Open Access. Powered by Scholars. Published by Universities.®
- Institution
-
- University of Nebraska - Lincoln (4203)
- Missouri University of Science and Technology (1696)
- Utah State University (1339)
- Old Dominion University (998)
- University of Arkansas, Fayetteville (992)
-
- New Jersey Institute of Technology (970)
- University of Kentucky (955)
- California Polytechnic State University, San Luis Obispo (908)
- University of Central Florida (849)
- Purdue University (836)
- Clemson University (736)
- Louisiana State University (702)
- Brigham Young University (617)
- Chulalongkorn University (589)
- Marquette University (582)
- Air Force Institute of Technology (579)
- Michigan Technological University (556)
- University of South Florida (545)
- Wright State University (543)
- Engineering Conferences International (537)
- Washington University in St. Louis (503)
- Technological University Dublin (489)
- TÜBİTAK (461)
- University of South Carolina (429)
- University of Texas at Arlington (409)
- Portland State University (388)
- National Taiwan Ocean University (381)
- University of New Mexico (369)
- University of Texas at El Paso (366)
- Virginia Commonwealth University (365)
- Keyword
-
- Engineering (475)
- Machine learning (362)
- Applied sciences (331)
- Nanoparticles (254)
- Microfluidics (215)
-
- Machine Learning (212)
- Deep learning (202)
- Optimization (192)
- Sustainability (186)
- Cancer (173)
- Water quality (171)
- Modeling (167)
- Tissue engineering (165)
- Computer Science (157)
- Biomaterials (148)
- Wastewater (141)
- Biomechanics (138)
- Simulation (137)
- Nanotechnology (136)
- Adsorption (131)
- Drug delivery (128)
- Artificial intelligence (118)
- UWRL (114)
- Deep Learning (112)
- Robotics (111)
- Biomedical Sciences (109)
- Electrospinning (109)
- Biomass (108)
- Groundwater (105)
- Doctor of Philosophy (PhD) School of Engineering (102)
- Publication Year
- Publication
-
- Theses and Dissertations (1952)
- Nebraska Tractor Tests (1352)
- Electronic Theses and Dissertations (993)
- Department of Agricultural and Biological Systems Engineering: Faculty Publications (825)
- Theses (730)
-
- USF Tampa Graduate Theses and Dissertations (522)
- Dissertations (500)
- Faculty Publications (475)
- Turkish Journal of Electrical Engineering and Computer Sciences (461)
- Master's Theses (448)
- Graduate Theses and Dissertations (394)
- Masters Theses (394)
- McKelvey School of Engineering Graduate Student Theses & Dissertations (388)
- Journal of Marine Science and Technology–Taiwan (381)
- LSU Master's Theses (370)
- All Theses (367)
- Chulalongkorn University Theses and Dissertations (Chula ETD) (353)
- Doctoral Dissertations (338)
- Electrical and Computer Engineering Faculty Research & Creative Works (326)
- Browse all Theses and Dissertations (318)
- All Dissertations (313)
- All Graduate Theses and Dissertations, Spring 1920 to Summer 2023 (307)
- Open Access Theses & Dissertations (300)
- Chemical and Biochemical Engineering Faculty Research & Creative Works (273)
- LSU Doctoral Dissertations (271)
- Biomedical Engineering Faculty Research and Publications (257)
- Dissertations and Theses (225)
- Articles (205)
- Civil and Environmental Engineering Faculty Publications (190)
- Department of Mechanical and Materials Engineering: Faculty Publications (190)
- Publication Type
Articles 28051 - 28080 of 34239
Full-Text Articles in Entire DC Network
Analysis And Experiments For Tendril-Type Robots, Lara Cowan
Analysis And Experiments For Tendril-Type Robots, Lara Cowan
All Theses
New models for the Tendril continuous backbone robot, and other similarly constructed robots, are introduced and expanded upon in this thesis. The ability of the application of geometric models to result in more precise control of the Tendril manipulator is evaluated on a Tendril prototype. We examine key issues underlying the design and operation of 'soft' robots featuring continuous body ('continuum') elements. Inspiration from nature is used to develop new methods of operation for continuum robots. These new methods of operation are tested in experiments to evaluate their effectiveness and potential.
