1,801 research outputs found

    Study on high performance insulation thermal design criteria Quarterly progress report

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    Diffusion coefficients, outgassing studies, and correlation of complete system thermal model computer program predictions with 82.6 inch tank test dat

    Concussion Awareness and Educational Outreach Through a Website and Mobile Application

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    In recent years concussions have become a more apparent problem in youth and adolescent sports. 1 in 5 high school students will sustain a concussion during the season. Due to medical and scientific advances, the diagnosis of concussions is becoming much simpler with key markers that are signs for an injury. Returning to play too soon before an athlete is fully recovered increases the likelihood that serious and irreversible neurological deficits can occur. Symptoms for concussions are necessary to track in order for an athlete to properly report their recovery to a physician. Doctors primarily rely on a patient’s report of their symptoms to evaluate the total effect of the injury, so recovery times are often misdiagnosed. Ursinus College- Concussion Outreach Group has been created so that concussion awareness can be raised. No methods have been found to completely prevent a concussion, so educational outreach is the first step. The group has decided to utilize a website and mobile application in order to promote safe techniques of play, along with awareness of how complex and misunderstood concussions are. In order to have a better diagnosis of a concussion it is important to completely monitor symptoms, which is possible using a mobile application. The website will serve as an information database, anonymous blog for sharing experiences, and will contain profile with data entered into the application. The site will provide full details on the dangers of concussions, as well as an “Ask the Expert” section for personal questions. It is not expected that this project will ultimately stop concussions from occurring. Granting adolescents the knowledge of the dangers that exist with concussions may cause an overall change in the attitudes attributed with concussions, hopefully so that concussions are not so under diagnosed. The effort behind making the website and mobile application is motivated by the need to promote responsible play in sports, educate everyone involved with the athlete why concussions are so serious, help prevent premature return to play or academia, explain the risks behind playing certain sports, and encourage interest in future findings related to concussions

    Subarcsecond Imaging of the NGC 6334 I(N) Protocluster: Two Dozen Compact Sources and a Massive Disk Candidate

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    Using the SMA and VLA, we have imaged the massive protocluster NGC6334I(N) at high angular resolution (0.5"~650AU) from 6cm to 0.87mm, detecting 18 new compact continuum sources. Three of the new sources are coincident with previously-identified water masers. Together with the previously-known sources, these data bring the number of likely protocluster members to 25 for a protostellar density of ~700 pc^-3. Our preliminary measurement of the Q-parameter of the minimum spanning tree is 0.82 -- close to the value for a uniform volume distribution. All of the (nine) sources with detections at multiple frequencies have SEDs consistent with dust emission, and two (SMA1b and SMA4) also have long wavelength emission consistent with a central hypercompact HII region. Thermal spectral line emission, including CH3CN, is detected in six sources: LTE model fitting of CH3CN(J=12-11) yields temperatures of 72-373K, confirming the presence of multiple hot cores. The fitted LSR velocities range from -3.3 to -7.0 km/s, with an unbiased mean square deviation of 2.05 km/s, implying a dynamical mass of 410+-260 Msun for the protocluster. From analysis of a wide range of hot core molecules, the kinematics of SMA1b are consistent with a rotating, infalling Keplerian disk of diameter 800AU and enclosed mass of 10-30 Msun that is perpendicular (within 1 degree) to the large-scale bipolar outflow axis. A companion to SMA1b at a projected separation of 0.45" (590AU; SMA1d), which shows no evidence of spectral line emission, is also confirmed. Finally, we detect one 218.440GHz and several 229.7588GHz Class-I methanol masers.Comment: 54 pages, 11 figures. Accepted for publication in The Astrophysical Journal. Version 2: Keywords updated, and three "in press" citations updated to journal reference. Version 3: corrected the error in the quantum numbers of the 218 GHz methanol transition in the text and in Table 8. For a PDF version with full-resolution figures, see http://www.cv.nrao.edu/~thunter/papers/ngc6334in2014.pd
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