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California Polytechnic State University, San Luis Obispo

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Articles 1 - 30 of 1636

Full-Text Articles in Life Sciences

Comparative Analysis Of Body Composition And Reference Values Of Visceral Adipose Tissues In Various American Collegiate Sports, Eshan M. Dandekar Sep 2018

Comparative Analysis Of Body Composition And Reference Values Of Visceral Adipose Tissues In Various American Collegiate Sports, Eshan M. Dandekar

Master's Theses and Project Reports

Background: Currently, body composition (BC) assessment is usually performed to diagnose disease states and accurately estimate certain types of tissues. In athletes, performing BC assessments helps gauge training and nutrition programs to see if they are adequately meeting the athlete’s needs to improve performance. Annual Dual Energy X-ray Absorptiometry (DXA) scans before the start of an athlete’s season can help identify an athlete’s preparedness or health before training begins.

Objective: To assess the preseason BC of four collegiate sports: Men’s basketball, men’s baseball, women’s volleyball, and women’s soccer, for Fat Mass (FM), bone ...


An Assessment Of The Greatest Impacts On Distribution Uniformity For Drip And Micro Irrigation, Brooke Ashley Worden Sep 2018

An Assessment Of The Greatest Impacts On Distribution Uniformity For Drip And Micro Irrigation, Brooke Ashley Worden

Master's Theses and Project Reports

Using the Cal Poly Irrigation Training and Research Centers (ITRC) drip/micro evaluation program, global, or system, DUlq is computed by combining the component DUlq values of: pressure variation, uneven spacing between emitters, unequal drainage and “other” causes. “Other” causes include plugging, wear and manufacturing coefficient. The program also computes what percentage of the non-uniformity is due to each component. Burt (2004) showed that over 95% of the non-uniformity is due to “Other” causes and pressure differences. This thesis looks at what specifically in those components is driving the non-uniformity by analyzing various equipment and field practices and ...


Detecting A Probiotic Product Within The Gut Of Broiler Chickens, Anneka Pisula Aug 2018

Detecting A Probiotic Product Within The Gut Of Broiler Chickens, Anneka Pisula

Master's Theses and Project Reports

As of January 2017, the U.S. poultry industry banned the use of antibiotics and now relies on alternatives such as probiotics to help protect animal health. Although probiotic use is not a new concept in the poultry industry, identifying the best combination of bacterial strains to generate an effective probiotic formula requires further investigation. This study aimed to detect a probiotic product of four bacterial strains (Pedioccoccus acidilactici, Pediococcus pentosaceus, Lactobacillus plantarum, and Bacillus subtilis) in a feeding trial with broiler chickens. Birds given the probiotic were predicted to show an improved growth performance with the probiotics colonizing the ...


Modifying The Mineral Profile Of Crickets (Acheta Domesticus) Using A Supplemented Diet, Rhianne Morgan Le Maxwell Aug 2018

Modifying The Mineral Profile Of Crickets (Acheta Domesticus) Using A Supplemented Diet, Rhianne Morgan Le Maxwell

Master's Theses and Project Reports

Captive insectivores may consume invertebrates as all, or part of their overall diet. The challenge with feeding captive insectivores involves the limited number of invertebrate species that are commercially available, and the lack of key nutrients provided by these insects. Among these insects, a naturally occurring low concentration of calcium and an inverse calcium to phosphorus ratio may put insectivores at the risk of developing hypocalcemia. A strategy to correct this nutrient imbalance involves supplementing the insect diet with high concentrations of targeted nutrients – a term referred to as gut-loading. Current industry guidelines recommend feeding a supplemented diet for 48 ...


