Covariances of evaluated nuclear data based upon uncertainty information of experimental data and nuclear models (open access)

Covariances of evaluated nuclear data based upon uncertainty information of experimental data and nuclear models

A straightforward derivation is presented for the covariance matrix of evaluated cross sections based on the covariance matrix of the experimental data and propagation through nuclear model parameters. 10 refs.
Date: November 17, 1986
Creator: Poenitz, W. P. & Peelle, R. W.
Object Type: Article
System: The UNT Digital Library
Feed Materials Production Center. Final phase-in report volume 1 of 15 operations and maintenance, October 25, 1985--December 31, 1985 (open access)

Feed Materials Production Center. Final phase-in report volume 1 of 15 operations and maintenance, October 25, 1985--December 31, 1985

The basic purpose of the transition program in the operations area was to obtain a detailed understanding of the FMPC operations with emphasis on equipment and organization, Also considered in this evaluation were several extant conditions at FMPC which may have significant impact on initiatives adopted in the operations area. These conditions are as follows: capital expenditures over the last several years averaged less than 20% of what might be considered minimum to sustain such a facility in a good operating condition; the production load is ramping up placing greater demands on an old facility; the workforce is relatively inexperienced (68% with less than five (5) years) at FMPC; plans are in place to institute major upgrading of FMPC facilities; the RFP described the need for a major effort in the Environment, Safety and Health Area. Considering the above concerns, the transition program was focused in the following areas: Procedures - An inexperienced workforce operating in an atmosphere requiring rigid compliance with more rigorous environmental criteria necessitates clear, concise up-to-date procedures to enhance performance; Training - New equipment, new people and rigorous environmental constraints demand an aggressive, focused training program. Equipment - Site conditions are not conducive to reliable equipment …
Date: January 17, 1986
Creator: Britton, W. H.
Object Type: Report
System: The UNT Digital Library
User's manual for the code STAPRE as implemented at Lawrence Livermore National Laboratory (open access)

User's manual for the code STAPRE as implemented at Lawrence Livermore National Laboratory

This report gives a detailed description of the input and output of the statistical model code STAPRE for compound-nucleus reactions including a special section on the various level density options of the code. It is to be used in conjunction with the report IRK 76/01 + Add 76 + Add 78 by B. Strohmaier and M. Uhl which describes in detail the physical models on which the code is based and its general organization and structure.
Date: August 17, 1982
Creator: Vonach, H.
Object Type: Report
System: The UNT Digital Library
Open loop pneumatic control of a Lysholm engine or turbine exhaust pressure (open access)

Open loop pneumatic control of a Lysholm engine or turbine exhaust pressure

A Lysholm engine, or helical screw expander, is currently being evaluated at the University of California, Berkeley for staging with a conventional turbine in geothermal energy conversion. A pneumatic closed loop, proportional-integral control system was implemented to control the Lysholm engine's exhaust pressure for performance testing of the engine at constant inlet/outlet pressure ratios. The control system will also be used to control the exhaust pressure of the conventional turbine during future testing of the staged Lysholm-turbine system. Analytical modeling of the control system was performed and successful tuning was achieved by applying Ziegler-Nichol's tuning method. Stable control and quick response, of approximately 1 minute, was demonstrated for load and set point changes in desired exhaust pressures.
Date: July 17, 1981
Creator: Plonski, B.A.
Object Type: Report
System: The UNT Digital Library
Texas Parks & Wildlife News, May 17, 1989 (open access)

Texas Parks & Wildlife News, May 17, 1989

Weekly newsletter discussing natural resources, parks, hunting and fishing, and other information related to the outdoors in Texas.
Date: May 17, 1989
Creator: Texas. Parks and Wildlife Department.
Object Type: Journal/Magazine/Newsletter
System: The Portal to Texas History
Texas Register, Volume 11, Number 78, Pages 4289-4320, October 17, 1986 (open access)

Texas Register, Volume 11, Number 78, Pages 4289-4320, October 17, 1986

A weekly publication, the Texas Register serves as the journal of state agency rulemaking for Texas. Information published in the Texas Register includes proposed, adopted, withdrawn and emergency rule actions, notices of state agency review of agency rules, governor's appointments, attorney general opinions, and miscellaneous documents such as requests for proposals. After adoption, these rulemaking actions are codified into the Texas Administrative Code.
Date: October 17, 1986
Creator: Texas. Secretary of State.
Object Type: Journal/Magazine/Newsletter
System: The Portal to Texas History
Texas Register, Volume 10, Number 93, Pages 4831-4866, December 17, 1985 (open access)

Texas Register, Volume 10, Number 93, Pages 4831-4866, December 17, 1985

A weekly publication, the Texas Register serves as the journal of state agency rulemaking for Texas. Information published in the Texas Register includes proposed, adopted, withdrawn and emergency rule actions, notices of state agency review of agency rules, governor's appointments, attorney general opinions, and miscellaneous documents such as requests for proposals. After adoption, these rulemaking actions are codified into the Texas Administrative Code.
Date: December 17, 1985
Creator: Texas. Secretary of State.
Object Type: Journal/Magazine/Newsletter
System: The Portal to Texas History
Texas Register, Volume 11, Number 46, Pages 2775-2842, June 17, 1986 (open access)

Texas Register, Volume 11, Number 46, Pages 2775-2842, June 17, 1986

A weekly publication, the Texas Register serves as the journal of state agency rulemaking for Texas. Information published in the Texas Register includes proposed, adopted, withdrawn and emergency rule actions, notices of state agency review of agency rules, governor's appointments, attorney general opinions, and miscellaneous documents such as requests for proposals. After adoption, these rulemaking actions are codified into the Texas Administrative Code.
Date: June 17, 1986
Creator: Texas. Secretary of State.
Object Type: Journal/Magazine/Newsletter
System: The Portal to Texas History
Texas Register, Volume 11, Number 5, Pages 239-310, January 17, 1986 (open access)

Texas Register, Volume 11, Number 5, Pages 239-310, January 17, 1986

A weekly publication, the Texas Register serves as the journal of state agency rulemaking for Texas. Information published in the Texas Register includes proposed, adopted, withdrawn and emergency rule actions, notices of state agency review of agency rules, governor's appointments, attorney general opinions, and miscellaneous documents such as requests for proposals. After adoption, these rulemaking actions are codified into the Texas Administrative Code.
Date: January 17, 1986
Creator: Texas. Secretary of State.
Object Type: Journal/Magazine/Newsletter
System: The Portal to Texas History