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Coal Conversion Wastewater Treatment by Catalytic Oxidation in Supercritical Water (open access)

Coal Conversion Wastewater Treatment by Catalytic Oxidation in Supercritical Water

In previous reports, we showed that CARULITE 150 from Carus Chemical Company was so effective with oxidation of phenol in supercritical water (SCW) that the results we obtained were likely influenced by internal mass-transfer resistance. We also reported that oxidation of phenol over MnO{sub 2} powder in SCW improved the conversions of both phenol and total organic carbon (TOC) relative to non-catalytic oxidation while the catalytic oxidation kinetics was free from mass-transfer limitation. In this report we continued the investigation of oxidation over the MnO{sub 2} powder in SCW.
Date: August 25, 1997
Creator: Savage, P.E.
Object Type: Report
System: The UNT Digital Library
The Colony Courier (The Colony, Tex.), Vol. 1, No. 7, Ed. 1 Thursday, December 25, 1997 (open access)

The Colony Courier (The Colony, Tex.), Vol. 1, No. 7, Ed. 1 Thursday, December 25, 1997

Weekly newspaper from The Colony, Texas that includes local, state, and national news along with advertising.
Date: December 25, 1997
Creator: Sorter, Dave
Object Type: Newspaper
System: The Portal to Texas History
The Comanche Chief (Comanche, Tex.), Vol. 123, No. 20, Ed. 1 Thursday, September 25, 1997 (open access)

The Comanche Chief (Comanche, Tex.), Vol. 123, No. 20, Ed. 1 Thursday, September 25, 1997

Weekly newspaper from Comanche, Texas that includes local, state, and national news along with advertising.
Date: September 25, 1997
Creator: Wilkerson, James C., III
Object Type: Newspaper
System: The Portal to Texas History
Commuter rail service growing (open access)

Commuter rail service growing

News release concerning the Trinity Railway Express's new service schedule with more frequent trips and a DART public hearing on the elimination of bus route 203.
Date: November 25, 1997
Creator: Lyons, Morgan & Stringfellow, Robin
Object Type: Text
System: The Portal to Texas History
Comparison of impurities and time-dependent behavior for the ITER divertor (open access)

Comparison of impurities and time-dependent behavior for the ITER divertor

This a the second part-of an ongoing project to model the divertor plasma for ITER. The UEDGE 2-D edge transport code is used to study the effect of impurities and tilted divertor plates to make a radiative divertor that can prevent excessive heat loads and adequately pump helium produced by fusion reactions in the core. The impurities are modeled using individual charge states with the local concentrations being determined by transport or as a fixed fraction of the hydrogenic ion density. For the multi-species model, helium, beryllium, carbon, and neon impurities are considered separately, together with the majority hydrogenic species, and a comparison is made of impurity spatial distribution and the power radiated at low impurity levels. At moderate to high impurity levels, typically only time-dependent solutions are found which are studied here for neon using both impurity models.
Date: February 25, 1997
Creator: Rensink, M. E.; Rognlien, T. D. & Hua, D. D.
Object Type: Report
System: The UNT Digital Library
A Computational Study of the Reactions of Atomic Hydrogen with Fluoromethanes: Kinetics and Product Channels (open access)

A Computational Study of the Reactions of Atomic Hydrogen with Fluoromethanes: Kinetics and Product Channels

This article discusses a computational study of the reactions of atomic hydrogen with fluoromethanes and kinetics and product channels.
Date: April 25, 1997
Creator: Berry, Rajiv; Ehlers, C. J.; Burgess, Donald R.; Zachariah, Michael Russel, 1957- & Marshall, Paul
Object Type: Article
System: The UNT Digital Library

[Cumulative AIDS cases through 7-25-97]

A dataset from Dallas County Health and Human Services about individuals living with AIDS as of July 25, 1997.
Date: July 25, 1997
Creator: Dallas County Health and Human Services
Object Type: Dataset
System: The UNT Digital Library
The Daily Chickasha Star (Chickasha, Okla.), Vol. 96, No. 125, Ed. 1 Saturday, October 25, 1997 (open access)

