Chromium Radioisotopes
Chromium
Radioisotopes
Zinc Radioisotopes
Radioisotope Dilution Technique
Strontium Radioisotopes
Iodine Radioisotopes
Chromium Alloys
Krypton Radioisotopes
Indium Radioisotopes
Sodium Radioisotopes
Radioactivity
Barium Radioisotopes
Radionuclide Imaging
The production of an image obtained by cameras that detect the radioactive emissions of an injected radionuclide as it has distributed differentially throughout tissues in the body. The image obtained from a moving detector is called a scan, while the image obtained from a stationary camera device is called a scintiphotograph.
Yttrium Radioisotopes
Tin Radioisotopes
Potassium Dichromate
Chromic acid (H2Cr2O7), dipotassium salt. A compound having bright orange-red crystals and used in dyeing, staining, tanning leather, as bleach, oxidizer, depolarizer for dry cells, etc. Medically it has been used externally as an astringent, antiseptic, and caustic. When taken internally, it is a corrosive poison.
Carbon Radioisotopes
Iron Radioisotopes
Copper Radioisotopes
Phosphorus Radioisotopes
Chromium Isotopes
Tanning
A process of preserving animal hides by chemical treatment (using vegetable tannins, metallic sulfates, and sulfurized phenol compounds, or syntans) to make them immune to bacterial attack, and subsequent treatments with fats and greases to make them pliable. (McGraw-Hill Dictionary of Scientific and Technical Terms, 5th ed)
Technetium
The first artificially produced element and a radioactive fission product of URANIUM. Technetium has the atomic symbol Tc, atomic number 43, and atomic weight 98.91. All technetium isotopes are radioactive. Technetium 99m (m=metastable) which is the decay product of Molybdenum 99, has a half-life of about 6 hours and is used diagnostically as a radioactive imaging agent. Technetium 99 which is a decay product of technetium 99m, has a half-life of 210,000 years.
Mercury Radioisotopes
Technetium Tc 99m Sulfur Colloid
Cesium Isotopes
Cerium Radioisotopes
Cobalt Isotopes
Hafnium
Gold Radioisotopes
Isotope Labeling
Lead Radioisotopes
Diagnostic Techniques, Radioisotope
Zinc Isotopes
Sulfur Radioisotopes
Cadmium Radioisotopes
Astatine
Radioimmunotherapy
Radiotherapy where cytotoxic radionuclides are linked to antibodies in order to deliver toxins directly to tumor targets. Therapy with targeted radiation rather than antibody-targeted toxins (IMMUNOTOXINS) has the advantage that adjacent tumor cells, which lack the appropriate antigenic determinants, can be destroyed by radiation cross-fire. Radioimmunotherapy is sometimes called targeted radiotherapy, but this latter term can also refer to radionuclides linked to non-immune molecules (see RADIOTHERAPY).
Lutetium
Spectrometry, Gamma
Samarium
Radiopharmaceuticals
Diphenylcarbazide
Bromine Radioisotopes
Scintillation Counting
Spectrophotometry, Atomic
Subdural Effusion
Calcium Isotopes
Radioactive Waste
Liquid, solid, or gaseous waste resulting from mining of radioactive ore, production of reactor fuel materials, reactor operation, processing of irradiated reactor fuels, and related operations, and from use of radioactive materials in research, industry, and medicine. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
Metals, Heavy
Serum Albumin, Radio-Iodinated
Nickel
Ruthenium Radioisotopes
Water Pollutants, Chemical
Radiometric Dating
Tissue Distribution
Accumulation of a drug or chemical substance in various organs (including those not relevant to its pharmacologic or therapeutic action). This distribution depends on the blood flow or perfusion rate of the organ, the ability of the drug to penetrate organ membranes, tissue specificity, protein binding. The distribution is usually expressed as tissue to plasma ratios.
Cobalt
Stainless Steel
Selenium Radioisotopes
Alpha Particles
Heterocyclic Compounds, 1-Ring
Sodium Pertechnetate Tc 99m
Tungsten
Tungsten. A metallic element with the atomic symbol W, atomic number 74, and atomic weight 183.85. It is used in many manufacturing applications, including increasing the hardness, toughness, and tensile strength of steel; manufacture of filaments for incandescent light bulbs; and in contact points for automotive and electrical apparatus.
Isotopes
Radioisotope Teletherapy
Pentetic Acid
Organometallic Compounds
Nuclear Medicine
Technetium Tc 99m Pentetate
Hazardous Waste
Radiometry
Rosaniline Dyes
Nostoc commune
Soil Pollutants
Air Pollutants, Occupational
Metals
Trace Elements
Potassium Radioisotopes
Potentiation of anti-cancer drug activity at low intratumoral pH induced by the mitochondrial inhibitor m-iodobenzylguanidine (MIBG) and its analogue benzylguanidine (BG). (1/428)
Tumour-selective acidification is of potential interest for enhanced therapeutic gain of pH sensitive drugs. In this study, we investigated the feasibility of a tumour-selective reduction of the extracellular and intracellular pH and their effect on the tumour response of selected anti-cancer drugs. In an in vitro L1210 leukaemic cell model, we confirmed enhanced cytotoxicity of chlorambucil at low extracellular pH conditions. In contrast, the alkylating drugs melphalan and cisplatin, and bioreductive agents mitomycin C and its derivative EO9, required low intracellular pH conditions for enhanced activation. Furthermore, a strong and pH-independent synergism was observed between the pH-equilibrating drug nigericin and melphalan, of which the mechanism is unclear. In radiation-induced fibrosarcoma (RIF-1) tumour-bearing mice, the extracellular pH was reduced by the mitochondrial inhibitor m-iodobenzylguanidine (MIBG) or its analogue benzylguanidine (BG) plus glucose. To simultaneously reduce the intracellular pH, MIBG plus glucose were combined with the ionophore nigericin or the Na+/H+ exchanger inhibitor amiloride and the Na+-dependent HCO3-/Cl- exchanger inhibitor 4,4'-diisothiocyanostilbene-2,2'-disulphonic acid (DIDS). Biochemical studies confirmed an effective reduction of the extracellular pH to approximately 6.2, and anti-tumour responses to the interventions indicated a simultaneous reduction of the intracellular pH below 6.6 for at least 3 h. Combined reduction of extra- and intracellular tumour pH with melphalan increased the tumour regrowth time to 200% of the pretreatment volume from 5.7 +/- 0.6 days for melphalan alone to 8.1 +/- 0.7 days with pH manipulation (P < 0.05). Mitomycin C related tumour growth delay was enhanced by the combined interventions from 3.8 +/- 0.5 to 5.2 +/- 0.5 days (P < 0.05), but only in tumours of relatively large sizes. The interventions were non-toxic alone or in combination with the anti-cancer drugs and did not affect melphalan biodistribution. In conclusion, we have developed non-toxic interventions for sustained and selective reduction of extra- and intracellular tumour pH which potentiated the tumour responses to selected anti-cancer drugs. (+info)Effect of obesity on red cell mass results. (2/428)
Measurement of red cell mass with isotope dilution remains an important diagnostic test in the evaluation of patients with suspected polycythemia vera (PCV). Results and reference ranges are typically expressed in units normalized for body weight (mL/kg). Obesity is common in polycythemic patients, and it is important to know how the various published normative ranges compare across a wide range of body weights. METHODS: We retrospectively reviewed 51 consecutive patients referred for red cell mass determination with 51Cr red blood cell dilution. Results were expressed in milliliters per kilogram (mL/kg) by using the actual patient weight and after adiposity adjustments using ideal body weight, body mass index (BMI) and combinations of height-weight, including body surface area. Results were classified as normal, elevated or PCV. RESULTS: There was a high prevalence of obesity in our population (28/51 [55%] with BMI > 27 kg/m2, BMI range 16.0-54.8 kg/m2). The method used to compensate for obesity had a dramatic effect on the derived red cell mass, the fraction of patients with elevated measurements and the fraction of patients meeting criteria for PCV. Concordance for categorization as normal, elevated or PCV by all methods was only 47.1%. CONCLUSION: Obesity is a common confounding factor in the interpretation of red cell mass measurements. Currently published reference ranges generate inconsistent results when extrapolated to obese patients. Further normative data on obese subjects are needed to determine which method (if any) is optimal. (+info)Role of antioxidant defenses against ethanol-induced damage in cultured rat gastric epithelial cells. (3/428)
Reactive oxygen species appears to be involved in the pathogenesis of ethanol-induced gastric mucosal injury in vivo. Because ingested ethanol diffuses into the gastric mucosa, targeting both epithelium and endothelium, in the present study we examined the possible protective effect of antioxidants on ethanol damage in gastric epithelial cells and endothelial cells in vitro. Cytotoxicity by ethanol was quantified by measuring 51Cr release. The effects of impairment of the glutathione redox cycle and of inhibition of cellular catalase were examined. The generation of superoxide was assessed by the reduction in cytochrome c. Ethanol caused a time- and dose-dependent increase in 51Cr release from epithelial cells. Incubation of cells with DL-buthionine-(S,R)-sulfoximine, while reducing glutathione production, dose dependently enhanced ethanol-induced injury. 1,3-Bis(chloroethyl)-nitrosourea, while inhibiting glutathione reductase activity, also sensitized cells to ethanol. In contrast, the inhibition of catalase with 3-amino-1,2, 4-triazole did not alter the susceptibility of epithelial cells to ethanol. Ethanol induced damage to endothelial cells in a similar fashion. In endothelial cells, however, neither impairment of the glutathione cycle nor inhibition of catalase influenced ethanol-induced damage. Epithelial cells, when exposed to ethanol, increased superoxide production as a function of ethanol concentration, whereas endothelial cells did not. The glutathione redox cycle, but not cellular catalase, plays a critical role in protecting epithelial cells against ethanol damage, whereas neither antioxidant seems to play a role in protection of endothelial cells. The distinct difference in antioxidant protection against ethanol appears to depend on the capability of each cell to produce cytotoxic oxygen species in response to ethanol exposure. (+info)High predictive value of red cell volume measurement using carboxy-haemoglobin in a rabbit model of haemorrhage. (4/428)
