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Articles 31 - 60 of 85
Full-Text Articles in Medicine and Health Sciences
Algorithms And A Software Application For The Discovery Of Heparin-Binding Proteins For Chemical Analysis, Christopher Dempewolf
Algorithms And A Software Application For The Discovery Of Heparin-Binding Proteins For Chemical Analysis, Christopher Dempewolf
Computer Science and Computer Engineering Undergraduate Honors Theses
Heparin is a biological molecule that plays a vital role in anticoagulation. As such, it is used for the prevention of blood clotting in a variety of medical disorders. However, it is easily contaminated with foreign substances, and this can prove fatal for a person receiving heparin. In order to prevent this, proteins that easily bind to heparin need to be added to the solution. Then, the unwanted substances can easily be filtered out. Certain sequences or patterns of amino acids are known to have a high probability of binding to heparin. Thus, proteins that contain large numbers of these …
Statistical Investigation Of The Immune Response In Non-Human Primate Models, Annika Laser
Statistical Investigation Of The Immune Response In Non-Human Primate Models, Annika Laser
Theses and Dissertations
The human immunodeficiency virus (HIV) was first detected more than 30 years ago. Since then, intensive research has been done to develop a broadly protective vaccine, though without success. Our goal is to unveil some features of the protective immunity in non-human primate lentiviral infections in order to emulate HIV-infection. Two primate species have been studied, rhesus macaques (Rh) (Macaca mulatta) and African
green monkeys (Ag) (Chlorocebus spp.). Simian immunodeficiency virus (SIV) infection is non-pathogenic to Ag while Rh develop an AIDS-like illness. In this study, peripheral blood mononuclear cells (PBMC) from 8 Ag and 27 Rh were stimulated with …
Integrative Biomarker Identification And Classification Using High Throughput Assays, Pan Tong
Integrative Biomarker Identification And Classification Using High Throughput Assays, Pan Tong
Dissertations & Theses (Open Access)
It is well accepted that tumorigenesis is a multi-step procedure involving aberrant functioning of genes regulating cell proliferation, differentiation, apoptosis, genome stability, angiogenesis and motility. To obtain a full understanding of tumorigenesis, it is necessary to collect information on all aspects of cell activity. Recent advances in high throughput technologies allow biologists to generate massive amounts of data, more than might have been imagined decades ago. These advances have made it possible to launch comprehensive projects such as (TCGA) and (ICGC) which systematically characterize the molecular fingerprints of cancer cells using gene expression, methylation, copy number, microRNA and SNP microarrays …
The Association Of Diet And Physical Activity With Stroke Mortality Results From The Adventist Health Study-1, Tahereh Zamansani
The Association Of Diet And Physical Activity With Stroke Mortality Results From The Adventist Health Study-1, Tahereh Zamansani
Loma Linda University Electronic Theses, Dissertations & Projects
Stroke is one of the leading causes of death and disability, with major global public health implications. Stroke ranks No. 4 among all causes of death, behind heart disease, cancer, and chronic lower respiratory disease (CLRD). Stroke accounts for almost 1 of every 18 deaths in the United States. Women accounted for 60.6% of stroke deaths. Death certificate data show that the mean age at stroke death was 79.6 years; males had a younger mean age (76.3) than females.
