27 research outputs found

    Low-speed wind-tunnel results for symmetrical NASA LS(1)-0013 airfoil

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    A wind-tunnel test has been conducted in the Langley Low-Turbulence Pressure Tunnel to evaluate the performance of a symmetrical NASA LS(1)-0013 airfoil which is a 13-percent-thick, low-speed airfoil. The airfoil contour was obtained from the thickness distribution of a 13-percent-thick, high-performance airfoil developed for general aviation airplanes. The tests were conducted at Mach numbers from 0.10 tp 0.37 over a Reynolds number range from about 0.6 to 12.0 X 10 to the 6th power. The angle of attack varied from about -8 to 20 degrees. The results indicate that the aerodynamic characteristics of the present airfoil are similar to, but slightly better than, those of the NACA 0012 airfoil

    Who’s Reading Your Wall? The Relationships among User Characteristics, Usage and Attitudes Regarding Official Academic Facebook Sites

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    As social networking websites continue to rise in popularity, their role as a communications tool for academic institutions raises intriguing questions. This is especially true of Facebook, which was originally begun as an exclusively college-based social network. Facebook potentially represents an opportunity to cost-effectively communicate with students, faculty and other members of the college community. The goals of this study were to provide descriptive statistics that might aid in better understanding if students currently do or do not visit academic Facebook pages and why they visit those pages, what is most likely to cause them to visit academic Facebook pages, and how universities might best utilize this tool as a means of communication. The implications of that data could be extremely useful, especially in regards to resource allocation and future university communications

    World Antimalarial Resistance Network (WARN) III: Molecular markers for drug resistant malaria

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    Molecular markers for drug resistant malaria represent public health tools of great but mostly unrealized potential value. A key reason for the failure of molecular resistance markers to live up to their potential is that data on the their prevalence is scattered in disparate databases with no linkage to the clinical, in vitro and pharmacokinetic data that are needed to relate the genetic data to relevant phenotypes. The ongoing replacement of older monotherapies for malaria by new, more effective combination therapies presents an opportunity to create an open access database that brings together standardized data on molecular markers of drug resistant malaria from around the world. This paper presents a rationale for creating a global database of molecular markers for drug resistant malaria and for linking it to similar databases containing results from clinical trials of drug efficacy, in vitro studies of drug susceptibility, and pharmacokinetic studies of antimalarial drugs, in a World Antimalarial Resistance Network (WARN). This database will be a global resource, guiding the selection of first line drugs for treating uncomplicated malaria, for preventing malaria in travelers and for intermittent preventive treatment of malaria in pregnant women, infants and other vulnerable groups. Perhaps most important, a global database for molecular markers of drug resistant malaria will accelerate the identification and validation of markers for resistance to artemisinin-based combination therapies and, thereby, potentially prolong the useful therapeutic lives of these important new drugs
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