A multiedge study of the local structure lithium borate glasses and melts has been carried out using X-ray Raman scattering (XRS) as a function temperature. Thanks to wide range compositions, from pure B2O3 up metaborate composition, we are able finely interpret modifications environment both boron oxygen atoms in terms coordination number, formation nonbridging oxygens (NBOs), polymerization d...

abstract due to calcareous soil conditions, zinc deficiency is a yield limiting factor for wheat production in iran. one solution for this problem is the cultivation of zn-efficient wheat varieties. ten wheat cultivars (nine bread wheat and one durum wheat) with different tolerance to zn deficiency were studied in a greenhouse experiment. plants were treated with zn (10 mg zn kg-1 soil as znso4...

zinc sulphate is currently used for treatment of zinc deficiency. its uptake by the body is poor, necessitating the administration of high doses. this leads to a range of unpleasant side effects. in order to increase the bioavailability of zinc, several zinc complexes have been designed and synthesized using bidentate ligands of hydroxypyranones and hydroxypyridinones. elemental analysis in eac...

after iron deficiency, zinc deficiency is the major micronutrient deficiency in developing countries, and staple food fortification is an effective strategy to prevent and improve it among at-risk-populations. no action has been taken to reduce zinc deficiency via flour fortification so far in iran, and little is known about the influence of zinc fortification of flour on serum zinc and the iro...

desferroxamine (desferal) is used tochelate iron in thalassemia, a disease of very high prevalence in various parts of lran. we have investigated intestinal zinc absorption in desferal-treated rats which, in pilot experiments, showed low serum levels of both iron and zinc. intraperitoneal administration of ten 0.5 g doses of desferal (one injection every other day) to male rats produced severe ...

objective â  febrile convulsion (fc) is a common cause of seizure in young children, withâ an excellent prognosis. in addition to genetic predisposition and infections,fcs are generally thought to be induced by metabolic and elemental changesâ during fever such as zinc (zn) deficiency. regarding the high prevalence ofâ febrile convulsions and the role of zn deficiency, we investigated the role ...