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Title: STUDY OF PARALLEL AUTOCATALYTIC REACTIONS IN COUPLED REACTORS
Creator: Hegishte, Swapnil R.
Date: 2012-04-29, 2012-05
Description: The inherent nonlinearity in cubic autocatalytic system has been the reason for its study in various combinations. Parallel cubic...
Show moreThe inherent nonlinearity in cubic autocatalytic system has been the reason for its study in various combinations. Parallel cubic autocatalytic reactions are analogous to the simultaneous consumption of multiple substrates by the same autocatalytic species. Steady state analysis reveals that there can be up to five steady states possible and two of them are always unstable. Individual parameter effect on steady state structure leads to identification of an isola, mushroom and other exotic patterns on equilibrium plot. Stability analysis leads to developing an operating diagram, which also explains the oscillatory behavior with the study of Hopf bifurcation. Concept of coupled isothermal continuous stirred tank reactors enriches the complexity of the system and the steady state behavior. The two reactors are identical in terms of the feed concentrations and the reactor space time. The coupled reactor system can have maximum twenty five steady states at very low interaction rate (R → 0), nine out of which may be stable. The steady state analysis portrays the patterns for transition in number of steady states as R is varied. Appearance of an additional Hopf point confirms the effect of complexity of coupled reactors configuration on stability structure of the system. Numerical simulations exhibit the rich steady state behavior in coupled reactors. Dynamic study for single reactor confirms the possibility of chaos in multistable parameter space. The coupled reactor dynamics focuses on the limit cycle interactions and emergence of chaos due to an added complexity.
M.S. in Chemical Engineering, May 2012
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Title: Changes in the nitrogen constituents of water
Creator: Elkin, Maurice, Collins, W. R.
Date: 2009, 1906
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/changesinnitroge00elki
Thesis (B.S.)--Armour Institute of Technology

Title: The cementing value of bituminous binders
Creator: Hirsh, Louis
Date: 2009, 1914
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/cementingvalueof00hirs
Thesis (B.S.)--Armour Institute of Technology, 1914 Includes bibliographical references ...
Show morehttp://www.archive.org/details/cementingvalueof00hirs
Thesis (B.S.)--Armour Institute of Technology, 1914 Includes bibliographical references (leaf 65) and index B.S. in Chemical Engineering, 1914
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Title: Determination of benzene and its derivatives in admixtures with paraffin hydrocarbons
Creator: Mccauley, William T.
Date: 2009, 1920
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/determinationofb00mcca
Thesis (B.S.)--Armour Institute of Technology; Bibliography: leaves 32-36

Title: Determination of benzene in commercial gasoline
Creator: Scherger, Raymond K.
Date: 2009, 1921
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/determinationofb00sche
Thesis (B.S.)--Armour Institute of Technology; Bibliography: leaves 30-35

Title: The determination of benzene in petroleum distillates
Creator: Mendius, William
Date: 2009, 1919
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/determinationofb00mend
Thesis (B.S.)--Armour Institute of Technology

Title: ELECTROCHEMICAL CONTINUOUS AND AB INITIO DFT MODELING OF ELECTRODE REACTIONS IN PEM FUEL CELLS, AND LI-ION AND MAGNESIUM BATTERIES
Creator: Ramanathan, Mayandi
Date: 2013, 2013-07
Description: Electrochemical energy conversion and storage systems are set to play a major role in the scheme of providing clean and renewable energy to...
Show moreElectrochemical energy conversion and storage systems are set to play a major role in the scheme of providing clean and renewable energy to the growing energy demands, both in the nearby and long-term future. PEM fuel cells are the widely tested energy conversion devices with hydrogen as fuel and air as oxidant. Li-ion batteries are commercialized for short and medium range energy demands. But for fulfilling the long range energy demands, research in some new technologies such as Li-air, Magnesium and Sodium batteries are in progress. Magnesium batteries have huge potential to be a high energy density battery suitable for long range electric vehicles and electrical grid energy storage. In PEM fuel cells, Oxygen reduction reaction is the performance limiting factor due to the sluggish reaction kinetics and expensive, but relatively stable Pt catalyst. In the present study, combined DFT modeling and experimental annealing procedure is being employed to improve the ORR activity of Pd by alloying with transition metal elements such as Ni, Cu and Fe. In Li-ion battery, LiFePO4 is the widely commercialized cathode material, but it suffers its limitation of possessing poor electronic conductivity, which affects the cell performance at high discharge rates. A simple isothermal, one-dimensional John Newman Li-ion battery model is being employed to study the effects of changes in LiFePO4, carbon and binder composition towards changes in electrode porosity, electrical conductivity and cell capacity. With the help of modeling results, an optimum composition zone is located for optimizing the high rate performance. In Magnesium batteries, a modified isothermal, one-dimensional John Newman battery model was employed to study the characteristics of the Mg intercalation reactions, predict the performance of the Bi anode electrode and also understand the underlying phenomena and properties that dictate the characteristics of the Mg intercalation in Bi electrode.
PH.D in Chemical Engineering, July 2013
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Title: The efficiency of heat transmission in a vacuum evaporator
Creator: Diemecke, Curt W, Yamamoto, I
Date: 2009, 1915
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/efficiencyofheat00diem
Thesis (B.S.)--Armour Institute of Technology, 1915 B.S. in Chemical Engineering, 1915

