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Articles 3181 - 3210 of 195926

Full-Text Articles in Engineering

Pegasus: Vfs 2025-2026 Dbvf, A'Zhae Turay, Elisabeth Canjar, Jack Carpenter, Cheng-Ju Wu, Xander Fruin, Sophia Bennett Apr 2026

Pegasus: Vfs 2025-2026 Dbvf, A'Zhae Turay, Elisabeth Canjar, Jack Carpenter, Cheng-Ju Wu, Xander Fruin, Sophia Bennett

Mechanical Engineering Senior Theses

Pegasus is an autonomous electric vertical takeoff and landing aircraft developed for the Vertical Flight Society Design-Build-Vertical Flight competition and designed around the operational needs of early-stage wildfire response. The system was developed to provide rapid aerial situational awareness, stable hover capability, modular payload deployment, and autonomous mission execution in environments where conventional reconnaissance methods may be limited by terrain, visibility, response time, or personnel risk. The final aircraft uses a hexacopter configuration with six electric propulsion units, a modular aluminum airframe, independent propulsion and avionics power systems, a Cube Orange+ flight controller, adaptive landing gear, and a bottom-mounted payload …


Plasmoid Vortex System Retrofit A Sustainability And Efficiency Study On Internal Combustion Engines, Walker Hall Apr 2026

Plasmoid Vortex System Retrofit A Sustainability And Efficiency Study On Internal Combustion Engines, Walker Hall

Doctoral Dissertations and Master's Theses

The thesis addresses the persistent inefficiency and environmental degradation caused by internal combustion engines in modern vehicles, a major issue as the automotive industry faces increasing pressure to reduce fuel consumption and greenhouse gas emissions. Internal combustion engines, which power most cars today, convert only about 20-30% of fuel energy into useful work, with the remainder lost as heat and exhaust waste, including carbon monoxide (CO), carbon dioxide (CO₂), hydrocarbons (HC), and nitrogen oxides (NOx). This inefficiency contributes to global carbon emissions, with transportation accounting for approximately 29% of U.S. greenhouse gases in 2021 [1]. As regulatory standards tighten (e.g., …


Antecedents And Consequences Of Consumer Behavior In Circular Fashion: Cognitive, Normative, And Behavioral Pathways Shaping Purchase And Participation Intentions, Mahmudul Hasan Sabuj Apr 2026

Antecedents And Consequences Of Consumer Behavior In Circular Fashion: Cognitive, Normative, And Behavioral Pathways Shaping Purchase And Participation Intentions, Mahmudul Hasan Sabuj

Department of Textiles, Merchandising and Fashion Design: Dissertations, Theses, and Student Research

The increasing environmental impact of the fashion industry has intensified the need for a systemic transition from linear to circular production and consumption models. Despite growing interest in circular fashion, there remains a limited understanding of the underlying behavioral dimensions that drive consumer engagement in sustainable practices. Grounded in the Theory of Planned Behavior (TPB) and Norm Activation Theory (NAT), this study examines consumer behavior through an integrated framework capturing cognitive, social, and normative influences.

Using data collected from a structured online survey (N = 575), the study employs Exploratory Factor Analysis (EFA), reliability analysis, and multiple regression techniques to …


A Model Intercomparison Study To Investigate Mixing Characteristics In Non-Precipitating Stratocumulus Clouds, Fan Yang, Kyoung Ock Choi, Kamal Kant Chandrakar, Fabian Hoffmann, Pei Hou, Steve Krueger, Chunsong Lu, Mikhail Ovchinnikov, Yangze Ren, Shin Ichiro Shima, Peng Wu, Chongzhi Yin, Zeen Zhu, Seong Soo Yum Apr 2026

A Model Intercomparison Study To Investigate Mixing Characteristics In Non-Precipitating Stratocumulus Clouds, Fan Yang, Kyoung Ock Choi, Kamal Kant Chandrakar, Fabian Hoffmann, Pei Hou, Steve Krueger, Chunsong Lu, Mikhail Ovchinnikov, Yangze Ren, Shin Ichiro Shima, Peng Wu, Chongzhi Yin, Zeen Zhu, Seong Soo Yum

