Search results for: COBALT RAPID RUN
#28043285 2017/01/03 Save this To Up
[Determination of relative elements of hard metal in workplace air and urine by inductive coupled plama].Objective: To establish a rapid detection method regarding the air conditions of workplace and the workers' urine included Tungsten, Cobalt, Nickel, Titanium, Cadmium, Manganese, Lead and its compounds based on inductively coupled plasma mass spectrometry (ICP-MS) . Methods: The experiment adopts ICP-MS to deter-mine those metals in workshop air and workers urine, evaluate the detection's limitation, the precision and accuracy of the method. Using the membrane filter and urine freeze - dried metal standard material to verify this method. Results: Each element of correlation coefficient was greater than 0.999. The recovery rate of air samples was 91.6%~104.6%, within-batch RSD precision was 1.41%~3.50%, between-run precision was 1.28%~4.31%, urine samples recovery rate was 93.0%~102.6%, within - batch RSD precision was 1.25%~3.56%, between - run precision was 1.58%~4.67%, According to the method every element was within the scope of the standard reference, it was also showed that the established method is accurate and reliable. Conclusion: ICP-MS is an effective and feasible method to detect the workshop air and the workers' urine which included Tungsten, Cobalt, Nickel, Titanium, Cadmium, Manganese, Lead and its compounds.
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#22484458 2012/06/20 Save this To Up
An ORS-ICP-MS method for monitoring trace levels of cobalt and chromium in whole blood samples from hip arthroplasty patients with metal-on-metal prostheses.To develop a rapid and reliable method, using an octopole reaction system (ORS) ICP-MS, capable of monitoring trace levels of Co and Cr in whole blood samples from hip arthroplasty patients with metal-on-metal prostheses.
2981 related Products with: An ORS-ICP-MS method for monitoring trace levels of cobalt and chromium in whole blood samples from hip arthroplasty patients with metal-on-metal prostheses.Goat Anti-Human, Mouse HI anti H inh human blood an Anti beta3 AR Human, Poly Directed In Vivo Angiogen Inflammation (Human) Quan Inflammation (Human) Quan Inflammation (Human) Quan Inflammation (Mouse) Quan Inflammation (Rat) Quanti Rabbit Anti-Metal ion tra Rabbit Anti-Metal ion tra Rabbit Anti-Metal ion tra
#11159776 2001/02/22 Save this To Up
Development of a routine method for the determination of trace metals in whole blood by magnetic sector inductively coupled plasma mass spectrometry with particular relevance to patients with total hip and knee arthroplasty.Joint-replacement surgery has revolutionized the treatment of osteoarthritis and is still the most effective therapy. A recent clinical trend reintroducing metal-on-metal bearing surfaces has in turn stimulated a requirement for accurate measurement of the concentrations of relevant metals in both pre- and postoperative patients. Thus, there is a need for cost-effective, multielement methods for trace metal analysis in whole blood to monitor possible increases in wear metal concentrations.
2251 related Products with: Development of a routine method for the determination of trace metals in whole blood by magnetic sector inductively coupled plasma mass spectrometry with particular relevance to patients with total hip and knee arthroplasty.FDA Standard Frozen Tissu FDA Standard Frozen Tissu FDA Standard Frozen Tissu FDA Standard Frozen Tissu Cell Meter™ Fluorimetri Cell Meter™ Fluorimetri QuantiChrom™ Formaldehy EnzyChrom™ Kinase Assay AccuzolTM Total RNA Extra MarkerGene™ Total Prote DNA (cytosine 5) methyltr Goat Anti-Human, Mouse HI
#10871415 2000/08/17 Save this To Up
Experimental kinetic rates of food-chain and waterborne radionuclide transfer to freshwater fish: a basis for the construction of fish contamination charts.A standardized procedure is proposed to obtain from laboratory experiments the kinetic accumulation and release rates necessary to calibrate dynamic models to quantify radionuclide direct and trophic transfer in fish. The model takes into account the food-chain effect, the feeding rate, and the growth of organisms. It takes as examples (54)Mn, (60)Co, and (137)Cs transfer dynamics through a simple pelagic food-chain (phytoplankton, zooplankton, prey fish, and predator fish). The estimated kinetic rates used in quantifying all the transfers of the three radioactive pollutants through the pelagic food chain are compared from the radioecological point of view. For fish, comparison was based on the calculation of concentration factors referring to direct transfer from water and trophic transfer factors. For the prey fish and the predator fish, direct transfer gave the following order for accumulation (60)Co < (137)Cs < (54)Mn. Values reached at equilibrium in L/kg WW were respectively for the prey fish and the predator fish: 8.7 < 27.4 < 107 and 4.14 < 6.59 < 