We have studied the accuracy of blood volume measurements using carbon monoxide (CO)-labelled haemoglobin (COHb) injection and dilution (CO method) by comparing changes in red cell volume (RCV) measured using the CO method and 51Cr-labelled erythrocyte dilution (51Cr method) in a haemorrhage and infusion model in rabbits. RCV was measured repeatedly using the CO method at four different blood volume stages (stages I-IV). At stages I and IV, RCV was measured simultaneously using the 51Cr method. In comparing the sum of the circulating RCV and extracted RCV (SUM RCV) using the CO method, the values were almost equal and there were no significant differences between the values at the four stages. In comparing circulating RCV measured using the CO method and the 51Cr method, mean difference between the two methods was 0.80 (SD 0.76) ml kg-1 or 4.7 (4.6)%, and a positive correlation was observed (r = 0.91). We conclude that the CO method can be used to measure blood volume during perioperative periods in infants because it avoids use of a radioactive tracer, is simple and repeated measurements are possible. (+info)Urokinase receptor (uPAR, CD87) is a platelet receptor important for kinetics and TNF-induced endothelial adhesion in mice. (5/428)
BACKGROUND: Urokinase plasminogen activator receptor (uPAR, CD87) is a widely distributed 55-kD, glycoprotein I-anchored surface receptor. On binding of its ligand uPA, it is known to increase leukocyte adhesion and traffic. Using genetically deficient mice, we explored the role of uPAR in platelet kinetics and TNF-induced platelet consumption. METHODS AND RESULTS: Anti-uPAR antibody stained platelets from normal (+/+) but not from uPAR-/- mice, as seen by fluorescence-activated cell sorter analysis. 51Cr-labeled platelets from uPAR-/- donors survived longer than those from +/+ donors when injected into a +/+ recipient. Intratracheal TNF injection induced thrombocytopenia and a platelet pulmonary localization, pronounced in +/+ but absent in uPAR-/- mice. Aprotinin, a plasmin inhibitor, decreased TNF-induced thrombocytopenia. TNF injection markedly reduced the survival and increased the pulmonary localization of 51Cr-labeled platelets from +/+ but not from uPAR-/- donors, indicating that it is the platelet uPAR that is critical for their response to TNF. As seen by electron microscopy, TNF injection increased the number of platelets and polymorphonuclear neutrophils (PMNs) in the alveolar capillaries of +/+ mice, whereas in uPAR-/- mice, platelet trapping was insignificant and PMN trapping was slightly reduced. Platelets within alveolar capillaries of TNF-injected mice were activated, as judged from their shape, and this was evident in +/+ but not in uPAR-/- mice. CONCLUSIONS: These results demonstrate for the first time the critical role of platelet uPAR for kinetics as well as for activation and endothelium adhesion associated with inflammation. (+info)Role of 5-lipoxygenase products in the local accumulation of neutrophils in dermal inflammation in the rabbit. (6/428)
Studies were undertaken to define the role of 5-lipoxygenase (5-LO) products and, in particular, of leukotriene (LT) B4 in the polymorphonuclear leukocyte (PMN) emigration process using a rabbit model of dermal inflammation. Our results show that i.v. administration to rabbits of MK-0591, a compound that inhibits LT biosynthesis in blood and tissues when administered in vivo, significantly reduced 51Cr-labeled PMN accumulation in response to intradermally injected chemotactic agonists, including IL-8, FMLP, C5a, and LTB4 itself. In addition, pretreatment of the labeled PMN with MK-0591 ex vivo before their injection in recipient animals was equally effective in reducing 51Cr-labeled PMN emigration to dermal inflammatory sites. These results support a role for de novo synthesis of 5-LO metabolites by PMN for their chemotactic response to inflammatory mediators. Other studies demonstrated that elevated intravascular concentration of LTB4 interferes with PMN extravasation inasmuch as a continuous i.v. infusion of LTB4, in the range of 5-300 ng/min/kg, dose-dependently inhibited extravascular PMN accumulation to acute inflammatory skin sites elicited by the chemoattractants LTB4, FMLP, C5a, and IL-8 and by TNF-alpha, IL-1beta, and LPS; such phenomena may constitute a natural protective mechanism from massive tissue invasion by activated PMN in specific pathologic conditions such as ischemia (and reperfusion). These studies demonstrate additional functions of 5-LO products in the regulation of PMN trafficking, distinct from the well-characterized chemotactic activity of LTB4 present in the extravascular compartment. (+info)Impaired autoregulation of the glomerular filtration rate in patients with nondiabetic nephropathies. (7/428)
BACKGROUND: The ability of the kidney to maintain constancy of the glomerular filtration rate (GFR) over a wide range of renal perfusion pressures is termed autoregulation. Defective autoregulation of GFR has been demonstrated in diabetic nephropathy. Whether this is also the case in patients with nondiabetic nephropathies is not known. METHODS: We investigated the effect of acute lowering of blood pressure (BP) on GFR in 16 (8 males and 8 females) albuminuric subjects suffering from different nondiabetic nephropathies and in 14 (7 males and 7 females) controls matched with respect to sex, age, BP, and baseline GFR. The subjects received in random order an intravenous injection of either clonidine (150 to 225 microg) or saline (0.154 mmol/liter) within two weeks. We measured GFR ([51Cr]-EDTA), albuminuria (enzyme-linked immunosorbent assay; ELISA), and BP (Takeda TM-2420). RESULTS: Clonidine induced similar reductions in mean arterial BP 17 (2) versus 19 (2) mm Hg [mean (SE)] in patients with nephropathy and in controls, respectively. GFR diminished in average from 89 (6) to 82 (5) ml/min/1.73 m2 (P < 0.05), and albuminuria declined from a geometric mean of 1218 (antilog SE 1.3) microg/min to 925 (1.3) in the patients with nondiabetic nephropathies (P < 0.05), whereas these variables remained unchanged in the control group. The mean difference between changes in GFR (95% confidence interval) between the nondiabetic macroalbuminuric and control subjects was 6.1 (-0.03 to 12.21) ml/min/1.73 m2 (P = 0.051). CONCLUSION: Our study suggests that albuminuric patients with nondiabetic nephropathies frequently suffer from impaired autoregulation of GFR. (+info)Injurious effect of Helicobacter pylori culture fluid to gastroduodenal mucosa, and its detoxification by sucralfate in the rat. (8/428)
BACKGROUND: Helicobacter pylori plays an important role in the pathogenesis of peptic ulcer. Although several cytotoxins related to H. pylori have been reported, their effects on gastroduodenal mucosa have not been well evaluated in vivo. AIM: To investigate the effects of the combination of acid and toxic substances derived from H. pylori on gastroduodenal mucosa, and to observe the effect of sucralfate on such factors in the rat. METHODS: Male Sprague-Dawley rats were fasted overnight and anaesthetized. The pylorus was ligated, and a double-lumen cannula was inserted into the forestomach for gastric luminal perfusion. In other animals, a cannula was inserted to perfuse the proximal duodenum. 51Cr-EDTA was administered intravenously and mucosal integrity was monitored by measuring the blood-to-lumen 51Cr-EDTA clearance. After 72 h of culture of H. pylori (NCTC11637 and Sydney strain 1), Brucella broth containing 3% FBS was filtered to remove the bacteria (supernate of H. pylori culture fluid; HPsup). HPsup was acidified (pH=2.0) with HCl, and tested for its injurious action on gastric or duodenal mucosa by luminal perfusion. HPsup was incubated with sucralfate for 30 min. The supernate was collected by centrifugation and the pH was readjusted to 2.0. This sucralfate-treated HPsup was used to test the effect of sucralfate against H. pylori-related mucosal injurious factors. RESULTS: Non-acidified and acidified HPsup did not cause any detectable injury to the gastric mucosa. Non-acidified HPsup did not cause injury in the duodenal mucosa. However, acidified HPsup induced a significantly greater increase in 51Cr-EDTA clearance and greater histological damage than in controls. Sucralfate completely reversed this. CONCLUSION: These results suggest that an H. pylori-related toxic substance may aggravate duodenal acid injury by acting on luminal surfaces, and that the detoxification of this substance by sucralfate may contribute to its anti-ulcer action. (+info)
Chromium-51 Radionuclide, 5mCi (185MBq), Sodium Chromate in Normal Saline (pH 8-10), Steri-packaged | PerkinElmer
Chromium-51 Radionuclide, 5mCi, EDTA Complex in 0.005M EDTA (pH 7.0) | PerkinElmer
Ribbon-Cutting Ceremony Celebrates Completion of Chromium-6 Treatment Plant - Cal Water
Cancer Causing Chromium-6 Found In 75% Of Drinking Water In America - Infinite Unknown
chromium-54 - definition and meaning
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The Modern View of Atomic Structure; Atomic | Ch 2 - 24E | StudySoup
Estimation of residual glomerular filtration rate in peritoneal dialysis patients using cystatin C: comparison with 51Cr-EDTA...