Michigan Tech Publications

Recent aircraft observations of marine stratocumulus clouds consistently showed that cloud microphysical relationships vary with altitude, indicating inhomogeneous mixing characteristics near cloud top and homogeneous mixing characteristics in mid-levels of clouds. Here, we conduct model intercomparison of an idealized, non-precipitating stratocumulus cloud to evaluate model consistency and examine whether simulations can reproduce the observed mixing characteristics. The results show that eleven large-eddy simulations with various dynamics and microphysics schemes show good agreement on the thermodynamical, microphysical, and dynamical properties of the stratocumulus-topped boundary layer in a steady state. The inter-model spread in steady-state liquid water path is significantly reduced compared …


Unveiling Value In Plastic Waste: Synthesis Of 1,3-Dioxolan-4-Ones From Polylactic Acid And Polyoxymethylene To Enhance Plastic Biodegradation, Mi-Hyun Lee, Joohyun Park, Hyeongyeong Lee, Woo Yeon Cho, Semin Son, Pyung Cheon Lee, In-Hwan Lee, Hye-Young Jang Apr 2026

Unveiling Value In Plastic Waste: Synthesis Of 1,3-Dioxolan-4-Ones From Polylactic Acid And Polyoxymethylene To Enhance Plastic Biodegradation, Mi-Hyun Lee, Joohyun Park, Hyeongyeong Lee, Woo Yeon Cho, Semin Son, Pyung Cheon Lee, In-Hwan Lee, Hye-Young Jang

Mechanical Engineering Faculty Publications

Catalytic plastic upcycling protocols are essential for resolving the environmental and economic challenges associated with massive plastic production and disposal, as they convert complex waste streams into value-added chemicals. We report an efficient acid-catalyzed upcycling strategy for transforming poly(lactic acid) (PLA) and polyoxymethylene (POM) plastic waste. This innovative process directly yielding dioxolanones (DOXs) can be extended to use POM with various naturally abundant α-hydroxy acids. This work significantly expands the high-value chemical portfolio derivable from common plastic wastes. Incorporation of the synthesized DOXs into the poly(L-lactic acid) (PLLA) backbone results in materials with enhanced thermal stability and superior biodegradability. Critically, …


Enhancing Co2 Adsorption And Co2/N2 Separation Performance By Incorporating Calcium In Mil-53 (Al), Hussein Rasool Abid, Hussein Znad, Nabil Majd Alawi, Farhan Lafta Rashid, Anmar Dulaimi, Amer Alanazi, Alireza Keshavarz, Stefan Iglauer, Shaobin Wang Apr 2026

Enhancing Co2 Adsorption And Co2/N2 Separation Performance By Incorporating Calcium In Mil-53 (Al), Hussein Rasool Abid, Hussein Znad, Nabil Majd Alawi, Farhan Lafta Rashid, Anmar Dulaimi, Amer Alanazi, Alireza Keshavarz, Stefan Iglauer, Shaobin Wang

Research outputs 2022 to 2026

Global warming is primarily driven by the rapid accumulation of carbon dioxide (CO₂) in the atmosphere. Metal–organic frameworks (MOFs) have emerged as promising materials for mitigating CO₂ emissions due to their tunable porosity, large surface area, and structural flexibility. Among them, MIL-53(Al) has attracted widespread interest owing to its excellent thermal and chemical stability. Recent studies show that modifying MOFs with secondary metals can significantly enhance their CO₂ adsorption performance. In this work, a one-pot synthesis method was employed to incorporate calcium (Ca), functioning as a Lewis basic metal, into the MIL-53(Al) framework to produce a series of bimetallic materials: …


Engineering Zinc Anodes Through Advanced Manufacturing Strategies For Next-Generation Zinc–Air Batteries, Yasir Arafat, Kareem Bakhsh, Muhammad Rizwan Azhar Apr 2026

Engineering Zinc Anodes Through Advanced Manufacturing Strategies For Next-Generation Zinc–Air Batteries, Yasir Arafat, Kareem Bakhsh, Muhammad Rizwan Azhar

