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Full-Text Articles in Life Sciences

Recent Decline Of Lowland Populations Of The Western Gray Squirrel In The Los Angeles Area Of Southern California, Daniel S. Cooper, Alan Muchlinski Jul 2105

Recent Decline Of Lowland Populations Of The Western Gray Squirrel In The Los Angeles Area Of Southern California, Daniel S. Cooper, Alan Muchlinski

Bulletin of the Southern California Academy of Sciences

We provide an overview of the distribution of lowland and otherwise isolated populations of the western gray squirrel (Sciurus griseus) in the Los Angeles area of southern California, an area that has experienced a recent and ongoing invasion by the non-native eastern fox squirrel (Sciurus niger), an urban-adapted species introduced a century ago. Away from its strongholds in the western Santa Monica Mountains, San Gabriel Mountains, and Santa Ana Mountains, the western gray squirrel is resident locally in both the Santa Susana and the Verdugo Mountains, in Griffith Park, in low hills at the eastern periphery of the San Gabriel ...


An Orange Fluorescent Protein Tagging System For Real-Time Pollen Tracking, J. Rice, R. Mundell, R. Millwood, O. Chambers, L. Abercrombie, H. Davies, C. Stewart Dec 2102

An Orange Fluorescent Protein Tagging System For Real-Time Pollen Tracking, J. Rice, R. Mundell, R. Millwood, O. Chambers, L. Abercrombie, H. Davies, C. Stewart

C. Neal Stewart Jr.

Background Monitoring gene flow could be important for future transgenic crops, such as those producing plant-made-pharmaceuticals (PMPs) in open field production. A Nicotiana hybrid (Nicotiana. tabacum × Nicotiana glauca) shows limited male fertility and could be used as a bioconfined PMP platform. Effective assessment of gene flow from these plants is augmented with methods that utilize fluorescent proteins for transgenic pollen identification. Results We report the generation of a pollen tagging system utilizing an orange fluorescent protein to monitor pollen flow and as a visual assessment of transgene zygosity of the parent plant. This system was created to generate a tagged ...


Effect Of External Energy On The Atomic, Crystalline, And Powder Characteristics Of Antimony And Bismuth Powders, Mahendra Kumar Trivedi Sep 2099

Effect Of External Energy On The Atomic, Crystalline, And Powder Characteristics Of Antimony And Bismuth Powders, Mahendra Kumar Trivedi

Mahendra Kumar Trivedi

Next to atoms and molecules the powders are the smallest state of matter available in high purities and large quantities. The effect of any external energy on the shape, morphology and structure can thus be studied with relative ease. The present investigation deals with the effect of a non-contact external energy on the powders of antimony and bismuth. The characteristics of powders treated by external energy are compared with the as received powders (control). The average particle sizes, d50 and d99, the sizes below which 99% of the particles are present showed significant increase and decrease indicating that the energy ...


Effects Of Slope Upon Hind Limb Kinematics In Chukar Partridge (Alectoris Chukar), Anna T. Kenney Jan 2020

Effects Of Slope Upon Hind Limb Kinematics In Chukar Partridge (Alectoris Chukar), Anna T. Kenney

Undergraduate Theses and Professional Papers

Ground dwelling birds must scale all kinds of complex terrain in order to survive in their natural environments. For instance, Alectoris chukar live on steep hillsides with slopes of up to 60° or 172.3% slope. We undertook the present study to improve understanding of how birds successfully traverse such complex terrain. Using a high speed camera, we analyzed the hind limb kinematics of chukars during normal locomotion on a 10° and 35° incline, decline, and level slope. We compared the data collected from the video recordings, which we had used to identify and digitize the bony landmarks, between all ...


Agriculture - Soil Reports Dec 2018

Agriculture - Soil Reports

Bulloch County Papers

Two soil reports of Bulloch and surrounding counties. Done by the USDA Soil Conservation Service. Help from the University of Georgia was used in the 1968 report.


