing on the exploration and development of former silver and cobalt mine properties in northern Ontario including the Castle Silver mine near Gowganda and the Beaver and Violet mines near Cobalt. (newswire.ca)
  • Hamilton is one of 50 mines that First Cobalt controls in the Cobalt Camp. (prnewswire.com)
  • The Hamilton area has not been active since 1956 due to the generally low silver content compared to other historic mines nearby in Cobalt North, such as Silverfields, Nipissing and Crown Reserve. (prnewswire.com)
  • Sun Cobalt world-wide retailers, effective immediately, will be taking part in the NT Upgrade Campaign, which ends June 30, 2002. (linuxjournal.com)
  • Cobalt oxalate dihydrate crystallizes during prepicitation as an orthorombic ß-phase. (springer.com)
  • Cobalt is a key ingredient in rechargeable lithium-ion batteries used for electric vehicles. (reuters.com)
  • The Company's principal business includes the manufacture of lithium-ion new energy materials, the deep processing of cobalt new materials, and the mining, beneficiation and smelting of cobalt and copper. (reuters.com)
  • Cobalt is a crucial component of the lithium-ion battery market. (prnewswire.com)
  • A cobalt group element atom that has atomic number 27. (ebi.ac.uk)
  • Cobalt is a chemical element with the symbol Co and atomic number 27. (wikipedia.org)
  • Exposure to cobalt may cause cancer. (cdc.gov)
  • Workers may be harmed from exposure to cobalt and cobalt-containing products. (cdc.gov)
  • The following resources provide information about occupational exposure to cobalt. (cdc.gov)
  • NIOSH Occupational Hazard Assessment: Criteria for Controlling Exposure to Cobalt -DHHS (NIOSH) Publication No. 82-107. (cdc.gov)
  • This report increases awareness and recommends work practices to reduce exposure to the toxic effects of cobalt and degree of worker exposure to substances containing cobalt. (cdc.gov)
  • Food and drinking water are the largest sources of exposure to cobalt for the general population. (cdc.gov)
  • Exposure to high levels of cobalt can result in lung and heart effects and dermatitis. (cdc.gov)
  • Nonradioactive cobalt has not been found to cause cancer in humans or animals following exposure in food or water. (cdc.gov)
  • Exposure to high levels of cobalt radiation can cause changes in the genetic materials within cells and may result in the development of some types of cancer. (cdc.gov)
  • We do not know if exposure to cobalt will result in birth defects or other developmental effects in people. (cdc.gov)
  • An MRL of 1x10-4 mg cobalt/m3 has been derived for chronic-duration inhalation exposure. (cdc.gov)
  • If you swallowed a large amount of cobalt, or you are starting to feel sick from long-term exposure, you should go to an emergency room. (medlineplus.gov)
  • In Canada, a small firm called Cobalt 27 Capital promotes itself as offering investors "pure-play exposure to cobalt. (cnn.com)
  • Taking cobalt in higher doses or for longer periods of time is POSSIBLY UNSAFE . (webmd.com)
  • Moderately ground cobalt glass (potassium cobalt silicate)-called "smalt"-has been historically important as a pigment in glassmaking, painting, pottery, for surface decoration of other types of glass and ceramics, and other media. (wikipedia.org)
  • Changes taking place in the thermomagnetic parameters α and β of thin iron-cobalt films during the transition from the close-packed γ and ε phases to the bcc phase based on α -Fe are considered. (springer.com)
  • If you work in an industry that uses cobalt, please read chemical labels and the accompanying Safety Data Sheets for hazard information. (cdc.gov)
  • The patient's original hip replacement had been done in 2006 with an ASR (articular surface replacement) hip prosthesis (ASR XL Acetabular Hip System [DePuy Orthopaedics, Warsaw, Ind, USA]), comprising a large-diameter metal (cobalt and chromium) cup with a large modular metal head on a titanium Corail stem ( Box ). (mja.com.au)
  • The chemical complexities of the more common metals have made this research a challenge, but the Los Alamos paper holds out hope that the earth-abundant metal cobalt can serve in place of its pricier relatives. (lanl.gov)
  • was a professional and depth research report on Global Cobalt Powder industry that you would know the world's major regional market conditions of Cobalt Powder industry, the main region including North American, Europe and Asia etc, and the main country including United States ,Germany ,Japan and China etc. (gosreports.com)
