Digital Commons Network^™

Computer Simulation For Continuous Centrifugation Of High-Density Cell Cultures, Hironori Tomizawa

USF Tampa Graduate Theses and Dissertations

Perfusion bioreactors are used for cell production for cell therapies. The system uses cell separation devices such as centrifuge to facilitate cell growth by separating cells and spent media and allows constant media replacement. However, current cell separation technologies can increase shear stress, are generally not continuous processes, and are not as efficient as desired. These limit the amount of media replaced per unit time. Therefore, there is a need for a new system or a method that operates continuously to minimize cell damage, yield high cell concentration, and exchange media effectively. A set of research questions was formulated: (1) …

Feed Markets In The Late Dry Season Across Agro-Ecological Zones In Burkina Faso, A. Ayantunde, E. Doamba, M. Hebie, D. Sogoba, R. Same, M. Blummel

IGC Proceedings (1977-2023)

Limited access to adequate quantities of high-quality feed is a major constraint to livestock productivity in smallholder systems in the West African Sahel. As a result of the increase in the livestock population and the associated growth in the demand for feeds, feed markets have sprung up in many cities and towns in the region. However, there is little available information on price variations for different feed types across agro-ecological zones in Burkina Faso. Information on feed price and quality is essential to developing strategies to match feed supply with demand. Surveys on the price and quality of feeds at …

The Role Of Women In Rural Livestock: Which Women? Which Livestock?, Gabriela Litre, Daniela Nogueira, Alessandra Matte, Virginia Courdin

IGC Proceedings (1977-2023)

We explore the conceptual and empirical limitations of the question about “the role of women in rural livestock production” as well as the widespread assumption that women in livestock are subsistence or smallholder farmers. While this is correct in many situations, “essentialist” development discourses often disregard new demographic trends and the heterogeneity of live-stock production systems. Our research, which focuses on the livelihoods of women involved with livestock production in the Pampas’ grasslands of Brazil, proposes: 1) to critically analyse some of the most widely spread assumptions about women involved in beef livestock production, including the belief that women are …

Shift In Management Strategy Of Yak Herding In The South Of Mustang District, Nepal, Himalaya, H. Anzai, M. K. Shah, Hajime Kumagai

IGC Proceedings (1977-2023)

In the Himalayan regions of Nepal, people herd yaks (Bos grunniens) under transhumant pastoralism, seasonal migrations of herds between summer highlands and winter lowlands. For several decades, the number of yaks has decreased, and the management strategy of yak herding has been altered due to the influence of substantial changes in both the social environment and their livelihoods. We conducted field surveys on yak herding in the south of Mustang District from 2012 to 2016 to examine the recent shift in management strategy and practice. The surveys were focused on fifteen yak owners and their herdsmen who lived …

Valuing The Expertise Of Mobile Herders In Arid South Africa--A Photographic Essay, C. F. Cupido, W. Ellis, M. I. Samuels

IGC Proceedings (1977-2023)

Pastoralism has been practiced for millennia in numerous ecosystems across the world. Throughout history, pastoral systems and in particular herding have been replaced by the commercialization of livestock production, which essentially made herders redundant in many sub-Sahara countries resulting in job losses. Herding is however still practiced in many countries, but the essential role of the herder is in many instances snubbed upon and disregarded as trivial work, hence their low social standing within the community. Literature however indicates that herding does offer many benefits over commercial paddock systems e.g. improving rural livelihoods, reviving customary practice, reducing stock theft, reducing …

Challenges Of Pastoralism And Rangelands In Europe, P. Manzano

IGC Proceedings (1977-2023)

High Human Development achievements across Europe explain the situation of pastoralism in the region. While its economic importance has dwindled over the last century in terms of livelihood provision, pastoralism is nonetheless key for supporting rural population - especially in the areas of lower agricultural potential - and for delivering ecosystem services in vast areas. The mainstreaming of scientific research means that pastoralism is increasingly recognized as a sustainable livelihood by the European general public. In spite of this better press, the advanced average age of European pastoralists and the increased gender imbalances pose great sustainability risks in the short- …

Priority Themes And Issues For The International Year Of Rangelands And Pastoralists, Maryam Niamir-Fuller, James T. O’Rourke, Barbara Hutchinson

IGC Proceedings (1977-2023)

