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Femtosecond transient dichroism/birefringence studies of solute- solvent friction and solvent dynamics

Description: Ultrafast, heterodyne, polarization spectroscopies are used to measure solute-solvent frictional coupling and characterize the neat solvent`s relaxation dynamics on femtosecond and picosecond timescales.
Date: February 1, 1994
Creator: Chang, Y. J.; Castner, E. W. Jr.; Konitsky, W. & Waldeck, D. H.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Photoinduced dipoles and charge pairs in condensed phase. Progress report, November 14, 1993--November 15, 1994

Description: Efforts during the past year centered on expanding the understanding of the photocurrent transients produced by photoinduced dipoles in solution. In addition to exploring intramolecular charge transfer in a molecule which exhibits a giant dipole, the authors began an intensive look at intermolecular electron transfer between photoexcited electron donors and acceptors. The three projects which are farthest along are described in abstract form in the paragraphs which follow. The first makes use o… more
Date: December 31, 1994
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Demonstration testing and evaluation of in situ soil heating. Health and safety plan (Revision 2)

Description: This document is the Health and Safety Plan (HASP) for the demonstration of IITRI`s EM Treatment Technology. In this process, soil is heated in situ by means of electrical energy for the removal of hazardous organic contaminants. This process will be demonstrated on a small plot of contaminated soil located in the Pit Area of Classified Burial Ground K-1070-D, K-25 Site, Oak Ridge, TN. The purpose of the demonstration is to remove organic contaminants present in the soil by heating to a tempera… more
Date: December 28, 1994
Creator: Dev, H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Comparison of the activities of fine-particle size catalysts

Description: The objectives of Sandia`s fine-particle size catalyst testing project are to evaluate and compare the activities of the fine-particle size catalysts being developed in DOE/PETCs Advanced Research Coal Liquefaction Program by using standard coal liquefaction test procedures. The standard procedures use Blind Canyon coal, phenanthrene as the reaction solvent, and a factorial experimental design with temperatures from 350{degrees}C to 400{degrees}C, reaction times from 20 to 60 minutes, and catal… more
Date: December 31, 1994
Creator: Stohl, F. V.; Diegert, K. V. & Goodnow, D. C.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Ionization in Liquids [Annual] Progress Report, 1993--1994

Description: Progress in 1993--94 was focused on delineating how ions of the model nonpolar spherical solute Buckminsterfullerene interact differently with various nonpolar solvents than does the ellipsoidal fullerene analog C-70, and exposing a variety of new audiences to the electrophilicity-carcinogenicity relationship in order to obtain fresh insight into this relationship that may lead to elucidation of the role of electrons in carcinogenesis and thereby a better understanding of the biological effects… more
Date: December 31, 1994
Creator: Bakale, G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Cleaning up our act: Alternatives for hazardous solvents used in cleaning

Description: Lawrence Livermore National Laboratory (LLNL) has studied more than 70 alternative cleaners as potential replacements for chlorofluorocarbons (CFCs), halogenated hydrocarbons (e.g., trichloroethylene and trichloroethane), hydrocarbons (e.g., toluene and Stoddard Solvent), and volatile organic compounds (e.g., acetone, alcohols). This report summarizes LLNL`s findings after testing more than 45 proprietary formulations on bench-scale testing equipment and in more than 60 actual shops and laborat… more
Date: January 1, 1994
Creator: Shoemaker, J. D.; Meltzer, M.; Miscovich, D.; Montoya, D.; Goodrich, P. & Blycker, G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Integrated mixed waste storage program for spent solvent and laboratory waste

Description: A new tank project was initiated to provide a facility capable of providing the necessary storage capacity while meeting the South Carolina Hazardous Waste Management Regulations. The new project was initiated as a Category 11, General Plant Project. This project funding strategy would have allowed SRS access to project funding without Congressional approval as a Line Item, permitting the use of an expedited schedule for design and construction. The project team and Department of Energy -- Sava… more
Date: March 1, 1994
Creator: Walker, C. M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Toxicity of materials used in the manufacture of lithium batteries

Description: The growing interest in battery systems has led to major advances in high-energy and/or high-power-density lithium batteries. Potential applications for lithium batteries include radio transceivers, portable electronic instrumentation, emergency locator transmitters, night vision devices, human implantable devices, as well as uses in the aerospace and defense programs. With this new technology comes the use of new solvent and electrolyte systems in the research, development, and production of l… more
Date: May 1, 1994
Creator: Archuleta, M. M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Advanced heat pump for recovery of volatile organic compounds, Phase III - demonstration of BCSRHP mobile regenerator. Final report