There is still a great scientific uncertainty among researchers and epidemiologists about the magnitude of any preventive effect, mechanisms of action …
A Mathematical Model For Antibiotic Resistance In A Hospital Setting With A Varying Population, Edward H. Snyder
A Mathematical Model For Antibiotic Resistance In A Hospital Setting With A Varying Population, Edward H. Snyder
Electronic Theses and Dissertations
Antibiotic-resistant bacteria(ARB) is causing increased health risk and cost to society. Mathematical models have been developed to study the transmission of resistant bacteria and the efficacy of preventive measures to slow its spread within a hospital setting. The majority of these models have assumed a constant total hospital population with the admission and discharge rates being equal throughout the duration. But a typical hospital population varies from day to day and season to season. In this thesis, we apply variable admission and discharge daily rates to existing deterministic and stochastic models which examine the transmission of single and dual resistant …
Concurrent Neurological And Behavioral Assessment Of Number Line Estimation Performance In Children And Adults, Joseph Michael Baker
Concurrent Neurological And Behavioral Assessment Of Number Line Estimation Performance In Children And Adults, Joseph Michael Baker
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Understanding the brain’s response to common math-learning activities may help improve math education. For example, by imaging the brains of typically developing children and adults throughout a number line estimation task, it is possible to establish a baseline of what “typical” brains do in such situations. Thus, comparisons may be made to determine the degree to which brain functioning differs between typical and atypical math learners. Moreover, by identifying methods that may increase the brain’s response to real-world math activities, it may be possible to improve the math learning process for typical and atypical learners alike.
Brain imaging devices such …
Alpcs(2a)-Mediated Photochemical Internalization Of Bleomycin And Concurrent Hyperthermia Of Multicellular Tumor Spheroids, Aaron Andersen
Alpcs(2a)-Mediated Photochemical Internalization Of Bleomycin And Concurrent Hyperthermia Of Multicellular Tumor Spheroids, Aaron Andersen
UNLV Theses, Dissertations, Professional Papers, and Capstones
Treatments for glioblastoma multiforme and invasive ductal carcinoma involve surgical resection and adjuvant or concurrent targeted therapies. The goal of the secondary treatment is to reduce the cancer cells in the resection margin and other areas of suspected involvement. Photochemical internalization is a targeted therapy using light to activate photosensitizers embedded in cellular structures to improve the delivery of macromolecules within the cell.
In a previous study, optimized treatment parameters including radiant exposure, and irradiance, concentration of AlPcS(2a), temperature, and the concentration of bleomycin were determined for human ACBT glioma multicell spheroids. The current study investigates the effectiveness of the …
Influence Of Genetic Variation On Birth Defects In Caenorhabditis Elegans, Daniel Robert Kepple
Influence Of Genetic Variation On Birth Defects In Caenorhabditis Elegans, Daniel Robert Kepple
Renée Crown University Honors Thesis Projects - All
In my Renee Crown Honors Capstone project, I studied how genetic variation influences birth defects that cause death in C. elegans embryos. I performed high-throughput hatching assay experiments of recombinant inbred advance intercross lines of C. elegans. These lines are genetically distinct from each other. I found significant variation in birth defects causing embryo death in these recombinant inbred advanced intercross lines. My results give evidence that gene interaction may play a significant role in causing birth defects resulting in death. My data also provides a starting point for studies making statistical arguments linking these birth defects to specific …
Comparison Of Methodologies For Synthesis Of 3-(Cyclopropylethynyl)Benzisothiazole 1,1-Dioxide, Rachel Lee Naramore
Comparison Of Methodologies For Synthesis Of 3-(Cyclopropylethynyl)Benzisothiazole 1,1-Dioxide, Rachel Lee Naramore
Chancellor’s Honors Program Projects
No abstract provided.
