Search results
(5,421 - 5,440 of 10,083)
Pages
- Title
- Social Networking as Economic Development Strategy in US and India (Semester Unknown) IPRO 305: Leveraging Social Perception Networks IPRO 305 Ethics Sp08
- Creator
- Maheshwari, Anshul, Folwaczny, Dan, Steinmetz, Edwin, Patel, Soham, Bora, Vasile, Kelkar, Vishwesh
- Date
- 2008, 2008-05
- Description
-
The course IPRO-305 is geared towards giving the students practical product development experience by addressing the problem statement...
Show moreThe course IPRO-305 is geared towards giving the students practical product development experience by addressing the problem statement provided by the workshop sponsor (and our client), Honeywell, Inc. During the course of this workshop, we will implement the formative stages of a user-centered design process by developing and prototyping design concepts based on an understanding of existing social networks in small business communities in two neighborhoods, Pilsen/Little Village in Chicago and Powai in Mumbai. The goal will be to develop product, communication or service designs that contribute to increasing prosperity and small business growth within the Chicago and Mumbai neighborhoods. This project will be undertaken in collaboration with graduate students at the Indian Institute of Technology, Bombay (IIT-Bombay) and their Industrial Design Centre, (comparable to IIT Institute of Design), as well as staff at Honeywell in Bangalore and Minneapolis. By working on this project students, both undergraduate IPRO students and graduate IIT, Chicago’s design school students are intended to gain proficiency in remote research methods and collaborating with your contemporaries abroad on a global design project. The flavor of this effort will be a practical or professional one, working towards implementation and design refinement. At the end of this experience, all participating students should have: 1. a solid understanding of methods and artifacts necessary to conduct design research internationally 2. experience in applying design and business practices to economic development issues 3 3. a basic understanding of existing social networks in 2 small business communities and how design can help address these 4. established professional relationships with Indian designers who share a human-centered mindset 5. a portfolio-ready project, complete with a recognizable client
Deliverables
Show less
- Title
- Heat Treat Subgroup (Semester Unknown) IPRO 304: Heat Treatment Program IPRO 304 Poster2 Sp08
- Creator
- Larkin, Evan, Murillo, Bryan, Pawlak, Joseph, Popov, Nikolay, Przybysz, Nicholas
- Date
- 2008, 2008-05
- Description
-
Finkl is an industrial steel manufacturer of custom, high quality steel parts for other industries (stamp molding for auto, aircraft landing...
Show moreFinkl is an industrial steel manufacturer of custom, high quality steel parts for other industries (stamp molding for auto, aircraft landing gear, die steel for other manufactures, etc) The company performs the entire process from smelting the steel, casting and forging, heat treating, and machining of their parts. Currently in their heat treatment process at Finkl, approximately 10% of their parts that are below company quality standards. Finkl has no efficient way of tracking where specific parts are in relation to each other while in the furnace. So when a part comes out below standards, it is hard to trace back where that part was in the furnace and why it was not treated properly. Finkl has enlisted the help of IIT students, which plan to implement a software program that Finkl can use to create a virtual furnace with the parts that will be heat treated and their specific locations in the furnace. When parts come out below quality standards, the program would allow Finkl to examine the location of the parts within the furnace and determine the reason for sub-par quality. The previous semester IPRO was able to develop a software program that displayed the different Finkl shapes; however, the program only displays a single shape at a time without the ability to move or resize the shape. They were also able to model about half of the Finkl shape codes in ProE. . When a large number of parts fail, they must be retreated to meet company quality standards. Taking the time to retreat the process takes both time and money away from the company. If we can help to identify the cause of the heat treatment failure, this would save the company a large amount of money each year. To be able to determine the cause of the heat treat failure, the team hopes to develop a visual database of the furnace layout to help track parts location within the furnace.
Sponsorship: A. Finkl & Sons
Deliverables
Show less
- Title
- Heat Treat Subgroup (Semester Unknown) IPRO 304: Heat Treatment Program IPRO 304 Project Plan Sp08
- Creator
- Larkin, Evan, Murillo, Bryan, Pawlak, Joseph, Popov, Nikolay, Przybysz, Nicholas
- Date
- 2008, 2008-05
- Description
-
Finkl is an industrial steel manufacturer of custom, high quality steel parts for other industries (stamp molding for auto, aircraft landing...
