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128 Matching Results
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Random and systematic field errors in the SNS ring: A study of their effects and compensation
The Accumulator Ring for the proposed Spallation Neutron Source (SNS) is to accept a 1 ms beam pulse from a 1 GeV Proton Linac at a repetition rate of 60 Hz. For each beam pulse, 10{sup 14} protons (some 1,000 turns) are to be accumulated via charge-exchange injection and then promptly extracted to an external target for the production of neutrons by spallation. At this very high intensity, stringent limits (less than two parts in 10,000 per pulse) on beam loss during accumulation must be imposed in order to keep activation of ring components at an acceptable level. To stay within the desired limit, the effects of random and systematic field errors in the ring require careful attention. This paper describes the studies of these effects and the magnetic corrector schemes for their compensation.
Date:
August 1998
Creator:
Gardner, C. J.; Lee, Y. Y. & Weng, W. T.
Object Type:
Article
System:
The UNT Digital Library
Fundamental Kinetics of Supercritical Coal Liquefaction: Effect of Catalysts and Hydrogen-Donor Solvents
This report outlines a distribution kinetics approach to macromolecular reactions that has been applied to several processes. The objective was to develop an understanding of high-temperature, dense-phase thermolytic processes for complex macromolecular systems, such as coal. Experiments and theory are described for chemical models that simulate depolymerization of coal. The approach has been exceptionally successful for the model macromolecular systems. Development of a novel chemical reaction engineering analysis, based on distribution kinetics, was a major accomplishment of the current research.
Date:
August 1, 1998
Creator:
McCoy, Benjamin J. & Smith, J. M.
Object Type:
Report
System:
The UNT Digital Library
SNS accumulator ring design and space charge considerations
The goal of the proposed Spallation Neutron Source (SNS) is to provide a short pulse proton beam of about 0.5 {micro}s with average beam power of 1 MW. To achieve such purpose, a proton storage ring operated at 60 Hz with 1 {times} 10{sup 14} protons per pulse at 1 GeV is required. The Accumulator Ring (AR) receives 1 msec long H{sup {minus}} beam bunches of 28 mA from a 1 GeV linac. Scope and design performance goals of the AR are presented. About 1,200 turns of charge exchange injection is needed to accumulate 1 mA in the ring. After a brief description of the lattice design and machine performance parameters, space charge related issues, such as: tune shifts, stopband corrections, halo generatino and beam collimation etc. is discussed.
Date:
August 1, 1998
Creator:
Weng, W. T.
Object Type:
Article
System:
The UNT Digital Library
The Clifton Record (Clifton, Tex.), Vol. 103, No. 65, Ed. 1 Friday, August 14, 1998
Semi-weekly newspaper from Clifton, Texas that includes local, state, and national news along with advertising.
Date:
August 14, 1998
Creator:
Smith, W. Leon
Object Type:
Newspaper
System:
The Portal to Texas History
Oak Ridge National Laboratory/Grand Junction field support for the Lasagna{trademark} technology demonstration
The Oak Ridge National Laboratory (ORNL) Environmental Technology Section (ETS) was tasked by the US Department of Energy EM-50 to provide field support for the Lasagna{trademark} Technology Demonstration from 1994 through 1997. The purpose of the Lasagna Technology Demonstration was to determine the effectiveness of using reductive dehalogenation to degrade trichloroethene (TCE) into its innocuous components. The purpose of this technical memorandum is to document the ORNL-ETS field effort, including results from samples analyzed using the ORNL-ETS field laboratory. The primary contribution from the ORNL-ETS field effort was the effectiveness of the field laboratory, which was found superior to standard methods since significant volatile losses occur during the transport of samples. The field laboratory is particularly effective on demonstration projects where large numbers of samples are collected. Data quality is evaluated by submitting a portion of samples to an analytical laboratory.
Date:
August 1, 1998
Creator:
Zutman, J.L. & Wilson-Nichols, M.J.
Object Type:
Report
System:
The UNT Digital Library
The Clifton Record (Clifton, Tex.), Vol. 103, No. 64, Ed. 1 Wednesday, August 12, 1998
Semi-weekly newspaper from Clifton, Texas that includes local, state, and national news along with advertising.
Date:
August 12, 1998
Creator:
Smith, W. Leon
Object Type:
Newspaper
System:
The Portal to Texas History
Cost and performance analysis of physical protection systems -- A case study
Design and analysis of physical protection systems requires (1) identification of mission critical assets; (2) identification of potential threats that might undermine mission capability; (3) identification of the consequences of loss of mission-critical assets (e.g., time and cost to recover required capability and impact on operational readiness); and (4) analysis of the effectiveness of physical protection elements. CPA -- Cost and Performance Analysis -- addresses the fourth of these four issues. CPA is a methodology that joins Activity Based Cost estimation with performance-based analysis of physical protection systems. CPA offers system managers an approach that supports both tactical decision making and strategic planning. Current exploratory applications of the CPA methodology address analysis of alternative conceptual designs. Hypothetical data is used to illustrate this process.
Date:
August 1, 1998
Creator:
Hicks, M. J.; Snell, M. S.; Sandoval, J. S. & Potter, C. S.
Object Type:
Article
System:
The UNT Digital Library
Savannah River Site Environmental Report for 1997-Data
This document presents data from Savannah River Site routine environmental monitoring and surveillance programs.
Date:
August 1, 1998
Creator:
Arnett, M. W. & Mamatey, A. R.
