Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Agriculture (598)
- Biology (313)
- Plant Sciences (307)
- Animal Sciences (296)
- Ecology and Evolutionary Biology (240)
-
- Kinesiology (192)
- Entomology (191)
- Agricultural Economics (173)
- Genetics and Genomics (158)
- Population Biology (109)
- Biochemistry, Biophysics, and Structural Biology (97)
- Physical Sciences and Mathematics (95)
- Biochemistry (76)
- Food Science (65)
- Agronomy and Crop Sciences (57)
- Microbiology (54)
- Marine Biology (52)
- Engineering (50)
- Agricultural Science (49)
- Plant Pathology (47)
- Medicine and Health Sciences (46)
- Molecular Biology (43)
- Cell and Developmental Biology (42)
- Terrestrial and Aquatic Ecology (42)
- Environmental Sciences (40)
- Aquaculture and Fisheries (39)
- Bioinformatics (37)
- Dairy Science (33)
- Genomics (32)
- Keyword
-
- Louisiana (37)
- Rice (32)
- Sugarcane (28)
- Soybean (24)
- Exercise (19)
-
- Physical activity (17)
- Cotton (16)
- Plant pathology (16)
- Biological control (15)
- Ecology (15)
- Louisiana Agricultural Experiment Station. (15)
- Cryopreservation (14)
- Resistance (14)
- Bovine (13)
- Reproduction (13)
- Nitrogen (12)
- Biomechanics (11)
- Corn (11)
- Horse (11)
- Motivation (11)
- Oysters (11)
- Sweetpotato (11)
- Climate change (10)
- Evolution (10)
- Fall armyworm (10)
- Probiotics (10)
- Shrimp (10)
- Biodiversity (9)
- Inflammation (9)
- Integrated pest management (9)
- Publication Year
- Publication
-
- LSU Master's Theses (829)
- LSU Doctoral Dissertations (696)
- Honors Capstones (372)
- Louisiana Agriculture (265)
- LSU Historical Dissertations and Theses (100)
-
- Occasional Papers of the Museum of Natural Science, Louisiana State University (94)
- LSU Agricultural Experiment Station Reports (66)
- Faculty Publications (62)
- Distinguished Undergraduate Researcher Program (3)
- Special Publications of the Museum of Natural Science (3)
- Reports (2)
- Data (1)
- Planetary Science Lab (1)
- Publications (1)
- Special Collections (1)
- Publication Type
- File Type
Articles 1681 - 1710 of 2496
Full-Text Articles in Life Sciences
Conferred Immunity Against The H1n1 Type A Influenza Virus In Madin-Darby Canine Kidney Cells Via Cecropin B Transfection Therapy., Tomasz P. Stryjewski
Conferred Immunity Against The H1n1 Type A Influenza Virus In Madin-Darby Canine Kidney Cells Via Cecropin B Transfection Therapy., Tomasz P. Stryjewski
Honors Capstones
No abstract provided.
Louisiana Agriculture Fall, 2007, Lsu Agcenter
Louisiana Agriculture Fall, 2007, Lsu Agcenter
Louisiana Agriculture
No abstract provided.
Louisiana Agriculture Summer, 2007, Lsu Agcenter
Louisiana Agriculture Summer, 2007, Lsu Agcenter
Louisiana Agriculture
No abstract provided.
Analysis Of The Tfc6 Promoter In Saccharomyces Cerevisiae: Transcriptional Regulation Through Tf Iiic Binding At Etc6, Daniel Edwards
Analysis Of The Tfc6 Promoter In Saccharomyces Cerevisiae: Transcriptional Regulation Through Tf Iiic Binding At Etc6, Daniel Edwards
Honors Capstones
No abstract provided.
Viscosity And Gravity Effects On The Kinetics Of E. Coli Alkaline Phosphatase, Sujatha Muralidharan
Viscosity And Gravity Effects On The Kinetics Of E. Coli Alkaline Phosphatase, Sujatha Muralidharan
Honors Capstones
No abstract provided.
Video Game Addiction: Truth Or Fiction, Lyles Thibodeaux-Harmony
Video Game Addiction: Truth Or Fiction, Lyles Thibodeaux-Harmony
Honors Capstones
No abstract provided.
Bacteria Homolog Of Frataxin, Cyay, And Its Role In The Interaction With The Isc System, Simon Yeung
Bacteria Homolog Of Frataxin, Cyay, And Its Role In The Interaction With The Isc System, Simon Yeung
Honors Capstones
No abstract provided.
