305 Matching Results

Search Results

Results: 1 - 24 next
open access

Exotic physics: search for doubly-charged higgs bosons decaying to dileptons in p anti-p collisions at s**(1/2) = 1.96 tev

Description: The authors present the results of a search for doubly-charged Higgs bosons (H{sup {+-}}{sup {+-}}) decaying to dileptons (ll') using {approx} 240 pb{sup -1} of p{bar p} collision data collected by the CDF II experiment at the Fermilab Tevatron. In the search region, given by same-sign ll' mass m{sub ll'} > 80 GeV/c{sup 2} (100 GeV/c{sup 2} for ee channel), they observe no evidence for H{sup {+-}}{sup {+-}} production. They set limits on {sigma}(p{bar p} {yields} H{sup ++}H{sup --} {yields} … more
Date: November 15, 2004
Creator: Acosta, D.
Partner: UNT Libraries Government Documents Department
open access

Spent Fuel Transportation Package Response to the Baltimore Tunnel Fire Scenario

Description: On July 18, 2001, a freight train carrying hazardous (non-nuclear) materials derailed and caught fire while passing through the Howard Street railroad tunnel in downtown Baltimore, Maryland. The United States Nuclear Regulatory Commission (USNRC), one of the agencies responsible for ensuring the safe transportation of radioactive materials in the United States, undertook an investigation of the train derailment and fire to determine the possible regulatory implications of this particular event … more
Date: November 15, 2006
Creator: Adkins, Harold E.; Cuta, Judith M.; Koeppel, Brian J.; Guzman, Anthony D. & Bajwa, Christopher S.
Partner: UNT Libraries Government Documents Department
open access

Antiprotons and the Crystal Ball

Description: During the 1998 running of the Crystal Ball experiment, a couple of brief test runs were done with the C6 beamline tuned to produce antiprotons. Specifically, one shift on July 29th produced runs 329-334 with the beam momentum set for 650 MeV/c, run 355 was done on July 31st with a 550 MeV/c beam momentum, and run 926-929 were obtained in a single shift on November 3rd, also with a beam momentum of 550 MeV/c. The beam tune for the November data was greatly superior to that of the July data, how… more
Date: November 15, 1999
Creator: Allgower, C. & Peaslee, D.
Partner: UNT Libraries Government Documents Department
open access

Preliminary Screening Analysis for the Environmental Risk Evaluation System: Task 2.1.1: Evaluating Effects of Stressors – Fiscal Year 2010 Progress Report: Environmental Effects of Marine and Hydrokinetic Energy

Description: Possible environmental effects of marine and hydrokinetic (MHK) energy development are not well understood, and yet regulatory agencies are required to make decisions in spite of substantial uncertainty about environmental impacts and their long-term effects. An understanding of risk associated with likely interactions between MHK installations and aquatic receptors, including animals, habitats, and ecosystems, can help reduce the level of uncertainty and focus regulatory actions and scientific… more
Date: November 15, 2010
Creator: Anderson, Richard M.; Copping, Andrea E. & Van Cleve, Frances B.
Partner: UNT Libraries Government Documents Department
open access

Processing of High Level Waste: Spectroscopic Characterization of Redox Reactions in Supercritical Water - Final Report

Description: Current efforts are focused on the oxidative dissolution of chromium compounds found in Hanford tank waste sludge. Samples of chromium oxides and hydroxides with varying degrees of hydration are being characterized using Raman, FTIR, and XPS spectroscopic techniques. Kinetics of oxidation reactions at subcritical and supercritical temperatures are being followed by Raman spectroscopy using a high temperature stainless steel cell with diamond windows. In these reactions both hydrogen peroxide an… more
Date: November 15, 2000
Creator: Arrington, C. A., Jr.
Partner: UNT Libraries Government Documents Department
open access

The NAS Parallel Benchmarks

Description: The NAS Parallel Benchmarks (NPB) are a suite of parallel computer performance benchmarks. They were originally developed at the NASA Ames Research Center in 1991 to assess high-end parallel supercomputers. Although they are no longer used as widely as they once were for comparing high-end system performance, they continue to be studied and analyzed a great deal in the high-performance computing community. The acronym 'NAS' originally stood for the Numerical Aeronautical Simulation Program at N… more
Date: November 15, 2009
Creator: Bailey, David H.
Partner: UNT Libraries Government Documents Department
open access

Identification and Evaluation of Fluvial-Dominated Deltaic Reservoirs.