Design And Fabrication Of Nanofluidic Systems With Integrated Sensing Electrodes For Rapid Biomolecule Characterization, Taylor Bradley Busch
Design And Fabrication Of Nanofluidic Systems With Integrated Sensing Electrodes For Rapid Biomolecule Characterization, Taylor Bradley Busch
Graduate Theses and Dissertations
A transparent nanofluidic system with embedded sensing electrodes was designed and fabricated by integrating Atomic Force Microscopy (AFM) nanolithography, Focused Ion Beam (FIB) milling and metal deposition, and standard microfabrication processing. The fabrication process started with the evaporation of chrome/gold (Cr/Au) onto a Pyrex 7740 wafer followed by photolithography and wet etching of the microchannels. The wafer was patterned a second time to form Au microelectrodes with 15-45 micrometer separation gaps in the nanochannel region. Sensing electrodes (up to one micron wide) were then deposited using FIB to bridge the gaps. The nanochannels were realized through both AFM nanolithography and …
Statistical Analysis Of Correlated Ordinal Data: Application To Cluster Randomization Trials, Ruochu Gao
Statistical Analysis Of Correlated Ordinal Data: Application To Cluster Randomization Trials, Ruochu Gao
Electronic Thesis and Dissertation Repository
Cluster randomization trials have become increasingly popular when theoretical, ethical or practical considerations preclude the use of traditional trials that randomize individual subjects. Although some methods for analyzing clustered ordinal data have been brought to wide attention, these are less developed as compared to methods for analyzing clustered continuous or binary outcome data. The aim of this thesis is to refine existing strategies which may be applicable to clustered ordinal data as well as extensions which have been previously considered only for clustered binary responses. The approaches include adjusted Cochran-Armitage tests using an ICC estimator, and correction and modification strategies …
Fertile Lands And Bodies: Connecting The Green Revolution, Pesticides, And Women’S Reproductive Health, Sarah M.K. Cycon
Fertile Lands And Bodies: Connecting The Green Revolution, Pesticides, And Women’S Reproductive Health, Sarah M.K. Cycon
Pitzer Senior Theses
Environmentalists, social scientists, and economists have long critiqued the enduring impacts of the Green Revolution’s diffusion of agricultural technologies throughout the Global South. However, largely missing from the myriad analyses is the relationship between those technologies, namely pesticides, and health outcomes. This thesis explores the social and biological mechanisms through which excessive pesticide use culminated into adverse reproductive health outcomes for rural women in the Global South. Drawing together the history of the Green Revolution’s use of DDT, its social and economic impacts, and the biology of pesticide contamination in women’s bodies exposes how the Green Revolution situated women in …
Study Of The Insulin Mimetic Sodium Orthovanadate In Glucosamine Induced Insulin Resistnace In Primary Rat Hepatocytes, Kalan Mcpherson
Study Of The Insulin Mimetic Sodium Orthovanadate In Glucosamine Induced Insulin Resistnace In Primary Rat Hepatocytes, Kalan Mcpherson
Masters Theses
Insulin resistance and type II diabetes is a disease state characterized by a lack of sensitivity of insulin to provoke a proper response in insulin sensitive tissues. Currently, we utilize glucosamine to increase flux through the Hexosamine Biosynthetic Pathway (HBP) to induce an insulin resistance like state in primary rat hepatocytes. We tested the effectiveness of the insulin mimetic sodium orthovanadate to determine if it could elicit an insulin-like response under these conditions. Mixed results were obtained on the effectiveness of vanadate as an insulin mimetic in this insulin resistant model.
Development Of A Rapid Spme/Gc-Ms Method For The Detection And Quantification Of Synthetic Cathinones In Oral Fluid, David Correll
Development Of A Rapid Spme/Gc-Ms Method For The Detection And Quantification Of Synthetic Cathinones In Oral Fluid, David Correll
Senior Theses and Projects
The recent emergence and widespread abuse of new classes of compounds on the designer drug market as “legal” alternatives to scheduled drugs such as Ecstasy has prompted interest in the development of analytical methods for their detection and characterization. Synthetic cathinones, which are structurally similar to amphetamines, are commonly advertised as a “legal highs” or “herbal highs,” and are marketed under names such as “bath salts” and “plant food.” To avoid drug abuse legislation, a “not for human consumption” warning is typically printed on the label. Their ready availability on the Internet and in “head” shops, convenience stores, and even …
Online Survey System For Image-Based Clinical Guideline Studies Using The Delphi Method, Todd Martin Harper
