Zinc oxide (ZnO) nanoparticles may provide a more soluble and plant available source of Zn in Zn fertilizers due to their greater reactivity compared to equivalent micron- or millimetre-sized (bulk) particles. However, the effect of soil on solubility, spatial distribution and speciation of ZnO nanoparticles has not yet been investigated. In this study, we examined the diffusion and solid phase...

BACKGROUND Low concentrations of nitric oxide (NO) are necessary for the biology and physiology of spermatozoa, but high levels of NO are toxic and have negative effects on sperm functions. Although several studies have considered the relationship between infertility and semen NO concentrations, no study on the effects of asthenospermia treatments such as oral zinc supplementation on concentrat...

The objective of this study was to evaluate effects of zinc oxide nanoparticles (nano-ZnOs) as a substitute for colistin sulfate (CS) and/or zinc oxide (ZnO) on growth performance, serum enzymes, zinc deposition, intestinal morphology and epithelial barrier in weaned piglets. A total of 216 crossbred Duroc×(Landrace×Yorkshire) piglets weaned at 23 days were randomly assigned into 3 groups, whic...

an experiment was conducted to study wheat grain protein increasing through foliar application of nitrogen afterflowering. the rcbd design was analysed with three replications and four n-treatments as foliar application as(n0=0, n1=4kg.ha-1 urea, n2=8kg.ha-1 urea, n3=4kg.ha-1 ammonium sulfate). results showed that seed proteincontent increased significantly by foliar application of nitrogen. da...

Background: Since heavy metals can accumulate in the tissues of aquatic organisms, they can cause a range of hazardous effects which can become harmful to humans. The aim of this study was to investigate the acute effects of some heavy metals as potential dangerous substances by assessing the mortality effects of Mercuric Chloride (HgCl2), Lead Chloride (PbCl2) and Zinc Sulfate (ZnSO4) pollutan...

Background: Different local and systemic modalities are suggested in the treatment of cutaneous leishmaniasis (CL), but the pentavalent antimony compounds are still considered as the first line of treatment. Regarding to increase in clinical drug resistance, adverse effects and low compliance of patient, efforts for finding a more effective and safer drug continue. Objectives: To evaluate...

When 2-amino-2-methyl-1-propanol buffer solutions are extracted with chloroform, impurities inhibiting alkaline phosphatase are selectively removed and this source of variation is thereby greatly decreased. We also studied the effect of adding zinc sulfate to this buffer. A combination of chloroform extraction and zinc sulfate, added to give concentrations from 5 to 10 mumol/L, results in buffe...

In subtropical blackberry ( Rubus L. subgenus Watson) production, inadequate winter chill causes poor and erratic budbreak, whereas high temperatures heavy rainfall deteriorate late-season fruit quality. We examined the effects of four defoliants [zinc sulfate (ZS), potassium thiosulfate (KTS), urea, lime sulfur (LS)] on defoliation, yield, quality ‘Natchez’ grown under chilling conditions in t...

The protection of metallic surface is commonly done with zinc phosphate in acid aqueous phosphate solutions containing zinc ions and phosphoric acid, as well in addition of other metallic ions (nickel, chromium, calcium, niobium etc.), in presence of accelerators as nitrate ions, hydroxylamine sulfate, benzotriazole and others. The present article is a study on the surface structure of zinc pho...

in order to evaluate the effects of irrigation levels and foliar application with fe and zn on quantitative and qualitative traits of red bean, an experiment was designed as split plot based on a completely randomized block design with three replications in lordegan country in summer 2011. irrigation as the main plot at three level such on: irrigation after 50, 75 and 100 mm evaporation, and fo...