Object Type:
Report
System:
The UNT Digital Library
Savannah River Site Environmental Report for 1997
The mission at the Savannah River Site has changed from the production of nuclear weapons materials for national defense to the management of waste, restoration of the environment, and the development of industry in and around the site.
Date:
August 1, 1998
Creator:
Arnett, M. W. & Mamatey, A. R.
Object Type:
Report
System:
The UNT Digital Library
De Leon Free Press (De Leon, Tex.), Vol. 109, No. 7, Ed. 1 Thursday, August 13, 1998
Weekly newspaper from De Leon, Texas that includes local, state, and national news along with advertising.
Date:
August 13, 1998
Creator:
Wilkerson, Gayle E.
Object Type:
Newspaper
System:
The Portal to Texas History
Physical and Functional Characterization of the xy1XYZ Region From TOL Plasmid pDK1 and its Associated Downstream Regulatory Elements
The nucleotide sequence for the pDKl TOL plasmid region encoding toluate-1,2-dioxygenase (Xy1XYZ, TO) was determined. TO is the first enzyme in the meta-cleavage operon, responsible for the conversion of toluates and benzoates to their carboxy-substituted diols. DNA sequence analysis revealed the presence of three open reading frames (ORF). The three ORFs correspond to xylX (1353 bp), xylY (486 bp) and xylZ (1008 bp), encoding predicted protein products of 51370 Da, 19368 Da and 36256 Da, respectively.
Date:
August 1998
Creator:
Hares, Douglas R. (Douglas Ryan)
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Texas Parks & Wildlife, Volume 56, Number 8, August 1998
Magazine discussing natural resources, parks, hunting and fishing, and other information related to the outdoors in Texas.
Date:
August 1998
Creator:
Texas. Parks and Wildlife Department.
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
The Big Lake Wildcat (Big Lake, Tex.), Vol. SEVENTY-THIRD YEAR, No. 33, Ed. 1 Thursday, August 13, 1998
Weekly newspaper from Big Lake, Texas that includes local, state and national news along with advertising.
Date:
August 13, 1998
Creator:
Werst, David
Object Type:
Newspaper
System:
The Portal to Texas History
Stress in Parents of Children with ADHD vs Depression: a Multicultural Analysis
Parents of children with Attention Deficit Hyperactivity Disorder (ADHD) are often reported as experiencing more stress than parents of normal children. The bulk of this research has been conducted primarily on a Caucasian population, however, providing little information regarding multicultural aspects of parenting stress. Research has also been lacking in attention given to the stress related to parenting a child with internalizing disorders. The purpose of this study was 1) to compare parenting stress reported by mothers of children with ADHD to parenting stress reported by mothers of children with depressive disorders, and 2) to compare parenting stress as reported by Caucasian, African American, and Hispanic mothers. Results indicated that mothers of ADHD children experienced more parenting stress related only to their children's hyperactive and distracting behaviors. Contrary to previous research, Caucasian mothers reported significantly more overall and parent-related parenting stress than African American mothers.
Date:
August 1998
Creator:
Walker, Cyndi D. (Cyndi Dianne)
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Pawhuska Journal-Capital (Pawhuska, Okla.), Vol. 88, No. 66, Ed. 1 Saturday, August 15, 1998
Semiweekly newspaper from Pawhuska, Oklahoma that includes local, state, and national news along with advertising.
Date:
August 15, 1998
Creator:
Gann, Sherry
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 99, No. 128, Ed. 1 Wednesday, August 12, 1998
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
August 12, 1998
Creator:
Cole, Carol
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 99, No. 131, Ed. 1 Sunday, August 16, 1998
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
August 16, 1998
Creator:
Cole, Carol
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 99, No. 125, Ed. 1 Sunday, August 9, 1998
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
August 9, 1998
Creator:
Cole, Carol
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Pawhuska Journal-Capital (Pawhuska, Okla.), Vol. 88, No. 64, Ed. 1 Saturday, August 8, 1998
Semiweekly newspaper from Pawhuska, Oklahoma that includes local, state, and national news along with advertising.
Date:
August 8, 1998
Creator:
Gann, Sherry
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 99, No. 138, Ed. 1 Monday, August 24, 1998
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
August 24, 1998
Creator:
Cole, Carol
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 99, No. 122, Ed. 1 Tuesday, August 4, 1998
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
August 4, 1998
Creator:
Cole, Carol
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Juvenile Waiver to Adult Criminal Courts: a Prototypical Analysis of Dangerousness, Sophistication-Maturity, and Amenability to Treatment
Psychological assessment ofjuveniles being considered for waiver to adult criminal courts often requires systematic evaluation of dangerousness, maturity-sophistication, and amenability to treatment (ATX). Despite the importance of these constructs to the evaluation of juveniles, little is known about the criteria that constitute these three constructs. This study was designed to assist in clarifying the constructs of dangerousness, maturity-sophistication, and ATX that typically guide juvenile transfers. Generally, prototypicality ratings were aligned with the current literature on dangerousness, sophistication-maturity, and ATX.
Date:
August 1998
Creator:
Salekin, Randall T. (Randall Todd)
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Altus Times (Altus, Okla.), Vol. 99, No. 134, Ed. 1 Wednesday, August 19, 1998
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
August 19, 1998
Creator:
Cole, Carol
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 99, No. 130, Ed. 1 Friday, August 14, 1998
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
August 14, 1998
Creator:
Cole, Carol
Object Type:
Newspaper
System:
The Gateway to Oklahoma History