Show moreFinkl is an industrial steel manufacturer of custom, high quality steel parts for other industries (stamp molding for auto, aircraft landing gear, die steel for other manufactures, etc) The company performs the entire process from smelting the steel, casting and forging, heat treating, and machining of their parts. Currently in their heat treatment process at Finkl, approximately 10% of their parts that are below company quality standards. Finkl has no efficient way of tracking where specific parts are in relation to each other while in the furnace. So when a part comes out below standards, it is hard to trace back where that part was in the furnace and why it was not treated properly. Finkl has enlisted the help of IIT students, which plan to implement a software program that Finkl can use to create a virtual furnace with the parts that will be heat treated and their specific locations in the furnace. When parts come out below quality standards, the program would allow Finkl to examine the location of the parts within the furnace and determine the reason for sub-par quality. The previous semester IPRO was able to develop a software program that displayed the different Finkl shapes; however, the program only displays a single shape at a time without the ability to move or resize the shape. They were also able to model about half of the Finkl shape codes in ProE. . When a large number of parts fail, they must be retreated to meet company quality standards. Taking the time to retreat the process takes both time and money away from the company. If we can help to identify the cause of the heat treatment failure, this would save the company a large amount of money each year. To be able to determine the cause of the heat treat failure, the team hopes to develop a visual database of the furnace layout to help track parts location within the furnace.
Sponsorship: A. Finkl & Sons
Deliverables
Show less
- Title
- Heat Treat Subgroup (Semester Unknown) IPRO 304: Heat Treatment Program IPRO 304 MidTerm Report Sp08
- Creator
- Larkin, Evan, Murillo, Bryan, Pawlak, Joseph, Popov, Nikolay, Przybysz, Nicholas
- Date
- 2008, 2008-05
- Description
-
Finkl is an industrial steel manufacturer of custom, high quality steel parts for other industries (stamp molding for auto, aircraft landing...
Show moreFinkl is an industrial steel manufacturer of custom, high quality steel parts for other industries (stamp molding for auto, aircraft landing gear, die steel for other manufactures, etc) The company performs the entire process from smelting the steel, casting and forging, heat treating, and machining of their parts. Currently in their heat treatment process at Finkl, approximately 10% of their parts that are below company quality standards. Finkl has no efficient way of tracking where specific parts are in relation to each other while in the furnace. So when a part comes out below standards, it is hard to trace back where that part was in the furnace and why it was not treated properly. Finkl has enlisted the help of IIT students, which plan to implement a software program that Finkl can use to create a virtual furnace with the parts that will be heat treated and their specific locations in the furnace. When parts come out below quality standards, the program would allow Finkl to examine the location of the parts within the furnace and determine the reason for sub-par quality. The previous semester IPRO was able to develop a software program that displayed the different Finkl shapes; however, the program only displays a single shape at a time without the ability to move or resize the shape. They were also able to model about half of the Finkl shape codes in ProE. . When a large number of parts fail, they must be retreated to meet company quality standards. Taking the time to retreat the process takes both time and money away from the company. If we can help to identify the cause of the heat treatment failure, this would save the company a large amount of money each year. To be able to determine the cause of the heat treat failure, the team hopes to develop a visual database of the furnace layout to help track parts location within the furnace.
Sponsorship: A. Finkl & Sons
Deliverables
Show less
- Title
- Heat Treat Subgroup (Semester Unknown) IPRO 304: Heat Treatment Program IPRO 304 Final Report Sp08
- Creator
- Larkin, Evan, Murillo, Bryan, Pawlak, Joseph, Popov, Nikolay, Przybysz, Nicholas
- Date
- 2008, 2008-05
- Description
-
Finkl is an industrial steel manufacturer of custom, high quality steel parts for other industries (stamp molding for auto, aircraft landing...
