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Assessment Of Depression In Adolescents: Relationship Between Iq, Depression, And Adaptive Behavior., Ramasamy Manikam Jan 1992

Assessment Of Depression In Adolescents: Relationship Between Iq, Depression, And Adaptive Behavior., Ramasamy Manikam

LSU Historical Dissertations and Theses

The primary focus of this investigation was to examine differences in depression, general psychopathology, and social skills among adolescents, and to identify the role of adaptive behavior between intelligence (I.Q.) and depression. One hundred adolescents, 13 through 17 years of age participated in this study. I.Q.s ranged between 40 to 130. Five levels of I.Q.s were studied (Above normal, Average, Borderline, Mild, Moderate). Three depression measures, the Child Depression Inventory (CDI), Reynolds Adolescent Depression Scale (RADS), Bellevue Index of Depression (BID), one social skills measure Matson Evaluation of Social Skills with Youngsters (MESSY), and one general psychopathology measure Psychopathology Instrument …

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Bifad Title Xii Coordinators' Perceptions Regarding Sustainable Agriculture., Lydia Vidjiawatie Ori Jan 1992

Bifad Title Xii Coordinators' Perceptions Regarding Sustainable Agriculture., Lydia Vidjiawatie Ori

LSU Historical Dissertations and Theses

The purpose of this study was to determine perceptions of coordinators with the Board of International Food and Agricultural Development (BIFAD) of sustainable agriculture, and practices and the ideas needed to promote it. The study also sought to verify Crosson's model of agricultural productivity and land potential. A three-part, field tested questionnaire was mailed to all 157 Title XII coordinators at Land Grant Universities throughout the United States. Of the 103 returned questionnaires a 58.6% usable response rate was obtained. An additional 21 responses obtained from nonrespondents reached by phone showed no significant differences from mail respondents. Descriptive statistics, Cramer's …

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Attention Deficit-Hyperactivity Disorder Among Mentally Retarded Children., Virginia Elaine Fee Jan 1992

Attention Deficit-Hyperactivity Disorder Among Mentally Retarded Children., Virginia Elaine Fee

LSU Historical Dissertations and Theses

Teachers completed the CTRS-39 on 100 boys assigned to one of four groups based on IQ and scores on a DSM-III-R checklist of the symptoms for Attention Deficit-Hyperactivity Disorder (AD-HD). The groups included a normal control group, children with AD-HD, mentally retarded children, and mentally retarded children with AD-HD. There were no significant differences between the AD-HD group and the mentally retarded AD-HD group on all but one of the Conners' Factors and no significant differences on the IOWA Conners' Scales that were extracted from the CTRS-39. Mentally retarded children in general were found to be more anxious than their …

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Investigations Into The Pathogenesis Of Acute Equine Laminitis., Linda Elizabeth Cummings Jan 1992

Investigations Into The Pathogenesis Of Acute Equine Laminitis., Linda Elizabeth Cummings

LSU Historical Dissertations and Theses

A profound decrease in perfusion of the laminar capillaries has been documented during acute equine laminitis, resulting in ischemia of the laminar tissue. Oxygen radicals are believed to mediate ischemia/reperfusion injury. The effects of (1) three hours of surgical ligation of the major blood supply of the equine digit followed by ligature release, (2) resection of the medial and lateral palmar digital arteries, and (3) digital intraarterial infusions of an oxygen radical generating system, were investigated. Laminitis was not induced by any of these manipulations. Clinical signs and alterations in hemograms observed following these procedures are reported. Preliminary identification of …

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Cell-Mediated Immune Response To Equine Infectious Anemia Virus., Deborah Franklin Lea Jan 1992

Cell-Mediated Immune Response To Equine Infectious Anemia Virus., Deborah Franklin Lea

LSU Historical Dissertations and Theses

The lentivirus Equine Infectious Anemia Virus (EIAV) causes an acute infection in horses which is characterized by fever, viremia, thrombocytopenia, edema, and hemolytic anemia. Most horses survive the acute disease, but remain persistently infected for life. The exact mechanism whereby horses' control their initial infection is unknown, though it appears likely that cellular immune mechanisms are involved. T lymphocytes have been shown to play a major role in the recovery from a variety of viral infections, though their role in EIAV infection has not been established. We tested peripheral blood mononuclear cells (PBMC) from EIAV-infected ponies for evidence of a …

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Effects Of Stress, Dietary Restraint, And Disinhibition Upon Eating Habits And Nutrition., Barbara Ann Cubic Jan 1992

Effects Of Stress, Dietary Restraint, And Disinhibition Upon Eating Habits And Nutrition., Barbara Ann Cubic

LSU Historical Dissertations and Theses

Restraint theory states that for some individuals physiological factors which normally result in eating compete with cognitive efforts to resist eating (i.e. dietary restraint). This disparity has been hypothesized to result in a chronic state of stress which leads to reduced behavioral control and increased negative affect. It has been presumed that dietary restraint is a precondition for overeating. Despite the legitimacy of proposing a link between stress, dietary restraint and overeating this interaction has not received intensive study. Furthermore, studies which have attempted to assess this relationship have not investigated the possible independent and interactive influences each of these …

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The Effects Of Exercise Stress On Equine Immune Function., Tammie Lee Keadle Jan 1992

The Effects Of Exercise Stress On Equine Immune Function., Tammie Lee Keadle

LSU Historical Dissertations and Theses

The physiologic demands of exercise constitute a form of stress which is accompanied by modulation of immune responses. However, numerous studies in many different model systems have failed to clearly define the effects of exercise on immunity. Furthermore, the role of the neuroendocrine system in exercise-induced immunomodulation has been largely unexplored. To address these issues, we evaluated the effect of acute exercise stress on 3 indices of immune function in horses, before and after completion of a 12 week treadmill-based physical conditioning program. In addition, we determined the effects of corticosteroids, catecholamines, beta endorphin, and adrenocorticotropic hormone on these same …

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Demonstration Of A Control Strategy For Sustained Algal Growth At A Full-Scale Level Under Computer-Automated, Continuous Culture Conditions., Kelly Ann Rusch Jan 1992

Demonstration Of A Control Strategy For Sustained Algal Growth At A Full-Scale Level Under Computer-Automated, Continuous Culture Conditions., Kelly Ann Rusch

LSU Historical Dissertations and Theses

A computerized algal turbidostat was designed and constructed for use in aquaculture facilities requiring a continuous feed source. Continuous cultures, maintained in the exponential growth phase by the continual introduction of fresh media, exhibit a steadystate nature easily adaptable to computer automation and optimization processes. These characteristics, in contrast to batch culture methods, result in both reduced land and labor requirements; an important consideration for commercial applications wherein algal production occupies as much as 40 percent of a facility in both space and cost. The turbidostat system consisted of two 0.6 m$\sp3$ growth chambers supported by a central monitoring block …

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"Mademoiselle De Maupin": A Close Reading And Study Of The Process Of Subjectivity In Theophile Gautier's Early Nineteenth Century Novel., Rebecca Lucille Tebeau Jan 1992

"Mademoiselle De Maupin": A Close Reading And Study Of The Process Of Subjectivity In Theophile Gautier's Early Nineteenth Century Novel., Rebecca Lucille Tebeau

LSU Historical Dissertations and Theses

This dissertation proposes a close reading of Theophile Gautiers's Mademoiselle de Maupin. The purpose of this reading is to explore subjectivity by first assuming that it is a process, enacted by the protagonist's explorations of their own identities, but not an object contained in their elaborations. This view of subjectivity implies both the representational strategies of the protagonists, as well as the narrative strategies of the text. Since Mademoiselle de Maupin's narrative structure is so inconsistent and self-conscious, the explorations of self within the text draw attention to both the fiction of identity and the "identity" of fiction as a …

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Bibl. Nat. Ms. Fr. 379: A Study In Word And Image. (Volumes I And Ii)., Adelaide Stuart Frazier Jan 1992

Bibl. Nat. Ms. Fr. 379: A Study In Word And Image. (Volumes I And Ii)., Adelaide Stuart Frazier

LSU Historical Dissertations and Theses

The Bibl. Nat. ms. fr. 379 offers a religious, social, literary and artistic comment on the implications of the early sixteenth century world. The cult of the Virgin is considered as it supported and directed the poetry contests or puy at Rouen and Dieppe in their particular emphases on the Immaculate Conception and the Assumption of the Virgin, both ideas more dogmatic than scriptural. The conduct of the puy controlled the literary and artistic expressions on the subject. A detailed discussion submits the evidence that the poets reflected the secular world in their poems and the artists' illustrations often rejected …

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Metaphor Within/Without Metaphysics: Nietzsche, Heidegger, And Derrida., Jonggab Kim Jan 1992

Metaphor Within/Without Metaphysics: Nietzsche, Heidegger, And Derrida., Jonggab Kim

LSU Historical Dissertations and Theses

The contemporary preoccupation with metaphor lies in its capability of deconstructing and disempowering metaphysics, and of creating a logic of uncertainty or a Derridian logic of supplements in opposition to the logic of identity and of non-contradiction. As a figure of speech saying one thing but meaning something else, metaphor contains in itself a certain alterity and otherness which resists a logical identity as well as a systematic philosophy. In my study of metaphor in the texts of Nietzsche, Heidegger, and Derrida, I inquire into the problematic relation or difference between philosophy and metaphor, focusing on how the former is …

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Edwardsiella Ictaluri: Pathogenic Mechanisms And Antigens Recognized By Infected Channel Catfish., Thomas James Baldwin Jan 1992

Edwardsiella Ictaluri: Pathogenic Mechanisms And Antigens Recognized By Infected Channel Catfish., Thomas James Baldwin

LSU Historical Dissertations and Theses

To clarify early events in the pathogenesis of enteric septicemia of catfish, 140 channel catfish fingerlings (Ictalurus punctatus) were each infected with approximately 1.0 $\times$ 10$\sp9$ colony forming units Edwardsiella ictaluri (E. ictaluri) by intragastric intubation. Fish were sacrificed at 0, 0.25, 0.5, 1, 3, 6, 12, 24, 48, 72, 96, and 120 hours post infection (PI). Multiple tissue samples were evaluated by gross observation, light and electron microscopy, and immunohistochemical methods. In addition, stomach, intestine, trunk kidney, and liver were cultured quantitatively for bacteria. Trunk kidney cultures were positive by 0.25 hours PI, indicating rapid transmucosal passage. Histologic lesions …

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Molecular Phylogenies And Biogeography Of Central American Birds., Shannon J. Hackett Jan 1992

Molecular Phylogenies And Biogeography Of Central American Birds., Shannon J. Hackett

LSU Historical Dissertations and Theses

This dissertation presents data on the biogeography and molecular systematics of seven independent lineages of birds; both allozyme and mitochondrial DNA (mtDNA) characters were used. The purpose of this study was to discover biogeographic patterns among endemic taxa distributed in the highlands and lowlands of southern Central America and sister taxa in either North or South America. Analyses of the genera Diglossa, Buarremon, Pselliophorus, and Pezopetes suggested a complex biogeographic pattern in the highlands of southern Central America; divergence of some highland lineages occurred relatively recently (during the Pleistocene), after the landbridge connection between Central and South America was completed, …

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The Hemagglutinin/Esterase Gene Of Human Coronavirus Strain Oc43: Phylogenetic Relationships To Bovine And Murine Coronaviruses And Influenza C Virus, Xuming Zhang, Konstantin G. Kousoulas, Johannes Storz Jan 1992

The Hemagglutinin/Esterase Gene Of Human Coronavirus Strain Oc43: Phylogenetic Relationships To Bovine And Murine Coronaviruses And Influenza C Virus, Xuming Zhang, Konstantin G. Kousoulas, Johannes Storz

Faculty Publications

The complete nucleotide sequences of the hemagglutinin/esterase (HE) genes of human coronavirus (HCV) strain OC43 and bovine respiratory coronavirus (BRCV) strain G95 were determined from single-stranded cDNA fragments generated by reverse transcription of virus-specific mRNAs and amplified by polymerase chain reaction. An open reading frame of 1272 nucleotides was identified as the putative HE gene by homology to the bovine coronavirus HE gene. This open reading frame encodes a protein of 424 amino acids with an estimated molecular weight of 47.7 kDa. Ten potential N-linked glycosylation sites were predicted in the HE protein of HCV-OC43 while nine of them were …

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Two-Step Polymerase Chain Reactions And Restriction Endonuclease Analyses Detect And Differentiate Ompa Dna Of Chlamydia Spp., B. Kaltenboeck, K. G. Kousoulas, J. Storz Jan 1992

Two-Step Polymerase Chain Reactions And Restriction Endonuclease Analyses Detect And Differentiate Ompa Dna Of Chlamydia Spp., B. Kaltenboeck, K. G. Kousoulas, J. Storz

Faculty Publications

Specific and sensitive amplification of major outer membrane protein (MOMP) gene (ompA) DNA sequences of Chlamydia species with various MOMP genotypes was achieved by a two-step polymerase chain reaction (PCR). Degenerate, inosine-containing oligonucleotide primers homologous to the 5' and 3' ends of the translated regions of all chlamydial MOMP genes were used in a PCR to amplify a DNA fragment of approximately 1,120 bp. A portion of this DNA fragment was amplified in a second genus-specific reaction that yielded a DNA fragment of approximately 930 bp. A pair of degenerate oligonucleotide primers homologous to internal sequences of the primary DNA …

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Viable Embryos And Normal Calves After Nuclear Transfer Into Hoechst Stained Enucleated Demi-Oocytes Of Cows, M. E. Westhusin, M. J. Levanduski, R. Scarborough, C. R. Looney, K. R. Bondioli Jan 1992

Viable Embryos And Normal Calves After Nuclear Transfer Into Hoechst Stained Enucleated Demi-Oocytes Of Cows, M. E. Westhusin, M. J. Levanduski, R. Scarborough, C. R. Looney, K. R. Bondioli

Faculty Publications

Bovine oocytes were bisected, stained with Hoechst 33342 and observed under a fluorescent microscope to identify nucleated and enucleated demi-oocytes. Other oocytes were bisected but not stained, or bisected and only half of each oocyte stained, and viewed under a fluorescent microscope. The oocytes were then used for nuclear transfer by fusing them with embryonic blastomeres from a 5-6 day bovine embryo. The fusion rate and proportion developing into compact morulae or blastocysts was compared among different types of demi-oocytes. Expt 1 examined the effect of staining and indicated no effect on either fusion rate or embryonic development whether or …

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Involvement Of Interleukin 2 Receptors In Conceptus-Derived Suppression Of T And B Cell Proliferation In Horses, T. L. Roth, K. L. White, D. L. Thompson, S. Rahmanian, D. W. Horohov Jan 1992

Involvement Of Interleukin 2 Receptors In Conceptus-Derived Suppression Of T And B Cell Proliferation In Horses, T. L. Roth, K. L. White, D. L. Thompson, S. Rahmanian, D. W. Horohov

Faculty Publications

The mechanism by which a horse conceptus-derived immunosuppressive factor (HCS) of M(r) >100 000 inhibits lymphocyte proliferation was investigated. The factor was obtained from the culture supernatants of 20-day-old horse conceptuses; activity, identified by reduced uptake of [3H]thymidine by mitogen-stimulated lymphocytes, was greatest (P0.05). Data from a fluorescence-activated cell sorter indicated that supplementation with HCS reduced the number of T cells in phytohaemagglutinin-stimulated cultures and suppressed proliferation of T and B cells in pokeweed-mitogen-stimulated cultures compared with controls. Cell proliferation was greater (P0.05) from that of control cells. The addition of stimulated equine lymphocyte supernatant to cultures supplemented with HCS …

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Coculture Of In Vitro Fertilized Bovine Embryos With Oviductal Epithelial Cells Originating From Different Stages Of The Estrous Cycle, J. K. Thibodeaux, Y. Menezo, J. D. Roussel, W. Hansel, L. L. Goodeaux, D. L. Thompson, R. A. Godke Jan 1992

Coculture Of In Vitro Fertilized Bovine Embryos With Oviductal Epithelial Cells Originating From Different Stages Of The Estrous Cycle, J. K. Thibodeaux, Y. Menezo, J. D. Roussel, W. Hansel, L. L. Goodeaux, D. L. Thompson, R. A. Godke

Faculty Publications

bovine embryos derived from in vitro fertilization procedures were cocultured in vitro with oviductal cells obtained from heifers between d 4 and 6 or d 14 and 16 of the estrous cycle. In addition, proteins secreted by oviductal cells isolated between d 4 and 6 or d 14 and 16 of the cycle were monitored. Embryos (2- to 4-cell) were incubated in Tissue Culture Medium-199 with 10% fetal bovine serum with or without oviductal cells at 39°C for 10 d following in vitro insemination. There were more morulae, blastocysts, and hatched blastocysts following coculture with oviductal cells than with culture …

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Lsu General Catalog 1992-1993, Louisiana State University And Agricultural And Mechanical College Jan 1992

Lsu General Catalog 1992-1993, Louisiana State University And Agricultural And Mechanical College

LSU General Catalog

The LSU General Catalog describes all undergraduate and graduate departments and programs with degree requirements and courses offered for each one. The General Catalog includes information on registration and financial aid as well as academic services offered to all students.

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The Molecular Systematics Of Unitunicate, Perithecial Ascomycetes., Joseph William Spatafora Jan 1992

The Molecular Systematics Of Unitunicate, Perithecial Ascomycetes., Joseph William Spatafora

LSU Historical Dissertations and Theses

Maximum parsimony analysis of partial sequences from the small subunit ribosomal DNA (ssrDNA) rejects the monophyly of unitunicate, perithecial ascomycetes (pyrenomycetes). The genera Kathistes, Pyxidiophora and Subbaromyces are separated from a large clade of relatively derived pyrenomycetes. This derived pyrenomycete clade is supported by a bootstrap confidence level of 100% and a decay index of $>$10 steps, and contains two subclades, A and B. Subclade A comprises the orders Clavicipitales, Hypocreales, Microascales and the genus Ceratocystis; subclade B consists of the Diaporthales, Sordariales, Xylariales and the genus Ophiostoma. The Clavicipitales is a sister taxon to the Hypocreales, which consists …

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The Effects Of Dietary Sodium Zeolite A On Growth And Mineral Utilization Of Chickens., Kevin Lee Watkins Jan 1992

The Effects Of Dietary Sodium Zeolite A On Growth And Mineral Utilization Of Chickens., Kevin Lee Watkins

LSU Historical Dissertations and Theses

Four experiments were conducted to investigate the effects of sodium zeolite A (SZA) on calcium (Ca), phosphorus (P), and zinc (Zn) utilization in broiler chickens from 5 to 14 or 15 days of age. In Experiment 1, two levels each of SZA (0 and.75%) and (or) Ca (1.0 and 1.5%) were fed to both uninfected and Eimeria acervulina-infected chicks. Excess dietary Ca reduced (P $$.10) in infected chicks (Ca x coccidiosis, P $<$.05). Addition of SZA to diets with excess Ca further decreased (P $<$.05) gain and tibia ash. These results suggest that SZA may exacerbate the adverse effects of excess dietary Ca. In Experiment 2, four levels of dietary Ca (.6,.8, 1.0, and 1.2%) and (or) two levels of SZA (0 and.75%) were fed. Sodium zeolite A decreased (P $<$.05) plasma P and tibia magnesium (Mg) but increased (P $<$.05) tibia Ca, Zn, aluminum (Al), and manganese (Mn). Tibia ash and shearing force were increased in chicks fed SZA and inadequate dietary Ca, but were decreased in chicks fed SZA and 1.2% Ca (Ca x SZA, P $<$.05). Dietary SZA enhanced tibia ash, density, and shearing force when dietary Ca was low; however, SZA reduced many bone mineralization indices in chicks fed excess Ca. In Experiment 3, various levels of dietary P (.41,.55, and.69%), Ca (.6 and 1%), and (or) SZA (0 and.75%) were fed. The addition of Ca, SZA, or both exacerbated the adverse effects of feeding low-P diets, yet alleviated the adverse effects of feeding low-Ca, high-P diets. Dietary SZA reduced (P $<$.01) plasma P and increased (P $<$.02) tibia Mn, Zn, copper (Cu), and Al. The SZA-induced increase in tibia Al was most evident in chicks fed low levels of P (SZA x P, P $<$.02). These data demonstrate that the effects of SZA are influenced by dietary concentrations of Ca and P, and that the addition of SZA to diets low in P results in bone Al accumulation. In Experiment 4, the effects of SZA on chicks fed inadequate (35 ppm), marginal (40 ppm), adequate (85 ppm), and excess (4,000 ppm) levels of Zn were assessed. Sodium zeolite A increased (P $<$.05) tibia and pancreas Zn regardless of dietary Zn concentration. Dietary SZA tended to alleviate the adverse effects of feeding inadequate Zn and exacerbate the adverse effects of feeding excess Zn.

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The Role Of Bovine Herpesvirus-1 Glycoprotein Iii In Molecular Pathogenesis And Immunomodulation., Katherine Marie Byrne Jan 1992

The Role Of Bovine Herpesvirus-1 Glycoprotein Iii In Molecular Pathogenesis And Immunomodulation., Katherine Marie Byrne

LSU Historical Dissertations and Theses

Bovine herpesvirus-1 (BHV-1) is the pathogenic agent for infectious bovine rhinotracheitis. Current vaccines to protect against infection have serious disadvantages to producers and have been implicated in epizootic outbreaks. The virus has also been shown to cause suppression of the immune system. BHV-1 vaccines could be improved by identifying and genetically deleting those aspects of the virus responsible for immunosuppression and providing a marker within the genome which would distinguish the vaccine strain from wild types in the case of disease outbreaks. This study examined the role of gIII in viral infection and immunosuppression. This was accomplished by expressing full …

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Reasoning Using Biological Content: Relationships Among Evidence, Theory, And Interpretation., Catherine Lee Cummins Jan 1992

Reasoning Using Biological Content: Relationships Among Evidence, Theory, And Interpretation., Catherine Lee Cummins

LSU Historical Dissertations and Theses

Theoretical sampling was used to select 30 high school biology and college zoology students who examined a simulation involving island biogeography. The literature base for the study was scientific reasoning, problem solving, and prescientific conceptions. The research questions were answered using qualitative and quantitative methods. The first research question was: What number and what type of variables would be used to evaluate biological data? The students used 19 categories of variables, and the most frequently used were size, distance, and food. The second research question was: Will students use the controlling variables strategy in this reasoning task? Only four students …

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The Development, Validation, And Application Of A Two-Tier Diagnostic Instrument To Detect Misconceptions In The Areas Of Force, Heat, Light And Electricity., Bobby Jo Franklin Jan 1992

The Development, Validation, And Application Of A Two-Tier Diagnostic Instrument To Detect Misconceptions In The Areas Of Force, Heat, Light And Electricity., Bobby Jo Franklin

LSU Historical Dissertations and Theses

The purpose of this study was to investigate the concepts prevalent among students in specific physical science related classes and to identify what classroom teachers would do when confronted with this knowledge. A 40 item instrument, Misconception Identification in Science Questionnaire (MISQ), was developed to identify certain concepts in the areas of force, heat, light, and electricity and administered to 509 students. Interviews were conducted with a stratified sampling of 27 students to validate the instrument. Six teachers were observed and interviewed to determine teacher opinion relative to test usefulness, diagnostic testing in general and other instructional factors. Quantitative and …

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Effects Of Heat And Iron Fractions On Lipid Oxidation In Meat., Dongmei Han Jan 1992

Effects Of Heat And Iron Fractions On Lipid Oxidation In Meat., Dongmei Han

LSU Historical Dissertations and Theses

Size exclusion (SE) and hydrophobic interaction (HIC) high performance liquid chromatography (HPLC) methods were developed for determining hemoglobin, myoglobin, and total pigments in beef and chicken. Hemoglobin and myoglobin in beef, but not in chicken, were separated by HIC with minimum detectable levels of 0.187 and 0.085 $\mu$g/$\mu$l, respectively. Determination of total pigment by SE-HPLC (minimum detection of 0.001 $\mu$g/$\mu$l) was more sensitive than with spectrophotometric assay. The effects of heat at 55$\sp\circ$C, 70$\sp\circ$C, 85$\sp\circ$C, and 100$\sp\circ$C on the distribution of iron in six fractions (water-soluble, water-insoluble, diffusate, hematin, total heme, and ferritin) in beef and chicken muscles were determined. …

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Chemical And Immunological Properties Of Polysaccharide Extracted From Vibrio Parahaemolyticus., Mina Jassemzadeh Izadjoo Jan 1992

Chemical And Immunological Properties Of Polysaccharide Extracted From Vibrio Parahaemolyticus., Mina Jassemzadeh Izadjoo

