EVALUATING ENVIRONMENTAL DECISION SUPPORT TOOLS. (open access)

EVALUATING ENVIRONMENTAL DECISION SUPPORT TOOLS.

Effective contaminated land management requires a number of decisions addressing a suite of technical, economic, and social concerns. These concerns include human health risks, ecological risks, economic costs, technical feasibility of proposed remedial actions, and the value society places on clean-up and re-use of formerly contaminated lands. Decision making, in the face of uncertainty and multiple and often conflicting objectives, is a vital and challenging role in environmental management that affects a significant economic activity. Although each environmental remediation problem is unique and requires a site-specific analysis, many of the key decisions are similar in structure. This has led many to attempt to develop standard approaches. As part of the standardization process, attempts have been made to codify specialist expertise into decision support tools. This activity is intended to facilitate reproducible and transparent decision making. The process of codifying procedures has also been found to be a useful activity for establishing and rationalizing management processes. This study will have two primary objectives. The first is to develop taxonomy for Decision Support Tools (DST) to provide a framework for understanding the different tools and what they are designed to address in the context of environmental remediation problems. The taxonomy will have …
Date: October 1, 2004
Creator: SULLIVAN, T.
Object Type: Report
System: The UNT Digital Library
Activities and Accomplishments in MY 2004/FY 2005 (open access)

Activities and Accomplishments in MY 2004/FY 2005

From vehicle acquisition and credit trading to exemptions and outreach activity, the Annual Report summarizes the State & Alternative Fuel Provider Activity's accomplishments during MY 2004/FY 2005.
Date: October 1, 2005
Creator: unknown
Object Type: Report
System: The UNT Digital Library
National Ignition Facility Configuration Management Plan (open access)

National Ignition Facility Configuration Management Plan

This Configuration Management Plan (CMP) describes the technical and administrative management process for controlling the National Ignition Facility (NIF) Project configuration. The complexity of the NIF Project (i.e., participation by multiple national laboratories and subcontractors involved in the development, fabrication, installation, and testing of NIF hardware and software, as well as construction and testing of Project facilities) requires implementation of the comprehensive configuration management program defined in this plan. A logical schematic illustrating how the plan functions is provided in Figure 1. A summary of the process is provided in Section 4.0, Configuration Change Control. Detailed procedures that make up the overall process are referenced. This CMP is consistent with guidance for managing a project's configuration provided in Department of Energy (DOE) Order 430.1, Guide PMG 10, ''Project Execution and Engineering Management Planning''. Configuration management is a formal discipline comprised of the following four elements: (1) Identification--defines the functional and physical characteristics of a Project and uniquely identifies the defining requirements. This includes selection of components of the end product(s) subject to control and selection of the documents that define the project and components. (2) Change management--provides a systematic method for managing changes to the project and its physical and …
Date: October 1, 2002
Creator: Cabral, S. G. & Moore, T. L.
Object Type: Report
System: The UNT Digital Library
DOE Hydrogen Program 2004 Annual Merit Review and Peer Evaluation Report (open access)

DOE Hydrogen Program 2004 Annual Merit Review and Peer Evaluation Report

This document summarizes the project evaluations and comments from the DOE Hydrogen Program 2004 Annual Program Review. Hydrogen production, delivery and storage; fuel cells; technology validation; safety, codes and standards; and education R&D projects funded by DOE in FY2004 are reviewed.
Date: October 1, 2004
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Program and Abstracts: DOE Solar Program Review Meeting 2004, 25--28 October 2004, Denver, Colorado (open access)

Program and Abstracts: DOE Solar Program Review Meeting 2004, 25--28 October 2004, Denver, Colorado

This booklet contains the agenda and abstracts for the 2004 U.S. DOE Solar Energy Technologies Program Review Meeting. The meeting was held in Denver, Colorado, October 25-28, 2004. More than 240 abstracts are contained in this publication. Topic areas for the research papers include laboratory research, program management, policy analysis, and deployment of solar technologies.
Date: October 1, 2004
Creator: unknown
Object Type: Book
System: The UNT Digital Library
University of Wisconsin-Madison: Distributed Resources to Meet Demands of High-Value Power (open access)

