Digital Commons Network^™

A Study On The Relationship Between Eggshell Color And Eggshell Quality In Commercial Broiler Breeders, Lawrence Hatten Iii

Honors Capstones

No abstract provided.

African-American Garden Culture: A Study Of Tradition And Translation, Sally Akers Joachim

LSU Historical Dissertations and Theses

Many studies have been done on cultural gardening practices and their resulting forms: a Japanese meditation garden or the Italian use of water elements are two examples. This research revolved around the assumption that African-Americans have distinct ways of expressing their ethnic history, values, and traditions in their built environments. Studies have been conducted in rural areas with African-American subject gardeners; this study investigates the urban and suburban yards and gardens of African-Americans in San Antonio, Texas to leam how cultural heritage affects the design or arrangement of personal space in the city, and to identify physical elements that could …

Regulation Of Signal Transducers And Activators Of Transcription (Stats) By Effectors Of Adipogenesis: Coordinate Regulation Of Stats 1, 5a, And 5b With Peroxisome Proliferator-Activated Receptor-Γ And C/Aaat Enhancer Binding Protein-Α, William C. Stewart, Ron F. Morrison, Sherry L. Young, Jacqueline M. Stephens

Faculty Publications

We have recently demonstrated that three signal transducers and activators of transcription (STAT) family members are induced during adipocyte differentiation (Stephens et al., J. Biol. Chem. 271 (1996) 10441- 10444). Since STATs 1, 5A, and 5B are induced during adipocyte differentiation, we have examined the ability of these proteins to be regulated by components of the differentiation cocktail. In addition, we have examined the effects of potent effectors of differentiation on STAT protein expression during adipogenesis. A negative effector, tumor necrosis factor-α (TNFα), and a positive effector, a thiazolidinedione, were used in these experiments. Our results demonstrate that the expression …

Biogeochemical Transformations And Potential Polyaromatic Hydrocarbon Degradation In Macrofaunal Burrow Sediments, W. K. Chung, Gary M. King

Faculty Publications

A variety of polyaromatic hydrocarbons (PAH) including naphthalene, phenanthrene, acenaphthene, and dibenzothiophene were degraded with little or no lag in oxic slurries of marine sediments from burrow walls constructed by benthic macrofauna. PAH degradation potentials of burrow sediments from the polychaetes Nereis virens and Clymenella torquata, the mollusc Mya arenaria and the enteropneust Saccoglossus bromophenolosus were generally greater than potentials for non-burrow sediments; relative rates of degradation varied among the burrow wall sediments depending on the PAH assayed. Comparisons of the effects of available electron acceptors (oxygen, nitrate, ferric iron, sulfate) indicated that significant degradation of benzene, hexadecane and PAH …

Louisiana Agriculture Fall, 1999, Lsu Agcenter

Louisiana Agriculture

No abstract provided.

Hands-On History: Lessons Of War, Lessons Of Art, Maureen Stack Sappey

Civil War Book Review

The collaboration of writer Nancy Clayton and illustrator Susan Spellman has resulted in Draw History: Civil War, a noteworthy book that combines historical facts with step-by-step art lessons. Clayton, whose writing progresses smoothly from the first to the last page, slips at times into t....

Unfinished Work: The Freedmen's Bureau's Hard-Fought But Incomplete Accomplishments, James D. Hardy

Civil War Book Review

From July to October 1865, Union Major General Carl Schurz toured the South from Charleston to New Orleans. He inspected a region defeated in war and living amidst appalling physical destruction. Everywhere, he observed a breakdown in law and order and a population close to chaos. Amongst the newly....

The Impact Of Accelerating Land-Use Change On The N-Cycle Of Tropical Aquatic Ecosystems: Current Conditions And Projected Changes, J. A. Downing, M. Mcclain, R. Twilley, J. M. Melack, J. Elser, Nancy N. Rabalais, W. M. Lewis Jr., R. Eugene Turner, J. Corredor, D. Soto, A. Yanez Arancibia, J. A. Kopaska, R. W. Howarth

Faculty Publications

Published data and analyses from temperate and tropical aquatic systems are used to summarize knowledge about the potential impact of land-use alteration on the nitrogen biogeochemistry of tropical aquatic ecosystems, identify important patterns and recommend key needs for research. The tropical N-cycle is traced from pre-disturbance conditions through the phases of disturbance, highlighting major differences between tropical and temperate systems that might influence development strategies in the tropics. Analyses suggest that tropical freshwaters are more frequently N-limited than temperate zones, while tropical marine systems may show more frequent P limitation. These analyses indicate that disturbances to pristine tropical lands will …

Louisiana Agriculture Summer, 1999, Lsu Agcenter

Louisiana Agriculture

No abstract provided.

