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2015 Self-Study
No full textThis document is intended to fulfill the self-study requirement associated with ABET’s 2015 accreditation review of the computer engineering program at Kettering University. It has been prepared in accordance with the Engineering Accreditation Commission’s ABET Self-Study Questionnaire: Template for a Self-Study Report (dated August 7, 2014), with reference to ABET’s Criteria for Accrediting Engineering Programs (dated November 7, 2014). vi
In Search of Targeted Cancer Treatment: Magnetic Fluid Hyperthermia & Ultrasound-Mediated Therapies
Get PDFMRI: Acquisition of a High Resolution Transmission Electron Microscope (HRTEM) to Enhance the Materials Science & Nanotechnology Research & Teaching at Kettering University
No full textThis Major Research Instrument (MRI) grant will support the acquisition of a High Resolution Transmission Electron Microscope (HRTEM) to enhance Kettering University\u27s efforts in interdisciplinary undergraduate education and research in nanotechnology and materials characterization. This instrument will be used by faculty, graduate and undergraduate students in a wide range of fields including biology, chemistry, chemical engineering, electrical engineering, mechanical engineering and physics for a large number of research projects and classroom activities. The availability of a HRTEM on the campus of Kettering University has a number of benefits including: (1) A stronger integration of the on-campus and co-op-mediated education (for which Kettering University has long been known) into a holistic educational model; (2) Strengthening Kettering University\u27s role as a steady partner in the economic redevelopment of the state of Michigan and, in particular, the city of Flint; (3) Enabling original contributions to research in areas identified as national grand challenges with broad social impact; (4) Bolstering Kettering University\u27s efforts to recruit and retain students; (5) Further expansion of professional development programs for in-service teaching professionals in the STEM disciplines; (6) The initiation of a program to develop a center for advanced materials characterization at Kettering University to provide services and training to industrial organizations. Furthermore, work resulting from the use of this instrument will allow a number of undergraduate students to attend and present original research at local, regional, national and international meetings. Most importantly, at least 15 courses offered across six academic departments will benefit from the use of this instrument in the development of new laboratory experiments and teaching aids. The acquisition of a HRTEM will greatly benefit a number of ongoing research projects at Kettering University including investigations into the construction of reduced graphene oxide films for use in the development of a super-capacitor, characterization of novel materials for advanced solid oxide fuel cells, cathode materials for Na-ion batteries and characterization of magnetic nanoparticles for a number of biomedical applications. The proposed instrument will allow up to 0.1 nm crystal lattice resolution and up to 0.23 nm point-to-point resolution thus providing meaningful magnification for direct imaging of nanomaterials for size distribution and morphology determination for the applications outlined in the proposal. In addition, the ability to perform scanning transmission electron microscopy (STEM) in conjunction with its energy dispersive x-ray microanalysis system allows for elemental mapping at the nanoscale allowing for size determination and elemental mapping at grain boundaries and other locations within bulk materials. Highlighted ongoing research projects which will benefit from this instrument include: (1) The characterization of magnetic nanoparticles for use in targeted drug delivery and as mediators in the magnetic fluid hyperthermia treatment of malignant tumors, (2) The fabrication and characterization of reduced graphene oxide films using atmospheric plasma and surface annealing, (3) characterization of polymer and composite fibers and films for biomedical applications, (4) Synthesis and characterization of Na4Mn9O18 cathodes and iron oxide anodes for sodium ion batteries, (5) Synthesis and characterization of materials for advanced solid oxide fuel cells, (6) Growth and characterization of magnetosomes produced by magnetotactic bacteria for hyperthermia and micro- and nanorobotics, and (7) The study of the interactions of ligand-capped fold nanostructures with metal ions
Synthesis of Reduced Graphene Oxide Films using Atmospheric Plasma Annealing
