States

AN-107 (C) Simulant Bench-Scale LAW Evaporation with Organic Regulatory Analysis (open access)

AN-107 (C) Simulant Bench-Scale LAW Evaporation with Organic Regulatory Analysis

The overall objective of this work is to develop preliminary operating data including expected concentration endpoints using a C waste envelope simulant. The data is to be used for the preliminary Hanford RPP flow sheet development and LAW Melter Feed Evaporator design.
Date: May 15, 2001
Creator: Saito, H.H.
Object Type: Report
System: The UNT Digital Library
AC Loss Measurements with a Cryocooled Sample (open access)

AC Loss Measurements with a Cryocooled Sample

A new cryostat cooled by a closed-cycle Cryomech GB-37 cryocooler for superconductor measurements at temperatures down to 20 K is described. The sample is conductively coupled to the cold stage so as to minimize vibration and thermal stresses. AC losses have been measured calorimetrically in several HTSC coils that have been wound to simulate sub-scale transformer winding pairs. Stable temperatures down to 20 K were reached on these coils, allowing measurements at practical levels of ac current and I{sub c}. By using short ac current pulses, losses on individual turns could be resolved. Results are reported mainly to showcase the apparatus, measurement procedure and analytical approach.
Date: February 15, 2001
Creator: Schwenterly, S.W.
Object Type: Article
System: The UNT Digital Library
Afghanistan: Current Issues and U.S. Policy Concerns (open access)

Afghanistan: Current Issues and U.S. Policy Concerns

The United States and its allies are helping Afghanistan emerging from more than 22 years of warfare, although substantial risk to Afghan stability remains. Before the U.S. military campaign against the orthodox Islamist Taliban movement began on October 7, 2001, Afghanistan had been mired in conflict since the Soviet invasion of Afghanistan in 1979. The defeat of the Taliban has enabled the United States and its coalition partners to send forces throughout Afghanistan to search for Taliban and Al Qaeda fighters and leaders that remain at large, including Osama bin Laden. As the war against remaining Al Qaeda and Taliban elements winds down, the United States is shifting its military focus toward stabilizing the interim government, including training a new Afghan national army, and supporting the international security force (ISAF) that is helping the new government provide security.
Date: November 15, 2001
Creator: Katzman, Kenneth
Object Type: Report
System: The UNT Digital Library
Agricultural Trade: Impacts of the Andean Trade Preference Act on Asparagus Producers and Consumers (open access)

Agricultural Trade: Impacts of the Andean Trade Preference Act on Asparagus Producers and Consumers

A letter report issued by the General Accounting Office with an abstract that begins "U.S. asparagus imports increased in the 1990s and now comprise nearly one-half of the asparagus consumed in the United States. Peru is the second largest source of imported asparagus and benefits from duty-free treatment under the Andean Trade Preference Act (ATPA). ATPA is estimated to have displaced between two and eight percent of the value of domestic production from what it would have been without the act. Although the supply of fresh asparagus from imports has increased since ATPA's enactment, consumer demand has been strong, and prices have risen. In addition, an apparent increase in consumer preference for fresh asparagus has contributed to a downward shift in the domestic demand for processed asparagus. Most of the decline in the domestic production of processed asparagus occurred in Michigan and Washington, the two states that produce most canned and frozen asparagus. If ATPA is reauthorized, domestic producers of asparagus and, in particular, asparagus for processing, will likely face continued displacement, but consumers can expect continued benefits from the year-round availability of fresh asparagus. However, some of this displacement will likely occur even if ATPA is not reauthorized and …
Date: March 15, 2001
Creator: United States. General Accounting Office.
Object Type: Report
System: The UNT Digital Library
Alliance for Computational Science Collaboration, HBCU Partnership at Alabama A&M University Final Performance Technical Report (open access)

Alliance for Computational Science Collaboration, HBCU Partnership at Alabama A&M University Final Performance Technical Report

The objective of this project was to conduct high-performance computing research and teaching at AAMU, and to train African-American and other minority students and scientists in the computational science field for eventual employment with DOE. During the project period, eight tasks were accomplished. Student Research Assistant, Work Study, Summer Interns, Scholarship were proved to be one of the best ways for us to attract top-quality minority students. Under the support of DOE, through research, summer interns, collaborations, scholarships programs, AAMU has successfully provided research and educational opportunities to minority students in the field related to computational science.
Date: November 15, 2001
Creator: Deng, Z. T.
Object Type: Report
System: The UNT Digital Library
Ambulance Services: Changes Needed to Improve Medicare Payment Policies and Coverage Decisions (open access)

