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Articles 1 - 30 of 104
Full-Text Articles in Engineering
Manipulation Of Plants By Transformation With Sequences Promoting Cell Division, Victor B. Busov, Steven H. Strauss
Manipulation Of Plants By Transformation With Sequences Promoting Cell Division, Victor B. Busov, Steven H. Strauss
Michigan Tech Patents
Polynucleotides encode polypeptides for increasing the rate of growth of plants. Introduction of the polynucleotides into plants produces plants having altered characteristics, such as increased growth, increased leaf area and reduced fertility. Expression of polypeptides in plants or plant cells promotes cell division. Expression of the polynucleotides in plants in the antisense orientation produces plants that are sterile or have smaller leaves.
Me-Em Enewsbrief, December 2012, Department Of Mechanical Engineering-Engineering Mechanics, Michigan Technological University
Me-Em Enewsbrief, December 2012, Department Of Mechanical Engineering-Engineering Mechanics, Michigan Technological University
Department of Mechanical Engineering-Engineering Mechanics eNewsBrief
No abstract provided.
Docking System Design And Self-Assembly Control Of Distributed Swarm Flying Robots, Hongxing Wei, Ning Li, Yong Tao, Youdong Chen, Jindong Tan
Docking System Design And Self-Assembly Control Of Distributed Swarm Flying Robots, Hongxing Wei, Ning Li, Yong Tao, Youdong Chen, Jindong Tan
Michigan Tech Publications
This paper presents a novel docking system design and the distributed self-assembly control strategy for a Distributed Swarm Flying Robot (DSFR). The DSFR is a swarm robot comprising many identical robot modules that are able to move on the ground, dock with each other and fly coordinately once self-assembled into a robotic structure. A generalized adjacency matrix method is proposed to describe the configurations of robotic structures. Based on the docking system and the adjacency matrix, experiments are performed to demonstrate and verify the self-assembly control strategy.
Me-Em Enewsbrief, September 2012, Department Of Mechanical Engineering-Engineering Mechanics, Michigan Technological University
Me-Em Enewsbrief, September 2012, Department Of Mechanical Engineering-Engineering Mechanics, Michigan Technological University
Department of Mechanical Engineering-Engineering Mechanics eNewsBrief
No abstract provided.
Nox Control Systems And Methods For Controlling Nox Emissions, Maruthi Devarakonda, Gordon Parker, John Johnson
Nox Control Systems And Methods For Controlling Nox Emissions, Maruthi Devarakonda, Gordon Parker, John Johnson
Michigan Tech Patents
An exhaust aftertreatment system comprising a selective reduction catalyst, a NOx sensor or an NH3 sensor, a urea injector, and a dosing control unit, wherein the dosing control unit calculates the rate of urea injection by estimating the concentrations of NO and NO2 in the exhaust downstream of the SCR catalyst.
World Energy Balance Outlook And Opec Production Capacity: Implications For Global Oil Security, Ali Mirchi, Saeed Hadian, Kaveh Madani, Omid M. Rouhani, Azadeh M. Rouhani
World Energy Balance Outlook And Opec Production Capacity: Implications For Global Oil Security, Ali Mirchi, Saeed Hadian, Kaveh Madani, Omid M. Rouhani, Azadeh M. Rouhani
Michigan Tech Publications
The imbalance between energy resource availability, demand, and production capacity, coupled with inherent economic and environmental uncertainties make strategic energy resources planning, management, and decision-making a challenging process. In this paper, a descriptive approach has been taken to synthesize the world’s energy portfolio and the global energy balance outlook in order to provide insights into the role of Organization of Petroleum Exporting Countries (OPEC) in maintaining “stability” and “balance” of the world’s energy market. This synthesis illustrates that in the absence of stringent policies, i.e., if historical trends of the global energy production and consumption hold into the future, it …
Summer 2012 Biomedical Engineering Newsletter, Department Of Biomedical Engineering, Michigan Technological University
Summer 2012 Biomedical Engineering Newsletter, Department Of Biomedical Engineering, Michigan Technological University
Department of Biomedical Engineering Newsletters
Table of Contents
- Dr. Jeremy Goldman wins a Fulbright Scholarship
- Research updates
- Hal Holmes named Goldwater Scholar
- Top honors at the Undergraduate Expo
Me-Em Enewsbrief, June 2012, Department Of Mechanical Engineering-Engineering Mechanics, Michigan Technological University
Me-Em Enewsbrief, June 2012, Department Of Mechanical Engineering-Engineering Mechanics, Michigan Technological University
Department of Mechanical Engineering-Engineering Mechanics eNewsBrief
No abstract provided.