Research outputs 2022 to 2026

Rechargeable zinc–air batteries (ZABs) are promising next-generation energy storage systems due to their high energy density, intrinsic safety, and low cost. Nevertheless, commercial deployment of Zn anodes is hampered by persistent challenges like dendrite formation, deformation, passivation, corrosion, and the hydrogen evolution reaction. This review systematically highlights the critical relationship between anode morphology and electrochemical performance and discusses recent advances in advanced manufacturing strategies for Zn anodes. Additive manufacturing approaches, such as 3D printing, enable the fabrication of porous and tunable Zn electrodes with enhanced surface area and uniform ion flux distribution. Furthermore, advanced materials processing techniques like alloying, coatings, …


Liquid Membranes For The Selective Extraction Of Lithium Ions From Brine: A Review, Maryam Gonbadi, Shayan Abrishami, Yasaman Boroumand, Ana Vafadar, Magdalena Wajrak, Amir Razmjou Apr 2026

Liquid Membranes For The Selective Extraction Of Lithium Ions From Brine: A Review, Maryam Gonbadi, Shayan Abrishami, Yasaman Boroumand, Ana Vafadar, Magdalena Wajrak, Amir Razmjou

Research outputs 2022 to 2026

The surging global demand for lithium, driven by its essential role in batteries for electric vehicles, portable electronics, and energy storage systems, underscores the need for efficient and sustainable extraction technologies. This review provides a comprehensive analysis of liquid-based membrane technologies (bulk liquid membranes (BLMs), supported liquid membranes (SLMs), and polymer inclusion membranes (PIMs)) for selective lithium extraction from brine sources. These membranes employ carrier molecules such as crown ethers, organophosphorus compounds, and ionic liquids to achieve high selectivity over competing ions through facilitated transport mechanisms. BLMs, primarily used in laboratory settings, utilize various configurations enabling selective complexation and diffusion …


Assessment Of Thickness-Dependent Recombination Mechanisms And Realistic Performance Limits In Csbi₃I₁₀ Lead-Free Perovskite Solar Cells, Samiul Sadek, Ayan Saha, Jegadesan Subbiah, Mohammad Tariqul Islam, Mohammad Junaebur Rashid, Mohammad Aminul Islam, Gufran Umar Alam Shaikh, Wan Zulhafizhazuan Bin Wan Jusoh, Mohammad Nur-E-Alam, Puvaneswaran Chelvanathan, Mohd Adib Ibrahim Apr 2026

Assessment Of Thickness-Dependent Recombination Mechanisms And Realistic Performance Limits In Csbi₃I₁₀ Lead-Free Perovskite Solar Cells, Samiul Sadek, Ayan Saha, Jegadesan Subbiah, Mohammad Tariqul Islam, Mohammad Junaebur Rashid, Mohammad Aminul Islam, Gufran Umar Alam Shaikh, Wan Zulhafizhazuan Bin Wan Jusoh, Mohammad Nur-E-Alam, Puvaneswaran Chelvanathan, Mohd Adib Ibrahim

Research outputs 2022 to 2026

Lead-free perovskite solar cells (PSCs) offer a promising, environmentally sustainable alternative to their lead-based counterparts, yet their performance is often constrained by charge transport and recombination limitations. This study presents a comprehensive numerical investigation into the thickness-dependent performance of lead-free bismuth-based PSCs employing CsBi₃I₁₀ as the absorber layer. Through systematic variation of the absorber, electron transport layer (ETL), and hole transport layer (HTL) thicknesses within a planar FTO/TiO₂/CsBi₃I₁₀/Spiro-OMeTAD/Ag architecture modeled using SCAPS-1D, an optimal absorber thickness range of 0.5–1.0 µm is identified. Under idealized conditions, a peak power conversion efficiency (PCE) of 21.62% is predicted, primarily to illustrate thickness-dependent trends. …


Development, Performance Analysis And Application Of Polymer Inclusion Membranes: A Critical Review, Shayan Abrishami, Mahsa Golmohammadi, Matthew Myers, Masoumeh Zargar, Antonia Pérez De Los Ríos, Francisco José Hernández-Fernández, Amir Razmjou Apr 2026

Development, Performance Analysis And Application Of Polymer Inclusion Membranes: A Critical Review, Shayan Abrishami, Mahsa Golmohammadi, Matthew Myers, Masoumeh Zargar, Antonia Pérez De Los Ríos, Francisco José Hernández-Fernández, Amir Razmjou