Description: This document is provided as a Quarterly Technical Progress Report for the program entitled `Identification and Evaluation of Fluvial- Dominated Deltaic (Class I Oil) Reservoirs in Oklahoma`, covering the reporting period of July 1 - September 30, 1997. Work is progressing as expected for the project. The Tonkawa Play workshop was completed as scheduled on July 9, 1997 in Norman Oklahoma. It was attended by 101 people of whom about 55 were operators. The Bartlesville workshop is scheduled for O… more
Date: November 15, 1997
Creator: Baken, Mary K. & Andrews, Richard
Partner: UNT Libraries Government Documents Department
open access

Facility Effluent Monitoring Plan for Pacific Northwest National Laboratory Balance-of-Plant Facilities

Description: The Pacific Northwest National Laboratory (PNNL) operates a number of Research & Development (R&D) facilities for the U.S. Department of Energy (DOE) on the Hanford Site. Facility effluent monitoring plans (FEMPs) have been developed to document the facility effluent monitoring portion of the Environmental Monitoring Plan (DOE 2000) for the Hanford Site. Three of PNNL’s R&D facilities, the 325, 331, and 3720 Buildings, are considered major emission points for radionuclide air sampling, and indi… more
Date: November 15, 2004
Creator: Ballinger, Marcel Y. & Gervais, Todd L.
Partner: UNT Libraries Government Documents Department
open access

Coupled Biogeochemical Processes Governing the Stability of Bacteriogenic Uraninite and Release of U(VI) in Heterogeneous Media: Molecular to Meter Scales

Description: In-situ reductive biotransformation of subsurface U(VI) to U(IV) (as ?UO2?) has been proposed as a bioremediation method to immobilize uranium at contaminated DOE sites. The chemical stability of bacteriogenic ?UO2? is the seminal issue governing its success as an in-situ waste form in the subsurface. The structure and properties of chemically synthesized UO2+x have been investigated in great detail. It has been found to exhibit complex structural disorder, with nonstoichiometry being common, h… more
Date: November 15, 2006
Creator: Bargar, John R.
Partner: UNT Libraries Government Documents Department
open access

Environmental Remediation Sciences Program at the Stanford Synchrotron Radiation Laboratory

Description: Synchrotron radiation (SR)-based techniques provide unique capabilities to address scientific issues underpinning environmental remediation science and have emerged as major research tools in this field. The high intensity of SR sources and x-ray photon-in/photon-out detection allow noninvasive in-situ analysis of dilute, hydrated, and chemically/structurally complex natural samples. SR x-rays can be focused to beams of micron and sub-micron dimension, which allows the study of microstructures,… more
Date: November 15, 2006
Creator: Bargar, John R.
Partner: UNT Libraries Government Documents Department
open access

2005 Annual Report Summer Research Institute Interfacial and Condensed Phase Chemical Physics

Description: The Pacific Northwest National Laboratory (PNNL) hosted its second annual Summer Research Institute in Interfacial and Condensed Phase Chemical Physics from May through September 2005. During this period, sixteen PNNL scientists hosted fourteen young scientists from eleven different universities. Of the fourteen participants, twelve were graduate students; one was a postdoctoral fellow; and one was a university faculty member.
Date: November 15, 2005
Creator: Barlow, Stephan E.
Partner: UNT Libraries Government Documents Department
open access