Online Survey System For Image-Based Clinical Guideline Studies Using The Delphi Method, Todd Martin Harper
Theses and Dissertations
The increasing use of health information technology (HIT) is due to a rising interest in improving the quality of health care. HIT has the potential to reduce cost and transform services. Proper clinical support systems will contribute to the meaningful use of HIT systems by providing a wide array of data to clinicians for the diagnosis and treatments. Clinical guidelines, created by a consensus of experts, can be put in place to assist physicians in making clinical decisions. Delphi methods are commonly used to create consensus from surveys completed by a team of experts. Image-based studies could create guidelines that …
Is Obesity Socially Contagious?, Ciani Jean Sparks
Is Obesity Socially Contagious?, Ciani Jean Sparks
Statistics
The main objective of this paper is to analyze three different articles that discuss whether obesity could be socially contagious. According to the World Health Organization in 2013, obesity is the fifth leading risk for deaths around the world. This disease has dramatically increased in the last decade, which has led scientists to believe there are other factors contributing to the epidemic besides genetics. The first article I analyzed, written by Nicholas Christakis and James Fowler, provided a logistic regression model to estimate the odds of a person becoming obese. The model included the explanatory variables: age, sex, education, smoking …
Striatal Dopamine Dynamics Upon Manganese Accumulation, Madiha Khalid
Striatal Dopamine Dynamics Upon Manganese Accumulation, Madiha Khalid
Wayne State University Dissertations
STRIATAL DOPAMINE DYNAMICS UPON MANGANESE ACCUMULATION
by MADIHA KHALID
August 2013
Advisor: Dr. Tiffany Mathews
Major: Chemistry (Analytical)
Degree: Doctor of Philosophy
Although manganese (Mn) is fundamental for many biological processes, exposure to excess amounts leads to a neurological disorder termed manganism. Due to its symptomatic similarity to Parkinson's disease, as well its preferential accumulation in dopamine rich brain regions, alterations in the dopamine system are implicated in the onset of manganism. In my research, Mn overexposure is mimicked via subcutaneous administration of manganese chloride to C57BL/6 mice over the course of seven days using a protocol that has been …
Transmission Rate In Partial Differential Equation In Epidemic Models, Alaa Elkadry
Transmission Rate In Partial Differential Equation In Epidemic Models, Alaa Elkadry
Theses, Dissertations and Capstones
The rate at which susceptible individuals become infected is called the transmission rate. It is important to know this rate in order to study the spread and the effect of an infectious disease in a population. This study aims at providing an understanding of estimating the transmission rate from mathematical models representing the population dynamics of an infectious diseases using two different methods. Throughout, it is assumed that the number of infected individuals is known. In the first chapter, it includes historical background for infectious diseases and epidemic models and some terminology needed to understand the problems. Specifically, the partial …
Post Use Analysis Of Firefighter Turnout Gear- Phase Iii, Meredith Laine Cinnamon
Post Use Analysis Of Firefighter Turnout Gear- Phase Iii, Meredith Laine Cinnamon
Theses and Dissertations--Retailing and Tourism Management
The purpose of this research was to perform a post-use evaluation of retired firefighter turnout gear. Garments were categorized as 10-12 years old, 13-17 years old and 18-21 years old. Inspection and test procedures required by National Fire Protection Association (NFPA) 1851 and NFPA 1971 were followed to determine if the current recommended 10 year wear life (retirement age) is appropriate. Testing included a visual inspection (closure system functionality, light evaluation, leakage evaluation and flashlight test) and performance properties (Thermal Protective Performance (TPP), flammability, breaking strength, tear strength, seam strength and water penetration) completed on 108 garments. Ten-year retirement, care, …
Sanitation Infrastructure, Medicinal Plant Use And Diarrhea In Rural Costa Rican Communities, Travis Clifford Sondgerath
Sanitation Infrastructure, Medicinal Plant Use And Diarrhea In Rural Costa Rican Communities, Travis Clifford Sondgerath
Open Access Theses
Diarrhea is estimated to be responsible for 3.3 million deaths a year and is particularly problematic in the developing world among children. The Millennium Development Goals established by the United Nations has set a goal of reducing mortality among children by two thirds during the new millennium. However due to the nature of diarrhea it is often difficult to study its patterns, distribution, and determinants.
