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Nonlinear Projective-Iteration Methods for Solving Transport Problems on Regular and Unstructured Grids (open access)

Nonlinear Projective-Iteration Methods for Solving Transport Problems on Regular and Unstructured Grids

This is a project in the field of fundamental research on numerical methods for solving the particle transport equation. Numerous practical problems require to use unstructured meshes, for example, detailed nuclear reactor assembly-level calculations, large-scale reactor core calculations, radiative hydrodynamics problems, where the mesh is determined by hydrodynamic processes, and well-logging problems in which the media structure has very complicated geometry. Currently this is an area of very active research in numerical transport theory. main issues in developing numerical methods for solving the transport equation are the accuracy of the numerical solution and effectiveness of iteration procedure. The problem in case of unstructured grids is that it is very difficult to derive an iteration algorithm that will be unconditionally stable.
Date: April 30, 2007
Creator: Anistratov, Dmitriy Y.; Constantinescu, Adrian; Roberts, Loren & Wieselquist, William
Object Type: Report
System: The UNT Digital Library
Summary for Policymakers IPCC Fourth Assessment Report, Working Group III (open access)

Summary for Policymakers IPCC Fourth Assessment Report, Working Group III

A. Introduction 1. The Working Group III contribution to theIPCC Fourth Assessment Report (AR4) focuses on new literature on thescientific, technological, environmental, economic and social aspects ofmitigation of climate change, published since the IPCC Third AssessmentReport (TAR) and the Special Reports on COB2B Capture and Storage (SRCCS)and on Safeguarding the Ozone Layer and the Global Climate System (SROC).The following summary is organised into six sections after thisintroduction: - Greenhouse gas (GHG) emission trends, - Mitigation in theshort and medium term, across different economic sectors (until 2030), -Mitigation in the long-term (beyond 2030), - Policies, measures andinstruments to mitigate climate change, - Sustainable development andclimate change mitigation, - Gaps in knowledge. References to thecorresponding chapter sections are indicated at each paragraph in squarebrackets. An explanation of terms, acronyms and chemical symbols used inthis SPM can be found in the glossary to the main report.
Date: April 30, 2007
Creator: Barker, Terry; Bashmakov, Igor; Bernstein, Lenny; Bogner, Jean; Bosch, Peter; Dave, Rutu et al.
Object Type: Article
System: The UNT Digital Library
The Express-Star (Chickasha, Okla.), Ed. 1 Monday, April 30, 2007 (open access)

The Express-Star (Chickasha, Okla.), Ed. 1 Monday, April 30, 2007

Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date: April 30, 2007
Creator: Bush, Kent
Object Type: Newspaper
System: The Gateway to Oklahoma History
The Altus Times (Altus, Okla.), Vol. 108, No. 338, Ed. 1 Monday, April 30, 2007 (open access)

The Altus Times (Altus, Okla.), Vol. 108, No. 338, Ed. 1 Monday, April 30, 2007

Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date: April 30, 2007
Creator: Bush, Michael
Object Type: Newspaper
System: The Gateway to Oklahoma History
Hot Billet Surface Qualifier (open access)

Hot Billet Surface Qualifier

OG Technologies, Inc. (OGT), developed a prototype of a Hot Billet Surface Qualifier (“Qualifier”) based on OGT’s patented HotEye™ technology and other proprietary imaging and computing technologies. The Qualifier demonstrated its ability of imaging the cast billets in line with high definition pictures, pictures capable of supporting the detection of surface anomalies on the billets. The detection will add the ability to simplify the subsequent process and to correct the surface quality issues in a much more timely and efficient manner. This is challenging due to the continuous casting environment, in which corrosive water, temperature, vibration, humidity, EMI and other unbearable factors exist. Each installation has the potential of 249,000 MMBTU in energy savings per year. This represents a cost reduction, reduced emissions, reduced water usage and reduced mill scale.
Date: April 30, 2007
Creator: Chang, Tzyy-Shuh
Object Type: Report
System: The UNT Digital Library
Science & Technology Review June 2007 (open access)