Description: Under Phase I of the subject contract, feasibility studies and basic engineering studies were performed for a Brayton Cycle Solvent Recovery Heat Pump (BCSRBP) system to prevent pollution from small source emitters. It was determined that the cost of a complete system, including adsorbers and regeneration process, would be far too much for the small emission source in most cases. This {open_quotes}integrated{close_quotes} approach was therefore not feasible. However, it was concluded that the e… more
Date: November 1, 1994
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A general stochastic Liouville theory for sequential and superexchange electron-transfer reactions involving three Marcus potential surfaces

Description: A general theory for nonadiabatic electron-transfer reactions at high temperature involving Marcus parabolic potential surfaces is presented. The theory can be applied to a three-component system with a donor, a bridging intermediate and an acceptor as well as to a system with charge separation from a photo-excited state followed by charge recombination to a third or ground state. Using the nonperturbative stochastic Liouville approach, analytical expressions are derived for the superexchange a… more
Date: March 1, 1994
Creator: Tang, J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Macromolecular structure analysis and effective liquefaction pretreatment. Final report

Description: This project was concerned with characterizing the changes in coal macromolecular structure, that are of significance for liquefaction pretreatments of coal. The macromolecular structure of the insoluble portion of coal is difficult to characterize. Techniques that do so indirectly (based upon, for example, NMR and FTIR characterizations of atomic linkages) are not particularly sensitive for this purpose. Techniques that characterize the elastic structure (such as solvent swelling) are much mor… more
Date: July 1, 1994
Creator: Suuberg, E. M.; Yun, Y.; Lilly, W. D.; Leung, K.; Gates, T.; Otake, Y. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Highly dispersed catalysts for coal liquefaction. Quarterly report No. 9, August 23, 1993--November 22, 1993

Description: We analyzed two sets of liquefaction experiments, one involved the liquefaction of Black Thunder Coal with the corresponding recycle vehicle, and the second set of liquefaction runs involved the liquefaction of Argonne North Dakota Lignite. We compared coal conversions of Black Thunder coal and recycle solvent using Fe(CO){sub 5} and carbon monoxide/hydrogen atmospheres and a MolyVanL molybdenum catalyst under a hydrogen atmosphere. We also continued our investigation of the effect of water on … more
Date: February 15, 1994
Creator: Hirschon, A. S. & Wilson, R. B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Quaternary liquid/liquid equilibria of sodium sulfate, sodium sulfite and water with two solvents: Acetone and 2-propanol

Description: Aqueous solutions of sodium sulfate and sodium sulfite are produced from sodium carbonate in flue-gas scrubbers; recovery of these salts often requires multi-effect evaporators; however, a new energy-efficient unit operation called extractive crystallization has been shown to have reduced energy costs. In this process, an organic solvent is added to the aqueous salt solution to precipitate salt. Acetone is a suitable solvent for this process, better than 2-propanol. Liquid/liquid/solid equilibr… more
Date: March 1, 1994
Creator: Schiozer, A. L.
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries Government Documents Department
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Visible and near-IR spectroscopic studies of UC1{sub 4} in a basic ambient temperature melt: The observation of a possible geometric distorted UC1{sub 6}{sup 2{minus}} species and the evidence for the hydrogen-bond in the melt

Description: Since high temperatures can lead to broadening of absorption spectra, ambient temperature chloride melts were used; the system used was AlCl{sub 3}-1-ethyl-3-methyl-imidazolium chloride (EMIC). The uv-visible spectrum of UCl{sub 4} in basic melt had many peaks with the most intense (triplet) ones around 2000 nm, similar to these at high temperature and indicating the same species. The electronic transition is allowed by a static rather than a vibronic mechanism. The central peak in the UCl{sub … more
Date: September 1, 1994
Creator: Dai, S.; Toth, L. M.; Del Cul, G. D. & Metcalf, D. H.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Testing of a Peroxidation Systems, Inc. perox-pure SSB-30

Description: A facility is being designed and built at the US Department of Energy (DOE) Hanford Site to treat water containing a variety of organic and inorganic compounds. An ultraviolet light/hydrogen peroxide system, manufactured by Peroxidation Systems, Inc. (PSI), has been chosen to destroy the organic compounds in the feed stream. The PSI perox-pure{trademark} model SSB-30 has been tested by the Westinghouse Hanford Company (WHC) to provide data for permit documentation and to determine appropriate o… more
Date: February 1, 1994
Creator: Hodgson, K. M. & Lunsford, T. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The use of supercritical carbon dioxide for contaminant removal from solid waste

Description: Supercritical carbon dioxide is being explored as a waste minimization technique for separating oils, greases and solvents from solid waste. The containments are dissolved into the supercritical fluid and precipitated out upon depressurization. The carbon dioxide solvent can then be recycled for continued use. Definitions of the temperature, pressure, flowrate and potential co-solvents are required to establish the optimum conditions for hazardous contaminant removal. Excellent extractive capab… more
Date: June 1, 1994
Creator: Adkins, C. L. J.; Russick, E. M.; Smith, H. M. & Olson, R. B.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Electron-transfer reactions involving two harmonic potentials with a different force constant: The Zusman approach versus the spin-boson model

