Digital Commons Network^™

Simulating Southern Rust Damage In Corn Through Defoliation, Michael Keith Shannon

LSU Master's Theses

The importance of leaf area to corn for grain production beginning at silking is well documented. However, being able to predict yield loss due to defoliators such as foliar plant diseases and insects that progressively increase in defoliation over time has been difficult to quantify. To address this issue, a leaf removal study was conducted at the Dean Lee Research and Extension Center located near Alexandria, Louisiana in 2017 and 2018. Two hybrids, differing in relative maturity were evaluated in this study. An early maturing hybrid (108 days in 2017 and 107 days in 2018) and a later maturing hybrid …

Louisiana Beef Cattle Marketing Strategies, Adam Barrilleaux

LSU Master's Theses

The purpose of this study was to estimate the financial costs and returns of selected marketing strategies for cattle producers in the state of Louisiana. Cattle for the project were from the Louisiana State University Agricultural Center and commercial producers. Cattle were grouped by weight and sex and vaccinated, castrated, and handled using standard best management practices. The standard marketing practice for weaned calves in Louisiana of selling weaned animals at local stockyards was compared against alternative marketing of preconditioned calves through video auctions or after feedlot finishing. Feedlot cattle were sold both on live weight value and carcass weight …

Vol.47 N.38 April 9th 2020, Voice Media Ventures

Black Voice News

No abstract provided.

Talking With Children About Covid-19, Government Of Yukon

Covid-19 Archive: Documents

A letter from the government of the Yukon to families outlining ways for them to speak to children and cope with both the medical and emotional needs of Covid-19. It offers ideas and techniques for normalizing lives and homeschooling students of different ages. It also gives descriptions of symptoms to look for, ways to teach students hygiene, and methods to prevent the spread of the virus.

Shaped Stone Balls Were Used For Bone Marrow Extraction At Lower Paleolithic Qesem Cave, Israel, Ella Assaf, Isabella Caricola, Avi Gopher, Jordi Rosell, Ruth Blasco, Oded Bar, Ezra Zilberman, Cristina Lemorini, Javier Baena, Ran Barkai, Emanuela Cristiani

KIP Articles

No abstract provided.

Characterization Of Hemicellulose Biosynthesis Genes In Avena, Melissa Coon Fogarty

Theses and Dissertations

Avena sativa L. (2n = 6x = 42, AACCDD genome composition) or common oat is the cereal grain possessing the highest levels of water-soluble seed (1-3,1-4)-β-D-glucan (β-glucan), a hemicellulose important to human health due to its ability to lower serum LDL cholesterol levels. Understanding the mechanisms of β-glucan accumulation in oat endosperm is, consequently, of great interest. We report a genome-wide association study (GWAS) to identify quantitative trait loci (QTLs) controlling β-glucan production in oat, identifying 58 significantly associated markers. Synteny with the barley (Hordeum vulgare L.) genome identified four major regions of interest, the CslF and CslH gene families …

Comparative Lipidomics Of 5-Fluorouracil-Sensitive And -Resistant Colorectal Cancer Cells Reveals Altered Sphingomyelin And Ceramide Controlled By Acid Sphingomyelinase (Smpd1)., Jae Hun Jung, Kohei Taniguchi, Hyeong Min Lee, Min Young Lee, Raju Bandu, Kazumasa Komura, Kil Yeon Lee, Yukihiro Akao, Kwang Pyo Kim

Articles, Abstracts, and Reports

5-Fluorouracil (5-FU) is a chemotherapeutic drug widely used to treat colorectal cancer. 5-FU is known to gradually lose its efficacy in treating colorectal cancer following the acquisition of resistance. We investigated the mechanism of 5-FU resistance using comprehensive lipidomic approaches. We performed lipidomic analysis on 5-FU-resistant (DLD-1/5-FU) and -sensitive (DLD-1) colorectal cancer cells using MALDI-MS and LC-MRM-MS. In particular, sphingomyelin (SM) species were significantly up-regulated in 5-FU-resistant cells in MALDI-TOF analysis. Further, we quantified sphingolipids including SM and Ceramide (Cer) using Multiple Reaction Monitoring (MRM), as they play a vital role in drug resistance. We found that 5-FU resistance in …

From The Desk Of Philip D. Hall, Pharm.D, Professor And Dean, April 9, 2020, Philip D. Hall

College of Pharmacy From the Dean's Desk

No abstract provided.