University of Wisconsin-Madison: Distributed Resources to Meet Demands of High-Value Power

Summarizes the University of Wisconsin-Madison's work under contract to DOE's Distribution and Interconnection R&D to demonstrate the value of distributed resources for high-value power.
Date: October 1, 2003
Creator: unknown
Object Type: Text
System: The UNT Digital Library
Pump Selection Considerations (open access)

Pump Selection Considerations

BestPractices Program tip sheet discussing pumping system efficiency with pumping selection considerations.
Date: October 1, 2005
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Production LHC HTS power lead test results (open access)

Production LHC HTS power lead test results

The Fermilab Magnet test facility has built and operated a test stand to characterize the performance of HTS power leads. We report here the results of production tests of 20 pairs of 7.5 kA HTS power leads manufactured by industry for installation in feed boxes for the LHC Interaction Region quadrupole strings. Included are discussions of the thermal, electrical, and quench characteristics under ''standard'' and ''extreme'' operating conditions, and the stability of performance across thermal cycles.
Date: October 1, 2004
Creator: Tartaglia, M. A.; Carcagno, R. H.; Feher, S.; Huang, Y.; Orris, D. F.; Pischalnikov, Y. et al.
Object Type: Article
System: The UNT Digital Library
Implicit Monte Carlo diffusion - an acceleration method for Monte Carlo time dependent radiative transfer simulations (open access)

Implicit Monte Carlo diffusion - an acceleration method for Monte Carlo time dependent radiative transfer simulations

We present a method for accelerating time dependent Monte Carlo radiative transfer calculations by using a discretization of the diffusion equation to calculate probabilities that are used to advance particles in regions with small mean free path. The method is demonstrated on problems with on 1 and 2 dimensional orthogonal grids. It results in decreases in run time of more than an order of magnitude on these problems, while producing answers with accuracy comparable to pure IMC simulations. We call the method Implicit Monte Carlo Diffusion, which we abbreviate IMD.
Date: October 1, 2000
Creator: Gentile, N. A.
Object Type: Article
System: The UNT Digital Library
Evaluation of the Geothermal Public Power Utility Workshops in California (open access)

Evaluation of the Geothermal Public Power Utility Workshops in California

The federal government devotes significant resources to educating consumers and businesses about geothermal energy. Yet little evidence exists for defining the kinds of information needed by the various audiences with specialized needs. This paper presents the results of an evaluation of the Geothermal Municipal Utility Workshops that presented information on geothermal energy to utility resource planners at customer-owned utilities in California. The workshops were sponsored by the Western Area Power Administration and the U.S. Department of Energy's GeoPowering the West Program and were intended to qualitatively assess the information needs of municipal utilities relative to geothermal energy and get feedback for future workshops. The utility workshop participants found the geothermal workshops to be useful and effective for their purposes. An important insight from the workshops is that utilities need considerable lead-time to plan a geothermal project. They need to know whether it is better to own a project or to purchase geothermal electricity from another nonutility owner. California customer-owned utilities say they do not need to generate more electricity to meet demand, but they do need to provide more electricity from renewable resources to meet the requirements of the state's Renewable Portfolio Standard.
Date: October 1, 2004
Creator: Farhar, B. C.
Object Type: Report
System: The UNT Digital Library
Superconducting multipole corrector magnet (open access)

