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Western Kentucky University

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Articles 3421 - 3450 of 4178

Full-Text Articles in Life Sciences

Kentucky Warbler (Vol. 80, No. 4), Kentucky Library Research Collections Nov 2004

Kentucky Warbler (Vol. 80, No. 4), Kentucky Library Research Collections

The Kentucky Warbler

No abstract provided.


Ua66/5 Newsletter, Wku Agriculture Oct 2004

Ua66/5 Newsletter, Wku Agriculture

WKU Administration Documents

Newsletter created by WKU Agriculture Department re: faculty/staff, students/alumni, student organizations and clubs and donors.


Effects Of Management And Population Size On Genetic Diversity Of Eggert's Sunflower (Helianthus Eggertii; Asteraceae), John Howard Starnes Aug 2004

Effects Of Management And Population Size On Genetic Diversity Of Eggert's Sunflower (Helianthus Eggertii; Asteraceae), John Howard Starnes

Masters Theses & Specialist Projects

Helianthus eggertii (Asteraceae) is a federally threatened sunflower species that typically grows between open woods and barrens. This species has both sexual and asexual modes of reproduction, which can influence the amount of genetic diversity present within and among populations. Maintaining genetic diversity is one of the primary objectives in managing threatened species or populations. Fire and population size may influence genetic diversity. Two Inter-Simple Sequence Repeat Markers (873 and MAO) were used to characterize many important genetic parameters of 17 populations in 2003 and four populations in 2004. This information was used to assess the effectiveness of different conservation …


Kentucky Warbler (Vol. 80, No. 3), Kentucky Library Research Collections Aug 2004

Kentucky Warbler (Vol. 80, No. 3), Kentucky Library Research Collections

The Kentucky Warbler

No abstract provided.


Alfred Russel Wallace: A Capsule Biography, Charles H. Smith Jun 2004

Alfred Russel Wallace: A Capsule Biography, Charles H. Smith

DLPS Faculty Publications

No abstract provided.


Influence Of Poultry Litter On Dark Tobacco Growth And Soil Nutrient Availability, Jason Simmons May 2004

Influence Of Poultry Litter On Dark Tobacco Growth And Soil Nutrient Availability, Jason Simmons

Masters Theses & Specialist Projects

Due to the relatively high value of dark tobacco compared with fertilizer costs, nitrogen is recommended at levels as high as 338 kg ha"1. Such rates of inorganic fertilizers increase the osmotic pressure of the soil solution and soil acidity, often causing reduced stands, Mn toxicity, Mo and Ca deficiencies, and reduced yield and quality of the cured leaf (Sims et al., 1984). Poultry litter utilized as a nutrient source is an inexpensive alternative to this dilemma due to its relatively neutral or alkaline composition. However, due the amount of chloride present in poultry litter, the University of Kentucky advises …


Kentucky Warbler (Vol. 80, No. 2), Kentucky Library Research Collections May 2004

Kentucky Warbler (Vol. 80, No. 2), Kentucky Library Research Collections

The Kentucky Warbler

No abstract provided.


Black And White: Structural And Functional Aspects Of Dermal Chromatophores Of The Marbled Whiptail Lizard (Cnemidophorus Marmoratus), James Swan May 2004

Black And White: Structural And Functional Aspects Of Dermal Chromatophores Of The Marbled Whiptail Lizard (Cnemidophorus Marmoratus), James Swan

Masters Theses & Specialist Projects

The skin of reptiles is a complex organ with many sensory, regulatory and behavioral functions. Desert reptiles face a suite of challenges as their skin contacts hot-dry environmental surfaces. The marbled whiptail lizard, Cnemidophorus marmoratus (Lacertilia: Teiidae), is found in hot deserts of southeastern New Mexico and western Texas and is often above ground during the hottest times of the day. When active, these lizards encounter a broad range and intensity of visible and infrared wavelengths. The role of the integument in temperature regulation, although poorly understood, is critically important for these diurnal animals. Albedo, coloration, pattern, and in some …


Kentucky Warbler (Vol. 80, No. 1), Kentucky Library Research Collections Feb 2004

Kentucky Warbler (Vol. 80, No. 1), Kentucky Library Research Collections

The Kentucky Warbler

No abstract provided.


Wallace, Alfred Russel (1823-1913), Charles H. Smith Jan 2004

Wallace, Alfred Russel (1823-1913), Charles H. Smith

DLPS Faculty Publications

No abstract provided.


Introduction (To Volume One Of Alfred Russel Wallace: Writings On Evolution, 1843-1912)*, Charles H. Smith Jan 2004

Introduction (To Volume One Of Alfred Russel Wallace: Writings On Evolution, 1843-1912)*, Charles H. Smith

DLPS Faculty Publications

No abstract provided.


