You limited your search to:

  Partner: UNT Libraries Government Documents Department
Measurement of the Mass of the D0 Meson

Measurement of the Mass of the D0 Meson

Date: September 5, 2013
Creator: ,
Description: Abstract Not Provided
Contributing Partner: UNT Libraries Government Documents Department
MODIFIED FINITE ELEMENT TRANSPORT MODEL, FETRA, FOR SEDIMENT AND RAOIONUCLIDE MIGRATION IN OPEN COASTAL WATERS

MODIFIED FINITE ELEMENT TRANSPORT MODEL, FETRA, FOR SEDIMENT AND RAOIONUCLIDE MIGRATION IN OPEN COASTAL WATERS

Date: August 1, 1979
Creator: ,
Description: The finite element model, FETRA, simulates transport of sediment and radionuclides (and other contaminants, such as heavy metals, pesticides, and other toxic substances) in surface water bodies. The model is an unsteady, two-dimensional (longitudinal and lateral} model which consists of the following three submodels coupled to include sediment-contaminant interactions: 1) sediment transport submodel, 2} dissolved contaminant transport submodel, and 3) particulate contaminant (contaminant adsorbed by sediment) transport submodel. Under the current phase of the study, FETRA was modified to include sediment-wave interaction in order to extend the applicability of the model to coastal zones and large lakes (e.g., the Great Lakes) where wave actions can be one of the dominant mechanisms to transport sediment and toxic contaminant. FETRA was further modified to handle both linear and quadratic approximations to velocity and depth distributions in order to be compatible with various finite element hydrodynamic models (e.g., RMA II and CAFE) which supply hydrodynamic input data to FETRA. The next step is to apply FETRA to coastal zones to simulate transport of sediment and radionuclides with their interactions in order to test and verify the model under marine and large lacustrine environments.
Contributing Partner: UNT Libraries Government Documents Department
Monitoring the Random Errors of Nuclear Material Measurements

Monitoring the Random Errors of Nuclear Material Measurements

Date: June 1, 1980
Creator: ,
Description: Monitoring and controlling random errors is an important function of a measurement control program. This report describes the principal sources of random error in the common nuclear material measurement processes and the most important elements of a program for monitoring, evaluating and controlling the random error standard deviations of these processes.
Contributing Partner: UNT Libraries Government Documents Department
Precision Electroweak Measurements at the SLC : Overview and Perspective.

Precision Electroweak Measurements at the SLC : Overview and Perspective.

Date: April 20, 1999
Creator: ,
Description: Preliminary SLD electroweak results based on essentially the complete 550K Z dataset are presented and interpreted, and some historical background is provided.
Contributing Partner: UNT Libraries Government Documents Department
Preliminary Results from an Investigation into Nanostructured Nuclear Radiation Detectors for Non-Proliferation Applications

Preliminary Results from an Investigation into Nanostructured Nuclear Radiation Detectors for Non-Proliferation Applications

Date: October 1, 2012
Creator: ,
Description: In recent years, the concept of embedding composite scintillators consisting of nanosized inorganic crystals in an organic matrix has been actively pursued. Nanocomposite detectors have the potential to meet many of the homeland security, non-proliferation, and border and cargo-screening needs of the nation and, by virtue of their superior nuclear identification capability over plastic, at roughly the same cost as plastic, have the potential to replace all plastic detectors. Nanocomposites clearly have the potential of being a gamma ray detection material that would be sensitive yet less expensive and easier to produce on a large scale than growing large, whole crystals of similar sensitivity. These detectors would have a broad energy range and a sufficient energy resolution to perform isotopic identification. The material can also be fabricated on an industrial scale, further reducing cost. This investigation focused on designing and fabricating prototype core/shell and quantum dot (QD) detectors. Fourteen core/shell and four QD detectors, all with the basic consistency of a mixture of nanoparticles in a polymer matrix with different densities of nanoparticles, were prepared. Nanoparticles with sizes <10 nm were fabricated, embedded in a polystyrene matrix, and the resultant scintillators’ radiation detector properties were characterized. This work also attempted ...
Contributing Partner: UNT Libraries Government Documents Department
A Procedure for the Qualitative Interpretation of Fuel Centerline Thermocouple Response to Step-Power Decreases

