Digital Commons Network^™

Tendon Rupture And Tendonitis In Low-Profile Dorsal Versus Volar Plating For Distal Radius Fractures: A Systematic Review And Meta-Analysis, Matthew Myhand, Shreya Balusu, Alex Lindahl Bs, Hardy Evans Md, Charles Day Dr., Eric Jiang Dr.

Medical Student Research Symposium

Tendon Rupture and Tendonitis in Low-Profile Dorsal versus Volar Plating for Distal Radius Fractures: A Systematic Review and Meta-Analysis

Background: Dorsal plating of distal radius fractures has historically been associated with high rates of hardware removal, tendonitis, and tendon rupture. Newer generation low-profile dorsal plates are thinner (<1.6mm thick) with improved characteristics. We examine whether low-profile dorsal plates still have higher rates of tendon complications than volar locking plates.

Methods: We searched Ovid MEDLINE, Web of Science, and EMBASE for published literature describing tendon complications in association with plating of distal radius fractures. Inclusion criteria encompasses any primary study of low-profile dorsal plates that included data on tendon complications. Studies that included both low-profile dorsal and volar plating arms were included …

Low-Erosion Nozzle Materials For Long-Duration Hybrid Rocket Burns, Russell S. Babb

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Hybrid rocket systems, which employ a solid fuel grain and a liquid oxidizer, are a low-cost and environmentally friendly alternative to traditional rocket systems. However, hybrid rockets suffer from an increased nozzle throat erosion rate, which impacts motor performance and reliability. To address this issue several materials and low-erosion nozzle configurations were tested. The results of the testing campaign produced a nozzle that reduce the throat erosion rate five-fold.

Tendonitis And Tendon Rupture In Low-Profile Dorsal Versus Volar Plating For Distal Radius Fractures: A Systematic Review And Meta-Analysis, Matthew Myhand, Dr. Charles S. Day, Hardy Evans Md, Noopur Ranganathan, Shreya Balusu

Medical Student Research Symposium

INTRODUCTION: Dorsal plating of distal radius fractures has been associated with high rates of hardware removal, tendonitis, and tendon rupture. Much of this research was performed using 2.5mm thick distal radius plating, whereas modern dorsal plates are thinner (1.2mm-1.5mm). We examine whether modern plates have higher rates of complications than volar plates.

METHODS: We search Ovid MEDLINE, Web of Science, and EMBASE for literature describing tendon complications associated with plating of distal radius fractures. Inclusion criteria included any comparison between volar and dorsal plating and report of tendon complication. Exclusion criteria included: failure to specify low-profile dorsal plates; lack of …

Advancing Global Equity In Cardiac Care As Cardiac Implantable Electronic Device Reuse Comes Of Age, Daniel Alyesh, Behzad B. Pavri, William Choe, Mam Chandara, Mahmoud U. Sani, Phong Dinh Phan, Aime Bonny, Paul Khairy, Sunil K. Sinha, Uma Srivatsa, Joseph E. Marine, Kim Eagle, Thomas C. Crawford, Dhanunjaya Lakkireddy, Sri Sundaram

Division of Cardiology Faculty Papers

A nation’s health and economic development are inextricably and synergistically connected. Stark differences exist between wealthy and developing nations in the use of cardiac implantable electronic devices (CIEDs). Cardiovascular disease is now the leading cause of death in low- and middle-income countries (LMIC), with a significant burden from rhythm-related diseases. As science, technology, education, and regulatory frameworks have improved, CIED recycling for exportation and reuse in LMIC has become possible and primed for widespread adoption. In our manuscript, we outline the science and regulatory pathways regarding CIED reuse. We propose a pathway to advance this technology that includes creating a …

Maternal Socioeconomic Status And Infant Low Birth Weight: Interactions Across Generations, Kira M. Anderson