This study presents an analysis of the relationship between diarrhea and sanitation infrastructure and medicinal plant use in 4 rural Costa Rican communities. Over the past few decades' access to clean drinking water and municipal …
Implementation And Model To Model Intercomparison Of 12 Heat Stress Metrics, Jonathan Robert Buzan
Implementation And Model To Model Intercomparison Of 12 Heat Stress Metrics, Jonathan Robert Buzan
Open Access Theses
Earth system models simulate the dynamics of the most complex systems on our planet with some success. Despite the overwhelming sophistication of these models, which include dynamical interactions of ocean, atmosphere, vegetation, ice, and land-surface properties, they fail to include the most important element. People. Humans are also a complex physical-biological system and coupling of human physiology within an Earth Systems Modeling framework is challenging. This thesis presents results that tackle one particular component of human physiological climate interaction--a representation of heat stress on human physiology. Twelve different metrics were implemented and analyzed. These metrics represent a variety of philosophical …
The Psychological Impacts Of False Positive Ovarian Cancer Screening: Assessment Via Mixed And Trajectory Modeling, Amanda T. Wiggins
The Psychological Impacts Of False Positive Ovarian Cancer Screening: Assessment Via Mixed And Trajectory Modeling, Amanda T. Wiggins
Theses and Dissertations--Epidemiology and Biostatistics
Ovarian cancer (OC) is the fifth most common cancer among women and has the highest mortality of any cancer of the female reproductive system. The majority (61%) of OC cases are diagnosed at a distant stage. Because diagnoses occur most commonly at a late-stage and prognosis for advanced disease is poor, research focusing on the development of effective OC screening methods to facilitate early detection in high-risk, asymptomatic women is fundamental in reducing OC-specific mortality. Presently, there is no screening modality proven efficacious in reducing OC-mortality. However, transvaginal ultrasonography (TVS) has shown value in early detection of OC. TVS presents …
Data Mining And Pattern Discovery Using Exploratory And Visualization Methods For Large Multidimensional Datasets, Hsin-Fang Li
Data Mining And Pattern Discovery Using Exploratory And Visualization Methods For Large Multidimensional Datasets, Hsin-Fang Li
Theses and Dissertations--Epidemiology and Biostatistics
Oral health problems have been a major public health concern profoundly affecting people’s general health and quality of life. Given that oral health data is composed of several measurable dimensions including clinical measurements, socio-behavioral factors, genetic predispositions, self-reported assessments, and quality of life measures, strategies for analyzing multidimensional data are neither computationally straightforward nor efficient. Researchers face major challenges to identify tools that circumvent the processes of manually probing the data.
The purpose of this dissertation is to provide applications of the proposed methodology on oral health-related data that go beyond identifying risk factors from a single dimension, and to …
Functional Data Analysis To Guide A Conditional Likelihood Regression In A Case-Crossover Study Investigating Whether Social Characteristics Modify The Health Effects Of Air Pollution, Juana Maribel Herrera Hernandez
Functional Data Analysis To Guide A Conditional Likelihood Regression In A Case-Crossover Study Investigating Whether Social Characteristics Modify The Health Effects Of Air Pollution, Juana Maribel Herrera Hernandez
Open Access Theses & Dissertations
In this study we are focused on exploring whether social characteristics modify the relationship between air pollution and hospitalizations due to asthma or chronic pulmonary obstructive disease (COPD) in El Paso, Tx. The case-crossover design with conditional regression analysis was used, here the controls and the case are the same subject at different
times and has the advantage of removing confounding by permanently confounding factors. Social characteristics are included in the models as interactions with the pollutants, variables included are age, sex, ethnicity and insurance status as indicator for the socio-economic status. The pollutant's lags were chosen using the historical …
Content Analysis Concerning State Green Lodging Certification Programs In The United States, Yue Yu
Content Analysis Concerning State Green Lodging Certification Programs In The United States, Yue Yu
Open Access Theses
The present thesis reports a content analysis study of state green lodging certification programs (SGLCPs) in the United States. The study explores how the government and industry associations operate and maintain SGLCPs. Through online research, the researcher found that 20 states have SGLCP. There are total 21 programs in operation currently. The study focused on the textual content of the 21 programs' websites.