  • In the end, the report introduced Cobalt Powder new project SWOT analysis, investment feasibility analysis, and investment return analysis and Global Cobalt Powder industry. (gosreports.com)
  • In a word, it was a depth research report on Global Cobalt Powder industry. (gosreports.com)
  • Mining was interrupted in 1977 when separatists invaded Shaba and this supply disruption caused the spike in global cobalt prices (and, sadly, the uprising also killed more than 800 people). (carleton.edu)
  • And that's just one project in this massive cobalt belt. (prnewswire.com)
  • 2004. Toxicological profile for cobalt. (cdc.gov)
  • The breakthrough by the Los Alamos team was to capture the cobalt atom in a complex molecule in such a way that it can mimic the reactivity of precious metal catalysts, and do so in a wide range of circumstances. (lanl.gov)
  • Cobalt aluminate, also known as "cobalt blue", can be used in a similar way. (wikipedia.org)
  • Sun said the RCI plans to set standards for a clean supply chain for cobalt, adding that firms in the industry should be given time to resolve problems associated with artisanal mining. (reuters.com)
  • The supply chain will respond by producing more artisanal material," one cobalt industry source said. (reuters.com)
  • Phase 1 drilling from surface at Castle, expanded beyond the originally planned 1,500 meters, was primarily designed to gain a greater understanding of structures carrying potential cobalt mineralization in underground portions of the Castle mine and at shallow levels within approximately 200 meters of the main adit. (newswire.ca)
  • According to the company, the cobalt mineralization here is striking. (prnewswire.com)
  • The Kahuna Cobalt-Silver property, covering 77 claims over 1,200 hectares, has also seen mineralization of cobalt discovered in past work. (prnewswire.com)
  • Troubles are also mounting for top cobalt producer Glencore. (mining.com)
  • The state-run company Gecamines was a huge cobalt (and copper) producer but had allowed their equipment to age. (carleton.edu)
  • NIOSHTIC-2 search results on cobalt -NIOSHTIC-2 is a searchable database of worker safety and health publications, documents, grant reports, and journal articles supported in whole or in part by NIOSH. (cdc.gov)
  • Amnesty International says about a fifth of the country's cobalt production is mined by hand by informal miners including children, often in dangerous conditions. (reuters.com)
  • A century later, with political instability, war and working conditions that have everyone using conflict cobalt under major scrutiny, miners are coming back to this North American venue in droves. (prnewswire.com)
  • China, despite having no cobalt resources of its own, is responsible for 80% of the world's cobalt chemical production, which overtook metal production around four years ago. (mining.com)
  • Cobalt, like iron and other transition metals in the Periodic Table, is cheap and relatively abundant, but it has a propensity to undergo irreversible reactions rather than emerging unchanged from chemical reactions as is required of an effective catalyst. (lanl.gov)
  • Cobalt (Co) is a hard, gray metal that occurs naturally. (cdc.gov)
  • The most worrisome form of cobalt poisoning occurs when you breathe it into your lungs. (medlineplus.gov)
  • Cobalt poisoning that occurs from constant contact with your skin will likely cause irritation and rashes that go away slowly. (medlineplus.gov)
  • Cobalt occurs naturally as only one stable isotope, cobalt-59. (wikipedia.org)
  • Metallic cobalt occurs as two crystallographic structures: hcp and fcc. (wikipedia.org)
  • Cobalt poisoning can occur when you are exposed to large amounts of it. (medlineplus.gov)
  • This usually will only happen in industrial settings where large amounts of drilling, polishing, or other processes release fine particles containing cobalt into the air. (medlineplus.gov)
  • What Is Cobalt II Acetate? (reference.com)
  • Cobalt(II) acetate is a salt made by combining cobalt(II) and acetic acid. (reference.com)
  • As a solid, cobalt(II) acetate appears as a pink crystal or crystalline powder and has a vinegar-like odor. (reference.com)
  • Cobalt is a naturally occurring element in the earth's crust. (medlineplus.gov)