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Advanced NMR approaches in the characterization of coal. Final technical report, September 1, 1990--August 31, 1993
This project addressed two main goals and one much smaller one. The main goals were (1) to improve the significance, reliability and information content in high-resolution NMR (nuclear magnetic resonance) characterization of coal samples and (2) to develop chemically informative NMR imaging techniques for coal. The minor goal was to explore advanced features of dynamic nuclear polarization (DNP) as a technique for coal characterization; this included the development of two DNP probes and the examination of DNP characteristics of various carbonaceous samples, including coals. {sup 13}C NMR advances for coal depended on large-sample MAS devices, employing either cross-polarization (CP) or direct polarization (DP) approaches. CP and DP spin dynamics and their relationships to quantitation and spin counting were elucidated. {sup 1}H NMR studies, based on CRAMPS, dipolar dephasing and saturation with perdeuteropyridine, led to a {sup 1}H NMR-based elucidation of chemical functionality in coal. {sup 1}H and {sup 13}C NMR imaging techniques, based on magic-angle spinning and rotating magnetic field gradients, were developed for introducing chemical shift information (hence, chemical detail) into the spatial imaging of coal. The TREV multiple-pulse sequence was found to be useful in the {sup 1}H CRAMPS imaging of samples like coal.
Date:
September 30, 1993
Creator:
Maciel, G. E.
Object Type:
Report
System:
The UNT Digital Library
The Albany News (Albany, Tex.), Vol. 118, No. 17, Ed. 1 Thursday, September 30, 1993
Weekly newspaper from Albany, Texas that includes local, county, and state news along with extensive advertising.
Date:
September 30, 1993
Creator:
Lucas, Donnie A.
Object Type:
Newspaper
System:
The Portal to Texas History
Altus Times (Altus, Okla.), Vol. 93, No. 172, Ed. 1 Thursday, September 30, 1993
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
September 30, 1993
Creator:
Lomenick, Rick
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Analysis of the application of decontamination technologies to radioactive metal waste minimization using expert systems
Radioactive metal waste makes up a significant portion of the waste currently being sent for disposal. Recovery of this metal as a valuable resource is possible through the use of decontamination technologies. Through the development and use of expert systems a comparison can be made of laser decontamination, a technology currently under development at Ames Laboratory, with currently available decontamination technologies for applicability to the types of metal waste being generated and the effectiveness of these versus simply disposing of the waste. These technologies can be technically and economically evaluated by the use of expert systems techniques to provide a waste management decision making tool that generates, given an identified metal waste, waste management recommendations. The user enters waste characteristic information as input and the system then recommends decontamination technologies, determines residual contamination levels and possible waste management strategies, carries out a cost analysis and then ranks, according to cost, the possibilities for management of the waste. The expert system was developed using information from literature and personnel experienced in the use of decontamination technologies and requires validation by human experts and assignment of confidence factors to the knowledge represented within.
Date:
September 30, 1993
Creator:
Bayrakal, S.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Applications of advanced petroleum production technology and water alternating gas injection for enhanced oil recovery: Mattoon Oil Field, Illinois. Quarterly report
The objectives of this project are to continue reservoir characterization of the Cypress Sandstone and identify and map a series of Facies Defined Waterflood Units (FDWS); and to design and implement water-alternating-gas WAG injection utilizing carbon dioxide. The producibility problems are permeability variation and poor sweep efficiency. Part 1 of the project focuses on the development of a computer generated geological model that will be used to select sites for the demonstration in Part 2. Included in Part 1 of the project is the drilling of an infill well, coring 100{prime} of the Cypress Sand, and various injectivity testing to gather information used to update the model. Part 2 involves field implementation of WAG. Technology Transfer includes outreach activity such as seminars, workshops, and field trips. Accomplishments for this quarter are presented.
Date:
September 30, 1993
Creator:
Baroni, M. R.
Object Type:
Report
System:
The UNT Digital Library
Archer County News (Archer City, Tex.), No. 39, Ed. 1 Thursday, September 30, 1993
Weekly newspaper from Archer City, Texas that includes local, state, and national news along with advertising.
Date:
September 30, 1993
Creator:
Lobpries, F. Mike
Object Type:
Newspaper
System:
The Portal to Texas History
The Baytown Sun (Baytown, Tex.), Vol. 71, No. 286, Ed. 1 Thursday, September 30, 1993
Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date:
September 30, 1993
Creator:
Dobbs, Gary
Object Type:
Newspaper
System:
The Portal to Texas History
The Big Lake Wildcat (Big Lake, Tex.), Vol. 68, No. 39, Ed. 1 Thursday, September 30, 1993
Weekly newspaper from Big Lake, Texas that includes local, state and national news along with advertising.