The objective of the International Year of Rangelands and Pastoralism (IYRP) is to increase world-wide awareness and recognition of the value and contributions of rangelands and pastoralists. The aim is to influence country policies, legislation, and programs; and to encourage development, research, extension and educational initiatives that will lead to sustainability of rangelands and pastoral/livestock systems. Although each country should decide on how they would celebrate the IYRP, the adoption of a global framework of 12 monthly themes will help to a) provide suggestions and ideas, b) highlight urgent and topical issues, and c) show how pastoralism and rangelands across …

Priority Areas For Action And Research On Pastoralism And Rangelands In Eastern Africa, M. O. Odhiambo

IGC Proceedings (1977-2023)

There is an element of irony around pastoralism and research in Eastern Africa. While it is one of the most researched production and livelihood systems, pastoralism is also the least understood by policymakers and development actors, with discussions about its importance characterized by significant gaps in knowledge. What is more, policy actors have difficulties accessing empirical data specific to pastoralism and rangelands in a form that allows well-founded decision-making on policy and action. Most available data tend to be out of date and not disaggregated with reference to pastoralism and rangelands. As a result, much of the discourse around pastoralism …

Interplays Between Policy And Practice On Rangelands In Kazakhstan Since The 1990s, C. Kerven

IGC Proceedings (1977-2023)

Kazakhstan contains a large share of the world’s remaining “near-natural” temperate grassland, so how the Kazakh rangelands are managed has global implications for plant and animal biodiversity, carbon stocks, and at a national level for the wellbeing of Kazakhstan’s land, people and the economy.

The extensive livestock and rangeland management systems of Kazakhstan were transformed after the early 1990s. Privatisation had deep and very damaging structural impacts. There are now considerable inequities in the distribution of state support, landed resources and livestock, with the appearance of a minority of large-scale livestock owners. Government policies allowed these livestock owners to register …

Developing Inside A Layer Of Germs—A Potential Role For Multiciliated Surface Cells In Vertebrate Embryos, Ryan R. Kerney

Biology Faculty Publications

This paper reviews current research on the microbial life that surrounds vertebrate embryos. Several clades are believed to develop inside sterile—or near-sterile—embryonic microhabitats, while others thrive within a veritable zoo of microbial life. The occurrence of embryo-associated microbes in some groups, but not others, is an under-appreciated transition (possibly transitions) in vertebrate evolution. A lack of comparable studies makes it currently impossible to correlate embryo-associated microbiomes with other aspects of vertebrate evolution. However, there are embryonic features that should instruct a more targeted survey. This paper concludes with a hypothesis for the role of multiciliated surface cells in amphibian and …

Nutrient Return From Plant Litter And Cattle Excretion Grazing On N-Fertilized Grass Or Grass-Legume Pastures In North Florida, Liza Garcia, D. M. Jaramillo, José C. B. Dubeux Jr., Lynn E. Sollenberger, João M. B. Vendramini, N. Dilorenzo, E. R. S. Santos, M. Ruiz-Moreno, L. M. D. Queiroz

IGC Proceedings (1977-2023)

Nutrient recycling via plant litter and livestock excreta is an important ecosystem service provided by grasslands. This study determined nutrient return via these pathways in three grazing systems. The experiment was conducted from May to October (2016 and 2017) and treatments were: 1) Nitrogen fertilized bahiagrass (Paspalum notatum Flügge) pastures (112 kg N ha^-1) during the warm-season, overseeded with a mixture (56 kg ha^-1 of each) of ‘FL 401’ cereal rye (Secale cereale, L.) and ‘RAM’ oat (Avena sativa, L.) during the cool-season (BGN); 2) Ecoturf Rhizoma peanut (Arachis glabrata Benth.)/bahiagrass …

Bird Community Responses To Rest-Rotation Grazing In Western Canada's Grasslands, T. F. Döbert, J. A. Randall, M. Iravani, E. W. Bork, M. S. Boyce

IGC Proceedings (1977-2023)

Western Canada’s native grasslands support high levels of avian diversity including both resident and migrant species. Many grassland specialist bird populations, however, are in serious decline due to widespread habitat loss resulting from agricultural conversion and adverse land management. As the primary use on remaining grasslands, cattle grazing largely determines the availability and quality of bird species’ habitat, depending on the timing, intensity, and frequency of livestock use. While adaptive multi-paddock grazing (AMP, a short duration, high-intensity grazing system that prioritises plant recovery between grazing events) is growing in popularity, comprehensive assessments of bird diversity in relation to AMP grazing …

Tree Legumes As Sustainable Ecosystem Services In Livestock Systems, James P. Muir, C. E. Cooper, V. Corriher-Olson

IGC Proceedings (1977-2023)

