134,239 research outputs found
Rechargeable, silver-zinc battery conditioner/monitor unit and state-of-charge indicator
Unit automatically charges batteries to desired state-of-charge levels, monitors functional battery parameter data both on meters and printer, and automatically activates alarm in event of battery malfunctions. Unit consists of state-of-charge indicator panel, control panel, monitor panel, power panel, charging-current power supply, and load panel
Nonleptonic Weak Decays of B to D_s and D mesons
Branching ratios and polarization amplitudes for B decaying to all allowed
pseudoscalar, vector, axial-vector, scalar and tensor combinations of D_s and D
mesons are calculated in the Isgur Scora Grinstein Wise (ISGW) quark model
after assuming factorization. We find good agreement with other models in the
literature and the limited experimental data and make predictions for as yet
unseen decay modes. Lattice QCD results in this area are very limited. We make
phenomenological observations on decays in to D_s(2317) and D_s(2460) and
propose tests for determining the status and mixings of the axial mesons. We
use the same approach to calculate branching ratios and polarization fraction
for decays in to two D type mesons.Comment: 21 pages, 9 figures. v3: updated to reflect changes in published
paper, conclusions unchanged (see source file for details). Added comments on
factorization. v2: experimental data updated, references added, tables of
results added, more on axial D_s mixing, added section on D D decay modes and
typos correcte
An Economic Analysis of Fluid Milk Processing in Alaska
Alaskan fluid milk is processed for market by a two-firm industry.
In Delta Junction, the Northern Lights Dairy obtains milk from two
producers and services an Interior market from Delta to Fairbanks. In
Anchorage , Matanuska Maid (M-M) obtains milk from II producers
and markets its products largely in southcentral Alaska and , to a less
extent, in Fairbanks. Direct competition between the two is minimal.
The principal source of competition is preprocessed fluid milk shipped
in from Puget Sound
Exclusive pi^+ production at HERMES
Hard exclusive production in deep inelastic lepton scattering provides access
to the unknown Generalized Parton Distributions (GPDs) of the nucleon. At
HERMES, different observables for hard exclusive pi^+ production have been
measured with a 27.6 GeV positron beam on an internal hydrogen gas target.
First preliminary results for the unpolarized ep->enpi^+ total cross section
for 1.5<Q^2<10.5 GeV^2 and for 0.02<x<0.8 are presented and compared to GPD
calculations. The final result for the single-spin asymmetry using a
longitudinal polarized target is also reported.Comment: 5 pages, 3 figures, contribution to the XII International Workshop on
Deep Inelastic Scattering, April 14-18, 2004, Strbske Pleso, Slovaki
Prediction of gas leakage of environmental control systems
Mathematical models of leakage configurations and various flow theories are presented with the substantive experimental test data to provide background material for future design and failure analysis. Normal-rate leakage and emergency, high-rate leakage are considered
Insecta Mundi: procedures, production, and publication
This article outlines changes in procedures and production policies for the journal Insecta Mundi. Background data and discussions leading to these necessary changes are explained. Updated instructions for authors are presented. A full current version of author instructions will be posted on the latest Center for Systematic Entomology URL
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