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The Baytown Sun (Baytown, Tex.), Vol. 81, No. 24, Ed. 1 Saturday, December 21, 2002
Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date:
December 21, 2002
Creator:
Cash, Wanda Garner
Object Type:
Newspaper
System:
The Portal to Texas History
Feasibility Study for a Recirculating Linac-Based Facility for Femtosecond Dynamics
LBNL is pursuing design studies and the scientific program for a facility dedicated to the production of x-ray pulses with ultra-short time duration, for application in dynamical studies of processes in physics, biology, and chemistry. The proposed x-ray facility has the short x-ray pulse length ({approx}60 fs FWHM) necessary to study very fast dynamics, high flux (up to approximately 10E11 photons/sec/0.1 percentBW) to study weakly scattering systems, and tuneability over 1-12 keV photon energy. The hard x-ray photon production section of the machine accommodates seven 2-m long undulators. Design studies for longer wavelength sources, using high-gain harmonic generation, are in progress. The x-ray pulse repetition rate of 10 kHz is matched to studies of dynamical processes (initiated by ultra-short laser pulses) that typically have a long recovery time or are not generally cyclic or reversible and need time to allow relaxation, replacement, or flow of the sample. The technique for producing ultra-short x-ray pulses uses relatively long electron bunches to minimize high-peak-current collective effects, and the ultimate x-ray duration is achieved by a combination of bunch manipulation and optical compression. Synchronization of x-ray pulses to sample excitation signals is expected to be of order 50 - 100 fs. Techniques for …
Date:
December 21, 2002
Creator:
Corlett, J. N.; Barry, W.; Barletta, W. A.; Byrd, J. M.; DeSantis, S.; Doolittle, L. et al.
Object Type:
Report
System:
The UNT Digital Library
[Kleinert Building Photograph #2]
Photograph of the Kleinert Building in Bastrop, Texas.
Date:
December 21, 2002
Creator:
unknown
Object Type:
Photograph
System:
The Portal to Texas History
[Kleinert Building Photograph #3]
Photograph of the Kleinert Building in Bastrop, Texas.
Date:
December 21, 2002
Creator:
unknown
Object Type:
Photograph
System:
The Portal to Texas History
[Kleinert Building Photograph #5]
Photograph of the Kleinert Building in Bastrop, Texas.
Date:
December 21, 2002
Creator:
unknown
Object Type:
Photograph
System:
The Portal to Texas History
[Kleinert Building Photograph #14]
Photograph of the Kleinert Building in Bastrop, Texas.
Date:
December 21, 2002
Creator:
unknown
Object Type:
Photograph
System:
The Portal to Texas History
[Kleinert Building Photograph #15]
Photograph of the Kleinert Building in Bastrop, Texas.
Date:
December 21, 2002
Creator:
unknown
Object Type:
Photograph
System:
The Portal to Texas History
[Kleinert Building Photograph #16]
Photograph of the Kleinert Building in Bastrop, Texas.
Date:
December 21, 2002
Creator:
unknown
Object Type:
Photograph
System:
The Portal to Texas History
[Kleinert Building Photograph #17]
Photograph of the Kleinert Building in Bastrop, Texas.
Date:
December 21, 2002
Creator:
unknown
Object Type:
Photograph
System:
The Portal to Texas History
[Kleinert Building Photograph #18]
Photograph of the Kleinert Building in Bastrop, Texas.
