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Title: MODEL-BASED EXPLORATION OF THE FEASIBILITY OF CREATING MULTIPLE PROPERTY GRADIENT IN CROSSLINKED POLYMER FILMS IN CONTROLLED LIVING POLYMERIZATION
Creator: Qin, Zikai
Date: 2014, 2014-05
Description: The functional gradient materials have been widely used in chemical engineering, biomedical engineering and tissue engineering since they have...
Show moreThe functional gradient materials have been widely used in chemical engineering, biomedical engineering and tissue engineering since they have been reported because of their admirable mechanical, physical and chemical properties. Several traditional methods of synthesis gradient materials are known to all. Here we introduced a new mathematical model of designing and producing crosslinked polymeric films with target multiple gradients. We derive our model from batch reactor system and explore how each condition of the system affects the gradient of the polymer film. Then we extend to semi-batch reactor to control the gradient in crosslink density and set up different strategies to make the target multiple gradient crosslink density accomplish. With any given target gradient crosslinked polymer film, we can make an exact similar film in our model.
M.S. in Chemical Engineering, May 2014
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Title: The study of the formation of chromates
Creator: Kaplon, H., Schiffman, H. M.
Date: 2009, 1921
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/studyofformation00kapl
Thesis (B.S.)--Armour Institute of Technology; Bibliography: leaf 30

Title: AGENT-BASED MODELING OF ANGIOGENESIS: EXPLORATION OF THE EFFECTS OF VEGF DELIVERY STRATEGIES ON PROMOTING ANGIOGENESIS
Creator: Xiao, Nan
Date: 2015, 2015-05
Description: This is a dissertation about three-dimensional agent-based modeling (ABM) of angiogenesis within porous scaffold. Tissue engineering...
Show moreThis is a dissertation about three-dimensional agent-based modeling (ABM) of angiogenesis within porous scaffold. Tissue engineering technology provides great benefits for humanity in maintaining healthy tissue formation and disease rehabilitation. However, biomedical experiments, especially animal experiments, are very costly, timeconsuming and high technological level of equipment required. The computational modeling can provide an efficient alternative to biomedical experiments in strategy design and assist clinical research. To simulate the angiogenesis process, an agent-based model was developed using java-based Repast toolkit. The purpose of this research is to explore the effects of different Vascular Endothelial Growth Factor (VEGF) delivery methods in promoting angiogenesis. The work here includes four parts: a) model verification by comparing simulation results with experimental results; b) exploration of different VEGF delivery methods by changing total dose and release rate; c) exploration of the effects of prevascularized strategies; d) development of a tissue cell VEGF secretion model. The simulation results showed that: angiogenesis can be promoted by increasing VEGF total dose or decreasing releasing rate; prevascularized scaffolds can improve new vascular network formation and result in better invasion depth; pre-seeded tissue cells in the scaffold can provide a continuous source of VEGF and promote angiogenesis. This ABM can provide a good reference for the design of biomedical applications.
M.S. in Chemical Engineering, May 2015
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Title: EFFECT OF REACTANT CONCENTRATIONS AND AGING EFFECT IN THE SYNTHESIS OF SILVER NANORODS
Creator: Wang, Guan
Date: 2016, 2016-05
Description: In the recent years, anisotropic metallic nanoparticles have drawn much attention because of their unique optical properties. Particularly,...
Show moreIn the recent years, anisotropic metallic nanoparticles have drawn much attention because of their unique optical properties. Particularly, gold and silver nanorods show great potential in extensive applications such as health care, food storage, drug delivery, biosensor, and cancer treatment. Among a variety of nanorods synthesis methods, the seed-mediated growth approach stands out due to its mild and convenient experimental conditions. However, there exist two defects of this method, the poor reproducibility and low yield of nanorods. In order to create nanoparticle systems of reproducible quality in high yields, a deeper understanding of the mechanism of nanorods formation as well as identifying the more important variables is necessary. In this study, the original seed-mediated growth method has been modified to promote the reproducibility and yield of nanorods. Effects of CTAB concentration and ages of growth solution have been investigated in the nanorods formation process. The results suggest that a high concentration of CTAB is not necessary for the growth process and the age of growth solution can affect the optical performance of nanorods. In a brief survey on the stability property of nanorods, it shows that the degradation rate decreases with increasing concentrations of CTAB.
M.S. in Chemical Engineering, May 2016
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Title: MODELING, CONTROL, AND DESIGN OF HYBRID FUEL CELL VEHICLES
Creator: Ahmed, Syed
Date: 2011-12, 2011-12
Description: The Polymer Electrolyte Membrane Fuel Cell (PEMFC) has been projected to be the fuel cell of choice for future automotive applications. Among...
Show moreThe Polymer Electrolyte Membrane Fuel Cell (PEMFC) has been projected to be the fuel cell of choice for future automotive applications. Among the challenging aspects of this application is maintaining highly efficient operation of the fuel cell. The key component of the PEMFC, the Nafion Membrane, can reach two critical states: drying and flooding. In drying, high resistance prevents normal operation of the fuel cell. In flooding, reactants are prevented from reaching reaction sites and there is a reduction of performance of the fuel cell. To address the first point, a spatially distributed along the plane membrane model was developed and tested with proportional-integral control of voltage and temperature. To analyze the occurrence of severe and frequent changes in power demand, a model aimed at mimicking the load expected in a fuel cell vehicle, including a DC motor, DC-DC converters and a rechargeable battery for peak-shaving and regenerative braking was developed. The model includes rotational and translational inertia as well as a simple wind resistance model for a vehicle. In contrast to simple lab-focused loads where load impendence is directly manipulated, the manipulated variable within this load is the DC-DC converter gain. Based on this model a control system architecture was developed consisting of a number of low level regulatory loops, a power distributor for peak-shaving and finally a high level loop for tracking vehicle speed. After understanding the load demands to a fuel cell vehicle with only a battery, the issue of multiple energy storage technologies is addressed. Designing a vehicle with these technologies poses an optimization problem. A high-level model of a fuel cell vehicle with two storage technologies, a battery and super-capacitor was developed. The model accounted for the constraints of each component and a drive cycle characterized the power demand. An economic-based optimization problem xv was posed whereas its objective was to minimize the capital cost of the system, while meeting power demand and keeping the technologies within their constraints. The result of the optimization provided a controller from which a high-level power coordination unit can be developed for the fuel cell vehicle.
Ph.D. in Chemical Engineering, December 2011
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Title: Some observations on the baking test as commercially applied to wheat and flour
Creator: Pirrie, Peter Gustave
Date: 2009, 1913
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/someobservations00pirr
Thesis (B.S.)--Armour Institute of Technology; Includes index