Assessment Of Granulovirus, Spinosad, And Mating Disruption For Controlling Cydia Pomonella L. [Lepidoptera: Tortricidae] In Organic Coastal California Apple Orchards, Raven Lukehart Aug 2018

Assessment Of Granulovirus, Spinosad, And Mating Disruption For Controlling Cydia Pomonella L. [Lepidoptera: Tortricidae] In Organic Coastal California Apple Orchards, Raven Lukehart

Master's Theses and Project Reports

Codling moth, Cydia pomonella[Lepidoptera: Tortricidae], is a major entomological pest of apples, pears, and walnuts cross the world (Pajac et al. 2016). Female codling moths lay eggs on the apple exocarp and larvae burrow within the fruit causing economic losses to fruit growers.Organic apple orchards in San Luis Obispo, CA currently have three codling moth, Cydia pomonella,control options commercially available including granulovirus (CpVG), spinosad, and mating disruption. In field tests on apple (Malus), we compare percent fruit injury between treatments of granulovirus (2.43 oz/ha Cyd-X® organically approved, Certis USA, Columbia MD), spinosad (4.05 oz ...


Evaluation Of Endothelial Cell Responses To Elevated Glucose, Gabriella Sugerman Aug 2018

Evaluation Of Endothelial Cell Responses To Elevated Glucose, Gabriella Sugerman

Master's Theses and Project Reports

Developing a tissue-engineered Blood Vessel Mimic (BVM) to represent diabetic macrovascular disease could expedite design of new vascular devices specifically tailored to diabetic patients. In contribution toward this model, this thesis assessed Human Umbilical Vein Endothelial Cell (HUVEC) responses to high glucose conditions. Interleukin 6 (IL-6) and Cluster of Differentiation 36 (CD36) were selected to signify oxidative stress activity, a hallmark of diabetic macrovascular disease. Next, activity of potential reference genes B2M, HPRT1, and ACTB was assessed. All genes were found to exceed acceptable variability, so the E-ΔC T method of data analysis was selected. Next, cellular responses to high ...


Crossing Corridors: Wildlife Use Of Jumpouts And Undercrossings Along A Highway With Wildlife Exclusion Fencing, Alex J. Jensen, Alex Joseph Jensen Aug 2018

Crossing Corridors: Wildlife Use Of Jumpouts And Undercrossings Along A Highway With Wildlife Exclusion Fencing, Alex J. Jensen, Alex Joseph Jensen

Master's Theses and Project Reports

Roads pose two central problems for wildlife: wildlife-vehicle collisions (WVCs) and habitat fragmentation. Wildlife exclusion fencing can reduce WVCs but can exacerbate fragmentation. In Chapter 1, I summarize the relevant studies addressing these two problems, with a focus on large mammals in North America. Chapters 2 and 3 summarize field assessments of technologies to reduce WVCs and maintain connectivity, specifically jumpout ramps and underpasses, along Highway 101 near San Luis Obispo, CA. In a fenced highway, some animals inevitably breach the fence and become trapped, which increases the risk of a wildlife-vehicle collision. Earthen escape ramps, or “jumpouts”, can allow ...


The Effect Of Destoning And Enzymatic Pretreatments On The Biofuel Production From Olive Cake, Patrick Tai Jul 2018

The Effect Of Destoning And Enzymatic Pretreatments On The Biofuel Production From Olive Cake, Patrick Tai

Master's Theses and Project Reports

More than 16,000 tons of olive cake was produced in the United States in 2017. Olive cake is a by-product of olive oil extraction, which has limited animal feed potential, and poses an environmental threat when landfilled due to its high organic load and polyphenol content. This residue has potential for biofuel (bioethanol and biomethane) production because it is rich in polysaccharides such as pectin, hemicellulose, and cellulose. Yet, olive cake contains olive stones that can impede its conversion to biofuel. Therefore, two methods of destoning, centrifugation and screening by horizontal screw press, were first compared. Both methods removed ...


The Future Of Strawberry Production, Audrey Rebecca Ponce Jun 2018

The Future Of Strawberry Production, Audrey Rebecca Ponce

Agricultural Education and Communication

California’s agriculture industry is greatly diverse, with strawberries as a sector that most native Californians wouldn’t recognize as a large contributor to California’s agricultural economy. Within the last couple of years, strawberry production has undergone massive changes that are rapidly modifying the way strawberries are cultivated. The future of strawberry production will have completely new methods for growing, fumigating, and harvesting in just five to ten years (Guthman, 2016). The Cal Poly Strawberry Center opened in 2014 with a mission to “increase the sustainability of the California strawberry industry through research and education that addresses industry needs ...