The Case For Open Source Appropriate Technology, Joshua M. Pearce
The Case For Open Source Appropriate Technology, Joshua M. Pearce
Michigan Tech Publications
Much of the widespread poverty, environmental desecration, and waste of human life seen around the globe could be prevented by known (to humanity as a whole) technologies, many of which are simply not available to those that need it. This lack of access to critical information for sustainable development is directly responsible for a morally and ethically unacceptable level of human suffering and death. A solution to this general problem is the concept of open source appropriate technology or OSAT, which refers to technologies that provide for sustainable development while being designed in the same fashion as free and open …
Micrometeorological Measurement Of Hexachlorobenzene And Polychlorinated Biphenyl Compound Air-Water Gas Exchange In Lake Superior And Comparison To Model Predictions, M. D. Rowe, J A Perlinger
Micrometeorological Measurement Of Hexachlorobenzene And Polychlorinated Biphenyl Compound Air-Water Gas Exchange In Lake Superior And Comparison To Model Predictions, M. D. Rowe, J A Perlinger
Michigan Tech Publications
Air-water exchange fluxes of persistent, bioaccumulative and toxic (PBT) substances are frequently estimated using the Whitman two-film (W2F) method, but micrometeorological flux measurements of these compounds over water are rarely attempted. We measured air-water exchange fluxes of hexachlorobenzene (HCB) and polychlorinated biphenyls (PCBs) on 14 July 2006 in Lake Superior using the modified Bowen ratio (MBR) method. Measured fluxes were compared to estimates using the W2F method, and to estimates from an Internal Boundary Layer Transport and Exchange (IBLTE) model that implements the NOAA COARE bulk flux algorithm and gas transfer model. We reveal an inaccuracy in the estimate of …
Methods For Enhancing Expression Of Secondary Cell Wall Cellulose Synthases In Plants, Chandrashekhar P. Joshi
Methods For Enhancing Expression Of Secondary Cell Wall Cellulose Synthases In Plants, Chandrashekhar P. Joshi
Michigan Tech Patents
Described are methods for making transgenic plants capable of expressing secondary cell wall cellulose synthases and methods of enhancing expression of secondary cell wall cellulose synthases in plants. Also described are plants produced by the methods. Plants comprising at least three exogenous polynucleotides encoding secondary cell wall cellulose synthases are also provided.
Me-Em Enewsbrief, March 2012, Department Of Mechanical Engineering-Engineering Mechanics, Michigan Technological University
Me-Em Enewsbrief, March 2012, Department Of Mechanical Engineering-Engineering Mechanics, Michigan Technological University
Department of Mechanical Engineering-Engineering Mechanics eNewsBrief
No abstract provided.
Impacts Of Changes In Land Use And Land Cover On Atmospheric Chemistry And Air Quality Over The 21st Century, S. Wu, L. J. Mickley, J. O. Kaplan, D. J. Jacob
Impacts Of Changes In Land Use And Land Cover On Atmospheric Chemistry And Air Quality Over The 21st Century, S. Wu, L. J. Mickley, J. O. Kaplan, D. J. Jacob
Michigan Tech Publications
The effects of future land use and land cover change on the chemical composition of the atmosphere and air quality are largely unknown. To investigate the potential effects associated with future changes in vegetation driven by atmospheric CO 2 concentrations, climate, and anthropogenic land use over the 21st century, we performed a series of model experiments combining a general circulation model with a dynamic global vegetation model and an atmospheric chemical-transport model. Our results indicate that climate-and CO 2-induced changes in vegetation composition and density between 2100 and 2000 could lead to decreases in summer afternoon surface ozone of up …
The Influence Of Boreal Biomass Burning Emissions On The Distribution Of Tropospheric Ozone Over North America And The North Atlantic During 2010, M. Parrington, P. I. Palmer, D. K. Henze, D. W. Tarasick, E. J. Hyer, R. C. Owen, D. Helmig, C. Clerbaux, K. W. Bowman, M. N. Deeter, E. M. Barratt, P. F. Coheur, D. Hurtmans, Z. Jiang, M. George, J. R. Worden
The Influence Of Boreal Biomass Burning Emissions On The Distribution Of Tropospheric Ozone Over North America And The North Atlantic During 2010, M. Parrington, P. I. Palmer, D. K. Henze, D. W. Tarasick, E. J. Hyer, R. C. Owen, D. Helmig, C. Clerbaux, K. W. Bowman, M. N. Deeter, E. M. Barratt, P. F. Coheur, D. Hurtmans, Z. Jiang, M. George, J. R. Worden