A Checklist Of The Amphibians And Reptiles Of México, Ernest A. Liner
A Checklist Of The Amphibians And Reptiles Of México, Ernest A. Liner
Occasional Papers of the Museum of Natural Science, Louisiana State University
No abstract provided.
The Purification Of Helicobacter Pylori Urease Β Subunit Protein And Dna For Vaccine Production, Alyson Moll
The Purification Of Helicobacter Pylori Urease Β Subunit Protein And Dna For Vaccine Production, Alyson Moll
Honors Capstones
No abstract provided.
Louisiana Agriculture Spring, 2007, Lsu Agcenter
Louisiana Agriculture Spring, 2007, Lsu Agcenter
Louisiana Agriculture
No abstract provided.
A Sine-Based Dichotomous Key For Primate Identification, Jacquelyn W. Zimmerman
A Sine-Based Dichotomous Key For Primate Identification, Jacquelyn W. Zimmerman
Honors Capstones
No abstract provided.
Louisiana Agriculture Winter, 2007, Lsu Agcenter
Louisiana Agriculture Winter, 2007, Lsu Agcenter
Louisiana Agriculture
No abstract provided.
Record-Keeping Systems Adoption By Louisiana Dairy Farmers, Elisabeth Grisham
Record-Keeping Systems Adoption By Louisiana Dairy Farmers, Elisabeth Grisham
LSU Master's Theses
Fifty Louisiana dairy farmers were interviewed to gather production amounts, costs of production, management techniques, technologies adopted, and demographic information. These data were used to analyze what record-keeping systems the farmers were adopting and to what extent the systems were being used. Logit, ordered probit, negative binomial regression, OLS regression, and double hurdle models were used to determine adoption and intensity. In this study, age was found to decrease the probability that a farmer would believe their computer was not at all useful and also of limited usefulness, while increasing the probability that a farmer would believe the computer was …
Effects Of Protein Sources On Growth And Hormonal Status Of Weaned Dairy Calves, Christopher Aaron Sissell
Effects Of Protein Sources On Growth And Hormonal Status Of Weaned Dairy Calves, Christopher Aaron Sissell
LSU Master's Theses
Eight Holstein calves approximately 6 months of age (mean BW 185.15 + 16.16 kg) were used in a replicated 4 x 4 Latin Square experiment to study effects of protein sources on performance of weaned dairy calves. Dietary treatments consisted of 16% CP diets with three sources of ruminally undegradable protein (RUP). Experimental diets were corn-silage based, with soybean meal (SBM) as the source of ruminally degradable protein (control) and 3 sources of RUP including heat treated soybean meal (SBM) (SoyPLUS®), animal protein blend (PRO-LAK), and extruded-expelled SBM, included at 45% of the dietary CP. The animals were fed their …
Effect Of Culture Conditions On Gene Expression In Manipulated Bovine Embryos, Megan Nicole Purpera
Effect Of Culture Conditions On Gene Expression In Manipulated Bovine Embryos, Megan Nicole Purpera
LSU Master's Theses
Numerous studies have reported aberrant gene expression levels attributed to suboptimal in vitro culture conditions presented to embryos. Since the culture environment is a common aspect of both in vitro production (IVP) and nuclear transfer (NT), research focusing on the in vitro culture system will have the potential to improve both techniques. This study investigated the effects of different culture systems and protein sources on the developmental competence of IVP embryos measured by cleavage and blastocyst rates, cell number, and relative abundance of oct-4, nanog, connexin 43, and GLUT-1 transcripts when compared to in vivo embryos. Experiment 1 compared IVP …
Impact And Interaction Of Samea Multiplicalis (Lepidoptera: Pyralidae) And Cyrtobagous Salviniae (Coleoptera: Curculionidae) On Salvinia Minima In South Louisiana And The Foraging Behavior Of Solenopsis Invicta (Hymenoptera: Formicidae) On Salvinia Minima, Sunil Tewari
LSU Master's Theses