Ambulance Services: Changes Needed to Improve Medicare Payment Policies and Coverage Decisions

Testimony issued by the General Accounting Office with an abstract that begins "The Balanced Budget Act of 1997 required Medicare to change its payment system for ambulance services. In response, the Health Care Financing Administration (HCFA), now called the Centers for Medicare and Medicaid Services (CMS), proposed a fee schedule to standardize payments across provider types on the basis of national rates for particular services. Under the act, the fee schedule was to have applied to ambulance services furnished on or after January 1, 2000. HCFA published a proposed rule in September 2000 and has received public comment, but it has not yet issued a final rule. This testimony discusses the unique concerns of rural ambulance providers and the likely effects of the proposed fee schedule on these providers. Many rural ambulance providers face a set of unique challenges in implementing an appropriate payment policy. Rural providers--particularly those serving large geographic areas with low population density--tend to have high per-trip costs compared with urban and suburban providers. The proposed Medicare fee schedule does not sufficiently distinguish the providers serving beneficiaries in the most isolated rural areas and may not appropriately account for the higher costs of low-volume providers."
Date: November 15, 2001
Creator: United States. General Accounting Office.
Object Type: Text
System: The UNT Digital Library
Annual Report 2000. Chemical Structure and Dynamics (open access)

Annual Report 2000. Chemical Structure and Dynamics

This annual report describes the research and accomplishments of the Chemical Structure and Dynamics Program in the year 2000, one of six research programs at the William R. Wiley Environmental Molecular Sciences Laboratory (EMSL) - a multidisciplinary, national scientific user facility and research organization. The Chemical Structure and Dynamics (CS&D) program is meeting the need for a fundamental, molecular-level understanding by 1) extending the experimental characterization and theoretical description of chemical reactions to encompass the effects of condensed media and interfaces; 2) developing a multidisciplinary capability for describing interfacial chemical processes relevant to environmental chemistry; and 3) developing state-of-the-art research and analytical methods for characterizing complex materials of the types found in natural and contaminated systems.
Date: April 15, 2001
Creator: Colson, Steven D. & McDowell, Robin S.
Object Type: Report
System: The UNT Digital Library
Annual Report 2000 Macromolecular Structure and Dynamics (open access)

Annual Report 2000 Macromolecular Structure and Dynamics

Overview and recognition of MS&D's 2000 year.
Date: September 15, 2001
Creator: Koppenaal, David W.; Ellis, Paul D. & Smith, Richard D.
Object Type: Report
System: The UNT Digital Library
Anti-Idling Laws and Regulations (open access)

Anti-Idling Laws and Regulations

None
Date: March 15, 2001
Creator: Levinson, Terry
Object Type: Article
System: The UNT Digital Library
Assessing Risk of Innovation (open access)

Assessing Risk of Innovation

Today's manufacturing systems and equipment must perform at levels thought impossible a decade ago. Companies must push operations, quality, and efficiencies to unprecedented levels while holding down costs. In this new economy, companies must be concerned with market shares, equity growth, market saturation, and profit. U.S. manufacturing is no exception and is a prime example of businesses forced to adapt to constant and rapid changes in customer needs and product mixes, giving rise to the term ''Agile Manufacturing''. The survival and ultimate success of the American Manufacturing economy may depend upon its ability to create, innovate, and quickly assess the impact that new innovations will have on its business practices. Given the need for flexibility, companies need proven methods to predict and measure the impact that new technologies and strategies will have on overall plant performance from an enterprise perspective. The Value-Derivative Model provides a methodology and approach to assess such impacts in terms of energy savings, production increases, quality impacts, emission reduction, and maintenance and operating costs as they relate to enabling and emerging technologies. This is realized by calculating a set of first order sensitivity parameters obtained from expanding a Taylor Series about the system's operating point. These …
Date: August 15, 2001
Creator: Allgood, GO
Object Type: Article
System: The UNT Digital Library
Automatic differentiation tools in optimization software. (open access)

Automatic differentiation tools in optimization software.