LSU Historical Dissertations and Theses

The capsular polysaccharide (CPS) of Vibrio parahaemolyticus was extracted from agar grown cells and purified by ethanol precipitation, hi-speed centrifugation and chromatography on Sepharose CL-4B and Detoxi columns. The CPS was found to be acidic when chromatographed on DEAE cellulose. The three constituting sugars were determined by gas-liquid chromatography to be glucose, galactose and fucose. The molecular weight of CPS is one million or greater and in its pure form appeared to be non-immunogenic for rabbits. A monoclonal antibody (Mab) reactive by ELISA to CPS was generated. The Mab agglutinated whole cell suspensions in the slide test. Latex beads armed …

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Genetic And Systematic Study Of Viviparus Georgianus (Lea), A Freshwater Snail Species Complex., Masaya Katoh Jan 1992

Genetic And Systematic Study Of Viviparus Georgianus (Lea), A Freshwater Snail Species Complex., Masaya Katoh

LSU Historical Dissertations and Theses

Genetic and morphological variation were studied in a brooding (ovoviviparous) and morphologically variable freshwater snail (Viviparus georgianus (Lea)) in the southeastern United States. Eleven populations were clustered into three genetically isolated, allopatric species characterized by 7 to 15 diagnostic loci out of the 38 loci examined. These allopatric species were an eastern species (in eastern and southern Florida), a western species (in the Florida panhandle), and a central species in the Ochlockonee River. Nei's standard genetic distances between species were large (0.23-0.52) compared to within-species distances (0.00-0.06). Moreover, genetic distances between the Ochlockonee River species and other species were larger …

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Host Quality Of Baldcypress And Its Influence On Fruittree Leafroller, Archips Argyrospila (Walker) (Lepidoptera: Tortricidae), Performance In Forested Wetlands Of Louisiana., James R. Meeker Jan 1992

Host Quality Of Baldcypress And Its Influence On Fruittree Leafroller, Archips Argyrospila (Walker) (Lepidoptera: Tortricidae), Performance In Forested Wetlands Of Louisiana., James R. Meeker

LSU Historical Dissertations and Theses

Ecological relationships between the fruittree leafroller (FTLR), (Archips argyrospila (Walker)) and a new host, baldcypress (Taxodium distichum (L.)), were investigated in southern Louisiana where persistent annual defoliation over increasingly larger areas has occurred since 1983. Defoliation was observed to correspond with common types of baldcypress foliage morphology; designated as open and appressed. Pondcypress, Shumard oak and citrus foliage also were examined. The objectives were to: (1) determine the relative suitability/susceptibility of foliage types, and (2) quantify parameters of foliage quality possibly influencing FTLR performance. Levels of defoliation, egg mass counts, and laboratory bioassays of: initial survival, host preference, growth, feeding, …

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Structural, Immunological, And Functional Characterization Of Simian Immunodeficiency Virus Proteins., Mark Anton Miller Jan 1992

Structural, Immunological, And Functional Characterization Of Simian Immunodeficiency Virus Proteins., Mark Anton Miller

LSU Historical Dissertations and Theses

Biochemical, immunological, and structural characterizations of the structural proteins of simian immunodeficiency virus (SIV) were performed. Various electrophoretic and chromatographic analyses of native and metabolically radiolabeled virus preparations coupled with immunological procedures such as Western blotting and radioimmunoprecipitation were utilized to identify SIV/DeltaB670-encoded polypeptides. Two-dimensional tryptic peptide mapping of each putative viral protein was employed to confirm that each of these components were unique and not cleavage products of precursor polyproteins. Site-directed serological studies using synthetic peptides analogous to regions of the SU and TM protein predicted to have high antigenic potential were performed. These studies resulted in the identification …

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A Comparison Of Language And Graphic Products Of Students From Kindergarten Classrooms Differing In Developmental Appropriateness Of Instruction., Jean Germany Mosley Jan 1992

A Comparison Of Language And Graphic Products Of Students From Kindergarten Classrooms Differing In Developmental Appropriateness Of Instruction., Jean Germany Mosley

LSU Historical Dissertations and Theses

This study examines the ways in which kindergartners from more and less developmentally appropriate classrooms negotiate the process of graphic communication. Both quantitative and qualitative aspects of this process are examined. Eighty-one kindergarten children from four classrooms were asked to tell a story both verbally and graphically. They were encouraged to include drawing, writing, or both on their paper. Then they were asked to tell the story that they had produced graphically. The children were students in one of four classrooms from a single school system that were identified as: (a) most developmentally appropriate beliefs and practices; (b) developmentally appropriate …

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