Research outputs 2022 to 2026

Polymer Inclusion Membranes (PIMs) have emerged as sustainable separation platforms that integrate carrier-mediated selectivity within stable polymeric matrices, eliminating drawbacks of conventional solvent extraction such as solvent loss and emulsion formation. This review examines the fundamental principles, recent developments, and performance characteristics of PIMs, emphasizing design, fabrication, and operational optimization. The three essential components, base polymers, plasticizers, and carriers are systematically analysed alongside their synergistic effects on membrane stability, selectivity, and transport efficiency. Emerging materials including ionic liquids and deep eutectic solvents as dual-function plasticizers/carriers receive particular attention. Preparation methods are critically evaluated, including solution casting, phase inversion, and thermal …


Zwitterionic And Anionic Ultrafiltration Membrane Modification For Efficient, Fouling-Resistant Microalgae Harvesting, Victor Okorie Mkpuma, Mohadeseh Najafi, Javad Farahbakhsh, Masoumeh Zargar, Navid Reza Moheimani, Houda Ennaceri Apr 2026

Zwitterionic And Anionic Ultrafiltration Membrane Modification For Efficient, Fouling-Resistant Microalgae Harvesting, Victor Okorie Mkpuma, Mohadeseh Najafi, Javad Farahbakhsh, Masoumeh Zargar, Navid Reza Moheimani, Houda Ennaceri

Research outputs 2022 to 2026

Membrane surface modification is a promising strategy for fouling mitigation in membrane-based microalgae filtration, primarily by limiting the interactions between the membrane surface and the foulant particles. This study investigated the effectiveness of modified membranes in filtering Chlorella sp. MUR 269. First, three polyethersulfone membranes with varying pore sizes were evaluated to determine the influence of pore size on filtration performance and fouling behavior. The ultrafiltration membrane that exhibited the best performance was subsequently modified using two functional monomers: the zwitterionic [2-(methacryloyloxy)ethyl]dimethyl (3-sulfopropyl) ammonium hydroxide and the negatively charged mono-2-(methacryloyloxy)ethyl succinate (MMS). The filtration performance and fouling resistance of the …


An Integrated Tracking Technique For Underwater Navigation Using Acoustic And Imu Measurements, Mainul Islam Chowdhury, Quoc Viet Phung, Iftekhar Ahmed, Daryoush Habibi Apr 2026

An Integrated Tracking Technique For Underwater Navigation Using Acoustic And Imu Measurements, Mainul Islam Chowdhury, Quoc Viet Phung, Iftekhar Ahmed, Daryoush Habibi

Research outputs 2022 to 2026

Accurate navigation is essential for underwater vehicles like AUVs, which often operate in deep or remote areas. However, complex ocean dynamics, cumulative inertial-measurement unit (IMU) drift, and diverse noise sources often result in erratic and unreliable position estimates. To overcome these challenges, we proposed a method that combines underwater acoustic signals with onboard motion sensor data to improve the underwater position tracking system. The proposed system uses a long baseline (LBL) acoustic array of surface buoys to capture the Time-difference-of-Arrival (TDoA) of a multi-pulse beacon. We extract arrival times using a superimposed-envelope-spectrum (SES) detector, which exploits the beacon’s periodic structure …


Cure Sound Project: Library Loudness, Jordan Cosgrove, Adrian Cruz, Lilliana Cantu, Izabella Grinnell, Idaly Oropeza, Maria Gamez, Regina Losoya, Kayla Martinez, April Martinez, Emiliano Rueda Apr 2026

Cure Sound Project: Library Loudness, Jordan Cosgrove, Adrian Cruz, Lilliana Cantu, Izabella Grinnell, Idaly Oropeza, Maria Gamez, Regina Losoya, Kayla Martinez, April Martinez, Emiliano Rueda

Posters - 2026

The Louis J. Blume Library has three floors. Each floor has a different purpose and expected sound level. Ideal sound levels can vary based on task. Tasks requiring intense concentration may be negatively impacted by high sound levels1. However, for tasks requiring creativity, higher sound levels may be beneficial2-3. The purpose of this study is to examine noise levels on all floors of the library and determine which floor is most suitable for different tasks and studying types.