Storm Water Export Of Nitrogen, Phosphorous, And Carbon From Developing Catchments In The Upper Piedmont Physiographic Province, Laura Reid
All Theses
Impacts on water quality caused by land use change from forests and pastures to housing subdivisions were evaluated in catchments undergoing active development in the upper Piedmont physiographic province of South Carolina. Specific attention was focused on the export of nitrogen, phosphorus and carbon from these catchments during storm events. Three catchments with varying stages of development were compared to categorize the effects of land disturbance. Storm events occurring within a four year period of 2004 through 2007 were studied for changes in water quality within catchment streams. Due to the potential large input of surface runoff to streams following …
Promoting Neuron Adhesion And Growth, Laura M. Y. Yu, Nic Leipzig, Molly S. Schoichet
Promoting Neuron Adhesion And Growth, Laura M. Y. Yu, Nic Leipzig, Molly S. Schoichet
Chemical, Biomolecular, and Corrosion Engineering Faculty Research
During nervous system development, the extracellular matrix (ECM) plays a pivotal role offering anchorage points to maturing neurons and neurites, as well as a permissive environment for tissue formation. Thus enhancement of cell adhesion is often an important criterion when designing biomaterials for neural tissue engineering. In addition to functionalizing biomaterials with ECM-derived cell adhesive molecules, there is emerging evidence that indicates the surface topography, stiffness, and electrical properties play an important role in neuron adhesion and neurite outgrowth. We describe recent developments in biomaterials modification for simulating the microenvironment in order to promote neuron adhesion and growth, as well …
2008 Epa’S Report On The Environment
2008 Epa’S Report On The Environment
United States Environmental Protection Agency: Publications
To accomplish its mission, the U.S. Environmental Protection Agency (EPA) must pay close attention to trends in the condition of the nation’s air, water, and land, and to associated trends in human exposure and health and the condition of ecological systems. Data on environmental trends serve two key purposes: they provide valuable input to EPA in developing its strategic outlook and priorities, and they allow EPA and the public to assess whether the Agency is succeeding in its overall mission to protect human health and the environment. EPA prepared this Report on the Environment (ROE) to accomplish these purposes.
In …
The Effects Of Physical And Chemical Modulating Agents On The Induction Of Vaccine-Induced Immune Responses, Andrea Nicole Ryan
The Effects Of Physical And Chemical Modulating Agents On The Induction Of Vaccine-Induced Immune Responses, Andrea Nicole Ryan
Honors Scholar Theses
After the development of the viral-based prostate cancer vaccine, Ad5-PSA, much research has been orientated to help enhance the induced immune response by combining the vaccine with physical and chemical modulating agents, more specifically the polymers polyethylenimine (PEI), chitosan, and chitosan coated with CD3 complex antibodies; all previously shown to stimulate an immune response as isolated gene carriers. To compare the vaccine-induced immune responses between the naked vaccine and the polymer-vaccine combinations, a mouse model using the ovalbumin- specific Ad-OVA vaccine was tested using intracellular cytokine staining (ICS), tetramer staining, and cytotoxic T-cell lymphocyte assays to measure the activation of …
On New Applications And Sensitivity Enhancement Of Cantilever-Based Sensing Systems, Calvin Bradley
On New Applications And Sensitivity Enhancement Of Cantilever-Based Sensing Systems, Calvin Bradley
All Theses
Cantilever-based Sensing Systems (CSS) have become a focal area for research with the rise of micro- and nanotechnology. History has led us to use cantilever beams as one of the foremost sensing devices for small scale applications, beginning with the atomic force microscopy, and then being expanded into numerous sensor devices. The CSS include such applications as accelerometers, thermal and chemical sensors which are expanding into the applications of mass sensing and material characterization. Soon, this technology may be used in 'lab on chip' biosensing applications.