Science & Technology Review June 2007

Lawrence Livermore National Laboratory is operated by the University of California for the Department of Energy's National Nuclear Security Administration. At Livermore, we focus science and technology on ensuring our nation's security. We also apply that expertise to solve other important national problems in energy, bioscience, and the environment. Science & Technology Review is published 10 times a year to communicate, to a broad audience, the Laboratory's scientific and technological accomplishments in fulfilling its primary missions. The publication's goal is to help readers understand these accomplishments and appreciate their value to the individual citizen, the nation, and the world.
Date: April 30, 2007
Creator: Chinn, D J
Object Type: Report
System: The UNT Digital Library
The Baytown Sun (Baytown, Tex.), Vol. 86, No. 154, Ed. 1 Monday, April 30, 2007 (open access)

The Baytown Sun (Baytown, Tex.), Vol. 86, No. 154, Ed. 1 Monday, April 30, 2007

Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date: April 30, 2007
Creator: Clements, Clifford E.
Object Type: Newspaper
System: The Portal to Texas History
Amplitude Analysis of the Decay D0 to K-K+pi0 (open access)

Amplitude Analysis of the Decay D0 to K-K+pi0

Using 385 fb{sup -1} of e{sup +}e{sup -} collisions, they study the amplitudes of the singly Cabibbo-suppressed decay D{sup 0} {yields} K{sup -}K{sup +}{pi}{sup 0}. They measure the strong phase difference between the {bar D}{sup 0} and D{sup 0} decays to K*(892){sup +}K{sup -} to be -35.5{sup o} {+-} 1.9{sup o}(stat) {+-} 2.2{sup o}(syst), and their amplitude ratio to be 0.599 {+-} 0.013(stat) {+-} 0.011(syst). They observe contributions from the K{pi} and K{sup -}K{sup +} scalar and vector amplitudes, and analyze their angular moments. They find no evidence for charged {kappa}, nor for higher spin states. They also perform a partial wave analysis of the K{sup -}K{sup +} system in a limited mass range.
Date: April 30, 2007
Creator: Collaboration, BABAR & Aubert, B.
Object Type: Article
System: The UNT Digital Library
FERMI & Elettra Accelerator Technical Optimization Final Report (open access)

FERMI & Elettra Accelerator Technical Optimization Final Report

This chapter describes the accelerator physics aspects, the engineering considerations and the choice of parameters that led to the accelerator design of the FERMI Free-Electron-Laser. The accelerator (also called the ''electron beam delivery system'') covers the region from the exit of the injector to the entrance of the first FEL undulator. The considerations that led to the proposed configuration were made on the basis of a study that explored various options and performance limits. This work follows previous studies of x-ray FEL facilities (SLAC LCLS [1], DESY XFEL [2], PAL XFEL [3], MIT [4], BESSY FEL [5], LBNL LUX [6], Daresbury 4GLS [7]) and integrates many of the ideas that were developed there. Several issues specific to harmonic cascade FELs, and that had not yet been comprehensively studied, were also encountered and tackled. A particularly difficult issue was the need to meet the requirement for high peak current and small slice energy spread, as the specification for the ratio of these two parameters (that defines the peak brightness of the electron beam) is almost a factor of two higher than that of the LCLS's SASE FEL. Another challenging aspect was the demand to produce an electron beam with as uniform …
Date: April 30, 2007
Creator: Cornacchia, M.; Craievich, P.; Di Mitri, S.; Pogorelov, I.; Qiang, J.; Venturini, M. et al.
Object Type: Report
System: The UNT Digital Library
Borehole seismic monitoring of seismic stimulation at OccidentalPermian Ltd's -- South Wason Clear Fork Unit (open access)

