Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

Louisiana State University

Discipline
Keyword
Publication Year
Publication
Publication Type
File Type

Articles 39421 - 39450 of 45176

Full-Text Articles in Entire DC Network

Hydrocracking Of Model Coal Derived Liquid Components Over A Zeolite Catalyst. (Volumes I And Ii) (Fluorene, Decalin)., William David Constant Jan 1984

Hydrocracking Of Model Coal Derived Liquid Components Over A Zeolite Catalyst. (Volumes I And Ii) (Fluorene, Decalin)., William David Constant

LSU Historical Dissertations and Theses

Hydrocracking of fluorene was investigated over a nickel loaded Y zeolite in a fixed bed flow reactor using decalin as a donor solvent. This system served as a model for typical commercial donor solvent operations in order to develop a representative kinetic model and propose a reaction mechanism for refining of coal derived liquids. After performing a qualitative investigation, base operating conditions of 661(DEGREES)K, 14.8 bar total pressure, 20 weight percent fluorene in decalin and a hydrogen to hydrocarbon ratio of 42 at a space-time of 4.8 seconds were established for the process. For each experimental series, the variable of …

Go to article

The Relationship Between Photosynthesis And The Capacity For Nitrogen Fixation In Soybean., Eddie Paul Millhollon Jan 1984

The Relationship Between Photosynthesis And The Capacity For Nitrogen Fixation In Soybean., Eddie Paul Millhollon

LSU Historical Dissertations and Theses

Diurnal trends in leaf carbohydrate partitioning and nodule activity in soybeans under natural conditions and the irradiance level required to allocate sufficient carbohydrate to obtain maximum rates of N(,2)(C(,2)H(,2)) reduction were studied. Soybeans grown outdoors maintained constant levels of soluble carbohydrates in the leaves and constant rates of N(,2) fixation and root + nodule respiration when root temperature was kept constant but shoot temperature varied. When plants were subjected to a 40-hour dark period, then exposed to 200 to 1000 (mu)E m('-2) sec('-1), 200 (mu)E m('-2) sec('-1) resulted in maximum leaf soluble carbohydrate and nodule activity. Results suggest that nodule …

Go to article

The Status Of Keyboard Harmony In Nasm-Approved Colleges In The Southeastern United States (Class Piano, Functional Skills)., Dona Sanders Lusted Jan 1984

The Status Of Keyboard Harmony In Nasm-Approved Colleges In The Southeastern United States (Class Piano, Functional Skills)., Dona Sanders Lusted

LSU Historical Dissertations and Theses

The purpose of this study was to determine the status of keyboard harmony in NASM-Approved colleges and universities in the eleven states in the Southern Division of MENC. Most music educators recognize the importance of keyboard harmony in the college music curriculum. However, much controversy appears to exist as to the position keyboard harmony should occupy at the college level. Music educators disagree as to whether keyboard harmony should be taught in the theory class, piano class, and/or as a separate course. Questionnaires were mailed to the 124 schools which met the above delimitations, of which 70 percent were usable …

Go to article

The Effects Of Widescreen Television On Local And National Newscaster Credibility: An Experimental Study., Donald Ray Mott Jan 1984

The Effects Of Widescreen Television On Local And National Newscaster Credibility: An Experimental Study., Donald Ray Mott

LSU Historical Dissertations and Theses

The purpose of this study was to determine if there were any perceived differences in credibility between the widescreen television treatment, standard screen treatment and national and local newscasters. The data revealed no significant differences as a result of the widescreen television treatment. In addition, no significant main effects were observed between the newscaster treatments, "local" and "national," suggesting that as a group, viewers do not appear to have any predispositional attitudes dependent upon specific criteria toward the credibility of either type of newscaster. The design of the experiment was a classic 2 x 2 factorial design. The stimulus was …

