The complexation of Cd2+ by diallyl disulfide (DADS) and diallyl sulfide (DAS) has been studied by differential pulse voltammetry. Stability constants, (log β), of the 1:1 (PbL) and 1:2 (PbL2) complexes, where L = ligand, were found to be in the range of ca. 5.8 - 6.2 and 9.6 -10.6, respectively. Complex formation is accompanied with a significant decrease in the peak current and the shift of t...

This 68-year-old patient with Stage 4 chronic kidney disease was reviewed in our low clearance clinic 2 months after formation of a left arteriovenous fistula. The prominent ‘half-and-half’ appearance of his nails was noted. Nail disorders are common in chronic renal failure, affecting up to 70% of haemodialysis patients [1]. Half-and-half or Lindsay nails [2], where the proximal half of the na...

Sulfur mustard, a bifunctional alkylating agent, causes severe eye injury. The injury is a result of late inflammation, which is mediated by prostaglandins. Theoretically, inhibition of prostaglandins by reagents such as indomethacine could result in alleviation of clinical adverse effects. In this study, the protective effect of topically applied indomethacine against sulfur mustard toxici...

The Firmicutes Thermoanaerobacter sulfurigignens and Thermoanaerobacterium thermosulfurigenes convert thiosulfate, forming sulfur globules inside and outside cells. X-ray absorption near-edge structure analysis revealed that the sulfur consisted mainly of sulfur chains with organic end groups similar to sulfur formed in purple sulfur bacteria, suggesting the possibility that the process of sulf...

1. Saturated solutions of sulfur in alcohol (alcohol-sulfur) when diluted with broth are inhibitory to the growth of various Gram-positive bacteria and to C. hominis. By an arbitrary method of unitage with S. aureus as the test organism, our alcohol-sulfur contains 1,600 to 2,000 units per cc. and one unit contains between 0.24 and 0.34 gamma sulfur. The activity of a preparation is in general ...

the sulfur regulatory circuit of the filamentous fungus, neurospora crassa, consists of a set of unlinked structural genes which encode sulfur catabolic and two major regulatory genes which govern their expression. the cys-3 regulatory gene encode a transacting regulatory protein which activates the expression of cys-14 and ars, whereas the other regulatory genes scon-l and scon-2 appear to act...

large reserves of coal in tabas region of iran are characterized by low ash and high caking index, suitable for use in metallurgy as coking coal. however, these coals cannot be gainfully utilized because of their high sulfur content. in this work, studies on desulfurization of tabas coals were carried out in a batch reactor using various reagents. the most effective reagents, fe2(so4)3 , fecl3 ...

99mTc-octreotide scintigraphy, performed during the following up a 58-year old man with neuroendocrine tumor demonstrated massive hepatomegaly demonstrating multiple areas of increased and decreased uptake. Due to severe hepatomegaly concurrence of any other abdominal soft tissue lesions could not be excluded. A 99mTc-sulfur colloid scan was done and thoroughly compared wi...

The group I intron from the rRNA precursor of Tetrahymena undergoes self-splicing. The intron RNA catalyst contains about 400 phosphate groups. Their role in catalysis has been investigated using phosphorothioate substituted RNA. In such RNA one of the peripheral oxygens of the phosphodiesters is replaced with sulfur. Incorporation of adenosine 5' phosphorothioate in either the 5' or 3' half of...