Index of the Nevada Applied Ecology Group and associated publications available in the Coordination and Information Center (open access)

Index of the Nevada Applied Ecology Group and associated publications available in the Coordination and Information Center

This publication was created by the Coordination and Information Center (CIC) to provide a readily available research tool for use by researchers interested in a specific area covered in the holdings of the CIC Archives. The Nevada Applied Ecology Group (NAEG) was formed and functioned in agreement with Planning Directive NVO-76 (July 29, 1970 and revised January 1, 1974, (CIC-165845 and CIC-16439) respectively) to coordinate the ecological and other environmental programs necessary to support the continued nuclear testing activities; and to provide a mechanism to effectively comply with requirements of the National Environmental Policy Act of 1969, Executive Order 11514, and AEC Manual Chapter 0510.'' The publication contains only citations to documents currently available at the CIC. It represents a significant portion of the principal research findings of the Nevada Applied Ecology Group.
Date: February 1, 1991
Creator: Maza, B.G.
Object Type: Report
System: The UNT Digital Library
[Investigations in dynamics of gauge theories in theoretical particle physics]. [Virginia Polytechnic Institute State Univ. , Blacksburg] (open access)

[Investigations in dynamics of gauge theories in theoretical particle physics]. [Virginia Polytechnic Institute State Univ. , Blacksburg]

The major theme of the theoretical physics research conducted under DOE support over the past several years has been within the rubric of the standard model, and concerned the interplay between symmetries and dynamics. The research was thus carried out mostly in the context of gauge field theories, and usually in the presence of chiral fermions. Dynamical symmetry breaking was examined both from the point of view of perturbation theory, as well as from non-perturbative techniques associated with certain characteristic features of specific theories. Among the topics of research were: the implications of abelian and non-abelian anomalies on the spectrum and possible dynamical symmetry breaking in any theory, topological and conformal properties of quantum fields in two and higher dimensions, the breaking of global chiral symmetries by vector-like gauge theories such as QCD, the phenomenological implications of a strongly interacting Higgs sector in the standard model, and the application of soliton ideas to the physics to be explored at the SSC.
Date: January 1, 1993
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Partial-wave analyses of hadron scattering below 2 GeV (open access)

Partial-wave analyses of hadron scattering below 2 GeV

The Center for Analysis of Particle Scattering (CAPS) in the Department of Physics at Virginia Polytechnic Institute and State University has analyzed basic two-body hadron reactions below 2 GeV for the last two decades. Reactions studied were nucleon-nucleon, pion-nucleon, K[sup +]-nucleon and pion photoproduction systems. In addition to analyses of these reactions, a computer graphics system (SAID) has been developed and disseminated to over 250 research institutions using VAX computers. The computer-interactive system for disseminating information on basic scattering reactions is also accessible to the physics community through TELNET on the VPI SU physics department VAX.
Date: January 1, 1992
Creator: Arndt, Richard A.; Roper, L. David & Workman, Ron L.
Object Type: Report
System: The UNT Digital Library
EFFECT OF CROSSLINKING ON MITOCHONDRIAL CYTOCHROME c OXIDASE (open access)

EFFECT OF CROSSLINKING ON MITOCHONDRIAL CYTOCHROME c OXIDASE

Purified and reconstituted cytochrome {und c} oxidase and mitochondria were crosslinked with biimidates in the presence and absence of cytochrome {und c}. These experiments indicate that oxidase subunit interactions are required for activity and that cytochrome {und c} mobility may be required for electron transport activity. Biimidate treatment of purified and reconstituted oxidase crosslinks all of the oxidase protomers except subunit I when {ge} 20% of the free amines are modified and inhibits steady state oxidase activity. Transient kinetics of ferrocytochrome {und c} oxidation and ferricytochrome {und a} reduction indicates inhibition of electron transfer from heme {und a} to heme {und a}{sub 3}. Crosslinking oxidase molecules to form large aggregates displaying rotational correlation times {ge} 1 ms does not affect oxidase activity. Crosslinking of mitochondria covalently binds the bc{sub 1} and {und aa}{sub 3} complexes to cytochrome {und c}, and inhibits steady-state oxidase activity considerably more than in the case of the purified oxidase. Addition of cytochrome {und c} to the purified oxidase or to {und c}-depleted mitoplasts increases inhibition slightly. Cytochrome {und c} oligomers act as competitive inhibitors of native {und c}, however, crosslinking of cytochrome {und c} to {und c}-depleted mitoplasts or purified oxidase (with dimethyl suberimidate or …
Date: December 1, 1979
Creator: Swanson, Maurice & Packer, Lester
Object Type: Article
System: The UNT Digital Library
U.S. Department of Energy, Office of Legacy Management Program Update, April-June 2009 (open access)

