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What Is The Effect Of Physical Activity On The Reduction Of Macrovascular Complications In Patients Diagnosed With Type 2 Diabetes Mellitus?, Rachael M. Gordon Aug 2021

What Is The Effect Of Physical Activity On The Reduction Of Macrovascular Complications In Patients Diagnosed With Type 2 Diabetes Mellitus?, Rachael M. Gordon

Theses and Graduate Projects

The increasing prevalence and healthcare burden of type 2 diabetes is a worldwide concern. It is the seventh leading cause of mortality and a significant cause of morbidity. While both the macrovascular and microvascular complications of diabetes can have a profound impact on overall health and quality of life, cardiovascular events are the leading cause of mortality in patients with type 2 diabetes. Adults with diabetes have a two to four-fold increased risk of cerebrovascular events and myocardial infarctions. Oral medications combat insulin resistance and aid in the control of hemoglobin A1c, blood pressure, and cholesterol, therefore, contributing to a …

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Our Experience Of Mega-Prosthesis In Bone Tumours: A Retrospective Cross-Sectional Study In A Tertiary Care Hospital, Masood Umer, Eraj Khurshid Khan, Javeria Saeed Aug 2021

Our Experience Of Mega-Prosthesis In Bone Tumours: A Retrospective Cross-Sectional Study In A Tertiary Care Hospital, Masood Umer, Eraj Khurshid Khan, Javeria Saeed

Section of Orthopaedic Surgery

Objective: To evaluate the oncological and functional outcomes of bone tumour patients who underwent reconstruction with mega prosthesis.
Methodology: A retrospective study was conducted in the department of Orthopaedics Aga Khan University Hospital, Karachi. All the paediatric and adult age group patients diagnosed with malignant, benign and metastatic bone tumours and meeting the inclusion criteria were selected and analysed. Retrospective data was collected from January 2008-January 2018.
Results: Sixty-two patients, 30 (48.4%) females and 32 (51.6%) males. were included in the study. Of these 57 (92%) cases had involvement of the lower limb. The mean age was 36.95±19.1 years with …

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Representation And Strategy Learning For Variable-Size Tree Transformation Using Reinforcement Learning, Shirin Hosseini Shirvani Aug 2021

Representation And Strategy Learning For Variable-Size Tree Transformation Using Reinforcement Learning, Shirin Hosseini Shirvani

Computer Science and Engineering Dissertations - Archive

Trees as acyclic graphs are ubiquitous in representing different context where they encode connectivity patterns at all scales of organization, from biological systems to social networks. Trees are powerful resources which have been used many times for the exploration and discovery of interactions and properties in different context. Tree data structure representation approaches have led to remarkable discoveries in different real-world applications. In the last decades, extensive research and algorithms have been developed on tree or acyclic graph data structures with deep theoretical properties. The cost of solving these various problems ranges from simple linear time algorithms, to more complex …

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On The Efficacy Of Knowledge Graph Completion Methods, Accuracy Measures And Evaluation Protocols, Farahnaz Akrami Aug 2021

On The Efficacy Of Knowledge Graph Completion Methods, Accuracy Measures And Evaluation Protocols, Farahnaz Akrami

Computer Science and Engineering Dissertations - Archive

In the active research area of employing embedding models for knowledge graph completion, particularly for the task of link prediction, most prior studies used some specific benchmark datasets to evaluate such models. Most triples in those datasets belong to reverse and duplicate relations, which exhibit high data redundancy due to semantic duplication, correlation, or data incompleteness. This is a case of excessive data leakage—a model is trained using features that otherwise would not be available when the model needs to be applied for real prediction. There are also Cartesian product relations for which every triple formed by the Cartesian product …

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Macromodeling And Accelerated Simulations Of Electric Machines, Ajay Pratap Yadav Aug 2021

Macromodeling And Accelerated Simulations Of Electric Machines, Ajay Pratap Yadav

Electrical Engineering Dissertations - Archive

Electric machines are the most important element in the power grid. Given its centennial legacy and the rise of electric vehicles and distributed energy resources, it is imperative to bring new technologies into this area. This work tries to bridge the gap between electric machines and innovative research domains such as convex optimization and FPGA-based hardware acceleration. Problems of electric machine parameter identification and real-time simulation are considered. A convex optimization-based framework is designed to identify machine parameters. This tool is used to perform the macromodeling of a synchronous machine from its magnetic-equivalent circuit model. Furthermore, it is used to …

