Tools for Predicting Optical Damage on Inertial Confinement Fusion-Class Laser Systems (open access)

Tools for Predicting Optical Damage on Inertial Confinement Fusion-Class Laser Systems

Operating a fusion-class laser to its full potential requires a balance of operating constraints. On the one hand, the total laser energy delivered must be high enough to give an acceptable probability for ignition success. On the other hand, the laser-induced optical damage levels must be low enough to be acceptably handled with the available infrastructure and budget for optics recycle. Our research goal was to develop the models, database structures, and algorithmic tools (which we collectively refer to as ''Loop Tools'') needed to successfully maintain this balance. Predictive models are needed to plan for and manage the impact of shot campaigns from proposal, to shot, and beyond, covering a time span of years. The cost of a proposed shot campaign must be determined from these models, and governance boards must decide, based on predictions, whether to incorporate a given campaign into the facility shot plan based upon available resources. Predictive models are often built on damage ''rules'' derived from small beam damage tests on small optics. These off-line studies vary the energy, pulse-shape and wavelength in order to understand how these variables influence the initiation of damage sites and how initiated damage sites can grow upon further exposure to …
Date: December 20, 2010
Creator: Nostrand, M. C.; Carr, C. W.; Liao, Z. M.; Honig, J.; Spaeth, M. L.; Manes, K. R. et al.
Object Type: Report
System: The UNT Digital Library
U.S. Arms Sales: Agreements with and Deliveries to Major Clients, 2002-2009 (open access)

U.S. Arms Sales: Agreements with and Deliveries to Major Clients, 2002-2009

This report provides background data on U.S. arms sales agreements with and deliveries to its major purchasers during calendar years 2002-2009, made through the U.S. Foreign Military Sales (FMS) program.
Date: December 20, 2010
Creator: Grimmett, Richard F.
Object Type: Report
System: The UNT Digital Library
U.S. Immigration Policy on Permanent Admissions (open access)

U.S. Immigration Policy on Permanent Admissions

This report discusses the four major principles underlie current U.S. policy on permanent immigration: the reunification of families, the admission of immigrants with needed skills, the protection of refugees, and the diversity of admissions by country of origin. Against competing priorities for increased immigration are those who offer options to scale back immigration levels, with options ranging from limiting family-based legal permanent residents to the immediate relatives of U.S. citizens to confining employment-based legal permanent residents exceptional, extraordinary, or outstanding individuals.
Date: December 20, 2010
Creator: Wasem, Ruth Ellen
Object Type: Report
System: The UNT Digital Library
U.S. National Science Foundation: An Overview (open access)

U.S. National Science Foundation: An Overview

The National Science Foundation (NSF) was created by the National Science Foundation Act of 1950, as amended (P.L.81-507). The NSF has the broad mission of supporting science and engineering in general and funding basic research across many disciplines. The agency provides support for investigator-initiated, merit-reviewed, competitively selected awards, state-of-the-art tools, and instrumentation and facilities. The majority of the research supported by the NSF is conducted at U.S. colleges and universities. Approximately 82.7% ($3,320.5 million) of NSF's FY2007 $4,049.4 million research and development (R&D) budget was awarded to U.S. colleges and universities.
Date: December 20, 2010
Creator: Matthews, Christine M.
Object Type: Report
System: The UNT Digital Library
The United Arab Emirates Nuclear Program and Proposed U.S. Nuclear Cooperation (open access)

The United Arab Emirates Nuclear Program and Proposed U.S. Nuclear Cooperation

This report provides background information on the UAE nuclear program, reviews developments to date, analyzes proposed nuclear cooperation with the United States, and discusses relevant legislative proposals and options.
Date: December 20, 2010
Creator: Blanchard, Christopher M. & Kerr, Paul K.
Object Type: Report
System: The UNT Digital Library
Use of Frequency Response Metrics to Assess the Planning and Operating Requirements for Reliable Integration of Variable Renewable Generation (open access)