Borehole seismic monitoring of seismic stimulation at OccidentalPermian Ltd's -- South Wason Clear Fork Unit

Seismic stimulation is a proposed enhanced oil recovery(EOR) technique which uses seismic energy to increase oil production. Aspart of an integrated research effort (theory, lab and field studies),LBNL has been measuring the seismic amplitude of various stimulationsources in various oil fields (Majer, et al., 2006, Roberts,et al.,2001, Daley et al., 1999). The amplitude of the seismic waves generatedby a stimulation source is an important parameter for increased oilmobility in both theoretical models and laboratory core studies. Theseismic amplitude, typically in units of seismic strain, can be measuredin-situ by use of a borehole seismometer (geophone). Measuring thedistribution of amplitudes within a reservoir could allow improved designof stimulation source deployment. In March, 2007, we provided in-fieldmonitoring of two stimulation sources operating in Occidental (Oxy)Permian Ltd's South Wasson Clear Fork (SWCU) unit, located near DenverCity, Tx. The stimulation source is a downhole fluid pulsation devicedeveloped by Applied Seismic Research Corp. (ASR). Our monitoring used aborehole wall-locking 3-component geophone operating in two nearbywells.
Date: April 30, 2007
Creator: Daley, Tom & Majer, Ernie
Object Type: Report
System: The UNT Digital Library
The Ability of the United States Federal Radiological Monitoring and Assessment Center to Collect and Disseminate Environmental Measurements during Radiological Emergencies (open access)

The Ability of the United States Federal Radiological Monitoring and Assessment Center to Collect and Disseminate Environmental Measurements during Radiological Emergencies

The Federal Radiological Monitoring and Assessment Center (FRMAC) is the United States’ response organization for radiological emergencies. The FRMAC is structured as an operations center and employs the combined resources of several federal agencies to respond to any disaster resulting in the release of radioactivity. The mission of the FRMAC is to support state and local authorities in the gathering of environmental data using an array of survey equipment ranging from alpha probes, beta/gamma probes, and high-purity germanium (HPGe) spectroscopy to the gathering of physical samples. Once collected, the data are projected on maps to assist public officials make protective action decisions. In addition to the accumulation of data, it is the legal obligation of the FRMAC to keep archival records of all data points and their actions. During an event, it is conceivable that hundreds to thousands of sample points will be recorded over a relatively short time. It is in the interest of the federal government and public that the information collected be put to the best use as fast as possible. Toward this end, the Remote Sensing Laboratory, working under the direction of the United States Department of Energy’s National Nuclear Security Administration, is investigating the use …
Date: April 30, 2007
Creator: Essex, Craig Marianno and James
Object Type: Article
System: The UNT Digital Library
Retrieving Temperature and Moisture Profiles from AERI Radiance Observations: AERIPROF Value-Added Product Technical Description Revision 1 (open access)

Retrieving Temperature and Moisture Profiles from AERI Radiance Observations: AERIPROF Value-Added Product Technical Description Revision 1

This document explains the procedure to retrieve temperature and moisture profiles from high-spectral resolution infrared radiance data measured by the U.S. Department Of Energy (DOE) Atmospheric Radiation (ARM) Program’s atmospheric emitted radiance interferometer (AERI) instrument. The technique has been named the AERIPROF thermodynamic retrieval algorithm. The software has been developed over the last decade at the University of Wisconsin-Madison and has matured into an ARM Value-Added Procedure. This document will describe the AERIPROF retrieval procedure, outline the algorithm routines, discuss the software heritage, and, finally, provide references with further documentation.
Date: April 30, 2007
Creator: Feltz, W. F.; Howell, H. B.; Knuteson, R. O.; Comstock, J. M.; Mahon, R.; Turner, D. D. et al.
Object Type: Report
System: The UNT Digital Library
Ultra-Deepwater and Unconventional Natural Gas and Other Petroleum Resources (open access)