Superconducting multipole corrector magnet

A novel concept of superconducting multipole corrector magnet is discussed. This magnet assembled from 12 identical racetrack type coils and can generate any combination of dipole, quadrupole and sextupole magnetic fields. The coil groups are powered from separate power supplies. In the case of normal dipole, quadrupole and sextupole fields the total field is symmetrical relatively the magnet median plane and there are only five powered separately coil groups. This type multipole corrector magnet was proposed for BTeV, Fermilab project and has following advantages: universal configuration, simple manufacturing and high mechanical stability. The results of magnetic design including the field quality and magnetic forces in comparison with known shell type superconducting correctors are presented.
Date: October 1, 2004
Creator: Kashikhin, Vladimir
Object Type: Article
System: The UNT Digital Library
PROTEIN QUALITY CONTROL IN BACTERIAL CELLS: INTEGRATED NETWORKS OF CHAPERONES AND ATP-DEPENDENT PROTEASES. (open access)

PROTEIN QUALITY CONTROL IN BACTERIAL CELLS: INTEGRATED NETWORKS OF CHAPERONES AND ATP-DEPENDENT PROTEASES.

It is generally accepted that the information necessary to specify the native, functional, three-dimensional structure of a protein is encoded entirely within its amino acid sequence; however, efficient reversible folding and unfolding is observed only with a subset of small single-domain proteins. Refolding experiments often lead to the formation of kinetically-trapped, misfolded species that aggregate, even in dilute solution. In the cellular environment, the barriers to efficient protein folding and maintenance of native structure are even larger due to the nature of this process. First, nascent polypeptides must fold in an extremely crowded environment where the concentration of macromolecules approaches 300-400 mg/mL and on average, each ribosome is within its own diameter of another ribosome (1-3). These conditions of severe molecular crowding, coupled with high concentrations of nascent polypeptide chains, favor nonspecific aggregation over productive folding (3). Second, folding of newly-translated polypeptides occurs in the context of their vehtorial synthesis process. Amino acids are added to a growing nascent chain at the rate of {approx}5 residues per set, which means that for a 300 residue protein its N-terminus will be exposed to the cytosol {approx}1 min before its C-terminus and be free to begin the folding process. However, because protein …
Date: October 1, 2002
Creator: Flanagan, J. M. & Bewley, M. C.
Object Type: Book
System: The UNT Digital Library
EPRI PEAC Corp.: Certification Model Program and Interconnection Agreement Tools (open access)

EPRI PEAC Corp.: Certification Model Program and Interconnection Agreement Tools

Summarizes the work of EPRI PEAC Corp., under contract to DOE's Distribution and Interconnection R&D, to develop a certification model program and interconnection agreement tools to support the interconnection of distributed energy resources.
Date: October 1, 2003
Creator: unknown
Object Type: Text
System: The UNT Digital Library
Improving Steam System Performance: A Sourcebook for Industry (open access)

Improving Steam System Performance: A Sourcebook for Industry

A sourcebook designed to provide steam system users with a reference outlining opportunities to improve system performance and optimize energy efficiency in industrial energy systems.
Date: October 1, 2004
Creator: unknown
Object Type: Book
System: The UNT Digital Library
Chemical Sensing Using Infrared Cavity Enhanced Spectroscopy: Short Wave Infrared Cavity Ring Down Spectroscopy (SWIR CRDS) Sensor (open access)

Chemical Sensing Using Infrared Cavity Enhanced Spectroscopy: Short Wave Infrared Cavity Ring Down Spectroscopy (SWIR CRDS) Sensor

The principal goal of Pacific Northwest National Laboratory's (PNNL's) Remote Spectroscopy Project is to explore and develop the science and technology behind point and stand off infrared (IR) spectroscopic chemical sensors that are needed for detecting weapons proliferation activity and countering terrorism. Missions addressed include detecting chemical, biological, and nuclear weapons and their production; counter terrorism measures that involve screening luggage, personnel, and shipping containers for explosives, firearms, narcotics, chemical weapons and/or their residues; and mapping of contaminated areas. The science and technology developed in this program is dual use in that it additionally supports progress in a diverse set of agendas that include chemical weapons defense programs, air operations activities, emissions monitoring, law enforcement, and medical diagnostics. Sensors for these missions require extremely low limits of detection because many of the targeted signature species are either present in low concentrations or have extremely low vapor pressures. The sensors also need to be highly selective as the environments that they will be operated in will contain a variety of interferent species and false positive detection is not an option. PNNL has been working on developing a class of sensors that draw vapor into optical cavities and use laser-based spectroscopy to …
Date: October 1, 2003
Creator: Williams, Richard M.; Harper, Warren W.; Aker, Pam M.; Thompson, Jason S. & Stewart, Timothy L.
Object Type: Report
System: The UNT Digital Library
Multiscale thermohydrologic model: addressing variability and uncertainty at Yucca Mountain (open access)

