11,181 research outputs found

    Gustavo Fuchs - Tecnology Transfer

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    Fil: Fuchs, Gustavo. Universidad Hebrea de Jerusalem; IsraelYissum es la empresa de Desarrollo de Investigación de la Universidad Hebrea de Jerusalem, fundada en 1964 para proteger y comercializar la propiedad intelectual de la Universidad Hebrea.\nLíder entre las compañías de transferencia tecnológica a nivel mundial, ha registrado 9150 patentes, 2575 invenciones, 825 licencias y 110 spin offs

    Wiltrud Fuchs, órgano (Alemania)

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    Concierto interpretado por el organista Wiltrud Fuchs. Fuchs nació en 1945 en Heidelberg (Alemania), donde realizó sus estudios de piano y después de órgano, que luego perfeccionó bajo la dirección del notable profesor de órgano, Michael Schneider. En 1969 obtuvo una beca otorgada por el servicio alemán de 1 ntercambio Académico, y al año siguiente ganó el premio del Concurso Internacional de órgano "Música Sacra" de Nurenberg (Alemania). Wiltrud Fuchs es en la actualidad una de las más famosas organistas no sólo de Alemania, sino de Europa. Ha realizado giras de concierto en Austria, Alemania, Inglaterra, Francia, y por las grandes ciudades de Norte y Sur América

    Larval responses to turbulence and temperature in a tidal inlet: Habitat selection by dispersing gastropods?

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    Author Posting. © Sears Foundation for Marine Research, 2010. This article is posted here by permission of Sears Foundation for Marine Research for personal use, not for redistribution. The definitive version was published in Journal of Marine Research 68 (2010): 153-188, doi:10.1357/002224010793079013.Marine larval dispersal is affected by hydrodynamic transport and larval behavior, but little is known about how behavior affects large-scale patterns of dispersal and recruitment. Intertidal habitats are characterized by strong and variable turbulence relative to shelf and pelagic waters, so larval responses to turbulence may affect both dispersal and habitat selection. This study combined observations and theoretical approaches to model gastropod larval responses to multiple physical variables in a well-mixed tidal inlet. Physical measurements and larvae were collected in July 2004 in Barnstable Harbor, Massachusetts (USA). Physical measurements were incorporated in an advection-diffusion model where larval vertical velocity is a function of turbulence dissipation rate, temperature, and the temperature gradient. Modeled larval distributions were fitted to observed concentration profiles by maximum likelihood to estimate larval behavioral velocity (swimming or sinking) as a function of environmental conditions. These quantitative behavior estimates were used to test hypotheses about behavioral differences among groups and to assess the relative impact of different cues on overall larval behavior. Larvae of five common gastropod species from different coastal habitats reacted most strongly to turbulence but had genus-specific responses to environmental cues. Larvae of a species from tidal inlets (the mud snail Nassarius obsoletus) had near-zero velocities under calmer conditions and sank in strong turbulence. In contrast, larvae from exposed beach habitats (Crepidula spp. and Anachis spp.) sank in weak turbulence and swam up in strong turbulence, with additional responses to temperature and temperature gradient. Larval responses also differed between small and large size classes and between flood and ebb tides. Behavior of mud snail larvae would contribute to retention inside the inlet and near adult habitats, whereas behavior of beach snail larvae would contribute to rapid export from muddy inlets lacking suitable adult habitats.This work was funded by the Woods Hole Oceanographic Institution (WHOI) Coastal Ocean Institute, the WHOI Rinehart Coastal Research Center, the National Science Foundation (NSF OCE- 0326734), NSF and US Office of Naval Research grants to S. Elgar and B. Raubenheimer, and the WHOI Sea Grant (National Oceanic and Atmospheric Administration, Grant No. NA16RG2273, project no. R/O-38-PD). Analyses were completed while HLF was a postdoctoral scholar at Scripps Institution of Oceanography (SIO), supported by the California Current Ecosystem Long-Term Ecological Research program (NSF OCE-0417616) and by SIO funding to P. Franks

    Mussel larval responses to turbulence are unaltered by larvalage or light condition

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    Larval responses to hydromechanical cues potentially have important effects on larval dispersal and settlement. This study examined the behavior of mussel larvae (Mytilus edulis) in laboratory-generated turbulence representative of nearshore currents. We video recorded the behavior of early- and late-stage veligers in a grid-stirred tank at five turbulence levels under light and dark conditions. Water velocities and kinetic energy dissipation rates were measured using particle image velocimetry and acoustic Doppler velocimetry. We characterized the vertical velocity distributions for sinking, hovering, and swimming modes in still water and calculated the average larval behavioral velocity in turbulence. In still water, young larvae had more positive (upward) velocities than old larvae, and both stages had more positive velocities in light than in dark. In turbulence, the mean larval vertical velocity varied from positive at low dissipation rates to negative at dissipation rates above a threshold of 8.3 £ 1022 cm2 s23. At this threshold, the Kolmogorov length scale (h ¼ 590mm) was two to three times the mean larval shell lengths (171–256mm), implying that turbulence is detectable even by larvae that are smaller than the smallest eddies. Responses to turbulence were unaffected by larval age or light conditions and contributed substantial behavioral variation. By sinking in strong turbulence, mussel larvae could increase their flux to the bed in energetic coastal flows, particularly over rough substrates like mussel beds. The response to turbulence by early-stage larvae will also affect their dispersal and may help larvae remain near coastal populations.Peer reviewedOriginally published in Limnology and Oceanography: Fluids & Environments (2011) and available via this link: http://lofe.dukejournals.org/content/1/120.full.pdfCopyright 2011 by the Association for the Sciences of Limnology and Oceanography, Inc

