Digital Commons Network^™

Studying The Importance Of Hurricanes To The Northern Gulf Of Mexico Coast, Gregory W. Stone, Ping Wang, David A. Pepper, John M. Grymes, Harry H. Roberts, Xiongping Zhang, S. A. Hsu, Oscar K. Huh

Faculty Publications

No abstract provided.

Path Analysis Of Psychosocial Models Of Binge Eating In Obesity., Leslie Garl Womble

LSU Historical Dissertations and Theses

The purpose of this study was to test a cross-sectional psychosocial etiological model of binge eating in obesity using path analysis. Depression, dietary restraint, self-esteem, weight cycling, history of teasing, body dissatisfaction, concern for physical appearance, negative perception of physical appearance, media exposure, and social pressure to maintain a thin ideal were 'state' social learning constructs that were tested as correlates of binge eating. Personality variables such as neuroticism, extraversion, agreeableness, and conscientiousness were stable 'trait' variables that were tested as correlates. The study sample was 808 adults, including 444 women with a mean age of 33.35 (SD = 13.60) …

Characterization Of A Simian Hemorrhagic Fever Virus Large Envelope Glycoprotein Gene And Its Product., Xiaochun Wang

LSU Historical Dissertations and Theses

The goal of this project was to determine the genome organization, replication strategy and identification of the large envelope glycoprotein (GL) gene of simian hemorrhagic fever virus (SHFV). This virus is the fourth member of the new virus family Arteriviridae. The 3' end of the RNA genome from the prototype isolate of SHFV was cloned and sequenced. This 6,314 nucleotide (nt) sequence consisted of nine complete overlapping open reading frame (ORFs 2, 2a, 3, 4, 5, 6, 7, 8, and 9). At the 5' end of this sequence is a partial ORF, ORF 1b, and the 3' end is a …

Expecting Women: Constructing The Pregnant Woman In Twentieth Century United States And British Dramatic Representation., Amelia Lynn Cuomo

LSU Historical Dissertations and Theses

Pregnancy and issues surrounding pregnancy such as paternity and legitimacy have been presented in Western Drama since its inception. Pregnancy in the modern era, however, has become a complex issue. Abortion, birth control, and the advent of new reproductive technologies (such as in vitro fertilization) alter understandings of reproduction. This study explores twentieth century British and U.S. dramatic representations of the pregnant woman and analyzes how pregnant women are constructed in drama. The dissertation is divided into five chapters. Chapter One explores four plays by male playwrights: Harley Granville Barker's Waste, Eugene O'Neill's "Abortion," and Sidney Kingsley's Men in White …

Analysis Of Self -Directed Learning In Secondary Business Educators., James Ernest Bartlett Ii

LSU Historical Dissertations and Theses

This study (1) described secondary business educators on demographic variables; (2) described the self-directed learning level of business educators according to the OCLI and Bartlett-Kotrlik Inventory of Self-Learning; (3) determined if relationships existed between learning levels and selected variables; (4) developed a graphic model to explain the relationships of self-directed learning level; (5) determined if demographic variables can be used to explain variance in self-directed learning level; (6) determined if demographic variables can be used to explain variance in self-directed learning level; and (7) determined if the perceived importance of learning resources can be used to explain variance in self-directed …

Evaluation And Heritability Of Resistance To Sugarcane Red Rot And The Effects Of Environmental Stress On Disease Severity., Zhi Yin

LSU Historical Dissertations and Theses

Heritability of resistance to red rot, caused by Colletotrichum falcatum, was studied using progeny from 40 crosses among 24 parental clones of sugarcane. Significant differences in susceptibility were detected, although high levels of resistance were rare in the breeding and selection populations of the Louisiana sugarcane cultivar development program. Narrow-sense heritability estimates determined by mid-parent-offspring regression for four different disease traits ranged from 0.19 +/- 0.04 to 0.31 +/- 0.05. Potential genetic gain by selection for resistance, using a 10% selection intensity, ranged from 14 to 37% of the mean. The rot index provided the highest heritability estimate and the …

Helium And Heavy Ion Measurements With The Crres Satellite., Edmund Gary Clayton

LSU Historical Dissertations and Theses

The CRRES satellite was in service from July 1990 to October 1991, during a period of high solar modulation and solar activity. The ONR-604 experiment aboard CRRES measured helium with isotopic resolution in the energy range 38--110 MeV/nucleon, and heavy ions through iron at 200--500 MeV/nucleon. Although solar modulation was high throughout the CRRES mission, the mission included periods of solar quiescence as well as a number of large solar flares and associated solar energetic particle events. Measurements were made of helium and heavy ions during both the quiet times and the flare periods. A study was made to search …

Perceptions Of Louisiana High School Students Toward Selected University Types: Predominately White Institutions And Historically Black Institutions Of Higher Education., Dennis Wayne Dillon

LSU Historical Dissertations and Theses

This study examines the perceptions of 11th grade African American and Caucasian American students attending public Louisiana high schools. The students' perceptions are explored in relation to Historically Black Colleges and Universities (HBCU's) and Predominately White Institutions (PWI's). Based on a review of current literature, four common areas emerged. The areas of consideration were perception of academic quality, peer relationships, socio-cultural fit, and faculty/student relationships. The sample of students included 177 students enrolled in the Louisiana public school system in parishes where there were "pairings" of universities (HBCU and PWI). The four parishes where such pairings occurred were Caddo Parish, …

Political Liberalization In Post -Communist Central Asia: A Comparative Study., Muhammad Islam

LSU Historical Dissertations and Theses

This dissertation seeks to explain variation in political liberalization among three post-communist Central Asian countries: Kazakhstan, Kyrgyzstan, and Uzbekistan. These countries share several common political outcomes such as the dominance of the executive and a high degree of statism. Yet they also witnessed significant variation in political liberalization within a short period of time after their independence in 1991. The fact that these countries share several common political, socioeconomic, cultural, and historical features makes the rise of this political variance more intriguing than the rise of the above, however, salient, common political outcomes among them within few years of their …

Determination Of Consolidation Characteristics In Fine Soils Evaluated By Piezocone Tests., Beyongseock Lim

LSU Historical Dissertations and Theses

There has been an increasing trend to use the piezocone penetration test (PCPT) as an in situ tool of choice for determining the consolidation and flow characteristics of cohesive soils. The focus of this research is to study various factors that would affect the determination of consolidation characteristics in fine soils evaluated by piezocone tests. Immediate changes in excess pore pressure and tip resistance after penetration arrest for dissipation were experimentally identified. Undrained shear strength, influence of stress history, and lateral stress coefficient effects on the penetration pore pressure were investigated. By using a two-stage slurry consolidation technique, cohesive soil …

Parental Alcoholism And Children's Social Skills., Marsha Dean Norton

LSU Historical Dissertations and Theses

This study focused on the daily interactions and home environments of 14 families with alcoholic fathers who were beginning primary treatment for their alcoholism. Data were collected by in-depth, face to face interviews with all family members. Social skills questionnaires administered to each child. Two specific family patterns were found to be associated with higher level social skills in children. First, father's frequent presence in the home, coupled with positive family interaction, was associated with children's high range social skills. Even in circumstances where violence existed, if the father was routinely at home and participated in positive family interactions, social …

Chicken Pax Atomica: The Impact Of Nuclear Weapons On Conflict Between Interstate Dyads., James Franklin Pasley

LSU Historical Dissertations and Theses

Nuclear weapons, long considered the bete noire of human existence are examined quantitatively and qualitatively in this dissertation to ascertain if the heinous effects they threaten ultimately serve to promote deterrence between pairs of states. The findings suggest that nuclear weapons do have a significant impact on conflict when present on both sides of a dyadic dispute. In such symmetrical nuclear pairs conflict levels are quantitatively shown to be reduced, suggesting that the conflict inhibiting qualities of these weapons long espoused by nuclear optimists are legitimate. Further evidence is presented in the form of a qualitative analysis of conflict between …

Reduction Of Endogenous Bacteria Associated With Catfish (Ictalurus Punctatus) Fillets Using The Grovac Process., Milton Ruben Ramos

LSU Historical Dissertations and Theses

Fresh catfish (Ictalurus punctatus) fillets (CF) can serve as vehicles for spoilage and pathogenic bacteria. Concern for the microbiological safety of chilled CF has grown lately because psychrotrophic pathogens can survive and grow at refrigeration temperatures. The Grovac method, a new, patented (U.S. 5,543,163) process is being used in an attempt to reduce the growth of pathogens and spoilage microorganisms in CF. This process involves the using of a process solution of ascorbic acid (AA) and sodium chloride (NaCl), vacuum and tumbling. Specific objectives of this study included the isolation and identification of endogenous microflora associated with fresh whole catfish …

Computational Approach For Determination Of The Hydraulic Conductivity Of Soils Using Continuous Intrusion Piezocone Penetration Test., Chung Rak Song

LSU Historical Dissertations and Theses

In order to obtain the hydraulic conductivity or the coefficient of consolidation of the soil from PCPT, the pore pressure response during dissipation test is typically used. This method, however, requires the intermittent stopping of the advancement of the piezocone penetrometer for the dissipation test. Also, this method does not fully take into account the pore pressure interaction between near and far fields as pointed out by previous researchers (Kurup and Tumay, 1997). Thus a new rational approach is investigated here. The proposed method utilizes the pore water pressure during the penetration of the piezocone penetrometer. By its nature, the …

Toward An Understanding Of Instructor-Student Interactions: A Study Of Videoconferencing In The Postsecondary Distance Learning Classroom., Thomas R. Atkinson Jr

LSU Historical Dissertations and Theses

This qualitative case study examined interactions, the effect of instructional strategies on interactions, participant attitudes, and perceptions that occurred during two courses taught via interactive videoconferencing in higher education. Analysis of coded observational data, field notes, and interviews with students and instructors provided insights about the distance learning environment. Using an interaction model, the classroom interactions were grouped into the following categories: (a) learner-content, (b) learner-instructor, (c) learner-learner, and (d) learner-interface. Results showed that learner-instructor and learner-learner interactions were highest during classes which were organized as discussion sessions with specific guidelines for the content and the nature of questions on …

Isolation Of A Highly Active Photosystem Ii Preparation From Synechocystis 6803 Using A Histidine-Tagged Mutant Of Cp 47, Terry M. Bricker, Jason Morvant, Najy Masri, Holly M. Sutton, Laurie K. Frankel

Faculty Publications

Site-directed mutagenesis was used to produce a Synechocystis mutant containing a histidine tag at the C terminus of the CP 47 protein of Photosystem II. This mutant cell line, designated HT-3, exhibited slightly above normal rates of oxygen evolution and appeared to accumulate somewhat more Photosystem II reaction centers than a control strain. A rapidly isolatable (<7 >h) oxygen-evolving Photosystem II preparation was prepared from HT-3 using dodecyl-β-d-maltoside solubilization and Co2+ metal affinity chromatography. This histidine-tagged Photosystem II preparation stably evolved oxygen at a high rate (2440 μmol O2 (mg chl)-1 h-1), exhibited an α-band absorption maximum at 674 nm, …

Exact Relations For Effective Tensors Of Polycrystals. Ii. Applications To Elasticity And Piezoelectricity, Yury Grabovsky, Daniel S. Sage

Faculty Publications

An important necessary condition for an exact relation for effective moduli of polycrystals to hold is stability of that relation under lamination. This requirement is so restrictive that it is possible (if not always feasible) to find all such relations explicitly. In order to do this one needs to combine the results developed in Part I of this paper and the representation theory of the rotation groups SO(2) and SO(3). More precisely, one needs to know all rotationally invariant subspaces of the space of material moduli. This paper presents an algorithm for finding all such subspaces. We illustrate the workings …

Louisiana Agriculture Magazine, Fall 1998, Lsu Agricultural Experiment Station

Louisiana Agriculture

No abstract provided.