Multiscale thermohydrologic model: addressing variability and uncertainty at Yucca Mountain

Performance assessment and design evaluation require a modeling tool that simultaneously accounts for processes occurring at a scale of a few tens of centimeters around individual waste packages and emplacement drifts, and also on behavior at the scale of the mountain. Many processes and features must be considered, including non-isothermal, multiphase-flow in rock of variable saturation and thermal radiation in open cavities. Also, given the nature of the fractured rock at Yucca Mountain, a dual-permeability approach is needed to represent permeability. A monolithic numerical model with all these features requires too large a computational cost to be an effective simulation tool, one that is used to examine sensitivity to key model assumptions and parameters. We have developed a multi-scale modeling approach that effectively simulates 3D discrete-heat-source, mountain-scale thermohydrologic behavior at Yucca Mountain and captures the natural variability of the site consistent with what we know from site characterization and waste-package-to-waste-package variability in heat output. We describe this approach and present results examining the role of infiltration flux, the most important natural-system parameter with respect to how thermohydrologic behavior influences the performance of the repository.
Date: October 1, 2000
Creator: Buscheck, T; Rosenberg, N D; Gansemer, J D & Sun, Y
Object Type: Article
System: The UNT Digital Library
Executive Summary: Assessment of Parabolic Trough and Power Tower Solar Technology Cost and Performance Forecasts (open access)

Executive Summary: Assessment of Parabolic Trough and Power Tower Solar Technology Cost and Performance Forecasts

Sargent& Lundy LLC conducted an independent analysis of parabolic trough and power tower solar technology cost and performance.
Date: October 1, 2003
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Gas Technology Institute and Encorp Inc.: Innovative Interconnection and Control Systems (open access)

Gas Technology Institute and Encorp Inc.: Innovative Interconnection and Control Systems

Summarizes the work of the Gas Technology Institute and Encorp Inc., under contract to DOE's Distribution and Interconnection R&D, to develop interconnection and control systems for distributed power.
Date: October 1, 2003
Creator: unknown
Object Type: Text
System: The UNT Digital Library
National Ignition Facility Management Descriptions, Revision 7 (open access)

National Ignition Facility Management Descriptions, Revision 7

The purpose of this document is to describe the National Ignition Facility (NIF) Project Organization and the top level roles and responsibilities of the managers charged with executing the Project.
Date: October 1, 2001
Creator: Moses, E & Harri, J
Object Type: Report
System: The UNT Digital Library
An AFM investigation of the interaction of chiral amino acids with the {l_brace}104{r_brace} face of calcite (open access)

An AFM investigation of the interaction of chiral amino acids with the {l_brace}104{r_brace} face of calcite

In biomineralized tissue, Nature often uses a single crystal system to form tools with widely varied form and functionality. To accomplish this, organisms have developed methods to deterministically modify and control crystal habit, commonly creating shapes with lower symmetry than is possessed by the pure crystal. In this paper we use atomic force microscopy to investigate the effect of chiral amino acids on calcite growth. We show that the atomic steps and resultant macroscopic shape exhibit a lower symmetry that reflects the chirality of the amino acid. We use this result to constrain the possible stereospecific binding sites. We argue that the change in morphology is not due to the incorporation of the amino acid, but rather that it acts like a surfactant changing the energetics of the interface. These results suggest that the conventional paradigm for understanding the geometrical and chemical aspects of biomineralization in terms of stereochemical recognition should be expanded to capture the energetic controls that determine the mechanisms of mineral modification by biomolecules.
Date: October 1, 2000
Creator: Orme, C A; Noy, A; McBride, M T & DeYoreo, J J
Object Type: Article
System: The UNT Digital Library
Cable testing for Fermilab's high field magnets using small racetrack coils (open access)

