21,092 research outputs found

    Report on Meteorological Research March 1, 1935 (m-1)

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    The object of the report was to elucidate in detail the various features of the research program in meteorology being carried on at the Daniel Guggenheim Airship Institute in Akron, Ohio. Mr. L. J. Fangman, of the U.S. Weather Bureau, was collaborating with the author in carrying out work such as a study of autographic records of the various meteorological elements during frontal passages with a view to the possible prediction of the intensity of the accompanying disturbance as it may affect the operation of aircraft and a study of atmospheric gustiness with a view to finding the dependence between frequency end amplitude of velocity fluctuations and the vertical temperature and velocity gradients

    (Fourth) Report on Meteorological Activities at the DGAI (8-1-36)(Weather Bureau Copy)

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    This report is on the investigations of frontal phenomena at the Daniel Guggenheim Airship Institute in Akron, Ohio from January 1, 1935 through August 1, 1936. The investigation was carried out with the cooperation of the U.S. Bureau of Aeronautics, the U.S. Weather Bureau, the California Institute of Technology, and the Guggenheim Airship Institute. Mr. R.C. Robinson of the Weather Bureau cooperated with the author in carrying out the investigation. The object of the investigation was to determine the intensity of the atmospheric disturbances (i.e. rapidity of wind shift and gustiness) accompanying the passage of cold fronts, along with a study of the characteristics of the air masses involved and other features which might affect the intensity of the disturbance. The report treated thirty cold fronts which passed the station during 1935 to 1936

    Reacción de radicales pentafluoretilo con cianuro de hidrógeno y efecto isotópico cinético en las reacciones de radicales CF3 y C2 F5

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    Tesis (Dr. en Físico Química)--Universidad Nacional de Córdoba. Facultad de Ciencias Químicas, 1982.Fil: Pasteris, Leonor E. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas; Argentina.Los estudios cualitativos de reacciones de atomos radicales con nitrilos son numerosos y ya se ha hecho una revision de ellos en [1]. Sin embargo hay pocos datos cinéticos en fase gaseosa de reacciones con compuestos que contienen el grupo C=N. Entre ellos se puede citar la descomposicion térmica del cloruro de cianogeno ,las reacciones de átomos de oxigeno con: (CN3), [3], HCN, C1CN y BrCN [4] ICN [5], CF3CN y CH3 CN[6], la reacciones de átomos de hidrogeno con ICN [7] , las reacciones de abstraccion de cloro del tricloroacetonitrilo Por radicales CH 3 y de CHC12 CN y CH 2 C1CN Por radicales c -CH5 [9], En este laboratorio se ha investigado la reaccion de atomos de fluor con cloruro de cianogeno en fase gaseosa [10] encontrandose como productos principales CCl z Fz v CF3 01 ademas de Nz , La formación de estos productos ha sido explicada Por ir mecanismo en el cual se forma un radical CF3 Ci • Esto sugirió el estudio de las reacciones de radicales CF3 [11] y CZF5 [1], con C1CN Ambas reacciones fueron analizadas en un amplio intervalo de temperatura, la primera entre -3 y 400° C y la secunda entre 20 y 300°C, Los Productos Principales fueron RC1 R2, y RCN (R = CF3 o CF5 ). La relación V RCI / V R [C1CNJ ( V = Velocidad de formación de producto) fije una constante a cada temperatura y graficada en una expresión, de Arthenius se encontro una Pronunciada curvatura que fije explicada Por el mecanismo en el cual dos procesos contribuyen a la formacion de RC1. Uno de ellos corresponde a la abstracción directa de cloro del C1CN Por el radical R (3) w el otro lo constituye liria adicion del radical al CAN formando un radical aducto.Fil: Pasteris, Leonor E. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas; Argentina

    Daniel Akech

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    abstract: Daniel was a little boy when the war came to his village. He witnessed people being shot and running for shelter. There was no food or water so he drank urine and ate tree leaves. “Lost Boys Found” is an ongoing, interdisciplinary project that is collecting, recording and archiving the oral histories of the Lost Boys/Girls of Sudan. The collection is a work-in-progress, seeking to record the oral history of as many Lost Boys/Girls as are willing, and will be used in a future book.Age: 24Region: Upper NileThis picture and bio was donated to the "Lost Boys Found" oral history project from The Arizona Lost Boys Cente

    Daniel Emmett postcard

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    Postcard of Daniel Emmett and his home in Mount Vernon, Ohio. Emmett is considered to be the author of the antebellum song "Dixie," written in 1859, which became the unofficial song of the Confederate soldiers during the American Civil War. He was born in Mount Vernon in 1815 and taught himself the fiddle, and later became associated with minstrel shows and helped to define that genre. Minstrel shows traveled around the United States, presenting skits and musical performances. Emmett also composed many other songs, including "Old Dan Tucker," "Turkey in the Straw," and "The Blue Tail Fly." He died in 1904

    Daniel Jau Maper

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    abstract: Daniel Jau Maper was herding cattle when Arabs attacked his village. “Lost Boys Found” is an ongoing, interdisciplinary project that is collecting, recording and archiving the oral histories of the Lost Boys/Girls of Sudan. The collection is a work-in-progress, seeking to record the oral history of as many Lost Boys/Girls as are willing, and will be used in a future book.Age: 27Region: Upper NileThis picture and bio was donated to the "Lost Boys Found" oral history project from The Arizona Lost Boys Cente

    Daniel A. Ngor

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    When Daniel was five years old Arab soldiers attacked his village. “Lost Boys Found” is an ongoing, interdisciplinary project that is collecting, recording and archiving the oral histories of the Lost Boys/Girls of Sudan. The collection is a work-in-progress, seeking to record the oral history of as many Lost Boys/Girls as are willing, and will be used in a future book.Age : 23Region: Upper NileThis picture and bio was donated to the "Lost Boys Found" oral history project from The Arizona Lost Boys Cente

    Personal Papers (MS 80-0002)

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    Letter from Mary T. Steyn of The Readers Digest to Daniel W. Kempner providing some information on the author of an article he was asking about

    Meet Daniel Melnick author of The Ash Tree

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    Meet Daniel Melnick author of The Ash Tree. It tells a timeless story of the romance and marriage between an American Armenian girl and an immigrant who survived the 1915 Armenian Genocide in Turkey. In the aftermath of the Genocide from the 20s through the early 70s, the couple and their three children become vivid, quintessentially American characters, only for tragedy to find them again, echoing the staggering losses of 1915. The cover painting with its frayed, whitewashed frame is by the author’s wife, Jeanette Arax Melnick, and the novel is based partly on the lives of her family. Combining history and fictionalized memoir, The Ash Tree is an important, beautifully written novel of survival, new life, and heartbreak. Available from independent bookstores, Barnes and Noble, and Amazon.com. Further information at www.danielmelnick.com. Price: $25. ISBN: 9780981854762
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