A Cloned Erwinia Chrysanthemi Hrp (Type Iii Protein Secretion) System Functions In Escherichia Coli To Deliver Pseudomonas Syringae Avr Signals To Plant Cells And To Secrete Avr Proteins In Culture, Jong Hyun Ham, David W. Bauer, Derrick E. Fouts, Alan Collmer

Faculty Publications

The Hrp (type III protein secretion) system is essential for the plant parasitic ability of Pseudomonas syringae and most Gram-negative bacterial plant pathogens. AvrB and AvrPto are two P. syringae proteins that have biological activity when produced via heterologous gene expression inside plant cells or when produced by Hrp+ bacteria. Art-like proteins, presumably injected by the Hrp system on bacterial contact with plant cells, appear to underlie pathogenic interactions, but none has been observed outside of the bacterial cytoplasm, and identifying novel genes encoding them is tedious and uncertain without a phenotype in culture. Here we describe a cloned Hrp …

Hypertension Treatment And Control In Sub-Saharan Africa, Justin Burdon, R. W. Montgomery, Richard Walker, N. Unwin, K. G.M.M. Alberti, Richard Cooper, Walinjom Muna

Faculty Publications

No abstract provided.

Louisiana Agriculture Magazine, Summer 1998, Lsu Agricultural Experiment Station

Louisiana Agriculture

No abstract provided.

Replication Banding And Sister-Chromatid Exchange Of Chromosomes Of Channel Catfish (Ictalurus Punctatus), Q. Zhang, W. R. Wolters, T. R. Tiersch

Faculty Publications

A replication banding procedure using fluorouracil (FU) and bromodeoxyuridine (BrdU) was developed for use with cultured leukocytes of channel catfish (Ictalurus punctatus). Analyzable banding patterns were produced on chromosomes stained with a fluorochrome plus Giemsa (FPG) method. The consistency of the chromosomal bands was evaluated by computer-assisted image analysis. Banding patterns of representative chromosomes including those bearing nucleolus organizer regions (NOR) were reproducible. A standard RBG-banded karyotype (R bands by BrdU and Giemsa) was established with idiograms of each chromosome. We also developed procedures to study sister- chromatid exchange (SCE) and sister-chromatid differentiation (SCD) in cultured leukocytes, without addition of …

Polymerized Chiral Micelles For Chiral Separations, Isiah M. Warner, Jian Wang

College of Science Patents

Chiral separations can be enhanced through the use of polymerized chiral micelles. Because polymerized micelles eliminate much of the complex dynamic behavior associated with conventional micelles, polymerized chiral micelles have stronger chiral recognition properties than do otherwise-identical, "conventional" or non-polymerized chiral micelles. Recovery of chiral ligands from polymerized chiral micelles is often easier, as the chiral ligands may typically be recovered by simple extraction with an appropriate organic solvent. By contrast, recovering the solute from a conventional, non-polymerized micellar medium by extraction with an organic solvent frequently results in the formation of troublesome emulsion systems. Polymerized chiral micelle systems are …

Synthesis Of Novel Amino Acids And 310- And Alpha-Helical Alpha, Alpha-Disubstituted Amino Acid Rich Antimicrobial Peptides, Thomas Scott Yokum

LSU Historical Dissertations and Theses

Amphipathic peptides rich in α, α-disubstituted amino acids (ααAAs) were synthesized and examined for antimicrobial activity and helix preference in various solvent systems. Also, a series of polar, ααAAs were synthesized for incorporation into helical peptides and a red-shifted tryptophan analog was synthesized as a fluorescent probe.

