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Articles 1981 - 2010 of 2496
Full-Text Articles in Life Sciences
Louisiana Agriculture Spring, 2002, Lsu Agcenter
Louisiana Agriculture Spring, 2002, Lsu Agcenter
Louisiana Agriculture
No abstract provided.
Louisiana Agriculture Winter, 2002, Lsu Agcenter
Louisiana Agriculture Winter, 2002, Lsu Agcenter
Louisiana Agriculture
No abstract provided.
One-Week Stability Of Forearm Venous Outflow As Assessed By Venous Occlusion Plethysmography, Jennifer Pitre Ortego
One-Week Stability Of Forearm Venous Outflow As Assessed By Venous Occlusion Plethysmography, Jennifer Pitre Ortego
LSU Master's Theses
The aim of this study was to test short-term and long-term reliability of venous outflow (VO) indices using the venous occlusion plethysmography technique. A secondary purpose was to compare venous measures to age, gender and various anthropometrical measures. The study group consisted of apparently healthy males and females, aged 18 to 80 years. Venous indices were under measures on two occasions (1 week apart), under the conditions of rest and following 5 min of upper arm occlusion. Venous outflow measures were calculated from the area under the curve (AUC) as well as the plethysmographic curve technique at the time .5 …
A Comparison Of Self-Report And Performance-Based Measures Of Physical Function In Older Adults, Amy Elizabeth Dunbar
A Comparison Of Self-Report And Performance-Based Measures Of Physical Function In Older Adults, Amy Elizabeth Dunbar
LSU Master's Theses
The purpose of this thesis was to examine the associations between perceived quality of life (QOL)and self-report and performance-based measures of function. An additional purpose of this thesis was to determine whether the afore-mentioned tests could differentiate between independent-living and assisted-living older adults. A total of 36 residents, independent-living (n=22) and assisted-living (n=14), of a continuing care retirement community (age range=65-94) completed the study. Perceived QOL was assessed using the SF-36 and Nottingham Health Profile. The Barthel Index and Functional Status Index (FSI) were used to assess Activities of Daily Living (ADLs). Physical function was measured using the reduced Continuous …
An Economic Analysis Of Pre-Harvesting Marketing Strategies And Financial Performance, Manuel Duarte Filipe
An Economic Analysis Of Pre-Harvesting Marketing Strategies And Financial Performance, Manuel Duarte Filipe
LSU Master's Theses
Risk is an important concern in the management of a farm business. The rising input prices along with the variability in the farm commodity prices may result in a risk environment. Government programs have generally provided income support to farmers. However, there has been considerable discussion regarding this support in recent years. The farm act of 2002 and farm bill of 1999 are good examples of such discussions. These uncertainties emphasize the need to improve information for farm's income risk management, and make some one ask if there is not out there any alternative way of managing income risk besides …
Reliability Of Wavelet Analysis Of Heart Rate Variability During Rest And Exercise, Deborah Jean Stone
Reliability Of Wavelet Analysis Of Heart Rate Variability During Rest And Exercise, Deborah Jean Stone
LSU Master's Theses
The reliability of wavelet analysis (DWT), of heart rate variability during rest and exercise was examined for this study. All twenty-three participants visited the lab on two separate occasions no less than four weeks apart. All twenty-three participants were subjected to the spontaneous breathing (SB1), and HG60 exercise condition. Of those twenty-three participants, nine performed the HG20 exercise condition as well. It was found that during the SB1 condition, the R-R intervals were fairly reliable between days. However, the reliability of all the HRV parameters (SDNN, spectral components and wavelet components) were quite poor. Interestingly, however, during HG20, the reliability …
Economic Evaluation Of Alternative Rough Rice Marketing And Storage Strategies, April Street
Economic Evaluation Of Alternative Rough Rice Marketing And Storage Strategies, April Street
