نتایج جستجو برای: current direction
تعداد نتایج: 913222 فیلتر نتایج به سال:
abstracta number of economists argue that the capital expenditure has a positive impact and the current expenditure has negative impact on output while others believe that the government expenditure, regardless of being current or capital spending, has a negative impact on the economy. in this direction, this paper tries to investigate the impact of current and capital government expenditure on...
Employing direct and alternative electric currents at the time of casting and solidification modified grains of Al and Si. The highest wear resistance was obtained in the direct current, and for alternative current the wear resistance corresponded to the electric current. The change of polarity in the pure Al did not influence the wear resistance, but for the Al-Si alloy the highest wear resist...
the methods which are used to analyze microstrip antennas, are divited into three categories: empirical methods, semi-empirical methods and full-wave analysis. empirical and semi-empirical methods are generally based on some fundamental simplifying assumptions about quality of surface current distribution and substrate thickness. thses simplificatioms cause low accuracy in field evaluation. ful...
A Preliminary Approach to Patient Access Scheme in Malaysia: Current Experience and Future Direction
A biomimetic aluminum oxide membrane having asymmetric channels with a minimum diameter of 20 nm, maximum 80 and length 5 µm was prepared using square pulse anodization. The effectively permitted transfer anions only showed an ionic current rectification characteristic ratio 2.4. After the sulfonic acid group introduced by surface modification, cations 2.7. This modulation direction consistent ...
In the next-generation of turbine engines, improving heat resistance and reducing weight are essential solutions to increasing thermal efficiency fuel consumption CO2 emissions. Silicon-based ceramics (e.g., SiCf/SiC matrix composites (CMCs) monolithic Si3N4) leading candidates for these applications because their extreme light superior compared current Ni-based alloys. The main challenge Si-ba...
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