Date:
September 30, 1993
Creator:
Werst, David
Object Type:
Newspaper
System:
The Portal to Texas History
Body growth considerations in age-specific dosimetry. Final report
This report describes the manner in which the age-specific dosimetric calculations of the International Commission on Radiological Protection (ICRP) addressed changes in organ size that occur with age. The approach involves an interpolation of dosimetric information derived for six reference individuals using the inverse of the total body mass as the interpolation variable. An alternative formulation is investigated that employs a functional representation of the organ mass as a function of age in conjunction with an explicit formulation of the dosimetric factors in terms of organ mass. Using an exponential-logistic growth function as suggested by Walker, this report demonstrates, through application to the dosimetry of radioiodines in the thyroid, that the alternative formulation can be formulated and implemented. Although either approach provides a workable basis for age-specific dosimetry, it is clear that the functional representation of organ growth has some attractive features. However, without question, the major difficulty is the quality and quantity of data available to address the age- and gender-specific parameters in the dosimetric formulations.
Date:
September 30, 1993
Creator:
Eckerman, K. F.
Object Type:
Report
System:
The UNT Digital Library
Bogata News (Bogata, Tex.), Vol. 83, No. 24, Ed. 1 Thursday, September 30, 1993
Weekly newspaper from Bogata, Texas that includes local, state, and national news along with advertising.
Date:
September 30, 1993
Creator:
Nichols, Nanalee & Nichols, Thomas
Object Type:
Newspaper
System:
The Portal to Texas History
Burleson Star (Burleson, Tex.), Vol. 28, No. 101, Ed. 1 Thursday, September 30, 1993
Semi-weekly newspaper from Burleson, Texas that includes local, state, and national news along with advertising.
Date:
September 30, 1993
Creator:
Ellertson, Sally
Object Type:
Newspaper
System:
The Portal to Texas History
The Canadian Record (Canadian, Tex.), Vol. 103, No. 39, Ed. 1 Thursday, September 30, 1993
Weekly newspaper from Canadian, Texas that includes local, state, and national news along with extensive advertising.
Date:
September 30, 1993
Creator:
Ezzell, Nancy & Brown, Laurie Ezzell
Object Type:
Newspaper
System:
The Portal to Texas History
Cherokeean/Herald (Rusk, Tex.), Vol. 145, No. 35, Ed. 1 Thursday, September 30, 1993
Weekly newspaper from Rusk, Texas that includes local, state and national news along with extensive advertising.
Date:
September 30, 1993
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Chickasha Daily Express (Chickasha, Okla.), Vol. 102, No. 174, Ed. 1 Thursday, September 30, 1993
Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date:
September 30, 1993
Creator:
Ferris, Terry
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Chickasha Star (Chickasha, Okla.), Vol. 92, No. 28, Ed. 1 Thursday, September 30, 1993
Weekly newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date:
September 30, 1993
Creator:
unknown
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Circular magnetic x-ray dichroism in rare earth compounds
This report discusses the following topics: Circular magnetic x-ray dichroism at the ER L{sub 3} Edge; angular dependence of circular magnetic x-ray dichroism in rare earth compounds: and circular magnetic x-ray dichroism in crystalline and amorphous GDFE{sub 2}.
Date:
September 30, 1993
Creator:
Jonathan, L.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Clean coal technology: Export finance programs
Participation by US firms in the development of Clean Coal. Technology (CCT) projects in foreign countries will help the United States achieve multiple national objectives simultaneously--addressing critical goals related to energy, environmental technology, industrial competitiveness and international trade. US participation in these projects will result in an improved global environment, an improvement in the balance of payments and an increase in US jobs. Meanwhile, host countries will benefit from the development of economically- and environmentally-sound power facilities. The Clean Air Act Amendments of 1990 (Public Law 101-549, Section 409) as supplemented by a requirement in the Energy Policy Act of 1992 (Public Law 102-486, Section 1331(f)) requires that the Secretary of Energy, acting through the Trade Promotion Coordinating Committee Subgroup on Clean Coal Technologies, submit a report to Congress with information on the status of recommendations made in the US Department of Energy, Clean Coal Technology Export Programs, Report to the United States Congress, February 1992. Specific emphasis is placed on the adequacy of financial assistance for export of CCTS. This report fulfills the requirements of the Act. In addition, although this report focuses on CCT power projects, the issues it raises about the financing of these projects are also …
Date:
September 30, 1993
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
The Comanche Chief (Comanche, Tex.), Vol. 121, No. 20, Ed. 1 Thursday, September 30, 1993
Weekly newspaper from Comanche, Texas that includes local, state, and national news along with advertising.
Date:
September 30, 1993
Creator:
Wilkerson, James C., III
Object Type:
Newspaper
System:
The Portal to Texas History
Cooper Review (Cooper, Tex.), Vol. 113, No. 39, Ed. 1 Thursday, September 30, 1993
Weekly newspaper from Cooper, Texas that includes local, state, and national news along with advertising.
