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Nucleosynthesis in a baryon-inhomogeneous universe with coupled baryon diffusion

Description: Detailed calculations of big-bang nucleosynthesis in baryon-inhomogeneous universes show that {Omega}{sub b} can be considerably larger than its limit from standard big-bang nucleosynthesis. Such results require that late-time hydrodynamic effects deplete overproduction of {sup 7}Li and that the QCD surface tension be near the cube of the QCD coexistence temperature for fluctuations of the correct length scales to arise. 15 refs., 1 fig.
Date: August 2, 1990
Creator: Meyer, B.S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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The energy stabilization for the SLC scavenger beam

Description: The energy of the SLC scavenger beam which is used to produce positrons must be carefully maintained so that the beam can be transported through the collimators in the dispersive region of the extraction line which leads from the Linac to the positron target. A feedforward control loop has been developed to compensate the energy fluctuations due to the beam intensity fluctuations. The loop detects the beam intensities in the damping rings and then calculates how much energy needs to be compensa… more
Date: August 1, 1990
Creator: Hsu, Ian; Browne, M.; Himel, T.; Humphrey, R.; Jobe, K.; Ross, M. et al.
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Partner: UNT Libraries Government Documents Department
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Global climate feedbacks: Conclusions and recommendations of the June 1990 BNL workshop

Description: The issue of global change initiated by increases in the concentrations of CO{sub 2} and other greenhouse gases is a scientific issue with major policy implications. The best means to examine the response of the Earth's climate to prospective perturbations in radiative forcing caused by such changes, and to other industrial activities, is modeling, specifically by means of general circulation models (GCMs) of the Earth's atmosphere and of the coupled atmosphere-ocean system. The purpose of this… more
Date: August 1, 1990
Creator: Manowitz, B.
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Partner: UNT Libraries Government Documents Department
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Influences of atmospheric conditions and air mass on the ratio of ultraviolet to total solar radiation

Description: The technology to detoxify hazardous wastes using ultraviolet (UV) solar radiation is being investigated by the DOE/SERI Solar Thermal Technology Program. One of the elements of the technology evaluation is the assessment and characterization of UV solar radiation resources available for detoxification processes. This report describes the major atmospheric variables that determine the amount of UV solar radiation at the earth's surface, and how the ratio of UV-to-total solar radiation vari… more
Date: August 1, 1990
Creator: Riordan, C.J.; Hulstrom, R.L. & Myers, D.R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Japanese power electronics inverter technology and its impact on the American air conditioning industry

Description: Since 1983, technological advances and market growth of inverter- driven variable-speed heat pumps in Japan have been dramatic. The high level of market penetration was promoted by a combination of political, economic, and trade policies in Japan. A unique environment was created in which the leading domestic industries-- microprocessor manufacturing, compressors for air conditioning and refrigerators, and power electronic devices--were able to direct the development and market success of inver… more
Date: August 1, 1990
Creator: Ushimaru, Kenji.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Natural Current Profiles in a Tokamak

Description: In this paper I show how one may arrive at a universal, or natural, family of Tokamak profiles using only accepted physical principles. These particular profiles are similar to ones proposed previously on the basis of ad hoc variational principles and the point of the present paper is to provide a justification for them. However in addition, the present work provides an interesting view of Tokamak fluctuations and leads to a new result -- a relationship between the inward particle pinch velocit… more
Date: August 1, 1990
Creator: Taylor, J. B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Scattering by anisotropic grains in beryllium mirrors

Description: Scattering from mirror surfaces arises from topographic and non-topographic sources. This paper considers the nontopographic scattering of beryllium mirrors modelled as a collection of randomly oriented bireflective grains. Simple scattering theory shows that this type of scatting scales as {lambda}{sup {minus}2}, rather than as {lambda}{sup {minus}4} for topographic scattering, which means that it is relatively more important at long radiation wavelengths. Estimates of the intensity based an a… more
Date: August 1, 1990
Creator: Church, E.L. (Army Armament Research and Development Command, Dover, NJ (USA)); Takacs, P.Z. (Brookhaven National Lab., Upton, NY (USA)) & Stover, J.C. (TMA Technologies, Inc., Bozeman, MT (USA))
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Partner: UNT Libraries Government Documents Department
open access

Simulation of seasonal cloud forcing anomalies

Description: One useful way to classify clouds is according to the processes that generate them. There are three main cloud-formation agencies: deep convection; surface evaporation; large-scale lifting in the absence of conditional instability. Although traditionally clouds have been viewed as influencing the atmospheric general circulation primarily through the release of latent heat, the atmospheric science literature contains abundant evidence that, in reality, clouds influence the general circulation th… more
Date: August 1990
Creator: Randall, D. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Simulation of seasonal cloud forcing anomalies

Description: One useful way to classify clouds is according to the processes that generate them. There are three main cloud-formation agencies: deep convection; surface evaporation; large-scale lifting in the absence of conditional instability. Although traditionally clouds have been viewed as influencing the atmospheric general circulation primarily through the release of latent heat, the atmospheric science literature contains abundant evidence that, in reality, clouds influence the general circulation th… more
Date: August 1990
Creator: Randall, D. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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