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2007

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Environmental Factors Affecting Water Intake In Steers Finishing In Feedlots, Rodrigo A. Arias, Terry L. Mader Jan 2007

Environmental Factors Affecting Water Intake In Steers Finishing In Feedlots, Rodrigo A. Arias, Terry L. Mader

Nebraska Beef Cattle Reports

Simple and multiple regression analyses were executed using records of six experiments conducted from 1999 to 2006 at the University of Nebraska Northeast Research and Extension Center. The objective of the study was to obtain the best equation to predict water intake of feedlot steers under summer and winter weather conditions. The analysis permitted regression equations to be obtained for summer, winter and both seasons (overall model). From simple regression analysis, the best predictor of water intake was minimum temperature with r2= 0.61 in the overall model. Whereas, from multiple regression analysis the overall model with the best …

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Effect Of Distillers Grains Composition And Level On Steers Consuming High-Quality Forage, Mark E. Corrigan, Galen E. Erickson, Terry J. Klopfenstein, Kyle J. Vander Pol, Matthew A. Greenquist, Matt K. Luebbe, Kip Karges, Matt L. Gibson Jan 2007

Effect Of Distillers Grains Composition And Level On Steers Consuming High-Quality Forage, Mark E. Corrigan, Galen E. Erickson, Terry J. Klopfenstein, Kyle J. Vander Pol, Matthew A. Greenquist, Matt K. Luebbe, Kip Karges, Matt L. Gibson

Nebraska Beef Cattle Reports

An experiment was conducted to determine the effects of dried distillers grains (DDG) supplementation level and composition on growing steer performance and forage intake. Factors included DDG supplementation level (0.25, 0.50, 0.75 or 1.00% of BW), and DDG solubles level (0, 5.4, 14.5, 19.1, or 22.1% DM). Final BW improved, and forage intake decreased with increasing levels of DDG. An interaction between DDG supplementation level and solubles level was observed on ADG and F:G and was likely related to supplemental fat levels. Supplementation of forages with DDG improves performance while decreasing forage intake when fat levels are not too great.

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Houses Great And Small: Reevaluating The 'House' In Chaco Canyon, New Mexico, Carrie Heitman Jan 2007

Houses Great And Small: Reevaluating The 'House' In Chaco Canyon, New Mexico, Carrie Heitman

Department of Anthropology: Faculty Publications

In recent years, a growing number of archaeologists have explored the potential of expanding Lévi-Strauss’ concept of house societies to better understand specific archaeological contexts. Looking specifically at the classificatory distinction between “great houses” and “small houses” within Chaco Canyon (A.D. 850–1180), I suggest this theoretical model might yield new insights with regard to four symbolic dimensions of house construction: the use of wood, directional offerings, resurfacing practices, and the bones of ancestors. Using Puebloan ethnographic literature and cross-cultural comparisons, I suggest a house model analysis may serve to integrate anomalous “ceremonial” dimensions of house construction in an effort to …

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Effect Of Sorting And Feeding Optaflexx On Performance And Economics Of Long Yearling Steers, William A. Griffin, Terry J. Klopfenstein, Galen E. Erickson, Dillon M. Feuz, Kyle J. Vander Pol, Matthew A. Greenquist Jan 2007

Effect Of Sorting And Feeding Optaflexx On Performance And Economics Of Long Yearling Steers, William A. Griffin, Terry J. Klopfenstein, Galen E. Erickson, Dillon M. Feuz, Kyle J. Vander Pol, Matthew A. Greenquist

Nebraska Beef Cattle Reports

A two-year experiment evaluated the effects of sorting long yearling steers by initial feedlot BW and supplementing 200 mg/steer of Optaflexx daily the last 28 days of the feeding period on ADG, F/G, carcass characteristics and profitability. Feedlot ADG, F/G, and profitability were not effected by sorting. However, sorted cattle exhibited increased fat thickness, increased ribeye area, and increased percentage of carcasses with a yield grade of four or higher. Supplementing Optaflexx the last 28 days of the feeding period had no effect on feedlot performance, carcass characteristics, or profitability.