A 7.500-mg sample of chromium-55 is analyzed after 14.0 min. and found
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The validity of the indicator dilution method for measuring the capillary diffusion capacity for 51Cr-EDTA in hyperaemic...
Optimized siRNA-PEG conjugates for extended blood circulation and reduced urine excretion in mice. | Sigma-Aldrich
Erythrocyte Turnover | Williams Hematology, 9e | AccessHemOnc | McGraw-Hill Medical
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Determination of Glomerular Filtration Rate by Controlled Infusion of 51 Cr-EDTA - Lund University
Characterization of anti-anti-idiotypic antibodies that bind antigen and an anti-idiotype (antigen mimicryythree-dimensional...
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Chemical Burn
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Diuretic
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Extent of oxidative modification of low density lipoprotein determines the degree of cytotoxicity to human coronary artery...
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Volume 45 (1999) No. 5 - Folia Biologica - Specialized biological journal
Thinking of unusual milk production constantly keep in mind fluoxetine
Antibody-dependent cellular cytotoxicity
The classical method of detecting this is the Chromium-51 [51Cr] release assay; the Sulfur-35 [35S] release assay is a little ... used radioisotope-based alternative. Target cell lysis is determined by measuring the amount of radiolabel released into the ...
Castell's sign
The spleen of each patient was then quantitatively measured using chromium-labeled erythrocytes and radioisotope photoscan of ...
Heavy metals
Chromium crystals and 1 cm3 cube Arsenic, sealed in a container to stop tarnishing Cadmium bar and 1 cm3 cube Mercury being ... heavy metals are also employed as spallation targets for the production of neutrons or radioisotopes such as astatine (using ... Chromium, arsenic, cadmium, mercury, and lead have the greatest potential to cause harm on account of their extensive use, the ... Hexavalent chromium, for example, is highly toxic as are mercury vapour and many mercury compounds. These five elements have a ...
Inulin
... the chromium radioisotope 51Cr (chelated with EDTA), and creatinine, have had their utility confirmed in large cohorts of ...
Corium (nuclear reactor)
The zirconium-rich phase was found around the pores and on the grain boundaries and contains some iron and chromium in the form ... An eventually present layer of more dense molten metal, containing fewer radioisotopes (Ru, Tc, Pd, etc., initially composed of ... The inclusion of iron and chromium rich regions probably originate from a molten nozzle that did not have enough time to be ... A secondary phase composed of chromium(III) oxide was found in one of the samples. Some metallic inclusions contained silver ...
List of MeSH codes (D01)
... cerium radioisotopes MeSH D01.496.180.300 - cesium radioisotopes MeSH D01.496.212.349 - chromium radioisotopes MeSH D01.496. ... cerium radioisotopes MeSH D01.496.749.190 - cesium radioisotopes MeSH D01.496.749.213 - chromium radioisotopes MeSH D01.496. ... iron radioisotopes MeSH D01.496.749.540 - krypton radioisotopes MeSH D01.496.749.560 - lead radioisotopes MeSH D01.496.749.590 ... xenon radioisotopes MeSH D01.496.749.960 - yttrium radioisotopes MeSH D01.496.749.980 - zinc radioisotopes MeSH D01.496.807.800 ...
Chromium
19 radioisotopes have been characterized, with the most stable being 50Cr with a half-life of (more than) 1.8×1017 years, and ... Most chromium(0) compounds are derivatives of the compounds chromium hexacarbonyl or bis(benzene)chromium. Chromium is the 21st ... A large number of chromium(III) compounds are known, such as chromium(III) nitrate, chromium(III) acetate, and chromium(III) ... Some other notable chromium(II) compounds include chromium(II) oxide CrO, and chromium(II) sulfate CrSO 4. Many chromous ...
Single-photon emission computed tomography
On occasion, the radioisotope is a simple soluble dissolved ion, such as an isotope of gallium(III). Most of the time, though, ... chromium-51 and cobalt-58). These may be imaged using SPECT in order to verify the presence of fuel rods in a stored fuel ... SPECT is more widely available, because the radioisotope used is longer-lasting and far less expensive in SPECT, and the gamma ... In the nuclear power sector, the SPECT technique can be applied to image radioisotope distributions in irradiated nuclear fuels ...
Isotopes of chromium
Twenty-two radioisotopes, all of which are entirely synthetic, have been characterized with the most stable being 51Cr with a ... The isotopes of chromium range from 42Cr to 67Cr. The primary decay mode before the most abundant stable isotope, 52Cr, is ... Naturally occurring chromium (24Cr) is composed of four stable isotopes; 50Cr, 52Cr, 53Cr, and 54Cr with 52Cr being the most ... Chromium isotopic contents are typically combined with manganese isotopic contents and have found application in isotope ...
Radioisotope Production Facility
Radioisotopes Production Facility is capable of producing the following: Chromium-51, through the irradiation of potassium ... Radioisotopes Production Facility (RPF), is a facility for the production of radioisotopes from irradiation of Low enriched ... "Radioisotopes in Medicine". World Nuclear Association. April 2016. Retrieved 11 May 2016. "Radioisotopes production plants". ... The produced radioisotopes are used in medicine, industry and research activities for domestic market. The RPF is owned and ...
Chromium
19 radioisotopes have been characterized, with the most stable being 50Cr with a half-life of (more than) 1.8×1017 years, and ... A large number of chromium(III) compounds are known, such as chromium(III) nitrate, chromium(III) acetate, and chromium(III) ... Chemical compounds used in dietary supplements include chromium chloride, chromium citrate, chromium(III) picolinate, chromium( ... Chromium(III) salts, especially chrome alum and chromium(III) sulfate, are used in the tanning of leather. The chromium(III) ...
Molten salt reactor
Online fuel processing can introduce risks of fuel processing accidents, which can trigger release of radio isotopes. In some ... Structural metal such as chromium, nickel, and iron must be removed for corrosion control. A water content reduction ... Potential corrosion risks include dissolution of chromium by liquid fluoride thorium salts at 700+C, hence endangering ...
Radiochemistry
... includes the study of both natural and man-made radioisotopes. All radioisotopes are unstable isotopes of ... Thermoanaerobacter can use chromium(VI), iron(III), cobalt(III), manganese(IV) and uranium(VI) as electron acceptors while ... Radiochemistry also includes the study of the behaviour of radioisotopes in the environment; for instance, a forest or grass ... for example the action of cosmic rays on the air is responsible for the formation of radioisotopes (such as 14C and 32P), the ...
Bioremediation of radioactive waste
Radioisotopes can be transformed directly through changes in valence state by acting as acceptors or by acting as cofactors to ... YieF enzyme, for example, naturally catalyzes the reduction of chromium with a very wide range of substrates. Following protein ... The radioisotope interact with binding sites of metabolically active cells and is used as terminal electron acceptor in the ... Several radioisotopes of strontium, for example, are recognized as analogs of calcium and incorporated within Micrococcus ...
Vanadium
Twenty-four artificial radioisotopes have been characterized, ranging in mass number from 40 to 65. The most stable of these ... IN: Dietary Reference Intakes for Vitamin A, Vitamin K, Arsenic, Boron, Chromium, Copper, Iodine, Iron, Manganese, Molybdenum, ... chromium) isotopes. The chemistry of vanadium is noteworthy for the accessibility of the four adjacent oxidation states 2-5. In ... incorrectly declared that del Río's new element was an impure sample of chromium. Del Río accepted Collet-Descotils' statement ...
Promethium
ISBN 978-0-19-515026-1. Radioisotope Power Systems Committee, National Research Council U.S. (2009). Radioisotope power systems ... chromium, and platinum). In 1934, Josef Mattauch finally formulated the isobar rule. One of the indirect consequences of this ... Nuclides were produced in 1941 which were not radioisotopes of neodymium or samarium, and the name "cyclonium" was proposed, ... Duggirala, Rajesh; Lal, Amit; Radhakrishnan, Shankar (2010). Radioisotope Thin-Film Powered Microsystems. Springer. p. 12. ISBN ...
Molybdenum
It is a parent radioisotope to the short-lived gamma-emitting daughter radioisotope technetium-99m, a nuclear isomer used in ... Like chromium and some other transition metals, molybdenum forms quadruple bonds, such as in Mo2(CH3COO)4 and [Mo2Cl8]4−, which ... Of the synthetic radioisotopes, the most stable is 93Mo, with a half-life of 4,000 years. The most common isotopic molybdenum ... The relative rarity of molybdenum(III), for example, contrasts with the pervasiveness of the chromium(III) compounds. The ...
