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Spatial and Temporal Influences of Water Quality on Zooplankton in Lake Texoma (open access)

Spatial and Temporal Influences of Water Quality on Zooplankton in Lake Texoma

Seventy-one aquatic species including the copepodids and nauplii were identified from Lake Texoma from August 1996 to September 1997. Zooplankton community structure, abundance and spatial and temporal distributions were compared among five lake zones delineated a priori based on chloride concentration. The zones, in order of decreasing chloride concentration, are the Red River zone (RRZ), Red river Transition zone (RRTZ), Main Lake zone (MLZ), Washita River Transition zone (WRTZ) and Washita River zone (WRZ). Bray Curtis Similarity Index showed community structure was most similar in the two Red River arm zones, the two Washita River arm zones and the MLZ. Zooplankton abundance was greatest in the Red River arm (312 org/L), intermediate in the Washita River arm (217 org/L) and least in the Main Lake body (103 org/L). A significant increase in the abundance of a deformed rotifer, Keratella cochlearis, was observed mainly in the Red River arm during a second study from March 1999 to June 1999. Seasonal dynamics, rather than spatial dynamics, were more important in structuring the zooplankton community, especially in the two river arms. Spatial variance was solely attributed to station and zone effects independent of time for a few crustacean species and many of the …
Date: May 2000
Creator: Franks, Jessica L.
System: The UNT Digital Library
Spatial and Temporal Patterns of Areal and Volumetric Phytoplankton Productivity of Lake Texoma (open access)

Spatial and Temporal Patterns of Areal and Volumetric Phytoplankton Productivity of Lake Texoma

Phytoplankton productivity of Lake Texoma was measured for one year from August 1999 to August 2000 for four stations, using the oxygen change method and laboratory incubation. Mean values of the photosynthetic parameters, PBmax and alphaB ranged from 4.86 to 46.39 mg O2.mg Chl-1.hr-1 for PBmax and 20.06 to 98.96 mg O2.mg Chl-1.E-1.m2 for alphaB. These values were in the range to be expected for a highly turbid, temperate reservoir. Estimated gross annual areal productivity ranged from 594 g C.m2.yr-1 (P.Q. = 1.2), at a station in the Washita River Zone to 753 g C.m2.yr-1 at a station in the Red River Zone, of the reservoir. Gross annual areal productivity at Station 17, in the Main Lake Zone, was 708 g C.m2.yr-1. Gross areal and volumetric productivity showed distinct seasonal variation with Photosynthetically Available Radiation (PAR) and temperature. Trophic status estimated on a station-by-station basis, using net productivity values derived from gross productivity and respiration estimates, was mesotrophic for all the stations, though one station approached eutrophy. Net productivity values ranged from 0.74 to 0.91 g C. m-2.d-1. An algal bioassay conducted at two stations in August 2000, revealed that phosphorus was most likely the nutrient limiting photosynthesis at both …
Date: August 2001
Creator: Baugher, Tessy
System: The UNT Digital Library
A Study of the Ways in Which the Canadian County Oklahoma Farm Women's Home Demonstration Club Market Members Earned and Used Their Income 1931 - 1938 (open access)

A Study of the Ways in Which the Canadian County Oklahoma Farm Women's Home Demonstration Club Market Members Earned and Used Their Income 1931 - 1938

This study examines the membership of the Canadian County Oklahoma Farm Women's Home Demonstration Club Market and its funding usage between the years 1931 and 1938.
Date: August 1939
Creator: Thompson, Harvey Anne
System: The UNT Digital Library
Disposition of Disputed Cases, Involving Non-Basic Wage, Union Security, and Non-Wage Issues of the Oil Refining Industry by the Eighth Regional War Labor Board (open access)

Disposition of Disputed Cases, Involving Non-Basic Wage, Union Security, and Non-Wage Issues of the Oil Refining Industry by the Eighth Regional War Labor Board