Show moreFinkl is an industrial steel manufacturer of custom, high quality steel parts for other industries (stamp molding for auto, aircraft landing gear, die steel for other manufactures, etc) The company performs the entire process from smelting the steel, casting and forging, heat treating, and machining of their parts. Currently in their heat treatment process at Finkl, approximately 10% of their parts that are below company quality standards. Finkl has no efficient way of tracking where specific parts are in relation to each other while in the furnace. So when a part comes out below standards, it is hard to trace back where that part was in the furnace and why it was not treated properly. Finkl has enlisted the help of IIT students, which plan to implement a software program that Finkl can use to create a virtual furnace with the parts that will be heat treated and their specific locations in the furnace. When parts come out below quality standards, the program would allow Finkl to examine the location of the parts within the furnace and determine the reason for sub-par quality. The previous semester IPRO was able to develop a software program that displayed the different Finkl shapes; however, the program only displays a single shape at a time without the ability to move or resize the shape. They were also able to model about half of the Finkl shape codes in ProE. . When a large number of parts fail, they must be retreated to meet company quality standards. Taking the time to retreat the process takes both time and money away from the company. If we can help to identify the cause of the heat treatment failure, this would save the company a large amount of money each year. To be able to determine the cause of the heat treat failure, the team hopes to develop a visual database of the furnace layout to help track parts location within the furnace.
Sponsorship: A. Finkl & Sons
Deliverables
Show less
- Title
- Heat Treat Subgroup (Semester Unknown) IPRO 304: Heat Treatment Program IPRO 304 MidTerm Presentation Sp08
- Creator
- Larkin, Evan, Murillo, Bryan, Pawlak, Joseph, Popov, Nikolay, Przybysz, Nicholas
- Date
- 2008, 2008-05
- Description
-
Finkl is an industrial steel manufacturer of custom, high quality steel parts for other industries (stamp molding for auto, aircraft landing...
Show moreFinkl is an industrial steel manufacturer of custom, high quality steel parts for other industries (stamp molding for auto, aircraft landing gear, die steel for other manufactures, etc) The company performs the entire process from smelting the steel, casting and forging, heat treating, and machining of their parts. Currently in their heat treatment process at Finkl, approximately 10% of their parts that are below company quality standards. Finkl has no efficient way of tracking where specific parts are in relation to each other while in the furnace. So when a part comes out below standards, it is hard to trace back where that part was in the furnace and why it was not treated properly. Finkl has enlisted the help of IIT students, which plan to implement a software program that Finkl can use to create a virtual furnace with the parts that will be heat treated and their specific locations in the furnace. When parts come out below quality standards, the program would allow Finkl to examine the location of the parts within the furnace and determine the reason for sub-par quality. The previous semester IPRO was able to develop a software program that displayed the different Finkl shapes; however, the program only displays a single shape at a time without the ability to move or resize the shape. They were also able to model about half of the Finkl shape codes in ProE. . When a large number of parts fail, they must be retreated to meet company quality standards. Taking the time to retreat the process takes both time and money away from the company. If we can help to identify the cause of the heat treatment failure, this would save the company a large amount of money each year. To be able to determine the cause of the heat treat failure, the team hopes to develop a visual database of the furnace layout to help track parts location within the furnace.
Sponsorship: A. Finkl & Sons
Deliverables
Show less
- Title
- Heat Treat Subgroup (Semester Unknown) IPRO 304: Heat Treatment Program IPRO 304 Poster Sp08
- Creator
- Larkin, Evan, Murillo, Bryan, Pawlak, Joseph, Popov, Nikolay, Przybysz, Nicholas
- Date
- 2008, 2008-05
- Description
-
Finkl is an industrial steel manufacturer of custom, high quality steel parts for other industries (stamp molding for auto, aircraft landing...
Show moreFinkl is an industrial steel manufacturer of custom, high quality steel parts for other industries (stamp molding for auto, aircraft landing gear, die steel for other manufactures, etc) The company performs the entire process from smelting the steel, casting and forging, heat treating, and machining of their parts. Currently in their heat treatment process at Finkl, approximately 10% of their parts that are below company quality standards. Finkl has no efficient way of tracking where specific parts are in relation to each other while in the furnace. So when a part comes out below standards, it is hard to trace back where that part was in the furnace and why it was not treated properly. Finkl has enlisted the help of IIT students, which plan to implement a software program that Finkl can use to create a virtual furnace with the parts that will be heat treated and their specific locations in the furnace. When parts come out below quality standards, the program would allow Finkl to examine the location of the parts within the furnace and determine the reason for sub-par quality. The previous semester IPRO was able to develop a software program that displayed the different Finkl shapes; however, the program only displays a single shape at a time without the ability to move or resize the shape. They were also able to model about half of the Finkl shape codes in ProE. . When a large number of parts fail, they must be retreated to meet company quality standards. Taking the time to retreat the process takes both time and money away from the company. If we can help to identify the cause of the heat treatment failure, this would save the company a large amount of money each year. To be able to determine the cause of the heat treat failure, the team hopes to develop a visual database of the furnace layout to help track parts location within the furnace.
