123,875 research outputs found

    Venting vapor apparatus Patent

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    Fuel tank pressure-relief device for venting cryogenic liquid vapors through tubes with porous plu

    Human Death as Neocortical Death: The Ethical Context

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    Proton Spin Based On Chiral Dynamics

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    Chiral spin fraction models agree with the proton spin data only when the chiral quark-Goldstone boson couplings are pure spinflip. For axial-vector coupling from soft-pion physics this is true for massless quarks but not for constituent quarks. Axial-vector quark-Goldstone boson couplings with {\bf constituent} quarks are found to be inconsistent with the proton spin data.Comment: 8 pages, Latex, 1 table, no figure

    Single connector provides safety fuses for multiple lines

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    Fuse-bearing sleeve which is inserted between the male and female members of a multiple-line connector contains a safety fuse for each pin of the connector assembly. The sleeve is easily and quickly opened for fuse replacement

    Fused switch

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    An electric switch device is described which can be used safely even in an explosive environment. The switch has an operating arm, and a moveable actuator which is engaged by the arm and moved between a number of positions in which the arm opens or closes the switch. A fuse is slidably positioned in a passage through the actuator. The fuse can be replaced in the passage by another fuse when the actuator is in one of its many positions. The device is lightweight and compact, is capable of withstanding severe shock, and is not adversely affected by extremes of temperature

    Loop Expansion in Light-Cone ϕ4\phi^4 Field Theory

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    A loop expansion is implemented based on the path integral quantization of the light-cone ϕ4\phi^4 field theory in 1+1 dimensions. The effective potential as a function of the zero-mode field ω\omega is calculated up to two loop order and its derivative with respect to ω\omega is used to determine the vacuum expectation value of the field ϕ\phi. The critical coupling constant at the spontaneous symmetry breakdown is consistent with that obtained in the ordinary instant-form field theory. The critical exponents which describe the behavior of the susceptibility and the vacuum expectation value of ϕ\phi near the critical point are evaluated from the effective potential. The one loop diagrams for the connected Green's function are calculated in momentum space. The relevant equal-time correlation function is shown to be closely related.Comment: 12 pages, plain Tex, 1 table, 3 figures available from [email protected] , accepted by Phys. Rev.
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