The authors discuss the role of automatic differentiation tools in optimization software. We emphasize issues that are important to large-scale optimization and that have proved useful in the installation of nonlinear solvers in the NEOS Server. Our discussion centers on the computation of the gradient and Hessian matrix for partially separable functions and shows that the gradient and Hessian matrix can be computed with guaranteed bounds in time and memory requirements.
Date: January 15, 2001
Creator: More, J. J.
Object Type: Article
System: The UNT Digital Library
Biofiltration of Volatile Pollutants: Solubility Effects (open access)

Biofiltration of Volatile Pollutants: Solubility Effects

This project investigates and collects fundamental partitioning data for a variety of sparingly soluble subsurface contaminants (e.g., TCE, etc.) between vapor, aqueous phase, and matrices containing substantial quantities of biomass and biomass components. Due to the difficulty of obtaining these measurements, environmental models have generally used solubility constants of chemicals in pure water or, in a few rare cases, simple linear models. Our prior EMSP work has shown that the presence of biological material can increase effective solubilities by an order of magnitude for sparingly soluble organics; therefore, the previous simple approaches are not valid and are extremely poor predictors of actual bio-influenced partitioning. It is likely that environmental contaminants will partition in a similar manner into high-biomass phases (e.g. biobarriers and plants) or humic soils. Biological material in the subsurface can include lipids, fatty acids, humic materials, as well a s the lumped and difficult to estimate 'biomass'. Our measurements include partition into these biological materials to allow better estimation. Fundamental data collected will be used in mathematical models predicting transport and sorption in subsurface environments, with the impacts on bioremediation being evaluated based on this new information. Our 2-D Win95/98 software program, Biofilter 1.0, developed as a part …
Date: June 15, 2001
Creator: Davison, Brian H. & Barton, John W.
Object Type: Report
System: The UNT Digital Library
Bioterrorism: The Centers for Disease Control and Prevention's Role in Public Health Protection (open access)

Bioterrorism: The Centers for Disease Control and Prevention's Role in Public Health Protection

A statement of record issued by the General Accounting Office with an abstract that begins "Federal research and preparedness activities related to bioterrorism center on detection; the development of vaccines, antibiotics, and antivirals; and the development of performance standards for emergency response equipment. Preparedness activities include (1) increasing federal, state, and local response capabilities; (2) developing response teams; (3) increasing the availability of medical treatments; (4) participating in and sponsoring exercises; (5) aiding victims; and (6) providing support at special events, such as presidential inaugurations and Olympic games. To coordinate their efforts to combat terrorism, federal agencies are developing interagency response plans, participating in various interagency work groups, and entering into formal agreements with other agencies to share resources and capabilities. However, coordination of federal terrorism research, preparedness, and response programs is fragmented, raising concerns about the ability of states and localities to respond to a bioterrorist attack. These concerns include insufficient state and local planning and a lack of hospital participation in training on terrorism and emergency response planning. This testimony summarizes a September 2001 report (GAO-01-915)."
Date: November 15, 2001
Creator: United States. General Accounting Office.
Object Type: Text
System: The UNT Digital Library
Borehole Data Package for Calendar Year 2000 - 2001 RCRA Wells at Single-Shell Tank Waste Management Area S-SX (open access)

Borehole Data Package for Calendar Year 2000 - 2001 RCRA Wells at Single-Shell Tank Waste Management Area S-SX

Six new resource conservation and Recovery Act (RCRA) groundwater monitoring wells were installed at the single-shell tank farm Waste Management Area S-SX in July 2000 through March 2001 in partial fulfillment of Tri-Party Agreement milestones M-24-00L and M-24-00M. This document describes the drilling, construction, sampling and analyses of samples from the wells.
Date: August 15, 2001
Creator: Horton, Duane G. & Johnson, Vernon G.
Object Type: Report
System: The UNT Digital Library
Borehole Data Package for Calendar Year 2000 - 2001 RCRA Wells at Single-Shell Tank Waste Management Area S-SX (open access)

Borehole Data Package for Calendar Year 2000 - 2001 RCRA Wells at Single-Shell Tank Waste Management Area S-SX

Six new resource conservation and Recovery Act (RCRA) groundwater monitoring wells were installed at the single-shell tank farm Waste Management Area S-SX in July 2000 through March 2001 in partial fulfillment of Tri-Party Agreement milestones M-24-00L and M-24-00M. This document describes the drilling, construction, sampling and analyses of samples from the wells.
Date: August 15, 2001
Creator: Horton, Duane G & Johnson, Vernon G
Object Type: Report
System: The UNT Digital Library
Borehole Data Package for Calendar Year 2000-2001 RCRA Wells at Single-Shell Tank Waste Management Area T (open access)

Borehole Data Package for Calendar Year 2000-2001 RCRA Wells at Single-Shell Tank Waste Management Area T