Go to article

Ordered Models For The Lambda Calculus., Frederick Joseph Sullivan Jan 1984

Ordered Models For The Lambda Calculus., Frederick Joseph Sullivan

LSU Historical Dissertations and Theses

Although the (lamda)-calculus has been studied for over fifty years, the first models for the lambda calculus were constructed by Dana Scott in 1972. Scott's models were constructed using inverse limits of continuous lattices. We investigate this inverse limit construction in the context of up-complete posets with zero. We show that the correspondence between an up-complete poset with zero P and its associated model for the (lamda)-calculus defines a monofunctor between appropriate categories. We calculate the values in the model corresponding to several combinators in the lambda calculus. Finally, we investigate certain submonoids of the monoid of combinators. We show …

Go to article

Weierstrass Points On Gorenstein Curves., Carl Archer Widland Jan 1984

Weierstrass Points On Gorenstein Curves., Carl Archer Widland

LSU Historical Dissertations and Theses

This thesis generalizes the classical definition of a Weierstrass point to integral projective Gorenstein curves. For X an integral projective Gorenstein curve of arithmetic genus g at least two, pick P(epsilon)X, and call the sheaf of dualizing differentials (omega). For a proper closed subscheme Z of X with support P and ideal sheaf I, define the degree of Z to be dim(,(//C)) O(,P)/I(,P). Call Z 1-special if dim(,(//C))Hom(I,O(,X)) (GREATERTHEQ) 1. In a manner analogous to the classical construction, one defines the wronskian of X to be some element (alpha) of (H('0) (X,(omega)('(CRTIMES) 1/2(g('2)+g)))). One defines the Weierstrass weight W(P) to …

Go to article

Life Cycle Of Alaria Marcianae In Louisiana (Trematoda, Transmammary, Milk-Borne)., Wesley Lawrence Shoop Jan 1984

Life Cycle Of Alaria Marcianae In Louisiana (Trematoda, Transmammary, Milk-Borne)., Wesley Lawrence Shoop

LSU Historical Dissertations and Theses

The life cycle of Alaria marcianae (Trematoda) as found in Louisiana involves the planorbid snail, Helisoma trivolvis, as first intermediate host; tadpoles of Rana catesbiana, R. clamitans, R. utricularia, Hyla cinerea, and Gastrophryne carolinensis as second intermediate hosts; a wide range of amphibian, reptilian, and mammalian paratenic hosts; and the bobcat (Lynx rufus), domestic cat (Felis domesticus), and juvenile raccoon (Procyon lotor) as definitive hosts. Eggs defecated by the definitive host require an incubation period of approximately 20 days; a free swimming miracidium hatches from each egg and must penetrate a snail within 24 hr or die; the miracidium transforms …

Go to article

Effect Of Feedback On Selected Teaching Behaviors Of Agricultural Teacher Educators., Walter Stephen Woodley Jan 1984

Effect Of Feedback On Selected Teaching Behaviors Of Agricultural Teacher Educators., Walter Stephen Woodley

LSU Historical Dissertations and Theses

This study was conducted to determine the impact of student feedback upon the teaching behavior of agricultural teacher educators. An experimental pretest posttest control group design was used for the study. Ninety-seven agricultural teacher educators were surveyed and 62 (63.9%) agricultural teacher educators and their students participated on both the initial and final assessment. A modification of the Tuckman Teacher Feedback Form (TTFF) was used to measure the agricultural teacher educators' self-perceptions and their students' perceptions. The TTFF measures four dimensions of teaching behavior: creativity, dynamism, organized demeanor, and warmth and acceptance. The multivariate analysis of variance (MANOVA) and the …

Go to article

Nutrient Availability Patterns Of Various Phosphatic Sources In Pine Bark: Sand Media And Their Effect On Several Species Of Container-Grown Woody Ornamentals And Phosphorus-32 Tracing Of Uptake Of Phosphorus From Ordinary Superphosphate (0-20-0) By Gardenia Jasminoides 'Radicans' (Fertility)., Gary Lee Wade Jan 1984