Further Additions To The Bibliography Of Alfred Russel Wallace (1823-1913), Charles H. Smith Jan 2004

Further Additions To The Bibliography Of Alfred Russel Wallace (1823-1913), Charles H. Smith

DLPS Faculty Publications

No abstract provided.


Development Of A Gene Transfer System In Clostridium Scindens Vpi 12708, Rashmi Ramasubbaiah Jan 2004

Development Of A Gene Transfer System In Clostridium Scindens Vpi 12708, Rashmi Ramasubbaiah

Masters Theses & Specialist Projects

Clostridium scindens VPI 12708 (previously known as Eubacterium sp. VPI 12708) is a bile-acid dehydroxylating bacterium originally isolated from the feces of a colon cancer patient. Many genes required for bile acid 7-a dehydroxylation are found on a large bile acid inducible operon (bai) that has been extensively studied. However the bai promoter, which directs expression of the bai operon, has yet to be characterized due, in part, to a lack of a functional genetic transfer system for this strain. A spontaneous rifampinresistant Clostridium scindens VPI 12708 mutant was used as a recipient to determine the efficacy of conjugation as …


The Effect Of The Dietary Polyphenols Quercetin And Resveratrol On Wound Healing In Bovine Corneal Endothelial Cells In Vitro, Amie E. Abell Jan 2004

The Effect Of The Dietary Polyphenols Quercetin And Resveratrol On Wound Healing In Bovine Corneal Endothelial Cells In Vitro, Amie E. Abell

Mahurin Honors College Capstone Experience/Thesis Projects

The corneal endothelium is a monolayer of cells critical in maintaining a transparent cornea. Its cells are amitotic during adulthood; thus, tissue repair depends primarily on cellular growth and migration. Enhancing repair may improve recovery time from surgical procedures and corneal diseases that damage the endothelium. Inflammation resulting from endothelial injury is characterized by increased concentrations of free radicals in the endothelium and aqueous humor, slowing wound repair. The antioxidant vitamins and antioxidant enzymes neutralize free radicals, but damage can occur when this system is overwhelmed by high concentrations of reactive oxygen species. This project develops an in vitro model …


Zebrafish Cone Contributions And Erg Waveforms As Impacted By Cnqx, Margaret G. Au Jan 2004

Zebrafish Cone Contributions And Erg Waveforms As Impacted By Cnqx, Margaret G. Au

Mahurin Honors College Capstone Experience/Thesis Projects

The effect of the glutamate antagonist CNQX (6-cyano-7-nitroquinoxaline-2,3dione) on Off-bipolar cells in the zebrafish (Dania reria) was examined. CNQX has suppressed the d-wave component of electroretinogram (ERG) in other species. Here, adult zebrafish received an injection ofCNQX or saline solution. They were then presented 200 ms stimuli at 17 wavelengths and several irradiances. Spectral sensitivity was calculated from the b-wave components ofthe ERG responses. Retinal injection of CNQX impacted the a-, b-, and d-waves ofthe ERG, especially at longer wavelengths. Significant differences in the spectral sensitivity functions of the CNQX and saline groups were found at 460 nm and 540 …


Estimation Of Microbial Diversity In Poultry Litter Using Terminal Restriction Fragment Length Polymorphism And Isolation Of Phosphate Accumulating Bacteria From Poultry Litter, Yoganand Vadari Jan 2004

Estimation Of Microbial Diversity In Poultry Litter Using Terminal Restriction Fragment Length Polymorphism And Isolation Of Phosphate Accumulating Bacteria From Poultry Litter, Yoganand Vadari

Masters Theses & Specialist Projects

The contamination of fresh water by phosphates in poultry litter results in substantial eutrophication of fresh water causing fish kills and other types of environmental damage. The poultry indus try in Kentucky is expanding rapidly. The number of broilers is increasing as more poultry farms are established in the state producing waste that needs disposal. Investigations were made to study the possibility of using microorganisms normally found in poultry litter to sequester phosphate, thereby delaying phosphate runoff after litter is applied to croplands. Little is known, however, about the microflora of poultry litter. Terminal restriction fragment length polymorphism of 16S …


An Isotopic Examination Of Cave, Spring And Epigean Trophic Structures In Mammoth Cave National Park, Zacchaeus Greg Compson Jan 2004

An Isotopic Examination Of Cave, Spring And Epigean Trophic Structures In Mammoth Cave National Park, Zacchaeus Greg Compson

