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Ash & Pulverized Coal Deposition in Combustors & Gasifiers

Description: Further progress in achieving the objectives of the project was made in the period of January I to March 31, 1998. The direct numerical simulation of particle removal process in turbulent gas flows was completed. Variations of particle trajectories are studied. It is shown that the near wall vortices profoundly affect the particle removal process in turbulent boundary layer flows. Experimental data for transport and deposition of fibrous particles in the aerosol wind tunnel was obtained. The me… more
Date: December 2, 1998
Creator: Ahmadi, Goodarz
Item Type: Refine your search to only Report
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Ash & Pulverized Coal Deposition in Combustors & Gasifiers

Description: Further progress in achieving the objectives of the project was made in the period of July 1 to September 30, 1997. The direct numerical simulation of particle removal process in turbulent gas flows was continued. Variations of vorticity contours which are averaged over a short time duration are studied. It is shown that the near wall vortices profoundly affect the particle removal process in turbulent boundary layer flows. The sublayer model for evaluating the particle deposition in turbulent … more
Date: December 2, 1998
Creator: Ahmadi, Goodarz
Item Type: Refine your search to only Report
open access

Assembly of Oriented Virus Arrays by Chemo-Selective Ligation Methods and Nanolithography Techniques

Description: The present work describes our ongoing efforts towards the creation of nano-scaled ordered arrays of protein/virus covalently attached to site-specific chemical linkers patterned by different nanolithograpy techniques. We will present a new and efficient solid-phase approach for the synthesis of chemically modified long alkyl-thiols. These compounds can be used to introduce chemoselective reacting groups onto gold and silicon-based surfaces. Furthermore, these modified thiols have been used to … more
Date: December 2, 2002
Creator: Camarero, J. A.; Cheung, C. L.; Lin, T.; Johnson, J. E.; Weeks, B. L.; Noy, A. et al.
Item Type: Refine your search to only Article
open access

Assessment of Food Chain Pathway Parameters in Biosphere Models: Annual Progress Report for Fiscal Year 2004

Description: This Annual Progress Report describes the work performed and summarizes some of the key observations to date on the U.S. Nuclear Regulatory Commission’s project Assessment of Food Chain Pathway Parameters in Biosphere Models, which was established to assess and evaluate a number of key parameters used in the food-chain models used in performance assessments of radioactive waste disposal facilities. Section 2 of this report describes activities undertaken to collect samples of soils from three r… more
Date: December 2, 2004
Creator: Napier, Bruce A.; Krupka, Kenneth M.; Fellows, Robert J.; Cataldo, Dominic A.; Valenta, Michelle M. & Gilmore, Tyler J.
Item Type: Refine your search to only Report
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Authorization for change in operating standards, 221 and 224 Building, pertaining to process changes during the period March 1, 1951--December 1, 1952

Description: Since the issuance of HW-17398, Separations Section Operating Standards - Part I relating to the Bismuth Phosphate Process on March 1, 1951, several changes in the process have been found desirable and have been reduced to practice. This document presents these changes.
Date: December 2, 1952
Creator: Bailor, W. C.
Item Type: Refine your search to only Report
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Automated Boiler Combustion Controls for Emission Reduction and Efficiency Improvement

Description: In the late 1980s, then President Bush visited Krakow, Poland. The terrible air quality theremotivated him to initiate a USAID-funded program, managed by DOE, entitled �Krakow Clean Fossil Fuels and Energy Efficiency Program.� The primary objective of this program was to encourage the formation of commercial ventures between U.S. and Polish firms to provide equipment and/or services to reduce pollution from low-emission sources in Krakow, Poland. This program led to the award of a number of coo… more
Date: December 2, 1998
Item Type: Refine your search to only Report
open access

Automobile and Light Truck Fuel Economy: The CAFE Standards

Description: One of the least controversial provisions of the Energy Policy and Conservation Act of 1975 (P.L. 94-163) established corporate average fuel economy (CAFE) standards for new passenger cars. This report presents a brief background and analysis regarding the price of crude oil that brought into sharp focus the fuel inefficiency of U.S. automobiles. The report also discusses the previous issues and the most recent developments regarding CAFE.
Date: December 2, 2002
Creator: Bamberger, Robert L.
Item Type: Refine your search to only Report
open access