Phytochelatin Synthase Genes From Arabidopsis And The Yeast Schizosaccharomyces Pombe, Suk Bong Ha, Aaron P. Smith, Ross Howden, Wendy M. Dietrich, Sarah Bugg, Matthew J. O'Connell, Peter B. Goldsbrough, Christopher S. Cobbett

Faculty Publications

Phytochelatins (PCs), a family of heavy metal-inducible peptides important in the detoxification of heavy metals, have been identified in plants and some microorganisms, including Schizosaccharomyces pombe, but not in animals. PCs are synthesized enzymatically from glutathione (GSH) by PC synthase in the presence of heavy metal ions. In Arabidopsis, the CAD1 gene, identified by using Cd-sensitive, PC-deficient cad1 mutants, has been proposed to encode PC synthase. Using a positional cloning strategy, we have isolated the CAD1 gene. Database searches identified a homologous gene in S. pombe, and a mutant with a targeted deletion of this gene was also Cd sensitive …

Nurse Laureate: Walt Whitman Was The Spirit Of Human Sympathy', Lewis P. Simpson

Civil War Book Review

Excluding his poetic record of the war years in Drum Taps and elsewhere, John Harmon McElroy in The Sacrificial Years: A Chronicle of Walt Whitman's Experiences in the Civil War offers a larger selection than has heretofore been made of Whitman's prose record of his life, thoughts, and....

A Study On The Multiple Effects Of Egg Shell Color On Egg And Chick Characteristics In Commercial Broiler Breeders, Kirk Martin Vitry

Honors Capstones

No abstract provided.

The Life History Of Southern Flounder (Paralichthys Lethostigma) In Louisiana Waters, Andrew James Fischer

LSU Historical Dissertations and Theses

The objectives of this study were to describe the life history patterns of the southern flounder (Paralichthys lethostigma) in Louisiana waters through determination of age, growth, and reproductive biology. A variety of sample sources were included to demonstrate how the southern flounder life cycle is dependent on both the estuary and offshore waters throughout the various stages of its life cycle. Females exhibited greater lengths then males reaching a maximum of 764mm total length and males a maximum of 414mm. Ages were estimated through examination of transverse sections of sagittal otoliths. Annuli were validated to form yearly in the winter …

The Life History Of Southern Flounder (Paralichthys Lethostigma) In Louisiana Waters, Andrew James Fisher

LSU Historical Dissertations and Theses

The objectives of this study were to describe the life history patterns of the southern flounder (Paralichthys lethostigma) in Louisiana waters through determination of age, growth, and reproductive biology. A variety of sample sources were included to demonstrate how the southern flounder life cycle is dependent on both the estuary and offshore waters throughout the various stages of its life cycle. Females exhibited greater lengths then males reaching a maximum of 764mm total length and males a maximum of 414mm. Ages were estimated through examination of transverse sections of sagittal otoliths. Annuli were validated to form yearly in the winter …

Archaeological Investigation Of Unit Two At The Sharp Site (16lv13), Livingston Parish, Louisiana, Laura Cathleen Tanley

LSU Historical Dissertations and Theses

This thesis is an examination of southeastern Louisiana archaeology focusing on Unit Two at the Sharp site (16LV13) on the Lower Amite River. The artifact analysis, and more specifically the pottery analysis, demonstrated a significant early occupation at the site. The analyzed pottery represents cultural components at the Sharp site which span from the Tchula through Coles Creek periods.

Within Unit Two there was an obvious subsistence change evident. The upper strata of the midden contained a great deal of Rangia clam shell, while the earlier cultural occupations below it did not. This change in exploitation of local food sources …

Relationship Of Egg Position During Incubation To Embryonic Growth And Mortality, Hatchability, And Chick Weight Of Broiler Breeder Eggs, Daniel Ryan Petrolia

Honors Capstones

No abstract provided.

Nutrient Enhanced Coastal Ocean Productivity In The Northern Gulf Of Mexico, William J. Wiseman Jr., Michael J. Dagg, Nancy N. Rabalais, Terry E. Whitledge

Faculty Publications

No abstract provided.

Louisiana Agriculture Spring, 1999, Lsu Agcenter

Louisiana Agriculture

No abstract provided.

