Abstract In this research, a recycling process for palladium using “dry aqua regia,” which consists of iron(III) chloride–potassium chloride, was proposed. Palladium dissolved in and the recovered by leaching with potassium chloride solution added ammonium nitric acid. almost completely 3 h at 600 K, recovery ratio up to 80%. addition, dissolution coexistence platinum platinum-palladium alloy r...

Isotopic effects occuring during the evaporation of microgram quantities of chemically pure rubidium, potassium and lithium compounds are studied. The measured isotopic ratios show a time dependent variation corresponding to a RAYLEIGH distillation. The fractionation factor is equal to the square root of the ratio of the masses. The highest observed enrichments are 45% for lithium, 10% for pota...

This article focuses on the agronomic evaluation of supplementation mineral NPKMg fertilizers with elemental sulfur, magnesium, potassium, or ammonium sulfates in pot experiments ryegrass growing a sandy Arenosol very low sulfur content. A benefit was carried out basis biomass production, crop nutritional status, and changes content soil organic matter fractions. Furthermore, total number bacte...

Reproductive hormone secretions are inhibited by fasting and restored by feeding. Metabolic signals mediating these effects include fluctuations in serum glucose, insulin, and leptin. Because ATP-sensitive potassium (K(ATP)) channels mediate glucose sensing and many actions of insulin and leptin in neurons, we assessed their role in suppressing LH secretion during food restriction. Vehicle or a...

ATP-sensitive potassium channels (K(ATP) channels) are heteromultimers of sulfonylurea receptors (SUR) and inwardly rectifying potassium channel subunits (K(IR)6.x) with a (SUR-K(IR)6.x)4 stoichiometry. Association is specific for K(IR)6.x and affects receptor glycosylation and cophotolabeling of K(IR)6.x by 125I-azidoglibenclamide. Association produces digitonin stable complexes with an estima...

This study aimed to investigate the concentrations effect of some Electrolytes (Sodium, Potassium, and Magnesium) Lipids compounds (Cholesterol, Triglycerides, high density lipoprotein, low very lipoprotein), sex hormones (estrogen testosterone) on atherosclerosis disease. The included a comparison between 60 patients from both male female with heart disease, 40 healthy gender. age ranged (30 -...

Gram negative pathogens are protected against toxic electrophilic compounds by glutathione-gated potassium efflux systems (Kef) that modulate cytoplasmic pH. We have elucidated the mechanism of gating through structural and functional analysis of Escherichia coli KefC. The revealed mechanism can explain how subtle chemical differences in glutathione derivatives can produce opposite effects on c...

The uncoupling activity of nigericin in rat liver mitochondria was found to be proportional to the external concentration of potassium. Rubidium (40% as effective as potassium) was the only other alkali metal cation that permitted significant uncoupling. The ability of nigericin selectively to inhibit (at low concentrations) and to uncouple (at high concentrations) only certain substrates was i...

Cell-free protein synthesis provides rapid and economical access to selectively 15N-labelled proteins, greatly facilitating the assignment of 15N-HSQC spectra. While the best yields are usually obtained with buffers containing high concentrations of potassium L-glutamate, preparation of selectively 15N-Glu labelled samples requires non-standard conditions. Among many compounds tested to replace...