نتایج جستجو برای: روش si
تعداد نتایج: 443949 فیلتر نتایج به سال:
conclusion using standard imaging parameters, each mri sequence reaches its maximum si in a specific contrast concentration, which is highest in se and least in ir in a comparison between se, fse and ir sequences. results this study shows that maximum si will appear at different ranges in different sequences. the maximum si can be seen at concentrations of 5.95, 4.96 and 3.98mmol/l for se, fse ...
Silicon (Si) nutrition may alleviate biotic and abiotic stresses including heavy metal deficiency and toxicity in plants. Iron deficiency and toxicity are important limiting factors in growth of rice. In the present study, role of Si nutrition on alleviation of iron deficiency and toxicity was investigated in rice plants. Plants were cultivated in greenhouse in hydroponics, using Yoshida soluti...
teachers can influence the complex process of learning in education, in general, and in second/foreign language (l2) learning in particular. in this light, understanding the factors influencing teachers’ pedagogical success can help l2 teachers achieve more effective teaching. this study then investigated the role of spiritual intelligence (si) in l2 teachers’ pedagogical success. in so doing, ...
the sunflower caterpillar chlosyne lacinia saundersii (lepidoptera: nymphalidae) is considered a major pest in sunflower, causing severe defoliation and, thus, threatening production of oilseed. chemical control remains the most widely used method for the management of this defoliator. to manage insect pests, there is a need to use substances of low toxicity that are able to stimulate the plant...
soil quality is a necessary indicator of land management. different indices are applied to evaluate farming systems, soil types and land uses based on soil quality. the slope of retention curve at its inflection point has been defined as soil physical quality index (si) but the relationships between si and penetration resistance (pr), the least limiting water range (llwr), and available water c...
to study the effect of sowing date and a single irrigation (si) on yield and yield components of barley, a field experiment was conducted in dryland agricultural research institute (maragheh, iran) in 2004-06 cropping seasons, using a split plot based on a randomized complete block design with 3 replications. main plots were assigned to 3 levels of sowing date (early, normal and late). sub-plot...
Silicon is known to ameliorate the deleterious effects of drought on plant growth. We evaluated growth of wheat (Triticum aestivum L. CV. Chamran) under Water-Deficit Stress Induced by Polyethylene Glycol as affected by Si application. In this article, the effects of Si (as potassium silicate) on some parameters related to growth, chlorophyll concentration relative water content (RWC), electrol...
Silicon is not an essential element for plant and commonly recognized as "quasi-essential" elements, however its beneficial effect on the plants growth has been well known. In present study the effects of 0, 0.2, 1, 2, 4 and 6 mM of Si on the 5-weeks old maize plant under hydroponic condition were investigated and the data was analyzed by heatmaps. The results showed that the application of Si ...
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