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Perturbation theory in light-cone quantization

Description: A thorough investigation of light-cone properties which are characteristic for higher dimensions is very important. The easiest way of addressing these issues is by analyzing the perturbative structure of light-cone field theories first. Perturbative studies cannot be substituted for an analysis of problems related to a nonperturbative approach. However, in order to lay down groundwork for upcoming nonperturbative studies, it is indispensable to validate the renormalization methods at the pertu… more
Date: January 1, 1992
Creator: Langnau, A.
Partner: UNT Libraries Government Documents Department
open access

Encapsulation of Hazardous Wastes Into Agglomerates

Description: The objective of this study was to investigate the feasibility of using the cementitious properties and agglomeration characteristics of coal conversion byproducts to encapsulate and immobilize hazardous waste materials. The intention was to establish an economical way of co-utilization and co-disposal of wastes. In addition, it may aid in the eradication of air pollution problems associated with the fine-powdery nature of fly ash. Encapsulation into agglomerates is a novel approach of treating… more
Date: January 28, 1992
Creator: Guloy, Aida
Partner: UNT Libraries Government Documents Department
open access

A comparative evaluation of conceptual models for the Snake River Plain aquifer at the Idaho Chemical Processing Plant, INEL

Description: Geologic and hydrologic data collected by the United States Geological Survey (USGS) are used to evaluate the existing ground water monitoring well network completed in the upper portion of the Snake River Plain aquifer (SRPA) beneath the Idaho Chemical Processing Plant (ICPP). The USGS data analyzed and compared in this study include: (a) lithologic, geophysical, and stratigraphic information, including the conceptual geologic models intrawell, ground water flow measurement (Tracejector tests)… more
Date: January 1, 1992
Creator: Prahl, C. J.
Partner: UNT Libraries Government Documents Department
open access

Theoretical study of the conformation and energy of supercoiled DNA

Description: The two sugar-phosphate backbones of the DNA molecule wind about each other in helical paths. For circular DNA molecules, or for linear pieces of DNA with the ends anchored, the two strands have a well-defined linking number, Lk. If Lk differs from the equilibrium linking number Lk{sub 0}, the molecule is supercoiled. The linking difference {Delta}Lk = Lk-Lk{sub 0} is partitioned between torsional deformation of the DNA, or twist ({Delta}Tw), and a winding of the DNA axis about itself known as … more
Date: January 1, 1992
Creator: Hunt, N. G.
Partner: UNT Libraries Government Documents Department
open access

Isotopic tracer studies of Fischer-Tropsch Synthesis over Ru/TiO{sub 2} catalysts

Description: Fischer-Tropsch synthesis is a process in which CO and H{sub 2} react to give predominantly liquid hydrocarbons. The reaction can be considered a special type of polymerization in which the monomer is produced in situ, and chain growth occurs by a sequence of independently repeated additions of the monomer to the growing chain. A investigation has been conducted to study the CO hydrogenation reaction in order to better understand catalyst deactivation and the elementary surface processes involv… more
Date: January 1, 1992
Creator: Krishna, K. R.
Partner: UNT Libraries Government Documents Department
open access

Sequence modelling and an extensible data model for genomic database

Description: The Human Genome Project (HGP) plans to sequence the human genome by the beginning of the next century. It will generate DNA sequences of more than 10 billion bases and complex marker sequences (maps) of more than 100 million markers. All of these information will be stored in database management systems (DBMSs). However, existing data models do not have the abstraction mechanism for modelling sequences and existing DBMS`s do not have operations for complex sequences. This work addresses the pr… more
Date: January 1, 1992
Creator: Li, Peter Wei-Der
Partner: UNT Libraries Government Documents Department
open access

Comparative plant uptake and microbial degradation of trichloroethylene in the rhizospheres of five plant species-- implications for bioremediation of contaminated surface soils

Description: The objective of this study was to collect data that would provide a foundation for the concept of using vegetation to enhance in situ bioremediation of contaminated surface soils. Soil and vegetation (Lespedeza cuneata, Paspalum notatum, Pinus taeda, and Solidago sp.) samples from the Miscellaneous Chemicals Basin (MCB) at the Savannah River Site were used in tests to identify critical plant and microbiological variables affecting the fate of trichloroethylene (TCE) in the root zone. Microbiol… more
Date: January 1, 1992
Creator: Anderson, T. A. & Walton, B. T.
Partner: UNT Libraries Government Documents Department
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