LSU Master's Theses
The alternative rough rice marketing and storage strategies were evaluated using three methods of analysis. The methods used in this study were MOTAD, simulation, and stochastic dominance. Historical rough rice prices from 1980/81 - 2000/01 was used and tested for trends and seasonality in order for the methods to be formed properly. SAS was used to verify that the data used in this study did not follow any time trend or reflect seasonality. MOTAD, simulation, and stochastic dominance were used to determine the most efficient marketing and storage strategy that will enable rice farmers to make the best decisions and …
Permeability Of Rice Cystatin Across Caco-2 Cells, Tania Serigado Antunes
Permeability Of Rice Cystatin Across Caco-2 Cells, Tania Serigado Antunes
LSU Master's Theses
The present work aimed at recovering, purifying, and testing rice cystatin or oryzacystatin I (OCI) bioavailability, to provide scientific evidence that rice cystatin can be used as a functional food ingredient. OCI was extracted from rice bran using 25 mM sodium phosphate buffer containing 0.15 M NaCl at pH 7.0. The resulting homogenate was heat treated, cooled and precipitated with ammonium sulfate. The recovered protein was dialyzed against 50 mM sodium acetate buffer pH 4.8 and sequentially purified by cation exchange, size exclusion, and anion exchange chromatography. Nine hundred and seventy micrograms of protein were obtained from 1 kg of …
Factors Affecting The Selection Of Business Arrangements By Hog Producers In The United States, Christopher Gazzara Davis
Factors Affecting The Selection Of Business Arrangements By Hog Producers In The United States, Christopher Gazzara Davis
LSU Doctoral Dissertations
The structure of the U.S. hog industry is changing rapidly. U.S. hog farms have become smaller in number, larger in size and more specialized. This study examines the factors that influence the hog producer's choice among business arrangements offered in the U.S. hog industry. A national survey was mailed to 4,986 hog producers to determine these factors. The survey consisted of questions covering topics such as: production characteristics, autonomy, transaction costs, risk, social relationships, and demographics. A response rate of 21% was received from the mailed surveys. Four alternative business arrangements were used: independent production, cooperative farming, flat-fee contract, and …
Vagal Modulation Of The Heart And Central Hemodynamics During Dynamic Handgrip Exercise And Forearm Occlusion Following Forearm Exercise Training, Heidi A. Kluess
Vagal Modulation Of The Heart And Central Hemodynamics During Dynamic Handgrip Exercise And Forearm Occlusion Following Forearm Exercise Training, Heidi A. Kluess
LSU Doctoral Dissertations
The purpose was to examine the cardiovascular response to an acute bout of handgrip exercise before and after non-dominant arm exercise training. 19 people participated in 16 sessions of exercise training and 16 participants acted as controls (age: 20±1yrs). Blood flow measurements were taken at rest and following 3-min of forearm occlusion (RHBF) using plethysmography. Pneumotachometer, ECG, and blood pressure data were continuously collected during three testing conditions (spontaneous breathing (SB1: 5min), handgrip exercise (0.5hz) at 60%MVC with 50mmHg of pressure on the arm (H60+50mmHg: 5 min), and forearm occlusion (FAO: 3min)). Data were analyzed for respiratory rate, mean R-R …
Adoption Of Best Management Practices In The Louisiana Dairy Industry, Noro C. Rahelizatovo
Adoption Of Best Management Practices In The Louisiana Dairy Industry, Noro C. Rahelizatovo
LSU Doctoral Dissertations
The traditional view of the agricultural community as a good steward of the environment has been challenged by increasing concerns about the complex relationship between agricultural production activities and environmental quality. Agriculture provides a large range of products to satisfy human needs. It has also been singled out as major source of water pollution. Largely improved surface water quality has been assessed in the U.S. since the enactment of the Clean Water Act. However, efforts to reduce water pollution continue, targeting discharges from identifiable sources of water pollution and diffused discharges from nonpoint sources. Agricultural producers are encouraged to voluntarily …