Description: Two approaches: (a generalized spin-boson model with a nonlinear spin-boson coupling and the Zusman`s stochastic Liouville formalism) are employed to analyze the electron-transfer reactions involving two harmonic potentials with a different force constant. An analytical rate formula, expressed as a convoluted integral of the individual rate kernel for each mode, is derived with full consideration of quantum tunneling effects. For a dominant solvent mode at low frequency, the formula can be redu… more
Date: June 1, 1994
Creator: Tang, J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Innovative technologies for in-situ remediation

Description: LLNL is developing several innovative remediation technologies as long-term improvements to the current pump and treat approaches to cleaning up contaminated soils and groundwater. These technologies include dynamic underground stripping, in-situ microbial filters, and remediation using bremsstrahlung radiation. Concentrated underground organic contaminant plumes are one of the most prevalent groundwater contamination sources. The solvent or fuel can percolate deep into the earth, often into wa… more
Date: June 1, 1994
Creator: Ragaini, R.; Aines, R.; Knapp, R.; Matthews, S. & Yow, J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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An assessment of alternatives for replacing Freon 113 in bench type electrical circuit board cleaning at Fermi National Accelerator Laboratory

Description: Fermilab is presently phasing out all solvents containing Freon-113 (CFC-113) as part of the continuing Waste Minimization Program. These solvents are used primarily in cleaning the flux off of electronic circuit boards after soldering, specifically in bench type work. Title VI of the Clean Air Act mandates a production phase-out for ozone depleting substances, like CFC-113, by the year 2000. Our study addresses this issue by evaluating and choosing alternative non-CFC solvents to replace the C… more
Date: July 1, 1994
Creator: Isakson, K. & Vessell, A. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Numerical simulation of groundwater flow on MPPs

Description: Mathematical models are often used to aid in the design and management of engineered remediation procedures. This paper discusses the numerical simulation of groundwater flow in three-dimensional heterogeneous porous media. A portable and scalable code called PARFLOW is being developed for massively parallel computers to enable the detailed modeling of large sites. This code uses a turning bands algorithm to generate a statistically accurate subsurface realization, and preconditioned conjugate … more
Date: March 1, 1994
Creator: Ashby, S.; Falgout, R.; Tompson, A. & Fogwell, T.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Effect of alpha-radiolysis on TRUEX-NPH solvent

Description: An unexpectedly high degradation of the TRUEX (TRansUranic EXtraction) solvent occurred during the treatment of waste solutions from the New Brunswick Laboratory. The waste solutions treated contained approximately 1 g/L of Pu-239 and 20 mg/L of Am-241. Earlier studies of {alpha}-radiolysis using carbon tetrachloride (CCl{sub 4}) rather than normal paraffinic hydrocarbons (NPH) as a diluent indicated greater resistance to radiation damage than observed. For this study, the TRUEX-NPH solvent was… more
Date: October 1, 1994
Creator: Buchholz, B. A.; Nunez, L. & Vandegrift, G. F.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Industrial Waste Reduction Program annual report, FY 1993

Description: The Department of Energy`s Industrial Waste Reduction Program (IWRP) sponsors the development, demonstration, and deployment of technologies that offer a significant opportunity to reduce waste generation, improve productivity, and enhance environmental performance in US industry. The program emphasizes technology-driven solutions that are economically beneficial and environmentally sound. Its goal is to improve the energy efficiency and competitiveness of private industry by cost-effectively r… more
Date: January 1994
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Spectroscopic database for multispectral UV laser remote sensing measurements

Description: The optimization of UV laser remote sensing systems and the interpretation of the return signals from these systems require detailed absorption and fluorescence spectra for the species of interest. Multispectral fluorescence techniques additionally require a database of dispersed UV fluorescence excitation spectra. Excitation wavelengths between 250 and 400 nm and fluorescence wavelengths in the 200 to 700 nm range are of interest.
Date: June 1, 1994
Creator: Tisone, G. C.; Hargis, P. J. Jr.; Clark, B. & Wakefield-Reyes, C.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Containment removal from solid waste by supercritical carbon dioxide

Description: Large quantities of solid wastes such as rags, kimwipes, swabs, coveralls, gloves, etc., contaminated with oils, greases and hazardous solvents are generated by industry and the government. If the hazardous components (offs, greases and solvents) could be segregated from the much larger bulk of non-hazardous material, then these solid materials could potentially be handled as sanitary waste, at a significant cost savings. AlliedSignal KCP, a typical DOE manufacturing site, spent several hundred… more
Date: May 1, 1994
Creator: Smith, H. M.; Olson, R. B.; Adkins, C. L. J. & Russick, E. M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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