This document compiles information of the drilling and construction, well development, pump installation, and sediment and groundwater sampling applicable to the installation of five new RCRA wells in calendar year 2000 - 2001. Appendix A contains the Well Summary Sheets (as-built diagrams); the Well Construction Summary Reports, and the geologist's logs; Appendix B contains physical properties data; and Appendix C contains the borehole geophysical logs.
Date: August 15, 2001
Creator: Horton, Duane G. & Hodges, Floyd N.
Object Type: Report
System: The UNT Digital Library
Borehole Data Package for Calendar Year 2000-2001 RCRA Wells at Single-Shell Tank Waste Management Area T (open access)

Borehole Data Package for Calendar Year 2000-2001 RCRA Wells at Single-Shell Tank Waste Management Area T

This document compiles information of the drilling and construction, well development, pump installation, and sediment and groundwater sampling applicable to the installation of five new RCRA wells in calendar year 2000 - 2001. Appendix A contains the Well Summary Sheets (as-built diagrams); the Well Construction Summary Reports, and the geologist's logs; Appendix B contains physical properties data; and Appendix C contains the borehole geophysical logs.
Date: August 15, 2001
Creator: Horton, Duane G & Hodges, Floyd N
Object Type: Report
System: The UNT Digital Library
Borehole Data Package for Calendar Year 2000-2001 RCRA Wells at Single-Shell Tank Waste Management Area TX-TY (open access)

Borehole Data Package for Calendar Year 2000-2001 RCRA Wells at Single-Shell Tank Waste Management Area TX-TY

This document compiles information on the drilling and construction, well development, pump installation, and sediment and groundwater sampling applicable to the installation of five new RCRA wells in calendar year 2000 - 2001 at WMA TX-TY. Appendix A contains the Well Summary Sheets (as-built diagrams), the Well Construction Summary Reports, and the geologist's logs; Appendix B contains physical properties data; and Appendix C contains the borehole geophysical logs.
Date: August 15, 2001
Creator: Horton, Duane G & Hodges, Floyd N
Object Type: Report
System: The UNT Digital Library
Borehole Data Package for Calendar Year 2000-2001 RCRA Wells at Single-Shell Tank Waste Management Area TX-TY (open access)

Borehole Data Package for Calendar Year 2000-2001 RCRA Wells at Single-Shell Tank Waste Management Area TX-TY

This document compiles information on the drilling and construction, well development, pump installation, and sediment and groundwater sampling applicable to the installation of five new RCRA wells in calendar year 2000 - 2001 at WMA TX-TY. Appendix A contains the Well Summary Sheets (as-built diagrams), the Well Construction Summary Reports, and the geologist's logs; Appendix B contains physical properties data; and Appendix C contains the borehole geophysical logs.
Date: August 15, 2001
Creator: Horton, Duane G. & Hodges, Floyd N.
Object Type: Report
System: The UNT Digital Library
Budget Issues: Budget Enforcement Compliance Report (open access)

Budget Issues: Budget Enforcement Compliance Report

A letter report issued by the General Accounting Office with an abstract that begins "This report assesses the compliance by the Office of Management and Budget (OMB) and the Congressional Budget Office (CBO) with the requirements of the Balanced Budget and Emergency Deficit Control Act of 1985. Overall, GAO found that OMB and CBO substantially complied with the act, although some of the required OMB and CBO reports were issued late. GAO's work was done in accordance with generally accepted government auditing standards."
Date: June 15, 2001
Creator: United States. General Accounting Office.
Object Type: Report
System: The UNT Digital Library
CALCIUM CARBONATE PRODUCTION BY COCCOLITHOPHORID ALGAE IN LONG TERM, CARBON DIOXIDE SEQUESTRATION (open access)

CALCIUM CARBONATE PRODUCTION BY COCCOLITHOPHORID ALGAE IN LONG TERM, CARBON DIOXIDE SEQUESTRATION

Predictions of increasing levels of anthropogenic carbon dioxide (CO{sub 2}) and the specter of global warming have intensified research efforts to identify ways to sequester carbon. A number of novel avenues of research are being considered, including bioprocessing methods to promote and accelerate biosequestration of CO{sub 2} from the environment through the growth of organisms such as coccolithophorids, which are capable of sequestering CO{sub 2} relatively permanently. Calcium and magnesium carbonates are currently the only proven, long-term storage reservoirs for carbon. Whereas organic carbon is readily oxidized and releases CO{sub 2} through microbial decomposition on land and in the sea, carbonates can sequester carbon over geologic time scales. This proposal investigates the use of coccolithophorids--single-celled, marine algae that are the major global producers of calcium carbonate--to sequester CO{sub 2} emissions from power plants. Cultivation of coccolithophorids for calcium carbonate (CaCO{sub 3}) precipitation is environmentally benign and results in a stable product with potential commercial value. Because this method of carbon sequestration does not impact natural ecosystem dynamics, it avoids controversial issues of public acceptability and legality associated with other options such as direct injection of CO{sub 2} into the sea and ocean fertilization. Consequently, cultivation of coccolithophorids could be carried …
Date: December 15, 2001
Creator: V.J. Fabry, Ph.D.
Object Type: Report
System: The UNT Digital Library
Calculating Contained Firing Facility (CFF) Explosive Firing Zones (open access)