Evaluation Of An Affordable Prosthetic Liner In Resource Limited Settings, Samerial Brown Apr 2026

Evaluation Of An Affordable Prosthetic Liner In Resource Limited Settings, Samerial Brown

Posters - 2026

The lower limb prosthesis is an important assistive technology for persons with limb amputations and differences. The interface (prosthetic liner) between the rigid prosthetic socket and the residual limb is often made of silicone, urethane or thermoplastic elastomer gel. This material provides cushioning and support as well as suspension for the transtibial (below knee) prosthetic leg. Unfortunately the cost of liners range from $3-$600. This cost precludes its use in resource limited settings such as Sri Lanka. As a result patients are fit with a foam liner which has less cushioning and suspension capabilities than a gel type liner. This …


Agglomeration Of Particles Streaming Down A Zigzag, Juan Llamas Apr 2026

Agglomeration Of Particles Streaming Down A Zigzag, Juan Llamas

Posters - 2026

Zigzags or “letdown ladders” limit the flow speed of dry grains as they flow downward by gravity when loading silos, ships, barges, railcars, or trucks.

• Reduce cracking and shattering of grains.

• Increase grain shelf life.

• Increase grain resale value. • Increase ability of grain to germinate.

• Reduce generation of grain dust, an explosion and environmental hazard.

How can we design a zigzag that we know will not plug?


Efficient Energy Management In Networked Microgrids Using Multi-Agent Deep Reinforcement Learning In The Presence Of Uncertainties, Ayodele Benjamin Chukwuyem Apr 2026

Efficient Energy Management In Networked Microgrids Using Multi-Agent Deep Reinforcement Learning In The Presence Of Uncertainties, Ayodele Benjamin Chukwuyem

Dissertations

Microgrid technology is essential in facilitating the transition to smart energy grids in developed countries and mitigating energy poverty in developing countries, particularly in areas where grid extensions are not feasible. Recently, the concept of networked microgrids (NMGs) has garnered tremendous attention due to the plausibility of interactions among interconnected microgrids leading to power networks that are more resilient, reliable, and stable. However, because each microgrid has diverse distributed generation resources (renewables and controllable generators) and each microgrid operator (MO) has different objectives, coordinated energy management is required to satisfy local and system-wide goals under conditions with significant uncertainty. Existing …


Effect Of Curing Duration On Bridge Deck Concrete Performance, Zhaniya Omarova Apr 2026

Effect Of Curing Duration On Bridge Deck Concrete Performance, Zhaniya Omarova

Department of Civil and Environmental Engineering: Dissertations, Theses, and Student Research

This study evaluates the influence of curing duration on the performance of bridge deck concrete and investigates the feasibility of reducing curing periods without compromising structural and durability properties. Two concrete mixtures, a standard Nebraska Department of Transportation (NDOT) bridge deck mix (47BD) and an optimized reduced-cement-content mix (O47BD-R100), were evaluated under multiple curing durations Fresh, early-age, mechanical, durability, and shrinkage properties were assessed to characterize the effect of curing on concrete behavior. Internal relative humidity and temperature were monitored using embedded sensors to investigate moisture diffusion and its role in shrinkage development for lab specimens and full-scale slabs.

Results …


Sustainability In Concrete: Decision-Makers, Dismissal Points, And A Framework For Implementation, Max Dennison Apr 2026

Sustainability In Concrete: Decision-Makers, Dismissal Points, And A Framework For Implementation, Max Dennison

Construction Management

Concrete is essential to modern infrastructure, but is also one of the largest sources of embodied carbon, with cement production alone responsible for a significant share of global CO₂ emissions. Although low-carbon and otherwise “sustainable” concrete technologies are growing, their use in everyday projects remains limited. This research investigates why sustainable concrete options are most often dismissed during the project lifecycle, who drives these decisions, and what conditions are needed to enable broader adoption. Using a combination of literature review and semi-structured interviews with professionals in contracting, life-cycle assessment, sustainability consulting, and materials production, the study maps decision points from …


How Do Social Network Models Compare To All-To-All Models For Forecasting Tuberculosis Epidemics? A Mathematical Modeling Study, Masabho Peter Milali, Hae-Young Kim, George Corliss, Anna Bershteyn Apr 2026

How Do Social Network Models Compare To All-To-All Models For Forecasting Tuberculosis Epidemics? A Mathematical Modeling Study, Masabho Peter Milali, Hae-Young Kim, George Corliss, Anna Bershteyn

Electrical and Computer Engineering Faculty Research and Publications

Background. Mathematical models guide tuberculosis (TB) target-setting, yet most assume homogeneous “all-to-all” mixing. We compared projected intervention impacts between an all-to-all compartmental model and a Barabási–Albert (BA) scale‑free social network model under otherwise identical disease assumptions.