Diet Overlap Of Native And Translocated Northern White-Tailed Deer In Southeastern Louisiana, Brian Matthew Zielinski

LSU Historical Dissertations and Theses

I used microhistological analysis of fecal pellets to estimate and compare seasonal diet compositions between free-ranging, southern and translocated. northern woodland white-tailed deer (Odocoileus virginianus) on Golden Ranch Hunting Farm, Gheens, Louisiana,. over four consecutive seasons, from January 1997 through January 1998. I analyzed pellet groups with Near Infrared Reflectance Spectroscopy (NIRS) and wet chemistry techniques to evaluate and compare crude protein levels between populations of deer and provide indices of diet quality. On average, native and translocated deer diets were 87.65% similar during the entire study, and were significantly associated during all seasons ( P < 0.0000 I ). suggesting that deer fed on similar plant species in like quantities throughout the year. Few differences were found in plant selection frequencies per fecal sample. hut significant differences were detected (P 0.00 l) among deer populations in the use of Berchemia scandens and Vitis rotundifolia during spring. Northern deer also ingested a greater diversity of plants (P < 0.05) during spring and winter; and fecal crude protein levels were similar (P > 0.05) in all seasons …

Diets Of White-Tailed Deer At Avery Island, Louisiana, Nathan D. Rains

LSU Historical Dissertations and Theses

I conducted a food habits study of white-tailed deer (Odocoileus virginianus) at Avery Island, Louisiana, to determine if deer diets differed among seasons. In 1997, I randomly collected 25 seasonal fecal pellet groups in January. April, August and October respectively I also collected reference forage plant samples in conjunction with fecal pellet collections I estimated botanical composition of deer diets based on a microscopic analysis of fecal pellets I compared diets using a chi- squared contingency table to assess significant seasonal variation I also used Kulczynski's similarity index to determine degree of similarity among seasonal diets

I found significant differences …

Iconic Animation Of Construction Simulation, Jonathan Jingsheng Shi, H. Zhang

Faculty Publications

This paper presents a continuous research effort the animation function in the development of the Activity-Based Construction (ABC) modeling and simulation system. ABC animation uses the constructed ABC simulation model as the animation background; and pre-created images of simulation entities move around along individual execution paths on the ABC model. A library of icons consisting of common construction entities has been created in the ABC system. To perform animation function in ABC only involves one simple additional task for the user to select an appropriate icon for a simulation entity.

Effects Of Repeated Restraint Stress On Tissue Metabolism In Rats., Jun Zhou

LSU Historical Dissertations and Theses

It has been reported that repeated restraint stress (RS), 3 hours/day for 3 days, in rats caused sustained weight loss and a temporary drop in daily food intake with no subsequent compensatory overeating during the post stress period. The hypothesis tested in the present study is that RS causes peripheral tissue metabolism changes which account for the abnormal regulation of body weight and food intake during the post stress period. Adult male Sprague Dawley rats were assigned to control, pair fed (PF) or RS groups. One day after the end of RS, midbrain urocortin mRNA was at control levels in …

Influence Of Environment And Genotype On The Expression Of Host Plant Resistance In Sweet Potato To The Sweet Potato Weevil, Cylas Formicarius (Fab.)., Lixin Mao

LSU Historical Dissertations and Theses

Field and laboratory experiments were conducted to study the influence of environment and genotype on the expression of sweetpotato resistance to the sweetpotato weevil (SPW), Cylas formicarius (Fab.). Roots of four genotypes ("W-244", "W-250", "Beauregard", "Centennial") were evaluated for SPW feeding and oviposition at three different storage times. Roots from Louisiana, South Carolina and Mississippi were also evaluated. Genotype had a significant effect on feeding and oviposition. Storage time and production sites appeared to affect resistance expression; the outcomes depend on the genotypes. The effect of nitrogen on sweetpotato resistance to SPW was studied. Four genotypes were grown in the …

Hydrostatic Pressure Alters The Time Course Of Gtp[S] Binding To G Proteins In Brain Membranes From Two Congeneric Marine Fishes, Joseph F. Siebenaller, Thomas F. Murray

Faculty Publications

The effects of hydrostatic pressure on the receptor-stimulated exchange of guanosine triphosphate (GTP) for guanosine diphosphate (GDP) on the α subunit of G proteins were studied in two congeneric marine teleost fishes that differ in their depths of distribution. The poorly hydrolyzable GTP analog [35S]guanosine 5'-[γ-thio]triphosphate ([35S]GTP[S]) was used to monitor the modulation of signal transduction by the A(I) adenosine receptor agonist N6-R-(phenylisopropyl)adenosine (R-PIA) in brain membranes of the scorpaenids Sebastolobus alascanus and S. altivelis. The maximal binding (B(max)) and dissociation constant (K(d)) values, determined from equilibrium binding isotherms at atmospheric pressure (5°C), were similar in the two species. The …

Perkinsus Marinus Extracellular Protease Modulates Survival Of Vibrio Vulnificus In Eastern Oyster (Crassostrea Virginica) Hemocytes, B. D. Tall, J. F. La Peyre, J. W. Bier, M. D. Miliotis, D. E. Hanes, M. H. Kothary, D. B. Shah, M. Faisal