Michigan Tech Publications
We have analysed the sensitivity of the tropospheric ozone distribution over North America and the North Atlantic to boreal biomass burning emissions during the summer of 2010 using the GEOS-Chem 3-D global tropospheric chemical transport model and observations from in situ and satellite instruments. We show that the model ozone distribution is consistent with observations from the Pico Mountain Observatory in the Azores, ozonesondes across Canada, and the Tropospheric Emission Spectrometer (TES) and Infrared Atmospheric Sounding Instrument (IASI) satellite instruments. Mean biases between the model and observed ozone mixing ratio in the free troposphere were less than 10 ppbv. We …
Fabrication Of Biocompatible, Vibrational Magnetoelastic Materials For Controlling Cellular Adhesion, Hal Holmes, Ee Lim Tan, Keat Ghee Ong, Rupak Rajachar
Fabrication Of Biocompatible, Vibrational Magnetoelastic Materials For Controlling Cellular Adhesion, Hal Holmes, Ee Lim Tan, Keat Ghee Ong, Rupak Rajachar
Michigan Tech Publications
This paper describes the functionalization of magnetoelastic (ME) materials with Parylene-C coating to improve the surface reactivity to cellular response. Previous study has demonstrated that vibrating ME materials were capable of modulating cellular adhesion when activated by an externally applied AC magnetic field. However, since ME materials are not inherently biocompatible, surface modifications are needed for their implementation in biological settings. Here, the long-term stability of the ME material in an aqueous and biological environment is achieved by chemical-vapor deposition of a conformal Parylene-C layer, and further functionalized by methods of oxygen plasma etching and protein adsorption. In vitro cytotoxicity …
Multi-Scale Gis Data-Driven Method For Early Assessment Of Wetlands Impacted By Transportation Corridors, Rodrigo Nobrega, Colin Brooks, Charles O'Hara, Bethany Stich
Multi-Scale Gis Data-Driven Method For Early Assessment Of Wetlands Impacted By Transportation Corridors, Rodrigo Nobrega, Colin Brooks, Charles O'Hara, Bethany Stich
Michigan Tech Research Institute Publications
No abstract provided.
Mse Annual Report 2012, Department Of Materials Science And Engineering, Michigan Technological University
Mse Annual Report 2012, Department Of Materials Science And Engineering, Michigan Technological University
Department of Materials Science and Engineering Annual Reports
Table of Contents
- What's that Sound? Wind Harp Brings New Beauty to Campus
- Yongmei Jin and Yu Wang: The MSE Dynamic Duo
- MSE Researcher Creates Better Solar Cells
- Faculty and Staff News
- Updates and Awards
- Alumni at a Glance
Electrospun Chitosan Nanofibers For Virus Removal, Bingyu Bai
Electrospun Chitosan Nanofibers For Virus Removal, Bingyu Bai
Dissertations, Master's Theses and Master's Reports - Open
Electrospinning uses electrostatic forces to create nanofibers that are far smaller than conventional fiber spinning process. Nanofibers made with chitosan were created and techniques to control fibers diameter and were well developed. However, the adsorption of porcine parvovirus (PPV) was low. PPV is a small, nonenveloped virus that is difficult to remove due to its size, 18-26 nm in diameter, and its chemical stability. To improve virus adsorption, we functionalized the nanofibers with a quaternized amine, forming N-[(2-hydroxy-3-trimethylammonium) propyl] chitosan chloride (HTCC). This was blended with additives to increase the ability to form HTCC nanofibers. The additives changed the viscosity …
Life Cycle Assessment Of Biofuels Produced By The New Integrated Hydropyrolysis-Hydroconversion (Ih2) Process, Edwin Maleche
Life Cycle Assessment Of Biofuels Produced By The New Integrated Hydropyrolysis-Hydroconversion (Ih2) Process, Edwin Maleche
Dissertations, Master's Theses and Master's Reports - Open
Biofuels are alternative fuels that have the promise of reducing reliance on imported fossil fuels and decreasing emission of greenhouse gases from energy consumption. This thesis analyses the environmental impacts focusing on the greenhouse gas (GHG) emissions associated with the production and delivery of biofuel using the new Integrated Hydropyrolysis and Hydroconversion (IH2) process. The IH2 process is an innovative process for the conversion of woody biomass into hydrocarbon liquid transportation fuels in the range of gasoline and diesel.