Arboreal legumes provide multiple uses in pastures and rangelands. Trees directly and indirectly feed, house, doctor, and warm humans at minimal environmental cost through forage (fodder), timber, biofuel, medicines, as well as edible leaves, pods, and seeds. Leguminous trees, because they foster biological nitrogen fixation (BNF) and acquire deep-soil nutrients and moisture, compete less with herbaceous plants for shallow-horizon soil moisture and nutrients. Their ecosystem services (ES) are generally less obvious and quantifiable. These include converting CO₂ to sequestered C and released O₂ in N-poor soils where trees without BNF do not thrive. Other ES include shade for …

The Importance Of Forage Legume Inclusion In Agricultural Swards To Enhance Earthworm Activity And Water Infiltration Rates, A. Shnel, S. Tracy, O. Schmidt, P. Murphy, M. B. Lynch, C. Grace, T. M. Boland, H. Sheridan

IGC Proceedings (1977-2023)

Increased grassland productivity in temperate regions has largely been achieved through perennial ryegrass Lolium perenne (PRG), coupled with large quantities of nitrogen fertiliser. However, concern is growing regarding the negative implications of excessive dependence on nitrogen fertilisers. Research has demonstrated the benefits of legume inclusion on primary productivity, however, their potential to influence other processes is less well established.

Sampling was undertaken in autumn 2017 on twenty randomised plots representing five sward types, replicated four times. These had been established and managed by cutting since 2013. Sward types included: 1) PRG (250kg N ha^-1 yr^-1 ); 2) PRG; …

A-02 The Development Of A Questionnaire To Measure The Perception Of Marital Dissatisfaction Among Nigerian Immigrants In North America: Immigrant Marital Disruption Questionnaire (Imdq), Jean A. Cadet, Jochebed Ade-Oshifogun, Augusta Y. Olaore

Celebration of Research and Creative Scholarship

The process of acculturalization of Nigerian immigrants is laden with challenges, including marital disruptions; however, we could not find any culturally sensitive tool available to measure marital disruption among this population. Therefore, we developed a tool to measure culturally sensitive factors leading to marital disruptions among Nigerians Immigrants in North America (NINA). A 17-item questionnaire was developed and tested on 160 subjects.

Five constructs derived from the analysis were Financial Stressors, Marital Relationship Deficits, Intercultural Conflicts, Spiritual Systems, and Others. The overall Questionnaire has high construct validity. However, the validity of the individual constructs ranged from Cronbach’s alpha of .54 …

The Impact Of Faith Community Nursing Programs For Chronic Disease Screening And Management In Vulnerable Populations: A Comprehensive Review Of The Literature, Gabri Warren

International Journal of Faith Community Nursing

Faith Community Nursing (FCN) programs in the United States (U.S.) emerged in the 1980's; however, the intertwining of health promotion in religious institutions has been present for millennia. Today, challenges facing healthcare are prompting health care providers to find creative and cost-effective methods of providing care. Determining whether FCN positively impacts the health of individuals with limited access to healthcare services would encourage healthcare providers to collaborate with the specialty, reinforcing the benefit of their service. An integrative literature review was conducted to identify studies measuring the impact of FCN on the health outcomes of individuals with hypertension (Baig, Mangione, …

Spiritually Influenced Health: Results Of A Health Promotion Initiative In Houses Of Worship, Crystal C. Shannon

International Journal of Faith Community Nursing

Promoting health within communities is a primary responsibility for nurses and other healthcare professionals. This involves the active incorporation of spiritual and faith-based approaches to health. Challenges remain in the delivery of effective health delivery that incorporates faith for at-risk communities. This is a retrospective descriptive study designed to explore the effects of faith-based health promotion sessions on existing health habits within local faith organizations from 2015-2018. The protocol utilized nursing students as project developers in collaboration with faith leaders and subject matter experts in the delivery of health education on nutrition, cardiac health, and physical activity. Findings suggest positive …

Pharmacy Students As Volunteer Medical Staff For American Diabetes Association Summer Camp, Emily Harvath

Purdue Journal of Service-Learning and International Engagement

For children living with a diagnosis of diabetes, com-munity support and education about proper disease management are critical for the mental and physical health of the child and their family. The experiences offered at summer camps hosted by the American Diabetes Association address both of these needs for the pediatric diabetes community. These camps provide children with the opportunity to participate in a traditional camp experience—swimming, rock climbing, tubing, and more—while giving parents peace of mind in the knowledge that their child’s diabetes will be closely monitored by a team of health care professionals. During my time as volunteer medical …

