Search results

Title: POLYMER ELECTROLYTE MEMBRANES FOR ELECTROCHEMICAL ENERGY CONVERSION AND STORAGE SYSTEMS: FUEL CELLS AND REDOX FLOW BATTERIES
Creator: Yun, Sukhwan
Date: 2014, 2014-12
Description: Direct methanol fuel cells (DMFCs) and redox flow batteries (RFBs) are well-known electrochemical energy conversion/storage systems that...
Show moreDirect methanol fuel cells (DMFCs) and redox flow batteries (RFBs) are well-known electrochemical energy conversion/storage systems that utilize redox reactions to convert or store electricity. Ion exchange membranes (IEMs) are used in DMFCs and RFBs as electrolyte separators. The critical requirements for IEMs in these applications are high ionic conductivity, low electrolyte permeability, high stability, and low cost. Silsesquioxane (SQO)-based sulfonated poly(etheretherketone) composite membranes were synthesized. Morphological changes in the composite membranes resulting from the introduction of SQO were studied using small-angle x-ray scattering. A sharp decrease in proton conductivity with SQO loading (> 20 wt%) was attributed to morphological changes in the membrane, including agglomeration and inhomogeneous dispersion of SQO particles within the ionic domains. Anion exchange membranes (AEMs) based on quaternized cardo-poly(etherketone) (QPEK-C) were prepared and evaluated for all-vanadium RFB (VRFB) applications. The QPEK-C AEMs with different degrees of functionalization (0.9–1.6) exhibited sulfate ion conductivities ranging between 5.6 and 15.2 mS cm-1 at 30 oC. The AEM had a lower VO2+ permeability (2.8×10-8 cm2 s-), compared to that of Nafion® 212 (2.9±0.2 ×10-7 cm2 s-1), which was attributed to the Donnan exclusion effect. The mechanical strength of QPEK-C AEM degraded by 35% after exposure to a 1.5 M VO2+ solution for 1500 hours due to the oxidation of aromatic rings. A single-cell VRFB employing the AEM separator yielded current and energy efficiencies (at 30 mA cm-2) of 97-99% and 80-82 %, respectively. Enhanced sulfate ion conductivity (8.4 ± 0.2 mS cm-1) and decreased VO2+ permeability (0.53×10-9 cm2 s-1) were achieved by incorporating 20 wt% of n-(trimethoxysilylpropyl)-n,n,n-trimethylammonium additives into QPEK-C, (the pristine QPEK-C AEM yielded corresponding values of 4.5 ± 0.5 mS cm-1 and 1.09×10-9 cm2 s-1). About 99% coulombic efficiency was achieved with the VRFBs employing the composite AEM. However, a rapid reduction of the ionic conductivity down to the value of the pristine membrane was observed when the composite AEM was immersed in 1.5 M VO2+ solution for 3 days. Vanadium-cerium RFBs (V-Ce RFBs) evaluated with QPEK-C AEM separators yielded identical energy efficiency (84%) to corresponding RFBs evaluated with Nafion® 212. However, after over 20 charge-discharge cycles, the V-Ce RFB with the AEM separator yielded unchanged efficiency and capacity, while a 50% loss of capacity was observed with the Nafion® separator. This suggested that QPEK-C AEMs are promising candidates for RFB separators when different cations are used in the two electrolyte solutions, in that they act as efficient barriers that preclude the intermixing of the cations due to the Donnan exclusion effect.
Ph.D. in Chemical Engineering, December 2014
Show less

Title: Magnetic Impulse Record Member, Magnetic Material and Method of Making Magnetic Material
Creator: Camras, Marvin
Date: 1954-11-16
Description: Sponsorship: Armour Research Foundation of Illinois Institute of Technology
United States Patent