The Daily Chickasha Star (Chickasha, Okla.), Vol. 96, No. 125, Ed. 1 Saturday, October 25, 1997

Newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date: October 25, 1997
Creator: Settle, David
Object Type: Newspaper
System: The Gateway to Oklahoma History
The Daily Chickasha Star (Chickasha, Okla.), Vol. 96, No. 145, Ed. 1 Tuesday, November 25, 1997 (open access)

The Daily Chickasha Star (Chickasha, Okla.), Vol. 96, No. 145, Ed. 1 Tuesday, November 25, 1997

Newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date: November 25, 1997
Creator: Settle, David
Object Type: Newspaper
System: The Gateway to Oklahoma History
Dallas Voice (Dallas, Tex.), Vol. 13, No. 52, Ed. 1 Friday, April 25, 1997 (open access)

Dallas Voice (Dallas, Tex.), Vol. 13, No. 52, Ed. 1 Friday, April 25, 1997

Weekly newspaper from Dallas, Texas that includes local, state, and national news and advertising of interest to the Lesbian, Gay, Bisexual, and Transgender (LGBT) community.
Date: April 25, 1997
Creator: Vercher, Dennis
Object Type: Newspaper
System: The UNT Digital Library
Dallas Voice (Dallas, Tex.), Vol. 14, No. 13, Ed. 1 Friday, July 25, 1997 (open access)

Dallas Voice (Dallas, Tex.), Vol. 14, No. 13, Ed. 1 Friday, July 25, 1997

Weekly newspaper from Dallas, Texas that includes local, state, and national news and advertising of interest to the Lesbian, Gay, Bisexual, and Transgender (LGBT) community.
Date: July 25, 1997
Creator: Vercher, Dennis
Object Type: Newspaper
System: The UNT Digital Library
Definition and means of maintaining the criticality detectors and alarms portion of the PFP safety envelope (open access)

Definition and means of maintaining the criticality detectors and alarms portion of the PFP safety envelope

The Criticality Alarm System (CAS) provides continuous detection for high radiation (criticality) events and automatically initiates an evacuation signal to affected personnel. The Safety Envelope (SE) for PFP includes the necessary equipment and the required procedures to ensure the CAS is capable of performing its intended function. This document provides the definition and means of maintaining the SE for PFP related to the CAS. This document also identifies and provides a justification for those portions of the CAS excluded from the PFP Safety Envelope.
Date: August 25, 1997
Creator: White, W.F.
Object Type: Report
System: The UNT Digital Library
Destruction of 2,2`,3 - trichlorobiphenyl in aqueous solution by hydrous pyrolysis/oxidation (HPO) (open access)

Destruction of 2,2`,3 - trichlorobiphenyl in aqueous solution by hydrous pyrolysis/oxidation (HPO)

Aqueous, low-temperature oxidation rates for the polychlorinated biphenyl (PCB) congener 2,2`,3-trichlorobiphenyl have been measured in aqueous phosphate-buffered solutions using Dickson-type reaction vessels. Concentrations of the target compounds were determined by gas chromatography and compound identification was verified by gas chromatography - mass spectrometry. The reaction temperatures ranged from 131 {degrees}C to 165{degrees}C and the activation energy for the destruction of 2,2`,3-trichlorobiphenyl was estimated to be 134 kJ/mole. In a low concentration experiment (approximately 500 ng/g starting concentration), 2,2`,3-trichlorobiphenyl concentration reached non-detect in two days at 135{degrees}C. In a much higher concentration experiment (approximately 24,000 mg/g initial loading), nearly 40% of the initial 2,2`,3-trichlorobiphenyl concentration, or about 10,000 ng/g was destroyed at 161{degrees}C in 18 days. The 2,2`, 3-trichlorobiphenyl concentration of 24,000 ng/g measured at 131{degrees}C represents a greater than 100 fold increase in the aqueous solubility compared to the value of 200 ng/g at 20{degrees}C reported by Mackay et al. During the experiments the reacted portion of the 2,2`, 3-trichlorobiphenyl was completely mineralized, as indicated by a stoichiometric production of inorganic carbon and chloride ion, and no intermediates amenable to gas chromatography were observed during the HPO experiments. These preliminary experiments indicate that hydrous pyrolysis/oxidation (HPO) may be a useful …
Date: November 25, 1997
Creator: Leif, R. N.; Knauss, K. G.; Mew, D. A. & Aines, R. D.
Object Type: Report
System: The UNT Digital Library
Development of chemical vapor composite (CVC) ceramic materials. Status report, April 1995--June 1997 (open access)