Manganese
Chromium, Chromium, Iodine, Iron, Manganese, Molybdenum, Nickel, Silicon, Vanadium, and Chromium. National Academy Press. pp. ... Several radioisotopes have been isolated and described, ranging in atomic weight from 44 u (44Mn) to 69 u (69Mn). The most ... Calvert, J. B. (24 January 2003). "Chromium and Manganese". Archived from the original on 31 December 2016. Retrieved 30 April ... Manganese isotopic contents are typically combined with chromium isotopic contents and have found application in isotope ...
Metals in medicine
Zinc, cadmium, magnesium, chromium: metal fume fever can be caused by ingestion of the fumes of these metals and leads to fume ... 99mTc is the most commonly used radioisotope agent for imaging purposes. It has a short half-life, emits only gamma ray photons ... Nickel, chromium, and cadmium: via metal-DNA interactions, these metals can be carcinogenic. Nickel: allergies to nickel, ... Metal complexes can be used either for radioisotope imaging (from their emitted radiation) or as contrast agents, for example, ...
Iridium
... radioisotopes are used in some radioisotope thermoelectric generators. Iridium is found in meteorites in much higher ... was applied by depositing iridium vapor under high vacuum on a base layer of chromium. Iridium is used in particle physics for ... The radioisotope iridium-192 is one of the two most important sources of energy for use in industrial γ-radiography for non- ... At least 37 radioisotopes have also been synthesized, ranging in mass number from 164 to 202. 192Ir, which falls between the ...
Isotopes of vanadium
24 artificial radioisotopes have been characterized (in the range of mass number between 40 and 65) with the most stable being ... chromium) isotopes. mV - Excited nuclear isomer. ( ) - Uncertainty (1σ) is given in concise form in parentheses after the ...
Isotopes of manganese
25 radioisotopes have been characterized, with the most stable being 53Mn with a half-life of 3.7 million years, 54Mn with a ... Manganese isotopic contents are typically combined with chromium isotopic contents and have found application in isotope ...
Smoke
Deposited hot particles of radioactive fallout and bioaccumulated radioisotopes can be reintroduced into the atmosphere by ... Coal combustion produces emissions containing aluminium, arsenic, chromium, cobalt, copper, iron, mercury, selenium, and ...
Cosmogenic nuclide
Here is a list of radioisotopes formed by the action of cosmic rays; the list also contains the production mode of the isotope ... the cosmic-ray spallation of iron thus produces scandium through chromium on one hand and helium through boron on the other. ...
Single-photon emission computed tomography
Radioisotope. Emission energy (keV). Half-life. Radiopharmaceutical. Activity (MBq). Rotation (degrees). Projections. Image ... chromium-51 and cobalt-58). These may be imaged using SPECT in order to verify the presence of fuel rods in a stored fuel ... On occasion, the radioisotope is a simple soluble dissolved ion, such as an isotope of gallium(III). Most of the time, though, ... SPECT is more widely available, because the radioisotope used is longer-lasting and far less expensive in SPECT, and the gamma ...
Thorium
Thirty radioisotopes have been characterised, which range in mass number from 209 to 238. After 232Th, the most stable of them ... Thorium forms eutectic mixtures with chromium and uranium, and it is completely miscible in both solid and liquid states with ... These rely on the fact that 232Th is a primordial radioisotope, but 230Th only occurs as an intermediate decay product in the ... All of these isotopes occur in nature as trace radioisotopes due to their presence in the decay chains of 232Th, 235U, 238U, ...
Stellite
... and in the stellite alloys the carbon is primarily associated with the chromium to form hard chromium carbide particles which ... There the cobalt would be activated by the neutron flux in the reactor and become cobalt-60, a radioisotope with a five year ... Stellite alloys are a range of cobalt-based alloys, with significant proportions of chromium (up to 33%) and tungsten (up to 18 ... Stellite is a range of cobalt-chromium alloys designed for wear resistance. The alloys may also contain tungsten or molybdenum ...
Isotopes of titanium
Twenty-one radioisotopes have been characterized, with the most stable being 44Ti with a half-life of 60 years, 45Ti with a ... the resulting 44Ti nucleus can then fuse with another alpha particle to form chromium-48. The age of supernovae may be ...
Isotopes of osmium
There are also 30 artificial radioisotopes, the longest-lived of which is 194Os with a half-life of six years; all others have ... Other sources of anthropogenic Os include combustion of fossil fuels, smelting chromium ore, and smelting of some sulfide ores ...
Radiopharmaceutical
There is a section for each radioisotope with a table of radiopharmaceuticals using that radioisotope. The sections are ordered ... Chromium-51Edit. 51Cr is a gamma emitter. Name Investigation Route of administration In-vitro / in-vivo Imaging / non-imaging ... Some radioisotopes* are used in ionic or inert form without attachment to a pharmaceutical, these are also included. ... making it more useful as a therapeutic isotope for brachytherapy implant of radioisotope capsules for local treatment of ...
Alkali metal
Chromium Manganese Iron Cobalt Nickel Copper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton ... Radioisotopes of caesium require special precautions: the improper handling of caesium-137 gamma ray sources can lead to ... All of the alkali metals except lithium and caesium have at least one naturally occurring radioisotope: sodium-22 and sodium-24 ... Radioisotope Brief: Cesium-137 (Cs-137). U.S. National Center for Environmental Health ...
Electric battery
lithium-chromium oxide). Li-CrO2. Li. CrO2. 3.8. 3.0. 108 ... Radioisotope thermoelectric generator. *Solar power * ...
Ytterbium
Chromium Manganese Iron Cobalt Nickel Copper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton ... 27 radioisotopes have been observed, with the most stable ones being 169Yb with a half-life of 32.0 days, 175Yb with a half- ...
Timeline of chemical element discoveries
Obtained by bombarding bismuth with chromium.[153] 109 Meitnerium 1982 G. Münzenberg, P. Armbruster et al. (GSI in Darmstadt) ... Marinsky, J. A.; Glendenin, L. E.; Coryell, C. D. (1947). "The chemical identification of radioisotopes of neodymium and of ... Chromium 1794 N. Vauquelin 1797 N. Vauquelin Vauquelin discovered the trioxide in crocoite ore, and later isolated the metal by ...
Index of chemistry articles
... radioisotope Radium Radon Radon fluoride Raman spectroscopy Raoult's law Redox Reduction Reflux Reversible reaction Rhazes ... Anfinsen Chromatography Chromite Chromium Chrysoberyl Chrysolite cinnabar Cinnabarite Citric acid Citrine quartz Clay Cleveite ... Svante Arrhenius Syenite Sylvite synthetic radioisotope systematic element name Tabun Talc Talcum Tantalite Tantalum Tanzanite ...
Germanium
Chromium Manganese Iron Cobalt Nickel Copper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton ... While most of germanium's radioisotopes decay by beta decay, 61. Ge. and 64. Ge. decay by β+. delayed proton emission.[46] 84. ... At least 27 radioisotopes have also been synthesized, ranging in atomic mass from 58 to 89. The most stable of these is 68. Ge ...
اکسیژن - ویکیپدیا، دانشنامهٔ آزاد
Chromium Manganese Iron Cobalt Nickel Copper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton ... Fourteen radioisotopes have been characterized. The most stable are 15O with a half-life of 122.24 seconds and 14O with a half- ...
Oxygen
Chromium Manganese Iron Cobalt Nickel Copper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton ... Fourteen radioisotopes have been characterized. The most stable are 15O with a half-life of 122.24 seconds and 14O with a half- ...
Silver
Chromium Manganese Iron Cobalt Nickel Copper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton ... Twenty-eight radioisotopes have been characterized, the most stable being 105Ag with a half-life of 41.29 days, 111Ag with a ...
Thallium
Chromium Manganese Iron Cobalt Nickel Copper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton ... 204Tl is the most stable radioisotope, with a half-life of 3.78 years.[12] It is made by the neutron activation of stable ... The radioisotope thallium-201 (as the soluble chloride TlCl) is used in small, nontoxic amounts as an agent in a nuclear ... "Manual for reactor produced radioisotopes" (PDF). International Atomic Energy Agency. 2003. Retrieved 2010-05-13.. ...
Hydrogen
Chromium Manganese Iron Cobalt Nickel Copper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton ... is also sometimes considered as a light radioisotope of hydrogen, due to the mass difference between the antimuon and the ...
Thulium
Chromium Manganese Iron Cobalt Nickel Copper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton ... The longest-lived radioisotopes are thulium-171, which has a half-life of 1.92 years, and thulium-170, which has a half-life of ... Holmium-chromium-thulium triple-doped yttrium aluminum garnet (Ho:Cr:Tm:YAG, or Ho,Cr,Tm:YAG) is an active laser medium ...
Rubidium
Chromium Manganese Iron Cobalt Nickel Copper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton ... allowing the use of radioisotope rubidium-82 in nuclear medicine to locate and image brain tumors.[50] Rubidium-82 has a very ...