Preparation And Characterization Of Eva/Cort Microparticles For Rattlesnake Endocrinology Studies, Alexander C. Pauer Jun 2018

Preparation And Characterization Of Eva/Cort Microparticles For Rattlesnake Endocrinology Studies, Alexander C. Pauer

Materials Engineering

No abstract provided.


Bird Abundance At Bird Feeders In Response To Temperature, Wind Speed And Precipitation During The Winter Season, Siddhant Kahal Jun 2018

Bird Abundance At Bird Feeders In Response To Temperature, Wind Speed And Precipitation During The Winter Season, Siddhant Kahal

Master's Theses and Project Reports

The goal of this project is to explore how 23 different bird species respond to 3 climatic attributes. These attributes are lower than average temperatures, wind speed and precipitation level. Information about the bird species and all of the data associated with them is provided by Project FeederWatch (PFW). This is a citizen based survey study that provides key information about bird species abundance through the use of backyard and community feeders. The study volunteers from across the United States and Canada monitor these bird feeders and note important information about the species such as the number of individuals seen ...


Comparative Analysis Of Physiological Measurements And Environmental Metrics On Predicting Heat Stress Related Events, Mckenzie Lee Barlow Jun 2018

Comparative Analysis Of Physiological Measurements And Environmental Metrics On Predicting Heat Stress Related Events, Mckenzie Lee Barlow

Master's Theses and Project Reports

Exposure to high heat and humidity can lead to serious health risks, including heat exhaustion and heat stroke. Wet Bulb Globe Temperature (WBGT) and heat index have historically been used to predict heat stress events, but individualized factors are not included in the measurement. It has been shown that there is a relationship between cardiovascular measurements and heat stress, which could be used to measure heat stress risk on an individual level. Research has been done to find relationships between cardiovascular metrics in a workplace environment, however the study did not include the use of a controlled environment as a ...


Effect Of Bioaugmentation Product Biowish® Aqua™ On Nitrogen Removal In Wastewater, Patrick Cassidy Kalvass Jun 2018

Effect Of Bioaugmentation Product Biowish® Aqua™ On Nitrogen Removal In Wastewater, Patrick Cassidy Kalvass

Master's Theses and Project Reports

Biological nutrient removal (BNR) from wastewater, and specifically nitrogen removal, is a growing concern to wastewater dischargers such as municipalities. Excess nutrients in effluent can create problems such as eutrophication, toxicity to aquatic life, and dissolved oxygen depletion in receiving waters. BNR systems have been installed in many locations with success, but their operation presents operational and financial demands greater than conventional biological treatment. Nitrogen removal is typically performed in sequential autotrophic nitrification and denitrification, which increases needed energy input, operational complexity, and therefore cost. Simultaneous nitrification-denitrification (SNdN) achieved in a single system has also been successfully implemented, however operational ...


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 ...


Soil Science In Precision Agriculture Lesson Plan, Carson Ellis Cronkright Jun 2018

Soil Science In Precision Agriculture Lesson Plan, Carson Ellis Cronkright

Agricultural Education and Communication

Due to the increasing demands for the American agricultural industry to provide exceptional products at an increasing rate of production, as well as implement the practice of sustainable farming, it is imperative that more modern concepts be taught at a younger age (Ray, 2013). In order to inform students of advancements and the future of agriculture in the United States, curriculum and lesson plans should reflect this movement in industry in order to provide relevant information and maintain the highest quality of education possible. This project will provide a constructed lesson plan as one example of adopting more progressive methods ...


Farmers For America Documentary Screening, Tiffany Jane Thompson Apr 2018

Farmers For America Documentary Screening, Tiffany Jane Thompson

Agricultural Education and Communication

The agriculture industry is seeing a decrease in the number of beginning farms, operations that have been in existence for 10 years or less, across the United States. According to the most current Census of Agriculture by the United States Department of Agriculture (USDA), beginning farms make up approximately a quarter of the 2.1 million total farms across the country. This is a 20 percent drop between the 2007 and the 2012 censuses (2012 Census Highlights, Beginning Farmers, 2017). At the same time, the average age of the U.S. farmer is increasing and is now at 58 (Williamson ...