U.S. Department of Energy, Office of Legacy Management Program Update, April-June 2009

Welcome to the April-June 2009 issue of the U.S. Department of Energy (DOE) Office of Legacy Management (LM) Program Update. This publication is designed to provide a status of activities within LM. The Legacy Management goals are: (1) Protect human health and the environment through effective and efficient long-term surveillance and maintenance - This goal highlights DOE's responsibility to ensure long-term protection of people, the environment, and the integrity of engineered remedies and monitoring systems. (2) Preserve, protect, and make accessible legacy records and information - This goal recognizes LM's commitment to successfully manage records, information, and archives of legacy sites under its authority. (3) Support an effective and efficient work force structured to accomplish Departmental missions and assure continuity of contractor worker pension and medical benefits - This goal recognizes DOE's commitment to its contracted work force and the consistent management of pension and health benefits. As sites continue to close, DOE faces the challenges of managing pension plan and health benefits liability. (4) Manage legacy land and assets, emphasizing protective real and personal property reuse and disposition - This goal recognizes a DOE need for local collaborative management of legacy assets, including coordinating land use planning, personal property …
Date: April 1, 2009
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Composite fabrication via resin transfer molding technology (open access)

Composite fabrication via resin transfer molding technology

The IMPReS (Integrated Modeling and Processing of Resin-based Structures) Program was funded in FY95 to consolidate, evaluate and enhance Sandia`s capabilities in the design and fabrication of composite structures. A key driver of this and related programs was the need for more agile product development processes and for model based design and fabrication tools across all of Sandia`s material technologies. A team of polymer, composite and modeling personnel was assembled to benchmark Sandia`s existing expertise in this area relative to industrial and academic programs and to initiate the tasks required to meet Sandia`s future needs. RTM (Resin Transfer Molding) was selected as the focus composite fabrication technology due to its versatility and growing use in industry. Modeling efforts focused on the prediction of composite mechanical properties and failure/damage mechanisms and also on the uncured resin flow processes typical of RTM. Appropriate molds and test composites were fabricated and model validation studies begun. This report summarizes and archives the modeling and fabrication studies carried out under IMPReS and evaluates the status of composite technology within Sandia. It should provide a complete and convenient baseline for future composite technology efforts within Sandia.
Date: April 1, 1996
Creator: Jamison, G. M. & Domeier, L. A.
Object Type: Report
System: The UNT Digital Library
Controlling incipient oxidation of pyrite for improved rejection. Final report (open access)

Controlling incipient oxidation of pyrite for improved rejection. Final report

It is well known that superficial oxidation of pyrite produces a hydrophobic sulfur-rich surface and creates problems in separating the mineral from coal using surface-based processes such as flotation and agglomeration. Numerous studies of pyrite oxidation have been conducted but most of them were concerned with the advanced stages of oxidation, and as a result it was not possible to establish a relationship between oxidation and flotation behavior. A better understanding of the mechanisms and kinetics of the incipient oxidation reactions, which may vary with the origin, morphology, texture, and solid state properties of pyrite, can lead to the development of new processes that can improve pyrite rejection from coal. This project is aimed at better understanding of the mechanisms involved during the initial stages of pyrite oxidation to foster the development of advanced coal cleaning technologies. Studies were conducted by fracturing pyrite electrodes in-situ in an electrochemical cell to create virgin surfaces. Electrochemical and photoelectrochemical techniques were employed to characterize the incipient oxidation of pyrite in aqueous solutions. Microflotation tests were conducted to obtain information on the hydrophobicity of pyrite under controlled E{sub h} and pH conditions, and the results were correlated with electrochemical studies.
Date: April 1, 1996
Creator: Yoon, R. H.; Richardson, P. E. & Tao, D. P.
Object Type: Report
System: The UNT Digital Library
Object-oriented modeling and design for sloan digital sky survey retained data (open access)