Title: Methods for Multi-User Broadband Wireless Channel Estimation
Creator: Tahat, Ashraf A.
Date: 2012-03-20, 2008-06-10
Description: A system and method of channel estimation for a multi-user broadband wireless channel estimation in multiple antenna receiver systems use a...
Show moreA system and method of channel estimation for a multi-user broadband wireless channel estimation in multiple antenna receiver systems use a specifically selected delay in the pilot symbol sequence portion of the transmission which is a multiple of the minimum Cyclic Prefix delay length. This insures that the time-frequency slot information bursts will always be separated in the time domain. A matched filter output in the receiver is formed by multiplying each pilot symbol by the conjugate of the training symbols of the first user. Estimation of the channel response may include three different versions of the efficient estimation calculations, namely Constrained Inverse Deconvolution, Iterative Low Complexity, and Extrapolated Matched Filter estimations. The first two methods do not require matrix multiplication (using only Fourier transforms), while the third method utilizes a smaller matrix multiplication than previously taught. Hardware considerations are also reduced due to the lack of a need for extensive matrix by matrix calculations.
Sponsorship: Illinois Institute of Technology
United States Patent
Show less

Title: Adaptive Reuse Hybrid Development: AdaptiveReuseHybridDevelopment_Poster_SP11
Creator: Jarzabkowski, Henry
Date: 5/4/2011, 2011-05
Description: Producing and designing a prototype hybrid use development strategy for a neighboring pair of preexisting historical building in Chicago’s...
Show moreProducing and designing a prototype hybrid use development strategy for a neighboring pair of preexisting historical building in Chicago’s North side community of Lakeview.
Show less

Title: Confinement in Porous Material by Driving Out Water and Substituting Sealent
Creator: Bridges, Jack E.
Date: 2009-05-08, 1990-02-13
Description: To provide confinement in a porous medium in the earth, a limited region of the porous medium is heated to drive substantially all of the free...
Show moreTo provide confinement in a porous medium in the earth, a limited region of the porous medium is heated to drive substantially all of the free water from open spaces of the medium in the region. After heating, liquid material is introduced into the open spaces in the medium, which liquid material will set into a substantially solid structure. The liquid material is then set in the open spaces to form a substantially solid structure in the medium in the region.
Sponsorship: IIT Research Institute
United States Patent
Show less

Title: Test and report of a modern ice plant
Creator: Heim, Karl, Fitch, Joseph E, Jones, Charles H, Hirschfeld, George
Date: 2009, 1909
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/testreportofmode00heim
Thesis (B.S.)--Armour Institute of Technology

Title: Winding and Reeling Mechanism
Creator: Zenner, Raymond E.
Date: 2012-03-20, 1951-04-17
Description: Sponsorship: Armour Research Foundation of Illinois Institute of Technology
United States Patent

Title: Terminal 3, Gunazhou Baiyun International Airport , China: HuaShen Master Project Arch 593 (30X40)
Creator: Shen, Hua
Date: 2012-05, 2012-05