No full textGraphene oxide (GO) is an electrical insulator with good mechanical and thermal properties. It exhibits increased conductivity when the Carbon to Oxygen ratio is high. Our work aims to efficiently fabricate inexpensive flexible reduced graphene oxide films for use as supercapacitor electrodes. For this purpose, an aqueous mixture of GO in polyvinyl alcohol (PVA) was coated on aluminum foil. The air-dried films were then subjected to one of two different annealing processes which would burn the polymer; atmospheric plasma annealing in a nitrogen atmosphere and furnace annealing in an argon atmosphere. The films were characterized using Fourier Transform Infrared Spectroscopy (FTIR), X-ray diffraction and Environmental Scanning Electron Microscopy (ESEM). FTIR data indicates that annealing at elevated temperatures of 600C will reduce the OH absorption signature at 3320cm-1, demonstrating a reduction in oxygen content. X-ray diffraction data correlate this result with a characteristic RGO signature. In addition, the ESEM results indicate that the Carbon to Oxygen ratio was substantially increased for the annealed samples. The results suggest that atmospheric plasma annealing in a nitrogen atmosphere could be used as a fast reliable method to transform GO to RGO
Reverse Oblique End Screws in Nonlocking Plates Decrease Construct Strength in Synthetic Osteoporotic Bone Medium
No full textFracture stability can be challenging for osteoporotic individuals. The end screw of nonlocked plates is subjected to the greatest loading and is typically the site of construct failure. To enhance fixation, the end screw can be angled away from the fracture. The current study biomechanically evaluated screws angled the other direction: toward the fracture using 3.5-mm dynamic compression plates in an osteoporotic bone model. Three different plate lengths (6-, 8-, 12-hole) were tested in three-point bending with an oblique, perpendicular, or reverse oblique end screw. The peak load for loss of screw fixation for the reverse oblique end screw constructs was significantly less than the other screw orientations for all plate lengths. The 12-hole peak load, energy, and displacement magnitudes for all three screw orientations were significantly greater than all 6- and 8-hole constructs. The use of a reverse oblique end screw is inferior to both perpendicular and oblique end screws
Determination of modifier contents in polymer-modified bitumens and in samples collected from the roads using high-performance gel permeation/size-exclusion chromatography
No full textThis paper describes application of high-performance gel permeation/size-exclusion chromatography (GPC/SEC) for the determination of content of polymer modifiers in modified road bitumens. The obtained results were compared with the measurements based on the procedure recommended by the American Association of State Highway and Transportation Officials, which employs Fourier transform mid-infrared spectroscopy. Two most commonly used modifiers of paving bitumens, namely, styrene–butadiene–styrene and styrene–butadiene copolymers as well as modified bitumens sampled from various streets in the city of Gdansk (Poland), were investigated. This work confirmed the ability of GPC/SEC to distinguish modified road bitumens from unmodified ones. The developed methodology is particularly important in quality control of modified bitumens, as well as in arbitration analysis when there is a suspicion that the amount of modifier added to bitumen was lowered or that the material does not meet the specifications concerning the modifier content
Hierarchical Cooperative Caching in Mobile Opportunisic Social Networks
No full textA mobile opportunistic social network (MOSN) is a new type of delay tolerant network (DTN), in which the mobile users contact each other opportunistically. While cooperative caching in the Internet has been studied extensively, cooperative caching in MOSNs is a considerably different and challenging problem due to the probabilistic nature of contact among the mobile users in MOSNs. In order to reduce the total access delay, we let the mobile users cooperatively cache these data items in their limited buffer space. We balance between selfishness (caching the data items according to its own preference) and unselfishness (helping other nodes to cache). The friends with higher contact frequency may share similar interests, hence, caching the data items for friend users can lead to some benefit. In this paper, we present a hierarchical cooperative caching scheme, which divides the buffer space into three components: self, friends, and strangers. In the self component, mobile users cache the data items according to their preference. In the friends component, mobile users help their friends to cache some data items. In the strangers component, mobile users randomly cache the remaining data items. We formally analyze the access delay of the proposed scheme. The effectiveness of our approach is verified through extensive real world trace-driven simulations
Back diffusion of electrons in N2 subjected to crossed fields
No full textIn the E/N range of 50 Td - 700 Td (1 Td = 10 -21 Vm 2 ), the back diffusion process for nitrogen subjected to crossed fields are investigated at B/N values ranging from 0 to 24.24 × 10 -25 Tm 3 by means of a Monte Carlo technique employing realistic collision cross sections. It is observed that at constant electron emission energy of 1.0 eV, for a given E/N the escape factor decreases as B/N increases. It is also observed that in the lower E/N range in crossed fields the escape factor is smaller than those of the higher E/N range. The escape factor on the magnetic deflection angle is evaluated and a dependence on the magnetic field is observed in crossed fields in the given ranges of E/N and B/N