نتایج جستجو برای: from which substantially
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بهینه سازی سرعت شارش گاز در لیزرگازکربنیک پیوسته با شارش محوری سریع گاز با استفاده از ژنتیک الگوریتم
To obtain the maximum output power of a fast-axial-flow CW-CO2 laser, gas flow velocity can be optimized by using genetic algorithms. Our theoretical approach shows that the gas flow velocity after optimization increases the laser output power substantially from 500W, obtained in our present system, to 2203W.
abstract: acupuncture is increasingly used in children; however, the safety of pediatric acupuncture has yet to be reported from systematic review. acupuncture has become a dominant complementary and alternative modality in clinical practice today but its associated risk has been questioned. the national institutes of health consensus statement states “one of the advantages of acupuncture is th...
abstract the primary purpose of this study was to explore the actual practices and cognitions of two groups of iranian eap teachers, i.e. language teachers and content teachers, with respect to teaching reading-comprehension and vocabulary. to this end, tehran university of medical sciences which authorizes both groups of teachers to teach eap courses was selected as the context of the study s...
the objective of this study is to provide a partial equilibrium analysis of the effects of tariff and exchange rate policy on the net exports with the particular emphasis on the selected economic sectors. the eight economic sectors in the model are agriculture; food, beverages and tobacco; textiles; wood; chemicals; construction; paper and miselaneous which contains metallic and non merallic pr...
Quantifying future changes in solar photovoltaic (PV) potential is of great significance for energy planning and policy making to achieve carbon neutrality. To constrain the uncertainties applying directly Coupled Model Intercomparison Project Phase 6 (CMIP6) projections such quantification, we construct performance-weighted CMIP6 irradiance air temperature data, then assess China's PV accompan...
Plants use light as source of energy and information to detect diurnal rhythms and seasonal changes. Sensing changing light conditions is critical to adjust plant metabolism and to initiate developmental transitions. Here we analyzed transcriptome-wide alterations in gene expression and alternative splicing (AS) of etiolated seedlings undergoing photomorphogenesis upon exposure to blue, red, or...
Phosphorothioate substitution-interference experiments, routinely used to stereospecifically identify phosphoryl oxygen sites that participate in RNA-ligand binding and RNA-directed catalysis, rest in their interpretation on the untested assumption that substitution does not alter the conformation of the modified molecule from its biologically active state. Using NMR spectroscopy, we have teste...
Semiconductor manufacturing continues to charge down Moore’s Law of scaling. But every shrink increases the burden on lithography imaging. Traditional paths include increasing NA and reducing the illumination wavelength. However, the latest systems have maxed out NA for water-based immersion and wavelength developments are awaiting EUV systems, which are a few years away from volume production ...
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