منابع مشابه
Worrying about weird winters
Winter is a key determinant of biological processes in temperate, alpine, and polar environments. Winters are changing, yet we currently lack the knowledge to adequately predict the impacts of climate change on winter biology, or to link winter conditions to the growing-season performance of most organisms.
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We examine whether any trends in monthly temperatures are the same through-out the year for various lengthy series. The data concern the world, the northern and southern hemispheres, and about three centuries of data for the United Kingdom and the Netherlands. For the empirical exercise, we rely on new and accurate tests which have been recently developed. These tests do not have standard distr...
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A 59-year-old patient with a family history of coronary artery disease and no other risk factors arrived at the emergency department with typical angina chest pain lasting for 60 minutes. The admission electrocardiogram showed 1 mm upsloping ST-segment depression at the J point in leads V3–V6 without peaked T waves (Fig. 1a). The patient underwent primary percutaneous transluminal coronary angi...
متن کاملEntertainment Networking
The ongoing convergence of the Internet and telecommunications and entertainment networks continues to provide new and exciting opportunities for end users, application developers, content providers, and network operators. Traditional entertainment networks developed separately from networks used for communication and commerce. For example, until recently, cable TV networks were one-way broadca...
متن کاملEntertainment Robots
Recent entertainment robots created by Sar-cos Research Corporation and the Center for Engineering Design at the University of Utah are presented. Categories include humanoid and non-humanoid display robots that replay programmed motions, interactive robots that are teleoperated, and humanoid robots for research .
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ژورنال
عنوان ژورنال: Journal of Chemical Education
سال: 1999
ISSN: 0021-9584,1938-1328
DOI: 10.1021/ed076p468.1