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80" Bubble Chamber Expansion System Preliminary Operating Procedures

Description: These procedures are intended to be used for the initial operation of the expansion system and serve as a basis for a more complete and revised form to be written once operating experience has been gained. An attempt has been made to offer a logical and systematic presentation to facilitate operation and maintenance of the system by the operating personnel. Thus, the sequence of valve actuations has been presented in matrix and check list form to minimize errors; this also has the advantage of … more
Date: January 7, 1964
Creator: Goodzeit, C. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

2005 Tour de Sol: The Sustainable Energy and Transportation Festival and Competition

Description: This report gives a summary of the 2005Tour de Sol: The Sustainable Energy and Transportation Festival and Competition. It lists our objectives, what we did, and an analysis of how we met our objectives. An 80-page report with a list of verified print, radio and TV media coverage, and copies of selected news clips and web media coverage is available at the NESEA office for review.
Date: May 7, 2005
Creator: Hazard, Nancy
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Advanced Water-Gas Shift Membrane Reactor

Description: The overall objectives for this project were: (1) to identify a suitable PdCu tri-metallic alloy membrane with high stability and commercially relevant hydrogen permeation in the presence of trace amounts of carbon monoxide and sulfur; and (2) to identify and synthesize a water gas shift catalyst with a high operating life that is sulfur and chlorine tolerant at low concentrations of these impurities. This work successfully achieved the first project objective to identify a suitable PdCu tri-me… more
Date: January 7, 2009
Creator: Emerson, Sean; Vanderspurt, Thomas; Opalka, Susanne; Radhakrishnan, Rakesh & Willigan, Rhonda
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Alternative Energy Center, Final Scientific/Technical Report

Description: The Lansing Community College Alternative Energy Center was created with several purposes in mind. The first purpose was the development of educational curricula designed to meet the growing needs of advanced energy companies that would allow students to articulate to other educational institutions or enter this growing workforce. A second purpose was the professional development of faculty and teachers to prepare them to train tomorrow's workforce and scholars. Still another purpose was to des… more
Date: September 7, 2007
Creator: Dillman, Howard D. & Marshall, JaNice C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

ANALYTICAL METHOD FOR MEASURING TOTAL PROTIUM AND TOTAL DEUTERIUM IN A GAS MIXTURE CONTAINING H2, D2,AND HD VIA GAS CHAROMATOGRAPHY

Description: The most common analytical method of identifying and quantifying non-radioactive isotopic species of hydrogen is mass spectrometry. A low mass, high resolution mass spectrometer with adequate sensitivity and stability to identify and quantify hydrogen isotopes in the low ppm range is an expensive, complex instrument. A new analytical technique has been developed that measures both total protium (H) and total deuterium (D) in a gas mixture containing H{sub 2}, D{sub 2}, and HD using an inexpensi… more
Date: August 7, 2007
Creator: Sessions, H
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Assessment of a chemical getter for scavenging tritium from an inert gas

Description: Results are presented of a study aimed at determining the feasibility of using chemical getter beds to scavenge tritium from inert gases. Two types of getter bed, fixed and fluidized, were considered, using cerium as the getter material. Mathematical-modeling results and capital-cost estimates indicate that not only is the gettering approach technically feasible, it could lead to considerable cost savings over catalytic oxidation, the tritium-removal method traditionally used.
Date: May 7, 1976
Creator: Maienschein, J. L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Batch Kd measurements of nuclides to estimate migration potential at the proposed Waste Isolation Pilot Plant in New Mexico

Description: Laboratory measurements to determine the sorption distribution coefficients, Kd, of radionuclides present in, and potentially leached from, radioactive wastes, in contact with representative geologic media, have been conducted. The nuclides studied include Cs, Sr, Tc, Ru, Sb, Ce, Eu, Pu, Np, Cm, Am, U, and Pa. The crushed rock materials used were from the vicinity of the Waste Isolation Pilot Plant, a project to isolate radioactive wastes in a bedded salt facility, near Carlsbad, New Mexico. So… more
Date: October 7, 1977
Creator: Serne, R.J.; Rai, D.; Mason, M.J. & Molecke, M.A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Bimetallic promotion of cooperative hydrogen transfer and heteroatom removal in coal liquefaction

Description: The ultimate objective of this research has been to uncover novel reagents and experimental conditions for heteroatom removal and hydrogen transfer processes, which would be applicable to the liquefaction of coal under low-severity conditions. To this end, one phase of this research has investigated the cleavage of carbon-heteroatom bonds involving sulfur, oxygen, nitrogen and halogen by subvalent transition-metal complexes. A second phase of the study has assessed the capability of the same tr… more
Date: April 7, 1992
Creator: Eisch, J.J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Bimetallic promotion of cooperative hydrogen transfer and heteroatom removal in coal liquefaction. Final technical report, September 1, 1988--December 31, 1991

Description: The ultimate objective of this research has been to uncover novel reagents and experimental conditions for heteroatom removal and hydrogen transfer processes, which would be applicable to the liquefaction of coal under low-severity conditions. To this end, one phase of this research has investigated the cleavage of carbon-heteroatom bonds involving sulfur, oxygen, nitrogen and halogen by subvalent transition-metal complexes. A second phase of the study has assessed the capability of the same tr… more
Date: April 7, 1992
Creator: Eisch, J. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Bonding in the Superionic Phase of Water

Description: The predicted superionic phase of water is investigated via ab initio molecular dynamics at densities of 2.0-3.0 g/cc (34-115 GPa) along the 2000K isotherm. They find that extremely rapid (superionic) diffusion of protons occurs in a fluid phase at pressures between 34 and 58 GPa. A transition to a stable body-centered cubic (bcc) O lattice with superionic proton conductivity is observed between 70 and 75 GPa, a much higher pressure than suggested in prior work. They find that all molecular spe… more
Date: February 7, 2005
Creator: Goldman, N; Fried, L E; Kuo, I W & Mundy, C J
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Carbide-Derived Carbons with Tunable Porosity Optimized for Hydrogen Storage