Sponsorship: A. Finkl & Sons
Deliverables
Show less
- Title
- Social Networking as Economic Development Strategy in US and India (Semester Unknown) IPRO 305: Leveraging Social Perception Networks IPRO 305 Final Presentation Sp08
- Creator
- Maheshwari, Anshul, Folwaczny, Dan, Steinmetz, Edwin, Patel, Soham, Bora, Vasile, Kelkar, Vishwesh
- Date
- 2008, 2008-05
- Description
-
The course IPRO-305 is geared towards giving the students practical product development experience by addressing the problem statement...
Show moreThe course IPRO-305 is geared towards giving the students practical product development experience by addressing the problem statement provided by the workshop sponsor (and our client), Honeywell, Inc. During the course of this workshop, we will implement the formative stages of a user-centered design process by developing and prototyping design concepts based on an understanding of existing social networks in small business communities in two neighborhoods, Pilsen/Little Village in Chicago and Powai in Mumbai. The goal will be to develop product, communication or service designs that contribute to increasing prosperity and small business growth within the Chicago and Mumbai neighborhoods. This project will be undertaken in collaboration with graduate students at the Indian Institute of Technology, Bombay (IIT-Bombay) and their Industrial Design Centre, (comparable to IIT Institute of Design), as well as staff at Honeywell in Bangalore and Minneapolis. By working on this project students, both undergraduate IPRO students and graduate IIT, Chicago’s design school students are intended to gain proficiency in remote research methods and collaborating with your contemporaries abroad on a global design project. The flavor of this effort will be a practical or professional one, working towards implementation and design refinement. At the end of this experience, all participating students should have: 1. a solid understanding of methods and artifacts necessary to conduct design research internationally 2. experience in applying design and business practices to economic development issues 3 3. a basic understanding of existing social networks in 2 small business communities and how design can help address these 4. established professional relationships with Indian designers who share a human-centered mindset 5. a portfolio-ready project, complete with a recognizable client
Deliverables
Show less
- Title
- THE ASSOCIATION BETWEEN PSYCHOLOGICAL FACTORS AND GLYCEMIC CONTROL IN TYPE 2 DIABETIC PATIENTS ON INSULIN
- Creator
- AraÚjo, Fabiana Souza
- Date
- 2016, 2016-12
- Description
-
This study investigated the relationship among several psychological constructs and glycemic control in Type 2 diabetes patients on multiple...
Show moreThis study investigated the relationship among several psychological constructs and glycemic control in Type 2 diabetes patients on multiple daily doses of insulin. Participants were mostly impoverished and underserved minorities and were all patients of a diabetes specialty clinic in a county hospital of a metropolitan area in the Midwest of the U.S. Eighty-two participants completed self-reported questionnaires on diabetes, self-efficacy, psychological distress, diabetes-related distress, adherence to medication, diabetes knowledge, literacy, numeracy, health locus of control and had their HbA1c tested. Results of multiple regression analyses controlling for age, gender, and duration of diabetes indicted that higher self-efficacy (p = .005) was associated with better glycemic control. Mediation analyses did not yield significant results when testing whether self-efficacy mediated the relationship between some psychological constructs (i.e., diabetes knowledge, literacy, or numeracy) and glycemic control. Similarly, no significant results were found in mediation analyses neither when adherence to medication was tested as a mediator between diabetes knowledge and glycemic control nor when diabetes-related distress was tested as a mediator between psychological distress and glycemic control. These results emphasize the importance of self-efficacy among underserved minority patient in their abilities to perform all complex behaviors required to properly manage diabetes. Future studies with larger sample sizes should expand our findings and provide more information on some of our non-significant findings.
Ph.D. in Psychology, December 2016
Show less
- Title
- An application of polarized light to resolution with the compound microscope
- Creator
- Stump, Dan M.
- Date
- 2009, 1921
- Publisher
- Armour Institute of Technology
- Description
-
http://www.archive.org/details/applicationofpol00stum
Thesis (B.S.)--Armour Institute of Technology
- Title
- Arched dams
- Creator
- Szeszychi, Ignatius Leo., Zack, Raymond R.