Title: UNDERSTANDING THE MEMBRANE ACTIVITY OF ACYL LYSINE OLIGOMERS
Creator: Lingaraju, Mahesh
Date: 2012-07-10, 2012-07
Description: In the past two decades, Antimicrobial peptides (AMPs) have attracted considerable interest because of their potential therapeutic use as...
Show moreIn the past two decades, Antimicrobial peptides (AMPs) have attracted considerable interest because of their potential therapeutic use as antibiotics, antivirals, and antitumoural drugs. However, there are a number of serious challenges on the way toward bringing AMPs onto the market which include their rapid in vivo degradation, high production costs, reduced activity in physiological conditions, etc. To overcome these problems and yet to capitalize on the immense potential of AMPs, extensive efforts to develop their non-natural mimics have been recently made. A better understanding of the structure-activity relationships of AMPs is essential to the creation of a successful peptidomimetic compound. It has been widely accepted that AMPs kill pathogens by disrupting the cell membrane or invading the cytoplasm and inhibiting core metabolic functions. Thus, the pathogenic membrane plays a crucial role either as an immediate target or as a barrier that must be traversed. Herein, we have investigated the role of charge and hydrophobicity in the interplay between membrane-active molecules (Oligomers of acyl lysine) and model bacterial or host cell membranes using constant-pressure insertion assays, synchrotron X-ray reflectivity (XR) and grazing incident-angle X-ray diffraction (GIXD). The outer surface of a membrane was approximated by a planar lipid monolayer at the air-liquid interface, whose composition was modified in accordance with the cell being modelled. The presented results have helped us to arrive at a general mechanism by which the OAKs seem to interact with lipids which is strongly dependent upon the charge density of the monolayer, charge and hydrophilicity of the molecule and presence of freely accessible hydrophobic regions. The results indicate the molecules fail to interact with the acyl chains when they poorly negotiate with the head group or when they lack accessible hydrophobic regions. Overall, presented results advance current understanding of the mechanism of action of flexible AMP mimics on bacterial membranes and will no doubt aid in the rational design and optimization of non-natural mimics of antimicrobial peptides that will be effective against multidrug resistant bacteria and cancer cells. Nevertheless, future work is required to further understand the critical factors leading to potent anti-infective activity of antimicrobials.
M.S. in Molecular Biochemistry and Biophysics, July 2012
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Title: Study of the chemical and physical properties of molding sands
Creator: Woldenberg, Maximilian
Date: 2009, 1906
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/studyofchemicalp00wold
Thesis (B.S.)--Armour Institute of Technology; Bibliography: leaves 26-29