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Off-Flavor Mitigation In Cow Steaks, Donald A. Moss, Chris R. Calkins Jan 2007

Off-Flavor Mitigation In Cow Steaks, Donald A. Moss, Chris R. Calkins

Nebraska Beef Cattle Reports

Strip loins from fed (high energy diet for at least 60 days) and nonfed cows were treated with 1% water a solution containing one of four commercial bitter blockers to determine if off-flavors could be blocked. Neither trained nor consumer taste panels detected differences among the bitter blockers. Trained panelists frequently found metallic, sour, rancid, bloody, salty, and bitter flavors, with nonfed cow beef having more bloody, bitter, and burnt off-flavors. Consumers most frequently identified bloody, metallic and liver-like off-flavors in cow beef, but found no differences in frequency of off-flavor notes between fed and nonfed cow beef. Commercial bitter …

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Effects Of Aging On Beef Chuck And Round Muscles Enhanced With Ammonium Hydroxide And Salt, Adam E. Hamling, Chris R. Calkins Jan 2007

Effects Of Aging On Beef Chuck And Round Muscles Enhanced With Ammonium Hydroxide And Salt, Adam E. Hamling, Chris R. Calkins

Nebraska Beef Cattle Reports

This study was conducted to determine if aging alters the beneficial effects of enhancement with a 20% solution of water, ammonium hydroxide, and salt, on beef steaks. For all muscles (triceps brachii, biceps femoris, rectus femoris), steaks had lower shear force values when compared to non-pumped controls at every aging period (1, 7, 14 days). Also, enhanced steaks received more desirable evaluations for tenderness, juiciness, flavor, and overall acceptability at every aging period from consumer taste panels. These data indicate aging does not decrease the benefits of enhancement.

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Ranking Beef Muscles For Warner-Bratzler Shear Force And Trained Sensory Panel Ratings, Gary A. Sullivan, Chris R. Calkins Jan 2007

Ranking Beef Muscles For Warner-Bratzler Shear Force And Trained Sensory Panel Ratings, Gary A. Sullivan, Chris R. Calkins

Nebraska Beef Cattle Reports

Combining 60 years of published research, 40 different beef muscles were ranked by Warner-Bratzler shear force. Relative ranks for tenderness, juiciness and beef flavor ratings were also determined. The psoas major and infraspinatus are the two most tender. Sensory tenderness ratings correlated to shear force means (-0.85; p=0.001) where a desirable tenderness rating reflected a low shear force. These data help reconcile differences among various studies of beef tenderness and provide a weighted ranking for beef muscles, which will be useful when selecting muscles for value-added beef products.

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Diurnal And Dietary Impacts On Purine Derivative Excretion From Spot Samples Of Urine, Grant I. Crawford, Kyle Vander Pol, James C. Macdonald, Galen E. Erickson, Terry J. Klopfenstein Jan 2007

Diurnal And Dietary Impacts On Purine Derivative Excretion From Spot Samples Of Urine, Grant I. Crawford, Kyle Vander Pol, James C. Macdonald, Galen E. Erickson, Terry J. Klopfenstein

Nebraska Beef Cattle Reports

An individual feeding experiment was conducted to estimate diurnal and dietary impacts on microbial CP (MCP) production estimated from urinary purine derivative (PD) and creatinine excretion. Heifers were fed one of three diets formulated to produce differences in MCP production: an 85% steam-flaked corn-based diet (SFC); the SFC diet with 1.5% urea (UREA); or a corn milling byproduct-based diet (BYPROD). Spot samples of urine were collected at 0700 and 1700 hours. No urine collection time x dietary treatment interactions were present for any variable. Dry matter intake, ADG, and F:G were poorest with the SFC treatment. Urinary PD:creatinine (PD:C) ratio …