Description: On-board hydrogen storage is a key requirement for fuel cell-powered cars and trucks. Porous carbon-based materials can in principle adsorb more hydrogen per unit weight at room temperature than liquid hydrogen at -176 oC. Achieving this goal requires interconnected pores with very high internal surface area, and binding energies between hydrogen and carbon significantly enhanced relative to H2 on graphite. In this project a systematic study of carbide-derived carbons, a novel form of porous ca… more
Date: January 7, 2010
Creator: Fisher, John E.; Gogotsi, Yury & Yildirim, Taner
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Characterization of rocket propellant combustion products: Description of sampling and analysis methods for rocket exhaust characterization studies

Description: A systematic approach has been developed and experimentally validated for the sampling and chemical characterization of the rocket motor exhaust generated from the firing of scaled down test motors at the US Army's Signature Characterization Facility (ASCF) at Redstone Arsenal in Huntsville, Alabama. The overall strategy was to sample and analyze major exhaust constituents in near real time, while performing off-site analyses of samples collected for the determination of trace constituents of t… more
Date: June 7, 1990
Creator: Jenkins, R.A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Characterization of the solid product(s) formed when UF/sub 6/ is released into ambient air in a contained volume (U)

Description: Preliminary characterization of the plume or cloud produced by the release of UF/sub 6/ into humid air and the particulates comprising this cloud has been accomplished. The explosive release was conducted in a vessel in which the air at atmospheric pressure was static and the particulate material was collected on microscope grids by gravitational settling. Transmission and Scanning Electron Microscopy (TEM and SEM) have been used to determine the size or range of sizes of the particles produced… more
Date: May 7, 1980
Creator: Pickrell, P. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Chemical Kinetics of Hydrocarbon Ignition in Practical Combustion Systems

Description: Chemical kinetic factors of hydrocarbon oxidation are examined in a variety of ignition problems. Ignition is related to the presence of a dominant chain branching reaction mechanism that can drive a chemical system to completion in a very short period of time. Ignition in laboratory environments is studied for problems including shock tubes and rapid compression machines. Modeling of the laboratory systems are used to develop kinetic models that can be used to analyze ignition in practical sys… more
Date: July 7, 2000
Creator: Westbrook, C.K.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

A Combinatorial Approach to Determine Mechanisms of Atmospheric Copper Sulfidation

Description: Parallel microscopic experimentation (the combinatorial approach often used in solid-state science) was applied to characterize atmospheric copper corrosion behavior. Specifically, this technique permitted relative sulfidation rates to be determined for copper containing different levels of point defects and impurities (In, Al, O, and D). Corrosion studies are inherently difficult because of complex interactions between material interfaces and the environment. The combinatorial approach was dem… more
Date: October 7, 1999
Creator: Barbour, J. Charles; Braithwaite, Jeffrey W.; Copeland, Robert Guild; Dunn, Roberto G.; Minor, Kenneth G.; Missert, Nancy A. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Combined Theoretical and Experimental Investigation and Design of H2S Tolerant Anode for Solid Oxide Fuel Cells

Description: A solid oxide fuel cell (SOFC) is a high temperature fuel cell and it normally operates in the range of 850 to 1000 C. Coal syngas has been considered for use in SOFC systems to produce electric power, due to its high temperature and high hydrogen and carbon monoxide content. However, coal syngas also has contaminants like carbon dioxide (CO{sub 2}) and hydrogen sulfide (H{sub 2}S). Among these contaminants, H{sub 2}S is detrimental to electrode material in SOFC. Commonly used anode material in… more
Date: January 7, 2009
Creator: Botte, Gerardine G.; Daramola, Damilola & Muthuvel, Madhivanan
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Correlation of Kinetic Isotope Effects with Chemical Bonding in Three Center Reactions

Description: We consider the kinetic isotope effect in three center reactions of the type of A+BC→AB+C. Such model calculations are a good approximation to primary hydrogen isotope effects. For abstraction or transfer reactions, B becomes H, D, or T. The dynamics of the three storm system are calculated for a general quadratic potential, with the assumption that the potential energy is constant along the reaction coordinate (flat top barrier). This model system can be calculated in detail and serves to illu… more
Date: January 7, 1964
Creator: Bigeleisen, Jacob
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Corrosion of copper in Mound's single-pass potable water systems

Description: An increase in the number of copper plumbing failures at Mound prompted a thorough analysis of the failed components. Most of the components were elbow joints. All of these parts exhibited the same type of accelerated deterioration. The failed parts were analyzed optically and by scanning electron microscopy. Water chemistry, solder, and soldering fluxes were evaluated to determine their possible roles in the accelerated attack. Cross-sectioning of the elbow joints revealed residual soldering f… more
Date: December 7, 1990
Creator: Schleitweiler, Patrick M. & Miller, Pamela S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Cryogenic Adsorption of Hydrogen Isotopes Over Nano-Structured Materials

Description: Porous materials such as zeolites, activated carbon, silica gels, alumina and a number of industrial catalysts are compared and ranked for hydrogen and deuterium adsorption at liquid nitrogen temperature. All samples show higher D{sub 2} adsorption than that of H{sub 2}, in which a HY sample has the greatest isotopic effect while 13X has the highest hydrogen uptake capacity. Material's moisture content has significant impact to its hydrogen uptake. A material without adequate drying could resul… more
Date: October 7, 2010
Creator: Xiao, S. & Heung, L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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