Methods. We calibrated transmission parameters so both models produced similar baseline trends, then introduced vaccination (coverage 30–70%; efficacy 80–95%) and treatment (20–50% increases in recovery) after a 400‑day burn‑in. Outcomes were assessed 300 days post‑intervention.

Results. Under 60% coverage, increasing vaccine efficacy from 80% to 95% yielded smaller projected reductions in active TB with the network model than with all‑to‑all mixing. Treatment improvements showed …


Evaluating Human Rod Photoreceptor Function Using Pixelwise Intensity-Based Optoretinography, Gao Yang, Mina Gaffney, Robert F. Cooper Apr 2026

Evaluating Human Rod Photoreceptor Function Using Pixelwise Intensity-Based Optoretinography, Gao Yang, Mina Gaffney, Robert F. Cooper

Biomedical Engineering Faculty Research and Publications

Purpose: More than 50 inherited retinal diseases are known, with rod photoreceptor functional loss serving as an early indicator in nearly half of them. The “optoretinogram” is a relatively new assay that detects optical changes in cells in response to stimuli. This tool has excellent potential for providing insights into the earliest functional changes of rod photoreceptors, with the potential to assist in the early detection, monitoring, and treatment of retinal diseases.

Methods: In this work, we obtained intensity-based optoretinograms (iORGs) from rod photoreceptors using an adaptive optics scanning laser ophthalmoscope. We explore the necessity of both individual rod identification …


Severity And Duration-Dependent Aortic Stiffening In A Rabbit Coarctation Model Identifies Constitutive Material Parameters As Promising Regional Biomarkers For Hypertension Progression, Arash Ghorbannia, Jamasp Azarnoosh, John F. Ladisa Jr. Apr 2026

Severity And Duration-Dependent Aortic Stiffening In A Rabbit Coarctation Model Identifies Constitutive Material Parameters As Promising Regional Biomarkers For Hypertension Progression, Arash Ghorbannia, Jamasp Azarnoosh, John F. Ladisa Jr.

Biomedical Engineering Faculty Research and Publications

Coarctation of the aorta (CoA) alters hemodynamics and drives regional remodeling, yet the influence of severity and duration on constitutive properties is undefined. We quantified mechanical responses from CoA to identify constitutive parameters capturing stiffening across clinical severities and durations. Mild (≤ 12 mmHg), intermediate (13–20 mmHg), and severe (> 20 mmHg) CoA was created in rabbits for short, long, and prolonged durations (~ 1, 3, or 22 weeks, respectively). Stress–stretch curves from proximal and distal regions were fit with multiple constitutive models (Linear Elastic, Neo-Hookean, Yeoh, Ogden, Mooney–Rivlin, Holzapfel). Model performance was evaluated by normalized RMSE and R², with …


Development And Acceptability Of A Patient Decision Aid For People With Degenerative Cervical Myelopathy: An International Mixed-Methods Study, Andrew R. Gamble, David B. Anderson, Marnee J. Mckay, Benjamin M. Davies, Sophie Macpherson, James Van Gelder, Tammy Hoffmann, Kirsten Mccaffery, Samuel X. Stevens, Carlo Ammendolia, Rohil V. Chauhan, Carl M. Zipser, Timothy F. Boerger, Lindsay A. Tetreault, Michael G. Fehlings, Elanor Dustan, Carolyn Nugent, Helen Holmgren, Andreas K. Demetriades, Justin M. Lantz, Rana Dhillon, Chris G. Maher, Joshua R. Zadro Apr 2026

Development And Acceptability Of A Patient Decision Aid For People With Degenerative Cervical Myelopathy: An International Mixed-Methods Study, Andrew R. Gamble, David B. Anderson, Marnee J. Mckay, Benjamin M. Davies, Sophie Macpherson, James Van Gelder, Tammy Hoffmann, Kirsten Mccaffery, Samuel X. Stevens, Carlo Ammendolia, Rohil V. Chauhan, Carl M. Zipser, Timothy F. Boerger, Lindsay A. Tetreault, Michael G. Fehlings, Elanor Dustan, Carolyn Nugent, Helen Holmgren, Andreas K. Demetriades, Justin M. Lantz, Rana Dhillon, Chris G. Maher, Joshua R. Zadro

Biomedical Engineering Faculty Research and Publications

Objectives To develop and user-test a patient decision aid for people diagnosed with degenerative cervical myelopathy and who are considering surgery.