A field study was conducted in 2005 and 2006 to evaluate the impact and interaction of the herbivores Cyrtobagous salviniae Calder and Sands and Samea multiplicalis Guenee on common salvinia, Salvinia minima Baker in south Louisiana. It was a completely randomized experimental design in which treatments consisted of C. salviniae and S. multiplicalis feeding on common salvinia both independently and together along with a control. Our study revealed that treatments consisting of C. salviniae and S .multiplicalis feeding both independently and together had a significant impact on the biomass of common salvinia. Sampling done in October of both 2005 and …
An Assessment Of The Risk Mapping System For The Use Of Managing Loblolly Pine Decline Sites Within Red-Cockaded Woodpecker Habitat, Roger Dale Menard
An Assessment Of The Risk Mapping System For The Use Of Managing Loblolly Pine Decline Sites Within Red-Cockaded Woodpecker Habitat, Roger Dale Menard
LSU Master's Theses
A decline of loblolly pine (Pinus taeda L.), characterized by expanding areas of declining and dead trees, has become prevalent at Fort Benning, Georgia. A 3 year study was conducted to determine the kinds of fungi, insects, and site disturbances associated with this problem. The insects Dendroctonus terebrans, Hylastes salebrosus, Hylastes tenuis, Pachylobius picivorus and Hylobius pales were significantly more abundant in symptomatic than in asymptomatic loblolly pine plots. These root and lower stem-infesting insects consistently carried the fungi Leptographium terebrantis, L. procerum, and L. serpens. Root sampling revealed high levels of root damage and mortality, staining and infection with …
Analyzing The Cost Of Harvesting And The Economic Structure Of Florida Grouper Fishery, I. Cristian Nedelea
Analyzing The Cost Of Harvesting And The Economic Structure Of Florida Grouper Fishery, I. Cristian Nedelea
LSU Master's Theses
This study uses a translog cost function to investigate the technical and economic relationships present among a sample of Florida grouper longline vessels. The existence of jointness-in-inputs and non-separability between inputs and outputs suggests that resource management should be based on multiproduct production theory, and that explicit recognition of the economic interactions among species should be incorporated in any regulatory process. The cross-price elasticities of input demands showed substitution relationships between input pairs, implying that imposed regulation on the single input will be compensated for by increases in the other inputs. Furthermore, model results showed apparently substantial economies of scope, …
Intracellular Lipids In Bos Indicus And Box Taurus Oocytes, Casey Bryant Ballard
Intracellular Lipids In Bos Indicus And Box Taurus Oocytes, Casey Bryant Ballard
LSU Master's Theses
It has been proposed that Bos indicus when compared with Bos taurus embryos are more sensitive to cryopreservation procedures due to higher intracellular lipid content of the embryos. With cyropreservation of Bos indicus embryos increasing for export, it is essential to improve the viability of these cryopreserved embryos. In Experiment I, M-II oocytes from mice, pigs and cows were subjected to two different procedures to evaluate lipid content. The lipid content present in pig oocytes was significantly (P<0.05) higher when compared with mouse and cow oocytes. Pig oocytes had a lower settling point in the sucrose buoyant density gradient and higher Nile Red units, which indicated higher lipids present in the oocytes. In Experiment II, it was determined that M-II oocytes aspirated from superstimulated Brahman donors were significantly higher (P<0.05) in lipid content compared with English breed donors. The lipid content present in Brahman oocytes was higher when compared with English breeds when tested with a sucrose buoyant density gradient and Nile Red staining. In addition, donor females with higher body condition scores were significantly (P<0.05) higher in oocyte lipid content when compared with donor females of lower body condition scores. Furthermore, animal body condition scores, cholesterol and triglyceride levels prior to oocyte aspiration may be indicators of intracellular lipids in the oocytes and embryos. To our knowledge, this is the first report that evaluated intracellular lipid content of M-II oocytes of different beef breed types using a sucrose buoyant density gradient and Nile Red staining.