13.4. For the trophic route, (137)Cs is the most accumulated (TTF(eq) = 0.485 in 291 days for the prey fish and TTF(eq) = 1.45 in 17 years for the predator fish). A sensitivity analysis adapted to the case of a chronic contamination scenario of a watercourse was run. It showed that the phytoplankton biomass, the contact time of these drifting particles from a release point to the station where they are ingested and the feeding rates of the fish are the most influential parameter with regard to the concentration in fish, whatever the trophic level. Contamination charts are constructed for the predator fish to illustrate the relationship between the most influential ecological parameters and the radionuclide concentration in fish for simple contamination scenarios. They are shown to be effective tools for helping in the choice of the most relevant value of aggregated concentration factors (ACFs: radionuclide concentration ratio between the organism and the water, referred to steady-state and to all possible transfer pathways) for a given key ecological situation in a given ecosystem. An example is given of a simple chronic release scenario of 1 Bq/L and a phytoplanktonic bloom period. For (137)Cs, the ACF increases with increasing contact time and increasing feeding rate, to nearly 550 L/kg WW at equilibrium. For (54)Mn, ACF reaches 65 L/kg WW. For (60)Co, the general pattern of the relationship is due to the rapid kinetic rates governing the distribution of the radionuclide between dissolved and solid (phytoplankton) phases with a maximum value for ACF of 7.2 L/kg WW for the case study. Analysis of these charts provides a basis for overall guidelines for chronic releases in a given watercourse.
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#2703493 1989/05/18 Save this To Up
Transcriptional activation of the heme oxygenase gene by heme and cadmium in mouse hepatoma cells.Treatment of mouse hepatoma (Hepa) cells with heme or cadmium chloride in serum-free medium causes a rapid increase in the steady-state level of heme oxygenase (HO) messenger RNA. This increase is both dose- and time-dependent. Maximum accumulation of HO mRNA is observed 3 h after addition of either agent. Treatment of Hepa cells with heme or CdCl2 also stimulates the transcription of the HO gene, as judged by in vitro nuclear transcription run-on assays. The maximum rate of HO gene transcription occurs 2 h after treatment with either agent. Comparison of the relative increase in the rate of HO gene transcription with the relative increase in the level of HO mRNA demonstrates that transcriptional activation is the primary mechanism by which heme and cadmium produce the accumulation of HO mRNA in Hepa cells. Cadmium may also influence other processes involved in the expression of HO, since the time course of mRNA accumulation diverges from that of gene transcription. However, neither heme nor cadmium alters the rate of HO mRNA degradation. Cobalt chloride and heat shock, which are potent inducers of HO mRNA in rat liver and rat C6 glioma cells, respectively, have only a small effect on the level of HO mRNA in mouse hepatoma cells.
1458 related Products with: Transcriptional activation of the heme oxygenase gene by heme and cadmium in mouse hepatoma cells.Heme Oxygenase-1 Blocking Heme Oxygenase-2 Blocking Mouse Epstein-Barr Virus Heme Oxygenase-1 Antibody Heme Oxygenase 1 Antibody Heme Oxygenase 1 Polyclon Heme Oxygenase-1 Blocking Heme Oxygenase 1 Peptide Heme Oxygenase 1 Peptide5 Heme Oxygenase-2 Antibody Heme Oxygenase 2 Antibody Heme Oxygenase 2 Polyclon
#7096253 1982/09/10 Save this To Up
Rapid screening test for sulfamethazine in swine feeds.A simple, 10-min qualitative screening test for sulfamethazine (SM) in swine feeds is detailed. The method, which can be run in the field, uses 2 plastic tubes arranged piggyback style. The upper tube contains, from top to bottom, the feed sample (about 1 g), partially deactivated alumina, and an anion exchange resin buffered at pH 5.7. The bottom tube contains a small bed of anion exchanger buffered at pH 7.9, which traps the SM. After percolation of solvent from the pH 7.9 resin and is reacted with Bratton-Marshall reagents to give a pink-to-lavender color. Feeds containing less than or equal to 0.15 ppm can be detected. A simple, additional dye concentration step allows for detection of 0.02 ppm, if desired. Only amphoteric primary aromatic amino-containing compounds with a pKa close to that of SM can theoretically interfere. Preparation of permanent color solutions using cobalt and copper acetates in glacial acetic acid is described for the optional establishment of the minimum concentration of SM in the feed. The method offers a simple way to detect some cross-contaminated withdrawal feeds containing greater than 2 ppm SM, which can lead to violative (greater than or equal to ppm) residues in swine liver.
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