This investigation is a study of the issues involved in the disputed cases pertaining to the Oil Refining Industry which were certified to the Eighth Regional War Labor Board serving Texas, Oklahoma, and Louisiana during World War II.
Date: 1947
Creator: Grubbs, Kenneth R.
System: The UNT Digital Library
A Comparison of the Philosophical Concepts of Leading Philosophers with those of Certain Southern Oklahoma Educators (open access)

A Comparison of the Philosophical Concepts of Leading Philosophers with those of Certain Southern Oklahoma Educators

This investigation proposes to present a comparison of two compendiums of philosophy, and in the light of this comparison determine the prevailing types of educational philosophy and practice used in certain schools of southern Oklahoma.
Date: 1941
Creator: Henry, Isabelle Morton
System: The UNT Digital Library
Evaluation of the Formal Versus the Informal Method of Teaching Arithmetic (open access)

Evaluation of the Formal Versus the Informal Method of Teaching Arithmetic

The problem in this investigation has a three-fold purpose: namely, (1) to determine the results of delaying formal arithmetic until the fourth grade; (2) to ascertain the results reflected in the reading abilities of children when the time ordinarily spent on drill and organized instruction in arithmetic is given to reading, the diverted time being spent in reading arithmetic stories, playing games, and in using other arithmetical processes in connection with school activities; (3) to compare the results of a behavior journal kept for each child in the experimental group and in the control group.
Date: 1942
Creator: Garrett, Atlee Margaret
System: The UNT Digital Library
An Analysis of the Contribution of a Given Educational System to the Defense of Democracy (open access)

An Analysis of the Contribution of a Given Educational System to the Defense of Democracy

The purpose of this study is four-fold: (1) to present through an analysis of life needs the nature and source of a curriculum best adapted to democracy; (2) to present fairly some of the reasons why a curriculum must be founded on democracy if democracy survives the dangerous forces that threaten to obliterate its very existence; (3) to make an unprejudiced analysis of the regular situation now existing in Oklahoma schools at the present time to find whether her schools are meeting this challenge to democracy; and (4) to offer from the comparison of the summaries of these data recommendations whereby all schools may have a curriculum "rooted in the life of its people"--a program that contributes to democracy and permanent national defense.
Date: 1941
Creator: Maxwell, Maude Napier
System: The UNT Digital Library
A Comparative Study of the Qualifications and Duties of City School Superintendents' Secretaries in Oklahoma (open access)

A Comparative Study of the Qualifications and Duties of City School Superintendents' Secretaries in Oklahoma

The problem in this study is to make a comparison of the qualifications and duties of secretaries of city school superintendents in Oklahoma, with regard to academic training stenographic duties, duties pertaining to financial records and reports, banking duties, duties pertaining to general records and reports, duties pertaining to bus and transportation reports, teaching duties and miscellaneous duties.
Date: 1943
Creator: Glenn, Della Ola
System: The UNT Digital Library
A Cooperative Part-Time Training Program in the Public Schools of Tulsa, Oklahoma (open access)

A Cooperative Part-Time Training Program in the Public Schools of Tulsa, Oklahoma

The purpose of this study is to present the basic facts and principles involved in the organization and administration of the cooperative part-time training program in the public schools of Tulsa, Oklahoma.
Date: 1947
Creator: Taylor, S. Wayne
System: The UNT Digital Library
The Development of Railroads in Oklahoma (open access)

The Development of Railroads in Oklahoma

This thesis is a study of the growth and expansion of railroads in Oklahoma.
Date: 1948
Creator: McDonough, Terrence C.
System: The UNT Digital Library
The Incidence of Non-Promotion in the Intermediate Grades of the Elementary School and some of its Relationships (open access)

The Incidence of Non-Promotion in the Intermediate Grades of the Elementary School and some of its Relationships