Title: Efficiency of heat transmission in a vacuum evaporator
Creator: Agazim, Toly, Shakman, James G.
Date: 2009, 1914
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/efficiencyofheat00agaz
Thesis (B.S.)--Armour Institute of Technology

Title: An engineering study of the coals on the Chicago Market
Creator: Stem, L. H.
Date: 2009, 1905
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/engineeringstudy00stem
Thesis (B.S.)--Armour Institute of Technology

Title: Engineering aspects of the manufacture of edible pastes
Creator: Pirrie, Gustave Peter
Date: 2009, 1917
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/engineeringaspec00pirr
Thesis (B.S.)--Armour Institute of Technology, 1917 B.S. in Chemical Engineering, 1917

Title: CHARACTERIZATION OF DROSOPHILA MELANOGASTER FONDUE MUTANTS
Creator: Bajzek, Clara
Date: 2013, 2013-12
Description: Efficient clotting is essential to invertebrates with open circulatory systems. Like blood clotting in vertebrates, coagulation is important...
Show moreEfficient clotting is essential to invertebrates with open circulatory systems. Like blood clotting in vertebrates, coagulation is important to stop bleeding and prevent bacteria from entering at the wound site of invertebrates. Multiple Drosophila clotting factors have been identified and work has started to study the effects of a few in vitro and more importantly in vivo. Here we characterize the fondue clotting factor mutants. Effects are seen in vitro for fon RNAi knock downs, hypmorph mutants, and null mutants we generated by excising a Minos element. However, with the current in vivo assay, no coagulation phenotype is observed. We developed a new quick and easy in vivo assay, called the capillary assay, to measure how much wounded larvae bleed. Although findings from this assay showed strong results for hmlf03374 mutants, fon mutants still showed no in vivo phenotype with this assay. This reinforces the idea of redundant hemostatic mechanisms in Drosophila larvae. In addition to coagulation phenotypes, fon mutants are pupal lethal and have an elongated pupal shape. Driving the expression of fondue-GFP fusion construct showed that fondue is expressed in a stripped pattern along the body of the larvae. The similarity of this pattern to the expression pattern of tiggrin, a protein involved in muscle attachment, led to the discovery that some clotting factors, including fondue, act in muscle attachment in Drosophila.
M.S. in Biology, December 2013
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Title: The composition and utilization of wood tar
Creator: James, Garrett B, Sieck, Herbert.
Date: 2009, 1911
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/compositionutili00jame
Thesis (B.S.)--Armour Institute of Technology, 1911 Bibliography: leaf 27 B.S. in...
Show morehttp://www.archive.org/details/compositionutili00jame
Thesis (B.S.)--Armour Institute of Technology, 1911 Bibliography: leaf 27 B.S. in Chemical Engineering, 1911
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Title: The drossing of zinc in galvanizing pans
Creator: Whittington, J. A.
Date: 2009, 1919
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/drossingofzincin00whit
Thesis (B.S.)--Armour Institute of Technology; Bibliography: leaf 45

Title: Distillation of coal tar
Creator: Wilsnack, G. C., Lunak, S. E.
Date: 2009, 1908
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/distillationofco00wils
Thesis (B.S.)--Armour Institute of Technology

Title: Drip oil distillates boiling point above 110 Centigrade
Creator: Isenberg, Nathan, Luckow, William Charles
Date: 2009, 1916
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/dripoildistillat00isen
Thesis (B.S.)--Armour Institute of Technology; Bibliography: leaf 35

Title: Extraction of sugar from dried sugar beets
Creator: Sherman, R.f., Ettenson, L. Z., Patrick, W. W.
Date: 2009, 1908
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/extractionofsuga00sher
Thesis (B.S.)--Armour Institute of Technology