Object-oriented modeling and design for sloan digital sky survey retained data

The SDSS project will produce tens of terabytes of data with nonionships among them and with uncertain complexity in their usage. The survey is being conducted by an international collaboration of eight institutions scattered throughout the US and Japan as well as numerous individuals at other sites. The data archive must provide adequate access to all collaborating partners during the five-year survey lifetime to support: development and testing of software algorithms; quality analysis on both the raw and processed data; selection of spectroscopic targets from the photometric catalogs; and scientific analysis. Additionally, the archive will serve as the basis for the public distribution of the final calibrated data on a timely basis. In this paper, we document how we applied Object-Oriented modeling design to the development of data archives. In the end, based on the experiences, we put Object-Orientation in a proper perspective.
Date: December 1, 1995
Creator: Huang, C. H.; Munn, J.; Yanny, B.; Kent, S.; Petravick, D.; Pordes, R. et al.
Object Type: Article
System: The UNT Digital Library
Development of the chemical and electrochemical coal cleaning process (open access)

Development of the chemical and electrochemical coal cleaning process

Studies concerning the use of flotation as an alternative method of separating liberated mineral matter from chemical/electrochemical coal cleaning (CECC) treated coal were continued using Elkhorn No. 3 coal. The results obtained using different methods of recovering the clean product after CECC treatment showed trends similar to those observed previously with Pittsburgh No. 8 coal. The use of flotation after CECC treatment of the Elkhorn No. 3 coal was found to be more efficient than wet-screening. Construction of the continuous bench-scale unit was completed in this quarter. The unit was modified to process 2 lbs/hr instead of the original design of 1 lb/hr so as to ensure efficient operation of the vacuum filter unit. Start-up of the continuous unit was successfully conducted and shakedown testings were started. Initial results show that the continuous unit was able to reduce the ash content of a recently acquired Wyodak coal sample to as low as 1.16%. 2 tabs.
Date: January 1, 1991
Creator: Basilio, C.I. & Yoon, Roe-Hoan.
Object Type: Report
System: The UNT Digital Library
Development of the chemical and electrochemical coal cleaning process (open access)

Development of the chemical and electrochemical coal cleaning process

The continuous testing of the Chemical and Electrochemical Coal Cleaning (CECC) bench-scale unit (Task 6) was completed successfully in this quarter using Middle Wyodak and Elkhorn No. 3 coal samples. The CECC unit was run under the optimum conditions established for these coal samples in Task 4. For the Middle Wyodak coal, the ash content was reduced from 6.96% to as low 1.61%, corresponding to an ash rejection (by weight) of about 83%. The ash and sulfur contents of the Elkhorn No. 3 coal were reduced to as low as 1.8% and 0.9%. The average ash and sulfur rejections were calculated to be around 84% and 47%. The CECC continuous unit was used to treat -325 mesh Elkhorn No. 3 coal samples and gave ash and sulfur rejection values of as high as 77% and 66%. In these test, the clean -325 mesh coal particles were separated from the liberated mineral matter through microbubble column flotation, instead of wet-screening.
Date: January 1, 1991
Creator: Basilio, C.I. & Yoon, Roe-Hoan.
Object Type: Report
System: The UNT Digital Library
Properties of e/sup +/e/sup -/ interactions at. sqrt. s = 50 and 52 GeV (open access)

Properties of e/sup +/e/sup -/ interactions at. sqrt. s = 50 and 52 GeV

Bhabha scattering and multi-hadronic e/sup +/e/sup -/ annihilation events have been observed in the AMY detector at ..sqrt..s = 50 GeV and ..sqrt..s = 52 GeV at the TRISTAN e/sup +/e/sup -/ storage ring. Here we report the results of a preliminary analysis of the properties of these events. We present results for the e/sup +/e/sup -/ ..-->.. e/sup +/e/sup -/, e/sup +/e/sup -/ ..-->.. ..gamma gamma.. and e/sup +/e/sup -/ ..-->.. ..mu../sup +/..mu../sup -/ differential cross sections as well as for R, the ratio of e/sup +/e/sup -/ annihilation into hadrons to that for dimuons. In addition we present results on the characteristics of the final state hadrons in the annihilation events.
Date: July 1, 1987
Creator: unknown
Object Type: Article
System: The UNT Digital Library
Performance of a diesel engine; operating on raw coal-diesel engine; solvent refined coal-diesel fuel slurries. Quarterly report (open access)