This study covers the experimentation into new CSS applications and sensitivity enhancement. In order …
A Systems Approach To The Design Of A Two Dimensional Cell Printer, Albert Hill
A Systems Approach To The Design Of A Two Dimensional Cell Printer, Albert Hill
All Theses
Tissue engineering research has the potential to improve the current opportunities for replacement organs and tissues. Precise placement of cells has proven difficult in the early stages of this research. Bioprinting is an important research area that has the potential to accurately position cells and biological materials for tissue engineering. This paper describes the attempt to obtain micrometer accuracy in the placement of cells using a systems approach and technology derived from the Hewlett Packard 500 series of printers and their cartridges the HP26 series. The paper discusses the research and design of a custom printing system that allows control …
Zeolite Thin Film-Coated Long Period Fiber Grating Sensor For Measuring Trace Chemical, Jian Zhang, Xiling Tang, Junhang Dong, Tao Wei, Hai Xiao
Zeolite Thin Film-Coated Long Period Fiber Grating Sensor For Measuring Trace Chemical, Jian Zhang, Xiling Tang, Junhang Dong, Tao Wei, Hai Xiao
Electrical and Computer Engineering Faculty Research & Creative Works
This paper reports the development of a new zeolite thin film-coated long period fiber grating (LPFG) sensor for direct measurement of trace organic vapors. The sensor was fabricated by growing pure silica MFI-type zeolite thin film on the optical fiber grating by in situ hydrothermal crystallization. The sensor measures chemical vapor concentration by monitoring the molecular adsorption-induced shift of LPFG resonant wavelength in near infrared (IR) region. Upon loading analyte molecules, the zeolite's refractive index changes in the close vicinity of the fiber index where the LPFG has a large response to achieve high sensitivity.
Conversion Of Biomass Resource To Useful Forms Of Energy And Other Products, Steven Jennings
Conversion Of Biomass Resource To Useful Forms Of Energy And Other Products, Steven Jennings
Chemical Engineering Undergraduate Honors Theses
The United States is facing increasing pressure to find renewable energy sources due to rising energy costs. With world energy demand at an all time high, renewable energy has been thrust into the forefront of research as a means to mitigate this looming crisis. Throughout the United States, there is a large quantity of agricultural biomass that could be used to generate energy and lessen the dependence on diminishing resources. Specifically, animal feeding operations (AFOs) such as dairies generate large amounts of cow manure, which, when improperly handled, causes both air and water pollution. Currently, most manure is temporarily stockpiled …
The Effect Of Water Extracted Silibinin On Reactive Oxygen Species (Ros) Production Of Macrophages, Julie Abbott, Sunny Wallace, Ed Clausen, Danielle Carrier
The Effect Of Water Extracted Silibinin On Reactive Oxygen Species (Ros) Production Of Macrophages, Julie Abbott, Sunny Wallace, Ed Clausen, Danielle Carrier
Biological and Agricultural Engineering Undergraduate Honors Theses
The world is actively looking for technology to produce sustainable liquid fuels to replace our reliance on petroleum-based fuels. Biomass can be converted either through the thermochemical or saccharification platforms into fuels such as ethanol or butanol. In addition to converting the biomass into liquid fuels, valuable phytochemicals can be extracted prior, during, or after the conversion. Extracting useful phytochemicals, as a part of the overall conversion of biomass to fuels, is included in the concept of the biobased biorefinery. However, the key to effectively and economically extract phytochemicals from biomass is the ability to couple the extraction to the …
Bioengineering Cartilage Growth, Maturation, And Form, Gregory M. Williams, Stephen M. Klisch, Robert L. Sah
Bioengineering Cartilage Growth, Maturation, And Form, Gregory M. Williams, Stephen M. Klisch, Robert L. Sah
Mechanical Engineering
