2,097 research outputs found

    The Role of Industry in the Development of Biomedical Technology

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    The world is undergoing a biological revolution that has made unparalleled demands on the American health care system. This demand for health care and its escalating costs provide abundant Incentives for reducing the cost through better technology. Recent developments in medical technology include the CAT scanner, nuclear magnetic resonance (NMR), as well as new advances in prosthetic devices. Most biomedical research and development takes place at not-for-profit institutions, such as universities, hospitals, and private foundations, much of it supported by federal funding from such sources as the National Institutes of Health. But, today, the institutions are in danger of major cutbacks in funding at a time when inflation has already endangered the resources available for biomedical research. One potential solution to this problem is to encourage a better relationship between industry and the research community; in a period when federal support is obviously leveling off, industry can provide the vital margin while simultaneously encouraging a continued federal commitment. Unfortunately, the objectives of research do not parallel those of industry. Scholarship traditionally has been devoted to the transfer of information by publication, while industry responds to the proprietary needs of a corporation and reflects a commitment to the profit motive. Clearly, any marriage of industry with the scientific research community as a cooperative venture will require some innovative thinking on the part of both

    VAGINAL KERATINIZATION IN VITRO *

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    Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/72603/1/j.1749-6632.1960.tb40908.x.pd

    Raft cultures

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    Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/43237/1/11022_2004_Article_BF00918296.pd

    The Relation Between the Surface Brightness and the Diameter for Galactic Supernova Remnants

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    In this work, we have constructed a relation between the surface brightness (Σ\Sigma) and diameter (D) of Galactic C- and S-type supernova remnants (SNRs). In order to calibrate the Σ\Sigma-D dependence, we have carefully examined some intrinsic (e.g. explosion energy) and extrinsic (e.g. density of the ambient medium) properties of the remnants and, taking into account also the distance values given in the literature, we have adopted distances for some of the SNRs which have relatively more reliable distance values. These calibrator SNRs are all C- and S-type SNRs, i.e. F-type SNRs (and S-type SNR Cas A which has an exceptionally high surface brightness) are excluded. The Sigma-D relation has 2 slopes with a turning point at D=36.5 pc: Σ\Sigma(at 1 GHz)=8.46.3+19.5^{+19.5}_{-6.3}×1012\times10^{-12} D5.990.33+0.38^{{-5.99}^{+0.38}_{-0.33}} Wm2^{-2}Hz1^{-1}ster1^{-1} (for Σ\Sigma3.7×1021\le3.7\times10^{-21} Wm2^{-2}Hz1^{-1}ster1^{-1} and D\ge36.5 pc) and Σ\Sigma(at 1 GHz)=2.71.4+2.1^{+2.1}_{-1.4}×\times 1017^{-17} D2.470.16+0.20^{{-2.47}^{+0.20}_{-0.16}} Wm2^{-2}Hz1^{-1}ster1^{-1} (for Σ\Sigma>3.7×1021>3.7\times10^{-21} Wm2^{-2}Hz1^{-1}ster1^{-1} and D<<36.5 pc). We discussed the theoretical basis for the Σ\Sigma-D dependence and particularly the reasons for the change in slope of the relation were stated. Added to this, we have shown the dependence between the radio luminosity and the diameter which seems to have a slope close to zero up to about D=36.5 pc. We have also adopted distance and diameter values for all of the observed Galactic SNRs by examining all the available distance values presented in the literature together with the distances found from our Σ\Sigma-D relation.Comment: 45 pages, 2 figures, accepted for publication in Astronomical and Astrophysical Transaction

    Dark sectors 2016 Workshop: community report

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    This report, based on the Dark Sectors workshop at SLAC in April 2016, summarizes the scientific importance of searches for dark sector dark matter and forces at masses beneath the weak-scale, the status of this broad international field, the important milestones motivating future exploration, and promising experimental opportunities to reach these milestones over the next 5-10 years

