METHODS A 2.8M phosphate buffer is prepared by dissolving 21.7 Gm. dibasic potassium phosphate (K2HPO4) and 16.9 Gm. monobasic potassium phosphate (KH2PO4) in distilled water free of CO2. The volume is adjusted to 100 ml. To 1.8 ml. of this buffer, 20 mg. of sodium hydrosulfite (Na2S2O4) and 0.2 ml. of buffered hemolysate (3) are added in a small test tube. After 15 minutes or longer the mixtur...

The concentrations of nutrients in the leaves allow a better understanding nutritional status oil palm plants, making it tool for diagnosing origins problems and assisting fertilizer recommendations. In this sense, objective current research was to evaluate leaf N, P, K, Ca, Mg S under fertilization with phosphate, potassium magnesium edaphoclimatic conditions Eastern Amazon. experiment conduct...

Mycorrhizal associations are known to improve the hydro-mineral nutrition of their host plants. However, the importance of mycorrhizal symbiosis for plant potassium nutrition has so far been poorly studied. We therefore investigated the impact of the ectomycorrhizal fungus Hebeloma cylindrosporum on the potassium nutrition of Pinus pinaster and examined the involvement of the fungal potassium t...

The degradation behavior of cefixime trihydrate was investigated under different stress conditions of acidic hydrolysis, alkaline hydrolysis and oxidation using spectrophotometry. Stability indicating spectrophotometric methods were developed that could separate the drug from its degradation products formed under these stress conditions. The UV spectral characteristics of the drug and degraded ...

introduction: citrus are one of the important orchard fruit production that after banana is second in production at the world level and every year, chemical fertilizers having most important role in increasing crops productions, but in long application of fertilizers cause soil destructions and polluting underground water. also soils of dry regions are very poor in organic matter level. nowaday...

Exo-polysaccharides like dextran produced by Weissella sp. have a wide range of applications in the food, pharmaceutical and other industries. This biopolymer and its derivatives like iron dextran, clinical dextran are rapidly emerging as a new and industrially important products. Dextran a polymer of glucose is produced using sucrose rich media with nitrogen source. It also requires efficient ...

The title compound, (C(4)H(8)N(3)O)(H(3)O)[Ni(C(7)H(3)NO(4))(2)]·3H(2)O, exhibits isotypism with its Co(II) analogue. All intramolecular distances and angles are similar for the two structures. This applies also for the intermolecular forces, consisting of O-H⋯O and N-H⋯O hydrogen bonds and π-π interactions [with centroid-centroid distances of 3.428 (2) and 3.579 (2) Å], that lead to a cohesion...

In the title compound, (C(3)H(12)N(2))[Zr(C(7)H(3)NO(4))(3)]·3H(2)O, the Zr(IV) cation is chelated by three pyridine-2,6-dicarboxyl-ate anions in a distorted tricapped trigonal-prismatic environment. The crystal structure is stabilized by inter-molecular N-H⋯O and O-H⋯O hydrogen bonds.