Results 211 to 220 of about 321,660 (261)
Some of the next articles are maybe not open access.
Ferric iron reduction and iron assimilation in Saccharomyces cerevisiae
Journal of Inorganic Biochemistry, 1992We have used the yeast Saccharomyces cerevisiae as a model organism to study the role of ferric iron reduction in eucaryotic iron uptake. S. cerevisiae is able to utilize ferric chelates as an iron source by reducing the ferric iron to the ferrous form, which is subsequently internalized by the cells.
G J, Anderson +5 more
openaire +2 more sources
1984
In the conventional ironing process the maximum reduction per die is limited to 30–40 per cent due to risk of fracture in the wall at the bottom. This means that often 5 or 6 reduction steps are necessary when cups of considerable heights are produced. A theoretical analysis shows that the application of very small die angles, α= 1–4 degs.
N. H. Nielsen, N. Bay, N. K. Frederiksen
openaire +1 more source
In the conventional ironing process the maximum reduction per die is limited to 30–40 per cent due to risk of fracture in the wall at the bottom. This means that often 5 or 6 reduction steps are necessary when cups of considerable heights are produced. A theoretical analysis shows that the application of very small die angles, α= 1–4 degs.
N. H. Nielsen, N. Bay, N. K. Frederiksen
openaire +1 more source
Ferric iron reduction by Cryptococcus neoformans
Infection and Immunity, 1997The pathogenic yeast Cryptococcus neoformans must reduce Fe(III) to Fe(II) prior to uptake. We investigated mechanisms of reduction using the chromogenic ferrous chelator bathophenanthroline disulfonate. Iron-depleted cells reduced 57 nmol of Fe(III) per 10(6) cells per h, while iron-replete cells reduced only 8 nmol of Fe(III). Exponential-phase cells
K J, Nyhus, A T, Wilborn, E S, Jacobson
openaire +2 more sources
1973
A widely observed electronic transition discovered in iron compounds is the reduction from the ferric to the ferrous state. In a series of studies since 1967 such reduction has been observed in perhaps forty to fifty compounds including halides, cyanides, hydrates, salts of organic acids, and a variety of organometallic compounds [1].
H. G. Drickamer, C. W. Frank
openaire +1 more source
A widely observed electronic transition discovered in iron compounds is the reduction from the ferric to the ferrous state. In a series of studies since 1967 such reduction has been observed in perhaps forty to fifty compounds including halides, cyanides, hydrates, salts of organic acids, and a variety of organometallic compounds [1].
H. G. Drickamer, C. W. Frank
openaire +1 more source
Reduction of Copper(II) by Iron(II)
Journal of Environmental Quality, 2005ABSTRACTLaboratory and field investigations have clearly demonstrated the important role of reduced iron (Fe(II)) in reductive transformations of first‐row transition metal species. However, interactions of Fe(II) and copper (Cu) are not clearly understood. This study examined the reduction of Cu(II) by Fe(II) in stirred‐batch experiments at pH 5.2 and
C J, Matocha +3 more
openaire +2 more sources
Reduction of chromate in cement by iron sulfate
Contact Dermatitis, 1979Cement dermatitis is connected with chromate sensitivity. It can therefore be expected that “elimination” of chromate in cement would decrease the number of cases of cement dermatitis.Iron sulfate added to cement reduces the chromate completely and the 3‐valcnl chromium is precipitated. An amount of 0.35 % (w/w) iron sulfate, FeSO4.
S, Fregert, B, Gruvberger, E, Sandahl
openaire +2 more sources
Iron Catalysis in Reduction and Hydrometalation Reactions
Chemical Reviews, 2018The last two decades have seen an impressive improvement of the use of iron as a fascinating and valuable alternative transition metal in homogeneous catalysis in terms of sustainability and economy. It was efficiently used in catalytic organic synthetic transformations, which in particular include the reduction of unsaturated bonds.
Duo Wei, Christophe Darcel
openaire +2 more sources
Reduction of iron by extracellular iron reductases: implications for microbial iron acquisition
Archives of Biochemistry and Biophysics, 2002The extracellular enzymatic reduction of iron by microorganisms has not been appropriately considered. In this study the reduction and release of iron from ferrioxamine were examined using extracellular microbial iron reductases and compared to iron mobilization by chemical reductants, and to chelation by EDTA and desferrioxamine.
openaire +2 more sources
Electrocatalytic Reduction of ROOH by Iron Porphyrins
Journal of the American Chemical Society, 2004Electrocatalytic reduction of a series of chemical oxidants of different power (tert-butyl hydroperoxide, potassium peroxomonosulfate, peracetic acid, and m-chloroperbenzoic acid) at iron-porphyrin-modified graphite electrodes is studied in buffered aqueous solutions by rotating disk and ring-disk voltammetry.
James P, Collman +3 more
openaire +2 more sources
The influence of iron reduction on the reductive biotransformation of pentachloronitrobenzene
European Journal of Soil Biology, 2007The effect of iron reduction on the microbial reductive transformation of pentachloronitrobenzene (PCNB), an organochlorine fungicide, was investigated with a mixed, methanogenic culture enriched from a contaminated sediment. Fe(III)EDTA, Fe(III)citrate (completely bioavailable) and FeOOH (less bioavailable) were used as the iron source.
Didem Okutman Tas +1 more
openaire +1 more source