You limited your search to:

  Partner: UNT Libraries
 Degree Discipline: Biology
 Collection: UNT Theses and Dissertations
A Serological Study of the Antigenic Fractions of the Aerobic Actinomycetes

A Serological Study of the Antigenic Fractions of the Aerobic Actinomycetes

Date: June 1964
Creator: Hutcheson, Josephine
Description: The purpose of this investigation is to alleviate this confusion by first testing means of separating the antigenic components of the aerobic actinomycetes--obtaining, if possible, a monospecific antigen. Antisera produced from these monospecific antigens will then be tested for their possible use in the serological grouping of the aerobic actinomycetes.
Contributing Partner: UNT Libraries
An Evaluation of the United States Soil Conservation Service Program of Grassland Recovery on the Land Utilization Project in Wise county, Texas

An Evaluation of the United States Soil Conservation Service Program of Grassland Recovery on the Land Utilization Project in Wise county, Texas

Date: August 1952
Creator: Hyman, Ruel Richard
Description: This investigation was undertaken in order to evaluate the United States Soil Conservation Service program of grassland recovery on the land utilization project in Wise County, Texas.
Contributing Partner: UNT Libraries
Treatment of Akr Mouse Leukemia with Specific Heterologous Antiserum

Treatment of Akr Mouse Leukemia with Specific Heterologous Antiserum

Date: August 1959
Creator: Ingebrigtsen, Norman Arnold
Description: This thesis has been an attempt to observe the role antibodies play in extending the life span of tumor infected Akr mice.
Contributing Partner: UNT Libraries
Histological age estimation of the midshaft clavicle using a new digital technique.

Histological age estimation of the midshaft clavicle using a new digital technique.

Date: August 2004
Creator: Ingraham, Mark R.
Description: Histological methods to estimate skeletal age at death, in forensic cases, are an alternative to the more traditional gross morphological methods. Most histological methods utilize counts of bone type within a given field for their estimation. The method presented in this paper uses the percentage area occupied by unremodeled bone to estimate age. The percentage area occupied by unremodeled bone is used in a linear regression model to predict skeletal age at death. Additionally, this method uses digital software to measure area rather than the traditional technique in which a gridded microscope is used to estimate area. The clavicle was chosen as a sample site since it is not a weight bearing bone and has little muscular insertion. These factors reduce the variation seen as a result of differences in lifestyle or activity pattern.
Contributing Partner: UNT Libraries
A Rapid Modification of a Standard Disk-plate Antibiotic Susceptibility Test

A Rapid Modification of a Standard Disk-plate Antibiotic Susceptibility Test

Date: January 1955
Creator: Jackson, Leslie Warren
Description: The objective of the work reported in this paper is one of a two-fold nature. The first objective is to develop a disk-plate sensitivity test that is more rapid than that of existing methods. The second requisite is that the materials, techniques, interpretation, and reporting of results be the sane as those required for the disk-plate method described in the Difco Manual.
Contributing Partner: UNT Libraries
Classification of toolmark surfaces on zipper teeth

Classification of toolmark surfaces on zipper teeth

Date: December 1999
Creator: Jacobsen, Dawn
Description: This study proposes the classification of the toolmark under the heads of zipper teeth as a subclass characteristic as outlined by the Association of Firearm and Toolmark Examiners (AFTE). Two separate cases in which zipper teeth were found at crime scenes prompted this study. Brass zipper teeth manufactured by YKK were taken from 20 pairs of jeans and studied using a Reichert comparison microscope at 4X power. Photographs were taken and over 750 comparisons made. It was found that the toolmarks on each side on the 20 zippers were unique and independent of all other sides. The observations made in this study indicate that classifying zipper teeth toolmarks as a subclass characteristic is valid.
Contributing Partner: UNT Libraries
Submerged wood inhabiting macoinvertebrates of the Elm Fork of the Trinity River, Texas: Assemblage analyses, comparisons to the benthic fauna, and a study of  Cyrnellus fraternus (Trichoptera: Polycentropodidae)

Submerged wood inhabiting macoinvertebrates of the Elm Fork of the Trinity River, Texas: Assemblage analyses, comparisons to the benthic fauna, and a study of Cyrnellus fraternus (Trichoptera: Polycentropodidae)

Access: Use of this item is restricted to the UNT Community.
Date: August 2001
Creator: Johnson, Zane B.
Description: Taxonomic composition and spatio-temporal variability of macroinvertebrates inhabiting snags were examined from an 8-km segment of the Elm Fork of the Trinity River. Seventy-seven macroinvertebrate taxa were collected from submerged wood during the study. Assemblages were highly variable spatially and temporally, especially among seasons. An ordination of species and environment did not find snag taxa to have striking correlations with many of the selected environmental variables, although there were some trends in flow-mediated species distributions. There were significant seasonal differences in the abundances of some taxa, particularly among the Chironomidae (Diptera). The Tribe Orthocladiini was numerically abundant during the winter, while the Tribes Chironomini and Tanytarsini dominated the summer and autumn. Additionally, this study included a secondary production and microdistribution analysis of a population of the caddisfly Cyrnellus fraternus. Distributions of C. fraternus were restricted to snags, the most stable substratum for retreat building and for resisting periodic high waters. Larvae were not found in the soft sand and mud benthic habitats near submerged wood. The insects were multivoltine with a minimum of three generations per year. Pupae were collected July through September and adults emerged from May through October. The population overwintered as larvae. Estimated annual production was 1,015.4 ...
Contributing Partner: UNT Libraries
Home range analysis of rehabilitated and released great horned owls (Bubo virginianus) in Denton County, Texas, through radio telemetry.

Home range analysis of rehabilitated and released great horned owls (Bubo virginianus) in Denton County, Texas, through radio telemetry.

Date: December 2007
Creator: Johnston, Jennifer Lynn
Description: Raptor rehabilitation has become commonplace globally, yet studies on the survival and adaptation of great horned owls (Bubo virginianus) after release has been neglected to an appreciable extent. The primary objective of this study is to provide quantitative data on the success of rehabilitated and released great horned owls in the North Texas region. Owls (N=12) were rehabilitated and released onto the Ray Roberts Greenbelt Corridor in Denton County, Texas, and monitored using radio telemetry to evaluate home range (November 2002 - February 2005). With approximately 75% of the birds released for this study surviving until transmitter battery failure, it is believed that the rehabilitation process was successful for these birds.
Contributing Partner: UNT Libraries
The Seasonal Cycle in the Testis of the Large-Mouthed Black Bass, Huro Salmoides, (Lacepede)

The Seasonal Cycle in the Testis of the Large-Mouthed Black Bass, Huro Salmoides, (Lacepede)

Date: 1942
Creator: Johnston, Perry Max
Description: Study to determine the seasonal changes in histological and cytological structures in the testis of Huro Salmoides (Lacepede), the large-mouthed black bass.
Contributing Partner: UNT Libraries
The Effect of Avidin Injected Intraperitoneally on the Course of Leukemia in the Mouse

The Effect of Avidin Injected Intraperitoneally on the Course of Leukemia in the Mouse

Date: January 1961
Creator: Jones, George Adams, III
Description: The current work was undertaken to test the ability of avidin to affect the course of leukemia when administered intraperitoneally.
Contributing Partner: UNT Libraries