Nutrient Profile, Functional Properties, And Microstructure Of Dried Waste Milk Products For Use As A Potential Animal Feed, Ronald I. Thompson
Nutrient Profile, Functional Properties, And Microstructure Of Dried Waste Milk Products For Use As A Potential Animal Feed, Ronald I. Thompson
LSU Doctoral Dissertations
A study was conducted to determine the feasibility of concentrating the wastewater of a butter/powder factory for use as an animal feed. Two concentrated products were evaluated: recovered milk product (RMP), which is the direct factory waste stream; and formulated recovered milk product (FRMP), which is a product made by combining RMP and separator de-sludge in a 3:1 ratio. Three pilot scale dryer systems were used to concentrate the product: a spray dryer, a roller dryer, and a pulse combustion dryer. Dried samples were analyzed for fat, moisture, protein, ash, nitrates, chloride, pH, calcium, phosphorus, sodium and amino acids. Values …
Dynamic Econometric Modeling Of The U.S. Wheat Grain Market, Carlos Walter Robledo
Dynamic Econometric Modeling Of The U.S. Wheat Grain Market, Carlos Walter Robledo
LSU Doctoral Dissertations
Structural-time series models have not gained much ground in commodity market modeling despite the overwhelming popularity of time series approaches in forecasting and dynamic analyses. This dissertation contributes by applying developments in seasonal cointegration and structural-time series analysis (e.g., Zellner and Palm (1974); Hsiao (1997); Lee (1992); Franses and Kunst (1999); Ghysels and Osborn, 2001) to the study of agricultural commodity markets. The focus is on three research themes. The first theme investigates the role of cointegration and seasonal cointegration for market data, an issue considered timely because most applications assume deterministic seasonal components. The second issue breaks new ground …
Superfetation In Beef Cattle, Joel Andrew Carter
Superfetation In Beef Cattle, Joel Andrew Carter
LSU Doctoral Dissertations
Although superfetation has been reported in cattle and other species, there is considerable skepticism as to its existence due to the lack of clear evidence in these reports. Other explanations such as embryonic diapause or differential growth of twins have been suggested as more accurate descriptions of the cases reported as superfetation. The hypothesis of this study is that if a viable pregnancy can ensure maternal recognition in cattle, an asynchronous embryo can develop in a more chronologically advanced uterine environment. The objective was to produce superfetation by (1) ovulation induction and artificial insemination (AI) of pregnant cows and (2) …
Treatment Of Organic And Inorganic Pollutants In Municipal Wastewater By Agricultural By-Product Based Granular Activated Carbons (Gac), Rishipal Rastrapal Bansode
Treatment Of Organic And Inorganic Pollutants In Municipal Wastewater By Agricultural By-Product Based Granular Activated Carbons (Gac), Rishipal Rastrapal Bansode
LSU Master's Theses
The objective of this investigation was to evaluate pecan and almond shell-based granular activated carbon's viability to effectively remove organic and inorganic pollutants in municipal wastewater compared to commercial carbons, Filtrasorb 200 (bituminous coal-based), and GRC-20, 206C AW (coconut shell-based). The solution to the objective was approached under three distinct phases, namely (I) physical and chemical characterization of the pecan and almond shell-based experimental and bituminous coal and coconut shell-based commercial granular activated carbons; (II) treatment of organic contaminants in municipal wastewater by experimental and commercial GACs; (III) treatment of inorganic contaminants in municipal wastewater by experimental and commercial GACs. …
Development Of Low-Fat Sugar-Free Orange Sherbet Containing Soy Protein, Jonathan Aaron Walker
Development Of Low-Fat Sugar-Free Orange Sherbet Containing Soy Protein, Jonathan Aaron Walker
LSU Master's Theses