Title: A comparison of the chemical and physical properties of vitrified bricks
Creator: Thompson, J. K., De Beer, F. M.
Date: 2009, 1905
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/comparisonofchem00thom
Thesis (B.S.)--Armour Institute of Technology

Title: Design of a fifty ton sulphite pulp mill
Creator: Flood, W. H., Nicholson, Victor
Date: 2009, 1906
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/designoffiftyton00floo
Thesis (B.S.)--Armour Institute of Technology; Bibliography: (leaves: 27-28)

Title: INTERACTIONS BETWEEN NANOFLUIDS AND A SOLID SUBSTRATE: ROLE OF pH AND NANOFLUID PARTICLE CONCENTRATION ON THE THREE-PHASE CONTACT ANGLE
Creator: Horiuchi, Hiroki
Date: 2013, 2013-12
Description: We investigate the effect of pH on the interactions between a silica slurry and a silica wafer substrate (TEOS) made by the chemical vapor...
Show moreWe investigate the effect of pH on the interactions between a silica slurry and a silica wafer substrate (TEOS) made by the chemical vapor deposition of tetraethylorthosilicate gas in order to understand the optimization of the Chemical Mechanical Polishing (CMP) process and develop a high-performance silica slurry. The nature of the interactions is probed by the solid-liquid interfacial energy and the electrostatic surface potential at the solid surface. An overview of the CMP process is discussed in Chapter 1. Conventional techniques used to measure the electrostatic potential at the solid/liquid interface, such as the streaming potential and potentiometric titration method, are reviewed. Although there are many techniques for measuring the surface potential of powders, such as potentiometric titration and zeta potential measurement, there is no well-established technique for measuring the surface potential of the silica wafer. Therefore, in this research, we developed a methodology to determine the surface potential and surface charge density of a silica wafer substrate in contact with a slurry. We developed a novel method for calculating the surface potential and surface charge density using the experimental data of the three-phase contact angle in conjunction with the Young- Lippmann and the Poisson-Boltzmann equations. The surface chemistry of silica is discussed in Chapter 2 to elucidate the origin of the surface charge due to the ionization of the silanol groups on a silica wafer. Since the silica wafer is always in contact with the aqueous solution during the CMP process, we specifically focus on the behavior of silica in aqueous solutions. xvi In Chapters 3 and 4, the three-phase contact angle (TPCA) on silica is measured as a function of the pH by the goniometric technique. The surface potential and surface charge density at the silica/water surface are calculated by a model based on the Young- Lippmann equation in conjunction with the Gouy-Chapman model for the electric double layer. In measurements of the TPCA on silica, two distinct regions are identified with a boundary at pH 9.5—showing a dominance of the surface ionization of silanol groups below pH 9.5 and a dominance of the dissolution of silica into the aqueous solution above pH 9.5. Since the surface chemistry changes above pH 9.5, the model is applied to solutions below pH 9.5 (ionization dominant) for the calculation of the surface potential and surface charge density at the silica/aqueous interface. In order to evaluate the model, a galvanic mica cell was made of a mica sheet and the surface potential was measured directly at the mica/water interface. The model results are validated by the experimental data from the literature, as well as the results obtained by the potentiometric titration method and the electro-kinetic measurements. The interactions between the nanofluid and solid surface are explored in Chapter 5. Measurements of three-phase contact angle of the nanofluid on a silica substrate show that the contact angle decreases as the volume fraction increases due to the formation of particle layers on the solid surface. We conclude that it is driven by the depletion attractions between the nanoparticles and a solid surface. In the calculations, the energy (based on Young’s equation) and the structural energy of silica particles (based on statistical mechanics---Henderson’s equation) are in good agreement, indicating that the formation of the nanoparticle layering occurs near the solid surface, as expected. We reference the measurement of the forces between two mica surfaces by Israelachvili and xvii Pashley (1983 and 1984) to calculate the interaction energy against the distance between the two surfaces; we found that the strong repulsive force (hydration force) at a short distance (less than 2 nm) gives rise to enough energy to change the three-phase contact angle. In addition, the calculated inter-particle energy due to the hydration force (by using a statistical mechanics approach, see Trokhymchuck et al. 2001) shows that the hydration force can dramatically increase the inter-particle energy in the case of a volume fraction of water that is from 40 to 45%. The inter-particle energy corresponds to the energy change of 3-5⁰ in the three-phase contact angle, which is same as that found in our experimental data obtained from the contact angle measurements. Finally, we conclude that the hydration force between the silica particles on the solid surface plays an important role in altering the interfacial energy between a solid and liquid.
PH.D in Chemical Engineering, December 2013
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