Masters Theses & Specialist Projects

AN ISOTOPIC EXAMINATION OF CAVE, SPRING AND EPIGEAN TROPHIC STRUCTURES IN MAMMOTH CAVE NATIONAL PARK

Name: Zacchaeus Greg Compson Date: October 15, 2004 Pages: 56

Directed by: Philip Lienesch, Doug McElroy, Michael Stokes and Richard Bowker

Department of Biology Western Kentucky University

Abstract

High-water events in the Green River result in flow-reversals which flush native and introduced fishes into Mammoth Cave, posing threats to indigenous cave fauna. However, little is known about the trophic interactions between cave and epigean aquatic systems or their connectivity via natural springs. The purpose of this study was to use stable isotopes of C and …


Identification Of Phosphorylase Kinase Alpha Subunit Binding Partners In Skeletal Muscle, Soleil Archila Jan 2004

Identification Of Phosphorylase Kinase Alpha Subunit Binding Partners In Skeletal Muscle, Soleil Archila

Masters Theses & Specialist Projects

IDENTIFICATION OF PHOSPHORYLASE KINASE ALPHA SUBUNIT BINDING PARTNERS IN SKELETAL MUSCLE Soleil Archila August 2004 67 Pages Directed by: Nancy A. Rice, Sigrid Jacobshagen, and Claire A. Rinehart Department of Biology Western Kentucky University Phosphorylase kinase (PhK) integrates neural, hormonal, and metabolic signals in skeletal muscle to tightly regulate glycogen breakdown and energy production. Structurally, PhK is among the largest and most complex kinases known with a stoichiometry of (αβγδ)4 and a mass of 1.3x106 Da. The catalytic γ subunit is allosterically controlled through alterations in quaternary structure initiated by the regulatory α, β and δ subunits. In this study …


A Method Based On Conserved Multiple Amino Acid Properties To Predict Amino Acid Substitutions Which Maintain The Protein Structure, Avinash M. Baktula Jan 2004

A Method Based On Conserved Multiple Amino Acid Properties To Predict Amino Acid Substitutions Which Maintain The Protein Structure, Avinash M. Baktula

Masters Theses & Specialist Projects

A METHOD BASED ON CONSERVED MULTIPLE AMINO ACID PROPERTIES TO PREDICT AMINO ACID SUBSTITUTIONS WHICH MAINTAIN THE PROTEIN STRUCTURE Avinash M. Baktula September 16, 2004 1-117 Directed by: Claire A. Rinehart, Doug McElroy and Sigrid Jacobshagen Department of Biology Western Kentucky University Proteins often contain several domains, each with a distinct structure. Such domains have evolved as units that, when combined in various arrangements, produce proteins of unique structure. This study was conducted to identify amino acid substitutions that don’t change structure. Amino acid properties which were conserved in proteins with identical structures were used to predict a set of …


Teacher Perceptions Of The Impacts Of Environmental Education On The Teaching Process And On Student Learning, Angela Nicole Castelli Jan 2004

Teacher Perceptions Of The Impacts Of Environmental Education On The Teaching Process And On Student Learning, Angela Nicole Castelli

Masters Theses & Specialist Projects

TEACHER PERCEPTIONS OF THE IMPACTS OF ENVIRONMENTAL EDUCATION ON THE TEACHING PROCESS AND ON STUDENT LEARNING Angela Nicole Castelli December 2004 (48) Directed by: Terry L. Wilson, Steve L. Spencer, and Raymond A. Poff Department of Physical Education and Recreation Western Kentucky University The Mammoth Cave National Park Environmental Education Partnership (EEP) has worked with schools and teachers to provide the students with curriculum-based environmental education programs on a regular basis throughout the school year. Because of this environmental education partnership, this study addresses the following questions: What are teacher perceptions of the impacts of environmental education on student learning …


Kentucky Warbler (Vol. 79, No. 4), Kentucky Library Research Collections Nov 2003

Kentucky Warbler (Vol. 79, No. 4), Kentucky Library Research Collections

The Kentucky Warbler

No abstract provided.


