طريقة جديده لتحسين كفاءة توربينات الرياح يبتكرها عالم مصرى

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نشر الدكتور محمد حسن مع زملاء له من جامعة عين شمس المصرية فكرة مبتكرة لتحسين كفاءة توربينات الرياح الصغيرة، المعروفة باسم «سافونيس»، وذلك بعمل تصميم جديد ومبتكر لثلاثة من الأعضاء الدوارة من توربين سافونيس، وأشارت النتائج إلى أن أداء التصميم الجديد لديه معامل طاقة أعلى مقارنة مع تصميم دوار واحد لنفس الأبعاد. وقد وجد أن معامل تحويل الطاقة الأقصى، والتى تعبر عن كفاءة التوربينات الثلاثة الدوارة،

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سياره سيتروين موديل 1921

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صور سياره سيتروين موديل 1921  سيتروين نوع C" وكان يطلق عليها فى زاك الوقت سيارة الشعب وأُنتجت عام 1921

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We've updated our Privacy Policy

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We're writing to let you know that we've made some changes to our Privacy Policy, and that we've added a Cookie Statement to our legal policies. In addition to a number of revisions to make our Policy clearer and more readable, here is an overview of some of the changes:
  • We added provisions in order to comply with the new EU-US Privacy Shield Framework and to make the ways we are complying more obvious. (Numerous sections, but in particular, Section 16)
  • We made general revisions for clarity around the information we collect, including clarifying the difference between information you voluntarily provide to us and information we collect automatically. (Section 5)
  • We made general revisions for clarity around how we do and do not use the information that we collect from you. (Sections 6, 9, 12)
  • We added a California Privacy Statement. (Section 18)
  • Finally, we added a Cookie Statement that explains in more detail how we use cookies and similar technologies.
We encourage you to read the entire Privacy Policy and Cookie Statement, as these documents explain what kind of information we collect and how we use the information you give us.

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iPhone 7 launch | iPhone Spec

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Apple iPhone 7 series has launched today 08.09.2016. The Apple event for the new iPhone 7 and iPhone 7 Plus started at 10.30 pm IST, and users can watch the live-stream on the Apple.com website. Any iOS or MacOS users or anyone just watch the stream on the Safari browser on an Apple device. For More Details Visit: http://ift.tt/2bYWxSn

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Recommended for you: Forward emails to trigger@recipe.ifttt.com to save an #attachment in Dropbox

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Notes: Back up any attachment in your email account to the cloud.

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Notes: Use in tandem with this: https://ifttt.com/recipes/164966

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Notes: All videos added to your 'Watch Later' playlist on YouTube will be saved in Pocket for later viewing.

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