Consumer interest in healthy eating and self-medication is not just a passing fad. Soy-based products have become increasingly popular and gradually moved into the mainstream market. Many consumers associate soy with a healthy consumption pattern. Development of frozen desserts that indulge consumers’ eating desire, yet provide potential health benefits, is a challenge. Product appraisal to identify specific sensory attributes driving product acceptance is vital to the introduction of this new product. This thesis research was designed to develop low-fat sugar-free orange sherbet products containing soy protein and to determine the consumer sensory profile driving product acceptance and purchase intent. Two …
Hazard Analysis Critical Control Point (Haccp), Microbial Safety, And Shelf Life Of Smoked Blue Catfish (Ictalurus Furcatus), Ligia Virginia Antonia Da Silva
Hazard Analysis Critical Control Point (Haccp), Microbial Safety, And Shelf Life Of Smoked Blue Catfish (Ictalurus Furcatus), Ligia Virginia Antonia Da Silva
LSU Master's Theses
Quality deterioration of smoked catfish is caused by lipid oxidation and microbial spoilage. Smoked catfish can be cross-contaminated during processing and may harbor several pathogens, e.g., Listeria monocytogenes, and Salmonella spp. Lipid oxidation causes unpleasant flavor, thus making smoked fish unacceptable. Hydroperoxides and free radicals, formed during oxidation, may directly react with fish tissues to promote complex reactions. Through such complex reactions, physicochemical properties of smoked catfish may be adversely affected. A combination of smoking and treatments with antimicrobial agents and antioxidants would retard microbial spoilage, extend shelf life, and enhance safety of smoked catfish. The objective of this study …
Discrimination Of Cardiac Health And Disease By Assessment Of Heart Rate Variability: Wavelet Vs. Fast Fourier Transformation, Jusonda Leray Derouen
Discrimination Of Cardiac Health And Disease By Assessment Of Heart Rate Variability: Wavelet Vs. Fast Fourier Transformation, Jusonda Leray Derouen
LSU Master's Theses
The autonomic nervous system (ANS) modulation of the heart is of clinical importance because of its relevance to risk of life threatening arrhythmic events. Decomposition of heart rate variability (HRV) has been used to quantify ANS control of the heart. The traditional method for frequency analysis has involved the use of fast Fourier transformation (FFT). However, heart rate data typically violate assumptions of the FFT. Therefore, the assessment of HRV may benefit from other, potentially more suitable, mathematical approaches. For example, the discrete wavelet transformation (DWT) appears to have promise with respect to its ability to discriminate between healthy and …
Screening And Characterization Of Pathogenic Fungi For Possible Control Of Coptotermes Formosanus, Jianzhong Sun
Screening And Characterization Of Pathogenic Fungi For Possible Control Of Coptotermes Formosanus, Jianzhong Sun
LSU Doctoral Dissertations
Coptotermes formosanus was used as “bait” to isolate pathogenic fungi from soil. Fifteen pathogenic fungal isolates were obtained, all either Metarhizium anisopliae (six isolates) or Beauveria bassiana (nine isolates). There were no differences in numbers of fungal isolates from the three sampling locations. However, significantly more isolates were found in woodlands (eleven) than in pastures (four). Median lethal doses (LD50s) of these fungal species to C. formosanus were interspersed, indicating that fungal isolates rather than species had the greatest effect on virulence. In vitro growth characteristics were significantly correlated with virulence against termites, suggesting that fungal virulence might be predicted …
The Effects Of Growth Hormone Or Melatonin On The Reproductive Axis Of Stallions, William Andrew Storer
The Effects Of Growth Hormone Or Melatonin On The Reproductive Axis Of Stallions, William Andrew Storer
LSU Master's Theses
