نتایج جستجو برای: metal spinning
تعداد نتایج: 207318 فیلتر نتایج به سال:
The 17O resonances of zirconium-oxo clusters that can be found in porous Zr carboxylate metal–organic frameworks (MOFs) have been investigated by magic-angle spinning (MAS) NMR spectroscopy enhanced dynamic nuclear polarization (DNP).
Regarding the importance of ring spinning method among spinning systems, great potentials exist for research about on the improvement of the quality and properties of ring spun yarn. This study aims to improve yarn quality by changing the shape and dimensions of spinning triangle through forming a groove in the middle zone of the front darfting 
roller with a curvature of 5 to 7 mm. For the ...
Background and Aim: Sedentary life style increases risk of cardiovascular diseases (CVDs). Physical activity and green tea supplementation can reduce cardiovascular risk factors by improving inflammation and body composition. The aim of study was to determine benefits of 8 weeks of spinning training and green tea supplementation on risk factors cardiovascular and body composition in overweight ...
The manufacturing of costly hand woven rugs and floor coverings during the 15th to 17th centuries represented a splendid golden age for the Iranian textile industry. Without using high-quality yarns, the productions of such woven materials were surely impossible. To analyze and identify the technical specifications of the required yarns in this industry during the aforementioned centuries, the ...
فرآیند اسپینینگ یک روش تولید بدون براده برداری برای شکل دهی اجسام متقارن و نامتقارن محوری می باشد. این روش یک فرآیند فرم دهی پلاستیک نقطه ای بوده و طی آن یک صفحه تخت و یا یک قطعه کار استوانه ای با حرکت محوری و شعاعی و یا فقط محوری ابزار به شکل مورد نظر فرم داده می شود. اسپینینگ یک روش تولید اقتصادی , موثر و متنوع است. اسپنینگ را می توان به 3 دسته ی عمده تقسیم نمود : شکل دهی برشی , شکل دهی سیلان...
in this article using comparative multi-purpose algorithm of pso, optimum capacity of new resources and their spinning storage is defined. spinning reserve requirements and optimized to maximize profit per unit is determined according to uncertainty. in fact by increasing the level of cost reservation, power supply increases but penalty of blackout decreases. in this paper in has been tried to ...
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