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FINAL REPORT - Mechanisms of CCl4 Retention and Slow Release in Model Porous Solids and Sediments

Description: A magnetically coupled microbalance system has been used to measure adsorption and desorption isotherms and rates of desorption for carbon tetrachloride on dry prepared porous silica particles with narrow pore size distributions in the mesoporous range. Pore size distributions estimated from the carbon tetrachloride isotherms were found to be in close agreement with those determined using standard low temperature nitrogen adsorption. Three different types of particles were studied, with average… more
Date: December 11, 2006
Creator: Miller, Reid C. & Peyton, Brent M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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High Resolution Studies of the Origins of Polyatomic Ions in Inductively Coupled Plasma-Mass Spectrometry

Description: The inductively coupled plasma (ICP) is an atmospheric pressure ionization source. Traditionally, the plasma is sampled via a sampler cone. A supersonic jet develops behind the sampler, and this region is pumped down to a pressure of approximately one Torr. A skimmer cone is located inside this zone of silence to transmit ions into the mass spectrometer. The position of the sampler and skimmer cones relative to the initial radiation and normal analytical zones of the plasma is key to optimizing… more
Date: August 9, 2006
Creator: Ferguson, Jill Wisnewski
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries Government Documents Department
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Dynamic coupling of volcanic CO2 flow and wind at the HorseshoeLake tree kill, Mammoth Mountain, CA

Description: We investigate spatio-temporal relationships between soilCO2 flux (FCO2), meteorological variables, and topography over a ten-dayperiod (09/12/2006 to 09/21/2006) at the Horseshoe Lake tree kill,Mammoth Mountain, CA. Total CO2 discharge varied from 16 to 52 t d-1,suggesting a decline in CO2 emissions over decadal timescales. Weobserved systematic changes in FCO2 in space and time in association witha weather front with relatively high wind speeds from the west and lowatmospheric pressures. The … more
Date: November 20, 2006
Creator: Lewicki, J. L.; Hilley, G. E.; Tosha, T.; Aoyagi, R.; Yamamoto, K. & Benson, S. M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Reducing Ultra-Clean Transportation Fuel Costs with HyMelt Hydrogen

Description: This report describes activities for the sixteenth quarter of work performed under this agreement. MEFOS, the gasification testing subcontractor, reported to EnviRes that the vendor for the pressure vessel for above atmospheric testing now plans to deliver it by November 20, 2006 instead of October 20, 2006 as previously reported. MEFOS performed a hazardous operation review of pressurized testing. The current schedule anticipates above atmospheric pressure testing to begin during the week of A… more
Date: September 30, 2006
Creator: Malone, Donald P. & Renner, William R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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On-line coating of glass with tin oxide by atmospheric pressure chemical vapor deposition.

Description: Atmospheric pressure chemical vapor deposition (APCVD) of tin oxide is a very important manufacturing technique used in the production of low-emissivity glass. It is also the primary method used to provide wear-resistant coatings on glass containers. The complexity of these systems, which involve chemical reactions in both the gas phase and on the deposition surface, as well as complex fluid dynamics, makes process optimization and design of new coating reactors a very difficult task. In 2001 t… more
Date: November 1, 2006
Creator: Allendorf, Mark D.; Sopko, J.F. (PPF Industries, Pittsburgh, PA); Houf, William G.; Chae, Yong Kee; McDaniel, Anthony H.; Li, M. (PPF Industries, Pittsburgh, PA) et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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HYBRID HETEROGENEOUS CATALYSTS FOR HYDROGENATION OF CARBON DIOXIDE

Description: HYBRID HETEROGENEOUS CATALYSTS FOR HYDROGENATION OF CARBON DIOXIDE Lucia M. Petkovic, Harry W. Rollins, Daniel M. Ginosar, and Kyle C. Burch Idaho National Laboratory P.O. Box 1625 Idaho Falls, ID 83415-2208 Introduction Anthropogenic emissions of carbon dioxide, a gas often associated with global warming, have increased considerably since the beginning of the industrial age.1 In the U.S., stationary CO2 sources, such as electricity generation plants, produce about one-third of the anthropogeni… more
Date: September 1, 2006
Creator: Petkovic, Licia M.; Rollins, Harry W.; Ginosar, Daniel M. & Burch, Kyle C.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Final Report: Developing Liquid Protection Schemes for Fusion Energy Reactor First Walls

Description: Over the last year, the Georgia Tech group has experimentally studied vertical turbulent sheets of water issuing downwards into atmospheric pressure air at Reynolds numbers Re = U{sub 0}{delta}/{nu} = 53,000 and 120,000 and Weber numbers We = {rho}U{sub o} {sup 2}{delta}/{sigma} = 2,900 and 18,000, respectively. Here, U{sub o} is the average jet speed, {delta} is the jet thickness (short dimension) at the nozzle exit ({delta} = 1 cm), and {nu}, {rho} and {sigma} are the kinematic viscosity and … more
Date: March 29, 2006
Creator: Abdel-Khalik, Minami Yoda Said I.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Atmospheric Pressure Plasma Process And Applications

Description: This paper provides a general discussion of atmospheric-pressure plasma generation, processes, and applications. There are two distinct categories of atmospheric-pressure plasmas: thermal and nonthermal. Thermal atmospheric-pressure plasmas include those produced in high intensity arcs, plasma torches, or in high intensity, high frequency discharges. Although nonthermal plasmas are at room temperatures, they are extremely effective in producing activated species, e.g., free radicals and excited… more
Date: September 1, 2006
Creator: Kong, Peter C. & Myrtle
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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The Application of Global Kinetic Models to HMX Beta-Delta Transition and Cookoff Processes

Description: The reduction of the number of reactions in kinetic models for both the HMX beta-delta phase transition and thermal cookoff provides an attractive alternative to traditional multi-stage kinetic models due to reduced calibration effort requirements. In this study, we use the LLNL code ALE3D to provide calibrated kinetic parameters for a two-reaction bidirectional beta-delta HMX phase transition model based on Sandia Instrumented Thermal Ignition (SITI) and Scaled Thermal Explosion (STEX) tempera… more
Date: December 7, 2006
Creator: Wemhoff, A. P.; Burnham, A. K. & Nichols, A. L., III
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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