Date:
December 21, 2002
Creator:
unknown
Object Type:
Photograph
System:
The Portal to Texas History
Radiation-Induced Topological Disorder in Irradiated Network Structures
This report summarizes results of a research program investigating the fundamental principles underlying the phenomenon of topological disordering in a radiation environment. This phenomenon is known popularly as amorphization, but is more formally described as a process of radiation-induced structural arrangement that leads in crystals to loss of long-range translational and orientational correlations and in glasses to analogous alteration of connectivity topologies. The program focus has been on a set compound ceramic solids with directed bonding exhibiting structures that can be described as networks. Such solids include SiO2, Si3N4, SiC, which are of interest to applications in fusion energy production, nuclear waste storage, and device manufacture involving ion implantation or use in radiation fields. The principal investigative tools comprise a combination of experimental diffraction-based techniques, topological modeling, and molecular-dynamics simulations that have proven a rich source of information in the preceding support period. The results from the present support period fall into three task areas. The first comprises enumeration of the rigidity constraints applying to (1) more complex ceramic structures (such as rutile, corundum, spinel and olivine structures) that exhibit multiply polytopic coordination units or multiple modes of connecting such units, (2) elemental solids (such as graphite, silicon and diamond) …
Date:
December 21, 2002
Creator:
Hobbs, Linn W.
Object Type:
Report
System:
The UNT Digital Library
Relationship of adiposity to the population distribution of plasma triglyceride concentrations in vigorously active men and women
Context and Objective: Vigorous exercise, alcohol and weight loss are all known to increase HDL-cholesterol, however, it is not known whether these interventions raise low HDL as effectively as has been demonstrated for normal HDL. Design: Physician-supplied medical data from 7,288 male and 2,359 female runners were divided into five strata according to their self-reported usual running distance, reported alcohol intake, body mass index (BMI) or waist circumference. Within each stratum, the 5th, 10th, 25th, 50th, 75th, 90th, and 95th percentiles for HDL-cholesterol were then determined. Bootstrap resampling of least-squares regression was applied to determine the cross-sectional relationships between these factors and each percentile of the HDL-cholesterol distribution. Results: In both sexes, the rise in HDL-cholesterol per unit of vigorous exercise or alcohol intake was at least twice as great at the 95th percentile as at the 5th percentile of the HDL-distribution. There was also a significant graded increase in the slopes relating exercise (km run) and alcohol intake to HDL between the 5th and the 95th percentile. Men's HDL-cholesterol decreased in association with fatness (BMI and waist circumference) more sharply at the 95th than at the 5th percentile of the HDL-distribution. Conclusions: Although exercise, alcohol and adiposity were all …
Date:
December 21, 2002
Creator:
Williams, Paul T.
Object Type:
Article
System:
The UNT Digital Library
The Albany News (Albany, Tex.), Vol. 127, No. 25, Ed. 1 Thursday, November 21, 2002
Weekly newspaper from Albany, Texas that includes local, county, and state news along with extensive advertising.
Date:
November 21, 2002
Creator:
Lucas, Melinda L.
Object Type:
Newspaper
System:
The Portal to Texas History
Altus Times (Altus, Okla.), Vol. 104, No. 211, Ed. 1 Thursday, November 21, 2002
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
November 21, 2002
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Appropriations for FY2003: VA, HUD, and Independent Agencies
Appropriations are one part of a complex federal budget process that includes budget resolutions, appropriations (regular, supplemental, and continuing) bills, rescissions, and budget reconciliation bills. This Report is a guide to one of the 13 regular appropriations bills that Congress passes each year. It is designed to supplement the information provided by the House and Senate Appropriations Subcommittee on VA, HUD, and Independent Agencies.
Date:
November 21, 2002
Creator:
Snook, Dennis W. & Bourdon, E. Richard
Object Type:
Report
System:
The UNT Digital Library
Archer County News (Archer City, Tex.), No. 47, Ed. 1 Thursday, November 21, 2002
Weekly newspaper from Archer City, Texas that includes local, state, and national news along with advertising.
