نتایج جستجو برای: silicon substitution

تعداد نتایج: 137468  

Journal: :علوم باغبانی ایران 0
صابر اوستان دانشجوی سابق کارشناسی ارشد، علوم باغبانی، دانشکدۀ کشاورزی، دانشگاه ارومیه لطفعلی ناصری دانشیار علوم باغبانی، دانشکدۀ کشاورزی، دانشگاه ارومیه

silicon has useful effects on growth and yield of many plants. the aim of the present study is to investigate the impact of nano silicon oxide on proliferation and improvement of some growth traits of apple, cultivar gala. thus, an experiment was designed based on completely randomized design (crd) with five levels of nano silicon oxide concentrations (0, 25, 50, 100 & 200 ppm) in five replicat...

A.Nouri, H. Saghafian, Sh.Kheirandish,

Abstract: In the current work, the strain hardening behavior of dual-phase steels with different silicon content (0.34- 2.26 Wt. %) was examined using the modified Crussard-Jaoul analysis. It was shown that these dual-phase steels deform in two stages over a uniform strain range. Each stage exhibited a different strain hardening exponent varying with silicon content. At the first stage, work...

Journal: :Biomaterials 2007
Anastasios Antonakos Efthymios Liarokapis Theodora Leventouri

B-type synthetic carbonate hydroxyapatite (CHAp), natural carbonate fluorapatite (CFAp) and silicon-substituted hydroxyapatite (SiHAp) have been studied by using micro-Raman and infrared (IR) spectroscopy. It was found that while B-type carbonate substitution predominates in carbonate apatites (CAps), A-type is also detected. B-type carbonate substitution causes a broadening of the v(1) P-O str...

Behzad Edrisi, Mesbah Babalar, Roohangiz Naderi

Stem and peduncle bending by the weight of the flower is one of the main postharvest problems in gerbera (Gerbera jamesonii Bolus.) and sometimes caused stem crushing or water loss. In this research, silicon and salicylic acid were applied to enhance the mechanical strength of inflorescence stem, and the results revealed that stem curving was decreased by silicon and salicylic acid treatments. ...

Journal: :iranian journal of science and technology (sciences) 2011
s. mohsenzadeh

the impacts of salicylic acid and silicon on some physiological parameters of maize seedlings in the presence ofcadmium (100 μm) were investigated. inhibitory effects of cadmium on seedling growth resulted in reduced shoot and root fresh weight, low percentage of relative water content, low chlorophyll, free proline and soluble sugars contents and a low rate of lipid peroxidation. results indic...

Journal: :journal of computational & applied research in mechanical engineering (jcarme) 2012
aminreza noghrehabadi mohammad ghalambaz mehdi ghalambaz afshin ghanbarzadeh

in the present paper, the flow and heat transfer of two types of nanofluids, namely, silver-water and silicon dioxide-water, were theoretically analyzed over an isothermal continues stretching sheet. to this purpose, the governing partial differential equations were converted to a set of nonlinear differential equations using similarity transforms and were then analytically solved. it was found...

This paper shows that the reflectance in silicon nanowires (SiNWs) can be optimized as a function of the area of silicon substrate where the nanostructure growth. SiNWs were fabricated over four different areas of silicon substrates to study the size effects using electroless etching technique. Three different etching solution concentrations of silver nitrate (AgNO3) and hydroflu...

S. Ketabi S. M. Hashemianzadeh

This study is about Complexes of Li doped silicon carbide nanotube with Thymine and Cytosine ingas phase and aqueous solutions. Li doped silicon carbide nanotube and its pyrimidine nucleobasecompounds were first modeled by Quantum mechanical calculations in gas phase and in water.Calculated binding energies indicated the stronger ability of thymine to functionalize silicon carbidenanotube than ...

Journal: :journal of chemical health risks 0
manizheh kalteh department of soil science, damghan branch, islamic azad university, damghan, iran zarrin taj alipour department of soil science, damghan branch, islamic azad university, damghan, iran shahram ashraf department of soil science, damghan branch, islamic azad university, damghan, iran maryam marashi aliabadi department of soil science, science and research branch, islamic azad university, tehran, iran alireza falah nosratabadi department of soil biology, soil and water research institute, tehran, iran

application of nanofertilizers is one of the promising methods for increasing resources use efficiency and reducing environmental pollutions. uncontrolled application of chemical fertilizer and pesticides has caused many problems to human health and domestic animals. nanofertilizers application could be a suitable way to reduce these problems. accordingly, in order to assess the silicon nanopar...

Silicon is the second most abundant element in  soil. It is generally considered a beneficial element for the growth of higher plants, especially those grown under stressed environments. Cadmium is a toxic and nonessential element for plant growth and development. The aim of this study was to investigate the effect of silicon on cadmium stress improvement in tomato. Therefore, the interact...

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