Index Catalog // ScholarsArchive@OSU

Environmental durability of reinforced concrete deck girders strengthened with surface-bonded carbon fiber-reinforced polymer

Creator:: Sopal, Gautam Jayant
Abstract:: Long-term durability of surface-bonded carbon fiber-reinforced polymer (CFRP) for shear strengthening of reinforced concrete (RC) bridge members remains uncertain due to the limited field experience with these materials. This paper provides experimental results from the testing of full-scale RC bridge girder specimens after exposure to prolonged environmental exposure and combined...
Resource Type:: Masters Thesis
Full Text:: THESIS OF Gautam Jayant Sopal for the degree of Master of Science in Civil Engineering presented on

Polymeric submicron optical ion-selective sensors

Creator:: Bychkova, Valeriya
Abstract:: Ion-selective polymeric optical sensors – ion optodes – are a promising alternative to ion-selective electrodes and fluorescent dyes for analytical and biological applications, e.g. extra- and intracellular measurements. They are non-toxic, highly selective robust probes for ionic fluxes monitoring. A large-scale fabrication of ion optodes using a solvent displacement method...
Resource Type:: Dissertation
Full Text:: Submicron Optical Ion-Selective Sensors. Abstract approved: James D. Ingle, Jr. Ion

Design, characterization, and application of spectrometers for determination of low-level dissolved oxygen with small-volume sampling methodology

Creator:: Cakin, Defne
Abstract:: New analytical methods and instrumentation were developed for the determination of dissolved oxygen (DO) at low concentrations in water. The methods were based on monitoring the absorbance increase due to the oxidation of reduced indigo carmine (IC) by oxygen in the sample in different types of spectrometer cells. Spectrophotometer cells...
Resource Type:: Dissertation
Full Text:: : ___________________________________________ James D. Ingle, Jr. New analytical methods and instrumentation were developed for the

Micro total analysis system for in-situ and autonomous spectrophotometric monitoring of iron in groundwater

Creator:: Koch, Corey R.
Abstract:: We have developed a compact micro total analysis system (μTAS) to serve as a platform for in-situ spectrophotometric water quality monitoring. Individual fluidic, optical, and electrical components were designed, developed, and characterized. These components were combined in both an integrated (single lithographic “chip-based” platform) and a modular manner. The microfluidic...
Resource Type:: Dissertation
Full Text:: Groundwater Abstract approved: Vincent T. Remcho

Synthesis and characterization of novel stationary phases for small scale liquid chromatographic separations of proteins and nanoparticles

Creator:: Hutanu, Daniela
Abstract:: The emerging field of nanotechnology strictly requires the micro-scaling of the available separation technology and the design of novel devices for separations of molecules of interest. The separation of proteins and nanoparticles is challenging due to their relatively large size, non-specific adherence to surfaces and instability in many solvents. This...
Resource Type:: Dissertation
Full Text:: approved: Vincent T. Remcho The emerging field of nanotechnology strictly requires the micro

Monolithic sorbents for microscale separations

Creator:: Doneanu, Angela
Abstract:: Over the last decade, the miniaturization of analytical systems has become an increasingly important and interesting research area. Miniaturized systems offer many advantages, including reduced reagent and sample consumption, shorter analysis times, portability and disposability. This dissertation describes novel approaches in this direction, focusing on two areas: the miniaturization of...
Resource Type:: Dissertation
Full Text:: Ingle, Dr. Michael Lerner, Dr. Claudia Maier and Dr. Gregory Rorrer for offering the academic guidance

From electrophoresis to dielectrophoresis: designing, fabricating, and evaluating an electroformed ratchet type microfluidic dielectrophoresis device

Creator:: Gonzalez, Carlos F.
Abstract:: Dielectrophoresis (DEP) is a separation method in which a non-uniform electric field is used to induce a dipole moment in a suspended particle. If the polarization of the particle is greater than that of the suspending medium, the particle will move towards the region of higher field strength (positive DEP);...
Resource Type:: Dissertation
Full Text:: : Vincent T. Remcho Dielectrophoresis (DEP) is a separation method in which a non-uniform electric

Monitoring redox conditions with redox indicators during microbial reductive dechlorination in microcosms and bioaugmented columns

Creator:: Ruiz-Haas, Peter A.
Abstract:: New methods, sensors, and devices based on redox indicators were developed to monitor redox conditions in anoxic and anaerobic laboratory systems and the subsurface environment. The primary application was monitoring redox conditions during the dechlorination of tetrachioroethene (PCE) to ethene (ETH) in packed columns and microcosm bottles containing an enriched...
Resource Type:: Dissertation
Full Text:: Columns. Abstract approved: James D. Ingle, Jr. New methods, sensors, and devices based on redox

Design, fabrication and application of a microfluidic nanofiltration module for separation and purification of macromolecules and nanoparticles

Creator:: Rundel, Jack T.
Abstract:: A microfluidic nanofiltration module has been designed, fabricated and applied to the continuous-flow, pressure-driven, post-synthetic purification of macromolecules and nanoparticles via diafiltration using a commercially available organic solvent resistant nanofiltration membrane, STARMEM 122. This module will readily interface with other microscale components within a "nanofactory" for the rapid synthesis, purification...
Resource Type:: Dissertation
Full Text:: ABSTRACT OF THE DISSERTATION OF Jack T. Rundel for the degree of Doctor of Philosophy in Chemistry

Exploring a fluorescence-based analytical method for Ba in natural waters and a field study of the major ion chemistry of Lake Issyk-Kul, Kyrgyzstan

Creator:: Qiu, Xuemei
Abstract:: Two separate research projects are described here. One involves development of a new analytical method for determination of Ba in seawater and other natural waters. The other is a collaborative field study of the chemistry of Lake Issyk-Kul, Kyrgyzstan. The method project explored an ion chromatography-fluorescence detection bench-top approach for...
Resource Type:: Masters Thesis
Full Text:: to my thesis committee, Dr. Bob Collier, Dr. James Ingle and Dr. Richard Daniels, for their

ScholarsArchive@OSU

Environmental durability of reinforced concrete deck girders strengthened with surface-bonded carbon fiber-reinforced polymer

Polymeric submicron optical ion-selective sensors

Design, characterization, and application of spectrometers for determination of low-level dissolved oxygen with small-volume sampling methodology

Micro total analysis system for in-situ and autonomous spectrophotometric monitoring of iron in groundwater

Synthesis and characterization of novel stationary phases for small scale liquid chromatographic separations of proteins and nanoparticles

Monolithic sorbents for microscale separations

From electrophoresis to dielectrophoresis: designing, fabricating, and evaluating an electroformed ratchet type microfluidic dielectrophoresis device

Monitoring redox conditions with redox indicators during microbial reductive dechlorination in microcosms and bioaugmented columns

Design, fabrication and application of a microfluidic nanofiltration module for separation and purification of macromolecules and nanoparticles

Exploring a fluorescence-based analytical method for Ba in natural waters and a field study of the major ion chemistry of Lake Issyk-Kul, Kyrgyzstan

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