Nutrient Availability Patterns Of Various Phosphatic Sources In Pine Bark: Sand Media And Their Effect On Several Species Of Container-Grown Woody Ornamentals And Phosphorus-32 Tracing Of Uptake Of Phosphorus From Ordinary Superphosphate (0-20-0) By Gardenia Jasminoides 'Radicans' (Fertility)., Gary Lee Wade

LSU Historical Dissertations and Theses

Solution-phase pH, soluble salts, NH(,4)-N+NO(,3)-N, P and K were compared over a 140-day period in 1982 for five phosphatic sources (0-18-0, 0-46-0, 29-26-0, 18-48-0, 11-55-0) incoporated at three rates in a pine bark-sand medium (4:1 v/v). Treatment effects on visual quality of five ornamental species, media-bound and leaf-tissue nutrient levels (gardenia species) and shoot dry weights (gardenia species) were also investigated. Compared to the check, media amended with each of the P sources were generally lower in pH. Solution-phase nitrogen (NH(,4)-N+NO(,3)-N) levels for the 0-18-0 or 0-46-0 sources were significantly lower than that of the other P sources and the …

Go to article

A Study Of The Texture Measurement Definition Problem (Image Analysis)., Ramon Emilio Vasquez-Espinosa Jan 1984

A Study Of The Texture Measurement Definition Problem (Image Analysis)., Ramon Emilio Vasquez-Espinosa

LSU Historical Dissertations and Theses

The problem of texture measurement definition is studied. A theory is presented in order to overcome the problem. This theory includes a conceptual framework for the general measurement definition problem. This framework is based on the concepts of a perceptual transform, a perceptual space, a measurement transform and a similarity transform. Using this conceptual framework and a particular choice for the similarity transform, a set of requirements are defined. These requirements can be used to create a formal method for defining measurements off the GLC matrices. The formal procedure is based on preserving perceptual relationships among textures. To apply this …

Go to article

Love And Rebellion: Louisiana Women Novelists, 1865-1919 (Wetmore)., Susan Millar Williams Jan 1984

Love And Rebellion: Louisiana Women Novelists, 1865-1919 (Wetmore)., Susan Millar Williams

LSU Historical Dissertations and Theses

This dissertation is a study of minor Louisiana women novelists from the end of the Civil War to the passage of women's suffrage. A large number of Louisiana women were spurred to write novels by the war and Reconstruction, motivated by both financial considerations and the need to explain their lives. They use conventional forms, like the plantation romance, but the stories they tell suggest that women were ambivalent about Southern traditions and the old order. In breaking down the social codes which both protected and repressed Louisiana women, the Civil War and the Reconstruction led Louisiana women novelists to …

Go to article

The Sunday Night Productions Without Decor At The Royal Court Theatre, 1957-1975 (England, Playwriting, Drama)., Gordon Maxwell Bolar Jan 1984

The Sunday Night Productions Without Decor At The Royal Court Theatre, 1957-1975 (England, Playwriting, Drama)., Gordon Maxwell Bolar

LSU Historical Dissertations and Theses

The Sunday night productions without decor were a series of ninety-nine fully rehearsed plays each presented with minimal scenery or costumes for one or two nights at the Royal Court Theatre, in London, from 1957-1975. This program, along with the main bill productions of the English Stage Company, staged the works of new playwrights who gave voice to the concerns and problems of the young and the working class, two groups previously ignored in the English theatre. After the success of John Osborne's Look Back in Anger (1956), the ESC, under the leadership of George Devine, was unable to accommodate …

Go to article

The Teaching Ability, Job Performance, And Attitudes Of Vocational Agricultural Teachers Who Received Their Undergraduate Degrees In Selected Land-Grant And Nonland-Grant Universities In The United States (Program Evaluation, Effectiveness)., Chigozie Cyril Asiabaka Jan 1984

The Teaching Ability, Job Performance, And Attitudes Of Vocational Agricultural Teachers Who Received Their Undergraduate Degrees In Selected Land-Grant And Nonland-Grant Universities In The United States (Program Evaluation, Effectiveness)., Chigozie Cyril Asiabaka