Cartilage of articular joints grows and matures to achieve characteristic sizes, forms, and functional properties. Through these processes, the tissue not only serves as a template for bone growth but also yields mature articular cartilage providing joints with a low-friction, wear-resistant bearing material. The study of cartilage growth and maturation is a focus of both cartilage biologists and bioengineers with one goal of trying to create biologic tissue substitutes for the repair of damaged joints. Experimental approaches both in vivo and in vitro are being used to better understand the mechanisms and regulation of growth and maturation processes. This knowledge …
Aquatic Bacteria Removal Using Carbon Nanotubes, Suvish Melanta
Aquatic Bacteria Removal Using Carbon Nanotubes, Suvish Melanta
Biological and Agricultural Engineering Undergraduate Honors Theses
The purpose of this project is to explore the functionality of carbon nanotubes as a bacterial removal method, specifically towards water-borne bacterial pathogens in wastewater by utilizing its unique magnetic and bacteria-binding properties. The general protocol set for this research follows five steps: 1) Preparation of wastewater media, 2) preparation of CNT culture, 3) preparation of reaction mixture with CNTs for bacterial binding, 4) magnetic separation of bacteria-bound-CNT clusters and, 5) assessment of supernatant. The CNTs effectively removed bacterial contaminants in the wastewater (10%, v/v) after the sand filtration process from the Paul R. Noland Wastewater Facility at Fayetteville, Arkansas. …
Computational Modeling Of Oxidative Stress: An Analysis Of Nad (P)H Effects On Nitric Oxide And Superoxide During Hypertension, Aaron Strobel
Computational Modeling Of Oxidative Stress: An Analysis Of Nad (P)H Effects On Nitric Oxide And Superoxide During Hypertension, Aaron Strobel
Biological and Agricultural Engineering Undergraduate Honors Theses
Nitric oxide (NO) is inactivated in the human body when exposed to superoxide (O2 -). This reaction forms peroxynitrite (ONOO-). Superoxide is produced in the cardiac system by several different ways, including NAD(P)H oxidase. Superoxide dismutase (SOD) breaks down superoxide into oxygen and hydrogen peroxide. This prevents superoxide from reacting with nitric oxide and allows normal function to take place. Superoxide and peroxynitrite are main contributors to vascular disease in the human body, in particular hypertension. Experiments have shown that there was an increase of superoxide production in spontaneously hypertensive rats (SHR) vs. age-matched Wistar Kyoto rats (WKY) that were …
Kinetics Determination Of Soybean Oil Transesterification In The Design Of A Continuous Biodiesel Production Process, Irwin Jacob, Ed Clausen, Danielle Julie Carrier
Kinetics Determination Of Soybean Oil Transesterification In The Design Of A Continuous Biodiesel Production Process, Irwin Jacob, Ed Clausen, Danielle Julie Carrier
Biological and Agricultural Engineering Undergraduate Honors Theses
One-step batch transesterification consisting of three stepwise reversible reactions of pure soybean oil with methanol was conducted at two different mixing speeds (600 and 300 rpm) to produce soybean oil fatty acid methyl esters (biodiesel). In both batch reactions, sodium methoxide (1.09 wt% based on soybean oil) was used as the catalyst, the reaction temperature was 60oC, and the methanol-to-oil molar ratio was 6:1. The objectives were to determine and/or investigate: 1) the mechanism and order of the reaction, 2) the reaction rate constants, 3) the effect of changes in mixing intensity on the reaction rate, 4) the comparison of …
Anaerobic Biodegradation Of Ethylene Dibromide And 1,2-Dichloroethane In The Presence Of Fuel Hydrocarbons, James Henderson
Anaerobic Biodegradation Of Ethylene Dibromide And 1,2-Dichloroethane In The Presence Of Fuel Hydrocarbons, James Henderson
All Dissertations
Field evidence from underground storage tank (UST) sites where leaded gasoline leaked indicates the lead scavengers 1,2-dibromoethane (ethylene dibromide, or EDB) and 1,2-dichloroethane (1,2-DCA) may be present in groundwater at levels that pose unacceptable risk. These compounds are seldom tested for at UST sites. Although dehalogenation of EDB and 1,2-DCA is known to occur, the effect of fuel hydrocarbons on their biodegradability under anaerobic conditions is poorly understood. Microcosms (2 L glass bottles) were prepared with soil and groundwater from a UST site in Clemson, South Carolina, using samples collected from the source (containing residual fuel) and less contaminated downgradient …