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Chronic Exposure Of Ruminal Fluid Cultures To Treatments That Inhibit Methanogenesis, Eric J. Behlke, James M. Takacs, Stephen W. Ragsdale, Clayton Mcneff, Peter Newsome, Jess L. Miner Jan 2007

Chronic Exposure Of Ruminal Fluid Cultures To Treatments That Inhibit Methanogenesis, Eric J. Behlke, James M. Takacs, Stephen W. Ragsdale, Clayton Mcneff, Peter Newsome, Jess L. Miner

Nebraska Beef Cattle Reports

Methanogenesis in ruminal cultures was inhibited by Yucca shidigera, 2-bromoethanesulfonate, and a nitrofuranyl para-aminobenzoic acid derivative. Only the nitrofuranyl para-aminobenzoic acid derivative remained effective beyond 10 days of culture indicating that this may be an effective treatment for chronically inhibiting methane production in cattle.

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Inhibition Of Vascular Endothelial Growth Factor Manipulates Follicles In Beef Females, Robert A. Cushman, Debra T. Clopton, Mark F. Allan, S. E. Echternkamp, Andrea S. Cupp Jan 2007

Inhibition Of Vascular Endothelial Growth Factor Manipulates Follicles In Beef Females, Robert A. Cushman, Debra T. Clopton, Mark F. Allan, S. E. Echternkamp, Andrea S. Cupp

Nebraska Beef Cattle Reports

Vascular Endothelial Growth Factor (VEGF) is produced by cells surrounding the egg in the follicle. If VEGF is inhibited, ovulation does not occur. Understanding how VEGF regulates follicle development may allow for manipulation of estrous cycles. In previous studies in our laboratory, blocking the actions of VEGF decreased activation of early stage follicles in neonatal rat ovary cultures. Therefore, we hypothesized inhibition of VEGF actions would also inhibit follicle activation in bovine ovarian cortical cultures. Inhibition of VEGF did inhibit follicle progression, thus regulation of VEGF may be a way to manipulate follicle development and more accurately time ovulation.

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Taking The Right To Abortion In Croatia Seriously - One Of The Basic Constitutional Rights Or A Rudiment Of The Right To Reproduction?, Dalida Rittossa Jan 2007

Taking The Right To Abortion In Croatia Seriously - One Of The Basic Constitutional Rights Or A Rudiment Of The Right To Reproduction?, Dalida Rittossa

Cardozo Journal of Equal Rights & Social Justice

No abstract provided.

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Working Waterfronts In Ri, Tom Murphy Jan 2007

Working Waterfronts In Ri, Tom Murphy

Sea Grant Law Fellow Publications

No abstract provided.

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Old Harbor Land Dispute, Jonathan Lew Jan 2007

Old Harbor Land Dispute, Jonathan Lew

Sea Grant Law Fellow Publications

No abstract provided.

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Cornea, Carnap, And Current Closure Befuddlement, Stephen J. Wykstra Jan 2007

Cornea, Carnap, And Current Closure Befuddlement, Stephen J. Wykstra

Faith and Philosophy: Journal of the Society of Christian Philosophers

No abstract provided.

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Jean Porter, Nature As Reason: A Thomistic Theory Of The Natural Law, David A. Horner Jan 2007

Jean Porter, Nature As Reason: A Thomistic Theory Of The Natural Law, David A. Horner

Faith and Philosophy: Journal of the Society of Christian Philosophers

No abstract provided.

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Strange Yarns, Matthew Thomas Bourgeois Jan 2007

Strange Yarns, Matthew Thomas Bourgeois

LSU Master's Theses

I leave a good portion of my art up to chance or my unconscious self, this shows me how closely my prints and drawings relate to the dream world. In dreams most of the physical laws are abandoned, reason and mind are not the dictators of the dream. Dreams have their own logic and are a perfect place to explore a narrative that leaves itself open for the viewer to put any number of meanings into.