The Contribution Of Local And Transport Processes To Phytoplankton Biomass Variability Over Different Timescales In The Upper James River, Virginia, Qubin Qin, Jian Shen Sep 2018

The Contribution Of Local And Transport Processes To Phytoplankton Biomass Variability Over Different Timescales In The Upper James River, Virginia, Qubin Qin, Jian Shen

Articles

Although both local processes (photosynthesis, respiration, grazing, and settling), and transport processes (advective transport and diffusive transport) significantly affect local phytoplankton dynamics, it is difficult to separate their contributions and to investigate the relative importance of each process to the local variability of phytoplankton biomass over different timescales. A method of using the transport rate is introduced to quantify the contribution of transport processes. By combining the time-varying transport rate and high-frequency observed chlorophyll a data, we can explicitly examine the impact of local and transport processes on phytoplankton biomass over a range of timescales from hourly to annually. For ...


Hosting The Third Annual Young Women In Agriculture Career And Leadership Seminar, Emma E. Morris, Madyline J. Braught Jun 2018

Hosting The Third Annual Young Women In Agriculture Career And Leadership Seminar, Emma E. Morris, Madyline J. Braught

Agricultural Education and Communication

Agriculture has traditionally been a male-dominated industry; however, recent years have shown a significant growth in female presence. Women are beginning to take leadership roles both on the farm and within advocacy, lobbying, and business entities in the industry. According to the latest agricultural census data from the United States Department of Agriculture (USDA), in 2012, women farmers controlled seven percent of the nation’s farmland (Census, 2014). Additionally, women held leadership roles in 14 percent of the nation’s two million farms (Census, 2014). This data is several years old, and likely the numbers have grown since the last ...


Evaluation Of Annagnps For Simulating The Inundation Of Drained And Farmed Potholes In The Prairie Pothole Region Of Iowa, Pawan Upadhyaya, L. O. S. Pruski, Amy Kaleita, Michelle L. Soupir May 2018

Evaluation Of Annagnps For Simulating The Inundation Of Drained And Farmed Potholes In The Prairie Pothole Region Of Iowa, Pawan Upadhyaya, L. O. S. Pruski, Amy Kaleita, Michelle L. Soupir

Agricultural and Biosystems Engineering Publications

Closed surface depressions, also known as “potholes” play an important role in the hydrologic cycle and provide multiple environmental services including flood mitigation, water quality improvements and wildlife habitat. In the Prairie Pothole Region, which covers approximately 715,000 km2, including parts of three Canadian provinces (Saskatchewan, Manitoba, and Alberta) and five states in the U.S. (Minnesota, Iowa, North and South Dakota, and Montana), these potholes are typically farmed and are a dominant feature in the landscape. In this study, we evaluate the Annualized Agriculture Non-Point Source (AnnAGNPS) model for simulating the inundation behavior of two farmed potholes, termed ...


Paul Johnsgard: Comprehensive Vita And Bibliography, Paul A. Johnsgard May 2018

Paul Johnsgard: Comprehensive Vita And Bibliography, Paul A. Johnsgard

Papers in Ornithology

A current curriculum vitae and comprehensive bibliography for Paul A. Johnsgard, Foundation Regents Professor Emeritus at University of Nebraska-Lincoln. Dr. Johnsgard has been the author of (at least) 83 books, 140 journal articles or chapters, 100 reviews or popular articles; the subject of 7 profile articles; and the director for 12 Ph.D. dissertations and 12 M.S. theses—all listed here. Dates covered are 1953 through 2018. Dr. Johnsgard is also an illustrator and photographer.

Updated March 2018.


What’S At Steak? The Political Discourse Of Emissions Intensity And Implications Of Animal Agriculture, Kalyn Simon May 2018

What’S At Steak? The Political Discourse Of Emissions Intensity And Implications Of Animal Agriculture, Kalyn Simon

Master's Theses

This thesis analyzes the international discourse of greenhouse gas emissions in relation to livestock production. Specific government ministries, research institutes, and multilateral organizations are framing a new strategy to mitigate emissions by using emissions intensity metrics. Emissions intensity is a ratio comparing emissions produced per unit of animal product as oppose to measuring absolute emissions. This research is acknowledged as a win-win scenario which allows for a reduction of greenhouse gas emissions while continuing production more efficiently. This thesis outlines the emergence of this metric in international discourse and the implications this shift has on the livestock sector globally. Ultimately ...