LSU Historical Dissertations and Theses

The study focused on the teaching ability, job performance, and attitudes of vocational agriculture teachers who received their undergraduate degrees from selected land-grant and nonland-grant universities. Objective of the Study. The purpose of this study was to compare the teaching ability, job performance, and attitudes of vocational agriculture teachers who received their undergraduate degrees from selected land-grant and nonland-grant universities during the 1981-82 school year in the United States. Methodology. A list of the vocational agriculture teachers who graduated from land-grant and nonland-grant universities in the 1981-82 school year was requested from 37 universities in ten states that have both …

Go to article

The Effects Of Psychotrophic Contamination And The Addition Of Sodium-Citrate On Major Chemical Components And Flavor Of Buttermilk., Wayne Ward Allen Jan 1984

The Effects Of Psychotrophic Contamination And The Addition Of Sodium-Citrate On Major Chemical Components And Flavor Of Buttermilk., Wayne Ward Allen

LSU Historical Dissertations and Theses

The main objective of this research was to determine what effect, if any, post-pasteurization contamination and/or sodium citrate would have on major chemical components and flavor of buttermilk. Also, it was of interest to establish chemical profiles of "good" versus "bad" buttermilk and to gain information which would aid in the prediction of buttermilk flavor. The research was divided into two parts. In "Part I" buttermilk was artificially inoculated with psychrotrophs (Pseudomonas fluorescens P27) at time of bottling. "Part II" examined the effect of psychrotrophic contamination at time of set with a lactic culture. Treatments consisted of buttermilk, both with …

Go to article

An Analysis Of Teachers Perceptions Of Current Geographic Education Programs In Libyan General Secondary Schools., El-Sghayer Abdulgader Bahammi Jan 1984

An Analysis Of Teachers Perceptions Of Current Geographic Education Programs In Libyan General Secondary Schools., El-Sghayer Abdulgader Bahammi

LSU Historical Dissertations and Theses

This study was conducted to: (1) determine secondary teachers' perceptions of the current status of geographic education programs in the Libyan general secondary schools; (2) illustrate the strengths and weaknesses of the programs by comparing the results of this research instrument with developed criteria that represent a well-designed secondary geographic program; (3) suggest general guidelines for future improvement. The study is limited to the Libyan day-time general secondary schools which are directed by the Libyan Secretariat of Education. It was conducted in summer 1983. Criteria for evaluating geographic education programs at the Libyan general secondary schools were developed after a …

Go to article

Quasi Elastic Electron Scattering In Uranium-238 (Longitudinal, Sum-Rule, Pion, Nuclear, Structure)., Charles Carroll Blatchley Jan 1984

Quasi Elastic Electron Scattering In Uranium-238 (Longitudinal, Sum-Rule, Pion, Nuclear, Structure)., Charles Carroll Blatchley

LSU Historical Dissertations and Theses

Electron scattering data from the MIT-Bates linear accelerator were used to derive longitudinal and transverse response functions (S(,L), S(,T)) for the quasi-elastic (QE) kinematic region from uranium targets. Incident energies ranged from 100 to 690 MeV at five laboratory scattering angles: 60, 90, 134.5, 140, and 160 degrees. The Rosenbluth separations using all five angles were obtained at three momentum transfers (q) from 250 to 500 meV/c. Both response functions compared well to relativistic Fermi Gas Model (FGM) predictions at higher values of q, but the S(,L) peak was progressively lower and broader than the FGM at lower q. This …

Go to article

An Analysis Of Farmers' Soil Testing Practices In Three Louisiana Parishes., Eddie Ray Funderburg Jan 1984

An Analysis Of Farmers' Soil Testing Practices In Three Louisiana Parishes., Eddie Ray Funderburg