The purpose of this investigation is to determine the incidence of retardation or non-promotion and the relationship of various characteristics of the retarded children in the fourth, fifth, and sixth grades of Sunset School.
Date: 1947
Creator: Morgan, Blanche Petty
System: The UNT Digital Library
A Study of Industrial Arts Programs of the Teacher Training Institutions of Oklahoma to Determine if the Teachers of Industrial Arts in the High Schools of Oklahoma are Receiving Adequate Training (open access)

A Study of Industrial Arts Programs of the Teacher Training Institutions of Oklahoma to Determine if the Teachers of Industrial Arts in the High Schools of Oklahoma are Receiving Adequate Training

The purpose of this study is to determine to what extent the high school teachers of industrial arts in the State of Oklahoma are being used and trained to meet the apparent needs and trends in the field of industrial arts; and to make the results available in a helpful way to all persons interested in working in the field, or in preparing for, or preparing others for service in the field.
Date: 1950
Creator: Enderby, David R.
System: The UNT Digital Library
The Need for a Comprehensive Physical Education Program and Proposed Plan for Marietta, Oklahoma Public Schools (open access)

The Need for a Comprehensive Physical Education Program and Proposed Plan for Marietta, Oklahoma Public Schools

The purpose of this study is not only to show the need of a comprehensive physical education program but to submit a proposed plan to fulfill the need and correlating this plan of improvement with the traditional subject-matter type of school curriculum.
Date: 1950
Creator: Hopkins, John R.
System: The UNT Digital Library
An Evaluation of the School Lunch Programs of Bryan County, Oklahoma to Determine a Sound Procedure for Their Operation (open access)

An Evaluation of the School Lunch Programs of Bryan County, Oklahoma to Determine a Sound Procedure for Their Operation

In this study it is proposed to survey ten selected school lunch programs in Bryan County, Oklahoma, in order to determine a sound procedure for the operation of a successful school lunch program. the increasing knowledge of nutrition as an element in the scholastic progress of children is a factor that the school administrator must consider.
Date: 1950
Creator: Howard, C.F.
System: The UNT Digital Library
A Study of Grievance Procedure in Labor-Management Relations as it Operates within the Eighth Regional War Labor Board (open access)

A Study of Grievance Procedure in Labor-Management Relations as it Operates within the Eighth Regional War Labor Board

This investigation is a study of grievance machinery in industrial relations, as it operates within the Eighth Regional War Labor Board, which serves the states of Texas, Oklahoma, and Louisiana. By grievance machinery is meant the formal procedure through which the worker or his representative must proceed in order to get a grievance or complaint about working conditions, wages, or other items, heard and settled.
Date: 1945
Creator: Martin, Marie G.
System: The UNT Digital Library
A Study of the Most Prevalent Postural Deviations of Two Hundred Fourteen Children of 1946-47 and 1947-48 at Pershing Elementary School, Tulsa, Oklahoma, to Determine the Needs and Progress Made after the Application of the Corrective Program (open access)

A Study of the Most Prevalent Postural Deviations of Two Hundred Fourteen Children of 1946-47 and 1947-48 at Pershing Elementary School, Tulsa, Oklahoma, to Determine the Needs and Progress Made after the Application of the Corrective Program

The special problem which the writer chose was the study of the most prevalent postural defects of two hundred fourteen school children at Pershing Elementary School, Tulsa, Oklahoma, and to prepare and to administer a program of corrective exercises, and further to determine the progress made by the children after the application of the corrective program for the school years 1946-47 through 1947-48.
Date: 1948
Creator: Hibler, Zelda Faye
System: The UNT Digital Library
The Improvement of Reports to Parents (open access)

The Improvement of Reports to Parents

The purpose of this study is to determine an adequate and justifiable report to the parents regarding the progress of students in the public schools of the Colbert community, Colbert, Oklahoma.
Date: 1951
Creator: Mantooth, Elmer Herle
System: The UNT Digital Library
Status of Certain Aspects of Accounting Education in Oklahoma Colleges in 1957-1958 (open access)