A Community Health Initiative: Health To The Power Of You, Stephanie Hendricks

Purdue Journal of Service-Learning and International Engagement

In April 2020, the COVID-19 pandemic impacted the number of visits to ambulatory care practices and was reported to have declined by nearly 60%. The extent of this decline is alarming as outpatient visits help manage chronic diseases in patients, such as diabetes, high blood pressure, and high cholesterol. This trend sparked an interest in pharmacist and student pharmacist, Dr. Cynthia Koh-Knox Sharp and Stephanie Hendricks, respectively, as it offered an opportunity to help serve the Greater Lafayette community. We created Health to the Power of You (Health^You), which targets two of Lafayette’s neglected populations: community members experiencing …

The Response Of Selected Temperate Forages To Increasing Summer Drought Conditions And High Summer Temperatures In Northern Victoria, Australia, M. E. Rogers, A. R. Lawson, K. B. Kelly, W. J. Wales, J. L. Jacobs

IGC Proceedings (1977-2023)

In the dairy region of northern Victoria, Australia, the performance of temperate perennial dairy pastures is often poor over summer due to a combination of high temperatures and limited water availability that can restrict dry matter production and plant survival. A series of field experiments examined the effects of heat and restricted irrigation (as a consequence of drought) on the growth and nutritive characteristics of selected forage species, and whether survival under experimental conditions was influenced by plant genotype, irrigation and grazing management strategies, as well as endophyte presence. The major focus was on perennial ryegrass.

Detailed sampling of perennial …

Effect Of Drought Stress On Fibre Digestibility Of Corn For Silage, G. Ferreira, C. L. Teets, A. M. Kingori, J. O. Ondiek

IGC Proceedings (1977-2023)

Limited information exists about the impact of drought stress on corn silage digestibility. The objective of this study was to determine the effect of irrigation on in situ NDF digestibility of corn tissues grown under controlled conditions in a greenhouse. Five commercial corn hybrids were planted in pots and grown in a greenhouse. Pots were subjected to an abundant or restricted irrigation regime. Leaf blades and stem internodes were collected from the upper and bottom portion of each hybrid. Tissue samples were incubated in the rumen of 3 rumen-cannulated cows for 0, 3, 6, 12, 24, 48, 96, and 240 …

Perceptions Of Gauteng Beef Farmers On Significance Of Practising Climate Smart Agriculture, S. T. Jiyana, K-J. Leeuw, Abubeker Hassen, Ignatius V. Nsahlai

IGC Proceedings (1977-2023)

Farmers are crucial role-players in agriculture, especially in beef farming. Daily farm activities affect climate change, either negatively or positively. Therefore, farmers’ ability to relate climate change with farm activities is highly imperative. A study was conducted to investigate perceptions of Gauteng beef farmers on significance of practising climate smart agriculture (CSA). Semi-structured key informant interviews were conducted with 57 beef cattle farmers from three areas (Bronkhorstspruit, Rust de Winter and Cullinan) of Tshwane region (Gauteng province). A fully detailed ethical statement was used to explain the study and request farmers’ participation. Data analysis was done using a Statistical Package …

Social Justice Week 2021 Full Event Calendar, Jolina Halloran

Social Justice Week

No abstract provided.

Nutrient Enrichment Increases Invertebrate Herbivory And Pathogen Damage In Grasslands, Anne Ebeling, Alex T. Strauss, Peter B. Adler, Carlos A. Arnillas, Isabel C. Barrio, Lori A. Biederman, Elizabeth T. Borer, Miguel N. Bugalho, Maria C. Caldeira, Marc W. Cadotte, Pedro Daleo, Nico Eisenhauer, Anu Eskelinen, Philip A. Fay, Jennifer Firn, Pamela Graff, Nicole Hagenah, Sylvia Haider, Kimberly J. Komatsu, Rebecca L. Mcculley, Charles E. Mitchell, Joslin L. Moore, Jesus Pascual, Pablo L. Peri, Sally A. Power, Suzanne M. Prober, Anita C. Risch, Christiane Roscher, Mahesh Sankaran, Eric W. Seabloom, Holger Schielzeth, Martin Schütz, Karina L. Speziale, Michelle Tedder, Risto Virtanen, Dana M. Blumenthal

Wildland Resources Faculty Publications

1. Plant damage by invertebrate herbivores and pathogens influences the dynamics of grassland ecosystems, but anthropogenic changes in nitrogen and phosphorus availability can modify these relationships.
2. Using a globally distributed experiment, we describe leaf damage on 153 plant taxa from 27 grasslands worldwide, under ambient conditions and with experimentally elevated nitrogen and phosphorus.
3. Invertebrate damage significantly increased with nitrogen addition, especially in grasses and non-leguminous forbs. Pathogen damage increased with nitrogen in grasses and legumes but not forbs. Effects of phosphorus were generally weaker. Damage was higher in grasslands with more precipitation, but climatic conditions did not change effects of nutrients …

Live Healthsmart, Bundles Of Hope Diaper Bank Partner To Provide Community With Affordable Produce And Free Diapers, Staff

Browse All News

No abstract provided.