Design Mixed-methods study describing the development of a patient decision aid.

Setting A draft decision aid was developed by a multidisciplinary steering group (including study authors with degenerative cervical myelopathy, health professionals and researchers) informed by the best available evidence, authorship consensus and existing patient decision aids.

Participants Patient-participants and health professional-participants who manage people with degenerative cervical myelopathy were recruited through social media and the steering group’s research and practice network. Quantitative questionnaires were used to gather baseline …


A Comparative Study On Performance Of Iot-Driven Ml-Enabled Forecasting Models For Efficient Air Quality Monitoring, Bara Ksiksi Apr 2026

A Comparative Study On Performance Of Iot-Driven Ml-Enabled Forecasting Models For Efficient Air Quality Monitoring, Bara Ksiksi

Theses

Air pollution is one of the most critical environmental challenges affecting public health globally, responsible for approximately 4.2 million premature deaths annually according to the World Health Organisation. This thesis presents a comparative study of IoT-driven machine learning forecasting models for air quality monitoring in Abu Dhabi, UAE, introducing a zonal approach combined with satellite-based spatial validation. The primary objective is to evaluate forecasting performance across three distinct activity zones using ground station data from the Environment Agency Abu Dhabi (EAD), and to incorporate a spatial validation component using satellite imagery to assess the consistency of ground-based predictions at a …


Analysis Of A Coaxial Transmission Line Filled With An Orthorhombic Dielectric-Magnetic Medium, Fathima Manikunnath Abdul Akbar Apr 2026

Analysis Of A Coaxial Transmission Line Filled With An Orthorhombic Dielectric-Magnetic Medium, Fathima Manikunnath Abdul Akbar

Theses

Coaxial transmission lines are fundamental means for Transverse Electromagnetic (TEM) wave propagation in RF, microwave and high-speed electronic systems. The study of transmission lines is often familiar when they are filled with isotropic materials; however modern engineered direction dependent materials reshape field distributions. In this thesis, we consider a coaxial transmission line of an inner radius and outer radius b filled with an orthorhombic dielectric-magnetic material, which is described by two anisotropy parameters αx and αy. The potential and field distributions are studied in relation to the ratio b/a as well as the anisotropy parameters αx and αy. Due to …


Plant-Mediated Green Synthesis Of Zinc Ferrite Nanoparticles: Mechanisms, Properties, And Advanced Applications In Environmental And Biomedical Fields, Rihab Jabbar Mar 2026

Plant-Mediated Green Synthesis Of Zinc Ferrite Nanoparticles: Mechanisms, Properties, And Advanced Applications In Environmental And Biomedical Fields, Rihab Jabbar

Al-Bahir

Recently, plant-mediated green synthesis has emerged as a sustainable, eco-friendly, and cost-effective strategy for synthesizing zinc ferrite (ZnFe₂O₄) nanoparticles (NPs). This review critically examines the advancements in biosynthesizing ZnFe₂O₄ NPs using various plant extracts, including Aloe vera, Hibiscus rosa-sinensis, Aegle marmelos, Eucalyptus leaves, Tragacanth gum, Piper nigrum, and Moringa oleifera, among others. It emphasizes their dual role as reducing, capping, chelating, and stabilizing agents. The article extensively compares physicochemical properties of the green-synthesized NPs in terms of crystallite size, morphology, magnetic behavior, and band gap energy. Achieved through different synthesis routes such as sol-gel, hydrothermal, co-precipitation, and microwave-assisted methods. …


Condition Monitoring Of Induction Motor Using Motor Current Signature Analysis, Francis Ikechukwu Obianke, Joseph Okhaifoh, Benjamin Akinloye Mar 2026

Condition Monitoring Of Induction Motor Using Motor Current Signature Analysis, Francis Ikechukwu Obianke, Joseph Okhaifoh, Benjamin Akinloye

Al-Bahir

Induction machines serve as the cornerstone and driving force of modern manufacturing and production systems. This research aims to monitor and analyse the operating performance of induction motors using motor current signature analysis (MCSA). MCSA is employed to process the current signal of a motor into a frequency spectrum, known as the current signature by applying the Fast Fourier Transform (FFT) algorithm. The underlying principle is that vibration generated in a motor is closely related to the changes of the magnetic field density, and the induced voltage varies with the stator current.

