Search Results

open access

Search for b0(s) --> mu+ mu- and b0(d) --> mu+ mu- decays in p anti-p collisions at s**(1/2) = 1.96 tev

Description: The authors report on a search for B{sub s}{sup 0} {yields} {mu}{sup +}{mu}{sup -} and B{sub d}{sup 0} {yields} {mu}{sup +}{mu}{sup -} decays in p{bar p} collisions at {radical}s = 1.96 TeV using 171 pb{sup -1} of data collected by the CDF II experiment at the Fermilab Tevatron Collider. The decay rates of these rare processes are sensitive to contributions from physics beyond the Standard Model. One event survives all the selection requirements, consistent with the background expectation. They… more
Date: March 20, 2004
Creator: Acosta, D.
Partner: UNT Libraries Government Documents Department
open access

Extraction of macro-molecule images in cryo-EM micrographs

Description: Advances in Electron Microscopy and single-particle reconstruction have led to results at increasingly high resolutions. This has opened up the possibility of complete automation of single particle reconstruction. Main bottleneck in automation of single particle reconstruction is manual selection of particles in the micrograph. This paper describes a simple but efficient approach for segmentation of particle projections in the micrographs obtained using cryo-electron microscope. Changing the sh… more
Date: March 20, 2003
Creator: Adiga, Umesha P.S.; Malladi, Ravi & Glaeser, Robert M.
Partner: UNT Libraries Government Documents Department
open access

Finite Cosmology and a CMB Cold Spot

Description: The standard cosmological model posits a spatially flat universe of infinite extent. However, no observation, even in principle, could verify that the matter extends to infinity. In this work we model the universe as a finite spherical ball of dust and dark energy, and obtain a lower limit estimate of its mass and present size: the mass is at least 5 x 10{sup 23}M{sub {circle_dot}} and the present radius is at least 50 Gly. If we are not too far from the dust-ball edge we might expect to see a … more
Date: March 20, 2006
Creator: Adler, R. J.; Bjorken, J. D. & Overduin, J.M.
Partner: UNT Libraries Government Documents Department
open access

Trade and the Americas

Description: No Description Available.
Date: March 20, 2003
Creator: Ahearn, Raymond J.
Partner: UNT Libraries Government Documents Department
open access

Zircex Fluoride Volatility Combination

Description: In using the Zircex Process head-end to recover Zr from fuel elements before recovery of U by fluoride volatility, loss of U as UCl/sub 4/ is a problem. The suitability of using a Ni wire filter for trapping entrained UCl/sub 4/, and recovery of the trapped U by direct fluorination of filter and residue is investigated. It is recommended from these studies that water vapor and oxygen should be kept out of the reactor, and that the filter and filter material should be further investigated. (T.R.… more
Date: March 20, 1958
Creator: Ammann, P. R.; Madden, D. A. & Swift, D. L.
Partner: UNT Libraries Government Documents Department
open access

Customer Satisfaction Assessment at the Pacific Northwest National Laboratory

Description: The Pacific Northwest National Laboratory (PNNL) is developing and implementing a customer satisfaction assessment program (CSAP) to assess the quality of research and development provided by the laboratory. We present the customer survey component of the PNNL CSAP. The customer survey questionnaire is composed of 2 major sections, Strategic Value and Project Performance. The Strategic Value section of the questionnaire consists of 5 questions that can be answered with a 5 point Likert scale re… more
Date: March 20, 2000
Creator: Anderson, Dale N. & Sours, Mardell L.
Partner: UNT Libraries Government Documents Department
open access

Coming to Washington, D.C.? Sources of Information on Temporary Housing

Description: This report will introduce a newcomer to the Washington, D.C., metropolitan area to sources of general interest, neighborhoods, housing, and public transportation. The intended audience is congressional staff needing short-term or summer housing, although many of the sources given may also be helpful for those needing more than a three- to six-month lease. Sources suggested are often accessible by their Internet addresses.
Date: March 20, 2003
Creator: Anderson, J. Michael
Partner: UNT Libraries Government Documents Department
open access

COAL/POLYMER COPROCESSING WITH EFFICIENT USE OF HYDROGEN

Description: Inadequacies of current recovery and disposal methods for mixed plastic wastes drive the exploration of viable strategies for plastics resource recovery. The combination of diminishing landfill space and increasing usage of plastic products poses a significant dilemma, since current recovery methods are costly and ill-suited to handle contaminants. Coprocessing of polymeric waste with other materials may provide potential solutions to the deficiencies of current resource recovery methods, inclu… more
Date: March 20, 1998
Creator: BROADBELT, DR. LINDA J. & WITT, MATTHEW J. DE
Partner: UNT Libraries Government Documents Department
open access

COAL/POLYMER COPROCESSING WITH EFFICIENT USE OF HYDROGEN

Description: Environmental and economical concerns over diminishing landfill space and the growing abundance of mixed plastic waste mandate development of viable strategies for recovering high-valued resources from waste polymers. Co-processing of waste polymer mixtures with coal allows for the simultaneous conversion of coal and plastics into high-valued fuels. However, there is limited information about the underlying reaction pathways, kinetics, and mechanisms controlling coal liquefaction in the presenc… more
Date: March 20, 1997
Creator: BROADBELT, DR. LINDA J. & WITT, MATTHEW J. DE
Partner: UNT Libraries Government Documents Department
open access