The Influence Of Music On Preferred Intensity And Associated Physiological Responses, David Nuckols Nov 2003

The Influence Of Music On Preferred Intensity And Associated Physiological Responses, David Nuckols

Masters Theses & Specialist Projects

Music is a part of everyday life and has an effect on people in many different ways. Music can be as individual as the person who listens to it, and thus there are many genres for many different tastes. Music has accompanied exercise and sport for quite some time. It has been shown to have varying psychophysical effects including decreasing ratings of perceived exertion (RPE) at a given sub-max intensity, enhancing arousal control, and affective states at high and medium intensities. Also the improved synchronization of sub-maximal exercise with music may result in increased work output. The proposed ability of …


Skeletal Myosin Heavy Chain Function In Cultured Lung Myofibroblasts, Nancy A. Rice, Leslie A. Leinwand Oct 2003

Skeletal Myosin Heavy Chain Function In Cultured Lung Myofibroblasts, Nancy A. Rice, Leslie A. Leinwand

Biology Faculty Publications

Myofibroblasts are unique contractile cells with both muscle and nonmuscle properties. Typically myofibroblasts are identified by the expression of smooth muscle actin (ASMA); however some myofibroblasts also express sarcomeric proteins. In this study, we show that pulmonary myofibroblasts express three of the eight known sarcomeric myosin heavy chains (MyHCs) (IIa, IId, and embryonic) and that skeletal muscle myosin enzymatic activity is required for pulmonary myofibroblast contractility. Furthermore, inhibition of skeletal myosin activity and myofibroblast contraction results in a decrease in both ASMA and skeletal MyHC promoter activity and ASMA protein expression, suggesting a potential coupling of skeletal myosin activity and …


Ua66/1/5 Applied Research & Technology Program Newsletter, Issue 2, Wku Applied Research & Technology Program Oct 2003

Ua66/1/5 Applied Research & Technology Program Newsletter, Issue 2, Wku Applied Research & Technology Program

WKU Administration Documents

Newsletter created by and about the Applied Research & Technology Program.


Ua66/5 Newsletter, Wku Agriculture Oct 2003

Ua66/5 Newsletter, Wku Agriculture

WKU Administration Documents

Newsletter created by WKU Agriculture Department re: faculty/staff, students/alumni, student organizations and clubs and donors.


Ua66/1/5 Applied Research & Technology Program Newsletter, Issue 1, Wku Applied Research & Technology Program Sep 2003

Ua66/1/5 Applied Research & Technology Program Newsletter, Issue 1, Wku Applied Research & Technology Program

WKU Administration Documents

Newsletter created by and about the Applied Research & Technology Program.


Kentucky Warbler (Vol. 79, No. 3), Kentucky Library Research Collections Aug 2003

Kentucky Warbler (Vol. 79, No. 3), Kentucky Library Research Collections

The Kentucky Warbler

No abstract provided.


Predicting Student Success In The Introduction To Animal Science Course At Western Kentucky University, Margaret Zoglmann Aug 2003

Predicting Student Success In The Introduction To Animal Science Course At Western Kentucky University, Margaret Zoglmann

Masters Theses & Specialist Projects

Student predictors may be useful to universities in determining students' future success in college courses. The students enrolled in Introduction to Animal Science (ANSC 140) at Western Kentucky University participated in the study. The students completed identical subjective and objective assessments at the beginning and the end of the semester they were enrolled in the course. Students ranked their knowledge of course matter on a scale of 1 to 100 for each of the 49 course outcomes. Additionally, students completed a demographic survey at the beginning of the course. The final student knowledge assessment tool was a 50 question multiple-choice …


Efficacy Of Herbicide Combination On Burley And Dark-Air Cured Tobacco, Joanna Coles Aug 2003

Efficacy Of Herbicide Combination On Burley And Dark-Air Cured Tobacco, Joanna Coles

Masters Theses & Specialist Projects

The efficacy of herbicide combination on burley and dark air-cured tobacco Nictotiana tabacum were tested in field research plots in the summer of 2000 at Western Kentucky University's Agricultural Research and Education Complex. The randomized complete block design contained six treatments replicated three times in each of the two experiments (burley and dark air-cured tobacco). Transplants (cv. 'TN 97' and cv. 'KY 160') were established on June 2, 2000 in a conventionally tilled Pembroke silt loam soil with a pH of 6.5 and organic matter content of 12 g/kg. Herbicide treatments were applied on June 1, 2000 with a CO2 …


Acute Cardiovascular Response And Perception Of Effort Between The Super Slow And Gold Standard Resistance Training Protocols, Phillip Wickwire Jul 2003

Acute Cardiovascular Response And Perception Of Effort Between The Super Slow And Gold Standard Resistance Training Protocols, Phillip Wickwire

Masters Theses & Specialist Projects

Super Slow training was proposed by Ken Hutchins in a book entitled Super Slow: The Ultimate Exercise Protocol (1992). Since then Super Slow training has been proposed to improve strength more effectively than traditional resistance training and improve cardiovascular measures above aerobic exercise. However, whether this type of training is safe for the older, possibly hypertensive population to which it is being targeted is questionable. To help provide an answer to this question the purpose of this study was to measure blood pressure, heart rate (HR), and ratings of perceived exertion (RPE) while performing the Super Slow resistance training protocol …