Use of Frequency Response Metrics to Assess the Planning and Operating Requirements for Reliable Integration of Variable Renewable Generation

An interconnected electric power system is a complex system that must be operated within a safe frequency range in order to reliably maintain the instantaneous balance between generation and load. This is accomplished by ensuring that adequate resources are available to respond to expected and unexpected imbalances and restoring frequency to its scheduled value in order to ensure uninterrupted electric service to customers. Electrical systems must be flexible enough to reliably operate under a variety of"change" scenarios. System planners and operators must understand how other parts of the system change in response to the initial change, and need tools to manage such changes to ensure reliable operation within the scheduled frequency range. This report presents a systematic approach to identifying metrics that are useful for operating and planning a reliable system with increased amounts of variable renewable generation which builds on existing industry practices for frequency control after unexpected loss of a large amount of generation. The report introduces a set of metrics or tools for measuring the adequacy of frequency response within an interconnection. Based on the concept of the frequency nadir, these metrics take advantage of new information gathering and processing capabilities that system operators are developing for …
Date: December 20, 2010
Creator: Eto, Joseph H.; Undrill, John; Mackin, Peter; Daschmans, Ron; Williams, Ben; Haney, Brian et al.
Object Type: Report
System: The UNT Digital Library
Coordination of Endoplasmic Reticulum (ER) Signaling During Maize Seed Development (open access)

Coordination of Endoplasmic Reticulum (ER) Signaling During Maize Seed Development

Seed storage reserves represent one of the most important sources of renewable fixed carbon and nitrogen found in nature. Seeds are well-adapted for diverting metabolic resources to synthesize storage proteins as well as enzymes and structural proteins needed for their transport and packaging into membrane bound storage protein bodies. Our underlying hypothesis is that the endoplasmic reticulum (ER) stress response provides the critical cellular control of metabolic flux required for optimal accumulation of storage reserves in seeds. This highly conserved response is a cellular mechanism to monitor the protein folding environment of the ER and restore homeostasis in the presence of unfolded or misfolded proteins. In seeds, deposition of storage proteins in protein bodies is a highly specialized process that takes place even in the presence of mutant proteins that no longer fold and package properly. The capacity of the ER to deposit these aberrant proteins in protein bodies during a period that extends several weeks provides an excellent model for deconvoluting the ER stress response of plants. We have focused in this project on the means by which the ER senses and responds to functional perturbations and the underlying intracellular communication that occurs among biosynthetic, trafficking and degradative pathways …
Date: November 20, 2010
Creator: Boston, Rebecca S.
Object Type: Report
System: The UNT Digital Library
Ambient Monitoring for Sinclair and Dyes Inlets, Puget Sound, Washington: Chemical Analyses for 2010 Regional Mussel Watch (AMB02) (open access)

Ambient Monitoring for Sinclair and Dyes Inlets, Puget Sound, Washington: Chemical Analyses for 2010 Regional Mussel Watch (AMB02)

The Puget Sound Naval Shipyard & Intermediate Maintenance Facility (PSNS&IMF) and Naval Base Kitsap-Bremerton (Shipyard) located in Bremerton, WA are committed to a culture of continuous process improvement for all aspects of Shipyard operations, including reducing the releases of hazardous materials and waste in discharges from the Shipyard. Under the Project ENVVEST Final Project Agreement, a cooperative project among PSNS&IMF, the Environmental Protection Agency (EPA), and the Washington State Department of Ecology (Ecology), and local stakeholders (US Navy, EPA and Ecology 2002) has been helping to improve the environmental quality of the Sinclair and Dyes Inlet Watershed (ENVVEST 2006). An ambient monitoring program for sediment, water, and indigenous mussels began in 2009 to assess the status and trend of ecological resources, assess the effectiveness of cleanup and pollution control measures, and determine if discharges from all sources are protective of beneficial uses including aquatic life. This document presents the 2010 chemical residue data and stable isotopes of carbon (δ13C) and nitrogen (δ15N) for the regional mussel watch stations located in Sinclair Inlet, Dyes Inlet, Port Orchard Passage, Rich Passage, Agate Passage, Liberty Bay, and Keyport Lagoon. Indigenous bivalves were collected from a small boat and/or from along the shoreline, measured, …
Date: October 20, 2010
Creator: Brandenberger, Jill M.; Kuo, Li-Jung; Suslick, Carolynn R. & Johnston, Robert K.
Object Type: Report
System: The UNT Digital Library