Development of chemical vapor composite (CVC) ceramic materials. Status report, April 1995--June 1997

The objective of the 94 DOE Chemical Vapor Composites (CVC) ceramics materials grant is to develop a reliable and flexible process to produce, in a single step, ceramic composites to final shape. This report is a brief summary of activities in the development of the CVC ceramics materials. Equipment has been designed and built to fabricate CVC silicon carbides with fibers such as Nextel, Nicalon, and carbon. Materials and shapes have been fabricated and characterized as to physical and mechanical properties and microstructure. Details will be given in the final report.
Date: July 25, 1997
Creator: unknown
Object Type: Report
System: The UNT Digital Library
The Dublin Citizen (Dublin, Tex.), Vol. 8, No. 5, Ed. 1 Thursday, September 25, 1997 (open access)

The Dublin Citizen (Dublin, Tex.), Vol. 8, No. 5, Ed. 1 Thursday, September 25, 1997

Weekly newspaper from Dublin, Texas that includes local, state, and national news along with advertising.
Date: September 25, 1997
Creator: Wright, Karen
Object Type: Newspaper
System: The Portal to Texas History
Duval County Picture (San Diego, Tex.), Vol. 12, No. 26, Ed. 1 Wednesday, June 25, 1997 (open access)

Duval County Picture (San Diego, Tex.), Vol. 12, No. 26, Ed. 1 Wednesday, June 25, 1997

Weekly newspaper from San Diego, Texas that includes local, state, and national news along with advertising.
Date: June 25, 1997
Creator: Cardenas, Alfredo E.
Object Type: Newspaper
System: The Portal to Texas History
The Eastern Statesman (Wilburton, Okla.), Vol. 73, No. 4, Ed. 1 Thursday, September 25, 1997 (open access)

The Eastern Statesman (Wilburton, Okla.), Vol. 73, No. 4, Ed. 1 Thursday, September 25, 1997

Biweekly student newspaper from Eastern Oklahoma State College in Wilburton, Oklahoma that includes local, state, and campus news along with advertising.
Date: September 25, 1997
Creator: Garrett, Vicky
Object Type: Newspaper
System: The Gateway to Oklahoma History
The efficacy of oxidative coupling for promoting in-situ immobilization of hydroxylated aromatics in contaminated soil and sediment systems. Progress report, September 15, 1996--September 14, 1997 (open access)

The efficacy of oxidative coupling for promoting in-situ immobilization of hydroxylated aromatics in contaminated soil and sediment systems. Progress report, September 15, 1996--September 14, 1997

