(n.) A salt containing two parts of chromic acid to one of the other ingredients; as, potassium bichromate; -- called also dichromate.
Example Sentences:
(1) Sensitization by potassium bichromate estimated by patch test only was 30%, and by MIT only also 30%, but the two test methods disagreed in 24%.
(2) Strains capable of nitrate respiration could use bichromate ions as a terminal electron acceptor in the absence of competing acceptors.
(3) Bichromate oxidability can be employed as a quantitative indicator of the total content of organic admixtures, provided that oxidation is carried out in a certain way.
(4) A pure bacterial culture utilizing chromates and bichromates as oxygen donors during growth on organic substances in anaerobic conditions was isolated from active ooze of sewage and industrial wastes containing a weak solution of chromates.
(5) The intensity of DNA repair synthesis was studied in rat lymphocytes subjected to the treatment in vivo by various concentrations of potassium bichromate and manganese chloride.
(6) The ultrastructural localization of endogenous calcium in the retina of adult cichlid fish Oreochromis mossambicus (Teleostei) was studied using the cytochemical osmiate-bichromate method of Probst (1986).
(7) Potassium bichromate stain was used to visualize pathological calcium accumulation.
(8) It seems to be the first published case of ARF after match poisoning, probably because of the presence of potassium bichromate.
(9) A history of employment in the Bichromate and Special Products Department (production of chromic acid and other products), known as the 'wet end', was associated with the increased lung cancer mortality in contrast to the Mill and Roast Department, known as the 'dry end'.
(10) It was found that manganese chloride has a direct effect on DNA, causing its damage whereas potassium bichromate has an indirect influence on DNA inhibiting its repair synthesis.
(11) It is established that potassium bichromate (K2Cr2O7) in chronic and acute poisoning evokes a significant increase in frequency of cells with chromosome aberrations in bone marrow of rats.
(12) For some substances (cadmium, bichromate, metavanadate, and bromide) individual growth (carapace length) was found to be a sensitive parameter.
(13) This method is a modified version of Golgi's Silver method and consists of the following procedures: The formalin-fixed tissue blocks were incubated in a solution containing 3% potassium bichromate (150 ml), 96% ethyl alcohol (50 ml), and concentrated acetic acid (50 ml) for 24 hrs.
(14) Common white rats were used in the study of potassium bichromate (PB) influence and paranasal sinuses mucosae.
(15) A computer-assisted calculus of the chromophores distribution in the contiguous layer around the scattering centers of a multiple scattering medium, using bichromate photometric data and an extended Kubelka-Munk expression, was developed.
(16) For the water reclaimed from the atmospheric condensate the following correlation between bichromate oxidability and the concentration of admixtures has been established: 1 mg O2 consumed corresponds approximately to 0.66 mg of organic admixtures in water.
(17) The specificity of chromium sensitization was ascertained by ear tests, specific desensitization by intravenous injection of potassium bichromate and by histological ear sections showing marked infiltrates of leukocytes following ear application of chromium-dimethyl sulfoxide in already sensitized animals.
(18) It is concluded that, although the bichrome technique is feasible, most subjects found the conventional laser method, involving red speckles alone, easier to use and that the associated results were slightly more reproducible.
(19) A study was made of the state of the tubular apparatus in 360 albino mice given repeated subcutaneous injections of potassium bichromate with intervals of 1 day, 1 week and 1 month.
(20) In 76 and 72% of 156 guinea pigs sensitized with potassium bichromate and sulfasol respectively, both the test methods gave results in agreement.
Dichromate
Definition:
(n.) A salt of chromic acid containing two equivalents of the acid radical to one of the base; -- called also bichromate.
Example Sentences:
(1) Solutions of sodium dichromate were administered to Sprague Dawley rats by intratracheal instillations over a period of 30 months.
(2) The most frequent sensitizers observed included nickel sulphate, cobalt, Kathon CG, perfumes, potassium dichromate and balsam of Peru.
(3) Potassium dichromate and chromium chloride were analyzed for their ability to induce mitotic gene conversion and point reverse mutation in D7 diploid strain of S. cerevisiae.
(4) The best fixatives for this purpose were formol dichromate, periodate-lysine-paraformaldehyde (PLP) and a novel fixative formed from the addition of a dichromate solution to PLP.
(5) Six patients took dichromate solutions as rectal enemas, 2 were left with impaired renal function and 1 required a permanent colostomy as a result of extensive peri-anal necrosis.
(6) Each of 31 chromate-allergic patients was given one tablet containing 7.1 mg potassium dichromate, plus a placebo tablet.
(7) of solutions of acid potassium dichromate and alkaline potassium chromate.
(8) The coefficient of variation for potassium dichromate after storage at 4 degrees C was 4.6324% and at room temperature 9.6334%.
(9) In vivo administration of sodium dichromate onto the inner shell membrane of 14 day chick embryos resulted in the formation of a persistent chromium(V) species in liver cells (g = 1.987).
(10) Prior to the oral challenge all the patients were patch tested with nickel sulphate, cobalt chloride and potassium dichromate after adhesive tape stripping.
(11) Chromium nitrate and chloride release and that of potassium dichromate was determined and converted to the chromium content in the concentrations used for skin tests.
(12) X-ray micro-analysis of glutaraldehyde-dichromate-fixed sections was used to discriminate noradrenaline-containing nerves.
(13) The mutagenicity of sodium dichromate in the Ames test was decreased as a consequence of chromium(VI) reduction by tissue postmitochondrial (S-9 or S-12) fractions from untreated rats with the following rank of efficiency: liver; kidney; and lung.
(14) In vivo treatment with the drug enhanced detoxication by liver and lung S-12 fractions of direct-acting mutagens (ICR 191, epichlorohydrin, 4-nitroquinolino-N-oxide and dichromate) and counteracted opposite effects triggered by administration of GSH depletors.
(15) Actual rates of macromolecular syntheses have been calculated by taking into account the induced changes of soluble precursor concentrations; sucn normalized rates point out that dichromate induces a sudden blockage of DNA replication, whereas RNA and protein syntheses are secondarily inhibited.
(16) Brucella milk ring tests (BMRT's) were performed on fresh herd milk samples and pooled samples, preserved at a processing factory with potassium dichromate.
(17) These results suggest that dichromate possesses a characteristic dual action on cellular metabolism, which might be related to its metabolic fate.
(18) Most of the oxidants tested (K-dichromate, FeCL3, H2O2, O2, and chloroperbenzoic, ascorbic, performic, and periodic acids) rendered the various myelin constituents less extractable than the constituents of unoxidized control homogenates.
(19) An 18-year-old girl developed acute renal failure 24 hr after ingestion of potassium dichromate.
(20) Dichromate first stimulates and then inhibits nucleoside (mostly thymidine) uptake, whereas amino acid uptake is immediately inhibited.