Aviation Security: DHS Has Taken Steps to Enhance International Aviation Security and Facilitate Compliance with International Standards, but Challenges Remain

Description: Testimony issued by the Government Accountability Office with an abstract that begins "The attempted December 25, 2009, terrorist attack and the October 2010 bomb attempt involving air cargo originating in Yemen highlight the ongoing threat to aviation and the need to coordinate security standards and practices to enhance security with foreign partners, a process known as harmonization. This testimony discusses the Department of Homeland Security's (DHS) progress and challenges in harmonizing i… more
Date: December 2, 2010
Creator: United States. Government Accountability Office.
Item Type: Refine your search to only Text
open access

Beam Physics in X-Ray Radiography Facilities

Description: Performance of x-ray radiography facilities requires focusing the electron beams to sub-millimeter spots on the x-ray converters. Ions extracted from a converter by impact of a high intensity beam can partially neutralize the beam space charge and change the final focusing system. We will discuss these ion effects and mitigation.
Date: December 2, 2002
Creator: Chen, Y. J.; Caporaso, G. J.; Chambers, F. W.; Falabella, S.; Goldin, F. J.; Guethlein, G. et al.
Item Type: Refine your search to only Article
open access

Beam Tools for Geant4 (User's Guide)

Description: Geant4 is a tool kit developed by a collaboration of physicists and computer professionals in the high energy physics field for simulation of the passage of particles through matter. The motivation for the development of the Beam Tools is to extend the Geant4 applications to accelerator physics. The Beam Tools are a set of C++ classes designed to facilitate the simulation of accelerator elements: r.f. cavities, magnets, absorbers, etc. These elements are constructed from Geant4 solid volumes li… more
Date: December 2, 2002
Creator: V.Daniel Elvira, Paul Lebrun and Panagiotis Spentzouris
Item Type: Refine your search to only Report
open access

BG/L Calculations of the QCD Critical Temperature and Equation of State

Description: We summarize the latest results from performing Lattice QCD calculations with two different discretization schemes, asqtad and p4fat3, on the LLNL BG/L supercomputer, and present a plan for continued running to complete the calculation of the QCD transition temperature and equation of state.
Date: December 2, 2007
Creator: Battacharya, T.; Bazavov, A.; Cheng, M.; Christ, N.; DeTar, C.; Gottlieb, S. et al.
Item Type: Refine your search to only Report
open access

Biofuel alternatives to ethanol: pumping the microbial well

Description: Engineered microorganisms are currently used for the production of food products, pharmaceuticals, ethanol fuel and more. Even so, the enormous potential of this technology has yet to be fully exploited. The need for sustainable sources of transportation fuels has gener-ated a tremendous interest in technologies that enable biofuel production. Decades of work have produced a considerable knowledge-base for the physiology and pathway engineering of microbes, making microbial engineering an ideal… more
Date: December 2, 2009
Creator: Fortman, J. L.; Chhabra, Swapnil; Mukhopadhyay, Aindrila; Chou, Howard; Lee, Taek Soon; Steen, Eric et al.
Item Type: Refine your search to only Article
open access

The BNL Super Neutrino Beam Project

Description: To determine the neutrino mixing amplitudes and phase accurately, as well as the CP violation parameters, a very long base line super neutrino beam facility is needed. This is possible due to the long distance and wideband nature of the neutrino beam for the observation of several oscillations from one species of the neutrino to the other [1,2]. BNL plans to upgrade the AGS proton beam from the current 0.14 MW to higher than 1.0 MW and beyond for such a neutrino facility which consists of three… more
Date: December 2, 2004
Creator: Weng, W. T. & Raparia, D.
Item Type: Refine your search to only Article
open access

Brownfield Redevelopment: Stakeholders Report That EPA's Program Helps to Redevelop Sites, but Additional Measures Could Complement Agency Efforts

Description: A letter report issued by the Government Accountability Office with an abstract that begins "Brownfields are properties whose use may be hindered by the threat of contamination. Cleaning up and redeveloping these properties can protect human health and the environment and provide economic benefits. Under the Brownfields Act, the Environmental Protection Agency (EPA) provides grants to state and local governments and others for site assessments, job training, revolving loans, and cleanups and to… more
Date: December 2, 2004
Creator: United States. Government Accountability Office.
Item Type: Refine your search to only Report
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