نتایج جستجو برای: preforming
تعداد نتایج: 146 فیلتر نتایج به سال:
The formation of a protein corona around nanoparticles can influence their toxicity, triggering cellular responses that may be totally different from those elicited by pristine nanoparticles. The main objective of this study was to investigate whether the species origin of the serum proteins forming the corona influences the in vitro toxicity assessment of silica nanoparticles. Coronas were pre...
Latent Markov (LM) models are increasingly used in a wide range of research areas including psychological, sociological, educational, and medical sciences. Methods to perform power computations are lacking, however. Power computations can help 1) to make an informed decision on the sample size or the number of measurement occasions required to achieve a prespecified power level of a statistical...
For mass production of structural composites, use of different textile patterns, custom preforming, room temperature cure high performance polymers and simplistic manufacturing approaches are desired. Woven fabrics are widely used for infusion processes owing to their high permeability but their localised mechanical performance is affected due to inherent associated crimps. The current investig...
The avoidance of scrap and the adherence to tolerances is an important goal in manufacturing. This requires a good engineering understanding underlying process. To achieve this, real physical experiments can be conducted. However, they are expensive time resources, slow down production. A promising way overcome these drawbacks process exploration through simulation, where finite element method ...
چکیده ندارد.
در سالهای اخیر بطور گسترده تکنیکهای مختلف مهندسی بکمک کامپیوتر برای تحقیق و طراحی پروسه در شکل دهی فلزات بکاربرده شده است و در بین آنها استفاده از روش آنالیز المان محدود در پیش بینی سیلان فلز، تنشهای قالب، نیروی شکل دهی و توزیعهای تنش و کرنش در قطعه موفقیت آمیز بوده است. مهمترین مرحله طراحی پروسه در فرآیند فورجینگ قالب بسته، طراحی قالبها و تعیین تعداد مراحل شکل دهی می باشد در روشهای سنتی این مر...
Abstract. In 2008, excavations at Herodium revealed magnificent secco wall paintings and stucco decorations adorning the central chamber top of royal theatre. The paintings, dated to first century B.C.E., have been preserved up a height 6 meters. However, shortly after discovery, salts weathering structural faults caused severe damages decorations. conservation process restore lasted almost dec...
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