UNT Libraries - 9 Matching Results

Search Results

Results: 1 - 9
open access

An Analysis of Refuse Derived Fuel as an Environmentally Acceptable Fuel Alternative for the Cement Industry

Description: Resource recovery is an attractive alternative to the waste disposal problem. The chief by-product of this process, refuse derived fuel (RDF) can be co-fired in traditional coal burning facilities. The cement industry is a potential user of RDF. This study, based on a test burn done at Texas Industries Inc. in Midlothian, Texas, demonstrated the technical, environmental, and economic feasibility of using RDF fuel in a cement kiln. Technically, the cement showed no deleterious effects when RDF w… more
Date: May 1991
Creator: Brooks, Cheryl L. (Cheryl Leigh)
Item Type: Refine your search to only Thesis or Dissertation
open access

Sediment Bound Trace Metals in the White Rock Creek Watershed, Dallas and Collin Counties

Description: Areas were sampled in the White Rock Creek Watershed to examine sediment bound trace metal distributions and sorption relationships. A Kruskal-Wallis AOV found significant among area differences for most metals, and SNK-like multiple comparisons were used to group these areas. Kruskal-Wallis AOVs similarly found among area differences for sediment components that bind trace metals (Fe and Mn oxides and organic carbon) and physicochemical conditions that influence metal sorption (particle size a… more
Date: May 1990
Creator: Combest, Kyle B. (Kyle Bryan)
Item Type: Refine your search to only Thesis or Dissertation
open access

An Analysis of the Participant Selection Process Under the Comprehensive Employment and Training Act: Texas and Louisiana

Description: Federal guidelines required prime sponsors under the Comprehensive Employment and Training Act, or CETA, to serve the "significant segments" of the eligible population. This study analyzes whether prime sponsors in Texas and Louisiana correctly identified and served those segments. This study finds that eligible ethnic groups were properly identified and were served equitably; age and gender distinctions, however, were inadequately observed in the providing of services.
Date: May 1988
Creator: Drake, William D. (William Daniel), 1950-
Item Type: Refine your search to only Thesis or Dissertation
open access

The Effects of Pulp and Paper Mill Wastewaters on Phytoplankton Primary Productivity in the Red River, Louisiana

Description: Responses of phytoplankton productivity in the Red River to unbleached pulp and paper mill wastewaters were monitored using in situ ^14C incubation. Preoperational studies, conducted prior to the discharge of mill wastewaters varied seasonally, but revealed similar productivity trends when compared with postoperational studies, conducted after mill discharges began entering the Red River. Carbon assimilation rates measured downstream of mill discharge were generally greater than upstream levels… more
Date: May 1984
Creator: Holler, Jeffrey Dee
Item Type: Refine your search to only Thesis or Dissertation
open access

Multiple Regression Equations to Estimate Mean Nutrient Concentrations in Streams of North Central Texas from Landsat Derived Land Use

Description: Nutrients are of critical concern in water quality assessment. The development of empirical models to estimate mean nutrient concentrations, based on satellite derived land use, could aid water resource managers. Models using land use acreages outperformed those using percentages, and discrete urban land uses were superior to lumped urban. Regressions of the combinations of two, three and four of the eight possible land use variables were investigated. Sensitivity analyses, with one stream dele… more
Date: May 1994
Creator: Kerr, Barry Douglas
Item Type: Refine your search to only Thesis or Dissertation
open access

The Effect of Teacher Training on Internet Usage in the Classroom

Description: The purpose of this study is to determine the impact on student use of electronic information systems when teachers have been given instruction on their use. By providing teachers with a solid introduction to the technology, a handy reference book, and an easy-to-use evaluation tool, it is expected that they will incorporate information found on the internet into their lessons at least twice a month. In addition, teachers will allow students to access information on their own, provided computer… more
Date: August 1996
Creator: Meyer, Gay Lyn
Item Type: Refine your search to only Thesis or Dissertation
open access

A Survey of Landowner Attitudes Toward the Construction of Lake Ray Roberts

Description: Documentation of social impacts resulting from the construction of Lake Ray Roberts is to be incorporated into a two year post-impoundment study. Research objectives are to: 1) locate current residences of landowners and previous landowners who were displaced; 2) determine social impacts resulting from construction of Lake Ray Roberts; 3) document degree of satisfaction with current living conditions; 4) document landowners' degree of satisfaction associated with COE negotiations; 5) document l… more
Date: August 1991
Creator: Norris, Paula Sue
Item Type: Refine your search to only Thesis or Dissertation
open access

Dichotomy in American Western Mythology

Description: The fundamental dichotomy between savage and civilized man is examined within the archetypal Western myth of American culture. The roots of the dichotomy are explored through images produced between 1888 and 1909 by artists Frederic Remington and Charles Russell. Four John Ford films are then used as a basis for the "dichotomous archetype" approach to understanding Western myth in film. Next, twenty-nine "historical" and "contemporary" Western movies are discussed chronologically, from The Virg… more
Date: May 1991
Creator: Robinson, Scott E. (Scott Elmon), 1961-
Item Type: Refine your search to only Thesis or Dissertation
open access

Implementing Municipal Water Conservation Policy: Goals, Practices and the Case of Texas

Description: This study examines whether water conservation is actually being incorporated into municipal water management practices. The development of a conservation policy from a general goal declaration to specific programmatic practices is reviewed for a Texas state water agency, the Texas Water Development Board. From January 1986 through September 1989, 102 political units in Texas applied to the Board for water-related loan funds and thus were required to implement municipal water conservation plans… more
Date: May 1992
Creator: Sokulsky, Kariann Elizabeth
Item Type: Refine your search to only Thesis or Dissertation
Back to Top of Screen