A simulation model replicating the behaviour of an …


Recombinant Gelonin: Purification And Functional Validation For Electroporation-Assisted Delivery, Eleni Zivla, Giedrė Šilkūnienė, Andrei G. Pakhomov, Mantas Šilkūnas, Olga N. Pakhomova Mar 2026

Recombinant Gelonin: Purification And Functional Validation For Electroporation-Assisted Delivery, Eleni Zivla, Giedrė Šilkūnienė, Andrei G. Pakhomov, Mantas Šilkūnas, Olga N. Pakhomova

Knowledge and Creativity Expo

Type I ribosome-inactivating proteins, such as gelonin, are enzymatically potent toxins but are effectively non-toxic under physiological conditions because they are unable to cross the plasma membrane[1]. Pulsed electric fields (PEF) overcome this delivery barrier by transiently permeabilizing the plasma membrane, allowing direct cytosolic entry. This enhances gelonin cytotoxicity by several thousand-fold, highlighting gelonin’s potential as an electrochemotherapy candidate[2]. Here, we present a recombinant gelonin (rGel) expression platform in E. coli with HPLC-based purification that enables reproducible protein production and structure-guided engineering.

The mature gelonin sequence (residues 47–297) was cloned into pET-32a(+) with an N-terminally fused Trx-6×His tag and TEV …


On The Extreme Complexity Of Certain Nearly Regular Graphs, Gregory P. Constantine, Gregory C. Magda Mar 2026

On The Extreme Complexity Of Certain Nearly Regular Graphs, Gregory P. Constantine, Gregory C. Magda

Theory & Applications of Graphs

The complexity of a graph is the number of its labeled spanning trees. It is demonstrated that the seven known triangle-free strongly regular graphs are graphs of maximal complexity among all graphs of the same order and degree; their complements are shown to be of minimal complexity. A generalization to nearly regular graphs with two distinct eigenvalues of the Laplacian is presented. Conjectures and applications of these results to biological problems on neuronal activity are described.


Requirements Of The Elderly In Interior Design Based On A Survey As A First Stage Of Smart Interior Design, Girges Sidhom, Christine Ezzat Danial Mar 2026

Requirements Of The Elderly In Interior Design Based On A Survey As A First Stage Of Smart Interior Design, Girges Sidhom, Christine Ezzat Danial

HBRC Journal

As the number of the aged in the world is expected to rise dramatically, the built environment should be adjusted to accommodate aging in place, and most of the facilities currently available are inadequate in terms of interior design requirements to support the functional and psychological needs of the aged. The purpose of this study is to establish the design needs of the aged by incorporating smart technology in interior architecture to make them safer and self-reliant. The methodology will apply a descriptive methodology by use of literature review and an analytical approach by use of a questionnaire of 153 …


Design And Construction Of Prestressed Concrete Balanced Cantilever Bridges, Ahmed S. Elareshy, Ashraf M. Osman, Ismail. M. Kamal, Amr A. Abdelrahman Mar 2026

Design And Construction Of Prestressed Concrete Balanced Cantilever Bridges, Ahmed S. Elareshy, Ashraf M. Osman, Ismail. M. Kamal, Amr A. Abdelrahman

HBRC Journal

Balanced cantilever concrete bridges have recently been widely used in mid and long-span bridges. This paper presents a comprehensive review of the development and design of prestressed concrete balanced cantilever (PCBC) bridges, focusing on research related to real case studies of both precast and cast-in-place box-girder bridges investigated through finite element modeling (FEM) or field measurements. The research strategy targeted peer-reviewed journal articles, conference papers, and technical reports published over the last two decades in major engineering databases. Construction methods, design methodology, and structural behavior of this type of bridge are discussed, alongside key findings on long-term response, dynamic performance, …