A cradle-to-grave life cycle assessment (LCA) was used to calculate the greenhouse gas emissions associated with diverse feedstocks …
Effect Of External Electric Field On Hydrogen Adsorption Over Activated Carbon Separated By Dielectric Materials, Zheng Zhang
Effect Of External Electric Field On Hydrogen Adsorption Over Activated Carbon Separated By Dielectric Materials, Zheng Zhang
Dissertations, Master's Theses and Master's Reports - Open
Energy crisis and worldwide environmental problem make hydrogen a prospective energy carrier. However, storage and transportation of hydrogen in large quantities at small volume is currently not practical. Lots of materials and devices have been developed for storage hydrogen, but to today none is able to meet the DOE targets.
Activated carbon has been found to be a good hydrogen adsorbent due to its high surface area. However, the weak van der Waals force between hydrogen and the adsorbent has limited the adsorption capacity. Previous studies have found that enhanced adsorption can be obtained with applied electric field. Stronger interaction …
Heat Transfer In Microwave Heating, Zhiwei Peng
Heat Transfer In Microwave Heating, Zhiwei Peng
Dissertations, Master's Theses and Master's Reports - Open
Heat transfer is considered as one of the most critical issues for design and implement of large-scale microwave heating systems, in which improvement of the microwave absorption of materials and suppression of uneven temperature distribution are the two main objectives. The present work focuses on the analysis of heat transfer in microwave heating for achieving highly efficient microwave assisted steelmaking through the investigations on the following aspects: (1) characterization of microwave dissipation using the derived equations, (2) quantification of magnetic loss, (3) determination of microwave absorption properties of materials, (4) modeling of microwave propagation, (5) simulation of heat transfer, and …
Microwave-Assisted Wet Chemical (Mawc) Synthesis Of Lithium Iron Phosphate, Shangzhao Shi
Microwave-Assisted Wet Chemical (Mawc) Synthesis Of Lithium Iron Phosphate, Shangzhao Shi
Dissertations, Master's Theses and Master's Reports - Open
LiFePO4 is a Co-free battery material. Its advantages of low cost, non-toxic and flat discharge plateau show promising for vehicle propulsion applications. A major problem associated with this material is its low electrical conductivity. Use of nanosized LiFePO4 coated with carbon is considered a solution because the nanosized particles have much shorter path for L+ ions to travel from the LiFePO4 crystal lattice to electrolytes. As other nano material powders, however, nano LiFePO4 could have processing and health issues.
In order to achieve high electrical conductivity while maintaining a satisfactory manufacturability, the particles should possess both of the nano- and …
Synthesis Of Pdms-Metal Oxide Hybrid Nanocomposites Using An In Situ Sol-Gel Route, Qiaoyu Lu
Synthesis Of Pdms-Metal Oxide Hybrid Nanocomposites Using An In Situ Sol-Gel Route, Qiaoyu Lu
Dissertations, Master's Theses and Master's Reports - Open
Organic-inorganic hybrid nanocomposites are widely studied and applied in broad areas because of their ability to combine the flexibility, low density of the organic materials with the hardness, strength, thermal stability, good optical and electronic properties of the inorganic materials. Polydimethylsiloxane (PDMS) due to its excellent elasticity, transparency, and biocompatibility has been extensively employed as the organic host matrix for nanocomposites. For the inorganic component, titanium dioxide and barium titanate are broadly explored as they possess outstanding physical, optical and electronic properties.
In our experiment, PDMS-TiO2 and PDMS-BaTiO3 hybrid nanocomposites were fabricated based on in-situ sol-gel technique. By …
Minimizing Residential Distribution System Operating Costs Through Intelligently Scheduled Plug-In Hybrid Electric Vehicle Charging, Nathan Steven Fettinger
Minimizing Residential Distribution System Operating Costs Through Intelligently Scheduled Plug-In Hybrid Electric Vehicle Charging, Nathan Steven Fettinger
Dissertations, Master's Theses and Master's Reports - Open
Rising fuel prices and environmental concerns are threatening the stability of current electrical grid systems. These factors are pushing the automobile industry towards more effcient, hybrid vehicles. Current trends show petroleum is being edged out in favor of electricity as the main vehicular motive force. The proposed methods create an optimized charging control schedule for all participating Plug-in Hybrid Electric Vehicles in a distribution grid. The optimization will minimize daily operating costs, reduce system losses, and improve power quality. This requires participation from Vehicle-to-Grid capable vehicles, load forecasting, and Locational Marginal Pricing market predictions. Vehicles equipped with bidirectional chargers further …
Investigation Into The Enhancement Of Polycarbonate With Conductive Nanomaterials, Michael D. Via Jr.
Investigation Into The Enhancement Of Polycarbonate With Conductive Nanomaterials, Michael D. Via Jr.