Status of Certain Aspects of Accounting Education in Oklahoma Colleges in 1957-1958

The main problem of this investigation is to study certain aspects of accounting education in the senior and junior colleges of Oklahoma during the school year 1957-1958 for the purpose of making proposals for its advancement.
Date: August 1960
Creator: Rainey, Bill G.
System: The UNT Digital Library
The Effects of Hexadecanol on the Microbiota of Lake Hefner (open access)

The Effects of Hexadecanol on the Microbiota of Lake Hefner

It seemed desirable to investigate more fully the effect of hexadecanol on the microbial population of a reservoir. It was the purpose of this investigation to determine the effect of hexadecanol on the micro-biota of Lake Hefner, to ascertain which organisms were stimulated by hexadecanol both in the laboratory and the reservoir, and to investigate the degradation of hexadecanol by microorganisms selected from Lake Hefner.
Date: May 1968
Creator: Dickson, Kenneth L.
System: The UNT Digital Library
A Study of the Training Received and Duties Performed by the Maintenance Employees in a Selected Group of Acme Brick Company Plants (open access)

A Study of the Training Received and Duties Performed by the Maintenance Employees in a Selected Group of Acme Brick Company Plants

The major purposes of this study were (1) to obtain information relating to the number and types of areas of work included in the routine duties performed by the maintenance employees employed in a selected group of Acme Brick Company production plants, (2) to determine the nature of any training that may have assisted in the development of their ability to perform the skills normally involved in each area of work, and (3) to recommend to Acme Brick Company areas of instruction to be included in a training program for its employees.
Date: January 1968
Creator: Hickman, Cleo F.
System: The UNT Digital Library
A Proposal for the Establishment of a Low-Power, Frequency Modulated, Educational Radio Station as Exemplified by Oklahoma Baptist University (open access)

A Proposal for the Establishment of a Low-Power, Frequency Modulated, Educational Radio Station as Exemplified by Oklahoma Baptist University

The purpose of this study was to investigate the various aspects of low-power frequency modulation educational broadcasting and to formulate from the findings a guide for the establishment of stations on campuses as exemplified at Oklahoma Baptist University. It is hoped that this report will provide detailed information of interest and value to that university, its staff, its present and future scholars, and to other school and individuals interested in building an educational broadcast facility.
Date: January 1968
Creator: Lane, Kenneth R.
System: The UNT Digital Library
A Bacteriological Survey of a Freshwater Reservoir (open access)

A Bacteriological Survey of a Freshwater Reservoir

In this study organisms that can be subcultured from lake water, using a prescribed procedure, limit, to an extent, the population, or portions of the population, that can be monitored. In essence, what is taking place is that a set of conditions is set forth and a study is made of the bacteria that will grow under these prescribed conditions.
Date: January 1968
Creator: Stiles, John Clayborn
System: The UNT Digital Library
The Stoneflies (Plecoptera) of Oklahoma (open access)

The Stoneflies (Plecoptera) of Oklahoma

Distributional data and taxonomic keys art presented for thirty-four species of Plecoptera known to occur in Oklahoma. Ten species are new records for the state. Descriptions are provided for two species new to science, Zealeuctra cherokee and Isoperla brevis, and for the previously unknown male of Strophopteryx cucullata Frison and female of Helopicus nalatus (Frison).
Date: August 1972
Creator: Stark, William P.
System: The UNT Digital Library
The Impact of Medicare on the Distribution of Public Health Care Expenditures in Oklahoma (open access)

The Impact of Medicare on the Distribution of Public Health Care Expenditures in Oklahoma

The purpose of the study is to determine what effect medicare has had on the distribution of public health care expenditures in the state of Oklahoma. The study tests that there is a significant correlation between medical vendor payments and indigency in Oklahoma or in other words that pre-medicare public health care dollars in Oklahoma were distributed to indigents.
Date: December 1972
Creator: Coffey, Vernon Eugene
System: The UNT Digital Library