نتایج جستجو برای: AI
تعداد نتایج: 39796 فیلتر نتایج به سال:
The objective of this study was to investigate effect of different time of GnRH administration and CIDR insert after artificial insemination (AI) on fetus Loss, AI interval and conception rate in Holstein dairy cows. Multiparous high-yield dairy cows (> 30 Kg/d, n= 550) were randomly assigned into five groups. Groups were: 1- GnRH injection on day 5 after AI, 2- GnRH injection on day 11 after A...
آزمایش مزرعهای با هدف تأثیر تلفیق روشهای کنترل مکانیکی با علفکشها بر عملکرد و اجزاء عملکرد سویا در سال زراعی 83-1382 در قالب طرح بلوکهای کامل تصادفی با 18 تیمار و سه تکرار در مزرعهی پژوهشی دانشکده کشاورزی دانشگاه تهران (کرج) اجرا شد. تیمارها شامل گروههای: 1- کاربرد مجزای علفکشهای تریفلورالین (g ai/ha960)، آلاکلر (g ai/ha2400)، بنتازون (g ai/ha1200) و اکسیفلورفن (g ai/ha360) بترتیب به ...
در این پایان نامه ابتدا به بررسی حوزه های تجزیه یکتا و حوزه های تجزیه می پردازیم. حوزه تجزیه r را حوزه نیم تجزیه (hfd) گوییم، اگر برای هر عنصر غیرصفر غیریکه داشته باشیم a1a2…an=b1b2…bm، به طوری که ai ها و bj ها در r تحویل ناپذیر باشند، آن گاه n=m. سپس ویژگی های حوزه های نیم تجزیه را مورد بررسی قرار می دهیم. هم چنین حوزه تجزیه r را ohfd می نامیم، اگر a1a2…an=b1b2…bn ، که در آن ai ها و bj ها در r...
to study the effects of integration of mechanical control with herbicides on yield and yield components of soybean (glycine max) a field experiment was conducted during 2003-2004 at the research farm of agronomy department, agriculture campus of tehran university, karaj. a randomized complete block design (rcbd) of 18 treatments was applied, each treatment being replicated 3 times. treatments i...
Background and Aims: Hemagglutinin (HA) protein of Avian Influenza (AI) plays an essential role in the virus pathogenicity. AI H9N2 subtype causes significant economic loss in broiler and layer in poultry farms in Iran. AI viruses have a great involvement in evolutionary changes at nucleotide and amino acid levels and vaccines could induce faster rates of such changes. Up-dated understanding of...
Abstract Subject area classification is an important first phase in the entire process involved bibliometrics. In this paper, we explore possibility of using automated algorithms for classifying scientific papers related to Artificial Intelligence at document level. The current semimanual and journal based, a realization that, argue, opens up potential inaccuracies. To counter this, our propose...
background and aims: avian influenza (ai) h9n2 subtype was first reported to infect turkeys in the united states in 1966 and has been panzootic in europe and asia. the impact of avian influenza caused by h9n2 viruses in iran is now significantly more severe than in previous years. methods: sequence analysis and phylogenetic study of the complete coding region polymerase a (pa) gene of h9n2 subt...
The objective of this study was to consider effect of three different time of starting Ovsynch after Artificial Insemination, on synchrony parameters, pregnancy loss and fertility in Holstein cows. Multiparous cows (> 30 Kg/d, n = 450) randomly assigned to one of three groups. Groups according to time of starting Ovysnch were as follows: 1- Starting Ovsynch on day 25 after AI, 2- Starting Ovsyn...
this study was conducted in 2008 at the research field of university of tehran, karaj. the experiment was designed as a randomized complete block design with three replications. treatments were: atrazine 1kg/ha, alachlor 4kg/ha, atrazine+alachlor (1+4) kg/ha, nicosulfuron 80 g ai/ha, furamsulfuron 45g ai/ha, rimsulfuron 25g ai/ha, nicosulfuron+furamsulfuron (80+45) g ai/ha, nicosulfuron+rimsulf...
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