Neutron diffraction and 31P nuclear magnetic resonance spectroscopy were used to probe the structure of phosphate glass biomaterials of general composition (CaO)0.5-x(Na2O)x(P2O5)0.5 (x = 0, 0.1 and 0.5). The results suggest that all three glasses have structures based on chains of Q2 phosphate groups. Clear structural differences are observed between the glasses containing Na2O and CaO. The P-...

this study planed to determine appropriate planting date and proportion of alfalfa and barley in mixed cropping. experiment carried out in khair abad station of agricultural and natural resources research center of zanjan for five years (2004-2007), using split plot design which main plot was planting date (aug .15, sep.26 and oct .6) and subplot contain alfalfa to barley ratio, barley, alfalfa...

Effects of acute hypercapnia on the cardiovascular system (CYS) were studied in the anesthetized cat. After surgery the animal was exposed to a gas mixture of 12% CO2 and 25% O2 in nitrogen, and hypercapnia with low levels of arterial pH (pHa) was produced for 20 minutes. In the second run the same level of hypercapnia was induced by ventilating the same cat from the above gas mixture but ...

Background: A field experiment was conducted at Instructional Farm, Department of Agronomy, College Agriculture, Junagadh Agricultural University, during rabi 2016-17 to study the Effect phosphorus and sulphur fertilization on growth, yield quality fenugreek (Trigonella foenum-graecum L.). Method: The laid out in factorial randomized block design with three replications. Treatment combinations ...

Assays were performed that measured both the rate and extent (or total capacity) of transfer RNA methylases in extracts of lymphocytes cultured in the presence and absence of phytohemagglutinin (PHA). The tRNA methylases of human peripheral blood lymphocytes undergoing blastogenesis in culture with PHA had a fiveto sixfold increase in rate and a threeto sevenfold increase in extent of methylati...

In calcareous soils, wheat productivity is much lower due to improper nutrient management, especially phosphorus (P). Therefore, this study was conducted manage P availability from various organic (Control, FYM and Sugar cane straw applied at the rate of 10 ton ha?1) inorganic 100% rock phosphate (RP), 50% acidulated RP, single super (SSP) diammonium (DAP)) sources 90 kg P2O5 ha?1 in soil while...