منابع مشابه
influential factors of customer e-loyalty in iranian e-stores
گسترش سریع تکنولوژی و اینترنت مسیر شرکت ها را به نگهداری وفاداری مشتریان الکترونیکی معطوف کرده است. وفاداری مشتریان یک حوزه بسیار جالب برای شرکت ها می باشد و وفاداری مشتریان تاثیر مستقیم بر درآمد و سودزایی شرکتها دارد. با توجه به اهمیت وفاداری مشتری، ما به جستجوی سه مشکل اصلی تحقیق پرداختیم که آن ها مهمترین موانع برای حفظ حیات کسب و کارهای اینترنتی هستند که عبارت از تعویض های متعدد مشتری، هزینه...
15 صفحه اولAnti-icing superhydrophobic coatings.
We use nanoparticle-polymer composites to demonstrate the anti-icing capability of superhydrophobic surfaces and report direct experimental evidence that such surfaces are able to prevent ice formation upon impact of supercooled water both in laboratory conditions and in natural environments. We find that the anti-icing capability of these composites depends not only on their superhydrophobicit...
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Various classic icing codes have been developed and used by the aircraft manufacturers to predict the ice shapes evolution. These codes apply boundary layer integral analysis, based on sand grain roughness, to estimate the convective heat transfer coefficient around the iced airfoil and adopt abrupt transition between laminar and turbulent flow. In the present work, the integral analysis is als...
متن کاملSupercooled large droplets in icing conditions
In March 1997 NLR investigated the icing atmosphere for aircraft by flying with an instrumented research aircraft through clouds. Liquid water content, droplet diameter distributions and air temperature were measured. Large droplets were found in air masses with a limited extent. Results from the measurement campaign are presented and compared with limits in aircraft and helicopter certificatio...
متن کاملTorque and Axial Loading Physics for Measuring Atmospheric Icing Load and Icing Rate
Measuring icing load and icing rate are important parameters for an atmospheric icing sensor. A new icing sensor has recently been designed and developed at Narvik University College for measuring atmospheric icing rate, icing load and icing type. Unlike the existing atmospheric icing sensors commercially available in market, which uses the axial loading for measuring icing load and icing rate,...
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ژورنال
عنوان ژورنال: Journal of Glaciology
سال: 1951
ISSN: 0022-1430,1727-5652
DOI: 10.3189/s0022143000026186