Date:
November 21, 2002
Creator:
Lewis, Shelley
Object Type:
Newspaper
System:
The Portal to Texas History
The Baytown Sun (Baytown, Tex.), Vol. 80, No. 360, Ed. 1 Thursday, November 21, 2002
Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date:
November 21, 2002
Creator:
Cash, Wanda Garner
Object Type:
Newspaper
System:
The Portal to Texas History
Betatron motion with coupling of horizontal and vertical degrees of freedom
The Courant-Snyder parameterization of one-dimensional linear betatron motion is generalized to two-dimensional coupled linear motion. To represent the 4 x 4 symplectic transfer matrix the following ten parameters were chosen: four beta-functions, four alpha-functions and two betatron phase advances which have a meaning similar to the Courant-Snyder parameterization. Such a parameterization works equally well for weak and strong coupling and can be useful for analysis of coupled betatron motion in circular accelerators as well as in transfer lines. Similarly, the transfer matrix, the bilinear form describing the phase space ellipsoid and the second order moments are related to the eigen-vectors. Corresponding equations can be useful in interpreting tracking results and experimental data.
Date:
November 21, 2002
Creator:
Bogacz, S. A. & Lebedev, V. A.
Object Type:
Article
System:
The UNT Digital Library
Bogata News (Bogata, Tex.), Vol. 92, No. 24, Ed. 1 Thursday, November 21, 2002
Weekly newspaper from Bogata, Texas that includes local, state, and national news along with advertising.
Date:
November 21, 2002
Creator:
Nichols, Nanalee & Nichols, Thomas
Object Type:
Newspaper
System:
The Portal to Texas History
The Canadian Record (Canadian, Tex.), Vol. 112, No. 47, Ed. 1 Thursday, November 21, 2002
Weekly newspaper from Canadian, Texas that includes local, state and national news along with some advertising.
Date:
November 21, 2002
Creator:
Ezzell, Nancy & Brown, Laurie Ezzell
Object Type:
Newspaper
System:
The Portal to Texas History
China-U.S. Relations
This report discusses the background information and most recent development in U.S.-China relations since mid-1996. Since the early 1990s, U.S.-China relations have followed an uneven course, with modest improvements overshadowed by various recurring difficulties and setbacks. Longstanding bilateral difficulties have included U.S. problems with the PRC’s worsening human rights record, growing tensions over the PRC’s southern military build-up opposite Taiwan and Taiwan’s political status, and continued controversy over allegations of Chinese proliferation of weapons to unstable regimes.
Date:
November 21, 2002
Creator:
Dumbaugh, Kerry
Object Type:
Report
System:
The UNT Digital Library
Comanche Chief (Comanche, Tex.), No. 29, Ed. 1 Thursday, November 21, 2002
Weekly newspaper from Comanche, Texas that includes local, state, and national news along with advertising.
Date:
November 21, 2002
Creator:
Wilkerson, James C., III
Object Type:
Newspaper
System:
The Portal to Texas History
The control architecture of the D0 experiment
From a controls viewpoint, contemporary high energy physics collider detectors are comparable in complexity to small to medium size accelerators: however, their controls requirements often differ significantly. D0, one of two collider experiments at Fermilab, has recently started a second, extended running period that will continue for the next five years. EPICS [1], an integrated set of software building blocks for implementing a distributed control system, has been adapted to satisfy the slow controls needs of the D0 detector by (1) extending the support for new device types and an additional field bus, (2) by the addition of a global event reporting system that augments the existing EPICS alarm support, and (3) by the addition of a centralized database with supporting tools for defining the configuration of the control system. This paper discusses the control architecture of the current D0 experiment, how the EPICS system was extended to meet the control requirements of a large, high-energy physics detector, and how a formal control system contributes to the management of detector operations.
Date:
November 21, 2002
Creator:
al., J. Fredrick Bartlett et
Object Type:
Article
System:
The UNT Digital Library
Cooper Review (Cooper, Tex.), Vol. 122, No. 47, Ed. 1 Thursday, November 21, 2002
Weekly newspaper from Cooper, Texas that includes local, state, and national news along with advertising.
Date:
November 21, 2002
Creator:
Pinson, Beth
Object Type:
Newspaper
System:
The Portal to Texas History