ARRA Fuel Cell Deployment and Operation

This presentation summarizes ARRA fuel cell deployment and operation.
Date: October 20, 2010
Creator: Kurtz, J.; Wipke, K.; Sprik, S. & Ramsden, T.
Object Type: Presentation
System: The UNT Digital Library
Comment on "Wall Forces Produced During ITER Disruptions" by H. R. Strauss, R. Paccagnella, and J. Breslau (PHYSICS OF PLASMAS 17, 082505 (2010) (open access)

Comment on "Wall Forces Produced During ITER Disruptions" by H. R. Strauss, R. Paccagnella, and J. Breslau (PHYSICS OF PLASMAS 17, 082505 (2010)

The paper by H.R. Strauss presents numerical simulations, which pretend to describe the disruption instability in ITER device. The simulations were performed with numerical code M3D, described in Ref.[7] of the paper.
Date: October 20, 2010
Creator: Zakharov, Leonid E.
Object Type: Report
System: The UNT Digital Library
Comment on "Wall Forces Produced During ITER Disruptions" by H. R. Strauss, R. Paccagnella, and J. Breslau (PHYSICS OF PLASMAS 17, 082505 (2010) (open access)

Comment on "Wall Forces Produced During ITER Disruptions" by H. R. Strauss, R. Paccagnella, and J. Breslau (PHYSICS OF PLASMAS 17, 082505 (2010)

The paper by H.R. Strauss presents numerical simulations, which pretend to describe the disruption instability in ITER device. The simulations were performed with numerical code M3D, described in Ref.[7] of the paper.
Date: October 20, 2010
Creator: Zakharov, Leonid E.
Object Type: Report
System: The UNT Digital Library
Development of an Integrated Distribution Management System (open access)

Development of an Integrated Distribution Management System

This final report details the components, functionality, costs, schedule and benefits of developing an Integrated Distribution Management System (IDMS) for power distribution system operation. The Distribution Automation (DA) and Supervisory Control and Data Acquisition (SCADA) systems used by electric power companies to manage the distribution of electric power to retail energy consumers are vital components of the Nation’s critical infrastructure. Providing electricity is an essential public service and a disruption in that service, if not quickly restored, could threaten the public safety and the Nation’s economic security. Our Nation’s economic prosperity and quality of life have long depended on the essential services that utilities provide; therefore, it is necessary to ensure that electric utilities are able to conduct their operations safely and efficiently. A fully integrated technology of applications is needed to link various remote sensing, communications and control devices with other information tools that help guide Power Distribution Operations personnel. A fully implemented IDMS will provide this, a seamlessly integrated set of applications to raise electric system operating intelligence. IDMS will enhance DA and SCADA through integration of applications such as Geographic Information Systems, Outage Management Systems, Switching Management and Analysis, Operator Training Simulator, and other Advanced Applications, including …
Date: October 20, 2010
Creator: Schatz, Joe E.
Object Type: Report
System: The UNT Digital Library
DWPF DECON FRIT: SUMP AND SLURRY SOLIDS ANALYSIS (open access)