Evaluation Of Bacillus Strains For Plant Growth-Promotion Potentials On Corn (Zea Mays), Wheat (Triticum Aestivum), And Soybean (Glycine Max)., Rufus John Akinrinlola May 2018

Evaluation Of Bacillus Strains For Plant Growth-Promotion Potentials On Corn (Zea Mays), Wheat (Triticum Aestivum), And Soybean (Glycine Max)., Rufus John Akinrinlola

Theses, Dissertations, and Student Research in Agronomy and Horticulture

Plant growth-promoting rhizobacteria (PGPR) can increase plant growth and yield by facilitating nutrient availability, hormone production, and inhibiting plant deleterious microorganisms. Twelve strains of bacillus (endospore-forming bacteria belonging to the genera Bacillus, Paenibacillus and Lysinibacillus) isolated from wheat rhizospheres were assessed for plant-growth promotion attributes in greenhouse and laboratory experiments. The objectives were to assess each strain’s potential to promote growth in corn, wheat, and soybean; and to determine whether the physiological traits expressed in vitro by the strains related to their effectiveness in promoting plant growth. Greenhouse experiments to assess growth-promotion potential were conducted by applying the strains ...


Pkm2 Influences The Metabolic Fate Of Butyrate In Colorectal Cancer Cells, Megan Louise Pence May 2018

Pkm2 Influences The Metabolic Fate Of Butyrate In Colorectal Cancer Cells, Megan Louise Pence

University of Tennessee Honors Thesis Projects

No abstract provided.


Interventions For Afterschool Programs To Decrease The Likelihood Of Childhood Obesity, Anna R. Boyd, Lauren E. Hendricks, Elexus T. Morton, Kayleigh S. Phillips, Corie Vanarsdale, Msn May 2018

Interventions For Afterschool Programs To Decrease The Likelihood Of Childhood Obesity, Anna R. Boyd, Lauren E. Hendricks, Elexus T. Morton, Kayleigh S. Phillips, Corie Vanarsdale, Msn

Nursing Undergraduate Work

This systematic research review (SRR) looked at the epidemic of childhood obesity and subsequent complications. Afterschool programs (ASPs) were targeted as a key area where children spend many hours each day and, therefore, an ideal place for obesity interventions. The purpose of this SRR was to search the current benefits ASPs can have on decreasing the risk and prevalence of childhood obesity and to answer the research question, "What are nursing interventions within ASPs that decrease the risk of obesity in children in the United States of America?" Childhood obesity influences nurses in many areas, including inpatient hospitals, schools, and ...


A Systematic Review: Infant And Maternal Mortality And Morbidity In Developing Countries, Michayla Evans, Jamie Jeemon, Christiana Strysko, Lauren Toole, Patricia Catts, Rn, Phd May 2018

A Systematic Review: Infant And Maternal Mortality And Morbidity In Developing Countries, Michayla Evans, Jamie Jeemon, Christiana Strysko, Lauren Toole, Patricia Catts, Rn, Phd

Nursing Undergraduate Work

Maternal and infant morbidity and mortality rates are high within developing nations. The World Health Organization reports 800 women die daily due to pregnancy and labor complications (Maternal mortality, 2016). These complications are related to a wide variety of perinatal problems including preeclampsia and prolonged labor. Infant morbidity and mortality is related to infections, asphyxia, and low birthweight (Newborns: reducing mortality, 2016). The purpose of this systematic review was to research current literature to answer the question: “What are the nursing interventions to decrease maternal and infant morbidity and mortality in developing countries?”. This systematic research review included a sample ...


Condition-Dependent Life History Strategies, Shivani V. Jadeja May 2018

Condition-Dependent Life History Strategies, Shivani V. Jadeja

Dissertations and Theses in Biological Sciences

Many organisms evolve condition-dependent life history strategies to maximize their lifetime fitness in response to intrinsic and extrinsic processes. I investigated a sequentially flowering plant’s strategy to allocate resources to retain flowers versus grow existing basal fruits to a larger size, using the plant Yucca glauca. The sink strength hypothesis suggests basal fruits are nutrient sinks depriving distal flowers of resources and reducing their probability of retention. A low probability of retention of distal flowers can also be explained by the architectural effects hypothesis. This hypothesis posits inherent positional differences in structures along an inflorescence such as flower size ...