Title: THERMAL STABILITY OF FOOD ALLERGENS AND NONALLERGENIC PROTEINS: A COMPARATIVE STUDY
Creator: Wu, Yan
Date: 2015, 2015-07
Description: Thermal stability has been proposed as a criterion to assess the allergenic potential of genetically modified foods, but there is a lack of...
Show moreThermal stability has been proposed as a criterion to assess the allergenic potential of genetically modified foods, but there is a lack of information on the relative thermal stability of food allergens vs. nonallergenic proteins. This study compared the thermal stability of several paired food allergens and nonallergenic proteins by measuring the changes in their solubility, antigenicity and thermodynamic properties after thermal treatment using BCA total protein assay, inhibition ELISA assay, Differential Scanning Calorimetry and Far-UV Circular Dichroism Spectroscopy. The selected protein pairs included bovine α-lactalbumin (allergen) vs. human α-lactalbumin (nonallergen), peanut lectin (allergen) vs. concanavalin A (nonallergen), soybean trypsin inhibitor (allergen) vs. lima bean trypsin inhibitor (nonallergen). With respect to protein solubility, a greater thermal stability was observed for: (1) bovine α-lactalbumin (bovine ALA) when it was autoclaved in water compared with human α-lactalbumin (human ALA) (2) peanut lectin when it was boiled or autoclaved in water compared with concanavalin A (ConA) and (3) soybean trypsin inhibitor (STI) when it was boiled in water or PBS, or autoclaved in water compared with lima bean trypsin inhibitor (LTI). Regarding TM values determined by DSC: (1) bovine ALA was more thermally stable than human ALA under both dry-heat treatment and moist-heat treatment (2) ConA was more thermally stable than peanut lectin during moist-heat treatment, while a greater thermal stability was observed for peanut lectin when the protein was under dry-heat treatment (3) LTI was more thermally stable than STI during heating in water or under dry-heat treatment, while a greater thermal stability was observed for STI when the protein was heated in PBS. Based on CD analyses, (1) bovine ALA was more thermally stable than human ALA (2) peanut lectin was more thermally stable than ConA (3) STI and LTI showed similar thermal stability. With respect to antigenicity, a greater thermal stability was observed for: (1) human ALA when it was autoclaved in water compared with bovine ALA (2) ConA when it was boiled or autoclaved in water, or under dry-heat treatment at 176℃ compared with peanut lectin (3) STI when it was autoclaved in PBS compared with LTI. In summary, allergens tended to be more thermally stable than nonallergenic proteins with respect to solubility, but there was no consistent trend in the relative thermal stability of these protein pairs regarding the antigenicity or the TM values. No correlation between thermal stability of the proteins and their allergenic potential was observed.ConA (3) STI and LTI showed similar thermal stability. With respect to antigenicity, a greater thermal stability was observed for: (1) human ALA when it was autoclaved in water compared with bovine ALA (2) ConA when it was boiled or autoclaved in water, or under dry-heat treatment at 176℃ compared with peanut lectin (3) STI when it was autoclaved in PBS compared with LTI. In summary, allergens tended to be more thermally stable than nonallergenic proteins with respect to solubility, but there was no consistent trend in the relative thermal stability of these protein pairs regarding the antigenicity or the TM values. No correlation between thermal stability of the proteins and their allergenic potential was observed.
M.S. in Food Safety and Technology, July 2015
Show less

Title: The world's playground: final_board_2
Creator: Yeon, Eungju
Date: 2012-04-25, 2012-05
Description: Olympic cultural center for 2012, Korea

Title: DEVELOPMENT OF AN EMBEDDED CONTROLLER FOR TWO QUADRANT OPERATION OF BLDC MOTORS IN AUTOMOTIVE APPLICATIONS
Creator: Liu, Yizhe
Date: 2011-07-06, 2011-07
Description: Due to growing concerns over the availability of non-renewable petroleum products and the increasing emphasis on protecting our environment...
Show moreDue to growing concerns over the availability of non-renewable petroleum products and the increasing emphasis on protecting our environment from green house gas emissions, plug-in hybrid electric vehicle and hybrid electric vehicles have been gaining increasing popularity over recent years. This has led to the design of advanced drive systems using different electric motors such as BLDC, PMSM, IM and SRM. An electric motor/generator requires controller that not only has a strong I/O control function, but also high speed signal processing ability for realizing real time control. Therefore, a DSP (Digital Signal Processors), which integrates flexible multiple PWM signal generator, high speed high precision ADC and encoder interface for motor speed and position feedback, is considered as one of the strongest controllers for electric motor control. Owing to a growing emphasis on identification, interference, and communication of security services of drive train in intelligent PHEVs and HEVs, a DSP can also be used to identify and isolate security issues in the integrity of the drive train in PHEVs and EVs. This thesis has two main contributions: a) it focuses on the development of an embedded controller using TMS320LF2812 DSP to realize two quadrant control of the BLDC; and b) it develops an automotive test bench to identify and investigate some potential security issues using the embedded controller’s eCAN communication function.
M.S. in Electrical Engineering, May 2011
Show less

Title: Bifilar Magnetic Recording System
Creator: Camras, Marvin
Date: 1949-09-13
Description: Sponsorship: Armour Research Foundation of Illinois Institute of Technology
United States Patent