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Decoupling-Based Approach To Centrality Detection In Heterogeneous Multilayer Networks, Kiran Mukunda Aug 2021

Decoupling-Based Approach To Centrality Detection In Heterogeneous Multilayer Networks, Kiran Mukunda

Computer Science and Engineering Theses - Archive

Graph analysis is one of the techniques widely used for data analysis. It is used extensively on single graphs. Its ability to capture entities and relationships makes it an attractive data model. Search on graphs, such as finding triangles, cliques, shortest paths, etc., and aggregate analysis, such as communities, substructure, or centrality measures have well-defined algorithms for single graphs. The centrality measure, which is the focus of this thesis, identifies the most important nodes in a graph or network. While there are many centrality measures, the most commonly used ones are degree and betweenness centrality. Algorithms for analyzing these measures …

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Amorphous Silica Based Biomaterials For Musculoskeletal Tissue Regeneration Applications, Kamal Awad Aug 2021

Amorphous Silica Based Biomaterials For Musculoskeletal Tissue Regeneration Applications, Kamal Awad

Material Science and Engineering Dissertations - Archive

Musculoskeletal (MSK) injury includes any injuries that affect the bones, muscles, ligaments, tendons, or nerves. Open bone fracture is one of the common types of MSK traumatic injuries which results in not only bone fracture but also damage/loss of associated muscles, nerve, vasculature, endothelium, periosteum, fascia, and connective tissue. Surgical procedures and biological interventions are required to fix the broken bone, and muscle transfer is performed to compensate the skeletal muscle defects. Current treatments include fixative metal implants and regenerative biopolymer scaffolds, then muscle flap procedures to cover the bone. Yet, these treatments are inadequate because the used materials do …

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Stress Analysis Of Functionally Graded Materials, Nilabh Krishna Aug 2021

Stress Analysis Of Functionally Graded Materials, Nilabh Krishna

Mechanical and Aerospace Engineering Dissertations - Archive

A functionally graded material (FGM) is an inhomogeneous material whose material properties vary continuously. Since FGM’s material properties are continuous at the interface of the two materials, unlike conventional composites whose material properties are discontinuous at the interface, it is best suited to prevent catastrophically failure, stress concentration, and residual stresses. Literature reviews revealed that most of the research on FGMs was a 2-D analysis, especially on FGM plates and beams. This research focuses on 3-D stress analysis for an elastic medium that contains a spherical inclusion made of an FGM embedded in a matrix phase. To the best of …

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Effect Of Thermal Conductivity, Reynolds Number, Aspect Ratio And Packing Arrangement On Radial Heat Transfer In Packed Beds, Nishith Gorla Aug 2021

Effect Of Thermal Conductivity, Reynolds Number, Aspect Ratio And Packing Arrangement On Radial Heat Transfer In Packed Beds, Nishith Gorla

Mechanical and Aerospace Engineering Dissertations - Archive

The key motivation for this research is to study heat transfer developments in packed beds. The radial heat transfer enhancement of a packed bed in the laminar flow region is one of the major areas of ongoing research in mechanical, aerospace and chemical industries, especially the response of a packed bed during conjugate heat transfer with the fluid-solid interaction. This computational study focuses on the impact of packing size, thermal conductivity, and arrangement on the radial heat transfer performance as a function of Reynolds number. A simple annular tube packed with circles (2D) and spheres (3D) is utilized for this …

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Modeling The Effect Of In Situ Nozzle-Integrated Compression Rolling On The Mechanical And Fracture Behavior Of Fused Filament Fabrication (Fff) 3d Printed Parts, Momen Mohammad Qasaimeh Aug 2021

Modeling The Effect Of In Situ Nozzle-Integrated Compression Rolling On The Mechanical And Fracture Behavior Of Fused Filament Fabrication (Fff) 3d Printed Parts, Momen Mohammad Qasaimeh

Mechanical and Aerospace Engineering Dissertations - Archive

Fused filament fabrication (FFF) is one of the most common additive manufacturing/3D printing techniques where continuously extruded semi-molten filaments are deposited in a layer-by-layer manner. The quality of the manufactured part depends on some major factors such as filament-filament contact and adhesion as well as the void fraction. Filament to filament adhesion affects the part strength under transverse load. In our earlier work, we studied the effect of in situ ball rolling on the thermal and mechanical properties of the printed parts. It was found that when printing/rolling parameters are correctly tuned and in situ compression rolling is appropriately applied …

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Set-Theoretic Frameworks For Online Optimization, Estimation, And Control, Dignata Bhattacharjee Aug 2021