Palladium
Chromium. Manganese. Iron. Cobalt. Nickel. Copper. Zinc. Gallium. Germanium. Arsenic. Selenium. Bromine. Krypton. ... The most stable radioisotopes are 107Pd with a half-life of 6.5 million years (found in nature), 103Pd with 17 days, and 100Pd ... Eighteen other radioisotopes have been characterized with atomic weights ranging from 90.94948(64) u (91Pd) to 122.93426(64) u ...
Nickel
Chromium Manganese Iron Cobalt Nickel Copper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton ... At least 26 nickel radioisotopes have been characterised, the most stable being 59. Ni with a half-life of 76,000 years, 63. Ni ... It is widely used in many other alloys, including nickel brasses and bronzes and alloys with copper, chromium, aluminium, lead ... IN: Dietary Reference Intakes for Vitamin A, Vitamin K, Arsenic, Boron, Chromium, Copper, Iodine, Iron, Manganese, Molybdenum, ...
Mercury (element)
Chromium Manganese Iron Cobalt Nickel Copper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton ... Hg being the most abundant (29.86%). The longest-lived radioisotopes are 194. Hg with a half-life of 444 years, and 203. Hg ... Most of the remaining radioisotopes have half-lives that are less than a day. 199. Hg and 201. Hg are the most often studied ... hexavalent chromium and cadmium) and batteries (the limit is 5 ppm).[131] In July 2007, the European Union also banned mercury ...
Chlorine
Chromium Manganese Iron Cobalt Nickel Copper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton ... The most stable chlorine radioisotope is 36Cl. The primary decay mode of isotopes lighter than 35Cl is electron capture to ... Commercial processes, such as the Mitsui MT-Chlorine Process, have switched to chromium and ruthenium-based catalysts.[61] The ...
Terbium
Chromium Manganese Iron Cobalt Nickel Copper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton ... Thirty-six radioisotopes have been characterized, with the heaviest being terbium-171 (with atomic mass of 170.95330(86) u) and ... lightest being terbium-135 (exact mass unknown).[12] The most stable synthetic radioisotopes of terbium are terbium-158, with a ...
Potassium
Chromium Manganese Airn Cobalt Nickel Capper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton ... K are foond in aw potassium, an it is the maist common radioisotope in the human bouk. ...
Curium
Chromium Manganese Iron Cobalt Nickel Copper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton ... About 20 radioisotopes and 7 nuclear isomers between 233Cm and 252Cm are known for curium, and no stable isotopes. The longest ... They predominantly emit α-particles, and the heat released in this process can serve as a heat source in radioisotope ... A more promising application of 242Cm is to produce 238Pu, a more suitable radioisotope for thermoelectric generators such as ...
Polonium
Chromium Manganese Iron Cobalt Nickel Copper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton ... Therefore, 210Po is used as an atomic heat source to power radioisotope thermoelectric generators via thermoelectric materials. ...
Zinc
Chromium Manganese Iron Cobalt Nickel Copper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton ... Zn, which has a half-life of 243.66 days, is the least active radioisotope, followed by 72. Zn with a half-life of 46.5 hours.[ ... 442-501 in Dietary Reference Intakes for Vitamin A, Vitamin K, Arsenic, Boron, Chromium, Copper, Iodine, Iron, Manganese, ... The most common decay mode of a radioisotope of zinc with a mass number lower than 66 is electron capture. The decay product ...
Carbon
Chromium. Manganese. Iron. Cobalt. Nickel. Copper. Zinc. Gallium. Germanium. Arsenic. Selenium. Bromine. Krypton. ... Carbon-14 (14C) is a naturally occurring radioisotope, created in the upper atmosphere (lower stratosphere and upper ...
Caesium
Chromium Manganese Iron Cobalt Nickel Copper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton ... Caesium-137 is a radioisotope commonly used as a gamma-emitter in industrial applications. Its advantages include a half-life ... Caesium is mined mostly from pollucite, while the radioisotopes, especially caesium-137, a fission product, are extracted from ... and the radioisotopes present a significant health and ecological hazard in the environment. ...
کلسیم - ویکیپدیا، دانشنامهٔ آزاد
Chromium Manganese Iron Cobalt Nickel Copper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton ... Apart from the practically stable 48Ca, the longest lived radioisotope of calcium is 41Ca. It decays by electron capture to ... It is also used as a reducing agent in the production of chromium, zirconium, thorium, and uranium. It can also be used to ... Many other calcium radioisotopes are known, ranging from 35Ca to 60Ca. They are all much shorter-lived than 41Ca, the most ...
Bromine
Chromium Manganese Iron Cobalt Nickel Copper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton ... The most stable bromine radioisotope is 77Br (t1/2 = 57.04 h). The primary decay mode of isotopes lighter than 79Br is electron ...
Role of inducible bronchus associated lymphoid tissue (iBALT) in respiratory immunity
Calcein-acetyoxymethyl cytotoxicity assay: standardization of a method allowing additional analyses on recovered effector cells...
Radioisotopes in Medicine | Nuclear Medicine - World Nuclear Association
Tens of millions of nuclear medicine procedures are performed each year, and demand for radioisotopes is increasing rapidly ... the use of radioisotopes for diagnostics, radiation therapy, radiopharmaceuticals and other beneficial medical uses of nuclear ... Chromium-51 (28 d):. Used to label red blood cells for monitoring, and to quantify gastro-intestinal protein loss or bleeding. ... The global radioisotope market was valued at $9.6 billion in 2016, with medical radioisotopes accounting for about 80% of this ...
Metal Contamination of Food (ebook) by Conor Reilly | 9780470995099
Respiratory clearance of aerosolized radioactive solutes of varying molecular weight.
0/Chromium Radioisotopes; 0/Gallium Radioisotopes; 0/Sugar Acids; 11096-37-0/Transferrin; 60-00-4/Edetic Acid; 67-43-6/Pentetic ... Chromium Radioisotopes. Deferoxamine / metabolism*. Dextrans / metabolism*. Dogs. Edetic Acid / metabolism*. Gallium ... Radioisotopes. Indium. Lung / metabolism*, radionuclide imaging. Pentetic Acid / metabolism*. Sugar Acids / metabolism*. ...
NIOSHTIC-2 Search Results - Full View
NIOSH-Publication; NIOSH-Grant; Chromium-compounds; In-vitro-studies; Mammalian-cells; Radioisotopes; Chemical-binding; ... The distribution and nature of chromium (7440473) binding sites were studied in-vitro. Chinese-hamster ovary cell cultures were ... Distribution and HPLC study of chromium-51 binding sites in Chinese hamster ovary cells. ... incubated with chromium-51 (Cr-51) labeled sodium-chromate (7775113) at a concentration of 60 nanomolar for 2 or 24 hours. The ...
Radioisotope Production Facility - Wikipedia
Radioisotopes Production Facility is capable of producing the following: Chromium-51, through the irradiation of potassium ... Radioisotopes Production Facility (RPF), is a facility for the production of radioisotopes from irradiation of Low enriched ... "Radioisotopes in Medicine". World Nuclear Association. April 2016. Retrieved 11 May 2016. "Radioisotopes production plants". ... The produced radioisotopes are used in medicine, industry and research activities for domestic market. The RPF is owned and ...
Radioisotope Products and Radiation Technology Section
Speciation Analysis of Arsenic, Chromium and Selenium in Aquatic Media. Vienna, March 2007 ... Radioisotope Handling Facilities and Automation of Radioisotope Production Vienna , December 2004 IAEA-TECDOC -1420 (full text ... Radioisotopes and Radiopharmaceuticals Series No. 2. Production of Long Lived Parent Radionuclides for Generators: 68Ge, 82Sr, ... Radioisotope Products and Radiation Technology Section August 2003 IAEA-CN-103, Book of Abstracts, International Conference, ...
3 REACTOR-PRODUCED RADIONUCLIDES | Isotopes for Medicine and the Life Sciences | The National Academies Press
Radioisotopes of iron and chromium were also valuable in applications in hematology. Red blood cell survival, iron physiology, ... Other reactor-produced radioisotopes continue to play a major role in research, and recent advances in many fields (such as ... A comparison of Tables 3-1 and 3-4 makes it obvious that however ably Nordion is serving the needs of commercial radioisotope ... Two other reactor-produced radioisotopes, samarium-153 and rhenium-186, may also be of use in the treatment of bone cancer and ...
Antibody-dependent cellular cytotoxicity - Wikipedia
Patent US3334050 - Organic carbonaceous matrix with radioisotope dispersed therein - Google Patents
Particularly useful radioisotopes are the short-lived isotopes such as yttrium-90, ytterbium-169, scandium-46, chromium-51 and ... When longer lived radioisotopes are employed, resins are used which are more radiation resistant. Such materials are known to ... Radioisotope-containing microspheres. US3663685 *. Apr 1, 1968. May 16, 1972. Minnesota Mining & Mfg. Biodegradable radioactive ... They also find particular utility in connection with medical uses of radioisotopes. Thus they can be employed for diagnosis or ...