Performance of a diesel engine; operating on raw coal-diesel engine; solvent refined coal-diesel fuel slurries. Quarterly report

It has been difficult to obtain stable experimental slurries of coal or solvent-refined coal for testing in diesel engines. Attempts to burn the 40 percent by weight raw coal-fuel oil slurry were hampered from the outset. First the transfer pump would not deliver the slurry to the injection pump. This problem was overcome by raising the slurry storage tank to increase the positive head on the pump inlet. With the engine running on the slurry blow-by of gases into the crank case increased considerably; the engine ran erratically; and when operating under its own power produced approximately 20 percent of what was expected. Thus, the test was ended after one hour of operation instead of ten hours as was the case with the 20 and 32 percent slurries. The immediate loss of power is thought to be a result of poor penetration, dispersion, and atomization of the injected fuel. A request to revise the scope of the work so that an investigation of this power loss can replace the work required to operate on the 40 percent slurries has been submitted. Inspection of this test engine indicates wear occurs at an excessive rate, although thermodynamic changes are not drastic with …
Date: December 1, 1979
Creator: Marshall, H. P.
Object Type: Report
System: The UNT Digital Library
An updated global grid point surface air temperature anomaly data set: 1851--1990 (open access)

An updated global grid point surface air temperature anomaly data set: 1851--1990

This document presents land-based monthly surface air temperature anomalies (departures from a 1951--1970 reference period mean) on a 5{degree} latitude by 10{degree} longitude global grid. Monthly surface air temperature anomalies (departures from a 1957--1975 reference period mean) for the Antarctic (grid points from 65{degree}S to 85{degree}S) are presented in a similar way as a separate data set. The data were derived primarily from the World Weather Records and the archives of the United Kingdom Meteorological Office. This long-term record of temperature anomalies may be used in studies addressing possible greenhouse-gas-induced climate changes. To date, the data have been employed in generating regional, hemispheric, and global time series for determining whether recent (i.e., post-1900) warming trends have taken place. This document also presents the monthly mean temperature records for the individual stations that were used to generate the set of gridded anomalies. The periods of record vary by station. Northern Hemisphere station data have been corrected for inhomogeneities, while Southern Hemisphere data are presented in uncorrected form. 14 refs., 11 figs., 10 tabs.
Date: October 1, 1991
Creator: Sepanski, R. J.; Boden, T. A. & Daniels, R. C.
Object Type: Report
System: The UNT Digital Library
Studies of incipient oxidation of coal-pyrite for improved pyrite rejection (open access)

Studies of incipient oxidation of coal-pyrite for improved pyrite rejection

In order to foster the development of advanced coal cleaning technologies fundamental studies.of the initial stages of pyrite oxidation have been.initiated. This work is being done on pyrite surfaces that are freshly fractured in an electrolyte solution. This procedure produces surfaces that are initially unoxidized, allowing the subsequent oxidation processes to be studied in detail. It is shown that freshly fractured pyrite electrodes instantaneously (at fracture) assume a rest potential several hundred millivolts more negative than the usual open-circuit potential. A finite, anodic photocurrent, is also observed on the fractured electrodes. Following cleavage, the rest potential increases, indicating an oxidation reaction occurring on the electrodes. The photocurrent is relatively insensitive to this oxidation process, and to moderate anodic and cathodic polarization. However, strong cathodic polarization to about -0.76 V (SHE) at pH 9.2 causes the photocurrent to decrease to zero. No reversal in the sign of the photocurrent is observed and it is believed that the flat band potential occurs near -0.76 V, i.e., where the photocurrent goes to zero. Voltammetry indicates that pyrite also undergoes cathodic decomposition at -0.76 V. This establishes that pyrite must be cathodically decomposed to reach the flat band potential.
Date: January 1, 1992
Creator: Yoon, R. H. & Richardson, P. E.
Object Type: Report
System: The UNT Digital Library
Mine-to-Mill Optimization of Aggregate Production (open access)