Ultra-Deepwater and Unconventional Natural Gas and Other Petroleum Resources

None
Date: April 30, 2007
Creator: Fray, Russell E.
Object Type: Report
System: The UNT Digital Library
Potential Impacts of Leakage from Black Rock Reservoir on the Hanford Site Unconfined Aquifer: Initial Hypothetical Simulations of Flow and Contaminant Transport - Errata (open access)

Potential Impacts of Leakage from Black Rock Reservoir on the Hanford Site Unconfined Aquifer: Initial Hypothetical Simulations of Flow and Contaminant Transport - Errata

Errata for report documenting initial scoping calculations investigating the potential impacts on the Hanford unconfined aquifer resulting from leakage from the proposed Black Rock Reservoir to the west. These calculations were performed for the U.S. Bureau of Reclamation.
Date: April 30, 2007
Creator: Freedman, Vicky L.
Object Type: Report
System: The UNT Digital Library
DoD Climate Change Fuel Cell Program (open access)

DoD Climate Change Fuel Cell Program

A grant was awarded to PPL EnergyPlus, LLC for two (2) 250kW Molten Carbonate Fuel Cells at Pepperidge Farm, Inc. on 9/30/03. Pepperidge Farm subsequently signed a contract for one 250kW fuel cell. A request was made and granted to apply the award for the second fuel cell to the Sheraton New York Hotel & Towers (see attached email). This report discusses the first year of operation of a fuel cell power plant located at Pepperidge Farm, Inc., Bloomfield, Connecticut and a fuel cell power plant located at Sheraton New York Hotel & Towers, New York, New York. PPL EnergyPlus, LLC installed the plants under a contract with Pepperidge Farm and Starwood Hotels & Resorts Worldwide, Inc. Two DFC 300 fuel cells, manufactured by FuelCell Energy, Inc. of Danbury, CT were selected for the project. The fuel cell located at Pepperidge Farm successfully operated from January 16, 2006 to January 15, 2007. The fuel cell located at Sheraton New York Hotel & Tower successfully operated from May 19, 2005 to May 18, 2006.This report discusses the performance of these plants during these periods.
Date: April 30, 2007
Creator: Gabrielle, Steven A.
Object Type: Report
System: The UNT Digital Library
Characterization and Actual Waste Tests With Tank 5f Samples (open access)

Characterization and Actual Waste Tests With Tank 5f Samples

None
Date: April 30, 2007
Creator: Hay, M; Kim Crapse, K; Samuel Fink, S & John Pareizs, J
Object Type: Report
System: The UNT Digital Library
INVESTIGATING HYDROGEN GENERATION AND CORROSION IN THE TREATMENT TANK AND THE POTENTIAL FORMATION OF A FLOATING LAYER IN NEUTRALIZATION TANK DURING WASTE TANK HEEL CHEMICAL CLEANING (open access)

INVESTIGATING HYDROGEN GENERATION AND CORROSION IN THE TREATMENT TANK AND THE POTENTIAL FORMATION OF A FLOATING LAYER IN NEUTRALIZATION TANK DURING WASTE TANK HEEL CHEMICAL CLEANING

None
Date: April 30, 2007
Creator: Herman, D; Bruce Wiersma, B; Fernando Fondeur, F; James Wittkop, J; John Pareizs, J; Kim Crapse, K et al.
Object Type: Report
System: The UNT Digital Library
The industrial Center at Mississippi State University (open access)