- Date
- 2009, 1911
- Publisher
- Armour Institute of Technology
- Description
-
http://www.archive.org/details/archeddams00szes
Thesis (B.S.)--Armour Institute of Technology, 1911 B.S. in Civil Engineering, 1911
- Title
- ENGINEERING 2D PHOTO-REACTING COF FOR PATTERNING AND DRUG DELIVERY
- Creator
- Chen, Kuo Hao
- Date
- 2017, 2017-07
- Description
-
Covalent Organic Frameworks (COFs) are 2-dimensional polymers that exhibit rigid and large surface area as well as porous architectures....
Show moreCovalent Organic Frameworks (COFs) are 2-dimensional polymers that exhibit rigid and large surface area as well as porous architectures. Currently, COFs are tailored for gas storage applications, drug delivery, catalysis and they are used as filtering membranes for water treatment. It is well documented that at the nano/micro scale, COFs can form multi-layered architecture with respect to the basic molecular building blocks. In this picture, it is possible that the 2D intra-layer and 3D inter-layer interactions of the basic molecular units COFs may dictate the overall efficiency of the aforementioned applications. To understand the dimensionality-function relationship of COFs, we are engineering hybrid 1D-2D organic polymers. This hybrid architecture will allow us to study the propagation of energy/exciton transfer within the resulting materials among other applications such as drug delivery and light-induced nano/micro-patterning. To achieve our objectives, I exploited the photo-reacting properties of two molecular systems: The first system is used to prepare the 2D COF of interest and the other system is used to engineer a 1D crystalline solid. Although I have not tested the energy/exciton propagation with the desired material, I have successfully engineered a 1D crystalline solid and synthesized the expected 2D COFs. Using a combination of synthetic strategies, I prepared and characterized photoreacting tetra-phenyl ketone building block that was used to form the desired polymer. I have also engineered 1D needle-like crystals of bisphenyl cyclopropenone compound. Moreover, the two materials were characterized by optical and electron microscopy methods. This thesis will detail the synthesis and characterization of all precursors of the basic molecular units that were used to engineer the 1D crystalline solid and 2D COF materials. Condignly, the optical and scanning electron microscopy images highlight the microscale features of the materials of interest. I am certain that this preliminary investigation will pave the way to study the dimensionality of energy/exciton transfer and reaction propagation in the many organic materials.
M.S. in Chemistry, July 2017
Show less
- Title
- The chemical utilization of municipal waste
- Creator
- Hammond, Edward K.
- Date
- 2009, 1909
- Publisher
- Armour Institute of Technology
- Description
-
http://www.archive.org/details/chemicalutilizat00hamm
Thesis (B.S.)--Armour Institute of Technology
- Title
- LEAKAGE DETECTION AND QUANTIFICATION TECHNIQUES USING VARIOUS METHODS OF NEARFIELD ACOUSTIC HOLOGRAPHY
- Creator
- Chelliah, Kanthasamy
- Date
- 2016, 2016-07
- Description
-
This thesis proposes an acoustic technique to detect and relatively quantify leakages in buildings and enclosures using various methods of...
