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The Advanced Petroleum-Based Fuels Program Evaluation of EC-Diesel and Diesel Particulate Filters in Southern California Vehicle Fleets
The EC-Diesel and particulate filter combination greatly reduced the particulate matter, hydrocarbon, and carbon monoxide emissions of all vehicles tested in the program to date. Particulate matter reductions greater than 98% were achieved. For several vehicles tested, the PM and HC emissions were less than background levels. Based on preliminary statistical analysis, there is 95%+ confidence that EC-D and particulate filters reduced emissions from three different types of vehicles. A fuel consumption penalty was not detectable using the current test procedures and chassis dynamometer laboratory. Test vehicles equipped with the CRT and DPX particulate filters and fueled with EC-Diesel fuel have operated reliably during the program start-up period.
Date:
April 10, 2000
Creator:
unknown
Object Type:
Article
System:
The UNT Digital Library
Alternative Fuels Program Natural Gas Engine Research and Development
None
Date:
April 10, 2000
Creator:
unknown
Object Type:
Presentation
System:
The UNT Digital Library
Altus Times (Altus, Okla.), Vol. 101, No. 23, Ed. 1 Monday, April 10, 2000
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
April 10, 2000
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Alvin Sun (Alvin, Tex.), Vol. 109, No. 30, Ed. 1 Monday, April 10, 2000
Weekly newspaper from Alvin, Texas that includes local, state, and national news along with advertising.
Date:
April 10, 2000
Creator:
Schwind, Jim & Holton, Kathleen
Object Type:
Newspaper
System:
The Portal to Texas History
Analysis of East Tank Farms Contamination Survey Frequency
This document provides the justification for the change in survey frequency in East Tank Farms occupied contamination areas from weekly to monthly. The Tank Farms Radiological Control Organization has performed radiological surveys of its Contamination Area (CA) Double Shell Tank (DST) farms in 200 East Area on a weekly basis for several years. The task package (DST-W012) controlling these routines designates specific components, at a minimum, that must be surveyed whenever the task is performed. This document documents the evaluation of these survey requirements and provides the recommendation and basis for moving DST tank farms in the 200 East Area from a weekly to monthly contamination survey. The contamination surveys for occupied contamination areas in West Tank Farms (WTF) were changed from a weekly frequency to a monthly frequency in 1997. Review of contamination survey data in WTF indicates a monthly interval remains satisfactory.
Date:
April 10, 2000
Creator:
ELDER, R.E.
Object Type:
Report
System:
The UNT Digital Library
Atmosphere recovery and regeneration in heat treating operations: NICE3 Project fact sheet
This report is a fact sheet written for the NICE3 Program on a new atmosphere gas recovery system for furnaces used in heat treating operations. The National Industrial Competitiveness through Energy, Environment, and Economics program (NICE3) promotes energy efficiency, clean production, and economic competitiveness in industry.
Date:
April 10, 2000
Creator:
National Renewable Energy Laboratory (U.S.)
Object Type:
Book
System:
The UNT Digital Library
The Baytown Sun (Baytown, Tex.), Vol. 78, No. 139, Ed. 1 Monday, April 10, 2000
Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date:
April 10, 2000
Creator:
Cash, Wanda Garner
Object Type:
Newspaper
System:
The Portal to Texas History
Beam-beam simulations for separated beams
We present beam-beam simulation results from a strong-strong gaussian code for separated beams for the LHC and RHIC. The frequency spectrum produced by the beam-beam collisions is readily obtained and offers a good opportunity for experimental comparisons. Although our results for the emittance blowup are preliminary, we conclude that, for nominal parameter values, there is no significant difference between separated beams and center-on-center collisions.
Date:
April 10, 2000
Creator:
Furman, Miguel A.
Object Type:
Article
System:
The UNT Digital Library
Brazing and spot welding innovations for joining aluminum alloys: Inventions and Innovation Aluminum Project Fact Sheet
Fact sheet written for the Inventions and Innovation Program about a new technology for brazing and spot welding.
Date:
April 10, 2000
Creator:
National Renewable Energy Laboratory (U.S.)
Object Type:
Book
System:
The UNT Digital Library
Clean production of coke from waste carbonaceous fines: Inventions and innovation steel project fact sheet
This report is a fact sheet written for the Inventions and Innovation Program about a new process for manufacturing metallurgical grade coke briquettes for the steel industry.
Date:
April 10, 2000
Creator:
National Renewable Energy Laboratory (U.S.)
Object Type:
Book
System:
The UNT Digital Library
Computing Farms
High energy physics, nuclear physics, space sciences, and many other fields have large challenges in computing. In recent years, PCs have achieved performance comparable to the high-end UNIX workstations, at a small fraction of the price. The authors review the development and broad applications of commodity PCs as the solution to CPU needs, and look forward to the important and exciting future of large scale PC computing.