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Detection Of The Bloodmeal Origin Of Mosquitoes Collected At Alligator Farms, And West Nile Virus Activity In Mosquitoes Collected From Alligator Farms, Sentinel Chicken Surveillance Sites, And Larval Habitats, Isik Unlu Jan 2007

Detection Of The Bloodmeal Origin Of Mosquitoes Collected At Alligator Farms, And West Nile Virus Activity In Mosquitoes Collected From Alligator Farms, Sentinel Chicken Surveillance Sites, And Larval Habitats, Isik Unlu

LSU Doctoral Dissertations

A three year study was conducted to determine if testing mosquitoes collected in modified sentinel chicken boxes for West Nile Virus (WNV) or testing sentinel chickens for WNV antibody would detect WNV activity prior to reports of human cases in East Baton Rouge (EBR) Parish, Louisiana. In one year we also compared the effectiveness of CDC light traps, gravid traps, and sentinel chicken box traps for collecting WNV positive mosquitoes. In all three years, we detected WNV activity in mosquito collections from sentinel chicken box traps prior to the onset of human cases, while there were no seroconversions in the …

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Identification Of Molecular Markers And Association Mapping Of Selected Loci Associated With Agronomic Traits In Rice, Suresh Babu Kadaru Jan 2007

Identification Of Molecular Markers And Association Mapping Of Selected Loci Associated With Agronomic Traits In Rice, Suresh Babu Kadaru

LSU Doctoral Dissertations

Discriminate Analysis as a procedure was evaluated to select molecular markers associated with complex traits in US rice germplasm. Markers for percent head rice, percent total rice, and grain yield were identified with high levels of correct classification that mapped within or near traditional Quantitative Trait Loci (QTL). Mixed model-regression procedure to identify molecular markers that predict phenotypic variance associated with four agronomic traits was created and validated in two distinct rice inbred populations. Main and epistatic effects were identified by standard hypothesis testing and Bayesian information criteria in a multivariate format. The new procedure increased power and enhanced prediction …

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Wood Liquefaction In The Presence Of Phenol With A Weak Acid Catalyst And Its Potential For Novolac Type Wood Adhesives, Hui Pan Jan 2007

Wood Liquefaction In The Presence Of Phenol With A Weak Acid Catalyst And Its Potential For Novolac Type Wood Adhesives, Hui Pan

LSU Doctoral Dissertations

Wood liquefaction was conducted using phenol as a reagent solvent with oxalic acid as a catalyst. A series of studies were done on liquefied wood, liquefied wood residues, novolac-type liquefied wood resins, and bio-composites fabricated from liquefied wood resin. The results of the liquefied wood residue characterization revealed that the liquefaction reactions conducted in different reaction vessels underwent different liquefaction mechanisms. The crystallinity indexes of the liquefied wood residues were higher than that of the original wood, indicating that the amorphous lignin was the most susceptible component in wood to the liquefaction reaction. Fe2+ and Fe3+ ions were found to …

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Balch Internet Research And Analysis Tool Development Case Study, Charles V. Balch Jan 2007

Balch Internet Research And Analysis Tool Development Case Study, Charles V. Balch

LSU Doctoral Dissertations

The Internet has become increasing popular as a vehicle to deliver surveys. An essential objective of research is to collect accurate data and there has been little work to insure that Internet survey systems are employing best practices as defined by academic and professional research to collect data. My dissertation reviews the current literature relating to best practices in Internet survey design and best practices in software design and development. I then document the development and deployment of an Open Source and publicly licensed Internet survey system that allows researchers to easily create, deploy, and analyze the results of Internet …

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Using Time-Lapse And Stroboscopic Photography To Enhance Student Understanding Of Plant Growth, Structure, And Pollination: An Inquiry-Based Study, Louis John Schultz Jan 2007

Using Time-Lapse And Stroboscopic Photography To Enhance Student Understanding Of Plant Growth, Structure, And Pollination: An Inquiry-Based Study, Louis John Schultz