Effects Of Amino Acids On The Properties Of White-Fleshed And Orange-Fleshed Beauregard Sweet Potato Starch, Stephanie Helen Lockwood
Effects Of Amino Acids On The Properties Of White-Fleshed And Orange-Fleshed Beauregard Sweet Potato Starch, Stephanie Helen Lockwood
LSU Master's Theses
This study assessed the effects of amino acid additives, aspartic acid, leucine, lysine, and methionine, on the pasting and thermal characteristics of white-fleshed and orange-fleshed Beauregard sweet potato starches. Also, the white-fleshed and the orange-fleshed sweet potato starches were compared for any differences in their resistant starch and crystalline properties. This study was performed using Differential Scanning Calorimetery (DSC), Rapid Visco Analysis (RVA), X-ray Diffraction (XRD), and Resistant Starch Determination. The orange-fleshed starch granules began to gelatinize at a lower temperature (56.8°C) than the white-fleshed starch (70.1°C), but the two starches needed the same amount of energy to gelatinize. Lysine …
Psychological Correlates Of Exercise Behavior Among Adolescents, Kevin C. Paul
Psychological Correlates Of Exercise Behavior Among Adolescents, Kevin C. Paul
LSU Master's Theses
According to the 2003 Youth Risk Behavior Surveillance Survey, 33% of youth in grades 9-12 participated in an insufficient amount of vigorous and moderate physical activity (PA), and 11% reported no vigorous and moderate PA. Although researchers have examined the psychological correlates of exercise behavior among youth, limited research investigating moderators of the theories of reasoned action (TRA; Ajzen & Fishbein, 1980) and planned behavior (TPB; Ajzen, 1985) in this population exists. Therefore, the main purpose of this study was to examine socioeconomic status (SES) as a moderator of the psychological correlates of exercise intention and behavior using the TRA/TPB …
Effects Of Cryopreservation And Constituents Of Semen Extenders On Mitochondrial Function Of Bull Spermatozoa, Abdulhakeem Hashim Eljarah
Effects Of Cryopreservation And Constituents Of Semen Extenders On Mitochondrial Function Of Bull Spermatozoa, Abdulhakeem Hashim Eljarah
LSU Doctoral Dissertations
This study investigated the effects of semen extender constituents and cryopreservation on bovine spermatozoal mitochondrial function. Three yearling Holstein bulls were used. Two ejaculates per bull were collected and pooled on a weekly basis for five weeks and extended in four treatments: 1) sodium citrate egg yolk extender with antibiotics (lincomycin, spectinomycin, gentamicin and tylosin); 2) ¡°1¡± with glycerol; 3) ¡°2¡± without antibiotics; and 4) ¡°1¡± without antibiotics. Each was divided into portions for analyses before freezing and after cryopreservation. The pre-freeze and thawed semen were transferred to a 37¡ãC water bath, the same assays were performed. In experiment 1, …
Sensory Characteristics And Optimization Of A Low-Sodium Salt Formulation And Its Food Application, Armen Khachatryan
Sensory Characteristics And Optimization Of A Low-Sodium Salt Formulation And Its Food Application, Armen Khachatryan
LSU Doctoral Dissertations
Excessive consumption of sodium is associated with high blood pressure in people. Reduction of sodium intake and replacement of salt with salt substitutes are an essential component of the primary prevention of hypertension. Potassium chloride is the most widely used salt substitute. However, when used in large amounts, it imparts bitterness and metallic aftertaste. Therefore, bitterness masking agents need to be used in salt substitute formulations. L-Arginine has been reported to have bitterness masking properties. No research has yet been conducted to investigate the effects of KCl and L-Arginine on the perception of saltiness and bitterness in the mixture of …
Culture-Independent Identification Of Gut Bacteria In Fourth-Instar Red Imported Fire Ant, Solenopsis Invicta Buren, Larvae, Albert Hon-Yu Lee
Culture-Independent Identification Of Gut Bacteria In Fourth-Instar Red Imported Fire Ant, Solenopsis Invicta Buren, Larvae, Albert Hon-Yu Lee
LSU Doctoral Dissertations
Red imported fire ants (RIFA), Solenopsis invicta Buren, are medical, urban, and agricultural pests from South America. Fourth-instar larvae are used by the colony to digest solid food and then regurgitate it for consumption by workers and queens. Larvae are an ideal source of investigations of obligate endosymbiotic bacteria possibly involved in nutrient distributions. I attempted to first identify what bacteria species are in the guts of larvae followed by antibiotic and microscopy work to further study their roles in the ants. The composition of the bacterial community in fire ant larvae was described with culture-independent methods utilizing 16S rDNA …
Population Ecology Of Pseudacteon Tricuspis Borgmeier (Diptera: Phoridae), An Introduced Parasitoid Of The Red Imported Fire Ant Solenopsis Invicta Buren (Hymenoptera: Formicidae) In Louisiana, Donald Charles Henne
Population Ecology Of Pseudacteon Tricuspis Borgmeier (Diptera: Phoridae), An Introduced Parasitoid Of The Red Imported Fire Ant Solenopsis Invicta Buren (Hymenoptera: Formicidae) In Louisiana, Donald Charles Henne
LSU Doctoral Dissertations