Dna Comparison Chip: Circuit Design And Evaluation, Tushar Bajaj
Dna Comparison Chip: Circuit Design And Evaluation, Tushar Bajaj
Electrical Engineering Undergraduate Honors Theses
The purpose of this project was to: First, design a microchip that is capable of comparing strings of DNA sequences. Second, evaluate the functioning of such a microchip and how it can implemented in various real world applications. Physically, this microchip will act as an attachment to any computer. The computer will send two strings of DNA sequences-one library string and one pattern string-and the chip will output the number of matches that exist between the two strings (at a given position of the pattern string with respect to the library string). The circuit design is based on a 600 …
Restart Capabilities Of Hybrid Rocket Motor Utilizing Gaseous Propane And Oxygen Injection System, Joseph Gracy
Restart Capabilities Of Hybrid Rocket Motor Utilizing Gaseous Propane And Oxygen Injection System, Joseph Gracy
Mechanical Engineering Undergraduate Honors Theses
Hybrid rockets have become an increasingly popular application in professional and amateur rocketry for their outstanding performance and reliability. An issue pressing the marketability and functionality of these rockets is the ability to restart with an exclusive system after primary ignition. Research and development of a system that can be used reliably in either application to achieve restart under various conditions has been made recently using dual injection of GOX and C3H8 using a 200kV ignition system while implementing a polymethylmethacrylate (PMMA) formable polymer as primary fuel. The system used a manual valve arrangement for control. The design features most …
Development Of Low Temperature Alpha Alumina Coatings By Ac Magnetron Sputtering, Andrew Cloud
Development Of Low Temperature Alpha Alumina Coatings By Ac Magnetron Sputtering, Andrew Cloud
Mechanical Engineering Undergraduate Honors Theses
Alpha-phase aluminum oxide thin films were created using an Isoflux ICM-10 dual target inverted cylindrical magnetron sputtering system using mid-frequency AC power supplies. Alpha alumina films were deposited at a magnetron power of 6 kW, 50% oxygen partial pressure by volume, and -35 V DC bias. Film thickness, substrate material, and position and orientation within the deposition chamber were varied. To ensure the deposition conditions are suitable for alloys, the substrate temperature was measured using temperature indicating liquids. The experimental results, supported by Explicit Euler numerical analysis, revealed a steady state temperature of ~480°C at 6kW. Transmission electron microscopy (TEM) …
Mathematical Modeling Of Oral Cavity Mucositis, Jason White
Mathematical Modeling Of Oral Cavity Mucositis, Jason White
Honors Scholar Theses
Oral Mucositis is a condition seen in post-treatment mouth cancer patients and is a condition of which the pathobiology is not entirely known. It is a condition that shares many common pathways with other alimentary tract injuries such as inflammatory bowel disease. Mathematical modeling of the system can help to identify gaps in the current knowledge base as well as assist in generating new hypotheses and predicting clinical outcomes of conditions. A detailed mathematical model would assist researchers in determining which drug targets are worthwhile investigating. Deterministic modeling and Virtual Cell&#; software were used to assign rate constants to each …
Effect Of Shear On Performance And Microbial Ecology Of Continuously Stirred Anaerobic Digesters Treating Animal Manure, Rebecca A. Hoffmann, Marcelo L. Garcia, Mehul Veskivar, Khursheed Karim, Muthanna H. Al-Dahhan, Largus T. Angenent
Effect Of Shear On Performance And Microbial Ecology Of Continuously Stirred Anaerobic Digesters Treating Animal Manure, Rebecca A. Hoffmann, Marcelo L. Garcia, Mehul Veskivar, Khursheed Karim, Muthanna H. Al-Dahhan, Largus T. Angenent
Chemical and Biochemical Engineering Faculty Research & Creative Works