DWPF DECON FRIT: SUMP AND SLURRY SOLIDS ANALYSIS

The Savannah River National Laboratory (SRNL) has been requested to perform analyses on samples of the Defense Waste Processing Facility (DWPF) decon frit slurry (i.e., supernate samples and sump solid samples). Four 1-L liquid slurry samples were provided to SRNL by Savannah River Remediation (SRR) from the 'front-end' decon activities. Additionally, two 1-L sump solids samples were provided to SRNL for compositional and physical analysis. In this report, the physical and chemical characterization results of the slurry solids and sump solids are reported. Crawford et al. (2010) provide the results of the supernate analysis. The results of the sump solids are reported on a mass basis given the samples were essentially dry upon receipt. The results of the slurry solids were converted to a volume basis given approximately 2.4 grams of slurry solids were obtained from the {approx}4 liters of liquid slurry sample. Although there were slight differences in the analytical results between the sump solids and slurry solids the following general summary statements can be made. Slight differences in the results are also captured for specific analysis. (1) Physical characterization - (a) SEM/EDS analysis suggested that the samples were enriched in Li and Si (B and Na not detectable …
Date: October 20, 2010
Creator: Crawford, C.; Peeler, D. & Click, D.
Object Type: Report
System: The UNT Digital Library
THE EFFECT OF CO ON HYDROGEN PERMEATION THROUGH PD AND INTERNALLY OXIDIZED AND UN-OXIDIZED PD ALLOY MEMBRANES (open access)

THE EFFECT OF CO ON HYDROGEN PERMEATION THROUGH PD AND INTERNALLY OXIDIZED AND UN-OXIDIZED PD ALLOY MEMBRANES

The H permeation of internally oxidized Pd alloy membranes such as Pd-Al and Pd-Fe, but not Pd-Y alloys, is shown to be more resistant to inhibition by CO(g) as compared to Pd or un-oxidized Pd alloy membranes. The increased resistance to CO is found to be greater at 423 K than at 473 K or 523 K. In these experiments CO was pre-adsorbed onto the membranes and then CO-free H{sub 2} was introduced to initiate the H permeation.
Date: October 20, 2010
Creator: Shanahan, K.; Flanagan, T. & Wang, D.
Object Type: Article
System: The UNT Digital Library
False Patent Marking: Litigation and Legislation (open access)

False Patent Marking: Litigation and Legislation

This report will describe and analyze the Federal Circuit's 2009 decision that requires a per-article penalty for false marking, as well as two subsequent Federal Circuit decisions in 2010 that answer several questions that have arisen during the recent false patent marking litigation. It also identifies and discusses legislation in the 111th Congress that would amend § 292 in order to retroactively end qui tam false marking suits and with the intent of reducing the number of false marking suits filed in the future.
Date: October 20, 2010
Creator: Yeh, Brian T.
Object Type: Report
System: The UNT Digital Library
False Patent Marking: Litigation and Legislation (open access)

False Patent Marking: Litigation and Legislation

This report will describe and analyze the Federal Circuit's 2009 decision that requires a per-article penalty for false marking, as well as two subsequent Federal Circuit decisions in 2010 that answer several questions that have arisen during the recent false patent marking litigation.
Date: October 20, 2010
Creator: Yeh, Brian T.
Object Type: Report
System: The UNT Digital Library
Federal Register, Volume 75, Number 202, October 20, 2010, Pages 64615-64948 (open access)

Federal Register, Volume 75, Number 202, October 20, 2010, Pages 64615-64948

Daily publication of the U.S. Office of the Federal Register contains rules and regulations, proposed legislation and rule changes, and other notices, including "Presidential proclamations and Executive Orders, Federal agency documents having general applicability and legal effect, documents required to be published by act of Congress, and other Federal agency documents of public interest" (p. ii). Table of Contents starts on page iii.
Date: October 20, 2010
Creator: United States. Office of the Federal Register.
Object Type: Journal/Magazine/Newsletter
System: The UNT Digital Library
Genome-wide analysis of promoter architecture in Drosophila melanogaster (open access)