Cable testing for Fermilab's high field magnets using small racetrack coils

As part of the High Field Magnet program at Fermilab simple magnets have been designed utilizing small racetrack coils based on a sound mechanical structure and bladder technique developed by LBNL. Two of these magnets have been built in order to test Nb{sub 3}Sn cables used in cos-theta dipole models. The powder-in-tube strand based cable exhibited excellent performance. It reached its critical current limit within 14 quenches. Modified jelly roll strand based cable performance was limited by magnetic instabilities at low fields as previously tested dipole models which used similar cable.
Date: October 1, 2004
Creator: Feher, S.; Ambrosio, G.; Andreev, N.; Barzi, E.; Bordini, B.; Bossert, R. et al.
Object Type: Article
System: The UNT Digital Library
Measurement of the W + gamma Production in Proton - Anti-proton Collisions at s**(1/2) = 1.96-TeV (open access)

Measurement of the W + gamma Production in Proton - Anti-proton Collisions at s**(1/2) = 1.96-TeV

The authors present a measurement of the {bar p}p {yields} W{gamma} + X {yields} e{nu}{gamma} + X production cross section using data form the Collider Detector at Fermilab. The p{bar p} collisions were provided by the Tevatron Collider at a center of mass energy of 1.96 TeV. Electroweak theory includes the trilinear vector boson coupling, WW{gamma}, which contributes to the e{nu}{gamma} final state. The electron decay channel of the W provides a clean sample to study the production of diboson pairs. The measurement of the production cross section tests the structure of the non-Abelian character of Electroweak theory.
Date: October 1, 2004
Creator: Kirby, Michael H. & U., /Duke
Object Type: Thesis or Dissertation
System: The UNT Digital Library
A Fusion Chamber for the 2002 Robust Point Design (open access)

A Fusion Chamber for the 2002 Robust Point Design

A top-level overview of the mechanical design for the 2002 Robust Point Design (RPD-2002) fusion chamber is introduced. It is based on the HYLIFE-II design and includes modifications to the liquid pocket configuration and first structural wall (FSW), facilitates periodic maintenance or replacement of internal components, and is compliant with all other RPD-2002 parameters. This work has been carried out by constructing a parametric computer model capable of being updated as future changes become necessary.
Date: October 1, 2003
Creator: Abbott, R P
Object Type: Article
System: The UNT Digital Library
Determination of Reactive Surface Area of Melt Glass (open access)

Determination of Reactive Surface Area of Melt Glass

A comprehensive investigation of natural and manmade silicate glasses, and nuclear melt glass was undertaken in order to derive an estimate of glass reactive surface area. Reactive surface area is needed to model release rates of radionuclides from nuclear melt glass in the subsurface. Because of the limited availability of nuclear melt glasses, natural volcanic glass samples were collected which had similar textures and compositions as those of melt glass. A flow-through reactor was used to measure the reactive surface area of the analog glasses in the presence of simplified NTS site ground waters. A measure of the physical surface area of these glasses was obtained using the BET gas-adsorption method. The studies on analog glasses were supplemented by measurement of the surface areas of pieces of actual melt glass using the BET method. The variability of the results reflect the sample preparation and measurement techniques used, as well as textural heterogeneity inherent to these samples. Based on measurements of analog and actual samples, it is recommended that the hydraulic source term calculations employ a range of 0.001 to 0.01 m{sup 2}/g for the reactive surface area of nuclear melt glass.
Date: October 1, 2000
Creator: Bourcier,W. L.; Roberts, S.; Smith, D. K.; Hulsey, S.; Newton,L.; Sawvel, A. et al.
Object Type: Report
System: The UNT Digital Library