Aspects of the population ecology of a parasitoid (Pseudacteon tricuspis) of the red imported fire ant (Solenopsis invicta) in Louisiana were studied. The spatio-temporal abundance patterns, dispersal, population spread, aggregation, direct mutual interference and functional response characteristics of this parasitoid were studied to address deficiencies in our knowledge about phorid flies, particularly Pseudacteon parasitoids. This endoparasitoid was discovered to manipulate host ant behavior in ways that benefit its own survival. Laboratory experiments to gain insights into behavioral and functional responses revealed that fly aggregations were density-dependent and interference was not significant when 1-3 females were simultaneously confined with hosts, although …
Spatial Econometric Analysis Of Agglomeration Economies Associated With The Geographical Distribution Of The U.S. Biotech Industry, Pramod Reddy Sambidi
Spatial Econometric Analysis Of Agglomeration Economies Associated With The Geographical Distribution Of The U.S. Biotech Industry, Pramod Reddy Sambidi
LSU Doctoral Dissertations
This dissertation analyzed spatial agglomeration economies associated with the geographical distribution of the U.S. biotech industry. Three location issues associated with the biotech industry were addressed in the study. The first study utilized a Bayesian spatial tobit model and examined the overall and regional differences in factors affecting the location of the U.S. biotech industry. The second study examined the inter- and intra-industry spatial association of biotech related research and development (R&D) and testing facilities across all contiguous U.S. counties employing a Spatial Two-Stage Least Squares model. Finally, the interdependence between different subsectors of the U.S. biotech industry was analyzed …
Maximize Muscle Mechanical Output During The Stretch-Shortening Cycle--The Contribution Of Preactivation And Stretch Load, Mianfang Ruan
Maximize Muscle Mechanical Output During The Stretch-Shortening Cycle--The Contribution Of Preactivation And Stretch Load, Mianfang Ruan
LSU Doctoral Dissertations
It is well documented that the stretch-shortening cycle (SSC), the most common muscle behavior, enhances muscle mechanical output. Stretch load and muscle preactivation level have been suggested as the two important factors regulating mechanical output. The purpose of this series studies is to systematically examine influences of the preactivation and the stretch load on muscle mechanical output during SSC. In the First study, a two dimensional lower extremity dynamic model was used to evaluate the influence of the approach on mechanical output. The peak summed power during the push-off phase demonstrated a quadratic trend across heights and appeared to be …
Liability, Institutions, And Determinants Of Landowner Access Policies For Fee-Based Recreation On Private Lands, James Emery Henderson
Liability, Institutions, And Determinants Of Landowner Access Policies For Fee-Based Recreation On Private Lands, James Emery Henderson
LSU Doctoral Dissertations
Landowners in the Lower Mississippi Valley or Delta may be willing to consider alternative land uses for some acreage, particularly for marginal agricultural lands. Recreational hunting, fishing, and wildlife watching opportunities on private land for public use may be a possible way to provide income to landowners and restore marginal lands as a contributor to the local economy. Previous studies have identified that landowners often chose not to engage in recreational leasing due to liability concerns. Thus, an institutional change that reduces liability risk to landowners may increase the amount of private land available for public recreation and reduce transaction …
The Influence Of Controllability On College Women's Efficacy And Attributions In Physical Activity, Julie Franks Gill
The Influence Of Controllability On College Women's Efficacy And Attributions In Physical Activity, Julie Franks Gill
LSU Doctoral Dissertations
There is evidence that individuals’ attributional patterns are important determinants of behavior. Controllability had been identified as an influential dimension of causal attributions. When individuals believe their actions have an effect, or control, on the outcome of an event, they are more likely to engage in a behavior. Contingency of feedback can be used to manipulate perceptions of controllability. The purpose of this study was to investigate the effect of controllability on causal attributions, efficacy, and performance in an exercise setting, using a design that accounts for explanatory styles. It was hypothesized that non-contingent outcomes on an initial task would …
Self-Control Of Learning Multiple Motor Skills, Wilbur Fong Wah Wu
Self-Control Of Learning Multiple Motor Skills, Wilbur Fong Wah Wu
LSU Doctoral Dissertations
Learning is commonly referred to as a “two-way street” between the learner and instructor. Until recently, learning has been studied using a “one-way” approach in which numerous studies have explored learning in situations where the experimenter or instructor shapes the practice environment. A number motor learning studies have shown the effectiveness of the learners’ abilities to control various aspects within their learning environment. Studies on augmented feedback (Chiviacowsky & Wulf, 2002; Janelle, Kim, & Singer, 1995), observational learning (Wulf, Raupach, & Pfeiffer, 2005), and physical assistance devices (Wulf & Toole, 1999) have found that learning is enhanced when individuals are …