Calculating Contained Firing Facility (CFF) Explosive Firing Zones

Revision 1 of this document presented a method of calculating the CFF explosive firing zones that was based upon the peak average pressure on the various elements of the firing chamber as explosive weights and locations are changed. That document was reviewed internally at LLNL and reviewed by the design contractor of the facility. The contractor's responses generally confirmed the validity of the peak average pressure method, but noted that the shearing stresses at haunches may exceed the design values when explosive charges are moved towards comers. The concept of a dynamic load factor is introduced in the dynamic analysis section of Reference 5. A method is shown there whereby the response of the major elements of construction can be calculated from the knowledge of the peak average blast pressure averaged over the surface considered. the length of the pulse, and the natural period of vibration of the element. Quazi Hossain also suggested this method of analysis in Reference 2. The major elements of the Firing Chamber are the four walls, floor, roof slab, camera room overlay structure, inclined plate, bullnose, and the two doors. Except for the bullnose, their response has been calculated for a number of explosive weights …
Date: February 15, 2001
Creator: Lyle, J. W.
Object Type: Report
System: The UNT Digital Library
CALORIMETRY FOR GLOBAL MEASUREMENTS IN PHENIX. (open access)

CALORIMETRY FOR GLOBAL MEASUREMENTS IN PHENIX.

The charged particle multiplicity, dN{sub ch}/d{eta}, and transverse energy, E{sub t}, are fundamental aspects of Heavy Ion collisions which PHENIX has measured in Au-Au collisions at a center-of-mass (c.m.s.) energy {radical}s{sub N}N = 130 GeV. E{sub t} is a multiparticle global observable related, through the Bjorken relation, to the maximum energy density achieved in the collision. For a given c.m.s. energy, the multiplicity and transverse energy are expected to increase with the number of nucleons participating in a collision (n{sub part}). The dependence on n{sub part} is found to be (dE{sub t}/d{eta}, dN{sub ch}/d{eta}) {approx} n{sub part}{sup {alpha}}, where {alpha} is larger than unity. This rapid growth (i.e. more rapid than linear) is not surprising in the collision of large nuclei since an individual participant nucleon may undergo more than one collision. The variable n{sub collision} is also introduced to denote the number of binary collisions. Whereas n{sub part} can be directly measured, in principle, directly from the number of non-participating nucleons detected in the forward direction, n{sub collision} is not observable but can be calculated statistically from n{sub part}, using the Glauber model.
Date: January 15, 2001
Creator: WHITE,S.N. FOR PHENIX COLLABORATION
Object Type: Article
System: The UNT Digital Library
Carbon Dioxide Information Analysis Center and World Data Center for Atmospheric Trace Gases Fiscal Year 2000 Annual Report (open access)

Carbon Dioxide Information Analysis Center and World Data Center for Atmospheric Trace Gases Fiscal Year 2000 Annual Report

The Carbon Dioxide Information Analysis Center (CDIAC), which includes the World Data Center (WDC) for Atmospheric Trace Gases, is the primary global change data and information analysis center of the U.S. Department of Energy (DOE). More than just an archive of data sets and publications, CDIAC has, since its inception in 1982, enhanced the value of its holdings through intensive quality assurance, documentation, and integration. Whereas many traditional data centers are discipline-based (for example, meteorology or oceanography), CDIAC's scope includes potentially anything and everything that would be of value to users concerned with the greenhouse effect and global climate change, including concentrations of carbon dioxide (CO{sub 2}) and other radiatively active gases in the atmosphere; the role of the terrestrial biosphere and the oceans in the biogeochemical cycles of greenhouse gases; emissions of CO{sub 2} and other trace gases to the atmosphere; long-term climate trends; the effects of elevated CO{sub 2} on vegetation; and the vulnerability of coastal areas to rising sea levels.
Date: November 15, 2001
Creator: Cushman, R.M.
Object Type: Report
System: The UNT Digital Library