The study determined the rationale of SGLCPs adoption through analyzing program purposes and certification bodies. The application procedure, assessment process, participation rate, certification levels, recertification process of programs were discussed to figure out whether SGLCPs implement the …
Fiducial-Free Alignment Verification Techniques For Intracranial Radiosurgery, Kenneth Matthew Williams
Fiducial-Free Alignment Verification Techniques For Intracranial Radiosurgery, Kenneth Matthew Williams
Theses Digitization Project
This thesis serves as the basis for a method using image registration to automate patient alignment in an effort to eliminate the dependency on the fiducial markers as well as improve the accuracy efficiency of the alignment process. Proton beams are an external beam modality of radiation therapy that can be used effectively for radiosurgical applications due to the dosimetry advantage of the Bragg peak. The Bragg peak is a phenomenon exploited by proton beam therapy to concentrate the effect of the beams on the tumor while minimizing damage to critical structures and other health tissues within the patient.
Alternative Hull Detection Techniques For Preprocessing In Proton Computed Tomography Reconstruction, Blake Edward Schultze
Alternative Hull Detection Techniques For Preprocessing In Proton Computed Tomography Reconstruction, Blake Edward Schultze
Theses Digitization Project
The purpose of this study was to develop computationally efficient hull detection techniques appropriate for image reconstruction using sparse matrices. The hull detection techniques investigated were space carving (SC), modified space carving (MSC), and space modeling (SM) and these were compared to the cone-beam version of filtered back projection (FBP) algorithm in terms of their computation time and the quality of the object hull they produced.
Impact Of Varied Low Resolution Phantoms On Intensity Modulated Proton Therapy Dose Distributions, Aarohi Shyam Padhye
Impact Of Varied Low Resolution Phantoms On Intensity Modulated Proton Therapy Dose Distributions, Aarohi Shyam Padhye
Theses Digitization Project
The primary purpose of this thesis is to discuss the usefulness of image segmentation techniques in creating accurate proton dose distribution plans. The calculation of the proton dose distribution has to take into account the material (tissue, bone, brain) in the treatment area of the patients body.
My Experience Exploring The Effects Of Lead (Pb +2) Toxicity In Drosophila Melanogaster Using Sociability Interaction Testing And Microarrays At The University Of Puerto Rico-Rio Piedras In San Juan, Puerto Rico, Charlton Diaz
Honors Theses
Lead is an environmental contaminant widely dispersed throughout the world. Exposure to lead causes neurological damage in humans and may be linked to neurodevelopmental pathologies such as attention deficit hyperactivity disorder, antisocial behavior, and autistic spectrum disorders (ASD). Drosophila melanogaster (fruit flies) have been used to understand the behavioral, synaptic, and molecular changes that occur after developmental exposure to lead and to study ASD-associated pathology. Flies were exposed through the mother and until eclosion to either a lead-laced medium or a control corn-based medium and were isolated until the beginning for the behavioral studies. Sociability testing was done using a …
Deprivation And Hispanic Health Paradox: Neighborhood Effects On Children's Wheezing In El Paso, Texas, Young-An Kim
Deprivation And Hispanic Health Paradox: Neighborhood Effects On Children's Wheezing In El Paso, Texas, Young-An Kim
Open Access Theses & Dissertations
This study examines the impact of hypothetical health determinants - including objective and relative economic deprivation, as well as foreign-born composition -at the neighborhood-level on respiratory wheezing among Hispanic children in El Paso, Texas while accounting for individual-level covariates based on hierarchical logistic modeling (HLM). Due to El Paso's majority Latino/a population, focus is placed on the so-called "Hispanic health paradox" through analysis of the impact of neighborhood foreign-born composition on Hispanic children's wheezing. Neighborhood-level variables at the census tract-level are derived from US Census data. The percent of families in poverty and the GINI coefficient for income (income inequality) …