LSU Doctoral Dissertations

This study was designed to evaluate the effects of allowing students to generate their own images in a science class as opposed to using pre-existing images. The participants in the study were 7th grade science students enrolled in a small, rural, Louisiana school. A mixed methods design was used so that call available data was collected and analyzed. The lessons used in the study were based on plant structure, growth, and propagation which fit into the mandated 7th grade science curriculum. The students were involved in the taking of still, time-lapse, and stroboscopic images throughout the study. Although an analysis …

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The Relationship Of Selected Personal Characteristics Of E-Faculty To Their Perceived Technological Knowledge, Myriah Christin Clark Jan 2007

The Relationship Of Selected Personal Characteristics Of E-Faculty To Their Perceived Technological Knowledge, Myriah Christin Clark

LSU Doctoral Dissertations

This study investigated the technological development of e-faculty at five randomly selected Carnegie classified (2006) Doctorate-Granting Research Universities with very high research activity (RU/VH) in the Southern Regional Education Board (SREB). The majority of e-faculty report that they do not have release time/reduced teaching load for preparing web-based materials/courses, nor do they have graduate or teaching assistants available for assisting with web-based learning. However, a little over half of them reported having instructional designers or curriculum developers to help with the designing of web-based materials and a large majority reported having adequate institutional research resources (library holdings that are accessible …

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Hydrodynamic Modeling Of A Hypothetical River Diversion Near Empire, Louisiana, Nathan Lamont Dill Jan 2007

Hydrodynamic Modeling Of A Hypothetical River Diversion Near Empire, Louisiana, Nathan Lamont Dill

LSU Master's Theses

Hydrodynamic models of a hypothetical Mississippi river diversion near Empire, LA are constructed using two popular finite element codes RMA2 and ADCIRC. In a series of simulations eddy viscosity parameters and bottom friction parameters are varied. Constant boundary conditions, discharge inflow and elevation outflow, are applied and water surface elevation and velocity solutions at fully developed flow are taken as steady-state results. A particle tracking code is developed and applied to the velocity solutions to aid in flow field comparisons. The results elucidate the model sensitivities to the varied parameters, and also provide for a comparison of the two different …

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Phylogenetic Systematics, Biogeography, And Evolutionary Ecology Of The True Crocodiles (Eusuchia: Crocodylidae: Crocodylus), Jamie Richard Oaks Jan 2007

Phylogenetic Systematics, Biogeography, And Evolutionary Ecology Of The True Crocodiles (Eusuchia: Crocodylidae: Crocodylus), Jamie Richard Oaks

LSU Master's Theses

Modern crocodylian systematics has been dominated by investigations of higher-level relationships aimed at resolving the disparity between morphological and molecular data, especially regarding the true gharial (Gavialis). Consequently, no studies to date have provided adequate resolution of the interspecific relationships within the most broadly distributed, ecologically diverse, and species-rich crocodylian genus, Crocodylus. In this study, Bayesian and ML partitioned phylogenetic analyses were performed on a DNA sequence dataset of 7,282 base pairs representing four mitochondrial regions, nine nuclear loci, and all 23 crocodylian species. The analyses were performed on a suite of partitioning strategies to investigate the modeling effects of …

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The Effects Of 3-Dimensional Cadd Modeling Software On The Development Of The Spatial Ability Of Ninth Grade Technology Discovery Students, K. Lynn Basham Jan 2007

The Effects Of 3-Dimensional Cadd Modeling Software On The Development Of The Spatial Ability Of Ninth Grade Technology Discovery Students, K. Lynn Basham

LSU Doctoral Dissertations

The purpose of this quantitative study was to determine if there is a difference in the development of spatial abilities of ninth grade Technology Discovery students in Mississippi as measured by the Purdue Visualization of Rotations Test. Students experienced one of three differing instructional methods utilizing Pro/Desktop® 3-D CADD solid modeling software. Participants were students in Mississippi schools operating on a 4 x 4 block schedule during either fall or spring semesters during the 2005-2006 school year, and a control group of students whose schools did not offer CADD. Instructional material designed by the researcher was used for two instructional …