    LSST: from Science Drivers to Reference Design and Anticipated Data Products

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    (Abridged) We describe here the most ambitious survey currently planned in the optical, the Large Synoptic Survey Telescope (LSST). A vast array of science will be enabled by a single wide-deep-fast sky survey, and LSST will have unique survey capability in the faint time domain. The LSST design is driven by four main science themes: probing dark energy and dark matter, taking an inventory of the Solar System, exploring the transient optical sky, and mapping the Milky Way. LSST will be a wide-field ground-based system sited at Cerro Pach\'{o}n in northern Chile. The telescope will have an 8.4 m (6.5 m effective) primary mirror, a 9.6 deg2^2 field of view, and a 3.2 Gigapixel camera. The standard observing sequence will consist of pairs of 15-second exposures in a given field, with two such visits in each pointing in a given night. With these repeats, the LSST system is capable of imaging about 10,000 square degrees of sky in a single filter in three nights. The typical 5σ\sigma point-source depth in a single visit in rr will be 24.5\sim 24.5 (AB). The project is in the construction phase and will begin regular survey operations by 2022. The survey area will be contained within 30,000 deg2^2 with δ<+34.5\delta<+34.5^\circ, and will be imaged multiple times in six bands, ugrizyugrizy, covering the wavelength range 320--1050 nm. About 90\% of the observing time will be devoted to a deep-wide-fast survey mode which will uniformly observe a 18,000 deg2^2 region about 800 times (summed over all six bands) during the anticipated 10 years of operations, and yield a coadded map to r27.5r\sim27.5. The remaining 10\% of the observing time will be allocated to projects such as a Very Deep and Fast time domain survey. The goal is to make LSST data products, including a relational database of about 32 trillion observations of 40 billion objects, available to the public and scientists around the world.Comment: 57 pages, 32 color figures, version with high-resolution figures available from https://www.lsst.org/overvie

    Search for new phenomena in final states with an energetic jet and large missing transverse momentum in pp collisions at √ s = 8 TeV with the ATLAS detector

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    Results of a search for new phenomena in final states with an energetic jet and large missing transverse momentum are reported. The search uses 20.3 fb−1 of √ s = 8 TeV data collected in 2012 with the ATLAS detector at the LHC. Events are required to have at least one jet with pT > 120 GeV and no leptons. Nine signal regions are considered with increasing missing transverse momentum requirements between Emiss T > 150 GeV and Emiss T > 700 GeV. Good agreement is observed between the number of events in data and Standard Model expectations. The results are translated into exclusion limits on models with either large extra spatial dimensions, pair production of weakly interacting dark matter candidates, or production of very light gravitinos in a gauge-mediated supersymmetric model. In addition, limits on the production of an invisibly decaying Higgs-like boson leading to similar topologies in the final state are presente

    Reconnecting with nature for sustainability

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    Calls for humanity to ‘reconnect to nature’ have grown increasingly louder from both scholars and civil society. Yet, there is relatively little coherence about what reconnecting to nature means, why it should happen and how it can be achieved. We present a conceptual framework to organise existing literature and direct future research on human–nature connections. Five types of connections to nature are identified: material, experiential, cognitive, emotional, and philosophical. These various types have been presented as causes, consequences, or treatments of social and environmental problems. From this conceptual base, we discuss how reconnecting people with nature can function as a treatment for the global environmental crisis. Adopting a social–ecological systems perspective, we draw upon the emerging concept of ‘leverage points’—places in complex systems to intervene to generate change—and explore examples of how actions to reconnect people with nature can help transform society towards sustainability

    Lessons from prospective longitudinal follow-up of a French APECED cohort

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    Background Autoimmune polyendocrinopathy-candidiasis-ectodermal dystrophy syndrome is a rare disease caused by biallelic mutations of the AIRE gene, usually presenting with the triad hypoparathyroidism-adrenal failure-chronic mucocutaneous candidiasis (CMC) and nonendocrine manifestations. The aim of this study was to determine the molecular profile of the AIRE gene, the prevalence of rare manifestations, and to characterize immunological disturbances in a French cohort. Patients and Methods A national, multicenter prospective observational study to collect genetic, clinical, biological, and immunological data (NCT03751683). Results Twenty-five patients (23 families) were enrolled. Eleven distinct AIRE variants were identified, 2 of which were not previously reported: an intronic variant, c.653-70G > A, and a c.1066del (p.Arg356GlyfsX22) variant (exon 9). The most common was the Finnish variant c.769C > T (16 alleles), followed by the variant c.967_979del13 (15 alleles), which seemed associated with a less severe phenotype. Seventeen out of 25 patients were homozygote. The median number of clinical manifestations was 7; 19/25 patients presented with the hypoparathyroidism-adrenal failure-CMC triad, 8/13 showed pulmonary involvement, 20/25 had ectodermal dystrophy, 8/25 had malabsorption, and 6/23 had asplenia. Fifteen out of 19 patients had natural killer cell lymphopenia with an increase in CD4+ and CD8+ T lymphocytes and an age-dependent alteration of B lymphocyte homeostasis compared with matched controls (P < .001), related to the severity of the disease. All tested sera (n = 18) were positive for anti-interferon-α, 15/18 for anti-IL-22 antibodies, and 13/18 for anti-IL-17F antibodies, without clear phenotypic correlation other than with CMC. Conclusion This first prospective cohort showed a high AIRE genotype variability, with 2 new gene variants. The prevalence of potentially life-threatening nonendocrine manifestations was higher with systematic screening. These manifestations could, along with age-dependent B-cell lymphopenia, contribute to disease severity. Systematic screening for all the manifestations of the syndrome would allow earlier diagnosis, supporting vaccination and targeted therapeutic approaches
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