Mine-to-Mill Optimization of Aggregate Production

Mine-to-Mill optimization is a total systems approach to the reduction of energy and cost in mining and mineral processing operations. Developed at the Julius Krutschnitt Mineral Research Centre (JKMRC) in Queensland, Australia, the Mine-to-Mill approach attempts to minimize energy consumption through the optimization of all steps in the size reduction process. The approach involves sampling and modeling of blasting and processing, followed by computer simulation to optimize the operation and develop alternatives. The most promising alternatives are implemented, and sampling is conducted to quantify energy savings. In the current project, the primary objective is to adapt the JKMRC Mine-to-Mill technology to the aggregates industry. The second phase of this project is being carried out at the Pittsboro Quarry located south of Chapel Hill, North Carolina. This quarry is owned by 3M Corporation and operated by Luck Stone. Based on lessons learned from the first phase work, long-term monitoring ({approx} three months) of all quarry operations is being carried out to minimize the impact of geological changes during the mining process. To date, the blasting and processing operations have been audited and modeled, the long-term monitoring of current Luck Stone practice has been completed, and a modified blasting approach has been …
Date: June 1, 2006
Creator: Adel, Greg; Kojovic, Toni & Thornton, Darren
Object Type: Report
System: The UNT Digital Library
On-Line Self-Calibrating Single Crystal Sapphire Optical Sensor Instrumentation for Accurate and Reliable Coal Gasifier Temperature Measurement (open access)

On-Line Self-Calibrating Single Crystal Sapphire Optical Sensor Instrumentation for Accurate and Reliable Coal Gasifier Temperature Measurement

This report summarizes technical progress April-September 2005 on the Phase II program ''On-Line Self-Calibrating Single Crystal Sapphire Optical Sensor Instrumentation for Accurate and Reliable Coal Gasifier Temperature Measurement'', funded by the Federal Energy Technology Center of the U.S. Department of Energy, and performed by the Center for Photonics Technology of the Bradley Department of Electrical and Computer Engineering at Virginia Tech. The outcome of the first phase of this program was the selection of broadband polarimetric differential interferometry (BPDI) for further prototype instrumentation development. This approach is based on the measurement of the optical path difference (OPD) between two orthogonally polarized light beams in a single-crystal sapphire disk. The objective of this program is to bring the sensor technology, which has already been demonstrated in the laboratory, to a level where the sensor can be deployed in the harsh industrial environments and will become commercially viable. Due to the difficulties described on the last report, field testing of the BPDI system has not continued to date. However, we have developed an alternative high temperature sensing solution, which is described in this report. The sensing system will be installed and tested at TECO's Polk Power Station. Following a site visit in …
Date: November 1, 2005
Creator: Cooper, Kristie; Pickrell, Gary & Wang, Anbo
Object Type: Report
System: The UNT Digital Library
On-Line Self-Calibrating Single Crystal Sapphire Optical Sensor Instrumentation for Accurate and Reliable Coal Gasifier Temperature Measurement (open access)

On-Line Self-Calibrating Single Crystal Sapphire Optical Sensor Instrumentation for Accurate and Reliable Coal Gasifier Temperature Measurement

This report summarizes technical progress over the first six months of the Phase II program ''On-Line Self-Calibrating Single Crystal Sapphire Optical Sensor Instrumentation for Accurate and Reliable Coal Gasifier Temperature Measurement'', funded by the Federal Energy Technology Center of the U.S. Department of Energy, and performed by the Center for Photonics Technology of the Bradley Department of Electrical and Computer Engineering at Virginia Tech. The outcome of the first phase of this program was the selection of broadband polarimetric differential interferometry (BPDI) for further prototype instrumentation development. This approach is based on the measurement of the optical path difference (OPD) between two orthogonally polarized light beams in a single-crystal sapphire disk. The objective of this program is to bring the BPDI sensor technology, which has already been demonstrated in the laboratory, to a level where the sensor can be deployed in the harsh industrial environments and will become commercially viable. Research efforts were focused on analyzing and testing factors that impact performance degradation of the initially designed sensor prototype, including sensing element movement within the sensing probe and optical signal quality degradation. Based these results, a new version of the sensing system was designed by combining the sapphire disk sensing …
Date: April 1, 2003
Creator: Cooper, Kristie; Pickrell, Gary & Wang, Anbo
Object Type: Report
System: The UNT Digital Library
OPTICAL FIBER SENSOR TECHNOLOGIES FOR EFFICIENT AND ECONOMICAL OIL RECOVERY (open access)