Treatment tests for ex situ removal of chromate, nitrate, and uranium (VI) from Hanford (100-HR-3) groundwater. Final report

Description: This report describes batch and anion exchange column laboratory-scale studies investigating ex situ methods to remove chromate (chromium [VI]), nitrate (NO{sub 3}), and uranium (present as uranyl (uranium [VI]) carbonato anionic species) from contaminated Hanford Site groundwaters. The technologies investigated include chemical precipitation or coprecipitation to remove chromate and uranium, and anion exchange to remove chromate, uranium, and nitrate. The technologies investigated were specifi… more
Date: November 15, 1993
Creator: Beck, M. A. & Duncan, J. B.
Partner: UNT Libraries Government Documents Department
open access

Systems study of fuels from grains and grasses. Quarterly progress report, July--October 1976

Description: The specific objectives of the project are to determine on a geographic basis the current and potential USA production capability for grain and grass crops, to perform a preliminary screening of conversion processes, and to perform preliminary technical and economic feasibility analyses. The results obtained to date on biomass production, conversion processes, and data management are reported. (JSR)
Date: November 15, 1976
Creator: Benson, W.; Allen, A.; Athey, R. & McElroy, A.
Partner: UNT Libraries Government Documents Department
open access

Casting Development for Uranium-Molybdenum Alloy Shapes

Description: The casting of shapes of uranium--molybdenum metal of varying sizes and thicknesses from a molten charge has been successfally accomplished with specificially designed graphite distributors and molds. Solid cylinders, hollow cylinders, and flat plate shapes were cast in gang molds. As many as 35 solid cylinders have been cast simultaneously. All castings had smooth surfaces, and solid shapes were cast to 0.006-in. tolerance on all dimensions except length. (auth)
Date: November 15, 1959
Creator: Binstock, M. H. & Stanley, J. A.
Partner: UNT Libraries Government Documents Department
open access

Monitor of distributed data systems (MODDS). Part 1. Digest of functional specifications

Description: Lawrence Livermore Laboratory (LLL) investigated a new approach for improving the use of geographically distributed computer services used by the U. S. Department of Transportation/Transportation Systems Center (DOT/TSC). The interactive use of these distributed services (a major portion of which are data bases) consumes increasing amounts of the DOT user-analyst's time. The new approach increases accountability, selection capability, usability, and control of distributed services usage. L… more
Date: November 15, 1976
Creator: Birss, E W; Donnelley, J E & Yeh, J W
Partner: UNT Libraries Government Documents Department
open access

PROCEEDINGS OF RIKEN BNL RESEARCH CENTER, VOLUME 37, RHIC SPIN COLLABORATION MEETING VI (PART 2).

Description: The second part of the sixth RHIC Spin Collaboration (RSC) meeting was held on November 15, 2001 at Brookhaven National Laboratory. Previous meetings have elaborated on the new generation of proton spin-structure studies (e.g. gluon polarization and flavor separation of q and {bar q} polarizations via real W{sup {+-}} production) enabled by studying polarized proton collisions at energies and momentum transfers where perturbative QCD models are expected to be applicable. The focus of this meeti… more
Date: November 15, 2001
Creator: Bland, L. & Saito, N.
Partner: UNT Libraries Government Documents Department
open access

SEREIS ELECTROLYTIC DISSOLVER FOR NUCLEAR FUELS. I. SCOPING STUDIES

Description: A dissolver design was demonstrated on a laboratory scale for the electrolytic dissolution of nuclear fuels. Simplified electrodes are used which need not touch the fuel pieces, thus avoiding the usual problems of achieving adequate electrical contact between the fuel and the anode basket. Because a series of electrolytic cells are formed along the length of the dissolver, current efficiency is enormously increased; this technique allows for the use of higher voltage and much lower current than… more
Date: November 15, 1961
Creator: Bomar, M. R.
Partner: UNT Libraries Government Documents Department
Back to Top of Screen