12,839 research outputs found

    Distribution of lactic acid between plasma and red cells during work and recovery

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    Lactic acid concentrations in plasma and red cells during work and recover

    Stellarator bootstrap current and plasma flow velocity at low collisionality

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    The bootstrap current and flow velocity of a low-collisionality stellarator plasma are calculated. As far as possible, the analysis is carried out in a uniform way across all low-collisionality regimes in general stellarator geometry, assuming only that the confinement is good enough that the plasma is approximately in local thermodynamic equilibrium. It is found that conventional expressions for the ion flow speed and bootstrap current in the low-collisionality limit are accurate only in the 1/ν1/\nu-collisionality regime and need to be modified in the ν\sqrt{\nu}-regime. The correction due to finite collisionality is also discussed and is found to scale as ν2/5\nu^{2/5}

    The effects of dehydration on the aerobic and anaerobic capacities of men, part IV FINAL scientific report

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    Dehydration effects on work capacity and aerobic capacities of me

    Part III - The effects of thermal stresses on the aerobic and anaerobic work capacities of men Final scientific report

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    Effects of hyperthermia and hypothermia on aerobic and anaerobic work capacities of me

    The importance of the classical channel in the impurity transport of optimized stellarators

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    In toroidal magnetic confinement devices, such as tokamaks and stellarators, neoclassical transport is usually an order of magnitude larger than its classical counterpart. However, when a high-collisionality species is present in a stellarator optimized for low Pfirsch-Schl\"uter current, its classical transport can be comparable to the neoclassical transport. In this letter, we compare neoclassical and classical fluxes and transport coefficients calculated for Wendelstein 7-X (W7-X) and Large Helical Device (LHD) cases. In W7-X, we find that the classical transport of a collisional impurity is comparable to the neoclassical transport for all radii, while it is negligible in the LHD cases, except in the vicinity of radii where the neoclassical transport changes sign. In the LHD case, electrostatic potential variations on the flux-surface significantly enhance the neoclassical impurity transport, while the classical transport is largely insensitive to this effect in the cases studied.Comment: 10 pages, 2 figure

    The Response to a Perturbation in the Reflection Amplitude

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    We apply inverse scattering theory to calculate the functional derivative of the potential V(x)V(x) and wave function ψ(x,k)\psi(x,k) of a one-dimensional Schr\"odinger operator with respect to the reflection amplitude r(k)r(k).Comment: 16 pages, no figure
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