Set-Theoretic Frameworks For Online Optimization, Estimation, And Control, Dignata Bhattacharjee

Mechanical and Aerospace Engineering Dissertations - Archive

This research is primarily focused on developing online frameworks, which are suited to real-time implementation, for performance optimization, estimation, and control of dynamical systems using set-theoretic concepts and/or having set-theoretic interpretations. First, two perturbation-based extremum seeking control schemes, based on the classical setup and equipped with novel adaptation laws for the perturbation signal amplitudes, are proposed for general single input single output nonlinear systems. The proposed schemes are able to extremize steady-state system output in a practical asymptotic sense, i.e., the system is driven to an arbitrarily small set centered at the true steady-state optimal operating point. The next development …

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Uncertainty Propagation, Control, And Estimation Of Stochastic Dynamic Systems Using Generalized Polynomial Chaos Expansion, Rajnish Bhusal Aug 2021

Uncertainty Propagation, Control, And Estimation Of Stochastic Dynamic Systems Using Generalized Polynomial Chaos Expansion, Rajnish Bhusal

Mechanical and Aerospace Engineering Dissertations - Archive

In recent years, uncertainty propagation has emerged as an important research area in the field of dynamical systems. The growing interest in this area arises out of the need to develop computationally efficient approaches to predict the evolution of a system subject to uncertainties. To this end, this dissertation is focused on developing computational frameworks for uncertainty propagation, control, and state estimation of stochastic dynamical systems using the generalized polynomial chaos (gPC) expansion technique. In the first part of this dissertation, the construction of gPC expansion is presented in general. The novelty of this dissertation lies in developing a mixed …

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Computational Investigation Of Energy Dissipation Through Progressive Failure In Tailored Composite Structures Via Explicit Finite Element Analysis, Anirudh Srinivas Aug 2021

Computational Investigation Of Energy Dissipation Through Progressive Failure In Tailored Composite Structures Via Explicit Finite Element Analysis, Anirudh Srinivas

Mechanical and Aerospace Engineering Dissertations - Archive

In this study, energy dissipation in structures implementing a previously developed, analytically modeled, and experimentally validated composite tailoring concept is investigated using an explicit finite element approach. The tailored composite structures consist in a series connection of parallel alternate load paths of tailored length and thickness. The advantage of the tailored structure when compared to an untailored conventional structure is that when subjected to a tensile load, the response of the tailored composite structure is characterized by progressive failure of the load paths resulting in increased energy dissipation. The tailored composite structure is modeled for IM7-8552 composite material using a …

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Laminar Swept And Cross Shockwave/Boundary-Layer Interactions, Jiss Jacob Sebastian Aug 2021

Laminar Swept And Cross Shockwave/Boundary-Layer Interactions, Jiss Jacob Sebastian

Mechanical and Aerospace Engineering Dissertations - Archive

Shockwave/boundary-layer interactions are considered one of the most complex problems in high-speed gas dynamics, and numerous studies have been carried out for more than eighty years to understand the fundamental physics. A numerical study was performed using fin-plate configurations to study the three-dimensional swept and cross shockwave/ laminar boundary-layer interactions. All the interactions studied were strong enough for the boundary layer to separate. In the first part, swept shock interactions between a laminar boundary layer and the shockwave induced by a sharp fin mounted perpendicularly on a flat plate were studied. Different flow conditions were investigated at freestream Mach numbers …

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Design, Operation And Maintenance Of Direct And Indirect Evaporative Cooling Systems In Data Center Thermal Management, Ashwin Siddarth Aug 2021

Design, Operation And Maintenance Of Direct And Indirect Evaporative Cooling Systems In Data Center Thermal Management, Ashwin Siddarth

Mechanical and Aerospace Engineering Dissertations - Archive

Evaporative cooling is an alternative data center cooling solution that presents significant energy cost savings in acquisition and operation when compared to conventional air conditioning and mechanical refrigeration systems. This research focuses on developing a deeper understanding in implementing, operating and maintaining evaporative cooling systems integrated with air-side economization to realize the energy savings potential in data center cooling. The goal of the research is to develop a comprehensive guide to assess and contrast different approaches of evaporative cooling being used in data center cooling and provide guidance in improving water and energy efficiency. An air handling unit (AHU) serves …

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Assessment Of The Potential Of Self-Incorporation As A Solution To Roadway Maintenance In Texas Colonias, Moise Dzogolo Aug 2021