Show moreThis thesis proposes an acoustic technique to detect and relatively quantify leakages in buildings and enclosures using various methods of nearfield acoustic holography (NAH). This laboratory study was performed on a scaled, wooden building model. Known leakages can be created in the wooden model and the acoustic method was tested to localize and relatively quantify these known leakage areas. An acoustic source was placed inside the building model and a planar hologram measurement was performed near the surface of the building model. Various methods of NAH were applied on the hologram data to reconstruct the sound pressure field on the wall of the building model. The detection and quantification capabilities of four different NAH methods, namely, discrete Fourier transform (DFT) based NAH, equivalent source model (ESM) based NAH, boundary element method (BEM) based NAH and statistically optimized NAH (SONAH), were compared in this study. It was shown that the NAH methods were able to successfully locate and relatively quantify the area of the leakages using the reconstructions. Although all the four algorithms produced comparable results in the very nearfield, at larger hologram distances, ESM and SONAH reconstructions were more accurate than the reconstructions using the other methods. Although, ESM and SONAH produced similar results for most of the cases, ESM is more preferable due to its simplicity in implementation and less computational time requirements. Lower frequency reconstructions were found to be more accurate and advantageous in the context of leakage detection and quantification. When the hologram distance was increased more than a particular limit, all the four algorithms arrive at inaccurate reconstructions due to the very ill-conditioned propagation matrices. New filtering methods to alleviate these larger reconstruction errors were introduced and the results were demonstrated. Effects of large sensor phase mismatch were also studied. It was demonstrated that larger phase error in the measurements could result in less accurate reconstructions. Performances of various regularization parameter choice methods applied to different approaches of nearfield acoustic holography were compared at various distances of reconstructions. Generalized cross validation and Morozov methods were implemented to arrive at filtering parameters to regularize the NAH reconstructions. Morozov method did not provide any significant filtering for the geometries considered in this study. GCV method produced very accurate reconstructions when a very nearfield measurement was supplied. Four new parameter choice methods were introduced to obtain the appropriate regularization parameters for very ill-conditioned inverse problems such as NAH. These methods work very well even at larger hologram distances and when the matrix dimension is very large where other available methods fail. These new parameter choice methods are not specific for the NAH problem. They can be applied to any ill-conditioned inverse problem. The advantages of each parameter choice method were explored and discussed in detail. Effects of signal quality on the NAH reconstructions were also studied. Patch NAH was implemented successfully to extend the aperture of computational domain more than that of the measurement. Also, the challenges in obtaining a smooth solution through patch NAH were discussed. A unique, MEMS based microphone array was designed, fabricated and tested keeping the future field tests in mind. The tests show that this array produces reasonably accurate measurements that can be used for the NAH methods. GCV method was found to work well for the reconstructions from the array even at larger distances because of the smaller propagation matrix due to the less number of microphones. This portable array can be used for field tests due to its portable form factor and reasonably accurate reconstructions.
Ph.D. in Mechanical and Aerospace Engineering, July 2016
Show less
- Title
- ELECTROCHEMICAL AND TERMAL MECHANISTIC STUDY OF BEYOND LITHIUM ION SYSTEMS: LITHIUM SULFUR AND LITHIUM OXYGEN CELLS
- Creator
- Seo, Jeongwook
- Date
- 2016, 2016-05
- Description
-
Electrochemical and Thermal Mechanistic Study of Lithium Sulfur Cell. The thermal behavior of Li/S cells was studied using IMC in terms of...
Show moreElectrochemical and Thermal Mechanistic Study of Lithium Sulfur Cell. The thermal behavior of Li/S cells was studied using IMC in terms of reversible and irreversible heat generation. The heat generation profile was compared with the voltage profile during discharge of the cell and it was found that the trend of heat generation rate shows excellent correlation with the evolution of reaction voltage, which demonstrates that the IMC technique can be used as an useful tool to study the elementary reactions of the Li/S cell. A simple heat generation model provides reasonable agreement with the measured trends in the heat release. The resistive heat evolution that is calculated by over voltage has the largest portion of total cell heat generation (85%) after the IMC heat evolution model analysis. The qualitative agreement between the aforementioned experimental results and heat generation model yields a comprehensive picture of the elementary reaction steps in Li/S cell. The increase of cell conductivity can be expected to bring about low heat evolution during cell cycling by reducing resistive heat. Doped Sulfur as a conductive cathode is a good suggestion to improve cell heat behavior. Furthermore, better cell cycle capability is expected by using lithium metal oxide cathode composites. The thermal behavior of three cathode materials for lithium/sulfur (Li/S) cell, namely - sulfur, sulfur-LiFePO4 (S-LFP) composite and sulfur-LiV3O8 (S-LVO) composite were comparatively studied using Isothermal Micro-Calorimetry (IMC) at various rates of discharge current. A continuum model was used to calculate the reversible entropic heat and irreversible resistive heat generated over the discharge process and the model data was compared to the experimental data to elucidate these contributions to the overall heat generated. The S-LVO composite cathode was found to show the least heat generation during discharge. Further, Accelerating Rate Calorimetry (ARC) was used to study the thermal safety of these three cells. The cell with the S-LVO composite cathode was found to have the highest onset temperature for thermal runaway and also the lowest maximum self-heat rate. The combination of high capacity, long cycle life and thermal stability makes the S-LVO composite cathode a very promising material for Li/S cells Oxygen Reduction Reaction Studies using Rotating Ring Disk Electrode for Li-Air battery. The oxygen reduction reaction (ORR) studies in aqueous electrolytes have reported the following reaction mechanisms: (i) four electron reaction, (ii) two electron reaction and (iii) one electron chemical reaction. On the other hand, the aprotic ORR literature has no reports of four electrons and two electrons transfer reaction. The kinetics of ORR on the cathode was carried out using rotating ring disk electrode (RRDE) technique. The first step of ORR which produces the superoxide radical was investigated on glassy carbon (GC) disk in 0.1 M tetrabutylammonium bis-(trifluoromethane)imide (TBATFSI)/dimethoxyethane (DME). One-electron reduction to the superoxide radical was founded in the linear sweep voltammetry (LSV) analysis. Further, ORR to produce LiO2 and Li2O2 was carried in bis(trifluoromethane)sulfonimide-lithium(LITFSI)/DME on porous carbon coated glassy carbon electrode disk. The reaction kinetic rate on the porous carbon was calculated using the Li-O2 ORR mechanism model. The kinetic rate was compared with the kinetic rate of glassy carbon electrode. The non-aqueous system has several advantages compared to the aqueous system such as high operation voltage and non-reactive electrolyte with Li+. However this system has some critical problems such as low solubility of Li2O2 and High charge over potential. One attempted solution for these disadvantages of the non-aqueous system was to carry out water addition into the solvent which was expected to produce highly soluble LiOH with lower overpotential. Small amount of Water, 0.5 wt% added into 0.1 M LiTFSI/DME and 1 wt% added in the 0.2 M TBATFSI/DME electrolyte, showed great electrochemical performance with lower onset potential and overvoltage. The kinetics of ORR study for the non-aqueous and aqueous hybrid system was carried out using RRDE technique. Koutecky-Levich plot and Tafel slope analysis indicated two electron transfer reaction on the hydrated 0.1 M LiTFSI/DME. This hydrated system can be expected to double energy storage by two electron transfer ORR for Li-O2 Cell.
Ph.D. in Chemical Engineeering, May 2016
Show less
- Title
- Chemical analysis of engineering alloys
- Creator
- Wilsnack, G. C., Patrick, W. W
- Date
- 2009, 1912
- Publisher
- Armour Institute of Technology
- Description
-
http://www.archive.org/details/chemicalanalysis00wils
Thesis (B.S.)--Armour Institute of Technology, 1912 B.S. in Chemical Engineering, 1912
- Title
- Fab Lab (Semester Unknown) IPRO 333: Fab Lab IPRO 333 Final Presentation F08
- Creator
- Brassil, Michael, Lamonica, Regina, Luciani, Joseph, Ly, Christine, Martinez, Jessica, Martinez, Michael, Murman, Patricia, Ptak, Treyson, Reyes, Ivan, Villa, Jacqueline
- Date
- 2008, 2008-12
- Description
-
Fabrication Laboratories (Fab Labs) were started as a community outreach program by the Massachusetts Institute of Technology to provide...
Show moreFabrication Laboratories (Fab Labs) were started as a community outreach program by the Massachusetts Institute of Technology to provide digital fabrication tools for rapid prototyping to the general public. The Museum of Science and Industry in Chicago (MSI) has partnered with this IPRO to further develop their existing Fab Lab. IPRO 333 has been assigned the task of working with the Fab Lab administrators to design methodologies for furthering the use of the laboratory and determining its end goals for both the museum and the community. Once these goals are established, we will support them with a list of projects that we will create and execute. By working with the lab directors to broaden the possible uses of the lab, we hope to encourage hands-on learning in local schools. This will promote membership at MSI and involve the community in science and technology programs and education. To accomplish this, we have broken into two teams, each of which will focus on a different audience. The first team will be responsible for designing and creating programs for more advanced and knowledgeable users of the equipment specific to the Fab Lab, such as the students enrolled in the Science Achievers program as well as museum members; the second team will be responsible for designing and implementing programs for less advanced users with more constrained timeframes, such as visiting families or groups of school children.
Deliverables
Show less
- Title
- Fab Lab (Semester Unknown) IPRO 333: Fab Lab IPRO 333 Final Report F08
- Creator
- Brassil, Michael, Lamonica, Regina, Luciani, Joseph, Ly, Christine, Martinez, Jessica, Martinez, Michael, Murman, Patricia, Ptak, Treyson, Reyes, Ivan, Villa, Jacqueline
- Date
- 2008, 2008-12
- Description
-
Fabrication Laboratories (Fab Labs) were started as a community outreach program by the Massachusetts Institute of Technology to provide...