OPTICAL FIBER SENSOR TECHNOLOGIES FOR EFFICIENT AND ECONOMICAL OIL RECOVERY

This report summarizes technical progress over the fourth year of the ''Optical Fiber Sensor Technologies for Efficient and Economical Oil Recovery'' program, funded by the Federal Energy Technology Center of the U.S. Department of Energy, and performed by the Center for Photonics Technology of the Bradley Department of Electrical and Computer Engineering at Virginia Tech. During the reporting period, research efforts under the program were focused on the development and evaluation of the fiber optic flow sensor system, and field testing in Tulsa, OK and the second field test of the pressure and temperature sensors in Coalinga, CA. The feasibility of a self-compensating fiber optic flow sensor based on a cantilever beam and interferometer for real-time flow rate measurements in the fluid filled pipes of oil field was clearly demonstrated. In addition, field testing of the pressure and temperature sensors deployed downhole continued. These accomplishments are summarized here: (1) Theoretical analysis and simulations were performed to ensure performance of the design. (2) The sensor fabrication and packaging techniques were investigated and improved. (3) Prototype flow sensors were fabricated based on the fabrication experience of hundreds of test sensors. (4) A lab-scale flow testing system was constructed and used for sensor …
Date: April 1, 2003
Creator: Cooper, Kristie; Pickrell, Gary & Wang, Anbo
Object Type: Report
System: The UNT Digital Library
An updated global grid point surface air temperature anomaly data set: 1851--1990 (open access)

An updated global grid point surface air temperature anomaly data set: 1851--1990

This document presents land-based monthly surface air temperature anomalies (departures from a 1951--1970 reference period mean) on a 5{degree} latitude by 10{degree} longitude global grid. Monthly surface air temperature anomalies (departures from a 1957--1975 reference period mean) for the Antarctic (grid points from 65{degree}S to 85{degree}S) are presented in a similar way as a separate data set. The data were derived primarily from the World Weather Records and the archives of the United Kingdom Meteorological Office. This long-term record of temperature anomalies may be used in studies addressing possible greenhouse-gas-induced climate changes. To date, the data have been employed in generating regional, hemispheric, and global time series for determining whether recent (i.e., post-1900) warming trends have taken place. This document also presents the monthly mean temperature records for the individual stations that were used to generate the set of gridded anomalies. The periods of record vary by station. Northern Hemisphere station data have been corrected for inhomogeneities, while Southern Hemisphere data are presented in uncorrected form. 14 refs., 11 figs., 10 tabs.
Date: October 1, 1991
Creator: Sepanski, R. J.; Boden, T. A. & Daniels, R. C.
Object Type: Report
System: The UNT Digital Library
Design and implementation of a control and data acquisition system for pellet injectors (open access)

Design and implementation of a control and data acquisition system for pellet injectors

A stand-alone control and data acquisition system for pellet injectors has been designed and implemented to support pellet injector development at Oak Ridge Laboratory (ORNL) and to enable ORNL pellet injectors to be installed on various fusion experimental devices. The stand-alone system permits LOCAL operation of the injector from a nearby panel and REMOTE operation from the experiment control room. Major components of the system are (1) an Allen-Bradley PLC 2/30 programmable controller, (2) a VAX minicomputer, and (3) a CAMAC serial highway interface. The programmable logic controller (PLC) is used to perform all control functions of the injector. In LOCAL, the operator interface is provided by an intelligent panel system that has a keypad and pushbutton module programmed from the PLC. In REMOTE, the operator interfaces via a VAX-based color graphics display and uses a trackball and keyboard to issue commands. Communications between the remote and local controls and to the fusion experiment supervisory system are via the CAMAC highway. The VAX archives transient data from pellet shots and trend data acquired from the PLC. Details of the hardware and software design and the operation of the system are presented in this paper. 3 refs., 1 fig.
Date: January 1, 1985
Creator: Baylor, L. R.; Burris, R. D.; Greenwood, D. E. & Stewart, K. A.
Object Type: Article
System: The UNT Digital Library
Proceedings of the ninth annual Pacific Climate (PACLIM) workshop (open access)

