α [Greek small letter alpha]-Nitrosulfones: Synthetic and mechanistic studies
Three-α-substituted nitroethylene derivatives were prepared in situ from phenylsulfonylnitromethane, α-nitroacetophenone, and ethyl nitroacetate and allowed to react with a series of dienes to yield the corresponding Diels-Alder cycloadducts. The same nitroethylene derivatives were also prepared from the corresponding β-sulfoxides via elimination. The β-sulfoxides were prepared from the corresponding β-sulfides which were in turn prepared by trapping the nitroethylene derivatives with thiop
Author(s): Murray, James K., Jr.

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Primitive Navigation - Course Trailer
Science of the Physical Universe 26: Primitive Navigation -- John Huth (Physics)
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11.08.2012 – Langsam gesprochene Nachrichten
Trainiere dein Hörverstehen mit den Nachrichten der Deutschen Welle von Samstag – als Text und als verständlich gesprochene Audio-Datei. In den USA will der designierte republikanische Präsidentschaftskandidat Mitt Romney den Kongress-Abgeordneten Paul Ryan zu seinem Vizekandidaten machen. Dies berichteten der Fernsehsender "NBC News" und die Online-Zeitung "Huffington Post" unter Berufung auf Wahlkampfkreise. Der aus Wisconsin stammende Ryan gilt als Nachwuchsstar der Republikanischen Pa
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The Hygienic Efficacy of Different Hand-Drying Methods: A Review of the Evidence
By: WentzMR Susan Stack from Brisbane, Queensland, Australia, discusses her article appearing in the August 2012 issue of Mayo Clinic Proceedings which discloses the ramifications of different hand-drying methods and their effect on infection control. Available at: http://www.mayoclinicproceedings.org/article/S0025-6196(12)00393-X/fulltext
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Lennon and McCartney on Life's Choices
On May 14, 1968, New York's public television station aired a "Newsfront" program featuring an interview with the Beatles' John Lennon and Paul McCartney. The songwriting duo discuss their role as superstars. (1:02)
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Here is a digital story of the children's book First Day Jitters written by Julie Danneberg. The text is difficult to see. (03:51)
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Board of Trustees Meeting 08-21-12
http://www.youtube.com/user/StPetersburgCollege Board of Trustees Meeting 08-21-12 About St. Petersburg College: In 1927, St. Petersburg College (then known as St. Petersburg Junior College) became Florida's first private, non-profit, two-year school of higher learning located in downtown St. Petersburg. Full accreditation followed in 1931 and in 1948 SPC became a public college. In June 2001, SPJC officially became St. Petersburg College when Florida's governor signed legislation making it t
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Parsing Gross Domestic Product - Khan Academy
Sal Khan discusses how to understand what the GDP does and doesn't measure during this twelve-minute video.
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Europe Day Ahead: To cap or not to cap?
Aug. 20 - Scant data makes markets focus on policy, though ECB pours cold water on a Spiegel report on bond yield caps. Meanwhile Greek PM Samaras prepares for a series of crunch talks.
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2004 Purdue University interview with Neil Armstrong about his trip to the moon, with NASA footage.
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Dark Reactions of Photosynthesis
The dark reactions of photosynthesis (Calvin Cycle) are presented in this learning experience to show where these processes take place in the plant as well as the specific reactions involved.
Author(s): Jim Bidlack

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Examination of the Edentulous Patient

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Examination of the Edentulo
Author(s): kludewig

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The secrets of Germany's labour market resilience
Aug. 30 - Stefan Schneider, Chief International Economist at Deutsche Bank, discusses why the German labour market has managed to stay robust in the face of weakening global trade and economic data.
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Chemistry of Cobalt
The professors at the University of Nottingham discuss the applications of cobalt. It has magnetic properties that make it useful in older types of color televisions.  (01:42)
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Regions of the United States
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Cómo reconocer y tratar la dislexia
Este vídeo da ejemplos de como reconocer dislexia. Según el vídeo, es normal que un niño pequeño tenga dificultades para hablar o escribir. Sólo deberías precuparte si estos problemas persisten más allá de los 6 años. (1:56)
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Wilhelmina Boyd commemorative video
Colleagues of Wilhelmina Boyd share their memories of her and her impact at Elon University.
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