نتایج جستجو برای: ferric ion
تعداد نتایج: 218142 فیلتر نتایج به سال:
The therapeutic effects of several plants used in traditional medicine are usually attributed to their antioxidant potential. Phragmanthera incana belonging the family Loranthaceae is a species mistletoe commonly found South-Western part Nigeria and ethno-medicinally management diseases such as diabetes, hypertension oxidative stress. This study evaluates compare potential methanol extracts P. ...
Although many rhodamine based fluorescence sensors were reported to detect metal ions with high sensitivity and selectivity, there are very few reports available to study the mechanisms of detection and the interaction between probe and metal ions. This paper aims to detect ferric ions by novel fluorescence chemosensors and study the mechanisms in detail. A novel probe AD-MAH-RhB was designed a...
Ferric uptake regulator (Fur) plays a key role in the iron homeostasis of prokaryotes, such as bacterial pathogens, but the molecular mechanisms and structural basis of Fur-DNA binding remain incompletely understood. Here, we report high-resolution structures of Magnetospirillum gryphiswaldense MSR-1 Fur in four different states: apo-Fur, holo-Fur, the Fur-feoAB1 operator complex and the Fur-Ps...
A theoretical and experimental study has been carried out on flow, dissolution, and precipitation in porous media. Flow experiments were performed on linear carbonate cores using acidic ferric chloride solutions. Dissolution of the carbonate by the acid causes an increase in the solution pH, thereby precipitating ferric hydroxide. This precipitate plugs up the pore throats in the medium and inc...
In an effort to find practical means of distinguishing iron deficiency anemias from other types in large population groups, an investigation was made of the possibility of measuring iron in an amount of blood serum obtainable from the finger. Iron deficiency anemias are characterized by low serum iron, while other states of diminished hemoglobin formaCon show normal or even high values for seru...
In the present study, the antioxidant activity of different concentrations of protein hydrolysate from Common carp (Cyprinus carpio) head at different hydrolysis time was investigated. For this purpose, 8 Common carp fish with average weight of 0.766±0.034 kg were prepared from market. Fish heads were hydrolyzed by Alcalase (1% v/w at 55˚C and pH 8) at different hydrolysis times (30, 60, 120 an...
are recorded at 3-monthly intervals. Females had a higher Hb than males when considered as an overall trend throughout the period. There was no effect of social class or weight gain from birth in either sex. Birthweight was significantly related to Hb at 3 months in males only and at no other age. There was no relation between illness and Hb. Compared with earlier series in England, the level o...
Ammonium was shown to be a limiting nutrient for iron oxidation in cultures of Thiobacillus ferrooxidans. In addition, one strain was also able to assimilate nitrate, but not nitrite, for growth and coupled iron oxidation. Some amino acids (0.5 mM) were tested as a source of nitrogen; none clearly stimulated bacterial activity and inhibition was commonly encountered. Complex nitrogenous compoun...
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