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Life Sciences Commons

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2021

Brigham Young University

Articles 61 - 76 of 76

Full-Text Articles in Life Sciences

Using Geospatial Tools To Assess Changes To Marine Ecosystems In Small Island Developing States Following Hurricane Disturbances: A Case Study Of Dominica After Hurricane Maria, Ryan J. Shields Apr 2021

Using Geospatial Tools To Assess Changes To Marine Ecosystems In Small Island Developing States Following Hurricane Disturbances: A Case Study Of Dominica After Hurricane Maria, Ryan J. Shields

Theses and Dissertations

Seagrass meadows, like coral reefs, are in decline globally but are often neglected in marine policy and conservation despite their equally critical ecosystem services. Both habitats can be heavily impacted by wave surges, rainfall-induced earth movement and flooding, changes to water temperature, salinity, and acidity, and increased levels of turbidity—all occurring at increased rates due to a changing global climate. We demonstrate that multispectral satellite imagery, geospatial tools, and classification techniques can be used to inform management by identifying and quantifying changes in seagrass distribution and the presence of sediment-related threats. Results from Dominica indicate near-shore seagrass habitat area increased …


Use Of Flash Flaming Technology To Improve Seed Handling And Delivery Of Winterfat (Krascheninnikovia Lanata), Mitchell Grant Thacker Mar 2021

Use Of Flash Flaming Technology To Improve Seed Handling And Delivery Of Winterfat (Krascheninnikovia Lanata), Mitchell Grant Thacker

Theses and Dissertations

Ecological restoration of rangelands using wild-collected seeds can be challenging due to low seed quality, inconvenient seed anatomy, and poor plant establishment. In North America, the half-shrub winterfat (Krascheninnikovia lanata) is a valuable protein-rich forage for wildlife and livestock. Seeds of this species are contained in one-seeded fruits enclosed in four fluffy, silky bracts. While the seeds can be removed from the bracts, it is not recommended as the bracts are thought to help protect the seed and aid in germination and seedling growth. However, bracts of winterfat make it difficult to incorporate this species within a seed mix because …


Weekly One-Day Water-Only Fasting Interventional Trial For Low-Density Lipoprotein Cholesterol Reduction (Wonderful), Ciera Lynn Bartholomew Mar 2021

Weekly One-Day Water-Only Fasting Interventional Trial For Low-Density Lipoprotein Cholesterol Reduction (Wonderful), Ciera Lynn Bartholomew

Theses and Dissertations

Purpose: Fasting has been promoted as a method of preventing disease and aging for thousands of years. With heart disease being a leading cause of death in the U.S., researchers have explored the effects of fasting on variables that influence cardiovascular disease (CVD), like LDL cholesterol. Therefore, the purpose of this study was to assess the effects of weekly water-only fasting on LDL cholesterol (LDL-C) in men and women with metabolic risk factors for CVD. Methods: This study was a randomized control trial in adult men and women. Participants were randomized to fasting (treatment) or normal diet (control). The fasting …


Improving Perennial Bunchgrass Seeding Success In Annual Grass Invaded Areas Using Pre-Emergent Herbicide And Furrowing Techniques, Spencer Chad Camp Mar 2021

Improving Perennial Bunchgrass Seeding Success In Annual Grass Invaded Areas Using Pre-Emergent Herbicide And Furrowing Techniques, Spencer Chad Camp

Theses and Dissertations

Exotic annual weeds have transformed western North America, particularly in sagebrush-steppe systems. Restoration of these invaded sites has been met with low levels of success. Pre-emergent herbicide provides a means to control annual weeds, but typically, this treatment does not allow for the concurrent seeding of desired species. Seeding within a deep, U-shaped furrow following herbicide application may be a method to reduce pre-emergent herbicide effects by transferring the herbicide away from the seed at the time of planting. We tested this potential planting technique by spraying plots with or without the pre-emergent herbicide imazapic, and planting bunchgrass seeds either …


The Relationship Between Hip Mobility And Performance On The Functional Movement Screen In Apparently Healthy Older Adults: A Preliminary Study, Kimberly Jaye Lindstrom Mar 2021

The Relationship Between Hip Mobility And Performance On The Functional Movement Screen In Apparently Healthy Older Adults: A Preliminary Study, Kimberly Jaye Lindstrom

