7,462 research outputs found

    Traumatic Myiasis Caused by an Association of <i>Sarcophaga tibialis</i> (Diptera: Sarcophagidae) and <i>Lucilia sericata</i> (Diptera: Calliphoridae) in a Domestic Cat in Italy

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    received: 2015-05-07 accepted: 2015-06-30 published: 2015-08-25© 2015, Korean Society for Parasitology and Tropical Medicine This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. The attached file is the published version of the article.© 2015, Korean Society for Parasitology and Tropical Medicine This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. The attached file is the published version of the article

    A constraint on a varying proton--electron mass ratio 1.5 billion years after the Big Bang

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    A molecular hydrogen absorber at a lookback time of 12.4 billion years, corresponding to 10%\% of the age of the universe today, is analyzed to put a constraint on a varying proton--electron mass ratio, μ\mu. A high resolution spectrum of the J1443++2724 quasar, which was observed with the Very Large Telescope, is used to create an accurate model of 89 Lyman and Werner band transitions whose relative frequencies are sensitive to μ\mu, yielding a limit on the relative deviation from the current laboratory value of Δμ/μ=(9.5±5.4stat±5.3sys)×106\Delta\mu/\mu=(-9.5\pm5.4_{\textrm{stat}} \pm 5.3_{\textrm{sys}})\times 10^{-6}.Comment: Accepted for publication in PRL. Includes supplemental materia

    A Labor of Love: Finding Justice for Victims of Workplace Sexual Harassment Excluded from Title VII

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    I. Introduction “Sexual harassment perpetuates the interlocked structure by which women have been kept sexually in thrall to men and at the bottom of the labor market. Two forces of American society converge: men’s control over women’s sexuality and capital’s control over employees’ work lives.” I first began working with children as a college student in a part-time daycare position and eventually moved into a full-time nanny position after graduating. Working as a nanny was the perfect option for me at the time, as I was seeking temporary work in between my undergraduate education and law school. The opportunity also seemed natural given my background working in childcare. For me, the nanny experience was incredibly positive despite the very informal nature of my position. The family I worked for was happy to provide me with requested time off and a salary within the range I requested. I was compensated for work-related expenses, and I always felt like my work environment was safe and professional. In many ways, working for a family seemed no different than my prior experience working in childcare for a large company. Of course, the positivity of this experience can largely be attributed to my status as a friend of the family, as well as my privileged identities as a white woman, United States citizen, and native English speaker

    Childhood Disadvantage and Obesity: Is Nurture Trumping Nature?

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    Obesity has been one of the fastest growing health concerns among children, particularly among disadvantaged children. For children overall, obesity rates have tripled from 5% in the early 1970s to about 15% by the early 2000s. For disadvantaged children, obesity rates are closer to 20%. In this paper, we first examine the impact of various measures of disadvantage on children's weight outcomes over the past 30 years, finding that the disadvantaged have gained weight faster. Over the same period, adult obesity rates have grown, and we expect parental obesity to be closely tied to children's obesity, for reasons of both nature and nurture. Thus, examining changes in the parent-child correlation in BMI should give us some insight into the ways in which the environment that parents and children share has affected children's body mass, or into how the interaction of genes and environment has changed. We find that the elasticity between mothers' and children's BMI has increased since the 1970s, suggesting that shared genetic-environmental factors have become more important in determining obesity. Despite the faster weight gain for the disadvantaged, there appears to be no clear difference for by disadvantaged group in either the parent-child elasticity or in identifiable environmental factors. On average, the increases in parents' BMI between the early 1970s and the early 2000s can explain about 37 percent of the increase in children's BMI. Although common environmental/genetic factors play a larger role now than in earlier time periods, child specific environments such as schools and day care play a potentially important role in determining children's health status.

    Dynamical Masses of Young Star Clusters in NGC 4038/4039

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    In order to estimate the masses of the compact, young star clusters in the merging galaxy pair, NGC 4038/4039 (``the Antennae''), we have obtained medium and high resolution spectroscopy using ISAAC on VLT-UT1 and UVES on VLT-UT2 of five such clusters. The velocity dispersions were estimated using the stellar absorption features of CO at 2.29 microns and metal absorption lines at around 8500 \AA, including lines of the Calcium Triplet. The size scales and light profiles were measured from HST images. From these data and assuming Virial equilibrium, we estimated the masses of five clusters. The resulting masses range from 6.5 x 10^5 to 4.7 x 10^6 M_sun. These masses are large, factor of a few to more than 10 larger than the typical mass of a globular cluster in the Milky Way. The mass-to-light ratios for these clusters in the V- and K-bands in comparison with stellar synthesis models suggest that to first order the IMF slopes are approximately consistent with Salpeter for a mass range of 0.1 to 100 M_sun. However, the clusters show a significant range of possible IMF slopes or lower mass cut-offs and that these variations may correlate with the interstellar environment of the cluster. Comparison with the results of Fokker-Planck simulations of compact clusters with properties similar to the clusters studied here, suggest that they are likely to be long-lived and may lose a substantial fraction of their total mass. This mass loss would make the star clusters obtain masses which are comparable to the typical mass of a globular cluster.Comment: 16 pages, 12 figures, A&A accepte

    Evaluation of proposed Skylab and SSP soap products

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    Three personal hygiene cleansing agents and one laundry detergent (sodium dodecyl benzene sulfonate), which are all candidates for use on long-duration space missions, were evaluated in terms of dermatological effects on human subjects and effects on microbiological species. None of the four materials exhibited adverse dermatological effects from either skin patch tests of two weeks duration or a simulated Skylab personal hygiene regimen of up to four weeks duration. No significant alterations in skin microflora during the use regimen were found. None of the four materials were found to serve as microbiological support media for the species tested, but a species of air-borne mold was observed to grow rapidly in a neutralized aqueous solution. None of the candidate agents was found to be strongly biocidal

    Human Factors Engineering Requirements for the International Space Station - Successes and Challenges

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    Advanced technology coupled with the desire to explore space has resulted in increasingly longer human space missions. Indeed, any exploration mission outside of Earth's neighborhood, in other words, beyond the moon, will necessarily be several months or even years. The International Space Station (ISS) serves as an important advancement toward executing a successful human space mission that is longer than a standard trip around the world or to the moon. The ISS, which is a permanently occupied microgravity research facility orbiting the earth, will support missions four to six months in duration. In planning for the ISS, the NASA developed an agency-wide set of human factors standards for the first time in a space exploration program. The Man-Systems Integration Standard (MSIS), NASA-STD-3000, a multi-volume set of guidelines for human-centered design in microgravity, was developed with the cooperation of human factors experts from various NASA centers, industry, academia, and other government agencies. The ISS program formed a human factors team analogous to any major engineering subsystem. This team develops and maintains the human factors requirements regarding end-to-end architecture design and performance, hardware and software design requirements, and test and verification requirements. It is also responsible for providing program integration across all of the larger scale elements, smaller scale hardware, and international partners
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