5,441 research outputs found

    Verification of Monte-Carlo Simulation for STAR EEMC

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    Spin experiments using the STAR detector at Brookhaven National Laboratory seek to measure the gluon contribution to the proton’s spin. The Endcap Electromagnetic Calorimeter (EEMC), a portion of the STAR detector, is used to enhance the clarity and quality of the measurements from proton-proton collisions. These measurements require the EEMC to be well–modeled in the STAR simulation package. This analysis will confront simulations and data from proton-proton collision runs taken in 2006. Comparisons of qualities, such as cluster energy, opening angle, particle invariant masses, and hit distributions will be shown. When validated, the Monte-Carlo simulation will serve STAR physicists as an important tool to help identify and quantify the presence of particles produced in proton-proton collisions, thus aiding the extraction of the gluon contribution to the proton’s spin

    The Simple Truth About the Gender Pay Gap, Spring 2017 Edition

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    This guide provides key facts about the gender pay gap in the United States, along with explanations and resources. Information is organized around five common questions:1. What is the pay gap?2. How does the pay gap affect women of different demographics?3. What causes the pay gap?4. How can I make a difference?5. What should I do if I experience sex discrimination at work

    In-Situ Colloidal MnO2 Deposition and Ozonation of 2,4-Dinitrotoluene

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    Laboratory experiments are presented that demonstrate a novel in situ semipassive reactive barrier for the degradation of 2,4 dinitrotoluene created by coating aquifer surfaces by deposition of colloidal MnO2, which catalyzes ozone degradation and enhances contaminant oxidation. Ozone is added to the reactive barrier and is transported through the zone with the contaminants by existing hydraulic gradients. The communication presents the preliminary laboratory investigation demonstrating the viability of this method. Studies were conducted by coating Ottawa sand with colloidal MnO2. Results show that concentrations of MnO2 in the range of 0.2 mg/g can be deposited with no measurable change in hydraulic conductivity, that there is significant coverage of the sand material by MnO2, and the deposition was not reversible under a wide range of chemical conditions. Ozonation of 2,4-dinitrotoluene in the presence of MnO2- coated sand was demonstrated to result in pseudo-first-order degradation kinetics with respect to DNT with half-lives ranging from 28 to 22 min (at pH 6 and 7, respectively), approximately 25% faster than experiments performed in the absence of MnO2

    Several Habits of Highly Successful Breakeruppers

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    In lieu of an abstract, below is the essay\u27s first paragraph. She takes in a deep breath, and subsequently sucks the remaining air right out of the room; like a toy soldier, her wind up key has already been turned, and she proceeds to recount one of those monotonous stories that makes a man wish he were temporarily deaf. After a long day at work, with his eyes glazing over faster than a doughnut, the man wonders why his girlfriend can not be quiet for at least five minutes

    European foreign policy co-operation: Interpreting the institutional debates from Fouchet to the single European act

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    This thesis focuses upon three distinct episodes in the development of European foreign policy co-operation : 1. The Fouchet Negotiations of 1961-62; 2. The Luxembourg Report of 1970; 3. The Single European Act of 1986. In the context of these episodes a number of consistent themes are apparent. Firstly, the inclusion and participation of the UK is seen to be of crucial importance to the legitimacy and credibility of foreign policy co-operation. Secondly, the gradual but perceptible decline of French influence among its European partners. Thirdly, the importance of the role of the Western European Union in the development of foreign policy co-operation. This thesis develops the view that evolution of European foreign policy co-operation should not be viewed in the context of a struggle between Supranational and Intergovernmental visions of European integration. It concludes that there is among member states a broad underlying consensus with respect to the fundamental character of a European foreign and defence identity

    Developing Sustainable Urban Food Systems

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    The brief offers a number of policy changes that could be used by the city of Salinas in order to break down barriers to sustainable agriculture specifically near low-income high-density residential areas
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