University Honors Theses

This article examines the interplay between low birth weight (LBW) and socioeconomic status (SES) across generations. Transgenerational research of LBW and SES is limited and poses certain challenges and nuances. A literature review was conducted which gathered studies that analyze both LBW and SES for two or more generations. Results of these studies are mixed, but the body of research is suggestive of patterns in which LBW and low SES may mutually exacerbate each other across generations. Furthermore, the research suggests that these patterns may be more severe among Black women. This paper calls into question the consequences that these …

Low Birth Weight And Its Associated Risk Factors In The United States Using National Survey Of Children Health Data 2016-2020, Olamide Asifat, Adedeji Adenusi, Sheryl Strasser, Yan Cao, Shimin Zheng

Appalachian Student Research Forum

Background: Low birth weight (LBW) is defined by the World Health Organization as birth weight of less than 2500g, and it is one of the leading causes of infant morbidity and mortality globally. LBW is indicative of poor prenatal care and nutrition in pregnancy, impacting on non-communicable disease risk burden throughout life. The main objective of this study was to examine the association between maternal socio-demographics and lifestyle behaviors with birth outcomes to elicit risk patterns among mothers of infants of LBW in the United States.Methods: National Survey of Children Health data for the years 2016-2020 were used in …

Small Animal X-Ray Irradiator Characterisation, Reece Horsford

University of Wollongong Thesis Collection 2017+

The aim of this project is to characterise an X-RAD 320 x-ray irradiator in the low energy spectrum range of 50-320kVp and develop methods for real-time 2d imaging of low energy x-rays using a MagicPlate-512 detector. The dose characteristics measured were the Output factor, depth dose, dose rate, and dose profile. The irradiator was characterised using the ‘American Association of Physicists in Medicine protocol for 40-300kV x-ray beam dosimetry’ (TG-61 protocol) to describe dose. First, the response was measured with a farmer chamber, using the TG-61 protocol the response was converted into dose. Using the farmer chamber the effect of …

Transitional Vocational Program For Persons With Low Vision And Other Visual Impairments, Andria Lubben, Karen Park, Susan Macdermott, Becki Cohill

Summer 2021 Virtual OTD Capstone Symposium

Background: Low Vision is a life-altering visual disability (CDC, 2015). OTs work with individuals with low vision and work in the workplace and education, however, there is no research on OTs working with individuals with low vision in work or post educational settings (Butler, 2016). Vocational and educational needs are often not being met for individuals with low vision (Barbieri et al., 2019).

Problem: OTs have a limited role in adolescent transition to the workplace and higher education in individuals with low vision and other visual impairments.

Purpose: To understand transitional programs that support vocational and educational development of individuals …

Maternal Sociodemographic And Antenatal Factors As Predictors Of Low-Birth Weight In Ghana, Alhassan A. Rauf, Mariah A. Sulemana

Menoufia Medical Journal

Introduction Globally, neonates with lower birth weight (LBW) are at higher risk of death as compared with those with normal birth weight, yet in Ghana, little is known about the nationwide predictors of LBW in terms of maternal demographic and antenatal factors. Aim To identify maternal sociodemographic and antenatal factors as a predictors of LBW in Ghana. Patients and methods A descriptive cross-sectional design was adopted for this study using Ghana Maternal Health Survey data for 2017. The data analysis was done using SPSS. χ² and binary logistics regression model was used for associations at significance of P value …

Association Of Ultra-Processed Food Intake With Risk Of Inflammatory Bowel Disease: Prospective Cohort Study, Neeraj Narula, Emily C L. Wong, Mahshid Dehghan, Andrew Mente, Sumathy Rangarajan, Fernando Lanas, Patricio Lopez-Jaramillo, Priyanka Rohatgi, P V M. Lakshmi, Romaina Iqbal

