A field experiment was carried out in the Research and Production Station, National Research Center, El-Nobaria during the season, 2009 to evaluate the effect of cobalt and different sources of phosphorus fertilizers on the growth, yield quantity and quality of tomato. Treatments can be arranged in descending order as follows: Mono super phosphate (MSP) > Triple super phosphate (TSP) > Rock pho...

Black phosphorus was compressed at room temperature across the A17, A7 and simple-cubic phases up to 30 GPa, using a diamond anvil cell and He as pressure transmitting medium. Synchrotron X-ray diffraction showed the persistence of two previously unreported peaks related to the A7 structure in the pressure range of the simple-cubic phase. The Rietveld refinement of the data demonstrates the occ...

• Interest in this laboratory has been directed toward the pathogenesis of plaque formation and general tissue change in the aortae of rabbits with induced atherosclerosis. Specifically, components of the tissue involving sulfate and phosphorus in relation to localization and chemical composition have been dealt with in some detail. In this communication, the action of the chelating agent ethyl...

Arsenic and phosphorus are group 15 elements with similar chemical properties. Is it possible that arsenate could replace phosphate in some of the chemicals that are required for life? Phosphate esters are ubiquitous in biomolecules and are essential for life, from the sugar phosphates of intermediary metabolism to ATP to phospholipids to the phosphate backbone of DNA and RNA. Some enzymes that...

We studied nutrient balance in a paddy field that had a recycling irrigation system and evaluated the effect of the irrigation system on nutrient balance during the irrigation period, from April to August 2002. Chemical fertilizer was the main input of phosphorus; the soil absorbed about 56% of it. The amount of nitrogen supplied by the irrigation system was higher than in a representative padd...

Phosphorus (P) is considered to be one of the key elements for life, making it an important element look in abundance analysis spectra stellar systems. Yet, there exists only a handful spectroscopic studies estimate P abundances and investigate its trend across range metallicities. We have observed full HK band at spectral resolving power R=45,000 with IGRINS instrument. Abundances are determin...