مقالههای Elham kazemi
توجه: محتویات این صفحه به صورت خودکار پردازش شده و مقالههای نویسندگانی با تشابه اسمی، همگی در بخش یکسان نمایش داده میشوند.
اطلاعات انتشار: اولین همایش بین المللی اقتصاد سنجی، روشها و کاربردها، سال ۱۳۹۱
تعداد صفحات: ۱۱
One of the most efficient way improve productivity and economic growth programs were focus more planners and policy makers in different countries And capital investments have a lot more done in this regard. The topic of improving human capital investment expenditures and research and development and infrastructure is Common examples of these measures to improve productivity. Largely a process of economic growth in their prime, Influenced by location – geographically, its powerful internal conditions and the performance of the countries are adjacent. In this study, productivity analysis and geographic Spillover to verify the effect of factors such R&D, human capital, public infrastructure and geographical Spillover in Selected OECD Countries and Iran During the period 3118–3111 is studied using econometric models. The results show that the effect of R & D and human capital and public infrastructure on productivity, total factor productivity, is positive and significant, despite the positive effect of infrastructure on economic growth is meaningless. Also, geographical Spillovers of research and development and public infrastructure on total factor productivity and economic growth is positive and significant. Research findings show that the higher productivity growth in the developing countries should of human capital, increase research and development activities and deepening their cooperation at the strategic need.<\div>
اطلاعات انتشار: Journal of Applied Biotechnology Reports، اول،شماره۳، Summer ۲۰۱۴، سال ۰
تعداد صفحات: ۴
Findings in relation to the inhibitory effects of natural substances against microorganisms showed that herbal products may be alternatives to synthetic and chemical drugs due to their significant therapeutic effects. The pennyroyal (Mentha pulegium) as an important medicinal plant, belongs to the Lamiaceae family is applied in the pharmaceutical and food industries. In recent years, plant tissue culture techniques have appeared as a powerful tool for the micropropagation and breeding of many plant species. The aim of current study was to find the best medium composition for callus induction in M. pulegium. For this purpose, three explants (leaf, root and stem) of M. pulegium were cultured on MS medium supplemented with BAP (0.5 and 1.0 mg\L) and 2,4–D (0.0, 1.0, 2.0 and 4.0 mg\L) in a factorial experiment. The results showed that the leaf explant had the highest effect on callus induction (9.65 mm in callus diameters at 28 days after culture) and hormone levels of 1 mg\L 2,4–D and BAP–free identified as the most efficient concentrations for callus growth rate (0.29 mm\d). Also statistical analysis demonstrated that among interaction effects t he leaf explant in 1 mg\l 2,4–D and BAP–free found as the highest effect for callus induction (12.35 mm in callus diameter at 28 days after culture).
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