Title: Test of a new method for the fixation of atmospheric nitrogen
Creator: Buttner, William C., Knaus, Peter J.
Date: 2009, 1913
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/testofnewmethodf00butt
Thesis (B.S.)--Armour Institute of Technology; Bibliography: leaf 37

Title: A study of resorcinol production
Creator: Bernstein, Joseph M., Vogt, Emil G.
Date: 2009, 1920
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/studyofresorcino00bern
Thesis (B.S.)--Armour Institute of Technology

Title: A technical study of the solids of skimmed milk
Creator: Whittington, J. A., Wilson, L. T., Yonkman, W.
Date: 2009, 1914
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/technicalstudyof00whit
Thesis (B.S.)--Armour Institute of Technology; Bibliography: leaf 25

Title: YIELD STRESS MEASUREMENTS USING NOVEL SQUEEZING FLOWS
Creator: Ward, Daniel
Date: 2015, 2015-12
Description: Techniques for measuring the yield stress of materials are numerous, but often plagued with diffculties and uncertainties in measurement. The...
Show moreTechniques for measuring the yield stress of materials are numerous, but often plagued with diffculties and uncertainties in measurement. The primary methods include shear rheometry and, more recently, squeezing ow. Shear rheometry requires care on the part of the experimentalist to generate uniform flow fields and avoid shear banding or wall slip which may interfere with measurements. Squeezing fow tests are often performed with poorly controlled boundary conditions creating complicated flow fields. Further, the effects of the experimental modifications made to produce these boundary conditions in measurements are often not investigated and simply ignored. The main objective of this study was to develop a novel measuring technique to study the yield stress behavior of a model material, Carbopol. First attempts were made towards a novel lubricant injection squeezing (LIS) ow technique based on the continuous lubricated squeezing ow (CLSF) setup, as well as a novel lubricant film squeezing (LFS) technique which will allow measurement of the yield stress without the complicated treatment of either the sample or experimental setup required by currently favored methods. The novel techniques were developed and validated by direct comparison with shear measurements, the current gold standard for determining yield stress. Common squeezing techniques for characterizing yield stress fluids were also compared and found to be inadequate and inconsistent when compared to the shear measurements. The results from this study showed that the LIS and LFS methods are able to qualitatively determine a yield stress, but further investigation is required before they can be achieve their full potential as viable methods for determine yield stress.
M.S. in Chemical Engineering, December 2015
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Title: The treatment of stock yard's sewage by the activated sludge process
Creator: Newman, Joseph Julius
Date: 2009, 1917
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/treatmentofstock00newm
Thesis (B.S.)--Armour Institute of Technology; Includes folded leaves in back pocket

Title: Investigation of special steels
Creator: Andrews, E. E., Winser, R. A.
Date: 2009, 1908
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/investigationofs00andr
Thesis (B.S.)--Armour Institute of Technology