Proceedings of the ninth annual Pacific Climate (PACLIM) workshop

We describe the climatology of the western United States as seen from two 1-month perspectives, January and July 1988, of the National Meteorological Center large-scale global analysis, the Colorado State University Regional Atmospheric Modeling System (RAMS), and various station observation sets. An advantage of the NMC analysis and the RAMS is that they provide a continuous field interpolation of the meteorological variables. It Is more difficult to describe spatial meteorological fields from the available sparse station networks. We assess accuracy of the NMC analysis and RAMS by finding differences between the analysts, the model and station values at the stations. From these comparisons, we find that RAMS has much more well-developed mesoscale circulation, especially in the surface wind field. However, RAMS climatological and transient fields do not appear to be substantially closer than the large-scale analysis to the station observations. The RAMS model does provide many other meteorological variables, such as precipitation, which are not readily available from the archives of the global analysis. Thus, RAMS could, at the least, be a tool to augment the NMC large-scale analyses.
Date: March 1, 1993
Creator: Redmond, K. T. & Tharp, V. L.
Object Type: Report
System: The UNT Digital Library
Hanford Cultural Resources Laboratory Oral History and Ethnography Task Annual Report (open access)

Hanford Cultural Resources Laboratory Oral History and Ethnography Task Annual Report

This report summarizes the work completed by Pacific Northwest National Laboratory Hanford Cultural Resource Laboratory's (HCRL) Oral History and Ethnography Task through fiscal year 2002. This work was designed to collect focused, systematic, and formal oral histories to help identify and evaluate historic properties at the Hanford Site, which has a history stretching from prehistoric times to the atomic age. This task has become imperative as the people who contributed to Hanford's history age and pass away. The information gained by the oral histories is essential to the U.S. Department of Energy Richland Operations Office's (DOE-RL) Hanford Cultural and Historical Resources Program. This program supports the Department's National Historic Preservation Act responsibilities as Site staff work to end the environmental legacy from plutonium production and other activities. In addition to summarizing the work performed by the task, the report lists specific recommendations regarding future and ongoing work: More individuals related to Hanford's history should be identified and interviewed. The HCRL should work with the community and interest groups and employ their help in collecting oral histories. Data should continue to be compiled in annual reports so that they are available to DOE-RL decision makers and the public. Data should be …
Date: July 1, 2003
Creator: Prendergast, Ellen L.
Object Type: Report
System: The UNT Digital Library
Effects of shear and roughness on vortex sheeding patterns behind a circular cylinder at critical Reynolds numbers (open access)

Effects of shear and roughness on vortex sheeding patterns behind a circular cylinder at critical Reynolds numbers

This test program was undertaken to further the understanding of vortex shedding patterns to be experienced by the OTEC Cold Water pipe. The present series of tests was planned to incorporate improvements in design of the previously used test model and data gathering capability in order to achieve certain results which the previous program was unable to achieve. Specifically, three goals were envisioned: (1) determination of eddy shedding correlation lengths as a function of upstream shear. Improved endplate design and larger aspect ratio were the chief steps taken toward attaining this objective. (2) Determination of minimum shear level producing cellular shedding patterns. A wider range of upstream velocity shears was to be tested than in any previous study. (3) Detailed analysis of the effect of roughness on shedding patterns. A very smooth cylinder was to be tested under the same conditions as a roughened cylinder, and the two sets of results compared. Two weeks of wind tunnel testing were scheduled to perform the tests. The first week was allotted to the roughened cylinder, and the second week was devoted to examining the smooth cylinder. The experimental setup and procedures are described, and results are presented and discussed. (WHK)
Date: October 1, 1979
Creator: Rooney, David M. & Peltzer, Rodney D.
Object Type: Report
System: The UNT Digital Library
Advisory Committee on human radiation experiments. Final report, Supplemental Volume 2. Sources and documentation (open access)

Advisory Committee on human radiation experiments. Final report, Supplemental Volume 2. Sources and documentation

This volume and its appendixes supplement the Advisory Committee`s final report by reporting how we went about looking for information concerning human radiation experiments and intentional releases, a description of what we found and where we found it, and a finding aid for the information that we collected. This volume begins with an overview of federal records, including general descriptions of the types of records that have been useful and how the federal government handles these records. This is followed by an agency-by-agency account of the discovery process and descriptions of the records reviewed, together with instructions on how to obtain further information from those agencies. There is also a description of other sources of information that have been important, including institutional records, print resources, and nonprint media and interviews. The third part contains brief accounts of ACHRE`s two major contemporary survey projects (these are described in greater detail in the final report and another supplemental volume) and other research activities. The final section describes how the ACHRE information-nation collections were managed and the records that ACHRE created in the course of its work; this constitutes a general finding aid for the materials deposited with the National Archives. The appendices …
Date: January 1, 1995
Creator: unknown
Object Type: Report
System: The UNT Digital Library