Theses and Dissertations

Limited or asymmetrical hip mobility can affect movement patterns common to everyday living. The aim of this study was to evaluate the relationship between hip mobility and performance on the Functional Movement Screen (FMS) in apparently healthy older adults. This relationship was evaluated in both males and females. In this observational study, 20 older adults (10 male, 10 female, mean age = 65.65 ± 10.18 years old) completed the Functional Movement Screen and measurements of passive hip range of motion. Separate regression analyses and Pearson Product-Moment Correlations were used to evaluate the relationship between hip mobility measures and FMS composite …


Telsam-Target Protein Fusions Can Form Diffraction-Quality Crystals Without Direct Inter-Polymer Contacts, Moriah Longhurst Mar 2021

Telsam-Target Protein Fusions Can Form Diffraction-Quality Crystals Without Direct Inter-Polymer Contacts, Moriah Longhurst

Undergraduate Honors Theses

X-ray diffraction is a robust method for determining the detailed 3D structures of specific proteins. However, this requires the formation of well-ordered protein crystals, a process that is time-consuming, expensive, and only has about a 10-30% success rate. New methods are needed to enable the efficient crystallization of challenging proteins. One such technique is explored here, which utilizes a protein polymer (the sterile alpha motif domain of the human protein translocation Ets leukemia, or TELSAM) as a crystallization chaperone to form a more ordered crystal lattice of target proteins and drive crystallization. This method was successfully used to crystallize, collect …


Milk-Fat Intake And Differences In Abdominal Adiposity And Bmi: Evidence Based On 13,544 Randomly Selected Adults, Klarissa Rae Wilkinson Mar 2021

Milk-Fat Intake And Differences In Abdominal Adiposity And Bmi: Evidence Based On 13,544 Randomly Selected Adults, Klarissa Rae Wilkinson

Theses and Dissertations

The primary objective of this study was to evaluate the relationship between milk-fat intake and obesity, particularly abdominal obesity, in 13,544 U.S. adults. A secondary objective was to determine the extent to which the association was influenced by multiple potential confounding variables. This cross-sectional study used data from the 2011–2016 National Health and Nutrition Examination Survey (NHANES). Level of milk-fat content regularly consumed was the exposure variable. Body mass index (BMI) and sagittal abdominal diameter (SAD), a measure of abdominal obesity, were the outcome variables. SAD correlates strongly with visceral fat, when measured by computed tomography, and has been shown …


Lymphocyte Proteomics For Monitoring Long Term Immune System Dynamics, Michaela Mccown Mar 2021

Lymphocyte Proteomics For Monitoring Long Term Immune System Dynamics, Michaela Mccown

Undergraduate Honors Theses

Time dependent change in lymphocytes provides a necessary background for monitoring the development of Chronic Lymphocytic Leukemia from asymptomatic to malignant. Several bulk proteomics studies characterize differences between tumor cells and healthy B cells, yet the transition to symptomatic disease is not well understood. This could be shown by a longitudinal study beginning with asymptomatic patients if the rare tumor cells in early stages can be isolated from small volume blood draws and effectively characterized with few cells, such as was done here using healthy B cells to provide a baseline for such studies to discriminate routine fluctuation from pathogenic …


Spatiotemporal Analysis Of Variability In Soil Volumetric Water Content And Spatial Statistical Methods For Management Zone Delineation For Variable Rate Irrigation, Isak Lars Larsen Mar 2021

Spatiotemporal Analysis Of Variability In Soil Volumetric Water Content And Spatial Statistical Methods For Management Zone Delineation For Variable Rate Irrigation, Isak Lars Larsen

Theses and Dissertations

Irrigated agriculture is the largest user of freshwater in a world experiencing increased water scarcity and water demands. Variable rate irrigation (VRI) aims to use water efficiently in crop production, resulting in good yields and water conservation. With VRI, the grower is able to employ custom irrigation rates for different parts of a field. Adoption of VRI has been limited due to the complexity of matching irrigation to spatiotemporal crop water needs and the cost/benefit economics of VRI equipment. The goal of this study was to quantify spatiotemporal variability of VWC in a field that has uniform soil type and …


