27,020 research outputs found
Heat pipe with hot gas reservoir
Heat pipe can reverse itself with gas reservoir acting as evaporator, leading to rapid recovery from liquid in reservoir. Single layer of fine-mesh screen is included inside reservoir to assure uniform liquid distribution over hottest parts of internal surface until liquid is completely removed
Why the meson might be a difficult messenger for the restoration of chiral symmetry
We perform a theoretical analysis of the resonance mass spectrum in
ultra-relativistic heavy ion collisions within a hadron/string transport
approach. Predictions for the yield and its mass distribution are given
for the GSI-FAIR and the critRHIC energy regime. The potential of the
meson as a signal for chiral symmetry restoration is explored. In view of the
latest discussion, we investigate the decay channel in
detail and find a strong bias towards low masses. This apparent mass
shift of the if observed in the channel might render a
possible mass shift due to chiral symmetry restoration very difficult to
disentangle from the decay kinematics.Comment: 4 pages, 5 figure
Flat-plate heat pipe
Flat plate (vapor chamber) heat pipes were made by enclosing metal wicking between two capillary grooved flat panels. These heat pipes provide a unique configuration and have good capacity and conductance capabilities in zero gravity. When these flat plate vapor chamber heat pipes are heated or cooled, the surfaces are essentially isothermal, varying only 3 to 5 C over the panel surface
Semiclassical theory of spectral line shapes. II. Applications to CO, HCl, and OCS, broadened by inert gases
The semiclassical theory of spectral line broadening developed in the previous paper of this series is used to calculate the half‐widths and shifts of nonoverlapping rotational spectral lines of CO, HCl, and OCS, broadened by inert gases. Comparisons are made with the available experimental data and with related theoretical analyses, and reasonable agreement is obtained. The method used applies both to fairly quantum systems as well as to the relatively classical ones. A symmetrized semiclassical expression for Wigner 6‐j symbols is given and applied
The Commercial Music Industry in Atlanta and the State of Georgia: An Economic Impact Study
This study was prepared to ascertain the magnitude of the commercial music industry's economic impact on Atlanta and its surrounding areas. Report #8
Computer integration of hydrodynamics equations for heat pipes
Program has five operational modes that provide user flexibility in answering crucial heat-pipe design questions. User specifies heat input and rejection distribution
Subthreshold dynamics of a single neuron from a Hamiltonian perspective
We use Hamilton's equations of classical mechanics to investigate the behavior of a cortical neuron on the approach to an action potential. We use a two-component dynamic model of a single neuron, due to Wilson, with added noise inputs. We derive a Lagrangian for the system, from which we construct Hamilton's equations. The conjugate momenta are found to be linear combinations of the noise input to the system. We use this approach to consider theoretically and computationally the most likely manner in which such a modeled neuron approaches a firing event. We find that the firing of a neuron is a result of a drop in inhibition, due to a temporary increase in negative bias of the mean noise input to the inhibitory control equation. Moreover, we demonstrate through theory and simulation that, on average, the bias in the noise increases in an exponential manner on the approach to an action potential. In the Hamiltonian description, an action potential can therefore be considered a result of the exponential growth of the conjugate momenta variables pulling the system away from its equilibrium state, into a nonlinear regime
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