1. N-Acetylgalactosamine 6-sulphate sulphatase was purified about 20000-fold from the soluble extract of human placenta with N-acetylgalactosamine 6-sulphate-glucuronic acid-N-acetyl[1-(3)H]galactosaminitol 6-sulphate as substrate in the activity assay. The enzyme appears to be a glycoprotein with a mol.wt. of about 100000 as determined by gel filtration. On gel electrophoresis in the presence ...

The structural and electrical properties of polyaniline-cobalt sulphate nanocomposite prepared by chemical method.Polyaniline-cobalt sulphate nanocomposites were synthesized by the cobalt sulphate and ammonium persulphate and aniline.This paper reports on chemical technique using for synthesis of cobalt nanoparticles in the composite bridge is aniline. Electrical conductivity of polyaniline wit...

The structural and electrical properties of polyaniline-cobalt sulphate nanocomposite prepared by chemical method.Polyaniline-cobalt sulphate nanocomposites were synthesized by the cobalt sulphate and ammonium persulphate and aniline.This paper reports on chemical technique using for synthesis of cobalt nanoparticles in the composite bridge is aniline. Electrical conductivity of polyaniline wit...

The title oxidovanadium(V) complex, [V(C(17)H(17)N(3)O(2))(CH(3)O)O], was obtained by the reaction of 2-acetyl-phenol, 4-dimethyl-amino-benzohydrazide and vanadyl sulfate in methanol. The V(V) atom is five-coordinated by N,O,O'-donor atoms of the Schiff base ligand, one meth-oxy O atom and one oxide O atom, forming a square-pyramidal geometry.

Oxovanadium(IV) complexes of the type [VO(mac)]SO4 , (where mac = tetraaza macrocyclic ligands derived by condensation of furil with 1,4-diaminobenzene or 3,4-diaminopyridine and their reaction with βdiketones) have been prepared using vanadyl ion as kinetic template. Tentative structures of the complexes have been proposed on the basis of elemental analysis, infrared, e.s.r. and electronic dat...

The investigation of charge transport in organic nanocrystals is essential to understand nanoscale physical properties of organic systems and the development of novel organic nanodevices. In this work, we fabricate organic nanocrystal diodes contacted by rolled-up robust nanomembranes. The organic nanocrystals consist of vanadyl phthalocyanine and copper hexadecafluorophthalocyanine heterojunct...

1. The metabolism of inorganic [(35)S]sulphate (Na(2) (35)SO(4)) was studied in the isolated perfused rat liver at three initial concentrations of inorganic sulphate in the perfusion medium (0, 0.65 and 1.30mm), in relation to sulphation and glucuronidation of a phenolic drug, harmol (7-hydroxy-1-methyl-9H-pyrido[3,4-b]indole). 2. [(35)S]Sulphate rapidly equilibrated with endogenous sulphate in...

The metabolic fate of potassium dodecyl [(35)S]sulphate was studied in rats. Intraperitoneal and oral administration of the ester into free-ranging animals were followed by the excretion of the bulk of the radioactivity in the urine within 12hr., approximately 17% being eliminated as inorganic [(35)S]sulphate. Similar results were obtained in experiments in which potassium dodecyl [(35)S]sulpha...

Chemical and spectroscopic studies have shown that in agricultural soils most of the soil sulphur (>95%) is present as sulphate esters or as carbon-bonded sulphur (sulphonates or amino acid sulphur), rather than inorganic sulphate. Plant sulphur nutrition depends primarily on the uptake of inorganic sulphate. However, recent research has demonstrated that the sulphate ester and sulphonate-pools...