Malene Wines: The Beginning Of A Brand, Tyler Menane Mar 2018

Malene Wines: The Beginning Of A Brand, Tyler Menane

Agricultural Education and Communication

Malene Wines is the most recently developing brand under the Crimson Wine Group. Currently, the brand is being produced and managed under Chamisal Vineyards. Malene Wines started off with one brand of rosé wine, that has only been available for purchase in the Chamisal tasting room or wholesale. This has caused confusion for the consumer in differentiating the two brands. To help begin the separation of the two brands, Malene Wines has recently received a modified Airstream trailer to serve as a mobile tasting room.

Whereas Chamisal Vineyards is a brand focused on Chardonnay and Pinot Noir with small production ...


Cal Poly Farmers Picnic, Emily Anne Dale, Riley Nilsen, Jack Gavron Mar 2018

Cal Poly Farmers Picnic, Emily Anne Dale, Riley Nilsen, Jack Gavron

Agricultural Education and Communication

Agriculture can be seen as the world’s most essential industry. Many products people use daily come directly from agriculture, including the food placed on people’s tables. Knowing where that food comes from, and the overall importance of agricultural education is vital in the United States and the world. This message needs to be shared beyond the classroom: we need agriculture to survive.

According to the United States Department of Agriculture, “in 2012, there were 3.2 million farmers, ranchers and other agricultural managers and an estimated 757,900 agricultural workers legally employed in the U.S.” (USDA, 2012 ...


Cal Poly's Western Bonanza Junior Livestock Show Hosts First Annual Livestock Auction: The Best In The West Livestock Auction, Karl W. Montague, Tatum E. Holdener Mar 2018

Cal Poly's Western Bonanza Junior Livestock Show Hosts First Annual Livestock Auction: The Best In The West Livestock Auction, Karl W. Montague, Tatum E. Holdener

Agricultural Education and Communication

Through this senior project, the authors researched whether or not Cal Poly's Western Bonanza Junior Livestock Show's first ever livestock auction was viable. Through their research, they found the addition of a livestock show to be successful and something that should continue.


Characterization Of Botrytis Cinerea Resistance To Fungicides In California Strawberry Production, Scott D. Cosseboom Mar 2018

Characterization Of Botrytis Cinerea Resistance To Fungicides In California Strawberry Production, Scott D. Cosseboom

Master's Theses and Project Reports

Gray mold of strawberry, caused by Botrytis cinerea, is a very destructive pre- and post-harvest fruit rot. Outside of California, fungicide resistance in B. cinerea has been reported to every site-specific chemical class labeled for use against gray mold. One objective of this study was to characterize the resistance of 888 isolates of B. cinerea from California strawberry fields to ten active ingredients. Isolates were collected from the same planting block in 47 fields during the early-season (0 to 8 fungicide applications) and late-season (16 to 26 fungicide applications) of 2016. Sensitivity of each isolate was determined using the following ...


Safety Videos For Major Shop Equipment In Cal Poly Brae Lab 1, Trey Joseph Johnston Mar 2018

Safety Videos For Major Shop Equipment In Cal Poly Brae Lab 1, Trey Joseph Johnston

Agricultural Education and Communication

At California Polytechnic State University, San Luis Obispo, students from all majors can take a variety of classes in the BioResource and Agriculture Engineering Department (BRAE). It is essential for future high school mechanics educators to learn the basic shop tools and the importance of safety in the laboratory. In shop 1 of the BRAE Department, there are many different tools students will find in a mechanics classroom. The five main power tools are the Table Saw, Drill Press, Bench Grinder, Radial Arm Saw, and Disk/Belt Sander.

In BRAE 121 Agricultural Mechanics, students learn basic shop skills about lab ...


