Design and implementation of a CO{sub 2} flood utilizing advanced reservoir characterization and horizontal injection wells in a shallow shelf carbonate approaching waterflood depletion. [Quarterly report], October 1, 1995--December 31, 1995 (open access)

Design and implementation of a CO{sub 2} flood utilizing advanced reservoir characterization and horizontal injection wells in a shallow shelf carbonate approaching waterflood depletion. [Quarterly report], October 1, 1995--December 31, 1995

The first objective is to utilize reservoir characterization and advanced technologies to optimize the design of a CO{sub 2} project for the South Cowden Unit (SCU) located in Ector County, Texas. The SCU is a mature, relatively small, shallow shelf carbonate unit nearing waterflood depletion. The second objective is to demonstrate the performance and economic viability of the project in the field. This report includes work on the reservoir characterization and project design objective. In addition the initiation of the demonstration project objective includes work done in November and December, 1995.
Date: March 21, 1996
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Final report for tank 241-AN-102, grab samples 2AN-95-1 through 2AN-95-6 and 102-AN-1 through 102-AN-4 (open access)

Final report for tank 241-AN-102, grab samples 2AN-95-1 through 2AN-95-6 and 102-AN-1 through 102-AN-4

Ten grab samples (2AN-95-1, 2, 3, 4A, 5A; 102-AN-1, 2, 3(A), 3(B), and 4) and one field blank (2AN-95-6) were taken from tank 241-AN-102. In support of the safety screening program, total organic carbon and cyanide were performed as secondary analyses because the differential scanning calorimetry results exceeded the notification limit. These were compared to safety screening limits at a confidence level of 95%. Waste compatibility analyses were performed on the 3 supernate samples and the field blank from the latest sampling event. Results presented in the 45 day and in this report show that the waste in Tank 241-AN-1D2 has energetics greater than 480 J/g (dry) and total organic carbon > 3 wt%; however, with a moisture content > 17 wt%, the tank may be considered ``conditionally`` safe in accordance with the Data Quality Objective to Support Resolution of the Organic Complexant Safety Issue.
Date: March 21, 1996
Creator: Esch, R.A.
Object Type: Report
System: The UNT Digital Library
N2 vs H20 as purge/hydrostatic head (open access)

N2 vs H20 as purge/hydrostatic head

This document provides the information to explain to the customer the ETP for the N2 vs H20 as Purge/Hydrostatic Head. This ETP follows the format described in Issurance of New Characterization Equipment Engineering Desk Instructions, 75200-95-013.
Date: March 21, 1996
Creator: Mast, J.C.
Object Type: Report
System: The UNT Digital Library
Synthesis and Evaluation of Thermoelectric Multilayer Films (open access)

Synthesis and Evaluation of Thermoelectric Multilayer Films

The deposition of compositionally modulated (Bi{sub 1-x}Sb{sub x}){sub 2}(Te{sub 1-y}Se{sub y}){sub 3} thermoelectric multilayer films by magnetron sputtering has been demonstrated. Structures with a period of 140{Angstrom} are shown to be stable to interdiffusion at the high deposition temperatures necessary for growth of single layer crystalline films with ZT {gt} 0.5. These multilayers are of the correct dimension to exhibit the electronic properties of quantum well structures. Furthermore it is shown that the Seebeck coefficient of the films is not degraded by the presence of this multilayer structure. It may be possible to synthesize a multilayer thermoelectric material with enhanced ZT by maximizing the barrier height through optimization of the composition of the barrier.
Date: March 21, 1996
Creator: Wagner, A. V.; Foreman, R. J.; Summers, L. J.; Barbee, T. W., Jr. & Farmer, J. C.
Object Type: Article
System: The UNT Digital Library
Systems and economic analysis of microalgae ponds for conversion of CO{sub 2} to biomass. Final report (open access)

Systems and economic analysis of microalgae ponds for conversion of CO{sub 2} to biomass. Final report

