Buckminsterfullerene, C60 , is the largest molecule observed to date in interstellar and circumstellar environments. The mechanism of formation this actively debated. Despite targeted searches primitive carbonaceous chondrites, no unambiguous detection a meteorite has been reported date. Here we report first firm fullerenes, from C30 at least C100 Almahata Sitta (AhS) polymict ureilite meteorit...

Denna bok lyfter frågan om hur vilka planer som finns i Ryssland för tiden efter Putin president. Huvudargumentet är att de strategier bygga politisk legitimitet nästan helt har fokuserats på Rysslands räddare och beskyddare. Därmed också möjliga efterträdare svårt upp en egen plattform. Den nya konstitutionen möjliggör sitta kvar fram till 2036 visar man inte någon lösning detta dilemma. Kvar ...

در میان شبکۀ معابر شهری، راه‌های اضطراری امدادرسانی حین زلزله، به‌ویژه مرحلۀ پاسخ به بحران، نقش مهمی ایفا می‌کنند. حفظ عملکرد این شبکه از معابر، ساعات اولیۀ پس اهمیت بسزایی دارد. محافظت و مقاوم‌سازی اجزای آسیب‌پذیر شبکه، به‌خصوص پل‌ها، پیش وقوع تأثیر شایان توجهی کاهش خسارات آسیب‌ها اغلب اوقات تمامی آسیب‌پذیر، به‌دلیل محدودیت بودجه، عملاً ناممکن است. ایجاب می‌کند که با شناسایی دقیق گزینه‌های ابتد...

Aquatic birds have high cost of thermoregulation, especially during the moulting period, yet the effect of water temperature on the moulting strategy of aquatic birds has rarely been studied. Our general hypothesis is that energy savings associated with lower thermoregulation costs would be allocated to moulting processes. We predicted that aquatic birds moulting in warm water would have a high...

Bilâl b. Rabah al-Habashî is among the first people who convert to Islam. After becoming a Muslim, he never left Messenger of Allah until his death. As was person recites adhan, had an exceptional place in history He witnessed almost entire period prophethood Muhammad, which lasted for twenty-three years. Although always with Prophet, very few hadiths were reported from him. In this study, afte...