Community Health Sciences

Objective: To evaluate the relation between intake of ultra-processed food and risk of inflammatory bowel disease (IBD).
Design: Prospective cohort study.
Setting: 21 low, middle, and high income countries across seven geographical regions (Europe and North America, South America, Africa, Middle East, south Asia, South East Asia, and China).
Participants: 116 087 adults aged 35-70 years with at least one cycle of follow-up and complete baseline food frequency questionnaire (FFQ) data (country specific validated FFQs were used to document baseline dietary intake). Participants were followed prospectively at least every three years.
Main outcome measures: The main outcome was development of …

Radiation Tolerance Of Low-Cost Magnetometer For Space Applications, Leonardo H. Regoli, Mark B. Moldwin, Connor Raines, Tom A. Nordheim, Cameron A. Miller, Sara A. Pozzi, Martin Carts

Small Satellite Conference

Knowing the three-dimensional magnetic field configuration and dynamics in space environments is key to understand the physical processes taking place. Plasma dynamics depend on the local orientation of the magnetic field, and key quantities such as pitch angle and dynamical processes such as waves and reconnection cannot be studied without in-situ measurements of the fields. For this reason, magnetometers are one of the most important instruments for space physics-focused missions. This is true both for spacecraft and also for landed missions, particularly on atmosphere-less bodies, where the space environment interacts directly with the surface. To enable the next generation of …

Development Of A Low-Cost Multi-Camera Star Tracker For Small Satellites, Hongrui Zhao, Michael Lembeck

Small Satellite Conference

This paper presents a novel small satellite star tracker that uses multiple low-cost cameras to achieve viable attitude determination performance. The theoretical analysis of the star detectability improvement by stacking images from multiple cameras is presented. An image processing algorithm is developed to combine images from multiple cameras with various focal lengths, principal point offsets, distortions, and misalignments. The star tracker also implements other algorithms including the region growing algorithm, the intensity weighted centroid algorithm, the geometric voting algorithm for star identification, and the singular value decomposition algorithm for attitude determination. A star tracker software simulator is used to test …

Low Cost Magnetosphere Measurement: Leveraging Fusion Of Low Data Rate Downlink With Amateur Radio Community, Claire Carlton, Everett Maness, David Barnhart

Small Satellite Conference

In the last 10-20 years, the simplified structure and low-costattributes of CubeSats have given universities and other student groups the opportunity to build and launch their own small satellites. This was the case with the University of Southern California’s 4th CubeSat, Magneto. Magneto’s mission objective is to validate two magnetometers, provided in partnership by Omega Engineering, by attempting to map the Earth’s magnetic field in a low Earth orbit (LEO).

This goal presented a multifaceted problem, characterized by the design challenges associated with building a low-cost CubeSat that can collect and downlink data from all over the globe. A balance …

A New Paradigm For Implementing Noaa’S Low Earth Orbit Architecture, Frank W. Gallagher Iii, Vanessa Griffin, David Spencer

Small Satellite Conference

The National Oceanic and Atmospheric Administration (NOAA)Satellite Observing System Architecture (NSOSA) study, conducted from 2014-2018, indicated that disaggregating low earth orbit measurements using smaller satellites and instruments was highly favorable. The first initiative to disaggregate low earth orbit is to more carefully investigate atmospheric temperature and moisture soundings. In 2019 NOAA issued a Broad Agency Announcement (BAA) to seek proposals for sounder instrument and mission concepts. Contracts were awarded to the most relevant studies and are expected to be completed in the fall of 2020. These studies are expected to inform NOAA of new ideas and capabilities that can be …

Very Low Frequency Propagation Mapper (Vpm) Experience And Results From The Systems Engineering Cycle Of A Small Satellite, Travis Willett Gies, Tanya Rodriquez, Garrett Holt, Lee Jasper, Brandon Shirley, Collin Enger, Ryan Jaynes, Franklin Hinckley, Michael Lopez, Gordon Wilson, Stephen Tullino