Mutations In Hiv-1 Vpr Affect Pathogenesis In T-Lymphocytes And Novel Strategies To Contain The Current Covid-19 Pandemic, Antonio Solis Leal Feb 2021

Mutations In Hiv-1 Vpr Affect Pathogenesis In T-Lymphocytes And Novel Strategies To Contain The Current Covid-19 Pandemic, Antonio Solis Leal

Theses and Dissertations

Background SARS-CoV-2 is the virus responsible for the current global pandemic, COVID-19. Because this virus is novel, little is known about its sensitivity to disinfection. Methods We performed suspension tests against SARS-CoV-2 using three commercially available quaternary ammonium compound (Quat) disinfectants and one laboratory-made 0.2% benzalkonium chloride solution. Findings Three of the four formulations completely inactivated the virus within 15 s of contact, even in the presence of a soil load or when diluted in hard water. Conclusion Quats rapidly inactivate SARS-CoV-2, making them potentially useful for controlling SARS-CoV-2 spread in hospitals and the community.


Supplemental Material (Metabolomics Of Acid Whey Derived From Greek Yogurt), Muriel Allen Feb 2021

Supplemental Material (Metabolomics Of Acid Whey Derived From Greek Yogurt), Muriel Allen

ScholarsArchive Data

Supplemental material from the study Metabolomics of Acid Whey Derived from Greek Yogurt.


Cystic Fibrosis: An Ecological Review, Christopher Bozer Jan 2021

Cystic Fibrosis: An Ecological Review, Christopher Bozer

Student Works

This article focuses on the mechanisms of cystic fibrosis and the resulting microbial dysbiosis created through this disease. Through mutations in the CFTR gene, chloride ion proteins become dysfunctional, and mucus secreted in the lungs become thick and heavy, allowing infectious and pathogenic bacteria to thrive. 16s rRNA has been the primary method of sequencing the lung microbiome. Researchers have relied on bronchoscopies to collect proper samples. It can be concluded through current research that chloride ion dysfunction allows for an abnormal lung environment to develop. This abnormal environment allows for chronic infection of the lungs, and the formation of …


Testing The Effect Of Aquarium-Based Learning On Patron Acceptance Of Evolutionary Theory, Jamie Jensen, Ethan R. Tolman, Spencer G. Shumway, Liam S. Williams Jan 2021

Testing The Effect Of Aquarium-Based Learning On Patron Acceptance Of Evolutionary Theory, Jamie Jensen, Ethan R. Tolman, Spencer G. Shumway, Liam S. Williams

ScholarsArchive Data

This is data collected prior to and directly following an intervention at a public aquarium in Idaho surrounding the reconciliation of evolution with religious audiences.


In Vitro Screening Of Tp5801 Against Kinases For Nature Communications Publication, Joshua Andersen Jan 2021

In Vitro Screening Of Tp5801 Against Kinases For Nature Communications Publication, Joshua Andersen

ScholarsArchive Data

Data from screen of TP-5801 against in vitro kinases


Improvement In 14-3-3 Binding Site Prediction, Katherine K. Mccormack Jan 2021

Improvement In 14-3-3 Binding Site Prediction, Katherine K. Mccormack

ScholarsArchive Data

The 14-3-3 family of phospho-binding proteins regulate a variety of major cellular processes through interaction with a network of dynamic proteins. Deregulation of the 14-3-3 interaction network contributes to a variety of degenerative disorders and cancers. Our lab focuses on identifying novel 14-3-3 interactions and understanding how 14-3-3 binding regulates protein function. A major gap in this process is that identifying the phospho-site where 14-3-3 docks on a given protein is time- and resource-consuming. Prediction algorithms have been developed to predict canonical 14-3-3 binding sites, however, there are many non-canonical sites that existing software is unable to predict. To fill …


Kinase Screen Data For Nature Communications Publication, Joshua Andersen Jan 2021

Kinase Screen Data For Nature Communications Publication, Joshua Andersen

ScholarsArchive Data

A TNK1 peptide encompassing S502 was screened against 245 Ser/Thr kinases. This file contains kinase activity values (against S502) from an n=1 experiment. These data support a manuscript to be published in Nature Communications (Chan and Egbert et al.)