Title: Detonator
Creator: Savitt, Jacob, Stresau, Richard H., Weber, John P.
Date: 1962-11-06
Description: Sponsorship: Armour Research Foundation of Illinois Institute of Technology
United States Patent

Title: Distributed Feed Fuel Cell Stack
Creator: Al-qattan, Ayman M., Chmielewski, Donald J., Al-hallaj, Said
Date: 2012-03-20, 2009-12-15
Description: A fuel cell having a distributed fuel feed in which the heat generation profile can be better controlled. Fuel channel stack and system...
Show moreA fuel cell having a distributed fuel feed in which the heat generation profile can be better controlled. Fuel channel stack and system efficiency improvements are achieved.
Sponsorship: Illinois Institute of Technology
United States Patent
Show less

Title: Hafnium Base Alloy (Boron)
Creator: Hill, Vernon L., Nichols, Harry R.
Date: 2009-04-27, 1971-11-23
Description: Hafnium tantalum alloy containing about 15 and about 35 weight percent tantalum, between about 0.03 and about 2.0 weight percent boron, and at...
Show moreHafnium tantalum alloy containing about 15 and about 35 weight percent tantalum, between about 0.03 and about 2.0 weight percent boron, and at least one additional alloying agent selected from chromium, silicon and aluminum.
Sponsorship: IIT Research Institute
United States Patent
Show less

Title: waterWORKS
Creator: Webster, Reed
Date: 5/3/2011, 2011-05
Description: Water shortages will be a global problem by the year 2025. With the Great Lakes Basin accounting for 95% of the fresh water in the United...
Show moreWater shortages will be a global problem by the year 2025. With the Great Lakes Basin accounting for 95% of the fresh water in the United States it will soon become our most valuable natural resource. In re-defining urban relationships to the Great Lakes a healthy, ecologically stable, and regenerative water system can become our greatest national asset. Providing a prototype solution for one of these urban areas (Traverse City, MI) may set a precedent for long term protection of the Great Lakes.
Show less

Title: HIGH RISE BUILDING: turbine whole view
Creator: Sun, Yanfang
Date: 2012-05-08, 2012-05
Description: MIXED USE HIGH RISE BUILDING DESIGN COMBINING WIND TURBINE, IN ORDER TO FIND A SUSTAINABLE WAY TO USING CLEAN ENERGY

Title: Signal Transducer Systems
Creator: Camras, Marvin
Date: 4/24/2009, 1970-04-14
Description: Sponsorship: IIT Research Institute
United States Patent

Title: Two-phase Heat Transport Device using Electrohydrodynamic Conduction Pumping
Creator: Yagoobi, Jamal Seyed, Pearson, Matthew R.
Date: 2013-10-30, 2013-10-29
Description: An electrohydrodynamic conduction liquid pumping system having a vessel configured to contain a liquid therein, a single pair or multi-pairs...
Show moreAn electrohydrodynamic conduction liquid pumping system having a vessel configured to contain a liquid therein, a single pair or multi-pairs of electrodes disposed in a circularly spaced apart relationship to each other inside the vessel and configured to be oriented in the liquid. A power supply is coupled to the electrodes and configured to generate electric fields in-between each electrode pair to induce a net radial pumping of the liquid. A heat source is provided to produce heat sufficient to boil and vaporize the liquid while non-vaporized liquid moving toward the heat source prevents over-heating of the heat source. A heat sink is configured to have a operating temperature below the vaporization temperature of the liquid so that contact of the vapor with the heat sink will condense the vapor into a liquid to replenish the liquid supply moving toward the heat source.
Sponsorship: Illinois Institute of Technology
United States Patent
Primary US Patent Classification 417/48
US Patent Classification 361/700
US Patent Classification 361/702
International Patent Classification F04B 37/00
International Patent Classification H05K 7/20
Show less

Title: Piston_PistonPinManufacturingProcessImprovementIPRO339MidTermPresentationSp11

repository.iit

Search the repository

Pages

Pages

Enabled Filters

Refine Results

Type

Date

Academic status of creator

Department

Subject

Creator

Part of

Rights