43,301 research outputs found

    O\u27er the Far Blue Mountain

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    O\u27er the far blue mountain,O\u27er the white sea foam,Come thou long parted one,Back to thy home.When the bright fire shineth,Sad looks thy place;While the true heart pineth,Missing thy face.O\u27er the far blue mountain,O\u27er the white sea foam,Come thou long parted one,Come to thy home.Ah!Ah!Music is sorrowfulSince thou art gone,Sisters are mourning thee,Come to thine own.Hark! how lone voices callBack to thy rest,Come to thy Fathers hall,Thy Mothers breast.O\u27er the far blue mountain,O\u27er the white sea foam,Come thou long parted one,Come to thy home.Ah!Ah

    Grand Rounds: What\u27s in It for You?

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    Friction measuring apparatus Patent

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    Kinetic and static friction force measurement between magnetic tape and magnetic head surface

    Wind tunnel evaluation of YF-12 inlet response to internal airflow disturbances with and without control

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    The response of terminal-shock position and static pressures in the subsonic duct of a YF-12 aircraft flight-hardware inlet to perturbations in simulated engine corrected airflow were obtained with and without inlet control. Frequency response data, obtained with inlet controls inactive, indicated the general nature of the inherent inlet dynamics, assisted in the design of controls, and provided a baseline reference for responses with active controls. All the control laws were implemented by means of a digital computer that could be programmed to behave like the flight inlet's existing analog control. The experimental controls were designed using an analytical optimization technique. The capabilities of the controls were limited primarily by the actuation hardware. The experimental controls provided somewhat better attenuation of terminal shock excursions than did the YF-13 inlet control. Controls using both the forward and aft bypass systems also provided somewhat better attenuation than those using just the forward bypass. The main advantage of using both bypasses is in the greater control flexibility that is achieved

    Is Strangeness Still Strange at the LHC?

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    Strangeness production is calculated in a pQCD-based model (including nuclear effects) in the high transverse momentum sector, where pQCD is expected to work well. We investigate pion, kaon, proton and lambda production in pp and heavy-ion collisions. Parton energy loss in AA collisions is taken into account. We compare strange-to-non-strange meson and baryon ratios to data at RHIC, and make predictions for the LHC. We find that these ratios significantly deviate from unity not only at RHIC but also at the LHC, indicating the special role of strangeness at both energies.Comment: Contribution to SQM 2007, 6 pages 2 figure
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