Using first-principles calculations, we chart the chemical space of 3d transition metal-based NaSICON phosphates with formula NaxMM′(PO4)3 (with M and M′ = Ti, V, Cr, Mn, Fe, Co Ni). Novel compositions were revealed.

Enzymes that are capable of hydrolyzing ribonucleoside 2’, 3’cyclic phosphates but that do not attack intemucleotide bonds are available from various sources (1). Several of these enzymes convert ribonucleoside 2’,3’-cyclic phosphates to the corresponding ribonucleoside 2’-phosphates. The first die&erase of this type was studied in calf spleen by Whitfeld, Heppel, and Markham (2). Davis and All...

The diacylglycerol kinase inhibitor R59022 (10 microM) potentiates secretion and aggregation responses in human platelets challenged with sub-maximal concentrations of thrombin. Potentiation correlates closely with increased formation of diacylglycerol, increased phosphorylation of a 40 kDa protein, a known substrate for protein kinase C, and with decreased formation of phosphatidic acid, the p...

The aim of this study was to evaluate the effect of three different chemical feed phosphates on the blood biochemical indicators and the content of main minerals of bones in finishing pigs. Over a period of 85 days of fattening, monocalcium (MCP, Finnish product), dicalcium (DCP, Polish product) and calcium-sodium (CSP, Russian product) phosphates were used in fattener feeding. The feeding was ...

This paper is devoted to the application of new low cost ceramic ultrafi ltration membranes material coming from the Tunisian ores (mud) which is usually considered as disastrous for the environment. A ceramic tubular support previously elaborated from mud was coated in the lumen side by slip casting method. After sintering at 650°C, the coated membrane shows homogeneou...

Previous studies of Europe-Finner & Newell indicated that in amoebae of Dictyostelium discoideum, signal transduction used for chemotaxis to cyclic AMP involved transient formation of inositol tris- and polyphosphates. Evidence was also presented for the involvement of a GTP-binding G-protein. Here we report evidence for the involvement of a ras gene product in the D. discoideum inositol phosph...