Faculty Publications

The in vitro effects of the Perkinsus marinus serine protease on the intracellular survival of Vibrio vulnificus in oyster hemocytes were examined by using a time-course gentamicin internalization assay. Results showed that protease-treated hemocytes were initially slower to internalize V. vulnificus than untreated hemocytes. After 1 h, the elimination of K vulnificus by treated hemocytes was significantly suppressed compared with hemocytes infected with invasive and noninvasive controls. Our data suggest that the serine protease produced by P. marinus suppresses the vibriocidal activity of oyster hemocytes to effectively eliminate V. vulnificus, potentially leading to conditions favoring higher numbers of vibrios in …

Use Of Western Immunoblot Analysis For Testing Moose Serum For Brucella Suis Biovar 4 Specific Antibodies, Matthew D. Edmonds, Felicia M. Ward, Todd M. O'Hara, Philip H. Elzer

Faculty Publications

To determine if 12 moose (Alces alces) from northern Alaska with agglutinating antibodies specific for Brucella spp. had been exposed to either B. suis biovar 4 or B. abortus biovar 1, western immunoblot serologic analysis was performed. Differential serologic responses to strain specific A and M antigenic variances of the lipopolysaccharide O-polysaccharide sugar allowed strain identification. Prior to examination, test sera were absorbed with killed whole cells from either B. abortus biovar 1, containing predominately A antigen (A+ M-); B. melitensis biovar 1, containing essentially M antigen (A-M+); or B. suis biovar 4, containing both antigenic types (A+ M+). The …

The Siderophore 2,3-Dihydroxybenzoic Acid Is Not Required For Virulence Of Brucella Abortus In Balb/C Mice, Bryan H. Bellaire, Philip H. Elzer, Cynthia L. Baldwin, R. Martin Roop

Faculty Publications

2,3-Dihydroxybenzoic acid (DHBA) is the only siderophore described for Brucella, and previous studies suggested that DHBA might contribute to the capacity of these organisms to persist in host macrophages. Employing an isogenic siderophore mutant (ΔentC) constructed from virulent Brucella abortus 2308, however, we found that production of DHBA is not required for replication in cultured murine macrophages or for the establishment and maintenance of chronic infection in the BALB/c mouse model.

Acute Clinical Disease In Cats Following Infection With A Pathogenic Strain Of Bartonella Henselae (Lsu16), Kathy L. O'Reilly, Rudy W. Bauer, Rebecca L. Freeland, Lane D. Foil, Keith J. Hughes, Kristen R. Rohde, Alma F. Roy, Rhett W. Stout, Patricia C. Triche

Faculty Publications

Bartonella henselae is the causative agent of human cat scratch disease as well as several serious sequelae of infections, including bacillary angiomatosis and bacillary peliosis. Conflicting reports describe the pathogenesis of B. henselae in the cat. In this study, we characterized a strain of B. henselae termed LSU16. This strain was isolated on rabbit blood agar from a naturally infected 10-month-old female cat during a recurrent episode of bacteremia. The bacterial species was confirmed by PCR- restriction fragment length polymorphism analysis. Nine cats were infected intradermally with 5 x 107 CFU of LSU16, and clinical signs, antibody responses, and bacteremia …

Large Magnitude Sinusoidal Voltammetry For Reversible Electrochemical Reactions., Yide Chang

LSU Historical Dissertations and Theses

Sinusoidal voltammetry, the current response of a simple reversible electrochemical reaction under a large magnitude sinusoidal potential, is investigated in this work. The ferricyanide/ferrocyanide (Fe(CN)6-3/-4 ) redox couple at a platinum electrode, which is known to be reversible, was measured using sinusoidal potentials. Theoretical analyses, including computer-simulation of sinusoidal voltammetry at various excitation potentials, are also presented. The results obtained are in good agreement with the theoretical analysis. One remarkable advantage of sinusoidal voltammetry is that the charging current accompanying the electrode process, which is the most significant components of the noise at a fast potential scan, may be discriminated …

High School Biology Students' Participation In A Year-Long Sequence Of Analogical Activities: The Relationship Of Development Of Analogical Thought To Student Learning And Classroom Interactions., Marcella Wichser Hackney

LSU Historical Dissertations and Theses

This research explored development of analogical thought through high school biology students' participation in a year-long sequence of analogical activities. Analogizing involves: selecting a familiar analog; mapping similarities and differences between the analog and less familiar target; making inferences from the analogy; evaluating validity of the inferences; and ultimately, understanding the biological target (Holyoak & Thagard, 1995). This investigation considered: student development of independence in learning through analogical thought, student learning of biology, the relationship between development of students' analogical thinking and students' learning of biology, and the quality of student interactions in the classroom. This researcher, as teacher participant, …