Chapter 1. Digestion in Teleost Fishes
Substances used include chromium oxide (Cr2O3) and radio-isotopes such as cerium-141. A variety of inert materials have been ... Chromium oxide (Cr2O3) mixed with prepared diets and measured in the faeces provides a general comparison of the overall ... Use of radioisotope-labeled lipids in cod suggested that the cods lipase acted in the same manner as mammalian pancreatic ...
Chromium-51 Radionuclide, 5mCi (185MBq), Sodium Chromate in Normal Saline (pH 8-10), Steri-packaged | PerkinElmer
Radioisotope. Cr-51. Radionuclide. 51Cr. Shipping Condition. Ambient. Special Ordering Information. This is a radioactive ... Chromium fulfills the requirement of a good label. It is generally non-toxic (as Na2CrO4), it is easily taken up by the cells, ... Chromium-51 Radionuclide, 5mCi (185MBq), Sodium Chromate in Normal Saline (pH 8-10), Steri-packaged * ... Chromium-51 is the most commonly used readioactive marker for the labeling of target cells in cytotoxicity assays. The common ...
Chromium-51 Radionuclide, 10mCi, EDTA Complex in 0.005M EDTA (pH 7.0) | PerkinElmer
Ussed to measure glomerular filtration rates, in chromium-51-EDTA plasma clearance studies, and in intestinal permeability ... Radioisotope. Cr-51. Radionuclide. 51Cr. Shipping Condition. Ambient. Special Ordering Information. This is a radioactive ... Chromium-51 Radionuclide EDTA Complex in 0.005M EDTA (pH 7.0) Shipped ambient. Cr-EDTA in 0.005M EDTA pH ~7>50Ci(1.85TBq)/g ... Radioactive chromium complexed with ethylene diamine tetracetic acid. 51Cr-EDTA is commonly used to measure glomerular ...
ASTM International - Symposia Papers & STPs - Browse by Year
Physical and Mechanical Properties of Wrought Corrosion-Resisting and Heat-Resisting Chromium and and Chromium-Nickel Steels ... STP134 Symposium on the Use of Radioisotopes in Soil Mechanics. STP137 Symposium on Fatigue with Emphasis on Statistical ... STP228 Report on Elevated-Temperature Properties of Chromium Steels (12-27 per cent) ... STP264 Report on Stress-Corrosion Cracking of Austenitic Chromium-Nickel Stainless Steels ...
Patent US6905455 - Radioactive member and method of making - Google Patents
Examples of permanently implantable sources include iodine-125 or palladium-103 as the radioisotope. The radioisotope is ... chromium-56, arsenic-73, yttrium-90, phosphorus-32 and mixtures thereof. Especially preferred are palladium-103 and iodine-125 ... Radioisotope dispersed in a matrix for brachytherapy. WO2000028554A1. 5 Nov 1999. 18 May 2000. Nycomed Amersham Plc. Products ... Any radioisotope suitable for use in brachytherapy may be used in the source. Non-limiting examples include palladium-103, ...
Chromium compounds | definition of Chromium compounds by Medical dictionary
Chromium compounds explanation free. What is Chromium compounds? Meaning of Chromium compounds medical term. What does Chromium ... Looking for online definition of Chromium compounds in the Medical Dictionary? ... chromium-51. a radioisotope of chromium having a half-life of 27.8 days; used to label red blood cells to determine red cell ... chromium. (redirected from Chromium compounds). Also found in: Dictionary, Thesaurus, Encyclopedia. chromium. (Cr) [kro´me-um] ...
Isotope | Encyclopedia.com
Radioisotopes have become increasingly more important in many fields in the past 60 years or so. Some radioisotopes are ... Examples of widely used tracers in medicine are: calcium-47 for studies of bone formation, chromium-51 for red blood cell ... Over one thousand radioisotopes-radioactive isotopes-either exist in nature or have been made artificially by bombarding stable ... producing a ther-apeutically useful radioisotope of sodium. Newer radioisotopes produced this way for medical applications ...
Patent US7811570 - Method of affecting a function of or ablating a non-malignant cell - Google Patents
Chromium-51, Iron-59, Selenium-75, Thallium-201, and Ytterbium-169. Preferably the radioisotope will emit in the 10-5,000 kev ... Use of radioisotopes with higher energy, beta, or positron emissions would entail use of imaging cameras with the appropriate ... Among the radioisotopes used, gamma-emitters, positron-emitters, x-ray emitters and fluorescence-emitters are suitable for ... Suitable radioisotopes for the methods of the present invention include: Astatine-211, Iodine-123, Iodine-125, Iodine-126, ...
Cobalt Nickel Chromium Molybdenum Alloy | AMERICAN ELEMENTS ®
Cobalt Nickel Chromium Molybdenum Alloy Co-Ni-Cr-Mo bulk & research qty manufacturer. Properties, SDS, Applications, Price. ... Co-60, a commercially important radioisotope, is useful as a radioactive tracer and gamma ray source. The origin of the word ... 24 Cr 51.996100000 Chromium See more Chromium products. Chromium (atomic symbol: Cr, atomic number: 24) is a Block D, Group 6, ... The chromium atom has a radius of 128 pm and a Van der Waals radius of 189 pm. In its elemental form, chromium has a lustrous ...
Chromium - New World Encyclopedia
Of these, 52Cr is the most abundant (83.789 percent natural abundance). In addition, 19 radioisotopes have been characterized, ... Chromium metal and chromium(III) compounds are not usually considered health hazards, but hexavalent chromium (chromium VI) ... Chromium(III) oxide. Chromium(III) oxide (Cr2O3) also known as chromium sesquioxide or chromia, is one of four oxides of ... The human body needs trace amounts of trivalent chromium (chromium(III)) for sugar metabolism, but hexavalent chromium ( ...
List of Free Continuing Education (CME) Courses in Nuclear Medicine
Frontiers | Amplicon Sequencing Reveals Microbiological Signatures in Spent Nuclear Fuel Storage Basins | Microbiology
Iron, chromium, vanadium, zinc, and lanthanum are components of the stainless steel alloys that are used in a variety of ... We suspect that many of the elements detected are radioisotopes, though radiochemical analyses were not performed. XRD analysis ... Trace amounts of cobalt, chromium, copper, lanthanum, lithium, sodium, strontium, uranium, vanadium, and zirconium were also ...
Effect of Hemorrhagic Shock on the Phagocytic Function of Kupffer Cells | Circulation Research
RADIOISOTOPES
US20030092957A1 - Brachytherapy device and method of use
- Google Patents
The insoluble radioisotope may comprise an insoluble radioisotope or insoluble compound of a radioisotope, such as an insoluble ... nickel-chromium, nickel-cobalt, nickel-phosphorus-boron, and copper-nickel chromium. Solutions are typically aqueous. [0034] ... the radioisotope present in the sol-gel comprises an insoluble radioisotope or compound of a radioisotope. The formation of sol ... For example, the radioisotope of the first radioactive coating layer may be different than the radioisotope of one or more of ...
2 ENRICHED STABLE ISOTOPES | Isotopes for Medicine and the Life Sciences | The National Academies Press
These materials are used as targets in reactors and accelerators to produce radioisotopes for basic and clinical research (see ... Noninvasive studies of chromium metabolism and human requirements. • Adult onset diabetes mechanisms ... These enriched stable isotopes are used as target materials in the preparation of radioisotopes with particle accelerators and ... a For specific examples of radioisotope applications, refers to Chapters 3 and 4. ...
Scientific.Net: Materials Science
The serial sectioning method was applied to simultaneous evaluation of diffusion rates of chromium, manganese and iron in both ... In diffusion experiments the radioisotopes 54Mn, 51Cr and 59Fe were used. ... in studied samples is the volume diffusion while chromium and iron are transported mainly through the high diffusivity paths. ...
103ru 106ru 141ce: Topics by Science.gov
Passage of chromium-mordanted and rare earth-labeled fiber: time of dosing kinetics ... The samples were cured and shipped to Babcock & Wilcox Technical Services Group-Radioisotope and Analytical Chemistry ... In addition to the eight toxic metals - arsenic, barium, cadmium, chromium, mercury, lead, selenium and silver - analytes ... chromium, cadmium, {sup 99}Tc, and {sup 106}Ru), (3) reduction in the size of the off-gas handling equipment for the ...