The Influence Of Multiyear Drought-Driven Habitat Loss On The Bear Lake Sculpin (Cottus Extensus) And The Bear Lake Strain Of The Bonneville Cutthroat Trout (Oncorhynchus Clarkii Utah), Hayley C. Glassic May 2018

The Influence Of Multiyear Drought-Driven Habitat Loss On The Bear Lake Sculpin (Cottus Extensus) And The Bear Lake Strain Of The Bonneville Cutthroat Trout (Oncorhynchus Clarkii Utah), Hayley C. Glassic

All Graduate Theses and Dissertations

Multiyear drought is expected to increase in occurrence and severity in dry regions across the world, such as the American Southwest, endangering native species and ecosystem health. The effects of multiyear drought are often worsened by human water use for consumption, energy production, and agriculture, which, in lakes and reservoirs, cause reduced lake elevation. Reductions in lake elevation may leave previously submerged habitat stranded along shorelines and make tributaries inaccessible to fishes. Here, we show that decreasing lake elevation, associated with drought and water withdrawal, reduces the availability of shoreline cobble habitat to fishes and increases tributary distance by creating ...


Factors Impacting Bone Mineral Density (Bmd) Results Of Individuals With Intellectual And Developmental Disabilities (Idd), Rhonda Mcnabb May 2018

Factors Impacting Bone Mineral Density (Bmd) Results Of Individuals With Intellectual And Developmental Disabilities (Idd), Rhonda Mcnabb

Electronic Theses and Dissertations

Individuals with intellectual and developmental disabilities (IDD) are prone to certain diseases in their lifetime, such as osteoporosis. Absorption of calcium is essential to maintaining good bone health and preventing osteoporosis. This study examined primary care providers’ (PCPs) choice of calcium supplementation, as well as type of calcium supplementation, and the relationship between variables in the IDD population. Ten PCPs were asked to complete a 14-question web-based survey, with five surveys completed. Calcium citrate was the preferred supplement among respondents at 50%. Retrospective data was collected from patient records and included type of calcium supplement prescribed, bone density test results ...


The Relationship Between Adult Caregiver Health Literacy And Child Body Mass Index Outcomes In A Childhood Obesity Intervention Program, Natalie Renee Cross May 2018

The Relationship Between Adult Caregiver Health Literacy And Child Body Mass Index Outcomes In A Childhood Obesity Intervention Program, Natalie Renee Cross

University of Tennessee Honors Thesis Projects

No abstract provided.


Evaluation Of Single Vs. Pair Housing Holstein Calves On Specific Antibody Concentrations To Klh, Chaney K. Morgan May 2018

Evaluation Of Single Vs. Pair Housing Holstein Calves On Specific Antibody Concentrations To Klh, Chaney K. Morgan

University of Tennessee Honors Thesis Projects

No abstract provided.


Success Rates Of Second Semester Anatomy Students In Online And On-Ground Classes At A Community College In East Tennessee, William Sproat May 2018

Success Rates Of Second Semester Anatomy Students In Online And On-Ground Classes At A Community College In East Tennessee, William Sproat

Electronic Theses and Dissertations

Educators expect the number of institutions offering online courses and the number of students enrolling in these courses to increase as many students, particularly nontraditional students, discover the advantages of online content delivery. Online courses require new methods of communication between students and faculty as well as discovering new ways to build relationships, earn student trust, conduct appropriate assessment, and deliver useful course content. Many institutions—public, private, and for-profit—offer a wide variety of online coursework but faculty, employers, and the public have expressed concerns about the quality of online course content. In particular, online delivery of coursework in ...


Pleiotropic Activity Of Systemically Delivered Angiogenin In The Sod1, Martin Crivello, Saidhbhe L. O'Riordan, Ina Woods, Sarah Cannon, Luise Halang, Karen S. Coughlan, Marion C. Hogg, Sebastian A. Lewandowski, Jochen Hm Prehn May 2018

Pleiotropic Activity Of Systemically Delivered Angiogenin In The Sod1, Martin Crivello, Saidhbhe L. O'Riordan, Ina Woods, Sarah Cannon, Luise Halang, Karen S. Coughlan, Marion C. Hogg, Sebastian A. Lewandowski, Jochen Hm Prehn

Physiology and Medical Physics Articles

Loss-of-function mutations in the angiogenin (ANG) gene have been identified in familial and sporadic ALS patients. Previous work from our group identified human ANG (huANG) to protect motoneuronsin vitro, and provided proof-of-concept that daily intraperitoneal (i.p.) huANG injections post-symptom onset increased lifespan and delayed disease progression in SOD1G93A mice. huANG's mechanism of action remains less well understood. Here, we implemented a preclinical in vivo design to validate our previous results, provide pharmacokinetic and protein distribution data after systemic administration, and explore potential pleiotropic activities of huANG in vivo. SOD1G93A mice (n = 45) and non-transgenic controls (n = 31 ...