Dissertations, Master's Theses and Master's Reports - Open
Polymers are typically electrically and thermally insulating materials. The electrical and thermal conductivities of polymers can be increased by the addition conductive fillers such as carbons. Once the polymer composites have been made electrically and thermally conductive, they can be used in applications where these conductivities are desired such as electromagnetic shielding and static dissipation.
In this project, three carbon nanomaterials are added to polycarbonate to enhance the electrical and thermal conductivity of the resulting composite. Hyperion Catalysis FIBRILs carbon nanotubes were added to a maximum loading of 8 wt%. Ketjenblack EC-600 JD carbon black was added to a maximum …
Managing Server Energy And Reducing Operational Cost For Online Service Providers, Xinying Zheng
Managing Server Energy And Reducing Operational Cost For Online Service Providers, Xinying Zheng
Dissertations, Master's Theses and Master's Reports - Open
The past decade has seen the energy consumption in servers and Internet Data Centers (IDCs) skyrocket. A recent survey estimated that the worldwide spending on servers and cooling have risen to above $30 billion and is likely to exceed spending on the new server hardware . The rapid rise in energy consumption has posted a serious threat to both energy resources and the environment, which makes green computing not only worthwhile but also necessary. This dissertation intends to tackle the challenges of both reducing the energy consumption of server systems and by reducing the cost for Online Service Providers (OSPs). …
Online Distribution Management Framework By Incorporating Wind Generation, Bhairavi Pandya
Online Distribution Management Framework By Incorporating Wind Generation, Bhairavi Pandya
Dissertations, Master's Theses and Master's Reports - Open
In distribution system operations, dispatchers at control center closely monitor system operating limits to ensure system reliability and adequacy. This reliability is partly due to the provision of remote controllable tie and sectionalizing switches. While the stochastic nature of wind generation can impact the level of wind energy penetration in the network, an estimate of the output from wind on hourly basis can be extremely useful. Under any operating conditions, the switching actions require human intervention and can be an extremely stressful task. Currently, handling a set of switching combinations with the uncertainty of distributed wind generation as part of …
Body Sensor Network For In-Home Personal Healthcare, Sheng Hu
Body Sensor Network For In-Home Personal Healthcare, Sheng Hu
Dissertations, Master's Theses and Master's Reports - Open
A body sensor network solution for personal healthcare under an indoor environment is developed. The system is capable of logging the physiological signals of human beings, tracking the orientations of human body, and monitoring the environmental attributes, which covers all necessary information for the personal healthcare in an indoor environment.
The major three chapters of this dissertation contain three subsystems in this work, each corresponding to one subsystem: BioLogger, PAMS and CosNet. Each chapter covers the background and motivation of the subsystem, the related theory, the hardware/software design, and the evaluation of the prototype’s performance.
Robustness Of Speckle Imaging Techniques Applied To Horizontal Imaging Scenarios, Jeremy P. Bos
Robustness Of Speckle Imaging Techniques Applied To Horizontal Imaging Scenarios, Jeremy P. Bos
Dissertations, Master's Theses and Master's Reports - Open
Atmospheric turbulence near the ground severely limits the quality of imagery acquired over long horizontal paths. In defense, surveillance, and border security applications, there is interest in deploying man-portable, embedded systems incorporating image reconstruction methods to compensate turbulence effects. While many image reconstruction methods have been proposed, their suitability for use in man-portable embedded systems is uncertain. To be effective, these systems must operate over significant variations in turbulence conditions while subject to other variations due to operation by novice users. Systems that meet these requirements and are otherwise designed to be immune to the factors that cause variation in …
Implementation Of Porous Silicon Technology For A Fluidic Flow-Through Optical Sensor For Ph Measurements, Kumar L. Vanga
Implementation Of Porous Silicon Technology For A Fluidic Flow-Through Optical Sensor For Ph Measurements, Kumar L. Vanga
Dissertations, Master's Theses and Master's Reports - Open
This work presents an innovative integration of sensing and nano-scaled fluidic actuation in the combination of pH sensitive optical dye immobilization with the electro-osmotic phenomena in polar solvents like water for flow-through pH measurements. These flow-through measurements are performed in a flow-through sensing device (FTSD) configuration that is designed and fabricated at MTU.
A relatively novel and interesting material, through-wafer mesoporous silica substrates with pore diameters of 20 -200 nm and pore depths of 500 µm are fabricated and implemented for electro-osmotic pumping and flow-through fluorescence sensing for the first time. Performance characteristics of macroporous silicon (> 500 µm) implemented …