Making A Difference In Children’S Lives: Lessons Learned From Planning And Implementing A Virtual Summer Camp During The Covid-19 Pandemic, Andrea Mcdonald Ph.D., Camille Burnett, Sonia Boone, Angela Branch-Vital, Michael Mcfrazier

Journal of Family Strengths

Summer camps are known to increase knowledge and engage children during the summer holidays. However, the COVID-19 pandemic placed a freeze on all activities that required face-to-face interaction during the summer of 2020. The purpose of this paper is to describe the planning, implementation, and evaluation of a virtual summer camp for children. Our virtual camp “Whimsical Wednesdays" was hosted by a Historically Black College and University (HBCU) that is dedicated to changing children's lives and providing service to the community. We recruited children aged 6-12 to attend the virtual summer camp through informational flyers posted on the institution’s website, …

Associations Of Diet With Cardiometabolic And Inflammatory Profiles In Pregnant Women At Risk For Metabolic Complications, Kataryna Jaworsky, Jeffrey L. Ebersole, Petar Planinic, Arpita Basu

Dental Medicine Faculty Research

Dietary intakes play an important role in the development of metabolic complications during pregnancy. While reported observational studies reveal an inverse association of healthy diets with weight gain, gestational diabetes, and hypertensive complications during pregnancy, there is a paucity of studies conducted among women of specific ethnicities vulnerable to higher risks of pregnancy complications. This is a secondary cross sectional analysis using baseline data from a previously reported clinical trial. We aim to identify associations of maternal habitual dietary intakes with cardiometabolic risks and inflammatory profiles in primarily African American (AA) and Hispanic women in the first half of pregnancy. …

Assessment Of Cash Value Benefits And The Effects On Participant Vegetable Consumption In The Louisiana Wic Program, Celia Rene Bridgeforth

LSU Doctoral Dissertations

The Special Supplemental Nutrition Program for Women, Infants, and Children (WIC) is administered by the United States Department of Agriculture (USDA) Food and Nutrition Service (FNS). The WIC program serves low-income women, infants, and children by providing supplemental foods, nutrition education, breastfeeding support and promotion, and referrals to healthcare and social service programs (Oliveira & Frazão, 2015). Revisions of the WIC food packages to include cash value benefits (CVB) that provided WIC participants the opportunity to purchase fruits and vegetables with their WIC benefits. There is significant research that indicates the benefit of F.V. consumption and the impact on diet-related …

When And Why Did Human Brains Decrease In Size? A New Change-Point Analysis And Insights From Brain Evolution In Ants, Jeremy M. Desilva, James F.A. Traniello, Alexander G. Claxton, Luke D. Fannin

Dartmouth Scholarship

Human brain size nearly quadrupled in the six million years since Homo last shared a common ancestor with chimpanzees, but human brains are thought to have decreased in volume since the end of the last Ice Age. The timing and reason for this decrease is enigmatic. Here we use change-point analysis to estimate the timing of changes in the rate of hominin brain evolution. We find that hominin brains experienced positive rate changes at 2.1 and 1.5 million years ago, coincident with the early evolution of Homo and technological innovations evident in the archeological record. But we also find that …

Legumes As A Strategy For Reducing Greenhouse Gas Emissions Of Forage-Livestock Systems, N. Dilorenzo, José C. B. Dubeux Jr., L. Garcia, R. D. Guevara, S. Lagrange, J. Macadam, J. J. Villalba

IGC Proceedings (1977-2023)

Incorporation of legumes into forage systems has been a widely adopted strategy to increase pasture productivity and forage nutritive value, while reducing N inputs. Considering the population growth, and the diminishing land resources for food production, the need to increase the food supply will have to be balanced with the environmental impact of these systems, particularly their carbon footprint. Enteric methane production represents the largest source of greenhouse gas emissions from livestock. Certain forage legumes have evolved plant secondary compounds, such as tannins and other polyphenols, which have been associated with reductions in enteric methane emissions. Studies were conducted at …