CN
Search Within
239259
应用筛选条件
关键词:'239259'
显示 1-23 共 23 条结果 关于 "239259" 范围 论文
A Johansson et al.
Environmental research, 44(2), 279-293 (1987-12-01)
Rabbits were exposed by inhalation to a trivalent chromium compound (Cr(NO3)3) at a mean chromium concentration of 0.6 or 2.3 mg/m3 for about 4 months, 5 days/week and 6 hr/day. Light microscopic examination of the lungs revealed that both chromium
B Gammelgaard et al.
Journal of trace elements in medicine and biology : organ of the Society for Minerals and Trace Elements (GMS), 13(1-2), 82-88 (1999-08-13)
The purpose of these studies was to compare the in vitro absorption of two inorganic chromium(III) compounds: chromium chloride and chromium nitrate, with organic chromium(III)-picolinate; and to investigate if any in vitro metabolism of chromium(VI) takes place. The in vitro
Interconversion of CrO2 formed by decomposition of chromium (III) nitrate nonahydrate.
Maciejewski M, et al.
Journal of Solid State Chemistry, 119(1), 13-23 (1995)
A Divsalar et al.
The protein journal, 25(2), 157-165 (2006-07-25)
Thermodynamic studies have been made on the effect of Cr(+3) on the conformation and structure of bovine beta lactoglobulin-A, (Blg-A) in 50 mM sodium chloride solution at 27 degrees C using isothermal titration calorimetry (ITC), circular dichroism (CD) and fluorescence
Tai-Long Pan et al.
Proteomics, 9(22), 5120-5131 (2009-09-23)
Chromium compounds are known to be associated with cytotoxicity and carcinogenicity when applied via a skin route. The aim of this study was to evaluate the skin permeability and toxicological profiles of four chromium species. Chromium permeation across the skin
Andreja Plaper et al.
Chemical research in toxicology, 15(7), 943-949 (2002-07-18)
Trivalent chromium is a metal required for proper sugar and fat metabolism. However, it has been suggested that it causes DNA damage in in vitro test systems, although in vivo toxicity has not yet been proved. In the present study
Sława Glińska et al.
Ecotoxicology and environmental safety, 68(3), 343-350 (2007-04-10)
The incubation of Allium cepa L. roots in Pb(NO3)2, Cd(NO3)(2)x4H2O or Cr(NO3)(3)x9H2O solution at the concentration of 100 microM lowered the mitotic index (MI) value in meristem by 58%, 39%, 48%, respectively. The proportion of mitotic phases (mainly prophases and
A Johansson et al.
Environmental research, 58(1), 80-96 (1992-06-01)
Eight rabbits were exposed to 0.7 +/- 0.4 mg/m3 Co2+ as CoCl2 and 1.2 +/- 0.7 mg/m3 Cr3+ as Cr(NO3)3 (group Co + Cr), eight to 0.6 +/- 0.5 mg/m3 Co2+ (group Co), and eight to filtered air (control group)
M R Christoffersen et al.
Calcified tissue international, 41(1), 27-30 (1987-07-01)
Aluminum ions (Al) and chromium (III) ions (Cr), as they exist in aqueous solution at neutral pH, adsorb onto calcium hydroxyapatite crystals (HAP) and severely inhibit their dissolution process, when present in concentrations less than 1 microM. Iron (III) ions
Metallic and bimetallic nanocatalysts incorporated into highly porous coordination polymer MIL-101.
El-Shall M, et al.
Journal of Materials Chemistry, 19(41), 7625-7631 (2009)
Carolina Urrutia et al.
Bulletin of environmental contamination and toxicology, 80(6), 526-528 (2008-03-29)
Chromium poses a potential threat to coastal ecosystems. We used standard toxicity bioassays (semi-static, chronic) to evaluate EDTA as a chelating agent for reducing trivalent and hexavalent chromium toxicity on Petrolisthes laevigatus. Crab survival decreased linearly with increased chromium concentrations
The biochemical response to different Cr and Cd concentrations in soils amended with organic wastes.
Manuel Tejada et al.
