863 research outputs found

    INFRARED SPECTRA OF GUEST MOLECULES IN CRYSTALLINE CLATHRATE HYDRATE FILMS

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    1^{1} J. E. Bertie and J. P. Devlin, J. Chem. Phys. 78. 6340 (1983). 2^{2}H. H. Richardson, P. J. Wooldridge and J. P. Devlin, J. Chem. Phys., 83, 4387 (1985)Author Institution: Department of Chemistry, Oklahoma State UniversityThe guest molecules in a clathrate hydrate are isolated in well-defined cages. Such systems were difficult to study spectroscopically prior to the demonstration that crystaline films of the clathrate hydrates of polar molecules can be readily deposited from the vapor phase1,2phase^{1,2}. Recently, as part of a study of the mechanism of the growth of ice-like crystals at low temperatures, infrared spectra of several caged molecules have been measured. The spectra are marked by evidence of dynamical coupling between neighbour guest molecules, Evans holes (i.e., Fano antiresonances) caused by the interaction of guest and host vibrational states, and sharp variations with temperature that reflect the orientational dynamics of the engaged molecules

    The Interaction of HCl and Crystalline Ice Clusters at Cryogenic Temperatures: Evidence of the Molecular Complex

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    1. Lance Delzeit, Brad Rowland, and J. Paul Devlin; J. Phys. Chem. 97 10312 (1993). 2. B. S. Ault and G. C. Pimentel; J. Phys. Chem. 77 57 (1973). 3. A. Schriver, et. al.; J. Phys. Chem. 87 2095 (1977). 4. G. Kroes and D. C. Clary; J. Phys. Chem. 96 7079 (1992). 5. Brad Rowland, Mark Fisher, and J. Paul Devlin; J. Chem. Phys. 95 1378 (1991).Author Institution: Oklahoma State University, Stillwater, OK 74078The addition of HCl to the surface of crystalline ice clusters at cryogenic temperatures produces spectroscopic changes which can be related to the formation of the hydronium ion and the HCl acting as a molecular adsorbate. The hydronium ion is identified from its IR active modes below 2200cm12200cm^{-1}. Evidence for the HCl acting as a molecular adsorbate is its effect on the dangling-hydrogen (d-H) mode and the appearance of a 2500cm12500cm^{-1} band. Analogous spectra for with the HBrH2OHBr-H_{2}O and the DClD2ODCl-D_{2}O systems1systems^{1} show two bands relative to the one band in the 2500cm12500cm^{-1} region due to the HClH2OHCl-H_{2}O interaction. The single band in the HCl system is attributed to the near overlap of the bands due to the molecular and ionic interaction of the HCl and H2OH_{2}O. Reference to matrix isolation2,3isolation^{2,3} and computational work4work^{4} will show the plausibility of the presence of the molecular complex. Shifting of the d-H band is a common effect for molecularly adsorbed species on the surface of ice.5ice.^{5} The shifting of the d-H to a position yet unobserved for common adsorbates gives strong evidence of the HCl acting as a molecular adsorbate

    RNAseq analysis of fast skeletal muscle in restriction-fed transgenic coho salmon (Oncorhynchus kisutch) : an experimental model uncoupling the growth hormone and nutritional signals regulating growth

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    Background Coho salmon (Oncorhynchus kisutch) transgenic for growth hormone (Gh) express Gh in multiple tissues which results in increased appetite and continuous high growth with satiation feeding. Restricting Gh-transgenics to the same lower ration (TR) as wild-type fish (WT) results in similar growth, but with the recruitment of fewer, larger diameter, muscle skeletal fibres to reach a given body size. In order to better understand the genetic mechanisms behind these different patterns of muscle growth and to investigate how the decoupling of Gh and nutritional signals affects gene regulation we used RNA-seq to compare the fast skeletal muscle transcriptome in TR and WT coho salmon. Results Illumina sequencing of individually barcoded libraries from 6 WT and 6 TR coho salmon yielded 704,550,985 paired end reads which were used to construct 323,115 contigs containing 19,093 unique genes of which >10,000 contained >90 % of the coding sequence. Transcripts coding for 31 genes required for myoblast fusion were identified with 22 significantly downregulated in TR relative to WT fish, including 10 (vaspa, cdh15, graf1, crk, crkl, dock1, trio, plekho1a, cdc42a and dock5) associated with signaling through the cell surface protein cadherin. Nineteen out of 44 (43 %) translation initiation factors and 14 of 47 (30 %) protein chaperones were upregulated in TR relative to WT fish. Conclusions TR coho salmon showed increased growth hormone transcripts and gene expression associated with protein synthesis and folding than WT fish even though net rates of protein accretion were similar. The uncoupling of Gh and amino acid signals likely results in additional costs of transcription associated with protein turnover in TR fish. The predicted reduction in the ionic costs of homeostasis in TR fish associated with increased fibre size were shown to involve multiple pathways regulating myotube fusion, particularly cadherin signaling.Peer reviewe

    Baseball Team, 1903

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    VMI Baseball team group. Includes Robert B. Allport (Class of 1904); William B. Anderson (Class of 1903); William L. Carneal (Class of 1903); William Couper (Class of 1904); John W. Crowdus (Class of 1904); Arthur Devlin (Coach); Tavenor B. Goodloe (Class of 1906); Thomas L. Hill (Class of 1906); Edward H. Johnson (Class of 1904); John E. R. Love (Class of 1906); Kirkwood Otey, Jr. (Class of 1906); John F. Phillips (Class of 1903); Percy W. Pickford (Class of 1906); Robert H. Plant (Class of 1906); Howard D. Porter (Class of 1906); Harry P. Rankin (Class of 1903)

