Crusades and rackets
نویسندگان
چکیده
منابع مشابه
Rackets, Regulation, and the Rule of Law
Governments that levy predatory regulation and provide few weak legal institutions draw businesses into the unofficial economy and compel them to hire private protection organizations. Based on a survey of shopkeepers in three cities in Russia, we find that retail shops face very high levels of predatory regulation and have frequent contacts with private protection rackets. In addition, we show...
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Carbon nanotubes and biological filaments each spontaneously assemble into kinked helices, rings, and "tennis racket" shapes due to competition between elastic and interfacial effects. We show that the slender geometry is a more important determinant of the morphology than any molecular details. Our mesoscopic continuum theory is capable of quantifying observations of these structures and is su...
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Squash rackets is a game played at a fast pace, popular in over fifty countries, with an estimated half million players in Great Britain alone. It is played between two, or occasionally four, players in an enclosed court of specified dimensions, using rackets similar to but smaller than a tennis racket, and with a hollow black rubber ball I} in. in diameter and i oz. in weight. There has been a...
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Self-ligating brackets do not require an elastic or wire ligature, but have an inbuilt mechanism that can be opened and closed to secure the archwire. In the overwhelming majority of designs, this mechanism is a metal face to the bracket slot that is opened and closed with an instrument or fingertip. Brackets of this type have existed for a surprisingly long time in orthodontics—the Russell Loc...
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In the middle ages, the Crusaders possessed some parts of the western territory of the Islamic world and continued their establishment until the 6th and 7th centuries. Considering religious teachings regardless of ethnic, political, and religious diversity could have played a strategic role in how Muslims faced the crusaders. The main question of the research is how Islamic unity doctrines in t...
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ژورنال
عنوان ژورنال: Nature
سال: 1991
ISSN: 0028-0836,1476-4687
DOI: 10.1038/353125a0