Journal of hazardous materials, 185(1), 204-211 (2010-10-19)
The effects of adding municipal solid waste (MSW) or poultry manure (PM) on the biochemical properties of a soil polluted with Cr and Cd were studied. Soil was mixed with Cr(NO(3))(3) and Cd(NO(3))(2) to give three concentrations (0, 100, and
[Predicting the combined effect of metals using toxico-kinetic indices].
M A Kazimov et al.
Gigiena i sanitariia, (8)(8), 13-16 (1987-08-01)
A Johansson et al.
Environmental research, 39(2), 372-385 (1986-04-01)
Rabbits inhaled aerosols of hexavalent chromium (Na2CrO4) and trivalent chromium (Cr(NO3)3) at concentrations of 0.9 and 0.6 mg/m3 of the metal, respectively, for 4-6 weeks (5 days/week and 6 hr/day). Significantly more macrophages were obtained from the lungs of rabbits
Milka O Montes-Holguin et al.
Environmental toxicology and chemistry, 25(1), 220-226 (2006-02-24)
The objective of the present study was to determine the oxidative stress caused by hexavalent chromium (Cr[VI]), the chromium (Cr) uptake, and the Cr speciation in Convolvulus arvensis L. plants grown in hydroponics media containing either Cr(VI) or Cr(III). The
Reduction of chromium(VI) by ascorbate leads to chromium-DNA binding and DNA strand breaks in vitro.
D M Stearns et al.
Biochemistry, 34(3), 910-919 (1995-01-24)
Chromium(VI) is a known human carcinogen which requires intracellular reduction for activation. Ascorbate (vitamin C) has been reported to function as a major reductant of Cr(VI) in animals and cell culture systems. The reaction of Cr(VI) with varying concentrations of
Uptake and distribution of chromium in isolated rat hepatocytes and its relation to cellular injury.
S Ueno et al.
The Kitasato archives of experimental medicine, 63(1), 49-57 (1990-04-01)
In order to study the difference of uptake and distribution between hexavalent (Cr6+) and trivalent (Cr3+) chromium in isolated rat hepatocytes, the cells were incubated with Cr6+ or Cr3+ (1 mM Cr) at 37 degrees C for up to 60
Ming-Hsien Li et al.
Experimental animals, 57(1), 79-83 (2008-02-08)
Freshly defecated unsporulated oocysts of Eimeria piriformis from rabbit were treated with various concentrations (1%, 2.5%, 5%, and 10%) of chromium compounds, potassium dichromate, potassium chromate, chromium oxide and chromium nitrate, to examine their effect on sporulation. The sporulation time
Raquibul Alam et al.
Environmental monitoring and assessment, 154(1-4), 127-133 (2008-06-17)
The physical, chemical and biological characteristics of the wastewater of Natural Gas Fertilizer Factory Ltd. Fenchuganj, Sylhet were determined through extensive laboratory tests in the months of March, July, October and December of the year 2005. Concentration of Suspended Solids
Michael A Idachaba et al.
Journal of hazardous materials, 96(2-3), 331-340 (2002-12-21)
An evaluation of the effect of differences in chromium nitrate to cement ratio on the microbial stability of a chromium nitrate/cement waste form, as reflected in the leaching of chromium, calcium, magnesium and aluminum; was carried out in this study.
[A simple method for preparing chromosulfuric or chromonitric acid].
W Tittelbach-Helmrich
Zeitschrift fur medizinische Laboratoriumsdiagnostik, 25(1), 56-57 (1984-01-01)
Experimental investigation of actual problems in the colorimetric determination of chromium with diphenylcarbazide.
N Hara
Industrial health, 24(1), 41-50 (1986-01-01)
N Susa et al.
Nihon juigaku zasshi. The Japanese journal of veterinary science, 51(6), 1103-1110 (1989-12-01)
Comparative effects of hexavalent (K2Cr2O7:Cr(VI)) and trivalent chromium (Cr(NO3)3:Cr(III)) on the development of lipid peroxidation, and the relationship between the lipid peroxidation and damage to tissues were studied using male ddY strain mice. The animals were administered with either of
1/1