نتایج جستجو برای: and the factors affecting basic metals manufacturing during 1373

تعداد نتایج: 21354448  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز - دانشکده علوم پایه 1392

a novel and ultra low cost isfet electrode and measurement system was designed for isfet application and detection of hydronium, hydrazinium and potassium ions. also, a measuring setup containing appropriate circuits, suitable analyzer (advantech board), de noise reduction elements, cooling system and pc was used for controlling the isfet electrode and various characteristic measurements. the t...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور استان تهران - دانشکده زیست شناسی 1388

abstract chickpea is weak in competition of weeds that damages to it at between 40 t0 60 percent. kermanshah province is one of the most important region for chickpea fields in iran. for these reosons, weed management is necessary in this crop. in order to evaluate of herbicides and stubble control on broad leave weeds control in chickpea. experiment was conducted in agricultural research stat...

Journal: :Journal of Economics, Business, & Accountancy Ventura 2020

ژورنال: سلامت کار ایران 2016

Background and aims: The Organizational factors affecting safety performance while impact on the overall performance of their organizations, also have a causal relations with each other, so the intensity or weakness of a factor in the organization can be effective on the other factors that enhance or weakness of the factor. Accordingly, the aim of the current study is assess causal relations be...

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

during 2010-2011 a faunistic survey was carried out for collection and identification of edaphic mesostigmatic mites (acari: mesostigmata) in jiroft and suburb. mites were extracted from soil samples by berlese funnel. the mites were cleared in nesbit fluid and were mounted in hoyer medium on microscopic slides. in this study 43 spices from 26 genera and 16 families were collected and identifie...

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: :تحقیقات اقتصادی 0
محمدعلی فیض پور دانشگاه یزد حسین حاجی خدازاده دانشگاه یزد

in the economic literature, firm entry and exit are considered as two basic concepts and the time interval between them, known as life duration, is almost a neglected subject in iranian economy. accordingly, this study tries to investigate the life duration of new firms in food and beverage industry as one of the most manufacturing industries in iran during 1996-2005. factors affecting the life...

Greenhouse gas (GHG) emission due to the fossil fuels combustion in the world's manufacturing industries with a share of 30% of emission is considered as one of the important potentials for GHG emission reduction. In this study, using the logarithmic mean of Division index (LMDI) method, in combination with Kaya model, the factors affecting the emissions of Iranian manufacturing industries, inc...

Journal: :international journal of environmental research 0
m. rastegari iran university of science and technology, tehran, iran m. saeedi iran university of science and technology, tehran, iran a. mollahosseini iran university of science and technology, tehran, iran m. ayatinia iran university of science and technology, tehran, iran

several factors effect on sorption of polycyclic aromatic hydrocarbons (pahs) in soil. co-existence of metals and organic matter of soil are among important affecting factors on sorptive behavior of pahs. this research investigated the effect of organic matter content and heavy metals (lead, nickel and zinc), on sorption of phenanthrene onto kaolinite. for this purpose, sorption of the organic ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علوم کشاورزی و منابع طبیعی گرگان - دانشکده جنگلداری و مهندسی چوب و کاغذ 1391

درک الگوی توزیع مکانی ماکروفون خاک بدلیل اثرات آن روی فرآیندهای اکوسیستم بسیار مهم است. لیکن اطلاعات کمی در این خصوص وجود دارد. درمورد تنوع زیستی ارگانیسم ها وجانداران خاکزی که ازاجزای مهم وکلیدی درهرسیستم اکولوژیکی هستند و در بهبود حاصلخیزی خاک و تولیدات زمین وپایداری اکوسیستم ها(ازطریق فرآیندهای بیولوژیک)نقش عمده دارند تحقیقات کمی انجام شده است. این تحقیق جهت بررسی الگوی مکانی پارامترهای تنوع...

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