total phenolic contents (tpc) of five different extracts (petroleum ether, dichloromethane, ethyl acetate, ethanol and ethanol-water) of artemisia biennis willd were measured in this work. the antioxidant activity was investigated by three different methods: β-carotene bleaching (bcb) test, 2,2-diphenyl-1-picrylhydrazyl (dpph) radical scavenging method and ferrous ion chelating (fic) assay. amo...

Three experiments involving 296 pigs were conducted to determine the related effects of copper sulfate and ferrous sulfide on performance and liver copper and iron stores of growing-finishing pigs, and the effect of ferrous sulfide on the depletion of copper from the liver. The dietary addition of 250 ppm copper alone improved growth rate by 9.2% (621 vs 678 g/day) and feed to gain ratio by 3.3...

In the title compound, [FeCl(2)(C(18)H(12)N(2))], the Fe(II) atom is four-coordinated in a distorted tetra-hedral arrangement by an N,N'-bidentate 2,2'-biquinoline ligand and two chloride ions. In the crystal, there are extensive π-π contacts between the pyridine rings [centroid-centroid distances = 3.7611 (3), 3.7603 (4), 3.5292 (4), 3.5336 (5) and 3.6656 (4) Å].

BACKGROUND In soils and sediments, manganese oxides and oxygen usually participate in the oxidation of ferrous ions. There is limited information concerning the interaction process and mechanisms of ferrous ions and manganese oxides. The influence of air (oxygen) on reaction process and kinetics has been seldom studied. Because redox reactions usually occur in open systems, the participation of...

Transferrin receptor-2 (TFR2) regulates hepatic hepcidin secretion and when mutated causes type-3 hemochromatosis. No functional study is available in humans. We studied a 47 year-old woman with hemochromatosis. TFR2 DNA and its hepatic transcript were directly sequenced. Hepatic expression of hepcidin and other iron-related genes were measured by qRT-PCR. Urinary hepcidin was measured at basel...

The oxidation of ferrous iron and elemental sulfur by Thiobacillus ferrooxidans that was absorbed and unabsorbed onto the surface of sulfur prills was studied. Unadsorbed sulfur-grown cells oxidized ferrous iron at a rate that was 3 to 7 times slower than that of ferrous iron-grown cells, but sulfur-grown cells were able to reach the oxidation rate of the ferrous iron-adapted cells after only 1...

Aqueous rechargeable batteries have received widespread attention due to their excellent power density, simple manufacturing process, and inexpensive electrolyte. Iron-ion are expected meet the goals of high safety, low cost, non-toxicity pursued in field batteries. However, passivation, parasitic hydrogen evolution reaction (HER), electroplating efficiency (50%-70%) limit improvement electroch...

This work presents the results of synthesis granular copolymers acrylonitrile with hexahydro-1,3,5-triacrylyltriazine and their modification organic amines, in particular diethylamine, as well a study physicochemical characteristics sorption properties obtained ion exchangers. The result was exchangers necessary based on divinylbenzene, N,N´-methylene-bis-acrylamide hexahydro-1,3,5-triacrylyltr...