Title: MODELING AND NUMERICAL SIMULATION OF WIND TURBINE PERFORMANCE IN RAINY CONDITIONS USING A MULTIPHASE FLOW APPROACH
Creator: Cai, Ming
Date: 2012-04-25, 2012-05
Description: Wind energy is becoming one of the key renewable sources of energy in the United States and the world due to its environmental and economic...
Show moreWind energy is becoming one of the key renewable sources of energy in the United States and the world due to its environmental and economic advantages and absence of water requirements. The performance of a wind turbine is largely affected by surrounding environments and the total power output of a wind farm is closely related to meteorological phenomena such as rain and icing. Investigating the effects of these phenomena is necessary to improve the design and performance of the wind turbines. In this research, we focused on the study of wind turbine performance in rainy conditions as the stepping stone to the future study of icing. We applied Computational Fluid Dynamics (CFD) technology to investigate the impact of rain on wind turbines. A novel model coupling the Lagrangian method with the Eulerian method was developed. The rain droplet was tracked in the Lagrangian frame due to its discrete nature, and the film formed on the wind turbine was simulated with the Eulerian Volume of Fluid Model (VOF). The performance loss and impact on the flow field were also studied. Numerical studies have been conducted on 2-Dimensional S809 airfoils and 3- Dimensional Horizontal Axial Wind Turbines (HAWT). The performance loss under heavy rain conditions was observed and the flow field was analyzed. The impact of air moisture content on wind turbine performance was also studied using our 3-D model. Due to the lack of experimental data on wind turbine performance under heavy rain conditions, our coupled two phase flow model was applied to a NACA 64-210 airfoil to compare with the experimental data in rainy conditions. Simulation results using our model showed good agreement with the experimental data.
M.S. in Chemical and Biological Engineering, May 2012
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Title: Micro-structure of certain high-speed steels
Creator: Pulsifer, H. B.
Date: 2009, 1915
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/microstructureof00puls
Thesis (B.S.)--Armour Institute of Technology; Bibliography: leaves 3-6

Title: The crystallization of potassium manganate
Creator: Luckow, W. C.
Date: 2009, 1920
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/crystallizationo00luck
Thesis (B.S.)--Armour Institute of Technology, 1920 Bibliography: leaves 48-49 B.S. in...
Show morehttp://www.archive.org/details/crystallizationo00luck
Thesis (B.S.)--Armour Institute of Technology, 1920 Bibliography: leaves 48-49 B.S. in Chemical Engineering, 1920
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Title: The electrostatic precipitation of soaps from oils
Creator: Dowse, G. M., Brueckner, M. O.
Date: 2009, 1921
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/electrostaticpre00dows
Thesis (B.S.)--Armour Institute of Technology; Bibliography: leaves 23-24

Title: Electrolytic deposition of copper from matte
Creator: Wiard, W. H., Smith, H. C.
Date: 2009, 1909
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/electrolyticdepo00wiar
Thesis (B.S.)--Armour Institute of Technology

Title: SMART GRID COORDINATION OF A CENTRALIZED POWER AND COOLING FOR AN URBAN COMMUNITY
Creator: Franco, Diego Pacheco
Date: 2016, 2016-05
Description: Because the world’s fossil fuel reserves are finite, it is essential to substantially improve the efficiency of all energy consumers. Heating,...
Show moreBecause the world’s fossil fuel reserves are finite, it is essential to substantially improve the efficiency of all energy consumers. Heating, ventilating and air conditioning (HVAC) accounts for 45% of energy consumption in residential buildings. Thus, this project studied and proposed solutions to improve the efficiency of such systems. The project begins with an analysis of a cooling system using electric chillers for a new hypothetical residential community in the Chicago area. Then, two new hybrid configurations were proposed: the utilization of electric and absorption chillers and then this system was augmented with a Thermal Energy Storage (TES) system. A simulation environment based on Matlab/Simulink®, using the concepts of Economic Model Predictive Control (EMPC) was developed to evaluate the performance of these configurations. The main benefits found were the increasing energy efficiency, the environmental impacts reduction and a reduction of more than 70% in operating costs (in some cases, profit was generated).
M.S. in Chemical Engineering, May 2016
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