There is growing evidence that global warming could become a major global environmental threat during the 21st century. The precautionary principle commands preventive action, at both national and international levels, to minimize this potential threat. Many near-term, relatively inexpensive, mitigation options are available. In addition, long-term research is required to evaluate and develop advanced, possibly more expensive, countermeasures, in the eventuality that they may be required. The utilization of power plant CO{sub 2} and its recycling into fossil fuel substitutes by microalgae cultures could be one such long-term technology. Microalgae production is an expanding industry in the U.S., with three commercial systems (of approximately 10 hectare each) producing nutriceuticals, specifically beta-carotene, extracted from Dunaliella, and Spirulina biomass. Microalgae are also used in wastewater treatment. Currently production costs are high, about $10,000/ton of algal biomass, almost two orders of magnitude higher than acceptable for greenhouse gas mitigation. This report reviews the current state-of-the-art, including algal cultivation and harvesting-processing, and outlines a technique for achieving very high productivities. Costs of CO{sub 2} mitigation with microalgae production of oils ({open_quotes}biodiesel{close_quotes}) are estimated and future R&D needs outlined.
Date: March 21, 1996
Creator: Benemann, John R. & Oswald, William J.
Object Type: Report
System: The UNT Digital Library
Technology development for cobalt F-T catalysts. Quarterly technical progress report No. 12, July 1, 1995--September 30, 1995 (open access)

Technology development for cobalt F-T catalysts. Quarterly technical progress report No. 12, July 1, 1995--September 30, 1995

The investigation of the effect of certain promoters (Fe, Pd, and Ru) on the deactivation characteristics of Co catalysts during F-T synthesis was continued during this reporting period. All catalysts were tested first at 220{degrees}C, then at higher temperatures from 240 to 280{degrees}C, while monitoring their deactivation. The choice of these promoters was based on their intrinsic ability to enhance the hydrogenation reactions while slowing down the Boudouard reaction under the conditions used in F-T synthesis. Olefin hydrogenation and CO dissociation reactions were used individually to investigate further the nature of the deactivation process of these catalyst during F-T synthesis. Hydrogenation of isobutene (IB) was carried out in the presence of CO between 120 and 180{degrees}C and atmospheric pressure. CO dissociation activities of the catalysts were measured using a pulse technique at 2.5 atm and at temperatures between 180 and 280{degrees}C with intermittent H{sub 2} bracketing at 350{degrees}C. Promotion with high loadings of Fe or Pd resulted in catalysts with relatively lower activity and higher methane selectivity. The deactivation process and rate for catalysts containing Pd or Fe were similar to those of the non-promoted or Ru-promoted alumina-supported Co catalysts tested previously. The only exception was Co.068 with 1% Pd …
Date: March 21, 1996
Creator: Singleton, Alan H.
Object Type: Report
System: The UNT Digital Library
Texas Attorney General Opinion: DM-379 (open access)

Texas Attorney General Opinion: DM-379

Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Dan Morales, regarding a legal question submitted for clarification; Whether section 231.006 of the Family Code, regarding eligibility of child support obligors to enter into contracts paid with state funds, applies to Medicaid providers (RQ-792)
Date: March 21, 1996
Creator: Texas. Attorney-General's Office.
Object Type: Text
System: The Portal to Texas History
Texas Attorney General Opinion: DM-380 (open access)

Texas Attorney General Opinion: DM-380

Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Dan Morales, regarding a legal question submitted for clarification; Whether the Parker County Hospital District is reponsible for the payment of health care costs for inmates in the Parker County Jail who are "eligible residents" of the hospital districts under chapter 61 of the Health and Safety Code and related questions (RQ-863)
Date: March 21, 1996
Creator: Texas. Attorney-General's Office.
Object Type: Text
System: The Portal to Texas History
Texas Attorney General Opinion: LO96-034 (open access)

Texas Attorney General Opinion: LO96-034

Letter opinion issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Dan Morales, regarding a legal question submitted for clarification; Whether a peace officer may request a polygraph examination of a person who charges or seeks to charge in a complaint the commission of an offense under Penal Code section 21.11, 22.011, 22.021, or 25.02 (ID# 33693)
Date: March 21, 1996
Creator: Texas. Attorney-General's Office.
Object Type: Text
System: The Portal to Texas History