Two experiments were conducted to determine the effects of growth hormone (GH) or melatonin on the reproductive axis of the stallion. In Experiment 1, nine stallions were treated with GH (20 µg/kg BW) or saline for 21 d starting in January. During the last week of treatment, stallions were subjected to low and high dose injections of luteinizing hormone (LH), as well as low and high dose combined injections of gonadotropin releasing hormone (GnRH) and thyrotropin releasing hormone (TRH). Two months after the onset of GH treatment, semen was collected from all stallions every other day for 2 weeks. Treatment …
Endocrine And Reproductive Responses To Implants Of Deslorein Acetate In Horses, Carrie Ann Johnson
Endocrine And Reproductive Responses To Implants Of Deslorein Acetate In Horses, Carrie Ann Johnson
LSU Doctoral Dissertations
Four experiments were performed to study the effects of the gonadotropin releasing hormone (GnRH) analog, deslorelin acetate (Ovuplant™), on endocrine and reproductive characteristics in mares. The first experiment tested whether anecdotal field reports of Ovuplant causing extended interovulatory intervals would be detectable under controlled, experimental conditions. The use of Ovuplant to hasten ovulation in 13 mares, compared to 12 controls, increased (P < 0.05) the interovulatory interval by 6.2 d and suppressed (P < 0.05) plasma concentrations of both luteinizing hormone (LH) and follicle stimulating hormone (FSH) for approximately 11 d. Two mares receiving Ovuplant did not return to estrus within 30 d. In the second experiment, 10 control mares and 10 mares induced to ovulate with Ovuplant were administered GnRH (50 μg) on d 1, 4, 7, and 10 after ovulation. Again, treated mares had a longer (4.4 d, P < 0.05) interovulatory interval and suppressed LH and FSH concentrations in daily plasma samples. The gonadotropin response to GnRH was lower (P < 0.05) in the deslorelin mares on d 1, 4, and 7, indicating a lack of pituitary responsiveness. In the third experiment, 9 stallions and 12 steroid-treated geldings were used to determine if males were potential models for studying the deslorelin-induced gonadotropin suppression. In both cases, treatment with Ovuplant caused an initial rise in both gonadotropins followed by suppression for about 14 d. In the last experiment, 21 mares were used to determine if multiple doses of deslorelin would cause complete ovarian shutdown. Mares received either sham injections, three Ovuplant implants on the first day, or one implant per day for 3 d (n = 7 per group). Treatment with multiple deslorelin implants increased (P < 0.05) the interovulatory interval by 14.8 d and suppressed LH and FSH concentrations for approximately 25 d, however no mares exhibited complete ovarian shutdown. In conclusion, deslorelin acetate implants in horses in the form of Ovuplant induce short-term increases in LH and FSH secretion followed by long-term suppression of these concentrations and an insensitivity of the pituitary to GnRH. In a small percentage of mares, long-term ovarian shutdown is a possibility.
Beef Producer Perferences For Various Livestock Revenue Protection Products: A Conjoint Approach, Deacue Fields Iii
Beef Producer Perferences For Various Livestock Revenue Protection Products: A Conjoint Approach, Deacue Fields Iii
LSU Doctoral Dissertations
The federal government has recently approved legislation to develop revenue insurance products that are affordable and user-friendly for livestock producers. The features of the products will be the ultimate determinant of product acceptance among producers. The objective of the study was to determine the relative importance of livestock revenue insurance product attributes as well as to identify the characteristics of beef cattle producers who prefer certain levels of a given product attribute. Conjoint analysis was utilized to determine the importance of selected attributes. Conjoint Designer was used to develop eleven hypothetical insurance products from four attributes with three levels each. …
Tryptophan Requirements And The Effects Of Supplemental Tryptophan On Growth Performance, Plasma Metabolites, And Meat Quality In Nursery, Growing, And Finishing Pigs, Amy Christina Guzik
Tryptophan Requirements And The Effects Of Supplemental Tryptophan On Growth Performance, Plasma Metabolites, And Meat Quality In Nursery, Growing, And Finishing Pigs, Amy Christina Guzik