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Application-Specific Reliable Data Transfer In Wireless Sensor Networks, Damayanti Datta Jan 2007

Application-Specific Reliable Data Transfer In Wireless Sensor Networks, Damayanti Datta

LSU Doctoral Dissertations

A wireless sensor network (WSN) is a collection of sensor nodes and base stations connected via wireless medium. It sends data collected from the nodes to the base stations for generating information. The size and low cost of the sensor nodes as well as the WSN's ability to connect without wired links are its key advantages which enable it to be deployed in hostile or inaccessible environments at low cost. However, WSNs suffer from high data loss due to the inherent weaknesses in a wireless transmission medium, transmission problems in hostile environments due to human interference, etc. and node failures …

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Drivers Of Liking And Effects Of Corn Hybrics On Quality Of Corn Tortilla, Jose Andres Herrera Corredor Jan 2007

Drivers Of Liking And Effects Of Corn Hybrics On Quality Of Corn Tortilla, Jose Andres Herrera Corredor

LSU Doctoral Dissertations

Corn tortilla, an ancient staple food of Mexico and Central America, is still the base food in those countries and has also become more popular in other countries with high Hispanic population. However, mechanization of corn tortilla production has modified the original sensory attributes to new standards that meet manufacturer’s requirements. The first part of this study attempted to determine the sensory attributes that drive consumer’s decision on the acceptability and purchase intent of the corn tortilla available in the Mexican market. The findings may help manufacturers to improve the processing of tortilla and develop products with ethnic authenticity. Overall …

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The Effect Of Food Deprivation On Cigarette Smoking In Females, Darla E. Kendzor Jan 2007

The Effect Of Food Deprivation On Cigarette Smoking In Females, Darla E. Kendzor

LSU Doctoral Dissertations

Studies have shown that food deprivation is associated with increases in the self-administration of nicotine and other substances in laboratory animals. However, little is known about the effects of food deprivation on substance use in humans. The purpose of the present study was to compare smoking rates, expired carbon monoxide levels, and smoking topography in 15 female participants during a state of acute food deprivation and in a non-deprived state. A within-subjects design was utilized to test the primary hypotheses that smoking rate and expired carbon monoxide levels would be greater among the participants in the food-deprived condition than in …

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Narratives In Music: Schelmo, Hebraic Rhapsody For Cello And Orchestra, Asu Perihan Karadut Jan 2007

Narratives In Music: Schelmo, Hebraic Rhapsody For Cello And Orchestra, Asu Perihan Karadut

LSU Doctoral Dissertations

Born in July 1880, in Geneva, Switzerland, Ernest Bloch became one of the leading composers of the 20th century. He wrote series of works, which he called “The Jewish Cycle.” They represented a new, distinctive musical language, in which Bloch combined eastern and western music traits. Schelomo, Hebraic Rhapsody for Cello and Orchestra (1915-16) was the last composition from the cycle. It showed mastery of a style Bloch had been developing since his earlier compositions. This project will show Schelomo’s place in “The Jewish Cycle” and its importance on Bloch’s departure from the popular trends of the early 20th century. …

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Effects Of Capping On Biodegradation Of Organic Contaminants In Sediments, Eun Ju Lee Jan 2007

Effects Of Capping On Biodegradation Of Organic Contaminants In Sediments, Eun Ju Lee

LSU Doctoral Dissertations

Sediment capping remains an effective remediation technique for contaminated sediments due to its capability to contain contaminants and provide a sound habitat for indigenous biota. This research investigated the effect of capping on biodegradation of organic contaminants in Anacostia River sediments using both experimental and modeling techniques. 14C–Phenanthrene mineralization was monitored under various redox conditions in Anacostia River sediments. Mineralization of 14C–phenanthrene was strongly linked to sulfate reduction, which was the more energetic process than any other anaerobic condition in Anacostia sediments. Sulfate is a more promising terminal electron acceptor for intrinsic degradation in Anacostia River and other PAH contaminated …

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