The industrial Center at Mississippi State University

The Mississippi State University Industrial Assessment Center (IAC) is one of 26 centers supported by the U.S. Department of Energy (DOE) at universities across the country. The Mississippi State University IAC in existence since 1994 provides plant assessments at no cost to eligible small and mid-sized manufacturers categorized in Standard Industrial Classification (SIC) Codes 20-39. Client eligibility is based on gross sales below $100 million, fewer than 500 employees at the plant, annual utility bills more than $100,000 and less than $2 million, and no in-house professional staff to perform an assessment. IAC assessment benefits include no cost to the clients, increased profitability and competitiveness, confidentiality, non-regulatory, nonobligatory, and student involvement.
Date: April 30, 2007
Creator: Hodge, b.K. & Emplaincourt, Mary C.
Object Type: Report
System: The UNT Digital Library
DERIVATIONS FOR HOOP STRESSES DUE TO SHOCK WAVES IN A TUBE (open access)

DERIVATIONS FOR HOOP STRESSES DUE TO SHOCK WAVES IN A TUBE

Equations describing the hoop stresses in a pipe due to water hammer have been presented in the literature in a series of papers, and this paper discusses the complete derivation of the pertinent equation. The derivation considers the pipe wall response to a water hammer induced shock wave moving along the inner wall of the pipe. Factors such as fluid properties, pipe wall materials, pipe dimensions, and damping are considered. These factors are combined to present a single, albeit rather complicated, equation to describe the pipe wall vibrations and hoop stresses as a function of time. This equation is also compared to another theoretical prediction for hoop stresses, which is also derived herein. Specifically, the two theories predict different maximum stresses, and the differences between these predictions are graphically displayed.
Date: April 30, 2007
Creator: Leishear, R
Object Type: Article
System: The UNT Digital Library
EXCITATION OF STRUCTURAL RESONANCE DUE TO A BEARING FAILURE (open access)

EXCITATION OF STRUCTURAL RESONANCE DUE TO A BEARING FAILURE

Vibration due to a bearing failure in a pump created significant vibrations in a fifteen foot by fifteen foot by eight feet tall mounting platform due to excitation of resonant frequencies. In this particular application, an 18,000 pound pump was mounted to a structural steel platform. When bearing damage commenced, the platform vibrated with sufficient magnitude that conversations could not be heard within forty feet of the pump. Vibration analysis determined that the frequency of the bearing was coincident to one of the natural frequencies of the pump, which was, in turn, coincident to one of the natural frequencies of the mounting platform. This coincidence of frequencies defines resonance. Resonance creates excessive vibrations when the natural frequency of a structure is coincident to an excitation frequency. In this well documented case, the excitation frequency was related to ball bearing failures. The pump is a forty foot long vertical pump used to mix nuclear waste in 1,300,000 gallon tanks. A 300 horsepower drive motor is mounted to a structural steel platform on top of the tank. The pump hangs down into the tank from above to mix the waste and is inaccessible after installation. Initial awareness of the problem was due …
Date: April 30, 2007
Creator: Leishear, R & David Stefanko, D
Object Type: Article
System: The UNT Digital Library
RELATIONSHIP BETWEEN VIBRATIONS AND MECHANICAL SEAL LIFE IN CENTRIFUGAL PUMPS (open access)

RELATIONSHIP BETWEEN VIBRATIONS AND MECHANICAL SEAL LIFE IN CENTRIFUGAL PUMPS

A reduction of vibrations in mechanical seals increases the life of the seals in centrifugal pumps by minimizing fatigue damage. Mechanical seals consist of two smooth seal faces. one face is stationary with respect to the pump. The other rotates. Between the faces a fluid film evaporates as the fluid moves radially outward across the seal face. ideally, the film evaporates as it reaches the outer surface of the seal faces, thereby preventing leakage from the pump and effectively lubricating the two surfaces. Relative vibrations between the two surfaces affect the fluid film and lead to stresses on the seal faces, which lead to fatigue damage. As the fluid film breaks down impacts between the two seal faces create tensile stresses on the faces, which cycle at the speed of the motor rotation. These cyclic stresses provide the mechanism leading to fatigue crack growth. The magnitude of the stress is directly related to the rate of crack growth and time to failure of a seal. Related to the stress magnitude, vibration data is related to the life of mechanical seals in pumps.
Date: April 30, 2007
Creator: Leishear, R; Jerald Newton, J & David Stefanko, D
Object Type: Article
System: The UNT Digital Library
Fabrication procedure for LiMn2O4/Graphite-based Lithium-ionRechargeable Pouch Cells (open access)

