The new sulfido antimonates(III) (Rb/Cs)3SbS3 were prepared from the alkali metal sulfides Rb2S/Cs2S2 and elemental antimony and sulfur or Sb2S3 at reaction temperatures of about 700 ◦C. The known isotypic potassium compound was similarily synthesized from the elements. The structures of the light-yellow crystals were refined using single-crystal X-ray data. Both compounds are isotypic to the r...

It has been shown previously that antimony evaporated onto a Au(111) surface grows in a layer-bylayer mode. The present work compares the initial, fast-oxidation stage of these films with that on bulk polycrystalline antimony. Measurements were carried out in an ultrahigh-vacuum environment using Auger electron spectroscopy, low-energy electron diffraction, electron-energy-loss spectroscopy, an...

BACKGROUND The aim of this study was to observe the concentrations of trace metals boron, lithium, rubidium, antimony, tin and strontium in the serum of athletes from different modalities and sedentary subjects and the possible influence that different energy sports training modalities can have on their concentration. METHODS Eighty professional athletes and 31 sedentary males participated in...

Pentavalent antimonials, including meglumine antimoniate and sodium stibogluconate, have been used for more than half a century in the therapy of the parasitic disease leishmaniasis. Even though antimonials are still the first-line drugs, they exhibit several limitations, including severe side effects, the need for daily parenteral administration and drug resistance. The molecular structure of ...

Visceral leishmaniasis (VL) caused by the protozoan parasite Leishmania infantum, is one of the most important zoonotic diseases affecting dogs and humans in the Mediterranean area. The presence of infected dogs as the main reservoir host of L. infantum is regarded as the most significant risk for potential human infection. We have studied the susceptibility profile to antimony and other anti-l...

BACKGROUND Drug resistance is a major problem in leishmaniasis chemotherapy. RNA expression profiling using DNA microarrays is a suitable approach to study simultaneous events leading to a drug-resistance phenotype. Genomic analysis has been performed primarily with Old World Leishmania species and here we investigate molecular alterations in antimony resistance in the New World species L. amaz...

The discovery of melamine by Justus von Liebig was fundamental for the development several fields chemistry. vast majority compounds with or derivatives appear as adducts. Herein, we focus on novel containing anionic species, namely melaminates. For this purpose, analyze reaction SbCl3 differential scanning calorimetry (DSC). whole study includes synthesis and characterization three antimony th...

HE CHEMICAL ASSAY of diethylstilbestrol in extremely small amounts has not been previously accomplished in a satisfactory manner. The ultraviolet absorption of diethyistilbestrol has been proposed as a method (1), but this fails in the presence of other absorbing substances in tissue extracts. In addition, the absorption curve lacks any sharply defined band. Measurement of the phenolic function...

Thallium L III-edge x-ray absorption and iron-57 and tin-119 Mössbauer spectral measurements have been carried out to probe the electronic structure of the three sites in the filled skutterudite TlxCo42yFeySb12 and TlxCo4Sb122zSnz compounds with a range of x, y, and z values. The thallium L III-edge x-ray absorption spectra are independent of x, y, and z and are well reproduced by full multiple...

In recent years, several reports have emphasized the increasing importance of visceral leishmaniasis as an opportunistic infection among HIV-positive patients in areas where both infections are endemic. Major challenges in the treatment of leishmaniasis include widespread resistance to pentavalent antimonial compounds, absence of safe chemotherapeutic agents, and treatment failure and relapses ...