نتایج جستجو برای: three levels of zinc

تعداد نتایج: 21250784  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور استان تهران - دانشکده زبانهای خارجی 1393

the purpose of this study was to examine the english language needs of medical students at tehran university of medical sciences . analysis of the needs took place for three groups: 320 undergraduate students, 30 postgraduate students and 20 university instructors. a triangulation approach to collect data was used in which a combination of the quantitative (using the questionnaires) and qualita...

Amiri, Seyed Reza , Salimi, Khaled , Ziaei, Seyed Masoud ,

Saravan is one of the arid regions of the country, so cultivating plants compatible with these areas can be effective in improving the province's agriculture. One of the most recently considered plants in the country is quinoa, which is resistant to adverse environmental conditions. Therefore, the present experiment was conducted with the aim of investigating the different levels of irrigation ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تحصیلات تکمیلی علوم پایه زنجان - دانشکده شیمی 1391

in this thesis a calibration transfer method is used to achieve bilinearity for augmented first order kinetic data. first, the proposed method is investigated using simulated data and next the concept is applied to experimental data. the experimental data consists of spectroscopic monitoring of the first order degradation reaction of carbaryl. this component is used for control of pests in frui...

Journal: :مدیریت خاک و تولید پایدار 0
بابک متشرع زاده دانشگاه تهران غلامرضا ثواقبی فیروزآبادی عضو هیات علمی گروه مهندسی علوم خاک دانشگاه تهران منصوره کریمی دانش اموخته

this research was conducted on polluted soil near the lead and zinc factory in zanjan province through which the effects of two organic and three mineral sources were examined on heavy metals fixation in randomized experiment design. experimental treatments includes bagasse and rice husk in three levels: 1.25, 2.5 and 5%, zeolite in three levels: 5%, 10% and 15%, phosphate rock in three rates: ...

حق نیا, غلامحسین , خراسانی, رضا , قشلاقی, زهرا , کافی, محمد ,

Leafy vegetables play a crucial role in human dietary. Excessive application of nitrogen fertilizer leads to accumulation of high levels of nitrate in the tissues and causes further consequence. In order to evaluate the impact of zinc and harvest times on the reduction of nitrate accumulation and nitrate reductase activity, an experiment was conducted as completely randomized design with factor...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تبریز 1390

learning a second or foreign language requires the manipulation of four main skills, namely, listening, reading, speaking, and writing which lead to effective communication. it is obvious that vocabulary is an indispensible part of any communication, so without a vocabulary, no meaningful communication can take place and meaningful communication relies heavily on vocabulary. one fundamental fac...

ژورنال: پوست و زیبایی 2012
احسانی, امیرهوشنگ, حسینی, محبوبه‌سادات, حنیف‌نیا, امیررضا,

Background and Aim: Alopecia areata is a non-scarring hair disorder. Trace elements imbalance (like zinc) has been reported as its triggering factor. In this study we compared serum zinc level in alopecia areata patients with normal values.Methods: Twenty-three female and 19 male patients with alopecia areata were recruited and their serum zinc levels were assessed using absorption spectrometer...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تبریز 1381

deposite the different criticisms on contrastive analysis it has been proved that the results of it(when processed)can be usuful in a tefl environment,specially at the level of phonology.this study is an attempt to compare and contrast the sound systems of kurdish and english for pedagogical aims. the consonants,vowels,stress and intonation of the twolanguages are described by the same model-ta...

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد تهران مرکزی - دانشکده زبانهای خارجی 1392

the extent to which written corrective feedback on linguistic errors can play a role in helping l2 writers improve the accuracy of their writing continues to be an issue of interest to researchers and teachers since truscott (1996) mounted a case for its abolition. while there is growing empirical evidence that written corrective feedback can successfully target some types of linguistic error (...

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  This study was carried out to investigate the effect of Humic acid and micronutrient nano fertilizers on rainfed chickpea response under field conditions located in Kamyaran-Kurdistan during 2015-2016 year. The experiment was split plots in a randomized complete block design with three replications. The main factor was foliar application of Humic acid in three levels including (control, four ...

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