Date:
April 10, 2000
Creator:
Yeh, G.P.
Object Type:
Article
System:
The UNT Digital Library
Cosmic microwave background: Past, future, and present
Anisotropies in the Cosmic Microwave Background (CMB) carry an enormous amount of information about the early universe. The anisotropy spectrum depends sensitively on close to a dozen cosmological parameters, some of which have never been measured before. Experiments over the next decade will help us extract these parameters, teaching us not only about the early universe, but also about physics at unprecedented energies. One of the dangers now is that scientist are tempted to ignore the present data and rely too much on the future. This would be a shame, for hundreds of individuals have put in a great amount of time building state-of-the-art instruments, making painstaking observations at remote places on and off the globe. It seems unfair to ignore all the data that has been taken to date simply because there will be more and better data in the future. The author then makes the following claims: (1) the theory of CMB anisotropies is understood; (2) using this understanding, he is able to extract from future observations extremely accurate measurements of about ten cosmological parameters; (3) taken at face value, present data determines one of these parameters, the curvature of the universe; and (4) the present data is …
Date:
April 10, 2000
Creator:
Dodelson, S.
Object Type:
Article
System:
The UNT Digital Library
Detecting antipersonnel mines with a handheld parabolic reflector transmitter/multistatic receiver impulse gpr
A novel handheld time-domain array GPR antipersonnel mine detection system using an offset paraboloidal reflector antenna is described. The reflector collimates rays from an ultra-wideband transmitting feed, directing the microwave impulse forward, in front of the antenna structure. As such, much of the ground reflected wave is directed further forward, away from the operator, the reflector, and the receiving antennas, and thereby reducing the major source of clutter. The wave transmitted into the ground that interacts with the target, generating significant backscatter returning toward the receiving antennas. These receiving antennas are configured in a 2 by 2 array to provide spatial focusing in both the along- and cross-track directions. This system has been built and tested at both Lawrence Livermore National Laboratory, and GeoCenters, Inc. In both cases, custom-built wideband antenna elements generate narrow pulse shapes, which allow for resolving small non-metallic targets buried at shallow depths. The LLNL's Micro-Power Impulse Radar (MIR) operates in the 1.5 to 5 GHz range a very narrow pulse shape. The Geo-Centers wideband TEMR antenna elements have higher power, though lower frequency range (850 to 1700 MHz), and generate less residual ringing in the time signal. Preliminary measured data from both systems indicate that …
Date:
April 10, 2000
Creator:
Rappaport, C.; Yang, B.; Azevedo, S.; Rosenbury, T.; Gough, J. & Dean, A.
Object Type:
Article
System:
The UNT Digital Library
Domain Green's Function Sampling in Diffusion Monte Carlo
We discuss the mathematical basis of sampling diffusive paths in Monte Carlo using Green's functions that are themselves built up stochastically from Green's functions in geometrical subdomains. The method of spheres is a special case. We show that other subdomains can be used as well, and may be more efficient for some applications. We include the basis for construction of such subdomain Green's functions for rectangular domains (in any number of dimensions) and cylindrical domains.
Date:
April 10, 2000
Creator:
Kalos, M.H.
Object Type:
Report
System:
The UNT Digital Library
Energy and environmental innovations for chemically-preserved wood wastes
This report is a fact sheet written for the Inventions and Innovation Program about a new method of disposing of chemically treated wood wastes.
Date:
April 10, 2000
Creator:
National Renewable Energy Laboratory (U.S.)
Object Type:
Book
System:
The UNT Digital Library
The Environmental Science and Health Effects Program
The goal of the Environmental Science and Health Effect Program is to conduct policy-relevant research that will help us understand atmospheric impacts and potential health effects that may be caused by the use of petroleum-based fuels and alternative transportation fuels from mobile sources.
Date:
April 10, 2000
Creator:
Gurevich, Michael; Lawson, Doug & Mauderly, Joe
Object Type:
Presentation
System:
The UNT Digital Library
Export Promotion: Federal Agencies' Activities and Resources in Fiscal Year 1999
A letter report issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO provided information on U.S. government programs intended to help businesses promote their products and services in overseas markets, focusing on: (1) the federal agencies involved in promoting exports of U.S. goods and services and the export promotion activities they perform; (2) these agencies' total resources devoted to export promotion in fiscal year (FY) 1999; and (3) the agencies' overseas resources devoted to export promotion during this period."
Date:
April 10, 2000
Creator:
United States. General Accounting Office.