Converting Agricultural Lesson Plans To Be Common Core Compliant For Grades 3-5, Hattie Kaymarie Jameson, Brittany Rose Withnell Mar 2018

Converting Agricultural Lesson Plans To Be Common Core Compliant For Grades 3-5, Hattie Kaymarie Jameson, Brittany Rose Withnell

Agricultural Education and Communication

There are few Common Core approved lesson plans for teachers to incorporate into traditional science programs in California. The Farm Bureau’s Ag in the Classroom (AITC) program provides K-12 educators lesson plans with an agricultural focus. Only 13 out of 45 of the lesson plans that the California AITC website offers are Common Core approved (Learn About Ag, 2017).

Agricultural literacy is valuable to consumers, can lead to careers in agriculture, and can create a greater understanding of the world and of science for students. The agricultural lessons give students a real life relationship with what they are learning ...


Effect Of The Specific Carbohydrate Diet On The Microbiome Of A Primary Sclerosing Cholangitis And Ulcerative Colitis Patient, Alanna Dubrovsky, Christopher Kitts Feb 2018

Effect Of The Specific Carbohydrate Diet On The Microbiome Of A Primary Sclerosing Cholangitis And Ulcerative Colitis Patient, Alanna Dubrovsky, Christopher Kitts

Biological Sciences

A 20-year-old female was diagnosed with ulcerative colitis (UC) at age 14 and primary sclerosing cholangitis (PSC) at age 16. The PSC was successfully treated with high doses of oral vancomycin; however, the UC was more difficult to manage. After many drug treatments failed to treat the UC, the patient began following the specific carbohydrate diet (SCD). This report documents fecal microbiome changes resulting from following the SCD for two weeks. The DNA extracted from fecal samples was subjected to 16S rRNA gene sequencing to quantify bacterial species abundance. Not only were substantial changes in the fecal bacterial composition detectable ...


Assessment Of Maternal And Infant Outcomes Of Moderately Malnourished Pregnant Adolescents In Malawi, Alyssa Marie Friebert Feb 2018

Assessment Of Maternal And Infant Outcomes Of Moderately Malnourished Pregnant Adolescents In Malawi, Alyssa Marie Friebert

Master's Theses and Project Reports

Background: Adolescent childbearing and maternal malnutrition are common in low- and middle-income countries and are associated with increased risk for poor maternal and infant outcomes. Adolescent pregnancy compounded with moderate malnutrition exacerbates outcomes common to both individually. Supplementary foods may be a way to improve outcomes in malnourished adolescent pregnant women.

Objective: To retrospectively assess maternal and infant outcomes in moderately malnourished pregnant young adolescents (16-17 YO), older adolescents (18-19 YO), and adults (≥20 YO) in response to one of three nutritional interventions and in a pooled treatment group analysis, and to assess differences in infant outcomes by infant gender ...


Effects Of Varying Doses Of Oral Bisphenol A Consumption On Type 2 Diabetes Risk Markers In Healthy Adults, Todd Hagobian, Alyssa Bird, Sean Stanelle, Dana Williams, Andrew Schaffner, Suzanne Phelan Jan 2018

Effects Of Varying Doses Of Oral Bisphenol A Consumption On Type 2 Diabetes Risk Markers In Healthy Adults, Todd Hagobian, Alyssa Bird, Sean Stanelle, Dana Williams, Andrew Schaffner, Suzanne Phelan

Kinesiology

In animals, oral consumption of bisphenol A (BPA) alters diabetes risk markers but studies in humans are lacking. The objective of this study was to determine the effects of varying doses of oral BPA consumption on diabetes risk markers. Eleven healthy, college students (21.0 ± 0.8 yrs; 24.2 ± 3.9 kg/m2) were randomized in a double-blinded, cross-over fashion separated by >1 week to oral consumption of Placebo (PL), deuterated BPA at 4 mg/kg-BW (BPA-4), and deuterated BPA at 50 mg/kg-BW (BPA-50). Total BPA, glucose, insulin, C-Peptide, and other risk markers were assessed at baseline, minutes ...