LSU Doctoral Dissertations
This research was conducted to estimate the true digestible Trp (dTrp) requirements in nursery, growing, and late finishing pigs and the effects of supplemental Trp on physiology, behavior, and meat quality. Five experiments were conducted to estimate the dTrp requirement in nursery pigs. Using broken-line regression analysis, dTrp requirements were 0.21, 0.20, and 0.18% for Phase I (5.2 to 7.3 kg), II (6.3 to 10.2 kg), and III (10.3 to 15.7) nursery pigs. In addition, four experiments were conducted to estimate the dTrp requirements in growing and finishing pigs. Using broken-line regression analysis, the dTrp requirement of pigs weighing 30.9, …
Litter And Ground Dwelling Spiders Of Mixed Mesophytic Forest In Southeast Louisiana, Joyce Fassbender
Litter And Ground Dwelling Spiders Of Mixed Mesophytic Forest In Southeast Louisiana, Joyce Fassbender
LSU Master's Theses
During Pleistocene glaciation much of the southeastern United States was covered with mixed mesophytic hardwood forest. These forests are composed predominantly of magnolia, holly, and beech with a mixture of other tree species, such as oak and hickory, and a distinct understory. Remnants of mixed mesophytic hardwood forests occur in the southern United States and are important refugia for disjunct and habitat-restricted species. In Louisiana, the mixed mesophytic forest habitat is found mostly in West Feliciana Parish, particularly in the area around St. Francisville. I chose two sites to conduct a study of spider diversity in litter habitats of disturbed …
Follicular Growth And Development And Gonadotropin Response Of Mares Treated With Dihydrotestosterone And Estradiol Benzoate, Scarlett Lynn Mcmeen
Follicular Growth And Development And Gonadotropin Response Of Mares Treated With Dihydrotestosterone And Estradiol Benzoate, Scarlett Lynn Mcmeen
LSU Master's Theses
An experiment was conducted to determine the effects of dihydrotestosterone (DHT) and estradiol benzoate (EB) given simultaneously on concentrations of FSH and LH and the associated follicular activity, and to monitor the subsequent recovery of the gonadotropes and follicular growth following treatment with either DHT or EB. Twelve mares were assigned to daily treatments of DHT (150 Fg/kg BW) plus EB (22 Fg/kg BW) from d 0 through 30 (Phase I). Beginning on d 31, mares were randomly assigned to one of three treatment groups: 1) oil, 2) DHT (150 Fg/kg BW), or 3) EB (22 Fg/kg BW). On d …
Rum Aroma Descriptive Analysis, Sabina Maza Gomez
Rum Aroma Descriptive Analysis, Sabina Maza Gomez
LSU Master's Theses
Rum contains a large number of compounds that contribute to the complex aroma, some of which present in a very small amount. This fact represents a problem for the use of chemical analysis as a way to ascertain the quality of rum and to determine differences in rums products. Descriptive sensory analysis techniques can be useful in such circumstance, not only because they are easier to achieve, but because they give valuable information on the actual perceived aroma of the products. The first part of this work consisted of the development of lexicon for describing rums. A group of 5 …
The Effect Of Nocturnal Sampling On Semen Quality And The Efficiency Of Collection In Bovine Species, Jennifer H. Yates
The Effect Of Nocturnal Sampling On Semen Quality And The Efficiency Of Collection In Bovine Species, Jennifer H. Yates
LSU Master's Theses
The objective of this study was to evaluate two semen collection schedules utilizing the assumed behavioral differences between bovine species. The efficiency was measured by bull behavior and semen quality parameters. Four Holstein and four Brahman bulls were collected each during a morning and a night collection time weekly. Ejaculates (n=64) were obtained via artificial vagina over four-weeks. To avoid masking benefits of night collection, the first collection of the week was alternated between night and day. Two collection teams were employed to reduce the time needed for collection, and the variability in collection method. Sampling order and collection team …