Assessment Of The Potential Of Self-Incorporation As A Solution To Roadway Maintenance In Texas Colonias, Moise Dzogolo

Public Affairs Theses - Archive

Colonias are communities that lack basic infrastructures such as water, sewer, and paved roads and that are located within 100 miles of the US-Mexico border. They are generally found in unincorporated areas, and the literature, as well as policy makers, have extensively called for their annexation as a solution to solve the infrastructure issues. This paper examines selfincorporation as an alternative to annexations as cities have consistently avoided colonias when they expand through annexation. The paper has two focuses. The first one consists of analyzing the economic and social aspects of a colonia to determine whether they resemble the ones …

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Design Of Streamline-Traced Inlets And Their Integration With Rotating Detonation Engines, Malcolm Lee Branch Aug 2021

Design Of Streamline-Traced Inlets And Their Integration With Rotating Detonation Engines, Malcolm Lee Branch

Mechanical and Aerospace Engineering Theses - Archive

This thesis has two parts: 1) design of the streamline-traced inlets (STIs); and 2) integration of STIs with rotating detonation engines (RDEs). The STI design starts with a two-dimensional, isentropic compression flowfield as the parent flowfield. The method of characteristics was used to generate the flowfield throughout the entire STI. For a given flight altitude 18 km, freestream Mach number M?=3.0, and inlet exit-plane Mach number M?=1.2, a parametric sweep of the initial deflection angle ?1=4.0--11.0 deg and the Mach number at the entrance of the internal compression system M3=1.3--1.7 was performed to determine the STI performance sensitivity as a …

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Haptic Interface Optimization For Virtual Anastomosis Surgery Training, Kangji Huang Aug 2021

Haptic Interface Optimization For Virtual Anastomosis Surgery Training, Kangji Huang

Mechanical and Aerospace Engineering Theses - Archive

Virtual anastomosis surgery study allows surgeons to perform or practice suturing in virtual reality using a commercial haptic device. The haptic device can generate force feedback so that the user can feel the real touch sensation of the object in virtual reality. The virtual anastomosis surgery study has two requirements which are that the haptic device must be fixed on the operating table and haptic device location must be suitable for different surgeons. The goal is to use a commercially available haptic device for this purpose, rather than design a new device for each possible surgery that must be performed. …

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Design And Cfd Analysis Of Bimetallic Based Passive Dynamic Cold Plate For High Power Direct-To-Chip Liquid Cooling, Apurv Pravin Deshmukh Aug 2021

Design And Cfd Analysis Of Bimetallic Based Passive Dynamic Cold Plate For High Power Direct-To-Chip Liquid Cooling, Apurv Pravin Deshmukh

Mechanical and Aerospace Engineering Theses - Archive

Rising demand for high-performance chips results in the need for advanced and efficient cooling technologies like direct to chip liquid cooling. Cold plates based utilizing direct liquid cooling is one of the most efficient and the most investigated cooling technology since the 1980s. Major data services and cloud providers like IBM, Microsoft, and Google had already started a shift towards liquid-cooled data centers for their high computational servers. At the chip level nowadays, the processors are divided into several cores and each of these cores continuously works at varying computational demands. This creates a non-uniform heat distribution across the processor, …

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Simulation Of A Soft Body Non-Grasp Manipulator Using A Spring-Mass-Damper Cloth Model, Cristian Almendariz Aug 2021

Simulation Of A Soft Body Non-Grasp Manipulator Using A Spring-Mass-Damper Cloth Model, Cristian Almendariz

Mechanical and Aerospace Engineering Theses - Archive

Simulation and modeling are well known and important tools in the field of robotics, being used to validate design and in the development of robotic control systems. Traditionally, robotic systems have been primarily rigid body systems and used in well controlled environments where interactions are highly predictable, and exceptions are minimized. With the ever-increasing adoption of robotics in the medical field, typical robotic environments are becoming highly unpredictable and requiring the modeling and simulation of not only rigid body systems but soft systems and interactions between the two. This work addresses model improvement of a “soft and hard” robotic system …

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Development Of Virtual Simulation For Evaluation Of Robotic Assistive Environment, Shubham Raosaheb Gunjal Aug 2021

Development Of Virtual Simulation For Evaluation Of Robotic Assistive Environment, Shubham Raosaheb Gunjal

