23,411 research outputs found
Flowmeter measures low gas-flow rates
Positive-displacement flowmeter measures low gas-flow rates by gaging the time required for a slug of mercury to pass between two reference levels in a tube of known volume
Gas flowmeter
Mass flowmeter measures rates of flow of all common gases from purges and collected leaks at leak ports. Without dependence on gravity, it measures rates between 5 and 650 cc/min with pressures ranging from 0.001 to 10 to the minus thirteenth torr at temperatures between 70 and 500 degrees K
Determining gas leakage from bubble formations
Gas leakage rates are quantitatively estimated using threaded and flanged fittings by standardizing bubble appearance. Three classes of bubble formations have been proposed
ASSESSMENT OF THE PRICE IMPACT OF THE SOUTH CAROLINA CUCUMBER MARKETING ORDER
Demand and Price Analysis,
Phenomenological consequences of supersymmetry with anomaly-induced masses
In the supersymmetric standard model there exist pure gravity contributions
to the soft mass parameters which arise via the superconformal anomaly. We
consider the low-energy phenomenology with a mass spectrum dominated by the
anomaly-induced contributions. In a well-defined minimal model we calculate
electroweak symmetry breaking parameters, scalar masses, and the full one-loop
splitting of the degenerate Wino states. The most distinctive features are
gaugino masses proportional to the corresponding gauge coupling beta-functions,
the possibility of a Wino as the lightest supersymmetric particle, mass
degeneracy of sleptons, and a very massive gravitino. Unique signatures at
high-energy colliders include dilepton and single lepton final states,
accompanied by missing energy and displaced vertices. We also point out that
this scenario has the cosmological advantage of ameliorating the gravitino
problem. Finally, the primordial gravitino decay can produce a relic density of
Wino particles close to the critical value.Comment: 26 pages, 7 figures, LaTe
Water system virus detection
The performance of a waste water reclamation system is monitored by introducing a non-pathogenic marker virus, bacteriophage F2, into the waste-water prior to treatment and, thereafter, testing the reclaimed water for the presence of the marker virus. A test sample is first concentrated by absorbing any marker virus onto a cellulose acetate filter in the presence of a trivalent cation at low pH and then flushing the filter with a limited quantity of a glycine buffer solution to desorb any marker virus present on the filter. Photo-optical detection of indirect passive immune agglutination by polystyrene beads indicates the performance of the water reclamation system in removing the marker virus. A closed system provides for concentrating any marker virus, initiating and monitoring the passive immune agglutination reaction, and then flushing the system to prepare for another sample
The Invisible Higgs Decay Width in the Add Model at the LHC
Assuming flat universal extra dimensions, we demonstrate that for a light
Higgs boson the process will be observable at the level at the LHC for the
portion of the Higgs-graviscalar mixing () and effective Planck mass
() parameter space where channels relying on visible Higgs decays fail to
achieve a signal. Further, we show that even for very modest values
of the invisible decay signal probes to higher than does the
(-independent) jets/\gam + missing energy signal from graviton
radiation. We also discuss various effects, such as Higgs decay to two
graviscalars, that could become important when is of order 1.Comment: 6 pages, 2 figures, To appear in the Proceedings of the Les Houches
Workshop 2003: ``Physics at TeV Colliders'', ed. F. Boudjem
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