We Determined the Effect of Different Mixing Intensities on the Performance, Methanogenic Population Dynamics, and Juxtaposition of Syntrophic Microbes in Anaerobic Digesters Treating Cow Manure from a Dairy Farm. Computer Automated Radioactive Particle Tracking in Conjunction with Computational Fluid Dynamics Was Performed to Quantify the Shear Levels Locally. Four Continuously Stirred Anaerobic Digesters Were Operated at Different Mixing Intensities of 1,500, 500, 250, and 50 Revolutions Per Min (RPM) over a 260-Day Period at a Temperature of 34 ± 1°C. Animal Manure at a Volatile Solids (VS) Concentration of 50 G/L Was Fed into the Digesters Daily at Five Different …
Artificial Neural Network Estimation Of Soil Erosion And Nutrient Concentrations In Runoff From Land Application Areas, Minyoung Kim, John E. Gilley
Artificial Neural Network Estimation Of Soil Erosion And Nutrient Concentrations In Runoff From Land Application Areas, Minyoung Kim, John E. Gilley
Department of Agricultural and Biological Systems Engineering: Faculty Publications
The transport of sediment and nutrients from land application areas is an environmental concern. New methods are needed for estimating soil and nutrient concentrations of runoff from cropland areas on which manure is applied. Artificial Neural Networks (ANNs) trained with a backpropagation (BP) algorithm were used to estimate soil erosion, dissolved P (DP) and NH4–N concentrations of runoff from a land application site near Lincoln, Nebraska, USA. Simulation results from ANN-derived models showed that the amount of soil eroded is positively correlated with rainfall and runoff. In addition, concentrations of DP and NH4–N in overland flow …
Cellular Arrays (Us Patent Application), Angela K. Pannier, Eric A. Ariazi, V. Craig Jordan, Lonnie D. Shea
Cellular Arrays (Us Patent Application), Angela K. Pannier, Eric A. Ariazi, V. Craig Jordan, Lonnie D. Shea
Department of Agricultural and Biological Systems Engineering: Faculty Publications
The present invention relates to characterizing transcription within cells. In particular, the present invention provides transfected cell arrays (e.g., two-dimensional and/or three-dimensional arrays) and systems, kits and methods utilizing the same (e.g., for transcriptional activity characterization). Compositions and methods of the present invention find use in, among other things, research, drug discovery and clinical (e.g., diagnostic, preventative and therapeutic) applications.
Narrow Grass Hedge Effects On Nutrient Transport Following Compost Application, John E. Gilley, Bahman Eghball, David B. Marx
Narrow Grass Hedge Effects On Nutrient Transport Following Compost Application, John E. Gilley, Bahman Eghball, David B. Marx
Department of Agricultural and Biological Systems Engineering: Faculty Publications
The placement of stiff‐stemmed grass hedges on the contour along a hillslope has been shown to decrease nutrient transport in runoff. This study was conducted to measure the effectiveness of a narrow grass hedge in reducing runoff nutrient transport from plots with a range of soil nutrient values. Composted beef cattle manure was applied at dry weights of 0, 68, 105, 142, and 178 Mg ha-1 to a silty clay loam soil and then incorporated by disking. Soil samples were collected 243 days later for analysis of water‐soluble phosphorus (WSP), Bray and Kurtz No. 1 phosphorus (Bray‐1 P), NO …
Micro Air Vehicle (Mav): Numerical Optimization Of A Coaxial Rotor Blade Design, Jeffrey A. Kornuta
Micro Air Vehicle (Mav): Numerical Optimization Of A Coaxial Rotor Blade Design, Jeffrey A. Kornuta
Honors Capstones
No abstract provided.
The Awe Wall: A Novel Robotic Surface, Martha Kwoka
The Awe Wall: A Novel Robotic Surface, Martha Kwoka
All Theses
In this thesis, we present fundamental contributions towards AWE, a novel 'Animated Work Environment', which seeks to introduce robotics at the architectural scale to modify environments in real time to the changing needs and moods of their occupants. Part of AWE is a robotic surface, or wall, featuring a multiple folding panel structure. The panels of the AWE wall feature embedded IT and adapt to the current movements and tasks of the user. We describe the overall AWE concept and discuss the construction of the robot surface, its motion planning and its control, and all experiments run to this point.