Object Type:
Report
System:
The UNT Digital Library
The Express-Star (Chickasha, Okla.), Ed. 1 Monday, April 10, 2000
Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date:
April 10, 2000
Creator:
Bush, Kent
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
A fracture mechanics approach for estimating fatigue crack initiation in carbon and low-alloy steels in LWR coolant environments
A fracture mechanics approach for elastic-plastic materials has been used to evaluate the effects of light water reactor (LWR) coolant environments on the fatigue lives of carbon and low-alloy steels. The fatigue life of such steel, defined as the number of cycles required to form an engineering-size crack, i.e., 3-mm deep, is considered to be composed of the growth of (a) microstructurally small cracks and (b) mechanically small cracks. The growth of the latter was characterized in terms of {Delta}J and crack growth rate (da/dN) data in air and LWR environments; in water, the growth rates from long crack tests had to be decreased to match the rates from fatigue S-N data. The growth of microstructurally small cracks was expressed by a modified Hobson relationship in air and by a slip dissolution/oxidation model in water. The crack length for transition from a microstructurally small crack to a mechanically small crack was based on studies on small crack growth. The estimated fatigue S-N curves show good agreement with the experimental data for these steels in air and water environments. At low strain amplitudes, the predicted lives in water can be significantly lower than the experimental values.
Date:
April 10, 2000
Creator:
Park, H. B. & Chopra, O. K.
Object Type:
Article
System:
The UNT Digital Library
[Funeral Program for Albert Whiteside, Jr., April 10, 2000]
Funeral program for Albert Whiteside, Jr., born December 7, 1922 and died April 4, 2000. The funeral was held April 10, 2000 at Second Baptist Church, officiated by Rev. Robert Jemerson. Funeral arrangements were made through Lewis Funeral Home, and he was buried in Fort Sam Houston National Cemetery near San Antonio, Texas.
Date:
April 10, 2000
Creator:
unknown
Object Type:
Pamphlet
System:
The Portal to Texas History
[Funeral Program for Craig Everett Johnson, April 10, 2000]
Funeral program for Craig Everett Johnson, born August 10, 1966 and died April 4, 2000. The funeral was held April 10, 2000 at F. E. Lewis Memorial Chapel, officiated by Reverend J.S. Smith. Funeral arrangements were made through the Lewis Funeral Home and he was buried in Meadowlawn Memorial Park in San Antonio, Texas.
Date:
April 10, 2000
Creator:
unknown
Object Type:
Pamphlet
System:
The Portal to Texas History
Interim report task 3: immobilization process/equipment testing - task 3.4: non-destructive evaluation part 1 of 2 to Lawrence Livermore National Laboratory under contract b345772
This report contains a summary of the results generated for Task 3.4: Non-destructive Evaluation (a subtask of Task 3: Immobilization Process/Equipment Testing). The aim of this task was to carry out X-ray diffraction (XRD) on selected samples from previous Task 1: Form Development work. These XRD results were to be compared to the results obtained using quantitative scanning electron microscopy.
Date:
April 10, 2000
Creator:
Stewart, M W A; R, Vance E; Day, R A & Lumpkin, G R
Object Type:
Report
System:
The UNT Digital Library
Investigation of Mixed Metal Sorbent / Catalysts for the Simultaneous Removal of Sulfur and Nitrogen Oxides
Simultaneous removal of SO{sub 2} and NO{sub x} using a regenerable solid sorbent will constitute an important improvement over the use of separate processes for the removal of these two pollutants from stack gases and possibly eliminate several shortcomings of the individual SO{sub 2} and NO{sub x} removal operations. The work done at PETC and the DOE-funded investigation of the investigators on the sulfation and regeneration of alumina-supported cerium oxide sorbents have shown that they can perform well at relatively high temperatures (823-900 K) as regenerable desulfurization sorbents. Survey of the recent literature shows that addition of copper oxide to ceria lowers the sulfation temperature of ceria down to 773 K, sulfated ceria-based sorbents can function as selective SCR catalysts even at elevated temperatures, SO{sub 2} can be directly reduced to sulfur by CO on CuO-ceria catalysts, and ceria-based catalysts may have a potential for selective catalytic reduction of NO{sub x} by methane. These observations indicate a possibility of developing a ceria-based sorbent/catalyst which can remove both SO{sub 2} and NO{sub x} from flue gases within a relatively wide temperature window, produce significant amounts of elemental sulfur during regeneration, and use methane for the selective catalytic reduction of NO{sub x}. …
Date:
April 10, 2000
Creator:
Akyurtlu, Ates & Akyurtlu, Jale F.
Object Type:
Report
System:
The UNT Digital Library
IRS Modernization: Business Practice, Performance Management, and Information Technology Challenges
Testimony issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO discussed the Internal Revenue Service's (IRS) modernization efforts, focusing on the business practice, performance management, and information technology challenges IRS faces."
Date:
April 10, 2000
Creator:
United States. General Accounting Office.
Object Type:
Text
System:
The UNT Digital Library