Microbiome Of Commercial Broilers Through Evisceration And Immersion Chilling, John A. Handley May 2018

Microbiome Of Commercial Broilers Through Evisceration And Immersion Chilling, John A. Handley

Theses and Dissertations

The United States poultry industry generated 38.6 billion pounds (17,500 metric ton) of meat in 2014 which averaged to 121 pounds (55 kg) per individual of the U.S that same year. Of that meat generated by the poultry industry, an estimated 1 million cases of Salmonellosis will occur. Out of the 1 million cases approximately 40, 000 to 50,000 will be confirmed cases by the CDC. Recently, the USDA has requested changes in the inspection process and are currently allowing processors more freedom to utilize innovation to drive the increase in safer and more desirable foods ...


Modelling The Influence Of Crop Density And Weather Conditions On Field Drying Characteristics Of Switchgrass And Maize Stover Using Random Forest, Amit Khanchi, Stuart J. Birrell, Robert B. Mitchell May 2018

Modelling The Influence Of Crop Density And Weather Conditions On Field Drying Characteristics Of Switchgrass And Maize Stover Using Random Forest, Amit Khanchi, Stuart J. Birrell, Robert B. Mitchell

Agricultural and Biosystems Engineering Publications

Field drying trials were conducted using both field baskets as well as grab sampling techniques to study drying behaviour of switchgrass and maize (corn) stover (CS). Environmental conditions such as hourly solar radiation, vapour pressure deficit (VPD), average wind speed, rainfall amount, harvesting method, and field operations such as swath density were used as variables for model development. A powerful classification-based algorithm, which uses a collection of decision trees called random forest (RF) was utilised to predict moisture content (MC) of switchgrass and CS on wet basis. RF predicted the MC of switchgrass and CS with a coefficient of determination ...


Soil Properties That Influence The Occurrence Of Hydrogen Sulfide Toxicity In Rice Fields, Julia Marie Fryer May 2018

Soil Properties That Influence The Occurrence Of Hydrogen Sulfide Toxicity In Rice Fields, Julia Marie Fryer

Theses and Dissertations

Rice (Oryza sativa L.) producers face many challenges throughout each growing season. Hydrogen sulfide (H2S) toxicity is a physiological disorder where sulfate (SO42-) is excessively reduced to the toxic gas, H2S. This can reduce yield and, in severe cases, result in crop death. The main research objectives were to: i) understand chemical and physical characteristics in soils prone to H2S toxicity, ii) determine influential soil characteristics on the incidence of H2S toxicity, iii) determine ammonium sulfate ((NH4)2SO4) fertilizer additions influence on H2S toxicity, and iv) predict when and where H2S will occur. Three greenhouse experiments were conducted using Arkansas ...


Diel Rhythmicity Found In Behavior But Not Biogenic Amine Levels In The Funnel-Web Spider Agelenopsis Pennsylvanica (Araneae, Agelenidae), Alexander E. Demarco May 2018

Diel Rhythmicity Found In Behavior But Not Biogenic Amine Levels In The Funnel-Web Spider Agelenopsis Pennsylvanica (Araneae, Agelenidae), Alexander E. Demarco

Electronic Theses and Dissertations

Quantifying individual differences in behavior and the extent that behavior is influenced by circadian control is of paramount importance in behavioral ecology. In addition, the proximate mechanisms underlying behavior are also critical in order to obtain a more complete picture of how behavior evolves. Biogenic amines (BAs) are simple nitrogenous compounds derived from amino acids and have been consistently and extensively linked to behavior. For this study, we analyzed temporal patterns of BAs in relation to the antipredator (boldness) and aggressive behavior in female Agelenopsis pennsylvanica, a funnel-web spider. Using HPLC-ED, we compared behavioral responses to temporal patterns of octopamine ...