Small Satellite Conference

The Very Low Frequency Propagation Mapper, an Air Force Research Laboratory 6U CubeSat, is currently in operations complementing the Demonstration and Science Experiments (DSX) satellite by taking coincident measurements with DSX of the inner magnetosphere. This presents an exciting way to have a low-cost platform enhance an existing mission’s data set with multiple spatial collection points. The Small Satellite Portfolio (SSP) had overall responsibility for the vehicle, ground system, and mission design; by enabling the team to make technical and programmatic decisions on their own, the team has been able to overcome many hurdles in short timeframes. Further, the team …

Development Of A Low-Resource Combined Gamma-Ray And Neutron Spectrometer For Planetary Science, Katherin E. Mesick, Daniel D. S. Coupland, Kurtis D. Bartlett, Darrel T. Beckman, Stephen T. West, Laura C. Stonehill, Nicholas A. Dallmann, Steven A. Storms, William C. Feldman

Small Satellite Conference

Planetary neutron and gamma-ray spectroscopy (NGRS) has become a standard technique to measure distinctive geochemical composition and volatile abundance signatures for key elements relevant to planetary structure and evolution. Previous NGRS measurements have led to the discovery of the concentration of many elements including hydrogen on the Moon, Mars, Mercury, and the asteroids Eros, Vesta, and Ceres, but by utilizing separate NGRS. We have developed the Elpasolite Planetary Ice and Composition Spectrometer (EPICS) instrument, an innovative and combined NGRS with low resource requirements. EPICS incorporates elpasolite scintillator read out by silicon photomultipliers (SiPMs) to provide significant reduction in size, weight, …

Development Of Electrodynamic Tethers For Propellantless Propulsion In Low-Earth Orbit, Derek Cheyne, Mitchel Miller, Zoe Nathanson, Maya Pandya, Anish Rajesh, Samriddhi Sharma, Liam Spence, Brian Gilchirst, Alexander Schienke

Small Satellite Conference

The Miniature Tether Electrodynamic Experiment-1 (MiTEE-1) is a University of Michigan faculty research project, backed by student research and leadership, consisting of a 3U CubeSat with a shortrigid boom electrodynamic tether (EDT) connecting a picosatellite providing enhanced current collection. It is the first of two satellite missions working towards a technology demonstration and increased knowledge of CubeSat spacecraft charging dynamics. This will thus allow for increased refinement and full operation of an EDT spacecraft system capable of station keeping activities on MiTEE-2. The mission of the MiTEE organization is to demonstrate and refine the technology needed to successfully use electrodynamic …

Low Swap Laminated Electrostatic Analyzers For Cubesat Applications, Hayden Richards, Carlos Maldonado, Jacob Harley, Richard Balthazor, Matthew Mcharg

Small Satellite Conference

Instead of a cylindrical or spherical tophat design, these analyzers use flat plate with thousands of individual apertures. This flat plate geometry greatly eases manufacturing, and results in a very inexpensive instrument as describe by Enloe et al. (2003).

Water Vapor Independent Satellite Propulsion System (Wisp) For Nanosatellite Orbit Maintenance, Ian A. Hardy, Jin S. Kang, Jeffery T. King

Small Satellite Conference

While nanosatellites have been widely implemented for scientific applications, power constraints, large free-space path losses, and system complexity prevent many researchers from fielding novel sensing hardware. Additionally, dead-on-arrival missions contribute to the growing volume of orbital debris. Access to lower orbits would decrease downlink losses, improve optical sensor performance, and ensure natural de-orbit for inoperable payloads. Conventional satellite propulsion technologies are capable of providing thrust required to maintain a low orbit, but increase system complexity and draw power away from the sensors. The United States Naval Academy has developed the Water Vapor Independent Satellite Propulsion system (WISP) to maintain orbits …

Finite Element Analysis Of Extruded Aa6061-T6 Mechanical Connection In Low-Cycle Fatigue, Nolan Hoffman

