(n.) An element obtained by reduction of its oxide, as a hard, grayish white metal, fusible with difficulty, but easily oxidized. Its ores occur abundantly in nature as the minerals pyrolusite, manganite, etc. Symbol Mn. Atomic weight 54.8.
Example Sentences:
(1) This result was confirmed by atomic absorption spectroscopy, which indicated a stoicheiometry for copper and manganese of approx.
(2) Although GTP most potently inhibited [125I]beta h-endorphin binding in the presence of sodium, inhibition of [125I]beta h-endorphin binding by GTP was also observed in the presence of the monovalent cations lithium and potassium, but not the divalent cations magnesium, calcium, or manganese.
(3) In the present study, maternal and fetal zinc (Zn), copper (Cu), manganese (Mn), iron (Fe), magnesium (Mg), and calcium (Ca) status has been studied in Sprague-Dawley (SD) and Wistar rats.
(4) The subjects were exposed to manganese, iron , chromium compounds, thermal radiation, high temperature and noise.
(5) Experiments were conducted with young chicks to investigate the effect of various feed ingredients on manganese (Mn) bioavailability.
(6) The method was tested by using monolayers of alveolar macrophages from rabbits exposed to manganese dioxide particles.
(7) In order to determine the specific action of cadmium on bone metabolism, the effect of cadmium on alkaline phosphatase activity, a marker enzyme of osteoblasts, was compared with that of other divalent heavy metal ions, i.e., zinc, manganese, lead, copper, nickel and mercury (10 microM each), using cloned osteoblast-like cells, MC3T3-E1.
(8) The manganese peroxidase (MnP), from the lignin-degrading fungus Phanerochaete chrysosporium, an H2O2-dependent heme enzyme, oxidizes a variety of organic compounds but only in the presence of Mn(II).
(9) The manganese-containing (MnSOD) and iron-containing (FeSOD) superoxide dismutases from Escherichia coli are extensively (greater than 95%) inactivated by treatment with phenylglyoxal.
(10) It is suggested that there is a fundamental difference between magnesium and manganese in the activation of the enzyme.
(11) Chronic dietary deficiency of calcium (Ca) and magnesium (Mg) with excessive intake of aluminum (Al) and manganese (Mn) has been implicated in the pathogenesis of high incidence amyotrophic lateral sclerosis (ALS) in the Western Pacific.
(12) RNA synthesis required all four ribonucleoside triphosphates and was dependent on magnesium or manganese; optimal activity required potassium or ammonium ions.
(13) The stimulatory effects of manganese were inhibited by calcitonin but not by indomethacin.
(14) Electron spin resonance (ESR) spin trapping methodology has been used to study the reactions of manganese dusts with glutathione, employing alpha-(4-pyridyl-1-oxide)-N-tert-butyl-nitrone (PBN) and 5,5-dimethyl-1-pyrroline-N-oxide (DMPO) as spin traps.
(15) Because DMP oxidation by this enzyme is only slightly inhibited by Mn2+, this substrate should not be used in assays to detect manganese peroxidase.
(16) A major disruption in primary metabolism and hence secondary metabolism was discounted since eight primary metabolism enzymes showed no evidence of unusual changes in specific activity when normal and manganese-deficient cultures were compared.
(17) Local cobalt (Co2+) or manganese (Mn2+) applications could abolish amino acid-evoked [Ca2+]o changes, whereas most of the [K+]o changes persisted.
(18) Previous studies in neonatal and suckling animals showed that immature animals have a greatly diminished capacity to excrete manganese and therefore were considered to be unable to regulate tissue manganese concentrations.
(19) The influence of the electric field of commerical frequency on metabolism and interorgan distribution of copper, molybdenum, iron and manganese was studied in the 4-month experiment on animals with their daily 30-minute exposition.
(20) Manganese therefore acts as a catalyst for the non-enzymatic reaction, but magnesium does not.
Permanganate
Definition:
(n.) A salt of permanganic acid.
Example Sentences:
(1) Apparent digestibilities of DM, OM, CP, neutral detergent solubles and permanganate lignin were higher (P less than .01) and digestibilities of NDF and ADF, hemicellulose and cellulose were lower (P less than .01) for steers consuming alfalfa compared to orchardgrass silage.
(2) The amyloid deposited in the cerebral vessels, senile plaques and intestinal vessels showed characteristic green birefringence under the polarized light even after potassium permanganate treatment.
(3) Histopathologic examination revealed an acellular, homogeneous substance that stained positively with the Fontana Masson stain for melanin and bleached with potassium permanganate, findings consistent with corneal adrenochrome deposition.
(4) The amyloid protein proved to be AA type by potassium permanganate histochemical analysis.
(5) The ESR spectrum of the conjugate base of the 4-ethoxyaniline cation radical, the neutral 4-ethoxyphenazyl free radical, was obtained at pH 11-12 by the oxidation of p-phenetidine with potassium permanganate.
(6) Paraffin wax embedded tissue sections were stained with haematoxylin and eosin and the alkaline Congo red method with and without previous treatment with potassium permanganate.
(7) We show that both the immediate and post-irradiation oxygen effects in barley seeds decrease in magnitude in the presence of potassium permanganate and caffeine.
(8) Optimal fine structure of fungal spores was obtained by en bloc staining with alkaline bismuth solution after aldehyde and permanganate fixation.
(9) Liver specimens from 103 patients with various hepatic diseases and from 297 consecutive liver biopsies examined routinely were stained with orcein after oxidation of the tissue sections with potassium permanganate.
(10) It yielded a methoxy methyl ester on treatment with diazomethane, and permanganate oxidation gave pyrrole-2,3,5-tricarboxylic acid.
(11) However the potassium permanganate technique can help in the classification.
(12) We found that the wall had two phases, one composed of microfibrils of unknown composition and a second consisting of an amorphous matrix, part of which stained like protein with potassium permanganate and part of which was removed by snail-gut enzymes.
(13) Unfortunately, more general reactions, such as the permanganate, the 'Lowry' and the ninhydrin stains, cannot be utilized since the carrier ampholytes react very strongly with all these reagents.
(14) N-ethylmaleimide binds covalently, sulfate causes as yet unspecified damage, and permanganate leads to oxidative damage to CF1 under energized conditions.
(15) The results of a seven year chemical water investigation of tube samples from the region of the Halbenrain Waste Disposal Plant reveal fluctuations in chloride, oxygen content, total, hardness, conductivity, potassium permanganate and potassium.
(16) The congophilia of these forms of amyloid is resistant to potassium permanganate, compatible with it representing immunoamyloid.
(17) A plaque of hydroxyapatite crystals was produced by local subcutaneous injection of a potassium permanganate solution.
(18) The finely granular cytoplasmic pigment seen in the smears was proven to be melanin by the use of potassium permanganate oxidation.
(19) The amyloid deposits found were resistant against potassium permanganate treatment and reacted with anti-human beta 2-microglobulin antibody.
(20) The riboflavin losses increased when potassium permanganate was used at a concentration of more than 2%.