Short Pulse Laser Production of Diamond Thin Films

Description: The use of diamond thin films has the potential for major impact in many industrial and scientific applications. These include heat sinks for electronics, broadband optical sensors, windows, cutting tools, optical coatings, laser diodes, cold cathodes, and field emission displays. Attractive properties of natural diamond consist of physical hardness, high tensile yield strength, chemical inertness, low coefficient of friction, high thermal conductivity, and low electrical conductivity. Unfortun… more
Date: March 20, 1998
Creator: Banks, P. S.; Stuart, B. C.; Dinh, L.; Feit, M. D.; Rubenchik, A. M.; McLean, W. et al.
Partner: UNT Libraries Government Documents Department
open access

DATA FOR ELEMENTARY-PARTICLE PHYSICS

Description: S>Tables of elementary-particle data in easily accessible form are presented for researchers in highenergy physics. Included are: The Masses used Mean Lives of the Elementary Particles; Atomic and Nuclear Properties of Materials; Particle Scattering; atomic and Nuclear Constants; and Particle Decay and Reaction Dynamics. (T.R.H.)
Date: March 20, 1958
Creator: Barkas, W.H. & Rosenfeld, A.H.
Partner: UNT Libraries Government Documents Department
open access

A Simplified Method of Elastic-Stability Analysis for Thin Cylindrical Shells

Description: "This paper develops a new method for determining the buckling stresses of cylindrical shells under various loading conditions. In part I, the equation for the equilibrium of cylindrical shells introduced by Donnell in NACA report no. 479 to find the critical stresses of cylinders in torsion is applied to find critical stresses for cylinders with simply supported edges under other loading conditions. In part II, a modified form of Donnell's equation for the equilibrium of thin cylindrical shell… more
Date: March 20, 1947
Creator: Batdorf, S. B.
Partner: UNT Libraries Government Documents Department
open access

Critical Stress of Thin-Walled Cylinders in Axial Compression

Description: Empirical design curves are presented for the critical stress of thin-wall cylinders loaded in axial compression. These curves are plotted in terms of the nondimensional parameters of small-deflection theory and are compared with theoretical curves derived for the buckling of cylinders with simply supported and clamped edges. An empirical equation is given for the buckling of cylinders having a length-radius ratio greater than about 0.75.
Date: March 20, 1947
Creator: Batdorf, S. B.; Schildcrout, Murry & Stein, Manuel
Partner: UNT Libraries Government Documents Department
open access

Seismic Evaluation of Hydrocarbon Saturation in Deep-Water Reservoirs

Description: The ''Seismic Evaluation of Hydrocarbon Saturation in Deep-Water Reservoirs'' (Grant/Cooperative Agreement DE-FC26-02NT15342) began September 1, 2002. During this second quarter: A Direct Hydrocarbon Indicator (DHI) symposium was held at UH; Current DHI methods were presented and forecasts made on future techniques; Dr. Han moved his laboratory from HARC to the University of Houston; Subcontracts were re-initiated with UH and TAMU; Theoretical and numerical modeling work began at TAMU; Geophysi… more
Date: March 20, 2003
Creator: Batzle, M.; Han, D-h; Gibson, R. & Djordjevic, O.
Partner: UNT Libraries Government Documents Department
open access

Analysis of deposit from K-Reactor heat exchanger 4A

Description: Characterization of deposits from the reactor system provides a means of directly assessing corrosion and chemistry conditions within the system. The recent analysis of debris vacuumed from the bottom of K-Reactor tank provided information and reassurance about the conditions within the tank that would affect corrosion or moderator chemistry. Further opportunity for surveillance within the reactor system was recognized when solid deposits were found on the moderator side of the K-Reactor heat e… more
Date: March 20, 1992
Creator: Baumann, E. W.
Partner: UNT Libraries Government Documents Department
open access

Analysis of deposit from K-Reactor heat exchanger 4A. Revision 1

Description: Characterization of deposits from the reactor system provides a means of directly assessing corrosion and chemistry conditions within the system. The recent analysis of debris vacuumed from the bottom of K-Reactor tank provided information and reassurance about the conditions within the tank that would affect corrosion or moderator chemistry. Further opportunity for surveillance within the reactor system was recognized when solid deposits were found on the moderator side of the K-Reactor heat e… more
Date: March 20, 1992
Creator: Baumann, E. W.
Partner: UNT Libraries Government Documents Department
open access

State Children’s Health Insurance Program: An Overview

Description: This report describes the basic elements of CHIP, focusing on how the program is designed, who is eligible, what services are covered, how enrollees share in the cost of care, and how the program is financed. The report ends with a brief discussion of the future of CHIP.
Date: March 20, 2015
Creator: Baumrucker, Evelyne P. & Mitchell, Alison
Partner: UNT Libraries Government Documents Department
open access

Country-of-Origin Labeling for Foods

Description: This report briefly discusses the USDA's FY2006 appropriation, which postpones rules requiring many retailers to provide country-of-origin labeling (COOL) for fresh produce, red meats, and peanuts until September 30, 2008. The report also discusses related legislation.
Date: March 20, 2006
Creator: Becker, Geoffrey S.
Partner: UNT Libraries Government Documents Department
open access

Space Launch Vehicles: Government Activities, Commercial Competition, and Satellite Exports

Description: This report various sides of the debate related to domestic launch services, such as satellite export issues, the development of new launch vehicles by the private sector, and whether tax incentives or loan guarantees should be created for companies attempting to develop lower-cost launch vehicles.
Date: March 20, 2006
Creator: Behrens, Carl E.
Partner: UNT Libraries Government Documents Department
Back to Top of Screen