LSU Historical Dissertations and Theses

The study examined the soil testing practices of farmers in Northeast Louisiana. The research further examined soil fertility levels in Franklin, Morehouse, and Tensas Parishes to determine whether there have been changes in soil fertility levels in these parishes between 1964-67 and 1982-83. The sample was taken from the population of farmers in Franklin, Morehouse, and Tensas Parishes who had used the Louisiana State University soil testing laboratory in 1982-83. One hundred farmers were interviewed regarding their use of soil testing. Also, all the soil fertility data was collected from soil tests in 1982-83 in Franklin, Morehouse, and Tensas Parishes, …

Go to article

An Investigation Of The Curricular Content Of Instrumental Music Education Methods Courses At Selected Colleges And Universities (Band, Orchestra, Instruments)., Paul Keith Garrison Jan 1984

An Investigation Of The Curricular Content Of Instrumental Music Education Methods Courses At Selected Colleges And Universities (Band, Orchestra, Instruments)., Paul Keith Garrison

LSU Historical Dissertations and Theses

Instrumental music education methods courses are considered essential in the training of future school band and orchestra directors. The National Association of Schools of Music, state departments of education, and colleges and university catalogs specify at least one such course be included in the undergraduate curriculum of prospective instrumental music teachers. A review of the literature pertinent to instrumental music education methods classes indicated the curricular content of these courses had not been investigated previously. Several sources implied such a study would be helpful in determining and eliminating current inadequacies of instrumental music education methods classes and in making future …

Go to article

Efficiency Tests Of Options On Treasury Bond Futures At The Chicago Board Of Trade., James Cleveland Boyd Jan 1984

Efficiency Tests Of Options On Treasury Bond Futures At The Chicago Board Of Trade., James Cleveland Boyd

LSU Historical Dissertations and Theses

This dissertation examines the weak-form market efficiency of the option on Treasury Bond futures contract at the Chicago Board of Trade (CBOT) from its inception in October, 1982, through mid-June, 1983. Arbitrage techniques which have been used in studies of stock option market efficiency including lower boundary conditions on calls and puts, put-call parity, and the box spread, were used in this study to evaluate the efficiency of the option on Treasury Bond futures market. Transaction-by-transaction data were used over the period of study to simulate ex post and ex ante arbitrage opportunities from the vantage point of the floor …

Go to article

Manipur In Transition: Differentials Of Development In A Polyethnic Area Of India., Kiran Banga Chhokar Jan 1984

Manipur In Transition: Differentials Of Development In A Polyethnic Area Of India., Kiran Banga Chhokar

LSU Historical Dissertations and Theses

The present study seeks to investigate the processes of socio-economic change that have affected the major ethnic groups in Manipur, mainly the subsistence level tribals and the Meitei peasantry; the strategies adopted by these groups, and individuals within the groups, to cope with the changed environment; and the spatial expression of these processes of change in varying patterns of development. Manipur, a polyethnic state in northeastern India, is currently the scene of hostilities among the different ethnic groups. The study tests the hypothesis that the underlying cause of these conflicts is the difference in the levels of development of the …

Go to article

Interactive Three Dimensional Computer Graphics Simulation Of The Kinematics Of The Human Thumb (Biomechanics, Functional Anatomy, Skeletal Kinematics)., William Leslie Buford Jr Jan 1984

Interactive Three Dimensional Computer Graphics Simulation Of The Kinematics Of The Human Thumb (Biomechanics, Functional Anatomy, Skeletal Kinematics)., William Leslie Buford Jr

LSU Historical Dissertations and Theses

This dissertation describes the development of a computer graphical simulation of thumb kinematics as a clinical design tool. The simulation utilizes a realistic data structure of the thumb bones, an optimized model of joint kinematics, and a variety of experimental cadaver measurements. It was developed with a concurrent processing arrangement in which graphical transformations and interactive manipulations are handled on a distributed graphics system, and musculoskeletal dynamics calculations are carried out on a minicomputer. The thumb simulation includes interactive entry of patient related data, simulation of two types of tendon transfer operations, calculation and display of resultant muscle mechanics during …