The Effects Of Phytase In Nutritionally Adequate Diets, Diets Deficient In Calcium And Phosphorus, And The Interactive Effects Of Phytase And Eimeria Acervulina Infection In Broiler Chicks, Brandy Centrell Watson
The Effects Of Phytase In Nutritionally Adequate Diets, Diets Deficient In Calcium And Phosphorus, And The Interactive Effects Of Phytase And Eimeria Acervulina Infection In Broiler Chicks, Brandy Centrell Watson
LSU Master's Theses
Six experiments were conducted to determine the interactive effects of Eimeria acervulina (E. acervulina) infection and phytase, and the effects of phytase in nutritionally adequate diets and in diets deficient in Ca and available P (aP). Corn-soybean meal (C-SBM) diets were used. In Exp 1, treatments were: 1) C-SBM, 1.0% Ca and 0.45% aP; 2) C-SBM, 0.80% Ca and 0.25% aP; 3) Diet 1 + 600 FTU phytase/kg; 4) Diet 2 + 600 FTU phytase/kg; 5 to 8) Diets 1 to 4 but infected with coccidiosis. Weight gain (ADG), feed intake (ADFI), and gain:feed were reduced (P < 0.01) by the coccidial infection and the reduction in Ca and aP. Phytase increased (P < 0.02) ADG and ADFI, regardless of the Ca and aP content of the diet or the presence of coccidiosis. Gain:feed was increased by phytase but only in uninfected chicks (phytase x coccidiosis interaction, P < 0.02). Phytase increased (P < 0.02) bone ash percentage but only in diets deficient in Ca and aP (P < 0.01). Experiments 2 and 3 included only treatments 1 to 4 of Exp 1. The reduction in Ca and aP reduced (P < 0.01) ADG, ADFI, and gain:feed. Phytase addition increased (P < 0.02) ADG and ADFI in diets deficient in Ca and aP and in the nutritionally adequate diets. Experiments 4, 5, and 6 were conducted to determine the effects of phytase on intestinal transit time in broilers. Diets were: 1) C-SBM, 0.9% Ca and 0.35% aP; 2) C-SBM, 0.80% Ca and 0.25% aP + 600 FTU phytase/kg. Transit time on Day 1, but not on Day 7, was faster (P < 0.03) in chicks fed phytase. These data indicate that phytase is effective in the presence of a coccidial infection, but it may not be as effective as in uninfected chicks. Futhermore, phytase increases growth in diets deficient in Ca and aP and in diets formulated to be adequate in all nutrients. This increase in growth may be due to a faster transit time of feed through the digestive tract, resulting in a greater feed intake and gain.
Coordination Of The Lower Extremity Muscles During Gait Transitions, Lorna Louise Ogden
Coordination Of The Lower Extremity Muscles During Gait Transitions, Lorna Louise Ogden
LSU Master's Theses
Often the approach to investigating muscular coordination during transitions entailed conducting tests at speeds held constant. This study investigated muscular activity during continuously changing speeds in order to further detail and quantify neuromuscular changes during gait transitions. Twelve healthy adults, 18-41 years of age, were recruited as participants. Informed consent was obtained. Gait transitions were induced by the speed of the treadmill changing with constant acceleration. Reflective markers were placed on anatomical landmarks of the hip, knee,ankle, heel, and 5 th metatarsal joint. Bipolar surface electrodes were positioned on the subjects’skin over the muscular bellies of the gluteus maximus (GM), …
Analysis Of Consumer Perceptions Toward Biotechnology And Their Preferences For Biotech Food Labels, St. Everald A. Mclennon
Analysis Of Consumer Perceptions Toward Biotechnology And Their Preferences For Biotech Food Labels, St. Everald A. Mclennon
LSU Master's Theses
Using a sample from the seven largest metropolitan areas in the United States, (Denver, Chicago, Los Angeles, Atlanta, New Orleans, New York, and Houston), consumer attitudes concerning agricultural biotechnology is examined. Conjoint analysis is used to examine consumer preferences for the labeling of biotech foods. The study examines the relationship between the consumer’s knowledge and attitudes regarding biotech foods and their preferences for food labels. Consumers’ attitudes regarding a healthy diet, and their risk perceptions regarding biotech foods were found to have a significant effect on the general use of food labels and preferences for labeling of biotech foods. The …