Fabrication procedure for LiMn2O4/Graphite-based Lithium-ionRechargeable Pouch Cells

Procedures were developed at LBNL specifically for making electrodes and batteries of LiMn{sub 2}O{sub 4} (spinel) and MCMB (meso carbon micro beads) graphite for high-power applications (HEVs). Electrode performance can be very dependent on the materials used so it is pointed out that Toda M809 was used for the cathode active material and MCMB 10-28 from Osaka Gas was used for the anode active material. The conductive additives were Dankon black, an acetylene black, and SFG-6, a micron-size graphite. The binder used was PVdF (Kureha 1100). More details of these procedures can be found in the lab notebook of Gao Liu. These procedures are documented here but are continuously being refined, and should therefore be considered a work in progress.
Date: April 30, 2007
Creator: Liu, Gao; Zheng, Honghe & Battaglia, Vincent S.
Object Type: Report
System: The UNT Digital Library
PRELIMINARY NUCLEAR CRITICALITY NUCLEAR SAFETY EVLAUATION FOR THE CONTAINER SURVEILLANCE AND STORAGE CAPABILITY PROJECT (open access)

PRELIMINARY NUCLEAR CRITICALITY NUCLEAR SAFETY EVLAUATION FOR THE CONTAINER SURVEILLANCE AND STORAGE CAPABILITY PROJECT

Washington Safety Management Solutions (WSMS) provides criticality safety services to Washington Savannah River Company (WSRC) at the Savannah River Site. One activity at SRS is the Container Surveillance and Storage Capability (CSSC) Project, which will perform surveillances on 3013 containers (hereafter referred to as 3013s) to verify that they meet the Department of Energy (DOE) Standard (STD) 3013 for plutonium storage. The project will handle quantities of material that are greater than ANS/ANSI-8.1 single parameter mass limits, and thus required a Nuclear Criticality Safety Evaluation (NCSE). The WSMS methodology for conducting an NCSE is outlined in the WSMS methods manual. The WSMS methods manual currently follows the requirements of DOE-O-420.1B, DOE-STD-3007-2007, and the Washington Savannah River Company (WSRC) SCD-3 manual. DOE-STD-3007-2007 describes how a NCSE should be performed, while DOE-O-420.1B outlines the requirements for a Criticality Safety Program (CSP). The WSRC SCD-3 manual implements DOE requirements and ANS standards. NCSEs do not address the Nuclear Criticality Safety (NCS) of non-reactor nuclear facilities that may be affected by overt or covert activities of sabotage, espionage, terrorism or other security malevolence. Events which are beyond the Design Basis Accidents (DBAs) are outside the scope of a double contingency analysis.
Date: April 30, 2007
Creator: Low, M; Matthew02 Miller, M & Thomas Reilly, T
Object Type: Article
System: The UNT Digital Library
Exercises Abroad: How Differing National Experiences are Reflected in Emergency Response Planning and Exercises (open access)

Exercises Abroad: How Differing National Experiences are Reflected in Emergency Response Planning and Exercises

Recently a member of the U.S. Department of Energy’s (DOE) Consequence Management Response Team took part in outreaches and an exercise in different foreign countries. In Brazil and South Korea, the outreaches revolved around a nuclear power plant exercise. In Canada, participation was limited to a table top Consequence Management exercise. This talk will briefly discuss each event and resulting pertinent observations. In each case, it became evident that governments respond to disasters very differently, and that these differences are not only culturally based, but also influenced by each government’s respective experience in dealing with natural disasters.
Date: April 30, 2007
Creator: Marianno, Craig
Object Type: Article
System: The UNT Digital Library