Theses and Dissertations

The low-cycle fatigue (LCF) life of the extruded aluminum alloy 6061-T6 (AA6061-T6) AM2 matting connection system was analyzed through 3D finite element modeling in conjunction with the plasticity-damage (DMG) and multi-stage fatigue (MSF) material models. The connection was modeled in ABAQUS Explicit based on the real-world boundary conditions of AM2 matting. The DMG-MSF user-defined material model characterized the low-cycle fatigue damage evolution within the microstructure of the extruded AA6061-T6 connection and utilized the maximum effective strain amplitude to predict the life of each stage of the fatigue process. It was determined that a constant displacement range of 15.17 mm generated …

Low Income Housing Community, Kristen Aubrey Hansen

Student Research Symposium

Low Income Housing. Government Aided Housing. These two phrases bring to mind images of dimly lit, poorly designed, cramped spaces. But they don't have to be. Technology and design have come a long way since the initial templates for this sort of housing were put into place. Safety, comfort, functionality, cost - these privileges don't need to be given up or weighed against each other to decide what's most important. This project outlines the potential for a LEED Neighborhood, low-income housing community right here in Logan, Utah. The design of this community produces a safe environment for kids and families. …

Music Education As A Strategy To Narrow The Achievement Gap: A Causal-Comparative Analysis Of Band And Choir Enrollment And Academic Achievement Of Low Socioeconomic Status Students, William Zwikelmaier

Dissertations

There is a gap in the knowledge pertaining to socioeconomic status as a variable in academic achievement among students those who enroll in band and/or choir in public high schools in America. Research has shown that students who engage in music study consistently show higher levels of academic achievement in other subjects compared to their non-music study peers. It is necessary to study those who typically do not perform at the same academic levels as their peers (low socioeconomic status (SES) students) and determine if the formal study of music alone can serve as a strategy to contribute to closing …

Sudden Infant Death Of Monozygotic Twin On The Same Day: A Case Report, Rayyan Al Ali, Hamzeh Al Zabadi, Noor Irshaid

Palestinian Medical and Pharmaceutical Journal

Sudden Infant Death Syndrome (SIDS) represents a major leading cause of death among all racial and ethnic groups of infants between one month and one year of age. The exact cause of sudden unexpected death is still unclear, but there are multiple possibilities which presumed to explain it, such as: cardiovascular abnormalities, suffocation and infectious diseases. The occurrence of such death is extremely rare particularly in twins. For the first time in Palestine, we report a case of eight-week-old female twin who were found dead while sleeping on their right side. Their death occurred within 24 hours from each other. …

Triboelectric Nanogenerator Versus Piezoelectric Generator At Low Frequency (<4 Hz): A Quantitative Comparison, Abdelsalam Ahmed, Islam Hassan, Ahmed Helal, Vitor Sencadas, Ali Radhi, Chang Jeong, Maher El-Kady

Faculty of Engineering and Information Sciences - Papers: Part B

© 2020 The Author(s) Triboelectric nanogenerators (TENGs) and piezoelectric generators (PGs) are generally considered the two most common approaches for harvesting ambient mechanical energy that is ubiquitous in our everyday life. The main difference between the two generators lies in their respective working frequency range. Despite the remarkable progress, there has been no quantitative studies on the operating frequency band of the two generators at frequency values below 4 Hz, typical of human motion. Here, the two generators are systematically compared based on their energy harvesting capabilities below 4 Hz. Unlike PGs, the TENG demonstrates higher power performance and is …

Air Void Detection Using Variational Mode Decomposition With Low Rank, Fok Hing Chi Tivive, Abdesselam Bouzerdoum, Shivakumar Karekal