Vineyard Age Effect On Juice Chemistry, Anthocyanins, And Total Phenolics, Eric L. Camera Dec 2017

Vineyard Age Effect On Juice Chemistry, Anthocyanins, And Total Phenolics, Eric L. Camera

Wine and Viticulture

Grapevines (cv Zinfandel) planted in the same vineyard 100 years apart were analyzed for juice chemistry and phenolic content of the fruit. The vineyard was dry farmed, and vines from the original 1890 vineyard were compared to vines inter-planted in 1990. As “old vine” wines can command higher prices in the market due to a perceived difference in fruit characteristics. This study attempted to observe if there was a measurable difference in fruit characteristics, or if it is simply an effective marketing strategy. There has been little research conducted in the wine industry attempting to observe a difference of old ...


Agricultural Communications Lesson Plans For High School Agriculture Programs, Caitlin Anne Stanton Nov 2017

Agricultural Communications Lesson Plans For High School Agriculture Programs, Caitlin Anne Stanton

Agricultural Education and Communication

In today’s workforce, individuals are expected to be able to communicate effectively through all means of communication. This includes video, graphics, emails, social media, and in person. In the agriculture industry, these means of communication have become crucial to promoting agricultural literacy throughout the world. It is important for young people to have a grasp on professionally utilizing these communication methods so that they can use them in future careers as well as advocating for the agriculture industry. The role of technology and social media is rapidly increasing in everyday life and becoming a key learning tool in secondary ...


Understanding The Transition From Benthic Egg To Dispersive Larvae: Observations On The Intra-Capsular Growth And Development Of A Marine Snail (Kelletia Kelletii), Megan N. Wilson Sep 2017

Understanding The Transition From Benthic Egg To Dispersive Larvae: Observations On The Intra-Capsular Growth And Development Of A Marine Snail (Kelletia Kelletii), Megan N. Wilson

Biological Sciences

It has long been understood that the larval life stage is responsible for the dispersion of many marine organisms across their biogeographic range. Such organisms have a bipartite life cycle, existing in the water column and subject to oceanographic processes as planktonic larvae before settling to suitable habitat along the benthos where they grow and mature. Previous studies have demonstrated that larval growth rate and behavior in the water column can alter larval position in relation to ocean currents and affects their dispersal pathway. However, there is a paucity of information regarding the growth rate of the earliest larval stage ...


Spatial And Temporal Heterogeneity Of Microbial Life In Artificial Landscapes, Roopkamal Kaur, Aditi Sengupta, Peter A. Troch Sep 2017

Spatial And Temporal Heterogeneity Of Microbial Life In Artificial Landscapes, Roopkamal Kaur, Aditi Sengupta, Peter A. Troch

STAR (STEM Teacher and Researcher) Presentations

The Landscape Evolution Observatory (LEO) project at Biosphere 2 consists of three replicated artificial landscapes which are sealed within a climate-controlled glass house. LEO is composed of basaltic soil material with low organic matter, nutrients, and microbes. The landscapes are built to resemble zero-order basins and enables researchers to observe hydrological, biological, and geochemical evolution of landscapes in a controlled environment. This study is focused on capturing microbial community dynamics in LEO soil, pre- and post-controlled rainfall episodes. Soil samples were collected from six different positions and at five depths in each of the three slopes followed by DNA extraction ...


Forest Densification Over 85 Years In A Sierra Nevada Mixed-Conifer Forest Decreases Conifer Regeneration And Limits Survival, Marissa A. Vossmer Sep 2017

Forest Densification Over 85 Years In A Sierra Nevada Mixed-Conifer Forest Decreases Conifer Regeneration And Limits Survival, Marissa A. Vossmer

Master's Theses and Project Reports

Forest densification in response to a century of fire suppression in Sierra Nevada mixed conifer forests has decreased conifer regeneration and survival. Increases in overstory biomass and decreases in canopy heterogeneity, along with decreases in shrub cover in the understory, has created unfavorable establishment site conditions for conifer species. Establishment site conditions are key in promoting germination and establishment of conifers seeds and in determining the survival of these seedlings into the overstory. These changes in establishment site suitability resulting from the removal of disturbance from these forests has decreased conifer regeneration and survival into other age classes. In Sierra ...