'The principal objective for Year 1 of this study has included sorbent collection, preparation and characterization, as well as investigation of the efficacy of abiotic/enzymatic coupling reactions on the irreversible binding of phenolic compounds on natural soils and sediments. In response to a budget reduction request specific modifications were made without compromising the integrity of the proposed work. The modified Phase 1 experimental matrix consists of four natural sorbents and three phenolic sorbates. Preliminary experiments with Chelsea soil indicated excessive release of soil organic matter (SOM) into solution, thereby complicating determination of aqueous phase phenol concentrations. It was therefore decided to substitute Lachine shale for the Chelsea soil. This shale is a well-characterized natural sorbent used previously in the laboratory. Additionally two field soils having similar soil morphology were identified based on their particle size distribution and organic matter content. These soils were located from US Department of Agriculture soil survey data and collected aseptically from a forested and a grassland site. Another deviation from the proposed schedule of tasks was the initiation of work from Phase 2 and Phase 3. In addition to experiments with natural systems, preliminary work with model and engineered systems was initiated earlier than scheduled …
Date: August 25, 1997
Creator: Weber, W.J. Jr. & Bhandari, A.
Object Type: Report
System: The UNT Digital Library
Electra Star-News (Electra, Tex.), Vol. 91, No. 6, Ed. 1 Thursday, September 25, 1997 (open access)

Electra Star-News (Electra, Tex.), Vol. 91, No. 6, Ed. 1 Thursday, September 25, 1997

Weekly newspaper from Electra, Texas that includes local, state, and national news along with advertising.
Date: September 25, 1997
Creator: unknown
Object Type: Newspaper
System: The Portal to Texas History
Electra Star-News (Electra, Tex.), Vol. 91, No. 19, Ed. 1 Thursday, December 25, 1997 (open access)

Electra Star-News (Electra, Tex.), Vol. 91, No. 19, Ed. 1 Thursday, December 25, 1997

Weekly newspaper from Electra, Texas that includes local, state, and national news along with advertising.
Date: December 25, 1997
Creator: unknown
Object Type: Newspaper
System: The Portal to Texas History
[Email from William Waybourn to John Thomas] (open access)

[Email from William Waybourn to John Thomas]

Email from William Waybourn to John Thomas with the subject line "Catching up."
Date: January 25, 1997
Creator: Waybourn, William
Object Type: Text
System: The UNT Digital Library
Engineering development of advanced physical fine coal cleaning for premium fuel applications (open access)

Engineering development of advanced physical fine coal cleaning for premium fuel applications

The goal of this project is engineering development of two advanced physical fine coal cleaning processes, column flotation and selective agglomeration, for premium fuel applications. Its scope includes laboratory research and bench-scale testing on six coals to optimize these processes, followed by design and construction of a 2 t/h process development unit (PDU). Large lots of clean coal are to be produced in the PDU from three project coals. Investigation of the near-term applicability of the two advanced fine coal cleaning processes in an existing coal preparation plant is another goal of the project and is the subject of this report.
Date: April 25, 1997
Creator: Smit, F. J.; Jha, M. C.; Phillips, D. I. & Yoon, R. H.
Object Type: Report
System: The UNT Digital Library

Ensemble: 1997-11-25 - Concert Choir

Choral concert performed at the UNT College of Music Concert Hall.
Date: November 25, 1997
Creator: University of North Texas. Concert Choir.
Object Type: Sound
System: The UNT Digital Library
Environmental guidance documents for exploration, development, Production, and transportation of crude oil and natural gas in texas: Quarterly technical report, January 1, 1997-March 31, 1997 (open access)

Environmental guidance documents for exploration, development, Production, and transportation of crude oil and natural gas in texas: Quarterly technical report, January 1, 1997-March 31, 1997

The following technical report provides a detailed status report of the DOE grant project entitled `Environmental Guidance Documents for Exploration, Development, Production, and Transportation of Crude Oil and Natural Gas in Texas.` The grant funding allocated is for the purpose of provided the Railroad Commission of Texas (Commission) with resources and capabilities to draft, publish and distribute documents that provide guidance to oil and gas operators on issues concerning oil and gas naturally occurring radioactive material (NORM) waste, oil and gas hazardous waste, remediation of crude oil spills, management of non-hazardous oil and gas wastes, and mechanical integrity testing of Class II injection and disposal wells.
Date: April 25, 1997
Creator: Savage, L.
Object Type: Report
System: The UNT Digital Library