Rigorously standardized laboratory protocols are essential for meaningful comparison of data from multiple sites. Considering that interactions of minerals with organic matrices may vary depending on the material nature, there could be peculiar demands for each material with respect to digestion procedure. Acid digestion procedures were evaluated using different nitric to perchloric acid ratios...

abstract many agricultural researches have been performed to improve soil productivity. nitrogen (n) and phosphorus (p) are essential elements which are utilized by the plants in large amounts. phosphorus can be provided by applying chemical fertilizers. microorganisms convert insoluble phosphate to the soluble form and some bacteria such as rhizobacteria play an important role in this process....

The most marked chemical changes in a disintegrating spleen are noticed during the period when karyorrhexis and karyolysis are the characteristic features. When pyknosis alone is prominent almost all of the several constituents are in the coagulable or precipitable fraction, just as they are in the original normal tissue. After karyolysis is practically complete the coagulable and precipitable ...

A mild method for the facile removal of phosphine oxide from the crude products of Wittig and Appel reactions is described. Work-up with oxalyl chloride to generate insoluble chlorophosphonium salt (CPS) yields phosphorus-free products for a wide variety of these reactions. The CPS product can be further converted into phosphine.

Black Sea receives 1,125,839 tons of organic matter, 575,000 tons mineral nitrogen, 55,000 tons mineral phosphorus, 30,000 tons organic phosphorus, 90,000 tons iron, 206,000 tons petroleum and petroleum products, 48,000 tons surfactant, 12,000 tons zinc, 67,000 tons manganese, 4,500 tons lead, 2,800 tons copper, 900 tons cadmium and 80 tons of mercury in a year from land based sources. All thes...

The effects of two dietary proteins on α-amino acids, calcium and phosphorus concentrations in plasma, stomach and intestine were investigated in rats trained to consume, in a single two-hour daily meal, diets containing α-lactalbumin (α-la) or whey protein concentrate (WPC) for two weeks. The results indicated that the concentrations of calcium and phosphorus in the gastrointestinal tract and ...

This review discusses about phosphorus and zinc fertilizer consumption led to increasing yield components of the crops. The objectives this were focuses on impact application fertilizers crop plants their importance performance enhancement. other important aspect nutrition is interaction effect between them, especially in soils marginally deficient zinc. When fertilized together, such soils, yi...

The potential of near infrared spectroscopy (NIR) with remote reflectance fiber-optic probes for determining the mineral composition of propolis was evaluated. This technology allows direct measurements without prior sample treatment. Ninety one samples of propolis were collected in Chile (Bio-Bio region) and Spain (Castilla-León and Galicia regions). The minerals measured were aluminum, calciu...