نتایج جستجو برای: fe b
تعداد نتایج: 968369 فیلتر نتایج به سال:
Bacillus anthracis is a severe mammalian pathogen encoding a class Ib ribonucleotide reductase (RNR). RNR is a universal enzyme that provides the four essential deoxyribonucleotides needed for DNA replication and repair. Almost all Bacillus spp. encode both class Ib and class III RNR operons, but the B. anthracis class III operon was reported to encode a pseudogene, and conceivably class Ib RNR...
Due to wasteful use of low-quality irrigation water, many agricultural lands in arid and semi-arid regions of Iran are confronted with salinity phenomenon. Salinity decreases growth and yield of plants, therefore, ways to combat deleterious effects of soil salinity on plant growth should be sought. One of these strategies is physiological prevention of salt accumulation in plants and increasing...
A study was designed to evaluate the micronutrients status of soils of district Palandri, Azad Kashmir and to correlate the micronutrients with Physico-chemical characteristics of soil as well as to categorize the soils as high, medium and low in Cu, Zn, Fe, Mn and HWS B. Soil samples were collected from thirty wheat fields and thirty apple orchard soils during 2003. None of the soil sample was...
In this study, we show that Bacteroides species utilize Fe(III)-xenosiderophores as the only source of exogenous iron to support growth under iron-limiting conditions in vitro anaerobically. Bacteroides fragilis was the only species able to utilize Fe(III)-ferrichrome while Bacteroides vulgatus ATCC 8482 and Bacteroides thetaiotaomicron VPI 5482 were able to utilize both Fe(III)-enterobactin an...
The magnetoconductivity in Fe doped YBa 2 Cu 3 O 7-δ single crystals has been measured in the temperature region above T c where superconducting fluctuations are known to be important. For small Fe concentrations and B//c we obtain excellent agreement with accepted fluctuation theories. However, at higher Fe concentrations this description seems to break down. For B⊥c we observe an anomalous de...
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