ManganeseRadioactiveCompoundsAtomic number 24Isotopes of chromHexavalentIsotopeDecayTrivalent chromiumCorrosionAssaysNative chromiumProduce chromiumMetallic chromiumHumansCytotoxicOxideHuman carcinogenRelease assayMetabolism27.7 daysSodium-chromateAluminiumIonsCobaltMeSHRadioactivityPhosphateSeleniumChromiteCellsUnstablePeriodic1798ElementalWhole grainsPhosphorus RadioisotopesArsenicStableTracesDerivesIronLaboratoryTracerAtomsCarbonInorganicDiffusionImmune systemChemicalCompriseBrachytherapyStainless steelNuclear reactors
Manganese6
- The serial sectioning method was applied to simultaneous evaluation of diffusion rates of chromium, manganese and iron in both spinels at 1073 K and 1173 K under the pressure of 105 Pa in SO2 containing 10 Pa O2. (scientific.net)
- Moreover the dominant mechanism of manganese transport (the highest one) in studied samples is the volume diffusion while chromium and iron are transported mainly through the high diffusivity paths. (scientific.net)
- they actually used manganese-53, which decays to chromium-53 with a half-life of 3.74 million years. (cydeweys.com)
- As for the type of radioisotope analysis performed, they specifically used radioisochron dating, which compares relative quantities of the unstable isotope (manganese-53) with its resultant decay product (chromium-53) to determine age. (cydeweys.com)
- The isotopic contents of Chromium are typically combined with manganese isotopic contents and have been found in the application of the isotope geology. (simplyknowledge.com)
- 7 Their invention would rely on detecting changes in the rate of manganese 54 decaying to chromium 54. (freerepublic.com)
Radioactive11
- Radioactive chromium complexed with ethylene diamine tetracetic acid. (perkinelmer.com)
- It is an object of this invention to prepare radioactive particles consisting of carbonaceous matrices having firmly bound radioisotopes dispersed therein. (google.com)
- chromium 51 a radioactive isotope of chromium having a half-life of 27.7 days and decaying by electron capture, emitting gamma rays. (thefreedictionary.com)
- Objective: to evaluate the leakage of radioactivity after intraarticular administration of radioactive suspensions based on Chromium (III) Phosphate as well as the probability of induction of genotoxic effect. (bvsalud.org)
- Cr atoms with atomic weights of 46-49, 51, 55, and 56 are radioactive chromium isotopes. (bvsalud.org)
- Blood volume fluctuations determined by radioisotopes of chromium and radioactive iodinated serum albumin. (uchicago.edu)
- The EPA has not derived reference concentrations (RfCs) or RfDs for radioactive strontium (IRIS 2002), nor does the Integrated Risk Information System (IRIS) database provide cancer assessments for radioisotopes of strontium. (cdc.gov)
- Nuclear medicine is a medical specialty involving the application of radioactive substances (radioactive isotopes or radioisotopes) in the diagnosis and treatment of disease. (helenthehare.org.uk)
- Radioactive tracers can be used to see how well organs in your body are working or to find areas of disease e.g. radioisotopes of iodine or technetium. (helenthehare.org.uk)
- Used various US EPA and US DOE models to evaluate the implications of radioactive substance migration from a contaminated site and assessed the health impact of radioisotopes, including uptake of radioactivity into plants, and, hence, into food. (gradientcorp.com)
- Cobalt-60 is a commercially important radioisotope, used as a radioactive tracer and for the production of high energy gamma rays. (housemannskost.ch)
Compounds6
- Chromium strongly resists corrosion and is used extensively to plate other metals, harden steel, and, in combination with other elements, form colored compounds. (thefreedictionary.com)
- Various chromium compounds, such as chromium(III) oxide and lead chromate, are brightly colored and used in paints and pigments. (newworldencyclopedia.org)
- Chromium was named after the Greek word "chroma" meaning color , because of the many colorful compounds made from it. (newworldencyclopedia.org)
- [5] The name of the element is derived from the Greek word χρῶμα, chrōma , meaning color , [6] because many chromium compounds are intensely colored. (wikipedia.org)
- Sort the following chromium compounds by whether the cation is chromium(II) or chromium(III). (jiskha.com)
- Inhalation of the Chromium compounds may lead to ulceration and perforation of the mucous membranes of the nasal septum, irritation of the pharynx and larynx, asthmatic bronchitis, bronchospasms and edema. (simplyknowledge.com)
Atomic number 243
- Chromium (chemical symbol Cr , atomic number 24) is a hard, shiny, steel-gray metal that takes a high polish and does not tarnish. (newworldencyclopedia.org)
- Chromium is a chemical element with the symbol Cr and atomic number 24. (wikipedia.org)
- Chromium is the first chemical element in Group 6 with a symbol Cr and an atomic number 24. (simplyknowledge.com)
Isotopes of chrom1
- Unstable isotopes of chromium that decay or disintegrate emitting radiation. (bvsalud.org)
Hexavalent4
- It is an essential dietary trace element, but hexavalent chromium is carcinogenic. (thefreedictionary.com)
- The human body needs trace amounts of trivalent chromium (chromium(III)) for sugar metabolism , but hexavalent chromium (chromium(VI)) is very toxic. (newworldencyclopedia.org)
- While chromium metal and Cr(III) ions are not considered toxic, hexavalent chromium , Cr(VI), is both toxic and carcinogenic . (wikipedia.org)
- The carcinogenicity of strontium chromate is attributed to the hexavalent chromium ion and not to strontium. (cdc.gov)
Isotope4
- Chromium 51 isotope is used in blood studies. (thefreedictionary.com)
- isotope chromium -51 has a half life of 28 days. (jiskha.com)
- Conventional assays use target cells labeled with 51 chromium and infer cytotoxic T lymphocyte activity by measuring the isotope released by the target cells lysed following incubation with antigen-specific cytotoxic T lymphocytes. (biomedcentral.com)
- Isotope effects are most readily observed in … Se-80 is used for the production of the medical radioisotope Br-80m. (jerusalemroses.com)
Decay2
- Students learn the decay scheme and decay mode of various radioisotopes, such as chromium-51 and fluorine-18. (study.com)
- How long will it take 360.00 g of chromium-48 to decay to 11.25g. (jiskha.com)
Trivalent chromium2
- Chromatographic analyses indicated the presence of at least three different molecular species interacting with chromate or its reduced derivative trivalent chromium (16065831). (cdc.gov)
- In the United States, trivalent chromium (Cr(III)) ion is considered an essential nutrient in humans for insulin , sugar and lipid metabolism . (wikipedia.org)
Corrosion4
- Chromium metal is of high value for its high corrosion resistance and hardness . (wikipedia.org)
- A major development in steel production was the discovery that steel could be made highly resistant to corrosion and discoloration by adding metallic chromium to form stainless steel . (wikipedia.org)
- Exception : Niobium is also added to some austenitic steels as an alloying element to stabilize the austenitic structure, to prevent susceptibility to inter-granular corrosion (associated with chromium depletion of grain boundaries) and to decrease the grain size. (slideserve.com)
- Chromium is widely used for plating to produce a shiny hard surface that is resistant to corrosion. (simplyknowledge.com)
Assays4
- Chromium-51 is the most commonly used readioactive marker for the labeling of target cells in cytotoxicity assays. (perkinelmer.com)
- The common name for such assays Chromium Release also describes the fundamental method behind the assay procedure. (perkinelmer.com)
- Chromium-51 ( 51 Cr) radionuclide, commonly used as a label for target cells in chromium release assays, cell-mediated cytotoxicity studies, antibody-dependent cytotoxicity (ADCC) studies, and CAR-T cell development. (perkinelmer.com)
- Widely used CTL assays, including the chromium release, JAM test and ELISPOT, involve either radioisotopes or lengthy procedures. (elsevier.com)
Native chromium3
- Deposits of native chromium metal are rare, but they have been discovered. (newworldencyclopedia.org)
- Native Chromium exists in Kimberlite pipe, where the reducing atmosphere favours the formation of diamond in addition to the elemental Chromium. (simplyknowledge.com)
- Though native chromium deposits are rare, some native chromium metal has been discovered. (chemeurope.com)
Produce chromium2
- By mixing crocoite with hydrochloric acid , he was able to produce chromium oxide, with the chemical formula CrO 3 . (newworldencyclopedia.org)
- In a reaction, 41.8 g of chromium(III) oxide reacts with 14.8 g of aluminum to produce chromium and aluminum oxide. (jiskha.com)
Metallic chromium1
- In 1798, Vauquelin discovered that he could isolate metallic chromium by heating the oxide in a charcoal oven. (newworldencyclopedia.org)
Humans1
- As Chromium is an essential nutrient for humans, its shortage in the body may cause heart conditions, disruptions of metabolisms and diabetes. (simplyknowledge.com)
Cytotoxic1
- 70. The method according to claim 69, wherein the cytotoxic or detectable moiety comprises or consists of a radioisotope. (freepatentsonline.com)
Oxide7
- In addition, chromium(VI) oxide is used in manufacturing high-performance audiotapes. (newworldencyclopedia.org)
- This produces sodium chromate (Na 2 CrO 4 ), which is reduced with carbon to chromium(III) oxide (Cr 2 O 3 ). (newworldencyclopedia.org)
- If 28.6 g of chromium is produced, what mass of aluminum oxide is produced? (jiskha.com)
- when solid aluminum is heated with chromium(II) oxide, solid chromium and aluminum oxide are produced. (jiskha.com)
- If you are using 125 g of aluminum and 225 g of chromium (II) oxide, how many grams of chromium are produced. (jiskha.com)
- Chromium is obtained by heating chromium(III) oxide with carbon. (bartleby.com)
