1,721,476 research outputs found
Neurosurgical diseases: an evidence-based approach to guide practice/ [edited by] Leon T. Lai, Cristian Gragnaniello.
No full textIncludes bibliographical references and index."Evidence-based neurosurgery is one of the most important pillars upon which to build decision management pathways. Effective delivery of care involves understanding the natural history of the disease and the evidence behind available treatment options. Neurosurgical Diseases: An Evidence-Based Approach to Guide Practice by esteemed neurosurgeons Leon T. Lai, Cristian Gragnaniello, and expert contributors covers cranial pathologies neurosurgeons commonly encounter in everyday practice"--1 online resourc
Interview with Leon T. Silver
Full text linkInterview in six sessions, in December 1994-January 1995 and February 2000, conducted by Shirley K. Cohen with Leon T. Silver, W. M. Keck Foundation Professor for Resource Geology, emeritus, at Caltech. This lengthy interview begins with discussion of family background in Russia and Poland, youth in New York and Connecticut, and beginning of higher education at Colorado School of Mines, 1942. Recalls participation in navy V-12 program at U. of Colorado; degree in civil engineering and entry into Naval Civil Engineer Corps; decision to resume work in geology at U. of New Mexico after discharge in 1946; master's degree 1948; entry into PhD program in geology at Caltech, fall 1948. Recalls Caltech geology division in 1948; its history and personnel to that time. Changes following WWII: Robert P. Sharp becomes chairman; recruitment of Harrison Brown to Caltech; beginning of geochemistry studies; Silver assigned to Brown's group; group members Samuel Epstein, Clair Patterson and Charles McKinney; Patterson's work on age of the Earth. Funding for new state-of-the-art geochemistry labs; McKinney builds new mass spectrometers. Interlude concerning personal history. Continues on work with Harrison Brown group, 1950s; recruitment of Gerald Wasserburg, 1955; appointments of Clarence Allen and Frank Press. Silver's work on radiogenic lead systems. Beginnings of planetary science at Caltech; Brown's study of meteorites; appointment of Bruce Murray. Decision to choose planetary science over marine sciences; subsequent loss of Frank Press. US decision to put a man on the moon; proposals to NASA to do lunar-sample analysis; Caltech dominates first lunar science conference (Houston, January 1970); Silver's training of Apollo astronauts in geology, especially Harrison "Jack" Schmitt (Caltech BS, 1957). Recalls 1971 San Fernando earthquake's impact on geology. Describes Grand Canyon trips for Caltech Associates and trustees involving Eugene Shoemaker and Silver; other alumni trips; establishing the R. P. Sharp divisional chair. Notes work outside of Caltech: USGS, NASA, Geological Society of America, National Research Council. Election to National Academy of Sciences, 1974; other awards. Comments on Caltech presidents DuBridge, Brown, Goldberger, Everhart; provosts Bacher, Christy, Vogt. Remarks on LIGO [Laser Interferometer Gravitational-Wave Observatory] and projects of special status. Comments on geology division chairmen. In final session, Silver describes expedition with Gene Shoemaker to find Indian Sipapu [hole where the Hopi people emerged onto Earth] on the Little Colorado River; description of geological feature housing Sipapu; obtaining and bringing sample of Sipapu water back to Caltech's geology division
Sanford Bates Correspondence to Leon T. Stern
No full textA letter addressed to Leon T. Stern from Sanford Bates concerning suggestions Bates made
Sanford Bates Correspondence to Leon T. Stern
No full textA letter addressed to Leon T. Stern from Sanford Bates in which Bates thanks Stern for returning his file
Sanford Bates Correspondence from Leon T. Stern
No full textA letter addressed to Sanford Bates from Leon T. Stern concerning suggestions to revisions made by Bates to a report initially authored by Helen Pigeon
Sanford Bates Correspondence from Leon T. Stern
No full textA letter addressed to Sanford Bates from Leon T. Stern in which Stern says he is returning Bates' file that held inforation over the Ulman Foundation Survey
Sanford Bates Correspondence to Leon T. Stern
No full textA letter addressed to Leon T. Stern from Sanford Bates concerning a file Bates sent to Stern that held correspondence and materials on the Ulman Foundation survey
Leon T. Butner house in Bethania, 1942.
No full textLeon T. Butner house in Bethania, 1942. This historic house, built in 1775, is sometimes referred to as the Cornwallis House. Today, it is known as the Hauser-Reich-Butner House
Perceptual acoustic space of tyre noise
No full textInternational audienceRoad traffic noise accounts for the majority of perceived urban environmental noise and has important health consequences. The rolling noise of vehicle tyres is a major contributor to perceived road noise. The tread pattern of light vehicle tyres is already designed to minimize the amplitude of the noise emitted, but this is not the case for heavy vehicles. The European LEON-T project aims to minimize the nuisance of heavy vehicle tyres, especially noise. Prior to a study of the effects of tyre noise on sleep, an experiment was conducted to determine the timbre parameters of such noise. The data set used was obtained by a series of recordings on a standardized track using tyres of various sizes. These stimuli were presented to headphones in a free sorting task. The poster will show the results of this experiment, including the correlations between acoustic parameters and perceptual space structure determined from the groups formed by the participants
Sanford Bates Correspondence from Leon T. Stern Page 3
No full textThe third page of a letter addressed to Sanford Bates from Leon T. Stern concerning suggestions to revisions made by Bates to a report initially authored by Helen Pigeon
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