نتایج جستجو برای: strontium sulfide
تعداد نتایج: 24525 فیلتر نتایج به سال:
AIMS The study was performed to assess the safety of strontium ranelate in accordance with the ICH, E14 guidelines for QT/QT(c) studies. Its primary objective was to compare supratherapeutic repeated dosing of strontium ranelate (4 g day⁻¹ for 15 days) with placebo on the largest time-matched mean QT(c) variation, from baseline to under treatment values, in healthy subjects. METHODS Ninety-si...
Hydrogen sulfide is a highly toxic gas-second only to carbon monoxide as a cause of inhalational deaths. Its mechanism of toxicity is only partially known, and no specific therapy exists for sulfide poisoning. We show in several cell types, including human inducible pluripotent stem cell (hiPSC)-derived neurons, that sulfide inhibited complex IV of the mitochondrial respiratory chain and induce...
Strontium Tetraborate doped with Lead SrB4O7:Pb powder was prepared by solid state method. The formation of Strontium Tetraborate compound was analyzed by X-ray diffraction (XRD) and Scanning Electron Microscopy (SEM). Thermoluminescence Glow Curve of gamma irradiated sample was investigated in order to use as a thermoluminescent dosimeter. Because of excellent mechanical properties, non-hygros...
A new chemiluminescence method is proposed for the determination of sulfide in seawater based on the chemiluminescence reaction between sulfide and an acidic permanganate solution. 3-Cyclohexylaminopropanesulfonic acid was used as a chemiluminescence enhancer. By use of this method, 1-150 µM of sulfide could be determined in artificial seawater. The limit of detection was 0.17 µM sulfide. We in...
The measurement of sulfide, especially hydrogen sulfide, has held the attention of the analytical community due to its unique physiological and pathophysiological roles in biological systems. Electrochemical detection offers a rapid, highly sensitive, affordable, simple, and real-time technique to measure hydrogen sulfide concentration, which has been a well-documented and reliable method. This...
Recent advances in nanotechnology could facilitate the production of cheaper solar cells. This review describes synthetic routes to various nanostructured materials that are potentially useful in photovoltaic applications. We have focused on materials that are based on earth abundant elements and/or those that are held to have lower toxicity. Methods to synthesize binary chalcogenides with vari...
Kinetics and stoichiometry of aerobic chemical and biological sulfide oxidation in wastewater from sewer networks were studied. In this respect, the effects of temperature and pH were investigated in the ranges 10 to 20 degrees C and 5 to 9, respectively. The temperature dependency of sulfide oxidation kinetics was described using an Arrhenius relationship. The effect of pH on the rate of chemi...
The hemoglobin of the deep-sea hydrothermal vent vestimentiferan Riftia pachyptila (annelid) is able to bind toxic hydrogen sulfide (H(2)S) to free cysteine residues and to transport it to fuel endosymbiotic sulfide-oxidising bacteria. The cysteine residues are conserved key amino acids in annelid globins living in sulfide-rich environments, but are absent in annelid globins from sulfide-free e...
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