A series of short, amphipathic, 3₁₀- and α-helical peptides containing 50 to 80 percent ααAAs was synthesized. Various combinations of 1-aminocyclohexane-lcarboxylic acid, α-aminoisobutyric acid, and 4-aminopiperidine-4-carboxylic acid were incorporated using preformed acid fluorides. In vitro testing revealed that most of these peptides show direct antibacterial activity against E. coli and …

Lumières, Spring 1998, Louisiana State University And Agricultural & Mechanical College

Friends of the LSU Libraries

The bi-annual newsletters from the Friends of the Library contain information about upcoming and recent events, descriptions of new collections, a list of members, and occasional obituaries, which inform members of the news and needs of the LSU Libraries.

S98rs Sgb No. 22 (Spring Concert), Waguespack, Shelton, Wood

Student Senate Enrolled Legislation

A BILL

To appropriate four hundred dollars ($400.00) to the creation of forty (40) double-sided signs in order to promote the Spring Concert.

Louisiana Agriculture Magazine, Spring 1998, Lsu Agricultural Experiment Station

Louisiana Agriculture

No abstract provided.

A Novel Α-Type Carbonic Anhydrase Associated With The Thylakoid Membrane In Chlamydomonas Reinhardtii Is Required For Growth At Ambient Co2, Jan Karlsson, Adrian K. Ciarke, Zhi Yuan Chen, Stephanie Y. Hugghins, Youn Il Park, H. David Husic, James V. Moroney, Göran Samuelsson

Faculty Publications

A 29.5 kDa intracellular α-type carbonic anhydrase, designated Cah3, from the unicellular green alga Chlamydomonas reinhardtii is the first of this type discovered inside a photosynthetic eukaryote cell. We describe the cloning of a cDNA which encodes the protein. Immunoblot studies with specific antibodies raised against Cah3 demonstrate that the polypeptide is associated exclusively with the thylakoid membrane. The putative transit peptide suggests that Cah3 is directed to the thylakoid lumen, which is confirmed further by the presence of mature sized Cah3 after thermolysin treatment of intact thylakoids. Complementation of the high inorganic carbon concentration-requiring mutant, cia3, with a subcloned …

Measurement And Inheritance Of Resistance To Sheath Blight Caused By Rhizoctonia Solani Kuhn In Rice., Xueyan Sha

LSU Historical Dissertations and Theses

Sheath blight (ShB), caused by Rhizoctonia solani Kuhn, has been the most destructive rice disease in Louisiana. To breed ShB resistant varieties, an effective procedure for screening progenies of segregating populations is required and detailed knowledge of the mode-of-inheritance of partial ShB resistance is also necessary. In this study four inoculation methods; rice hull/grain mixture (MIX), rice straw, toothpick, and brown rice, along with five assessment systems; 0-9 rating scale (RAT9), relative lesion height (RLH), disease severity (DS), disease incidence, and lesion height were compared on nine rice genotypes showing different resistance levels to ShB. Progenies of segregating populations from …

Analysis Of Perceptions Of The 1997 Louisiana Legislature Toward The Louisiana Cooperative Extension Service., Pamela Burgess Hodson

LSU Historical Dissertations and Theses

The study determined the perceptions that the members of the 1997 Louisiana Legislature held of the Louisiana Cooperative Extension Service (LCES) and identified factors that affected the perceptions. The factors included in the study were: familiarity with LCES programs, perception of effectiveness, sources of LCES information, and participation in LCES programs. The study also determined the association of selected characteristics with Legislators' perceptions. Of the 144 legislators contacted, 109 surveys (76%) were returned. Descriptive statistics were used to describe the personal characteristics of the legislators and correlation coefficients were calculated. Stepwise multiple regression at the.05 level was used to develop …