Mechanical and Aerospace Engineering Theses - Archive

Robotics research in virtual simulation has the advantage of reduced testing time, verification of algorithms on different systems before implementation, and cost-saving. Today’s simulation softwares are capable of providing the physics of the simulation such as torque requirements of the joints which aid in the selection of appropriate hardware. In this research, Webots, an open-source physics-based simulation, and visualization software is evaluated and then used to study and evaluate the performance of two robotic systems for a robotic assistive environment for persons with upper limb disabilities. This includes a wheelchair, a table with objects, and two robotic arms attached to …

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Investigating A Finite Element Model Updating Methodology For Characterizing Mechanical Properties Of Ncf Composites, Pasworn Chanchai Aug 2021

Investigating A Finite Element Model Updating Methodology For Characterizing Mechanical Properties Of Ncf Composites, Pasworn Chanchai

Mechanical and Aerospace Engineering Theses - Archive

Composite materials have been a key breakthrough in developing aircraft structures. Their superior strength and stiffness-to-density ratio, which are unmatched by no other materials, allow engineers to create high strength and ultra-lightweight aircraft structures. Recently, non-Crimp Fabric (NCF) composites have emerged as attractive alternatives to traditional autoclave pre-impregnated composites allowing for lower production costs, better handling and improved shelf life while maintaining excellent in-plane mechanical properties compared to other types of textile composites. NCF out-of-plane mechanical properties can also be enhanced by stitching a high tensile strength yarn throughout their entire laminate thickness, improving the resistance to delamination. However, stitch-reinforced …

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Surface Modification Of Titanium By Electrolytic Plasma Processing And In-Vitro Studies, Wisanu Boonrawd Aug 2021

Surface Modification Of Titanium By Electrolytic Plasma Processing And In-Vitro Studies, Wisanu Boonrawd

Material Science and Engineering Dissertations - Archive

Electrolytic plasma processing (EPP) can be operated in two modes, namely plasma electrolytic saturation (PES) and plasma electrolytic oxidation (PEO). In this study, the PES was used to create hydrophilic surface profiles on titanium (Ti). The wettability, surface morphology characteristics and chemical composition of the treated samples were studied as a function of PES processing parameters. The PES profiled surfaces comprised of a characteristic “hills and valleys” morphology because of continuous surface melting and freezing cycles. A bimodal surface profile was produced with 2-3 µm height hills and valleys with nano-roughness (= 200 nm). The produced profile resulted in a …

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Poly(Lactic-Co-Glycolic Acid) Nanoparticle Delivery Of Notch Intracellular Domain Plasmid To Restore Notch Signaling, Victoria L. Messerschmidt Aug 2021

Poly(Lactic-Co-Glycolic Acid) Nanoparticle Delivery Of Notch Intracellular Domain Plasmid To Restore Notch Signaling, Victoria L. Messerschmidt

Bioengineering Dissertations - Archive

Notch signaling is a highly conserved signaling system that is required for embryonic development and regeneration of organs. When the signal is lost, maldevelopment occurs and leads to a lethal state. Delivering exogenous genetic materials encoding Notch into cells can reestablish downstream signaling and rescue cellular functions. Here, we utilized the negatively charged and FDA approved polymer poly(lactic-co-glycolic acid) to encapsulate Notch Intracellular Domain-containing plasmid in nanoparticles. We show that primary human umbilical vein endothelial cells (HUVECs) readily uptake the nanoparticles with and without specific antibody targets. We demonstrated in vitro that our nanoparticles are nontoxic, stable over time, and …

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Utilizing Load Tests And Site Investigation Data To Predict Design Load Capacities For Drilled Shafts In Different Geologic Formations, Hosam Salman Aug 2021

Utilizing Load Tests And Site Investigation Data To Predict Design Load Capacities For Drilled Shafts In Different Geologic Formations, Hosam Salman

Civil Engineering Dissertations - Archive

Precise predictions of the design capacities of drilled shafts on weak rock formations is vital for a better design of foundations. Irregularities in rock formations due to weathering cause discrepancies in actual bearing capacities and evaluating the bearing capacity typically requires frequent in-situ testing, using load test shafts at smaller intervals, which is time consuming and expensive. The typical design in Texas currently utilizes in-situ design charts that are developed based on Texas Cone Penetrometer (TCP) blow counts. This approach is found to have limitations related to maximum number of blows, rock characterization, and difficulty in incorporating influential parameters. Problematic …

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Localized Treatment Of Malignant Melanoma Using A Modified Cellulose-Based Hydrogel Loaded With Temozolomide With Increased Safety Of Human Dermal Fibroblasts And The Mechanisms Behind The Effect, Joseph Wolf Aug 2021

