نتایج جستجو برای: cu and mn
تعداد نتایج: 16847340 فیلتر نتایج به سال:
Nitrogen is usually the most limiting nutrient for crop production. Thus, N fertilizer is widely used by farmers. Moreover, Mn deficiency in some calcareous soils of Iran with high pH has been reported. Therefore, the addition of nitrogen and manganese to achieve the optimum yield is necessary. The objective of this study was to evaluate the effect of N and Mn applications on the availability o...
In the study, the variations of heavy metal distributions (of Cu, Mn, Pb, and Zn) during the sewage sludge composting process were investigated by sequential extraction procedures. The total content of Cu and Zn in the composted mixture increased after the composting process. Mn and Zn were mainly found in mobile fractions (exchangeable fraction (F1), carbonate fraction (F2), and Fe/Mn oxide fr...
Nitrogen is usually the most limiting nutrient for crop production. Thus, N fertilizer is widely used by farmers. Moreover, Mn deficiency in some calcareous soils of Iran with high pH has been reported. Therefore, the addition of nitrogen and manganese to achieve the optimum yield is necessary. The objective of this study was to evaluate the effect of N and Mn applications on the availability o...
In the present study, 304 stainless steel (SS) was electrochemically plated with nanocrystalline Mn-Cu alloy coatings from a bath containing ammonium sulfate. The effects of current density on the microstructure, crystallographic structure, and chemical composition of the deposits were studied. The results showed that at low current densities, discontinuous coatings with a large amount of Cu ca...
To study the effects of soil Cu and salinity levels on uptake of micronutrients by shoots and roots of pistachio seedlings, a factorial experiment was carried out as completely randomized design with three replications in greenhouse of College of Agriculture, Vali-e-Asr University of Rafsanjan, Iran, in May 2008. Treatments consisted of five salinity levels (0, 800, 1600, 2400 and 3200 mg NaCl ...
I . The minced carcases of twenty-seven lambs, ranging from 18 to 69 kg in live weight, and twenty-five calves (30-90 kg) were analysed for copper, iron, manganese and zinc. The lambs were weaned whereas the calves were reared exclusively on milk. 2. Mean concentrations of Fe, Mn and Zn for groups of lamb carcases fell within the ranges 52.6-75.1, 0.7-1.2 and 20.8-25.6 mg/kg fresh carcase weigh...
metals concentrations in lumbricus terrestris and soil samples from the dumpsites located in zaria metropolis, nigeria were measured spectrophotometrically. mean metal content in dumpsite soils were: 25.95 - 75.17, 8.33 - 382.94, 124.84 - 206.96, 34.24 - 666.67 and 111.11 - 488.10mg/kg for cd, cu, mn, pb and zn respectively. while the concentration ranges recorded in l. terrestris samples were;...
در ســــالهای اخیر، هیدرومشتقاتی مانند دی هیدروپیریدینهای هانش(dhps) و دی هیدروپیریمیدین-اونها و یا تیونهای بیگینلی(dhpms) جایگاه زیادی در شیمی دارویی به خود اختصاص داده اند که ناشی از فعالیتهای وسیع بیولوژیکی آنها مانند فعالیت ضد میکروبی، ضدفشارخون و مسدودکننده کانالهای کلسیم می باشد. هدف از این کار پژوهشی سنتز سبز و آسان dhps از طریق واکنش تراکمی آلدهید آروماتیک، آمونیوم استات و الکیل استواست...
برای مطالعه اثر کادمیوم(cd) و روی(zn) بر غلظت، مقدار و فاکتور انتقال فسفر(p)، مس((cu، آهن(fe) و منگنز(mn) در گیاه برنج آزمایشی در گلخانه به صورت فاکتوریل در قالب طرح بلوک های کامل تصادفی با دو رقم برنج (هاشمی و واندانا)، دو سطح رطوبت (غرقاب و غیر غرقاب)، سه سطح zn و cd (0، 5 و 10 میلی گرم بر کیلوگرم خاک) و در سه تکرار انجام گرفت. نتایج نشان داد که با تغییر رژیم رطوبتی از غرقاب به غیرغرقاب غلظت ...
levels of the heavy metals copper (cu), zinc (zn), lead (pb), cadmium (cd), chromium (cr), nickel (ni), iron (fe) and manganese (mn) were determined by graphite furnace atomic absorption spectrophotometer (model 67og) in coastal water, sediments and soft tissues of the saccostrea cucullata, from the intertidal zone at five stations in the gulf of chabahar on the iranian coasts along the oman se...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید