Digital Commons Network^™

Redesign, Field-Testing, And Validation Of The Physical Activity Campus Environmental Supports (Paces) Audit, Tanya M. Horacek Phd, Rd, Elif Dede Yildirim, Dean Seidman, Carol Byrd-Bredbenner, Sarah Colby, Adrienne A. White, Karla P. Shelnutt, Melissa D. Olfert, Anne E. Mathews, Kristin Riggsbee, Lisa Franzen-Castle, Jesse Stabile Morrell, Kendra Kattelmann

Department of Nutrition and Health Sciences: Faculty Publications

+is paper describes the redesign, field-testing, and convergent validity of a practical tool—Physical Activity Campus Environmental Supports (PACES) audit. Methods. +eaudit includes two parts: (1) PACES-Programs, which is comprised of questions regarding populations served, fees, programs (recreation/fitness classes and intramurals), proximity, adequacy of facilities, and marketing, and (2) PACES-Facilities, which is comprised of questions regarding built environment (aesthetics, bike racks, stairs, and universal design), recreation equipment, staff, amenities, and access. Each item criterion is specifically scored using a fivepoint, semantic-differential scale ranging from limited to extensive environmental support. A few questions utilize select all that apply for a summed score. …

Genome To Phenome: Improving Animal Health, Production, And Well-Being – A New Usda Blueprint For Animal Genome Research 2018–2027, Caird Rexroad, Jeffrey Vallet, Lakshmi Kumar Matukumalli, James Reecy, Derek Bickhart, Harvey Blackburn, Mark Boggess, Hans Cheng, Archie C. Clutter, Noelle Cockett, Catherine Ernst, Janet E. Fulton, John Liu, Joan Lunney, Holly Neibergs, Catherine Purcell, Timothy P. L. Smith, Tad Sonstegard, Jerry Taylor, Bhanu Telugu, Alison Van Eenennaam, Curtis P. Van Tassell, Kevin Wells

Roman L. Hruska U.S. Meat Animal Research Center: Reports

In 2008, a consortium led by the Agricultural Research Service (ARS) and the National Institute for Food and Agriculture (NIFA) published the “Blueprint for USDA Efforts in Agricultural Animal Genomics 2008–2017,” which served as a guiding document for research and funding in animal genomics. In the decade that followed, many of the goals set forth in the blueprint were accomplished. However, several other goals require further research. In addition, new topics not covered in the original blueprint, which are the result of emerging technologies, require exploration. To develop a new, updated blueprint, ARS and NIFA, along with scientists in the …

Sugarcane Straw Blanket Management Effects On Plant Growth, Development, And Yield In Southeastern Brazil, Izaias P. Lisboa, Maurício R. Cherubin, Renato P. De Lima, Maria R. Gmach, Brian J. Wienhold, Marty R. Schmer, Virginia L. Jin, Elizio F.F. Junior, Henrique P. Guerra, Carlos C. Cerri, Carlos E.P. Cerri

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

In Brazilian sugarcane (Saccharum spp.) production systems, the practice of moving harvesting residue from row to inter-row positions (i.e., raking) has increased in response to producer concerns over the potential negative effects of sugarcane straw on crop establishment and stalk yield. Despite increasing adoption among sugarcane farmers, the impacts of straw raking practices on plant growth and yield remain unclear. A 2-yr experiment that included both dry and wet seasons was conducted at two sites in southeastern Brazil to evaluate straw management strategy effects on plant tillering, phytomass accumulation, plant nutritional status, and stalk yield. The experiments were established at …

Nebline, May 2019

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

25 Years of Earth Wellness Festival: A Generation of Students Have Learned Value of Environmental Resources

Malcolm 4th Graders Learn About Healthy Choices

Recipe of the Month

2019 Cash Rent Survey

Bagworm Control in Windbreaks

Choosing the Best Bug Spray to Protect Your Family From Mosquitoes and Ticks

2019 Herb of the Year

Garden Guide Things to Do This Month

Children and Mindful Eating

Heart of 4-H Volunteer Award: Susan Martin

Babysitting Training, June 18

4-H Announcements for 4-H'ers and Volunteers

Clover College

Upcoming Landscape Workshops

Extension News: New Domestic Water and Wastewater Extension Associate

Extension News: Two New Interns …

What Are The Prospects For -Omics-Based Molecular Technologies In Cancer Diagnostics And Treatment, Katya Eriksen

Department of Environmental Studies: Undergraduate Student Theses

Cancer remains one of the leading causes of death in the United States, following the heart disease. New technologies are needed to fight and eventually to eradicate cancer. Omic technologies is a new emerging field of cancer research that may offer cancer patients long awaited opportunities to get faster, more precise personalized medical care, while letting doctors do their job more effectively. The rapid development of omic technologies and large datasets promise a new type of health care system when the patients can be treated according to their own individualized molecular characteristics.

Sustainable Dietary Solutions To A Multi-Dimensional Epidemic: A Practical Application Of The Mediterranean Diet To Nebraska, Samuel A. Virgillito

Department of Environmental Studies: Undergraduate Student Theses

There is substantial evidence to suggest the major health and environmental benefits of the Mediterranean diet. When compared to the Western Pattern diet, the Mediterranean diet consistently ranks higher by both of these measures. Considering a looming environmental crisis and an already present health epidemic, a major dietary shift and overhaul of the current food system in America is necessary. Yet few studies aim to suggest the transferability of the Mediterranean diet to regions outside of the Mediterranean basin. Nebraska offers a unique case study as it reflects the contextually poor health of Americans and boasts a massive agriculture industry …

Food Insecurity Among University Of Nebraska–Lincoln Students, Lindsey Bremer

Department of Environmental Studies: Undergraduate Student Theses

A survey of 38 University of Nebraska-Lincoln students was conducted to determine the food insecurity levels of respondents. Food insecurity is defined as limited or uncertain availability of nutritionally adequate and safe foods or limited or uncertain ability to acquire acceptable foods in socially acceptable ways (Bickel et al, 2000). A systematic review of 8 food security studies on college and university students found an average food insecurity level of 43.5%, (Nazmi et al, 2018) while the national level is 11.8% (Coleman-Jensen et al, 2017). The research was driven by the question, What is the food insecurity rate among University …

Use Of Annual Forage Mixtures In Crop/Livestock Production Systems In Nebraska, Nathan Paul Pflueger

Department of Agronomy and Horticulture: Dissertations, Theses, and Student Research

Success of integrating annual forages into crop and livestock systems throughout Nebraska may be variable depending on field location, field/forage crop management, and precipitation. There are many different warm- and cool-season annual forage species available for integrating crop and livestock systems at different times of the year. Mixtures of cereal species, such as oats (Avena sativa)) and spring peas (Pisum sativum)), are often used to optimize forage quantity and forage quality. Our two-year, three location study across Nebraska’s precipitation gradient suggested that forage quantity and quality may vary by location due to different precipitation amounts received …

Weight Status, Bullying Involvement, And Internalizing Symptomology In Adolescents: Examining A Diathesis-Stress Model, Ana Damme

College of Education and Human Sciences: Dissertations, Theses, and Student Research

Bullying is a pervasive societal issue that is consistently linked to negative outcomes that are emotionally, socially, behaviorally, and medically related. Most youth will encounter this negative life event in their childhood. The purpose of this dissertation was to use a diathesis-stress model perspective to assess the relations between the negative life event of bullying involvement, youths’ mental health, and youth weight status. Youth who have an unhealthy weight status are more likely to be involved in bullying than those with a healthy weight status (Browne, 2012; Puhl). Additionally, bullying and having an unhealthy weight status are related internalizing symptomology …

Addressing The Challenges Facing Wheat Production: Nebraska And International Breeding Efforts, Sarah Blecha

Doctor of Plant Health Program: Dissertations and Student Research

Bread wheat, Triticum aestivum L., provides 20 percent of the global daily calorie intake. It is the third most important food crop, after rice and corn. Biotic challenges significantly reduce wheat yield; chemical control can be a solution but can be cost prohibitive for subsistence farmers. For many farmers, genetic resistance to biotic stresses can be the most cost effective solution.

The International Center for Agricultural Research in the Dry Areas (ICARDA) and the Nebraska Small Grains Breeding Program have been addressing these wheat production challenges. ICARDA is part of an international research consortium to increase wheat yield and tolerance …

Science Communication In Agriculture: The Role Of The Trusted Adviser, Lee Galen Briese

Doctor of Plant Health Program: Dissertations and Student Research

Agronomy is not simply the selling of agricultural products to farmers, nor is it the process of solving singular production problems. Agronomy is defined as the integrated, holistic perspective of agriculture (ASA, 2019) and “agronomists are specialists in crop and soil sciences, as well as ecology” (ASA, 2019). While scientific investigation and discovery are essential to understanding systems function, the tangible benefits from our knowledge stems from the application to solve problems. Clear communication is vital to successfully help stakeholders understand the importance of the science and help scientists understand the challenges stakeholders face. However, to successfully put science into …

Financial Socialization And Its Effects On Food Insecurity Among College Students, Jamie Morrissey

Department of Political Science: Dissertations, Theses, and Student Research

College students are not a population the general public would consider food insecure; however, food insecurity while in college can have lasting effects that impact society as a whole. This study examines the effects of financial socialization on college students’ ability to cope with, or mitigate, food insecurity while they are pursuing their education. The methods employed to study this relationship includes a survey and simulation of real-life situations to measure how a student prioritizes their social life, finances and food, as well as how the students were financially socialized and their previous and current food insecurity status. The results …

Characterization And Evaluation Of The Probiotic Properties Of The Sporeforming Bacteria, Bacillus Coagulans Unique Is-2, Amy Garrison

Department of Food Science and Technology: Dissertations, Theses, and Student Research

Probiotics are live organisms, that when consumed in adequate amounts, confer a health benefit to the host. To achieve probiotic status, each potential strain’s functional properties and their safety to the consumer must be comprehensively evaluated. Probiotic effects have been observed to be strain specific, therefore each new strain of interest must be characterized according to their phenotypic and genetic characteristics. There is a list of characteristics that potential probiotic strains should have to be considered as a probiotic. Potential probiotic strains should be evaluated for their acid and bile salt resistance, antimicrobial activity and adherence and colonization to intestinal …

Establishment Of Perennial Legumes With An Annual Warm-Season Grass As A Companion Crop, Martina N. La Vallie

Department of Agronomy and Horticulture: Dissertations, Theses, and Student Research

The yields of perennial forage legumes are often hindered during the establishment year due to slow germination rates and weed competition. This study was conducted to determine if sorghum-sudangrass (Sorghum bicolor x S. bicolor var. sudanese) is a compatible annual companion crop for increased forage production, weed suppression, and legume establishment. In 2016, sorghum-sudangrass was paired with alfalfa (Medicago sativa L. ‘Ranger’), birdsfoot trefoil (Lotus corniculatus L.), Illinois bundleflower [Desmanthus illinoensis (Michx.) MacMill. ex B.L. Rob. & Fernald], purple prairie clover (Dalea purpurea Vent.), red clover (Trifolium pratense L.), and roundhead lespedeza (Lespedeza capitata Michx.). We studied effects of a …

Evaluation Of Protein Utilization In Low And High Protein Forage Sources And The Economic Value Of Supplementing Field Peas (Pisum Sativum) To Growing Cattle Grazing Crested Wheatgrass Pastures, Braden C. Troyer

Department of Animal Science: Dissertations, Theses, and Student Research

Field peas are widely grown in the panhandle of Nebraska; however, markets quickly become saturated. A two year experiment was conducted comparing field peas to dry distillers grains with solubles (DDGS) as a protein supplement. The objective was to establish a price producers could pay for field peas relative to DDGS. There was a significant difference in ADG due to type of supplement (P = 0.02). Field pea supplemented heifers had 10% lower ADG compared to DDGS supplemented heifers. Economically, this means if DDGS is priced at or $124.58/ 909 kg DM a producer could pay $2.89/27 kg, for …

The Utilization Of Brown Midrib Corn Silage Hybrids And Kernel Processing To Improve Corn Silage Value And The Use Of High Protein Distillers' Grains To Evaluate Starch Digestion, Lauren A. Ovinge

Department of Animal Science: Dissertations, Theses, and Student Research

Three studies evaluated the effects of corn silage hybrid, inclusion level and kernel processing in growing and finishing diets. Two more studies were conducted on high protein dried distillers' grains and its effect in finishing diets. Experiment 1 and 2 evaluated three corn silage hybrids; standard (CON; hybrid-TMF2H708), brown midrib (bm3; hybrid-F15579S2) and Unified™ brown midrib with SilaSoft™ kernel technology with a floury endosperm (bm3-soft; hybrid-F15578XT) harvested with or without kernel processing on growth and metabolism. Experiment 3 evaluated a brown midrib hybrid (bm3; hybrid-F27F627; Mycogen® Seeds) or a control (CON; hybrid-TMF2H708) in the diet …

Selective Harvest Methods And Chemical Treatment Of Baled Corn Residue For Utilization In Growing Calf And Dry Cow Diets, Ashley C. Conway

Department of Animal Science: Dissertations, Theses, and Student Research

Three studies were conducted to evaluate baled corn residue using selective harvest method and anhydrous ammonia treatments to assess utility in growing calf and dry cow diets. Baled corn residue was harvested using conventional rake-and-bale (CONV) method, or harvested using the New Holland Cornrower in which either eight rows (8ROW), or two rows (2ROW) of corn stalks were chopped into the windrow with tailings. Bales were either not treated or ammoniated at 5.5% DM. When fed to wether lambs in a mixed ration (65% residue, 30% wet corn gluten feed) to determine digestibility, the 2ROW residue had greater apparent DM, …

Hydroponics: Effect Of Ph On Different Cucumber Varieties, Mikaela Krumrei

Department of Environmental Studies: Undergraduate Student Theses

Plants are generally grown using soil as the main medium to supply the essentials necessary for growth, but as population grows and land decreases it is important to expand the knowledge of other growth mediums such as hydroponics. The purpose of this study is to provide information on hydroponic growing systems, specifically how the pH of the water effects cucumber plant growth and if different varieties of cucumber plants may have varying reactions to the pH. The hypothesis was that the plants would grow efficiently at pH of 5.0 and worst at pH of 7.5. This experiment was conducted in …

Global Reach: Use Of The Nebraska Digital Commons In Developing Regions, Andrew Cano, Paul Royster

University of Nebraska-Lincoln Libraries: Presentations

Developing countries comprise 40 percent of international downloads and 25 percent of all downloads from University of Nebraska-Lincoln’s institutional repository. This presentation will summarize the use of the Nebraska Digital Commons by representative countries in South Asia, East Asia and the Pacific, and Sub-Saharan Africa, the three regions where the most developing country downloads occurred in 2018. This summary includes the types of resources being downloaded and the types of organizations where the downloads occurred. Discussion will focus on how further research can be conducted on whether such use of the Nebraska Digital Commons by users in developing regions is …

Healthy Habits After-School Club, Taylor Schendt

Honors Program: Expanded Learning Clubs

No abstract provided.

Clinico-Neuropathological Findings In The Oldest Old From The Georgia Centenarian Study, Jirayu Tanprasertsuk, Elizabeth J. Johnson, Mary Ann Johnson, Leonard W. Poon, Peter T. Nelson, Adam Davey, Peter Martin, Aron K. Barbey, Kathryn Barger, Xiang-Dong Wang, Tammy M. Scott

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

Background: Centenarian studies are important sources for understanding of factors that contribute to longevity and healthy aging. Clinico-neuropathological finding is a key in identifying pathology and factors contributing to age-related cognitive decline and dementia in the oldest old.

Objective: To characterize the cross-sectional relationship between neuropathologies and measures of premortem cognitive performance in centenarians.

Methods: Data were acquired from 49 centenarians (≥98 years) from the Georgia Centenarian Study. Cognitive assessment from the time point closest to mortality was used (<1 year for all subjects) and scores for cognitive domains were established. Neuropathologies [cerebral atrophy, ventricular dilation, atherosclerosis, cerebral amyloid angiopathy (CAA), Lewy bodies, hippocampal sclerosis (HS), hippocampal TDP-43 proteinopathy, neuritic plaque (NP) and neurofibrillary tangle (NFT) counts, Braak staging, and National Institute on Aging-Reagan Institute (NIARI) criteria for the neuropathological diagnosis of Alzheimer’s disease (AD)] were compared among subjects with different ratings of dementia. Linear regression was applied to evaluate the association between cognitive domain scores and neuropathologies.

Results: Wide ranges of AD-type neuropathological changes were observed in both non-demented and demented subjects. Neocortical NFT and Braak staging …

Bovine Milk Extracellular Vesicles (Evs) Modification Elicits Skeletal Muscle Growth In Rats, Hailey A. Parry, C. Brooks Mobley, Petey W. Mumford, Matthew A. Romero, Cody T. Haun, Yufeng Zhang, Paul A. Roberson, Janos Zempleni, Arny A. Ferrando, Ivan J. Vechetti, John J. Mccarthy, Michael D. Roberts, Andreas N. Kavazis

Department of Nutrition and Health Sciences: Faculty Publications

The current study investigated how bovine milk extracellular vesicles (EVs) affected rotarod performance and biomarkers of skeletal muscle physiology in young, growing rats. Twenty-eight-day Fisher 344 rats were provided an AIN-93G-based diet for 4 weeks that either remained unadulterated [EVs and RNA-sufficient (ERS; n = 12)] or was sonicated [EVs and RNA-depleted (ERD; n = 12)]. Prior to (PRE) and on the last day of the intervention (POST), animals were tested for maximal rotarod performance. Following the feeding period, the gastrocnemius muscle was analyzed at the histological, biochemical, and molecular levels and was also used to measure mitochondrial function and …

Morphological Changes In American Kestrels (Falco Sparverius) At Continental Migration Sites, Teresa E. Ely, Christopher W. Briggs, Shawn E. Hawks, Gregory S. Kaltenecker, David L. Evans, Frank J. Nicoletti, Jean-François Therrien, Olin Allen, John Delong

School of Biological Sciences: Faculty Publications

Many American kestrel (Falco sparverius) populations are declining across North America. Potential causes include mortality from reduction in food availability, a changing climate, habitat degradation, an increase in avian predators, disease, and toxins. We analyzed American kestrel count and banding data from seven raptor migration sites throughout North America with at least 20 years of migration data. We used count data to determine the year at which the kestrel population began a significant decline and then used banding records to determine whether body mass and wing chord declined after this point. We found reductions in kestrel body mass at three …

Program And Proceedings: Nebraska Academy Of Sciences 1880–2019, 139th Anniversary Year, One Hundred-Twenty-Ninth Annual Meeting, April 12, 2019

Nebraska Academy of Sciences: Programs and Proceedings

Program

Aeronautics and Space Science

Collegiate Academy: Biology

Biological and Medical Sciences

Chemistry and Physics

Teaching and Learning the Dynamics of Cellular Respiration Using Interactive Computer Simulations Workshop

Life After College: Building Your Resume for the Future Workshop

Collegiate Academy: Chemistry and Physics

Aeronautics and Space Science, Poster Session

Maiben Memorial Lecture: David Swanson

Anthropology

Applied Science and Technology

Earth Science

Environmental Sciences

Teaching of Science and Math

Drumline Club, Jared Syed Noetzel, Paul Umshler

Honors Program: Expanded Learning Clubs

After-school club that teaches students the basics of music and drumming as a whole as well as learning the bucket-drumming piece entitled "Yuck!"

Leveraging Image Analysis For High-Throughput Plant Phenotyping, Sruti Das Choudhury, Ashok Samal, Tala Awada

School of Natural Resources: Faculty Publications

The complex interaction between a genotype and its environment controls the biophysical properties of a plant, manifested in observable traits, i.e., plant’s phenome, which influences resources acquisition, performance, and yield. High-throughput automated image-based plant phenotyping refers to the sensing and quantifying plant traits non-destructively by analyzing images captured at regular intervals and with precision. While phenomic research has drawn significant attention in the last decade, extracting meaningful and reliable numerical phenotypes from plant images especially by considering its individual components, e.g., leaves, stem, fruit, and flower, remains a critical bottleneck to the translation of advances of phenotyping technology into genetic …

Center For Grassland Studies, Volume 25, Issue 1, Spring 2019

Center for Grassland Studies: Newsletters

Center for Grassland Studies Celebrates 25th Year

25 Years Ago in History

Alumni Update: Brandon Peterson, NRCS District Conservationist

PGA Golf Management’s December 2018 Graduates

The Barta Brothers Ranch: Making a Difference

Stock Seed Farms Invests in Students

Dean’s List Fall 2018

America’s Grassland Conference: August 20-22

Student Spotlight: Alexa Johnson

Orval “Lynn” Myers: 1950 - 2019

PGA Golf Management Alumnus and Staff Receive Awards

Dennis Brink Retires after UNL Career Spanning 40 Years

Engineering Explorers Club, Mia P. Sharpnack, Adam D. Schneider

Honors Program: Expanded Learning Clubs

After school club that introduces students to the basics of engineering while giving them practice with teamwork and problem solving.

Creative He(Arts) Club, Lizbeth D. Chavez, Karen Martinez

Honors Program: Expanded Learning Clubs

The goal of the club is for students to explore different areas in the visual arts–including drawing, painting, printmaking, and pottery– and gain knowledge about a variety of materials and skills. By the end of club, students will have expanded their knowledge in art history and have learned about the components, elements, and principles of art. At the same time, the projects planned will allow students to apply what they learn to their own creativity and ideas.

Putting The I In Science, Naomi Kirkvold

Honors Program: Expanded Learning Clubs

This club gets kids interested in science in ways that they may not have experienced in a classroom by doing weekly experiments.