Genome-wide analysis of promoter architecture in Drosophila melanogaster

Core promoters are critical regions for gene regulation in higher eukaryotes. However, the boundaries of promoter regions, the relative rates of initiation at the transcription start sites (TSSs) distributed within them, and the functional significance of promoter architecture remain poorly understood. We produced a high-resolution map of promoters active in the Drosophila melanogaster embryo by integrating data from three independent and complementary methods: 21 million cap analysis of gene expression (CAGE) tags, 1.2 million RNA ligase mediated rapid amplification of cDNA ends (RLMRACE) reads, and 50,000 cap-trapped expressed sequence tags (ESTs). We defined 12,454 promoters of 8037 genes. Our analysis indicates that, due to non-promoter-associated RNA background signal, previous studies have likely overestimated the number of promoter-associated CAGE clusters by fivefold. We show that TSS distributions form a complex continuum of shapes, and that promoters active in the embryo and adult have highly similar shapes in 95% of cases. This suggests that these distributions are generally determined by static elements such as local DNA sequence and are not modulated by dynamic signals such as histone modifications. Transcription factor binding motifs are differentially enriched as a function of promoter shape, and peaked promoter shape is correlated with both temporal and spatial …
Date: October 20, 2010
Creator: Hoskins, Roger A.; Landolin, Jane M.; Brown, James B.; Sandler, Jeremy E.; Takahashi, Hazuki; Lassmann, Timo et al.
Object Type: Article
System: The UNT Digital Library
Intragovernmental Revolving Funds: NIST's Interagency Agreements and Workload Require Management Attention (open access)

Intragovernmental Revolving Funds: NIST's Interagency Agreements and Workload Require Management Attention

A letter report issued by the Government Accountability Office with an abstract that begins "GAO previously found that a significant portion of the National Institute of Standards and Technology's (NIST) working capital fund contained a growing carryover balance. Almost all of the fund's resources come from appropriations advanced from federal clients for NIST's technical services through interagency agreements. Monitoring and tracking key information about agreements and the funds advanced for them is critical for both NIST and its clients to make well-informed budget decisions, comply with applicable fiscal laws and internal controls, and ensure the proper use of federal funds. GAO was asked to review (1) the factors contributing to the working capital fund's carryover balance and (2) NIST's processes for managing its interagency agreements and workload. To do so, GAO reviewed laws and fiscal requirements, analyzed NIST budget data and policies related to its interagency agreements, analyzed a random sample of agreements, and interviewed NIST officials."
Date: October 20, 2010
Creator: United States. Government Accountability Office.
Object Type: Report
System: The UNT Digital Library
Low-mass fission detector for the fission neutron spectrum measurement (open access)

Low-mass fission detector for the fission neutron spectrum measurement

For the fission neutron spectrum measurement, the neutron energy is determined in a time-of-flight experiment by the time difference between the fission event and detection of the neutron. Therefore, the neutron energy resolution is directly determined by the time resolution of both neutron and fission detectors. For the fission detection, the detector needs not only a good timing response but also the tolerance of radiation damage and high {alpha}-decay rate. A parallel-plate avalanche counter (PPAC) has many advantages for the detection of heavy charged particles such as fission fragments. These include fast timing, resistance to radiation damage, and tolerance of high counting rate. A PPAC also can be tuned to be insensitive to particles, which is important for experiments with - emitting actinides. Therefore, a PPAC is an ideal detector for experiments requiring a fast and clean trigger for fission. In the following sections, the description will be given for the design and performance of a new low-mass PPAC for the fission-neutron spectrum measurements at LANL.
Date: October 20, 2010
Creator: Wu, C Y; Henderson, R; Gostic, J; Haight, R C & Lee, H Y
Object Type: Report
System: The UNT Digital Library
The Northwest Geysers EGS Demonstration Project Phase 1: Pre-stimulation coupled geomechanical modeling to guide stimulation and monitoring plans (open access)

The Northwest Geysers EGS Demonstration Project Phase 1: Pre-stimulation coupled geomechanical modeling to guide stimulation and monitoring plans

