753 resultados para Bruner, Jerome S. -- Intervius
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Cover title.
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Bibliographical foot-notes.
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Mode of access: Internet.
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Includes bibliographical references and indexes.
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Reporters: 1896-1905, M.T. Hun.--1906-1919, J.B. Fisher.--1920-1942, A.B. Griffin.
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"DOT-T-92-18."
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Mode of access: Internet.
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Bibliography: v. 1, p. 234-237; v. 2, p. 249-254.
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Mode of access: Internet.
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Poem "Peter Bruner by Edna Bradley (Granddaughter)" on pages 53-54.
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80 Briefe zwischen Julian und Lotte Gumperz und Max Horkheimer, 1934 - 1942; 1 Brief von Max Horkheimer an Jerome D. Green, 05.09.1935; 1 Brief an die Rockefeller Foundation (Paris) von Julian Gumperz, 01.09.1935; 1 Brief von Julian Gumperz an Arthur Surveyer, 24.05.1935; 3 Briefe von der William M. Mortimer Company (New York) and Max Horkheimer, 1934; 4 Briefe von Julian Gumperz an die William M. Mortimer Company (New York), 1934; 2 Briefe zwischen Robert S. Lynd und Julian Gumperz, Juli 1934; 2 Briefe zwischen Julian Gumperz und Frederick Pollock, 1934; 1 Brief an Birchman & Molloy von Julian Gumperz, 16.05.1934; 1 Brief von Julian Gumperz an A. Flexner, 14.05.1934; 1 Brief an die United States Lines (New York) von Julian Gumperz, 10.05.1934; 24 Briefe zwischen Julian Gumperz und Taylor Mitchell (Capron & Marsh, New York), 1934 - 1935; 1 Brief von The Brookings Institution (Washington D.C.) an Julian Gumperz, 11.07.1934;
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Infections caused by community-acquired (CA)-methicillin-resistant Staphylococcus aureus (MRSA) have been reported worldwide. We assessed whether any common genetic markers existed among 117 CA-MRSA isolates from the United States, France, Switzerland, Australia, New Zealand, and Western Samoa by performing polymerase chain reaction for 24 virulence factors and the methicillin-resistance determinant. The genetic background of the strain was analyzed by pulsed-field gel electrophoresis (PFGE) and multi-locus sequence typing (MLST). The CA-MRSA strains shared a type IV SCCmec cassette and the Panton-Valentine leukocidin locus, whereas the distribution of the other toxin genes was quite specific to the strains from each continent. PFGE and MLST analysis indicated distinct genetic backgrounds associated with each geographic origin, although predominantly restricted to the agr3 background. Within each continent, the genetic background of CA-MRSA strains did not correspond to that of the hospital-acquired MRSA.
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A central feature in the Hilbert space formulation of classical mechanics is the quantisation of classical Lionville densities, leading to what may be termed Groenewold operators. We investigate the spectra of the Groenewold operators that correspond to Gaussian and to certain uniform Lionville densities. We show that when the classical coordinate-momentum uncertainty product falls below Heisenberg's limit, the Groenewold operators in the Gaussian case develop negative eigenvalues and eigenvalues larger than 1. However, in the uniform case, negative eigenvalues are shown to persist for arbitrarily large values of the classical uncertainty product.
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Magnitudes and patterns of energy expenditure in animal contests are seldom measured, but can be critical for predicting contest dynamics and understanding the evolution of ritualized fighting behaviour. In the sierra dome spider, males compete for sexual access to females and their webs. They show three distinct phases of fighting behaviour, escalating from ritualized noncontact display (phase 1) to cooperative wrestling (phase 2), and finally to unritualized, potentially fatal fighting (phase 3). Using CO2 respirometry, we estimated energetic costs of male-male combat in terms of mean and maximum metabolic rates and the rate of increase in energy expenditure. We also investigated the energetic consequences of age and body mass, and compared fighting metabolism to metabolism during courtship. All three phases involved mean energy expenditures well above resting metabolic rate (3.5 X, 7.4 X and 11.5 X). Both mean and maximum energy expenditure became substantially greater as fights escalated through successive phases. The rates of increase in energy use during phases 2 and 3 were much higher than in phase 1. In addition, age and body mass affected contest energetics. These results are consistent with a basic prediction of evolutionarily stable strategy contest models, that sequences of agonistic behaviours should be organized into phases of escalating energetic costs. Finally, higher energetic costs of escalated fighting compared to courtship provide a rationale for first-male sperm precedence in this spider species. (C) 2004 The Association for the Study of Animal Behaviour. Published by Elsevier Ltd. All rights reserved.
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Mannose-binding type 1 pili are important virulence factors for the establishment of Escherichia coli urinary tract infections (UTIs). These infections are initiated by adhesion of uropathogenic E. coli to uroplakin receptors in the uroepithelium via the FimH adhesin located at the tips of type 1 pili. Blocking of bacterial adhesion is able to prevent infection. Here, we provide for the first time binding data of the molecular events underlying type 1 fimbrial adherence, by crystallographic analyses of the FimH receptor binding domains from a uropathogenic and a K-12 strain, and affinity measurements with mannose, common mono- and disaccharides, and a series of alkyl and aryl mannosides. Our results illustrate that the lectin domain of the FimH adhesin is a stable and functional entity and that an exogenous butyl alpha- D-mannoside, bound in the crystal structures, exhibits a significantly better affinity for FimH (K-d = 0.15 muM) than mannose (K-d = 2.3 muM). Exploration of the binding affinities of alpha-D-mannosides with longer alkyl tails revealed affinities up to 5 nM. Aryl mannosides and fructose can also bind with high affinities to the FimH lectin domain, with a 100-fold improvement and 15-fold reduction in affinity, respectively, compared with mannose. Taken together, these relative FimH affinities correlate exceptionally well with the relative concentrations of the same glycans needed for the inhibition of adherence of type 1 piliated E. coli. We foresee that our findings will spark new ideas and initiatives for the development of UTI vaccines and anti-adhesive drugs to prevent anticipated and recurrent UTIs.