    Frieda Fuchs Collection 1907-1957

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    The collection contains materials representing the academic career of Frieda Fuchs, from her early school years, through her doctoral studies and research into psychology in Germany, to her career in the United States. The following material is from her earlier years in Germany: grade certificates from the Grossherzogliche Seminar für Volksschullehrerinnen in Darmstadt indicating good marks (1907-1914); her teaching contract for the Israelitische Volksschule (1916), certificates confirming satisfactory studies and a diploma granting a doctoral degree from the Universtät Frankfurt am Main, in recognition of her dissertation "Experimentelle Studien über das Bewegungsnachbild" (1927-1928). The following material is from either shortly before or after her emigration to the United States: editions of her curriculum vitae (1940-1941); letters of recommendation, job correspondence and offers (1939-1942), report entitled "Von Nachbildern und ihrer Bedeutung," undated. Also included is an offprint, signed by the author, Dr. S. Hirsch, entitled "Die letzten Millimeter der arteriellen Strombahn," and two photographs of Frieda Fuchs approximately ages 30 and 50.Frieda Fuchs was born in Dieburg in 1893. She studied at the teacher's college in Darmstadt and the University in Frankfurt, receiving her doctoral degree in in 1928. From 1914 through 1940 she taught at the Israelitische Volksschule in Frankfurt am Main. She also gave classes at the Heim des Juedischen Frauenbundes in Neu-Isenburg. She immigrated to the United States in 1940 and found employment with the congregation of Rabbi Dr. Breuer in New York. At the same time she enlisted the support of the American Psychological Association Committee on Displayed Foreign Psychologists. She died in New York in 1974.Processed for digitizationdigitized2007110

    Fuchs, Y

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    FUCHS, Richard

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    Correspondence made between Richard Fuchs and General Plutarco Elías Calles relating to a shipyard and naval construction project. General Calles answers him that he regrets that he has not managed to awaken the interest of the president of the Republic nor of the private investment, and that he cannot help him since he has removed himself from all activity and business. / Correspondencia efectuada entre el señor Richard Fuchs y el general PEC relativa a un proyecto de astillero y construcciones navales; contestándole el general PEC que lamenta que no haya logrado despertar el interés del presidente de la República ni del capital privado pero no puede ayudarlo en virtud de encontrase retirado de toda actividad o negocio

    La psiquiatría fenomenológica de la esquizofrenia según Thomas Fuchs

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    Resumen Esta investigación trata sobre la esquizofrenia como trastorno de la intercorporalidad. Ésta según Thomas Fuchs, sucesor de Karl Jaspers en la cátedra, y como él, psiquiatra y filósofo, no es un trastorno ni primariamente cognitivo ni neurológico, sino de la intersubjetividad encarnada. Al explorar esta tesis, desarrollaremos gran parte de los conceptos de la antropología filosófica elaborada por Fuchs: resonancia corpórea, transparencia corpórea, intercorporalidad e interafectividad.   &nbsp

    Plankton community properties determined by nutrients and size-selective feeding

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    The potential impacts of climate change on marine planktonic ecosystems remain difficult to predict. Climate forcing can alter nutrient availability and predator community composition, and here we show that these shifts may dramatically alter plankton trophic structure, size distributions and biomass. We modeled phytoplankton and zooplankton as a highly resolved size spectrum with size-dependent nutrient uptake and predation and analyzed the model both as a size spectrum and as a food web. Model results identified 2 distinct regimes defined by the average zooplankton feeding preferences. Regime I communities, where planktonic predators are specialists or large relative to prey, had low omnivory, many top predators, low connectance and relatively flat size spectra. Regime II communities, where predators are generalists or small relative to prey, had a high degree of omnivory, no top predators, high connectance and steep size spectra. Model ecosystems with generalist predators had lower size diversity, smaller plankton and gappier size distributions than ecosystems with specialist predators. Nutrient availability had little influence on trophic structure but strongly impacted size structure and biomass. Most surprisingly, phytoplankton biomass sometimes decreased with added nutrients if predators were small relative to prey, implying that both predators and nutrients mediate shifts between bottom-up and top-down control. Based on our synthesized estimates of size-selective feeding parameters, we infer that size and trophic structure should be strongly affected by abundances of generalist, bloom-forming taxa such as salps and jellyfish, many of which are responsive to ocean temperature. Size-selective feeding fundamentally affects community structure and is a likely mechanism of change in planktonic ecosystems where community composition varies with temperature.Article accompanied by supplement (13 p.): Plankton community properties determined by nutrients and size-selective feedingPeer reviewe
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