This paper presents activities and results associated with Phase 1 (pre-stimulation phase) of an Enhanced Geothermal System (EGS) demonstration project at the northwest part of The Geysers geothermal field, California. The paper presents development of a 3-D geological model, coupled thermal-hydraulic-mechanical (THM) modeling of proposed stimulation injection as well as current plans for stimulation and monitoring of the site. The project aims at creating an EGS by directly and systematically injecting cool water at relatively low pressure into a known High Temperature (about 280 to 350 C) Zone (HTZ) located under the conventional (240 C) steam reservoir at depths of {approx}3 km. Accurate micro-earthquake monitoring initiated before the start of the injection will be used as a tool for tracking the development of the EGS and monitoring changes in microseismicity. We first analyzed historic injection and micro-earthquake data from an injection well (Aidlin 11) located about 3 miles to the west of the new EGS demonstration area. Thereafter, we used the same modeling approach to predict the likely extent of the zone of enhanced permeability for a proposed initial injection in two wells (Prati State 31 and Prati 32) at the new EGS demonstration area. Our modeling indicates that the …
Date: October 20, 2010
Creator: Rutqvist, J.; Dobson, P. F.; Oldenburg, C. M.; Garcia, J. & Walters, M.
Object Type: Article
System: The UNT Digital Library
Renewable Energy Opportunities at Fort Drum, New York (open access)

Renewable Energy Opportunities at Fort Drum, New York

This document provides an overview of renewable resource potential at Fort Drum, based primarily upon analysis of secondary data sources supplemented with limited on-site evaluations. This effort focuses on grid-connected generation of electricity from renewable energy sources and also on ground source heat pumps for heating and cooling buildings. The effort was funded by the U.S. Army Installation Management Command (IMCOM) as follow-on to the 2005 Department of Defense (DoD) Renewables Assessment. The site visit to Fort Drum took place on May 4 and 5, 2010.
Date: October 20, 2010
Creator: Brown, Scott A.; Orrell, Alice C.; Solana, Amy E.; Williamson, Jennifer L.; Hand, James R.; Russo, Bryan J. et al.
Object Type: Report
System: The UNT Digital Library
REVIEW OF ACTINIDE AND STRONTIUM LOADING DATA FOR MST AND MMST (open access)

REVIEW OF ACTINIDE AND STRONTIUM LOADING DATA FOR MST AND MMST

SRNL reviewed the relevant data from MST and mMST fissile loading studies to determine if further studies were required. With respect to MST, SRNL found that the published results adequately bound the expected conditions that Small Column Ion Exchange (SCIX) process will operate under. The lack of strontium data does not represent an issue as strontium is not relevant to criticality. There is no threat to criticality safety from the lack of strontium loading data. However, SRNL proposes a single test with MST to ensure that future SCIX operations are conservatively bounded and strontium maximum loading is understood. With respect to attempts to maximally load mMST, SRNL's knowledge on actinide and strontium loading is limited to uranium behavior. mMST has a very weak affinity for uranium, and even extended contact time at high uranium concentration shows minimal loading onto mMST. This leaves questions about the ability to load plutonium, neptunium and strontium. SRNL proposes to perform two tests with mMST to ensure that questions on plutonium, neptunium, and strontium sorption are answered, as well as ensuring that future mMST operations are conservatively bounded.
Date: October 20, 2010
Creator: Peters, T.; Hobbs, D. & Fink, S.
Object Type: Report
System: The UNT Digital Library
Simulations of Alpha Wall Load in ITER. Final report (open access)

Simulations of Alpha Wall Load in ITER. Final report

The partially DOE funded International Thermonuclear Experimental Reactor (ITER) will produce massive amounts of energetic charged alpha particles, which are imperfectly confined by a strong magnetic field. The wall of the experiment is designed to withstand an estimated wall load from these fusion alpha particles, but the accuracy of this estimate needs to be improved to avoid potentially catastrophic surprises when the experiment becomes operational. We have added a more accurate, gyro-dynamic model of particle motion to the existing drift-dynamic model in the DELTA5D simulation software used for the project. We have also added the ability to load a detailed engineering model of the wall and use it in the simulations.
Date: October 20, 2010
Creator: Carlsson, Johan
Object Type: Report
System: The UNT Digital Library