Faculty of Engineering and Information Sciences - Papers: Part B

This paper presents an air-void detection technique for air-coupled radar, which emits electromagnetic waves to interrogate an air-void inside a medium or between two media. The reflections from the air-medium interfaces are usually corrupted by air-coupling, antenna ringing, and internal reflections, rendering air-void detection very difficult or, in certain cases, impossible. The proposed method exploits the low-rank structure of the background clutter to suppress these nuisance signals. A variational mode decomposition model is developed to extract the backscattering at different air-medium interfaces as signal modes. Real experiments are conducted using a stepped frequency radar. The experimental results show that the …

Low Anthocyanin Plum Nectar Does Not Impact Cognition, Blood Pressure And Gut Microbiota In Healthy Older Adults: A Randomized Crossover Trial, Ezinne Oyidia Igwe, Steven J. Roodenrys, Yasmine Probst, Vinicius Do Rosario, Michael Netzel, Hung Hong, Gabrielle Netzel, Anh Phan, Karen E. Charlton

Faculty of Science, Medicine and Health - Papers: Part B

Queen Garnet plum (QGP), known for its high levels of anthocyanins, is a hybrid of the Japanese plum developed in Queensland, Australia. Anthocyanins provide the red, blue and purple pigments in plants with demonstrated beneficial health effects. This study hypothesized that low-dose anthocyanin QGP intake will have a significant positive effect on cognition, blood pressure and gut microbiota in healthy older adults. A randomized crossover trial was conducted to determine the effect and within subject variance on cognition and 24 hr. ambulatory blood pressure in older adults without cognitive impairment following daily consumption of 200 mL low-dose anthocyanin (5 mg/100 …

Tailored Systems Engineering Processes For Low Cost High Risk Missions, Jared Clements, Tyler Murphy, Lee Jasper, Charlene Jacka

Small Satellite Conference

Given the low cost of most cubesat missions, a full implementation of the traditional space systems engineering process to cubesat missions can be detrimental to programmatic success of the cubesat. At the other extreme, cubesat missions often suffer predictable consequences from the omission of standard systems engineering processes such as risk management, configuration management, and quality assurance. In this paper we discuss a scaled systems engineering approach to cubesat missions implemented on a programmatically constrained mission. A discussion of each of the standard systems engineering processes and options for tailoring the processes for a constraint-based mission and how this varies …

A Prescription For Charity Care: How National Medical Debt Ills Can Be Alleviated By Integrating State Financial Assistance Policies Into The Nonprofit Tax Exemption, Margarita Kutsin

Seattle University Law Review

Despite having the most expensive healthcare system in the world, the United States has been consistently ranked as having the worst system in terms of equity, efficiency, and healthcare outcomes among industrialized nations. The effects of these systemic issues are grounded in the patient experience as nearly forty-four percent of individuals have forgone recommended treatments and thirty-two percent have reported that they were unable to afford a prescription due to the high cost, according to a study conducted in 2018. Health is sacred, and financial circumstances should not determine the difference between treatment and illness, or life and death. “Financial …

Factors Contributing To Low Readiness And Capacity Of Culturally Diverse Participants To Use The Australian National Bowel Screening Kit, Lyn Phillipson, Leissa Pitts, Julie Hall, Tameika Tubaro

Australian Health Services Research Institute

Objectives: Bowel screening is an effective way to promote early detection of bowel cancer. Culturally and linguistically diverse (CALD) people face considerable barriers to screening. This qualitative study explored perceptions towards, and usability of, Australia's national bowel screening kit with members of two migrant communities. Methods: Thirty-three people (aged 50-79 years) from Serbian and Macedonian communities in the Illawarra region in New South Wales, Australia, participated in one of five interactive focus group sessions. Sessions used innovative 'customer journey' techniques to understand participants' experience of each step of the faecal occult blood test process. Participants discussed knowledge of bowel cancer …

Epidemiology Of Self-Reported Maternal Depression During Pregnancy And Association With Adverse Birth Outcomes In New York State, 2012-2017, Solita Julianna Jones

Legacy Theses & Dissertations (2009 - 2024)

Background