An Economic Analysis Of Smallholder Groundnut Production In Selected African Countries, Jeremy L. Jelliffe

Doctoral Dissertations

Agricultural productivity growth is a primary driver of economic development throughout the world. In Africa, productivity growth has lagged behind the rest of the world, resulting in food shortages and continued reliance on subsistence agriculture by smallholders. The challenges from climate change, population growth, and rural food insecurity, have made it all the more difficult to increase productivity in Africa. In addition, chronic poverty and limited access to resources are major hurdles to regional productivity growth. Initiatives to address these issues rely on foundational studies that are used to justify programs and policy. This dissertation takes a multi-faceted approach and …

Chanticleer | April 9, 2020, Jacksonville State University

Chanticleer

No abstract provided.

Biological Sex Influences Susceptibility To Acinetobacter Baumannii Pneumonia In Mice, Sílvia Pires, Adeline Peignier, Jeremy Seto, Davida S. Smyth, Dane Parker

Publications and Research

Acinetobacter baumannii (A. baumannii) is an extremely versatile multidrug-resistant pathogen with a very high mortality rate; therefore, it has become crucial to understand the host response during its infection. Given the importance of mice for modeling infection and their role in preclinical drug development, equal emphasis should be placed on the use of both sexes. Through our studies using a murine model of acute pneumonia with A. baumannii, we observed that female mice were more susceptible to infection. Likewise, treatment of male mice with estradiol increased their susceptibility to infection. Analysis of the airway compartment revealed enhanced inflammation and reduced …

Economic Trade-Offs Of Novel Forage Use In Livestock Production Systems: Insights From Australia, Marta Monjardino, Neil D. Macleod, Dean K. Revell

IGC Proceedings (1977-2023)

Globally, livestock are a major component of agricultural systems and natural resource management, as well as an important contributor to nutrition and livelihoods, but are often undervalued (Herrero et al., 2009). In Australia, livestock production systems occupy half of the available land and contribute to ~50% of gross agricultural production. The main livestock systems are beef cattle grazing at low intensity in the arid and semi-arid regions of northern and central Australia; and sheep flocks integrated in crop-livestock systems in the temperate zone of southern Australia (Bell et al., 2014). Despite increased physical productivity (changes in outputs relative …

Profitability Of Early Weaning Of Beef Cows At Northern Sonora, Mexico: A Rancher Experience, Salomón M. Moreno, Fernando Ibarra-Flores, Martha Martin Rivera, Maria Del Socorro Antunez Navarro, Rafael Retes Lopez, Jesus Fimbres Preciado, Agustín Cabral Martell

IGC Proceedings (1977-2023)

Amount and distribution of precipitation is normally inadequate and uncertain in arid and semiarid Sonoran Desert rangelands. Low precipitation reduces forage quality and quantity and it can negatively influence livestock yield reducing milk production and calf gains. Early removal of the calf from its dam reduces forage needs of the cow-calf enterprise and has been found to improve body weight gain and pregnancy rates in the cow herd (Mulliniks et al., 2013). Additionally, weaning calves early can result in improved animal performance by increasing pregnancy rates, cow body condition scores and increased steer carcass quality while reducing forage needs …

The Grasscutter: An Untapped Resource Of Africa’S Grasslands, E. K. Adu, A. Asafu-Adjaye, B. A. Hagan

IGC Proceedings (1977-2023)

The grasscutter (or Greater cane rat – Thryonomys swinderianus) is a common rodent in Africa, south of the Sahara. Its distribution ranges from The Gambia to southern Sudan, across the continent down to south Namibia and South Africa (Fritzinger 1995). The grasscutter grows to > 0.5 m in length and weighs ~8 kg. It has characteristic rounded ears, a short nose, coarse bristly hair, and forefeet smaller than its hind feet. Grasscutters are herbivores and their natural diet is mainly grasses and cane, but they also eat bark, fallen fruits, nuts and many different kinds of cultivated crops. Grasscutters get …

Grass-Based Health, Peter Ballerstedt

IGC Proceedings (1977-2023)

A true discussion of sustainability must focus on improving the condition of humanity. Too often, however, such a discussion is a "dialogue of values that defies consensual definition" (Ratner 2004), with participants implicitly accepting as true numerous foundational beliefs that are factually incorrect or unproven. Dietary policies recommending carbohydrate-based diets are one example. Falsehoods persist despite decades of contradictory re-search results and clinical findings, contaminating a variety of diverse disciplines and discussions. A rational, objective discussion of sustainability in grassland agriculture must confront the issue of public health policy, consider our physical health, the fiscal health of our communities, and …

Quantification Of Vitamin B12 In Two Cricket Species, Haley Smeltz

Student Scholar Showcase

Entomophagy, or the eating of insects, has been practiced in the eastern world for centuries, however it is currently overlooked in the western nations. Studies have shown that insects, such as crickets, contain high levels of protein and minerals, however vitamin content is rarely studied. This study aims to quantify the vitamin B₁₂ content in two cricket species, the common house cricket (Acheta domesticus) and the banded cricket (Gryllodes sigillatus). The vitamin B₁₂ content of both cricket species will be quantified using reverse-phase high performance liquid chromatography (RP-HPLC). Prior to RP-HPLC analysis, all the …

Estimation Of Age From The Auricular Surface Of The Ilium Through The Utilization Of 3d Scanning And Gis, Krista Bennett

LSU Master's Theses

The ability to produce age estimations for adult skeletons has been a focus of forensic anthropologists for decades. Most age estimation methods for adult remains provide age ranges that are too narrow, too broad, or too vague. This project sought to combine 3D scans with GIS to produce morphological maps of the auricular surface of the os coxa in order to identify quantifiable characteristics for age assessment that could be used for generating narrower age range estimates for older adult remains.

A NextEngine ™ HD Desktop 3D scanner was used to scan the auricular surfaces of 384 os coxae from …

The Effects Of Skeletal Muscle Specific Cpt1b Knock Out On Genetically Obese Ay Mice, Allison Stone

LSU Master's Theses

Fatty acid oxidation inhibition is one approach to reducing blood glucose levels in type II diabetes. Skeletal muscle specific Carnitine Palmitoyltransferase 1b knockout mice (Cpt1b^m-/-) cannot transport long-chain fatty acids into the mitochondria to be oxidized in order to produce energy. Cpt1b^m-/- mice have debilitated fat oxidation, less fat mass and improved glucose utilization compared to control C57BL/6 mice fed a 25% fat diet.

We hypothesized that CPT1b inhibition could reduce fat mass and lower blood glucose levels in a genetic mouse model of obesity and diabetes. To test this, we bred Cpt1b^m-/- mice to A …

Three Weeks Of Detraining Does Not Decrease Muscle Thickness, Strength Or Sport Performance In Adolescent Athletes, Simon Gavanda, Stephan Geisler, Oliver J. Quittmann, Helen Bauhaus, Thorsten Schiffer

International Journal of Exercise Science

International Journal of Exercise Science 13(6): 633-644, 2020. The purpose of this study was to examine the effects of detraining following a block (BLOCK) or daily undulating periodized (DUP) resistance training (RT) on hypertrophy, strength, and athletic performance in adolescent athletes. Twenty-one males (age = 16 ± 0.7 years; range 15-18 years) were randomly assigned to one of two 12-week intervention groups (three full-body RT sessions per week): BLOCK (n = 9); DUP (n = 12). Subsequently a three-week detraining period was applied. Body mass, fat mass (FM), fat-free mass (FFM), muscle mass, muscle thickness (rectus femoris, vastus …

Momentum During A Running Competition: A Sequential Explanatory Mixed-Methods Study, Vincent Gosselin Boucher, Sandra Pelaez, Andrée-Anne Parent, Jacques Plouffe, Alain Steve Comtois

International Journal of Exercise Science

International Journal of Exercise Science 13(5): 615-632, 2020. The purpose of this study was to better understand the psychological momentum (PM) in varsity cross-country competitive runners during a 3000 m selection trials. A sequential explanatory mixed methods design was used: recruitment trial race day (quantitative) and interview day (qualitative + maximal aerobic running speed [MARS]). Sample was consisted of fifteen university distance runners (n = six women [25.9 ± 7.0 years old; 22.2 ± 1.8 BMI] and nine men [23.2 ± 2.4 years old; 22.6 ± 1.6 BMI]). During the recruitment trial race, athletes’ MARS was measured and used …

High Supervised Resistance Training In Elderly Women: The Role Of Supervision Ratio, Denis Cesar Leite Vieira, Dahan Da Cunha Nascimento, Vitor Tajra, Tatiane Gomes Teixeira, Darlan Lopes De Farias, Ramires Tibana, Alessandro Oliveira Silva, Thiago Santos Rosa, Milton Rocha Moraes, Fabrício Azevedo Voltarelli, James W. Navalta, Jonato Prestes

International Journal of Exercise Science

International Journal of Exercise Science 13(3): 597-606, 2020. The objective of this study was to compare the effects of very high supervision (VHS-RT) versus high supervision (HS-RT) ratio resistance training (RT) on irisin, brain-derived neurotrophic factor (BNDF), muscle strength, functional capacity, and body composition in elderly women. Participants performed daily undulating periodized RT over 16 weeks with two different supervision ratios: VHS-RT at 1:2 (supervisor/subject) or HS-RT at 1:5. Serum was used to analyze brain derived neurotropic factor (BDNF) and irisin by enzyme-linked immunosorbent assay (ELISA). Body composition was evaluated by dual-energy X-ray absorptiometry, while functional capacity was evaluated using …

Acute Ultraviolet Light Exposure And Post-Resistance Exercise Serum Testosterone: A Pilot Study In Older Men, Shayan Emamjomeh, Luis E. Segura, Joshua A. Cotter, Evan E. Schick

International Journal of Exercise Science

International Journal of Exercise Science 13(2): 607-614, 2020. Testosterone deficiency is linked to a multitude of conditions including depression, sexual dysfunction, and cognitive impairment. Although synthetic testosterone-boosting pharmaceuticals have gained wide use, recent data suggests that vitamin D, ingested orally, may positively impact serum testosterone. Furthermore, evidence tying ultraviolet (UV) light exposure to endogenous vitamin D synthesis presents an intriguing possibility for naturally enhancing serum testosterone. This investigation sought to determine the effect of acute UV light exposure on resistance exercise-induced acute testosteronemia and vitamin D in older men. Six older adult men of varying activity levels (age 62 ± …

Spartan Daily, April 8, 2020, San Jose State University, School Of Journalism And Mass Communications

Spartan Daily, 2020

Volume 154, Issue 30

#Selfcare: Perspectives From Instagram, Luke Nguyen, Colin Mullis, Bailey Rydzewski, Julie Williams Merten Phd

Showcase of Osprey Advancements in Research and Scholarship (SOARS)

Background: While widely-used by clinicians, self-care has recently emerged as a trending term in mainstream and social media. Informal health and support communities have formed on social media sites such as Instagram, which hosts more than one billion monthly users and ranks as the second most popular social networking application in the United States.

Purpose: This study investigated how the term self-care is portrayed on Instagram. In particular, the researchers examined how self-care was depicted across the six dimensions of wellness and four established self-care themes including illness prevention, management of chronic illness, promotion of optimal health, and early detection …

Ways To Reduce Restaurant Industry Food Waste Costs, David Blum

International Journal of Applied Management and Technology

Food waste costs U.S. restaurant leaders billions of dollars per year. The purpose of this research was to provide restaurant leaders with processes and strategies to reduce food waste costs. The research method used was systematic literature review in addressing this research question: What processes and strategies are available to U.S. restaurant leaders to reduce food waste costs? This study addresses a gap in literature related to processes and strategies to reduce food waste costs. Six processes and seven strategies to reduce food waste costs were presented.

High Supervised Resistance Training In Elderly Women: The Role Of Supervision Ratio, Denis Cesar Leite Vieira, Dahan Da Cunha Nascimento, Vitor Tajra, Tatiane Gomes Teixeira, Darlan Lopes De Farias, Ramires Tibana, Alessandro Oliveira Silva, Thiago Santos Rosa, Milton Rocha Moraes, Fabrício Azevedo Voltarelli, James W. Navalta, Jonato Prestes

Kinesiology and Nutrition Sciences Faculty Research

The objective of this study was to compare the effects of very high supervision (VHS-RT) versus high supervision (HS-RT) ratio resistance training (RT) on irisin, brain-derived neurotrophic factor (BNDF), muscle strength, functional capacity, and body composition in elderly women. Participants performed daily undulating periodized RT over 16 weeks with two different supervision ratios: VHS-RT at 1:2 (supervisor/subject) or HS-RT at 1:5. Serum was used to analyze brain derived neurotropic factor (BDNF) and irisin by enzyme-linked immunosorbent assay (ELISA). Body composition was evaluated by dual-energy X-ray absorptiometry, while functional capacity was evaluated using the Six-minute walk test, and Timed Up and …

An Overview Of The Rd Mentorship Program, Mia Howell, Lora Chizmar, Karen Beathard, Kristen Hicks-Roof Phd

Showcase of Osprey Advancements in Research and Scholarship (SOARS)

The Academy of Nutrition and Dietetics highlights the need for more mentorship opportunities for Registered Dietitian (RDs) in their 2017 Strategic Plan. There are a limited number of published structured programs that facilitate relationships between practicing dietitians and dietetics students (DS). The purpose of the RD Mentorship Program is to determine the impact of a project-based mentoring experience on self-perceptions of mentoring and professional advancement. The RD Mentorship Program partners RDs with DS to work on specific nutrition-related projects. Partnerships are required to meet at least once per month to work on their project. After piloting the program for several …

Association Between Exposure To Polycyclic Aromatic Hydrocarbons And Stroke Among Adults In The United States, Breck Peterson

Showcase of Osprey Advancements in Research and Scholarship (SOARS)

Background: Polycyclic aromatic hydrocarbons (PAHs) are environmental pollutants released through multiple processes including manufacturing, automotive emissions, and tobacco smoking. Previous evidence has shown that exposure to PAHs is associated with diabetes, cardiovascular disease, and cancer, but the association with stroke has not specifically been examined.

Methods: The study used cross-sectional data from the 2005 to 2014 National Health and Nutrition Examination Survey (NHANES) for 8,650 subjects. Multivariable logistic regression was utilized to investigate the association between exposure to PAHs and an outcome of stroke. The exposure distribution for each PAH was divided into quintiles with the lowest level of exposure …

Apple Cider Vinegar Weight Loss Drinks On Pinterest, Sydney Chamberlain, Jana Mitchell, Davis Major, Lena Elimam, Cassandra Cleland

Showcase of Osprey Advancements in Research and Scholarship (SOARS)

Background: More than a third of adults in the U.S. are currently trying to lose weight. Social media, specifically Pinterest with more than 322 million users, has changed the way people seek health information specifically weight loss. Apple cider vinegar has shown great promise for weight loss in controlled lab settings, yet these claims are widely shared on social media and may not yield the same benefits.

Purpose: This study used directed content analysis to examine how apple cider vinegar weight loss drinks were portrayed on Pinterest, a social media website used to bookmark online content. Methods: Using the search …

Orthorexia Nervosa In College Students: Eating Disorder History, Gender, And Dieting Behaviors, Katrina Agger, Brittany Moran, Zhiping Yu Phd, Rnd, Ldn

Showcase of Osprey Advancements in Research and Scholarship (SOARS)

Objective: College students are at higher risk for the development of orthorexia nervosa (ON), a term used to describe the pathological obsession with healthy eating. This study aimed to assess how the factors of eating disorder (ED) history, gender, and dieting behaviors affect the ON in this population.

Methods: Students 18 years or older in a southeastern university were invited to take an online survey. Survey questions include Bratman Orthorexia Test (BOT), Eating Attitude Test-26 (EAT-26) and participant characteristics.

Results: 411 students (ages 18-65, BMI 15.1-55.5, female 75.2%, white 75.6%, graduate students 16.1%) have completed the survey. Comparing to students …