نتایج جستجو برای: o p t i m a l s o l u t i o n s t h a t m a i n t a i n a p r o b a b i l i t y o f c o n s t r a i n t s a t i s f a c t i o n t h e n

تعداد نتایج: 15602024  

Journal: :به زراعی کشاورزی 0
صدیقه بهرامی دانشجوی کارشناسی ارشد گروه علوم باغبانی، دانشکدة کشاورزی، دانشگاه زنجان، زنجان، ایران علی سلیمانی استادیار گروه علوم باغبانی، دانشکدة کشاورزی، دانشگاه زنجان، زنجان، ایران فریبرز حبیبی کارشناس ارشد گروه علوم باغبانی، دانشکدة کشاورزی، دانشگاه زنجان، زنجان، ایران

effect of foliar spraying by humic acid on mineral leaf composition, yield and fruit quality of apple (malus domestica l. cv. ‘granny smith’) was studied. an experiment based on randomized complete design was conducted in khorramdare city of zanjan province. spraying of humic acid was conducted in four levels 0, 5, 10 and 15 mg/l on eight year-old ‘granny smith’ apples grafted on mm106 rootstoc...

Journal: :تحقیقات اقتصادی 0
حسین مرزبان عضو هیأت علمی بخش اقتصاد دانشگاه شیراز مهدی نجاتی دانشجوی دکتری اقتصاد دانشگاه شیراز

in recent decades, foreign direct investment (fdi) has played a vital role in economic growth of developed and developing countries. fdi brings new capital and technology to the host country beside a possibility of spillover to local firms. hence, fdi is considered as an important channel of technology transfer. however, in empirical studies, the size and direction of effects of fdi on producti...

Journal: :علوم گیاهان زراعی ایران 0
فرخ لقا رازقی یدک رضا توکل افشاری

drought resistance is a very important characteristic needed for plant survival especially at germination stage, in arid and semi-arid lands. phosphatase enzymes are widely found in plants. these enzymes are responsible for dephosphorylation of organic phosphate and altering it to mineral phosphate. germination experiments were conducted in two bread wheat cultivars (sardari and alvand) under s...

Journal: :زن در توسعه و سیاست 0
عبدالحسین کلانتری استادیار جامعه شناسی دانشگاه تهران پیام روشن فکر کارشناس ارشد رفاه و برنامه ریزی اجتماعی دانشگاه علامه طباطبایی(ره) جلوه جواهری کارشناس ارشد مطالعات زنان دانشگاه الزهرا(س)

consequences of divorce, specially the negative ones, affect different sectors of society generally and become specifically important in gender development analysis and social policy, because of their especial influence on women’s lives. this article reviews the previous studies and published literature on after-effects of divorce in iran in a period between 1997 and 2011. based on an initial s...

Journal: :محیط زیست طبیعی 0
زهرا یعقوب زاده مربی پژوهشی بخش بیوتکنولوژی آزمایشگاه میکروبیولوژی ـ پژوهشکدۀ اکولوژی رضا صفری مربی پژوهشی بخش بیوتکنولوژی آزمایشگاه میکروبیولوژی ـ پژوهشکدۀ اکولوژی

organochlorine pesticides are as environmental pollutants which have a high half-life and transmit from food chain to human and cause side effects such as mutations in different genes and finally cancer. in this research, after sampling and quantitative and qualitative of organochlorine residue, biodegradation of alpha, beta and gamma hexachlorobenzene (linden), ddt, aldrin, dieldrin, endosulfa...

Journal: :علوم دامی ایران 0
ابراهیم نوریان سرور دانشجوی دکتر تربیت مدرس یوسف روزبهان دانشیار تربیت مدرس

in this trial, the effect of different levels of echum amoneum (ea) (0.3, 30, 300 or 3000 µl) on in vitro ruminal fermentation characteristics and methane production was assessed. the parameters studied were in vitro gas production (ivgp), methane production, ammonia (nh3-n) concentration, in vitro organic matter degradability (ivomde), partitioning factor (pf) (the ratio of substrate truly deg...

Journal: :فصلنامه علمی اکوفیزیولوژی گیاهان زراعی 0

to evaluate the anti-transpiration effect on yield and yield components of corn late yield 704 under drought stress experiment split factorial randomized complete block design with three replications in spring 2012 at the research station, kermanshah. and paclobutrazol treatments include salicylic acid, which is taking on two levels. based on the values determined in the following order foliar ...

Journal: :محیط شناسی 0
نادر سلمانی خاص عضو هیئت علمی ، پردیس فنی مهندسی شهید عباسپور دانشگاه شهید بهشتی مصطفی تیزقدم عضو هیئت علمی پردیس فنی مهندسی شهید عباسپور دانشگاه شهید بهشتی عبدااله رشیدی مهرآبادی عضو هیئت علمی پردیس فنی مهندسی شهید عباسپور دانشگاه شهید بهشتی

introduction saline wastewaters contain mineral salts which are often produced by industries such as seafood processing, cannery, vegetables, and tanning. they are imported into the sewage collection network. in coastal cities, saline water consumption seems indifferent in household parts and highlevels ofground water, leaksaltwater, precipitation duringdifferentseasons,and sea level are the ot...

Journal: :iranian journal of cancer prevention 0
mostafa rezaei-tavirani elham dolat hadi hasanzadeh samaneh-sadat seyyedi vahid semnani sara sobhi

abstract background: radiosensitizer drugs are used to enhance the efficiency of radiotherapy. some nanoparticles can be considered as radiosensitizers, because they enhance cytotoxicity due to oxidative stress and increase free radical yield, especially ros , within cells resulting to cell death. methods: in this study, synergistic effect of tio 2 nanoparticles was evaluated in presence of 60 ...

Journal: :آمایش سرزمین 0
ناصر احمدی ثانی استادیار، دانشکده کشاورزی و منابع طبیعی دانشگاه آزاد اسلامی واحد مهاباد ساسان بابایی کفاکی استادیار دانشکده کشاورزی و منابع طبیعی دانشگاه آزاد اسلامی واحد علوم و تحقیقات تهران اسدالله متاجی دانشیار، دانشکده کشاورزی و منابع طبیعی دانشگاه آزاد اسلامی واحد علوم و تحقیقات تهران

zagros forests are a treasure of various valuable species of oak in iran and the world. long-term misuse in the past has caused severe degradation in the zagros forests. recently these forests have become national but misuses by local people to make living because of poverty and unemployment are continued. in order to reduce degradation and improve sustainability, ecological capability for exte...

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