A Procedure for the Qualitative Interpretation of Fuel Centerline Thermocouple Response to Step-Power Decreases

Date: October 1, 1979
Creator: ,
Description: This report reviews the present calculational techniques that may be used to interpret the transient response of fuel centerline thermocouples to step decreases in rod power. A new technique developed herein involves plotting the natural logarithm of the normalized thermocouple data versus time, plotting various calculations in the same way, and observing the curvature of the resulting lines. Also described is the small computer code, MWRAM, which facilitates testing various models against transient data. Transient data from IFA-513 is presented. This test assembly in the Halden Reactor, Norway, is jointly sponsored by the Nuclear Regulatory Commission and the Halden Project. A comparison of MWRAM calculations with this data has shown that fuel cracking appears to greatly influence the heat transfer modes in the fuel rod. A method of estimating the effective fuel-cladding gap size from this transient data is also discussed in this report .
Contributing Partner: UNT Libraries Government Documents Department
QUARTERLY PROGRESS REPORT COVERING PERIOD APRIL 1 THROUGH JUNE 30, 1978-FOR STUDY OF PLUTONIUM OXIDE LEAK RATES FROM SHIPPING FROM SHIPPING CONTAINERS

QUARTERLY PROGRESS REPORT COVERING PERIOD APRIL 1 THROUGH JUNE 30, 1978-FOR STUDY OF PLUTONIUM OXIDE LEAK RATES FROM SHIPPING FROM SHIPPING CONTAINERS

Date: August 29, 1978
Creator: ,
Description: Several tasks are to be undertaken in this study which, when combined, have the end objective of defining the leak rates of plutonium oxide powder from characterized leaks.
Contributing Partner: UNT Libraries Government Documents Department
QUARTERLY PROGRESS REPORT COVERING PERIOD JULY 1 THROUGH SEPTEMBER 29, 1978 -- THE STUDY OF PLUTONIUM OXIDE LEAK RATES FROM SHIPPING CONTAINERS

QUARTERLY PROGRESS REPORT COVERING PERIOD JULY 1 THROUGH SEPTEMBER 29, 1978 -- THE STUDY OF PLUTONIUM OXIDE LEAK RATES FROM SHIPPING CONTAINERS

Date: October 20, 1978
Creator: ,
Description: Several tasks are to be undertaken in this study which, when combined, have the end objective of defining the leak rates of plutonium oxide powder from characterized leaks.
Contributing Partner: UNT Libraries Government Documents Department
QUARTERLY SUMMARY REPORT APRIL-JUNE 1978 PROCESS FOR CLEANING AND REMOVAL OF SULFUR COMPOUNDS FROM LOW BTU GASES

QUARTERLY SUMMARY REPORT APRIL-JUNE 1978 PROCESS FOR CLEANING AND REMOVAL OF SULFUR COMPOUNDS FROM LOW BTU GASES

Date: July 1, 1978
Creator: ,
Description: In this phase of work the Process Development Unit (PDU) is to be remodeled by incorporation of appropriate subsystems to permit operation in continuous process mode. The PDU will be operated for a period of time sufficient to demonstrate process viability.
Contributing Partner: UNT Libraries Government Documents Department
RCRA Permit for a Hazardous Waste Management Facility Permit Number NEV HW0101 Annual Summary/Waste Minimization Report Calendar Year 2012, Nevada National Security Site, Nevada

RCRA Permit for a Hazardous Waste Management Facility Permit Number NEV HW0101 Annual Summary/Waste Minimization Report Calendar Year 2012, Nevada National Security Site, Nevada

Date: February 21, 2013
Creator: ,
Description: This report summarizes the U.S. Environmental Protection Agency (EPA) identification number of each generator from which the Permittee received a waste stream, a description and quantity of each waste stream in tons and cubic feet received at the facility, the method of treatment, storage, and/or disposal for each waste stream, a description of the waste minimization efforts undertaken, a description of the changes in volume and toxicity of waste actually received, any unusual occurrences, and the results of tank integrity assessments. This Annual Summary/Waste Minimization Report is prepared in accordance with Section 2.13.3 of Permit Number NEV HW0101, issued 10/17/10.
Contributing Partner: UNT Libraries Government Documents Department