Date:
September 30, 1993
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Corrosion tests of carbon steel exposed to a simulated DWPF recycle stream
Coupon immersion tests of ASTM A537 Class 1 carbon steel in simulated DWPF recycle solutions did not generate shock-sensitive deposits, consistent with two previous tests at SRTC. Results of three sets of tests indicate that the formation of detectable amounts of shock-sensitive deposits is not possible under test conditions. Solutions used included the increased nitrate concentration (0.05 M vs.the 0.01 M used previously) that reflects the introduction of ammonia scrubbing in the DWPF. The nitrite and hydroxide concentrations were 0.042 M and 0.5 M, respectively, which are the current Process Requirement concentrations for the DWPF Recycle Collection Tank. As a result of the increased nitrate level, the coupon showed superficial uniform corrosion at a rate {le} 0.4 mils per year (0.0004 in. per year) and pitting corrosion with a maximum depth of 0.7 mils (0.0007 in.). Electrochemical corrosion tests to revise the nitrite concentration limit to accommodate the higher nitrate concentration will be completed in October, 1993.
Date:
September 30, 1993
Creator:
Zapp, P. E.
Object Type:
Report
System:
The UNT Digital Library
D0 Solenoid Upgrade Project: Thermal Contraction Analysis for the D0 Solenoid Chimney
This engineering note documents the thermal contraction analysis that was done for the D-Zero solenoid chimney. The analysis was done as support of the 'Design Report of the 2 Tesla Superconducting Solenoid for the Fermilab DO Detector upgrade.' The cryogenic LHE and LN2 lines were analyzed for combined pressure, thermal movement, and dead weight. The tubing was stress analyzed per ASME code for Pressure Piping, standard ANSI AS:ME B31.3, for eight combinations ofthermal loading. A commercial pipe stress analysis and design system by Algor{reg_sign} was used for the analysis. Stresses calculated were well below allowables. Based on the analysis, the cryogenic lines will be installed at an offset from the vacuum jacket centerline so that during steady state cold operation, the cryogenic lines will be in a proper location.
Date:
September 30, 1993
Creator:
Rucinski, R.
Object Type:
Report
System:
The UNT Digital Library
Defects and transport in mixed oxides. Progress report, [December 22, 1992--September 30,1993]
Progress has been made in: nonstoichiometry of rock salt structure oxide solid solutions; cation tracer diffusion in oxide solid solutions of the types (Co,Mn){sub 3-{delta}}O{sub 4} and (Co,Fe){sub 1-{Delta}}O; electrical conductivity in solid solution (Co,Fe){sub 1-{Delta}}O; Monte-Carlo simulation of the cation diffusion in spinel solid solutions; thermodynamic modelling of the ternary phase diagram of the system Co-Fe-Mn-O and the boundary systems Co-Fe-O and Fe-Mn-O at 1200 C; and interdiffusion in spinel solid solutions.
Date:
September 30, 1993
Creator:
Dieckmann, R.
Object Type:
Report
System:
The UNT Digital Library
DISSS/ET modernization feasibility of adapting existing software and hardware technologies
The Fission Energy and Systems Safety Program (FESSP) at LLNL was funded by the DOE Office of Safeguards and Security to develop an integrated system, hereafter referred to as the Security Clearance Electronic Processing, Transfer, Evaluation, and Recordkeeping (SCEPTER) System, for the electronic collection and transfer of personnel security data between clearance offices at contractor sites and DOE field offices and the Office of Personnel Management(OPM). This system will use existing software and hardware technologies where feasible. The project will consist of three phases. The first phase will investigate user needs, determine the feasibility of using existing technologies, and define project requirements. The second phase will be a pilot project to develop the computer systems and procedures required to automate the security clearance work flow within DOE and between DOE and OPM. Once the pilot system is implemented and tested, the decision to extend the system throughout DOE can be made. This third phase, the extension to a full production system, will require the investment of considerable funds in equipment and in the development of both a computer system and management infrastructure to support its successful operation. This investment will be undertaken only after the pilot system is operational and …
Date:
September 30, 1993
Creator:
Strait, R.S.
Object Type:
Report
System:
The UNT Digital Library
The Dual Role of Oxygen Functions in Coal Pretreatment and Liquefaction: Crosslinking and Cleavage Reactions
The overall objective of this project was to elucidate and model the dual role of oxygen functions in thermal pretreatment and liquefaction of low rank coals through the application of analytical techniques and theoretical models. The project was an integrated study of model polymers representative of coal structures, raw coals of primarily low rank, and selectively modified coals in order to provide specific information relevant to the reactions of real coals. The investigations included liquefaction experiments in microautoclave reactors, along with extensive analysis of intermediate solid, liquid and gaseous products. Attempts were made to incorporate the results of experiments on the different systems into a liquefaction model.
Date:
September 30, 1993
Creator:
Serio, Michael; Kroo, Erik; Charpenay, Sylvie & Solomon, Peter
Object Type:
Report
System:
The UNT Digital Library