    Gill morphometry in growth hormone transgenic Pacific coho salmon, Onchorhynchus kisutch, differs markedly from that in GH transgenic Atlantic salmon

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    In a previous study we showed that many of the morphological features of the respiratory system of GH (growth hormone) transgenic Atlantic salmon are greater than similarly sized control salmon. Here we show that the manifestation of GH transgene is similar in two different lines of GH transgenic Pacific coho salmon, but that it is very different from that in the GH transgenic Atlantic salmon. The GH transgenic Pacific coho salmon do not have a larger gill surface area than similarly sized control fish.10.1023/A:1007675327017Source type: Electronic(1)http://dx.doi.org/10.1023/A:100767532701

    The Effects of Concentrated Fine Ambient Air Particles on Human Hematology

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    Epidemiologic studies have established a strong association between exposure to air pollution particles and human mortality and morbidity. The excess in mortality is primarily attributed to respiratory injury and cardiac arrest in people with preexisting disease. It was hypothesized that particulate exposure may elicit an acute-phase response leading to blood coagulation and clotting, which may explain the observed adverse health effects. To test this hypothesis, human volunteers were exposed to concentrated ambient particles (CAPS) and blood was drawn before, 0 h post-, and 24 h post-exposure. The 30 subjects included in the study were examined as two distinct subgroups for the purposes of comparing sensitive subpopulations. Twenty young, healthy individuals (18-40 years old) were randomized to either exposure to filtered air (n=6) or CAPS (n=14). Ten geriatric, healthy individuals (60-80 years old) each had two exposures; one to filtered air and the other to CAPS. The blood indices assessed were as follows: fibrinogen, C reactiveprotein (CRP), D-Dimer, von Willebrand factor (vWF), albumin, total protein, lactate dehydrogenase (LDH), and a complete blood count with differential. Decreased numbers of red cells in the peripheral blood occurred in young subjects following exposure to CAPS (p<0.05). Increased concentrations of fibrinogen at 24 h post- and vWF at 0 h post-exposure to CAPS were observed in young subjects (p<0.09). A trend of decreasing concentrations of CRP and LDH was also observed (p<0.05). The response of young and elderly subjects to CAPS exposure differed somewhat, with a heightened response in young subjects due in part to a greater dose received. These results indicate that exposure to fine particles may elicit an acute-phase response, specifically increased blood clotting and coagulability.Master of Science in Public Healt

    CEPAL Review no.5

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    Basic needs or com prehensive development / Sidney Dell. -- Between reality and utopia. The dialectics of the Social sciences in Latin America / Jorge Graciarena. -- External finance and commercial banks. Their role in Latin America’s capacity to import between 1951 and 1975 / Robert Devlin. -- Informal-formal sector interrelationships / Victor Tokman. -- Transnational corporations and export-oriented primary commodities / Benny Widyono. -- Prices and gains in the world coffee trade / Alberto Orlandi. -- Wage disparities in the urban labour market / Paulo R. Souza. -- The International Monetary Fund in a new international financial constellation: An interpretational commentary / David H, Pollock and Carlos Massad

    Instrumentation in the Aerospace Industry

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    Following is the continuation of the list of titles and authors: Liquid-Filled Membrane Pressure Gage. By Xavier J. R. Avula. Solid State Bonding and Packaging Technique for Integrated Sensor Transducers. By Anthony D. Kurtz, Joseph R. Mallon and Harold Bernstein. Theory of Mass Flow Measurement - Its Advantages and Instrumentation Related to Same. By Milton H. November. Acoustic Emission Coincidence Detector for Monitoring High RResidual Stress Areas in Symmetrical Pressure Vessels. By Noel R. Sewall. Use of Cellulose Crystallite Structures with Solid State Strain Gages for Humidity and Moisture Measurement. By Ralph L. Fenner. Digital Strobe Control System for Model Helicopter Testing. By J. Frank Devlin. Rotational Temperature Measurement of Gases Using Laser Raman Scattering Techniques. By Louis Liang and Roy Scott Hickman. Accuracy of Type K Thermocouple Wire Below 500 degree F - A Statistical Analysis. By Daniel G. Sanders. Pressure and Impulse Measurements Close to Explosions in Air and in Earth. By Alex B. Wenzel and Edward D. Esparza. New Pulsed Power Strain-Gage System. By H. Duane Arlowe. Performance and Economic Advantages Offered by a Diffused Semiconductor Strain Gage Pressure Transducer. By Robert L. Cheney

    Revista de la CEPAL no.5

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    Necesidades básicas o desarrollo global. ¿Debe el PNUD tener una estrategia para el desarrollo? / Sidney Dell. -- Entre realidad y utopía. La dialéctica de las ciencias sociales latinoamericanas / Jorge Graciarena. -- El fínanciamiento externo y los bancos comerciales. Su papel en la capacidad para importar de América Latina entre 1951-1975 / Robert Devlin. -- Las relaciones entre los sectores formal e informal / Víctor Tokman. -- Empresas transnacionales y productos básicos de exportación / Benny Widyono. -- Precios y ganancias en el comercio mundial del café / Alberto Orlandi. -- Las desigualdades de salarios en el mercado de trabajo urbano / Paulo R. Souza. -- El Fondo Monetario Internacional en una nueva constelación financiera internacional: Comentario interpretativo / David H. Pollock y Carlos Massad
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