Go to article

A Comparison Of Two Developmental Models Of Concept Learning., Roberta Naomi Chinn Jan 1984

A Comparison Of Two Developmental Models Of Concept Learning., Roberta Naomi Chinn

LSU Historical Dissertations and Theses

Recent research has identified changes in the strategies used and the shape of learning curves of children learning concepts as a function of developmental level. Two recent models have been proposed to explain these changes. One model views these changes as an improvement of hypothesis-testing strategies. The other model views these changes as a switchover from reliance on one type of learning process to a second type of learning process. The present study compared the two models with respect to the strategies used and the shape of the learning curves of four grade levels of subjects. One hundred twenty-nine children …

Go to article

"They Fought Splendidly!": The Struggle For Port Hudson (Civil War, Louisiana, Military)., Lawrence Lee Hewitt Jan 1984

"They Fought Splendidly!": The Struggle For Port Hudson (Civil War, Louisiana, Military)., Lawrence Lee Hewitt

LSU Historical Dissertations and Theses

This dissertation examines the Confederate occupation of Port Hudson, Louisiana, and the Union efforts to capture the bastion during the period August 1862-July 1863. Though it recounts the garrison life of the soldiers, it emphasizes governments. Throughout the period under consideration, the Confederate government's objective in garrisoning Port Hudson and Vicksburg was to maintain the vital Red River supply-line. That waterway facilitated the east-west flow of manpower, munitions and foodstuffs between the heart of the Confederacy and the Trans-Mississippi. The United States government recognized the importance of this supply-line and made control of the Mississippi River one of its primary …

Go to article

A Comparison Of Chronic And Transient Loneliness On The Variables Of Anxiety, Depression And Self-Esteem., Jeanne Lee George Jan 1984

A Comparison Of Chronic And Transient Loneliness On The Variables Of Anxiety, Depression And Self-Esteem., Jeanne Lee George

LSU Historical Dissertations and Theses

This study sought to determine whether chronic and transient loneliness are meaningful distinctions in loneliness research and to provide data to guide future investigations. To do this, the study differentiated people who reported chronic loneliness from those who reported transient or no experience with loneliness and compared them on the characteristics of trait anxiety, self-esteem, and depression. The subjects were 281 student volunteers, ages 18 to 25, who were enrolled in undergraduate psychology classes at Louisiana State University. Subjects categorized themselves as chronically lonely, transiently lonely, or never lonely on the Personal History of Loneliness Questionnaire (PHOL). Current loneliness was …

Go to article

A Study Of The Inheritance Of Resistance To Leaf Smut Of Rice In An Undefined Diallel Cross., Haroun Kabadi Jan 1984

A Study Of The Inheritance Of Resistance To Leaf Smut Of Rice In An Undefined Diallel Cross., Haroun Kabadi

LSU Historical Dissertations and Theses

The inheritance of resistance to leaf disease of rice (Oryza sativa L.), caused by the fungus Entyloma oryzae H. & P. Sydow & Sydow, was studied in an undefined diallel set of crosses involving five rice lines previously rated for leaf smut resistance. The five lines consisted of two very resistant lines, two very susceptible lines, and one intermediate line. The diallel set of crosses consisted of the five parental lines considered to be non-random, 20 F(,1) hybrids obtained from the single crosses of the five lines in all combinations, and 20 F(,2) families derived from self-pollination of the F(,1) …

Go to article

Evaluation Of Reduced Washing And Hot Packing As Shelf-Life Extenders Of Creamed Cottage Cheese., Edward E. Oamen Jan 1984

Evaluation Of Reduced Washing And Hot Packing As Shelf-Life Extenders Of Creamed Cottage Cheese., Edward E. Oamen