The Formation Of Halonitromethanes In Wastewater Treatment Plant Effluents, Jesse Addison
The Formation Of Halonitromethanes In Wastewater Treatment Plant Effluents, Jesse Addison
All Theses
Disinfection by-products (DBPs) have been a water treatment concern since their discovery in the 1970's. Today, only eleven drinking water DBPs are regulated by the Environmental Protection Agency (EPA). However, over 500 DBPs have been identified in drinking waters with advances in analytical methods within the last two decades. Halonitromethanes (HNMs) were among the fifty-plus unregulated high-priority DBPs that were monitored for and detected in drinking waters in a recent nationwide occurrence study funded by EPA. The toxicology studies conducted in recent years showed that HNMs are one of the most cytotoxic and genotoxic classes among the emerging DBPs, and …
Laboratory Evaluation Of Chlorinated Ethene Transformation Processes In Fractured Sandstone, Ramona Darlington
Laboratory Evaluation Of Chlorinated Ethene Transformation Processes In Fractured Sandstone, Ramona Darlington
All Dissertations
A fractured sandstone aquifer at an industrial site in southern California is contaminated with trichloroethene (TCE) to depths in excess of 244 m. Field monitoring data suggest that TCE is undergoing reduction to cis-DCE and that additional attenuation is occurring. However, vinyl chloride (VC) and ethene have not been detected in significant amounts, so that if transformation is occurring, a process other than reductive dechlorination must be responsible. The overall objective of this study was to evaluate the occurrence of biotic and abiotic transformation processes at this site for TCE, cis-DCE and VC. Anaerobic microcosms were constructed with site groundwater …
Study Of Electrospinning Of Property-Modulated Biomedical Microfibers, Scott Taylor
Study Of Electrospinning Of Property-Modulated Biomedical Microfibers, Scott Taylor
All Dissertations
Electrospinning technologies have been of great interest in recent years, due in large part to developments in the field of Bioengineering, including the preparation of novel polymers and advances in tissue engineering, specifically for therapeutic applications. The electrospinning process is, in general, a very benign process that allows the preparation, under mild conditions, of micro- and nano-scale fibers from fiberforming materials, as well as traditionally non-fiber forming materials. This process is of specific interest to the biomedical community because it affords an opportunity to create highly-tailored novel constructs with a multitude of possible uses. Some proposed uses for these materials …
Vibration Analysis Of Piezoelectric Microcantilever Sensors, Amin Salehi-Khojin
Vibration Analysis Of Piezoelectric Microcantilever Sensors, Amin Salehi-Khojin
All Dissertations
The main objective of this dissertation is to comprehensively analyze vibration characteristics of microcantilever-based sensors with application to ultra small mass detection and low dimensional materials characterization. The first part of this work focuses on theoretical developments and experimental verification of piezoelectric microcantilevers, commercially named Active Probes, which are extensively used in most today's advanced Atomic Force Microscopy (AFM) systems. Due to special geometry and configuration of Active Probes, especially multiple jump discontinuities in their cross-section, a general and comprehensive framework is introduced for forced vibration and modal analysis of discontinuous flexible beams. More specifically, a general formulation is obtained …
Incorporation Of Polydiacetylene Sensors Into Commercial Polymers, Jennifer Kauffman
Incorporation Of Polydiacetylene Sensors Into Commercial Polymers, Jennifer Kauffman
All Dissertations
Polydiacetylenes (PDAs) exhibit a chromatic response to solvents, temperature, strain and other environmental perturbations. When formed in a solid-state polymerization, the backbone of the polymer is planar and continuous π-overlap is observed. However, when the PDA backbone is distorted by an outside force the extended conjugation is interrupted and an optical shift from blue to red occurs. By exploiting the PDAs properties within polymer systems, smart fibers and films have been created that enhance the original intention of the host. Under this umbrella, a strain sensitive polydiacetylene-polyurethane blend was created using 3 and 4-butoxycarbonylmethylurethane PDA and a medical grade polyurethane, …