- Chromium is usually produced by reducing the oxide with aluminium. (simplyknowledge.com)
Human carcinogen1
- Chromium(VI) is a human carcinogen and causes DNA damage following reduction by intracellular reductants. (dartmouth.edu)
Release assay2
- the Sulfur-35 [ 35 S] release assay is a little used radioisotope-based alternative. (wikipedia.org)
- The lytic energy of CD8+ T-cells has typically been quantified sooner than 51 Cr-release assay, whereby CD8+ T-cells are incubated in vitro with target cells that be dressed been infected with a virus and labeled with a radioisotope of chromium (51 Cr). (wwf.sg)
Metabolism1
- Traces of chromium occur in plants and animals, and there is evidence that this element may be important in human nutrition, especially in carbohydrate metabolism. (thefreedictionary.com)
27.7 days1
- Chromium-51 is a radioisotope that is used to assess the lifetime of red blood cells The half-life of chromium-51 is 27.7 days. (jiskha.com)
Sodium-chromate1
- Chinese-hamster ovary cell cultures were incubated with chromium -51 (Cr-51) labeled sodium-chromate (7775113) at a concentration of 60 nanomolar for 2 or 24 hours. (cdc.gov)
Aluminium1
- Ferrochromium alloy is commercially produced from chromite by silicothermic or aluminothermic reactions and chromium metal by roasting and leaching processes followed by reduction with carbon and then aluminium . (wikipedia.org)
Ions2
- Up to 30 percent by weight of radioisotope ions can be incorporated into the particles. (google.com)
- A car bumper is plated with chromium using chromium(III) ions in solution. (jiskha.com)
Cobalt7
- ScienceDirect Topics,The same RPD framework design was manufactured using cobalt-chrome alloy using a layer thickness of 0.075 mm,There is a considerable difference between cobalt and chromium in terms of their solubility, with cobalt being considerably more soluble and forming soluble cobalt oxides. (housemannskost.ch)
- Types of Cobalt-Chromium Alloy. (housemannskost.ch)
- A special form of Cobalt-Chromium Alloy known as Talonite is manufactured by hot-rolling and hardening a specific alloy combination. (housemannskost.ch)
- Talonite combines the properties of hardness, machinability and wear resistance.Cobalt Chromium Alloy, Cobalt Chromium Alloy,- Alibaba,A wide variety of cobalt chromium alloy options are available to you, such as free samples, paid samples. (housemannskost.ch)
- There are 570 cobalt chromium alloy suppliers, mainly located in Asia. (housemannskost.ch)
- It is used in nuclear weapons, alloys, and pigments.Cobalt-chromium Alloy, Cobalt-chromium Alloy Suppliers and,,Alibaba offers 574 cobalt-chromium alloy products. (housemannskost.ch)
- A wide variety of cobalt-chromium alloy options are available to you, such as free samples, paid samples.Microstructural characterization of cobalt chromium (ASTM,,Microstructural characterization of cobalt chromium (ASTM F75) cubes produced by EBM technique,microstructure and on corresponding mechanical properties for cobalt-chromium alloy parts manufactured by EBM technique. (housemannskost.ch)
MeSH1
- Phosphorus Radioisotopes" is a descriptor in the National Library of Medicine's controlled vocabulary thesaurus, MeSH (Medical Subject Headings) . (harvard.edu)
Radioactivity2
- Radioisotope tracers are introduced into knee joint materials and wear rates are derived by detecting the radioactivity of the prosthesis lubricant during laboratory simulation. (edu.au)
- Radiometric study of natural radioactivity from soil has been carried out to estimate the concentration of gamma-induced radioisotopes and their associated radiological risk in two sampling sites, an uncultivated (undisturbed) and an agricultural site located near an industrial zone. (researchbib.com)
Phosphate1
- Efficiency of clearance (measured by uptake of radioisotope labeled albumin and chromium phosphate) was likewise markedly below normal. (ahajournals.org)
Selenium2
- In addition to the eight toxic metals-arsenic, barium, cadmium, chromium, mercury, lead, selenium and silver-analytes included the underlying hazardous constituents (UHC) antimony, beryllium, nickel, and thallium which could not be eliminated from analysis by process knowledge. (unt.edu)
- Selenium isotopes are mainly used for the production of medical and industrial radioisotopes. (jerusalemroses.com)
Chromite2
- Chromium is mined as chromite (FeCr 2 O 4 ) ore . (newworldencyclopedia.org)
- About 15 million tons of marketable chromite ore were produced in 2000 and converted into roughly four million tons of ferrochrome (consisting of 70 percent chromium alloyed with iron), with an approximate market value of 2.5 billion U.S. dollars. (newworldencyclopedia.org)
Cells1
- Distribution and HPLC study of chromium -51 binding sites in Chinese hamster ovary cells. (cdc.gov)
Unstable1
- It is the radioisotopes or unstable atoms that produce nuclear energy. (aquariofilia.net)
Periodic1
- Chromium is the fourth transition metal found on the periodic table, and has an electron configuration of [ Ar ] 3d 5 4s 1 . (wikipedia.org)
17981
- He discovered Chromium in 1798 and named it so due to its range of colours in the solution. (simplyknowledge.com)
Elemental1
- This mine is a kimberlite pipe rich in diamonds, and the reducing environment helped produce both elemental chromium and diamond. (newworldencyclopedia.org)
Whole grains1
- chromium is present in various foods including brewers' yeast, whole grains, peanuts, wheat germ and skim milk. (thefreedictionary.com)
Phosphorus Radioisotopes2
- This graph shows the total number of publications written about "Phosphorus Radioisotopes" by people in Harvard Catalyst Profiles by year, and whether "Phosphorus Radioisotopes" was a major or minor topic of these publication. (harvard.edu)
- Below are the most recent publications written about "Phosphorus Radioisotopes" by people in Profiles. (harvard.edu)
Arsenic1
- But also, that this same soil of the Bargny study site was significantly enriched with arsenic and chromium. (researchbib.com)
Stable3
- These enriched stable isotopes are used as target materials in the preparation of radioisotopes with particle accelerators and nuclear reactors and as biological tracers in biomedical research and clinical applications. (nap.edu)
- Chromium has a stable crystalline structure and moderate thermal expansion. (simplyknowledge.com)
- Chromium is composed of three naturally occurring stable isotopes namely 52 Cr, 53 Cr and 54 Cr. (simplyknowledge.com)
Traces1
- He was also able to detect traces of chromium in precious gemstones such as ruby and emerald . (newworldencyclopedia.org)
Derives1
- The red color of rubies derives from the presence of chromium. (newworldencyclopedia.org)
Iron2
- Radioisotopes of iron and chromium were also valuable in applications in hematology. (nap.edu)
- No mineral supplements should be required for athletes who are consuming a well-balanced diet but they frequently take them, especially iron, magnesium and chromium. (thefreedictionary.com)
Laboratory2
- Oak Ridge National Laboratory (ORNL) played a pioneering role in the development of the first full-scale operating reactor prototype and the initial production of radioisotopes for applications in medical and biological research (Mirzadeh et al. (nap.edu)
- The samples were cured and shipped to Babcock & Wilcox Technical Services Group-Radioisotope and Analytical Chemistry Laboratory (B&WTSGRACL) to perform the Toxic Characteristic Leaching Procedure (TCLP) and subsequent extract analysis on saltstone samples for the analytes required for the quarterly analysis saltstone sample. (unt.edu)
Tracer1
- The radioisotope tracer chromium-51 with a half-life of∼30 days is well suited for this work. (edu.au)
Atoms2
- The attributes of naturally decaying atoms, known as radioisotopes, give rise to several applications across many aspects of modern day life (see also information paper on The Many Uses of Nuclear Technology ). (world-nuclear.org)
- Later that year he successfully isolated chromium atoms. (chemeurope.com)
Carbon1
- It has been proposed heretofore to incorporate radioisotopes into the structure of synthetic resins, and articles containing tritium or carbon 14 incorporated into the structure of synthetic resins or plastics have been produced. (google.com)
Inorganic2
- Radioisotopes widely used in medicine, industry and scientific research, new applications for their use constantly being developed ester names derived from parent alcohol acid, where latter be organic inorganic. (urlaubsreporter.info)
- But, at the radioisotope of our sink, Inorganic illegibility will connect featured. (adams-farm.com)
Diffusion1
- In diffusion experiments the radioisotopes 54Mn, 51Cr and 59Fe were used. (scientific.net)
Immune system1
- Some of the health problems caused by Chromium include upset stomach and ulcers, respiratory problems, weakened immune system, kidney and liver damage, alteration of genetic material, lung cancer and death. (simplyknowledge.com)
Chemical1
- Can chemical treatments to displace radioisotopes influence soil fertility? (environmental-expert.com)
Comprise2
- Permanent implants for prostate treatment comprise radioisotopes with relatively short half lives and lower energies relative to temporary sources. (google.co.uk)
- Stainless steel and chrome plating ( electroplating with chromium) together comprise 85% of the commercial use. (wikipedia.org)
Brachytherapy1
- radioisotope brachytherapy. (dartmouth.edu)
Stainless steel1
- [4] Chromium is the main additive in stainless steel , to which it adds anti-corrosive properties. (wikipedia.org)
Nuclear reactors2
- half-lives different medical radioisotopes given the table below scientists tracking many pathways which damaged nuclear reactors at fukushima make way into out seawater, marine life. (urlaubsreporter.info)
- Q. Strontium-90 is a byproduct in nuclear reactors fueled by the radioisotope uranium-235. (clutchprep.com)