LSU Historical Dissertations and Theses

Cottage cheese coagulum, formed by direct acidification of 189 liters of 12.00% reconstituted nonfat dry milk (NFDM), was cut, cooked and drained. Without washing, curd was creamed with hot dressing, held for various times to allow cream absorption, packaged, cooled and stored at 5(DEGREES)C. Dressing temperatures of 60, 71 or 82(DEGREES)C and holding times of 0, 30 or 60 min were investigated in order to determine the best combination for unwashed curd. Such parameters as yield, curd-to-cream ratio, amount of free cream, total solids, fat, microbiology, organoleptic properties and shelf-life were used to evaluate creamed unwashed cottage cheese quality. No-washing …

Go to article

Typicality And Familiarity Effects In Children's Memory: The Interaction Of Processing And The Knowledge Base., Gary Todd Rosenthal Jan 1984

Typicality And Familiarity Effects In Children's Memory: The Interaction Of Processing And The Knowledge Base., Gary Todd Rosenthal

LSU Historical Dissertations and Theses

Third- and sixth-graders and adults participated in an experiment based upon Hunt and Einstein's (1981) theory which relates study activities or processing task to subsequent memory performance. Participants performed a processing task designed to emphasize either relational or item-specific information. In addition, the information about the words available in each subject's knowledge base was measured in two ways: relational information was assessed with a typicality rating task and item-specific information was assessed with an attribute listing task. The experiment consisted of three phases. In the first phase subjects performed one of two processing tasks on a list containing typical, atypical …

Go to article

Women And Class: A Theoretical And Empirical Analysis (Stratification)., Pamela Jean Jenkins Jan 1984

Women And Class: A Theoretical And Empirical Analysis (Stratification)., Pamela Jean Jenkins

LSU Historical Dissertations and Theses

This study was an attempt to conceptually and empirically expand Marx's class analytic scheme to include the unique position of women. The goals in this study were to: (1) discuss and resolve certain issues surrounding the definition of the working class; and (2) to test an empirical measure of class that would reflect women's roles in the home and the workplace. The first goal was met basically by a theoretical model that allowed the conceptualization of women and their place in production (both in home and work) into an already existing class structure. This study concentrated on the differences in …

Go to article

The Design And Evaluation Of An Integrating Monitoring Device For Ozone Using 10,10'-Dimethyl-9,9'-Biacridylidene., Marion Rene Surgi Jan 1984

The Design And Evaluation Of An Integrating Monitoring Device For Ozone Using 10,10'-Dimethyl-9,9'-Biacridylidene., Marion Rene Surgi

LSU Historical Dissertations and Theses

A unique film badge design in which a reagent 10,10'-dimethyl-9,9'-biacridylidene (DBA) is dissolved homogeneously in a gas-permeable, silicone-polycarbonate copolymer film, was evaluated. The ambient concentration of ozone can be determined from its reaction with DBA. The disappearance of DBA upon ozonolysis can be monitored at 4300 (ANGSTROM) without extraction or desorption from the polymer membrane. Unlike other reagents for ozone determination, DBA is specific for ozone. Interferences from nitrogen dioxide and sulfur dioxide are less than 1%. Prior to this experimental work, a mathematical diffusion model was developed to predict the response of such a device to a given pollutant …

Go to article

A Content Analysis Of Reading Comprehension Instruction In Selected Social Studies Teachers' Manuals Of First, Third, And Fifth Grade., Adele Ducharme Rutland Jan 1984

A Content Analysis Of Reading Comprehension Instruction In Selected Social Studies Teachers' Manuals Of First, Third, And Fifth Grade., Adele Ducharme Rutland

LSU Historical Dissertations and Theses

This study was designed to assess reading comprehension instruction guidelines within elementary social studies teachers' manuals. The study's purpose was to analyze guidelines for teaching reading comprehension as presented in selected elementary social studies teachers' manuals. In order to assess reading comprehension instructional guidelines, a content analysis of nine teachers' manuals representing three randomly selected social studies series with 1983 copyright dates was undertaken. An assessment model was developed which consisted of three categories, SOME INSTRUCTION, NON-INSTRUCTION, and INDETERMINATE. Five components representing the definition of reading comprehension instruction formulated for this study were used to establish which category was to …

Go to article

First Prev Next Last