نتایج جستجو برای: number of root
تعداد نتایج: 21188324 فیلتر نتایج به سال:
abstract: in the paper of black and scholes (1973) a closed form solution for the price of a european option is derived . as extension to the black and scholes model with constant volatility, option pricing model with time varying volatility have been suggested within the frame work of generalized autoregressive conditional heteroskedasticity (garch) . these processes can explain a number of em...
In a previous article [7], the author proves that value of root number varies in non-isotrivial family elliptic curves indexed by one parameter t running through $${\mathbb {Q}}$$ . However, well-known example Washington has $$-1$$ for every fiber when runs {Z}}$$ Such examples are rare since, as proven this paper, integer fibers large class families curves. This result depends on squarefree co...
In order to study the effects of water deficit and foliar application of salicylic acid and spermine on dry matter production and biochemical and morphological treats of Echinacea purpurea, a split plot experiment was conducted based on randomized complete block design with three replicated during 2016- 2017 growing seasons at research field of Institute of Forests and Rangelands, Iran. In this...
Introduction: The aim of this study was to compare the effect of powdered and fresh ginger root on nausea and vomiting during pregnancy. Methods: In this clinical trial study 100 pregnant women below 17 weeks gestational age , age 18-35 years , who had nausea and vomiting in 24 hours were randomly placed in two groups of 50 . The first group took 250 mg ginger powder and second group took fresh...
gerbera jamesoniiis of commercial significance and fifth most used cut flower in the world today. a pot experiment was performed to see the effect of co-inoculation of arbuscular mycorrhizal fungi (amf) i.e. (glomus mosseae andacaulospora laevis) with phosphate solubilizing bacteria pseudomonas fluorescensin the presence of different doses of superphosphate (low, medium, high) on growth establi...
In order to investigate the effect of putrescine and auxin (IBA) on rooting of semi-hardwood cuttings of the GN15 hybrid rootstocks, an experiment was conducted at the Flower Biology Laboratory of Faculty of Agriculture, Tabriz University in 1994. Cuttings were obtained from Sahand Gardening Research Station. This experiment was conducted in a completely randomized design with four replications...
introduction: the present study was conducted to analyze the knowledge of general dentists of kermanshah about root canal therapy in 2012. methods: in this descriptive cross-sectional study, a two-part questionnaire was designed and given to 93 general dentists in kermanshah to complete. the first part of the questionnaire comprised of personal and professional information of the participant de...
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