Effect Of A Skating Unit On Fitness In Fifth Grade Students, Eric Lange May 2018

Effect Of A Skating Unit On Fitness In Fifth Grade Students, Eric Lange

Theses and Dissertations

The purpose of this quantitative study investigates the effect of a skating unit on factors of cardiovascular fitness, static balance, explosive power, and agility in fifth graders. Methods: During a 6-weeks skating unit (twelve lesson), seventy-one students (ages 10-12; M age = 10.34) participated during regularly scheduled physical education classes. Three separate classes served as control group (C) (n=19; 8 male; 11 female) and two experimental groups: roller skating (RS) (n=26; 11 male; 15 female) and inline skating (IS) (n=26; 10 male; 16 female). Control group had no access to roller or inline skates during class time ...


Managing For Multiple Objectives In Southwestern Forests: Evaluating The Trade-Offs Between Enhancing Mexican Spotted Owl Nest Habitat And Mitigating Potential Crown Fire, Daniel C. Deane Mckenna May 2018

Managing For Multiple Objectives In Southwestern Forests: Evaluating The Trade-Offs Between Enhancing Mexican Spotted Owl Nest Habitat And Mitigating Potential Crown Fire, Daniel C. Deane Mckenna

All Graduate Theses and Dissertations

The Forest Inventory and Analysis (FIA), the United States’ forest census, measured sixty-six Mexican spotted owl nest stands in order gain insight into the structure and composition of the nest habitat of this threatened species. I used these data, along with the greater FIA database and the Forest Vegetation Simulator to explore questions surrounding the management of Mexican spotted owl habitat, specifically how to balance the objective of sustaining and enhancing nest habitat in face of increasing forest fire size and severity in the Southwest. My research consisted of three studies. The first study quantified the structure and composition of ...


Pruning Strategies For High Density ‘Montmorency' Tart Cherry, Sheriden M. Hansen May 2018

Pruning Strategies For High Density ‘Montmorency' Tart Cherry, Sheriden M. Hansen

All Graduate Theses and Dissertations

The tart cherry (Prunus cerasus) is the most significant fruit tree crop in Utah, accounting for roughly 51% of the total statewide commercial fruit acreage. In order to accommodate harvesting equipment, tart cherries are grown in conventional orchards with large trees spaced up to 5.5 meters apart. New methods of harvest are adapted to smaller trees in tighter spaced high density (HD) orchards. HD orchards bear fruit earlier in the orchard life than conventional orchards, but likely require different pruning and management strategies, which have not yet been determined for tart cherry. Experimental HD orchards were used to determine ...


Bovine Mastitis Resistance: Novel Quantitative Trait Loci And The Role Of Bovine Mammary Epithelial Cells, Jacqueline P. Kurz May 2018

Bovine Mastitis Resistance: Novel Quantitative Trait Loci And The Role Of Bovine Mammary Epithelial Cells, Jacqueline P. Kurz

All Graduate Theses and Dissertations

Bovine mastitis, or inflammation of the mammary gland, has substantial economic and animal welfare implications. A genetic basis for mastitis resistance traits is recognized and can be used to guide selective breeding programs. The discovery of regions of the genome associated with mastitis resistance, and knowledge of the underlying molecular mechanisms responsible, can facilitate development of efficient mastitis control and therapeutic strategies. The objectives of this dissertation research were to identify sites of genetic variation associated with mastitis resistance, and to define the contributions of the milk-secreting epithelial cells to mammary gland immune responses and mastitis resistance. Twenty seven regions ...


Effect Of High Intensity Ultrasound On The Crystallization Behavior Of Interesterified Fats, Jeta Vijay Kadamne May 2018

Effect Of High Intensity Ultrasound On The Crystallization Behavior Of Interesterified Fats, Jeta Vijay Kadamne

All Graduate Theses and Dissertations

The process of partial hydrogenation produces trans fats and the fats that undergo this process are called partially hydrogenated fats (PHF). Clinical studies have shown a strong association between PHF and coronary heart diseases. In 2015 The U.S. Food and Drug Administration removed the Generally recognized as safe or "GRAS" status of PHF. These fats were used in confectionary, margarines, shortenings, doughnuts, cookies, cakes, etc. The PHF serve a function in food by providing a higher shelf life and a desired harder structure due to their higher melting point. Hence, the food industry is currently looking for PHF alternatives ...