Show moreFabrication Laboratories (Fab Labs) were started as a community outreach program by the Massachusetts Institute of Technology to provide digital fabrication tools for rapid prototyping to the general public. The Museum of Science and Industry in Chicago (MSI) has partnered with this IPRO to further develop their existing Fab Lab. IPRO 333 has been assigned the task of working with the Fab Lab administrators to design methodologies for furthering the use of the laboratory and determining its end goals for both the museum and the community. Once these goals are established, we will support them with a list of projects that we will create and execute. By working with the lab directors to broaden the possible uses of the lab, we hope to encourage hands-on learning in local schools. This will promote membership at MSI and involve the community in science and technology programs and education. To accomplish this, we have broken into two teams, each of which will focus on a different audience. The first team will be responsible for designing and creating programs for more advanced and knowledgeable users of the equipment specific to the Fab Lab, such as the students enrolled in the Science Achievers program as well as museum members; the second team will be responsible for designing and implementing programs for less advanced users with more constrained timeframes, such as visiting families or groups of school children.
Deliverables
Show less
- Title
- Fab Lab (Semester Unknown) IPRO 333: Fab Lab IPRO 333 Poster3 F08
- Creator
- Brassil, Michael, Lamonica, Regina, Luciani, Joseph, Ly, Christine, Martinez, Jessica, Martinez, Michael, Murman, Patricia, Ptak, Treyson, Reyes, Ivan, Villa, Jacqueline
- Date
- 2008, 2008-12
- Description
-
Fabrication Laboratories (Fab Labs) were started as a community outreach program by the Massachusetts Institute of Technology to provide...
Show moreFabrication Laboratories (Fab Labs) were started as a community outreach program by the Massachusetts Institute of Technology to provide digital fabrication tools for rapid prototyping to the general public. The Museum of Science and Industry in Chicago (MSI) has partnered with this IPRO to further develop their existing Fab Lab. IPRO 333 has been assigned the task of working with the Fab Lab administrators to design methodologies for furthering the use of the laboratory and determining its end goals for both the museum and the community. Once these goals are established, we will support them with a list of projects that we will create and execute. By working with the lab directors to broaden the possible uses of the lab, we hope to encourage hands-on learning in local schools. This will promote membership at MSI and involve the community in science and technology programs and education. To accomplish this, we have broken into two teams, each of which will focus on a different audience. The first team will be responsible for designing and creating programs for more advanced and knowledgeable users of the equipment specific to the Fab Lab, such as the students enrolled in the Science Achievers program as well as museum members; the second team will be responsible for designing and implementing programs for less advanced users with more constrained timeframes, such as visiting families or groups of school children.
Deliverables
Show less
- Title
- Fab Lab (Semester Unknown) IPRO 333: Fab Lab IPRO 333 Poster4 F08
- Creator
- Brassil, Michael, Lamonica, Regina, Luciani, Joseph, Ly, Christine, Martinez, Jessica, Martinez, Michael, Murman, Patricia, Ptak, Treyson, Reyes, Ivan, Villa, Jacqueline
- Date
- 2008, 2008-12
- Description
-
Fabrication Laboratories (Fab Labs) were started as a community outreach program by the Massachusetts Institute of Technology to provide...
Show moreFabrication Laboratories (Fab Labs) were started as a community outreach program by the Massachusetts Institute of Technology to provide digital fabrication tools for rapid prototyping to the general public. The Museum of Science and Industry in Chicago (MSI) has partnered with this IPRO to further develop their existing Fab Lab. IPRO 333 has been assigned the task of working with the Fab Lab administrators to design methodologies for furthering the use of the laboratory and determining its end goals for both the museum and the community. Once these goals are established, we will support them with a list of projects that we will create and execute. By working with the lab directors to broaden the possible uses of the lab, we hope to encourage hands-on learning in local schools. This will promote membership at MSI and involve the community in science and technology programs and education. To accomplish this, we have broken into two teams, each of which will focus on a different audience. The first team will be responsible for designing and creating programs for more advanced and knowledgeable users of the equipment specific to the Fab Lab, such as the students enrolled in the Science Achievers program as well as museum members; the second team will be responsible for designing and implementing programs for less advanced users with more constrained timeframes, such as visiting families or groups of school children.
Deliverables
Show less