Localized Treatment Of Malignant Melanoma Using A Modified Cellulose-Based Hydrogel Loaded With Temozolomide With Increased Safety Of Human Dermal Fibroblasts And The Mechanisms Behind The Effect, Joseph Wolf

Bioengineering Dissertations - Archive

Melanoma pathophysiology is highly varied, and the initial cause of tumorigenesis is still unknown, but it is likely a combination of both epigenetic and genetic means. Further, melanoma tumors have one of the highest mutational burdens of all cancers and are largely composed of varied subpopulations within the same tumor. These two factors provide insight into why melanoma is so difficult to treat medicinally. Dacarbazine is the gold-standard of metastatic melanoma treatment, yet only has an overall response rate of 22% and no impact on survival. Temozolomide (TMZ), an analog of dacarbazine, is often viewed as a more ideal choice …

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Evaluation Of A Personal Mobile Trainer System Designed For Facilitating Exercise Therapy For Traumatic Brain Injury Patients, Ahmad Fawzi G Turki Aug 2021

Evaluation Of A Personal Mobile Trainer System Designed For Facilitating Exercise Therapy For Traumatic Brain Injury Patients, Ahmad Fawzi G Turki

Bioengineering Dissertations - Archive

There are no effective pharmacological agents that can prevent or treat post-TBI cognitive deterioration. Previous research has shown that exercise can be an effective means of enhancing the patients condition with mild traumatic brain injury (TBI). However, compliance with the prescribed exercise regimen has been low, as TBI patients often suffer from poor executive function and need assistance with complying with their prescribed exercise program. This study aims to design, build, and test a system based on a wearable exercise tracker to assist and encourage patients by facilitating doing the prescribed exercises at a place and time that is convenient …

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Porcine Neonatal Heart Extracellular Matrix As A Regeneration Platform, Karla Perez Aug 2021

Porcine Neonatal Heart Extracellular Matrix As A Regeneration Platform, Karla Perez

Bioengineering Dissertations - Archive

Each year, an estimated 620,000 Americans have new heart attack and suffer from myocardial infarction (MI) that results in massive heart cell death and decrease in heart function. Various therapeutic strategies, such as pharmacological treatments and reperfusion strategies, have greatly improved short-term MI survival. However, these strategies do not restore normal cardiac function due to the permanent loss of cardiomyocytes. As a promising strategy, cardiac cell therapy delivers repairing cells to damaged areas (scar tissues) to revitalize the infracted heart. However, a key challenge in cardiac cell therapy, i.e. the extremely low survival and engraftment rate of transplanted cells, must …

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Environmental And Health Implications Of Mine Tailing-Based Construction Materials In Developing Communities: Current Practices And Ways Forward, Jose Raul Velasquez Vasquez Aug 2021

Environmental And Health Implications Of Mine Tailing-Based Construction Materials In Developing Communities: Current Practices And Ways Forward, Jose Raul Velasquez Vasquez

Civil Engineering Theses - Archive

For many years, artisanal and small-scale mining (ASM) communities around the world have been developing strategies to reduce contaminated mine tailings produced by mineral processing operations. These mine tailings are the by-product of the physical and chemical processes required to extract metals that humans require every day. The strategies developed by these communities cover a wide range of solutions, such as better practices in mineral processing activities as well as alternative technologies that help reduce the environmental impact of mining. Specifically, the recycling of mine tailings to produce construction materials has been of interest to researchers and communities. The use …

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A New Geothermal Bridge De-Icing System With Attached Hydronic Heating Loops: Field Tests, Numerical Modeling, And Economic Assessment, Omid Habibzadeh Bigdarvish Aug 2021

A New Geothermal Bridge De-Icing System With Attached Hydronic Heating Loops: Field Tests, Numerical Modeling, And Economic Assessment, Omid Habibzadeh Bigdarvish

Civil Engineering Dissertations - Archive

Each year, ice and snow adversely impact U.S. transportation infrastructure during the cold season, causing an extensive impact on the U.S. economy. Bridges are key elements in the transportation network and the most vulnerable sections of the road to ice and snow. Conventional snow and ice removal system (CSRS) is proven not to be a satisfactory solution as it causes induced damages and issues, such as accelerating bridge deck corrosion, safety issues, travel delays, and environmental damages. Thus, the geothermal heat pump de-icing system (GHDS) is introduced as a sustainable solution for bridge deck de-icing, which utilizes renewable geothermal energy …

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