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- SelectedWorks (2)
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- Oklahoma Research Day Abstracts (18)
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Articles 31 - 58 of 58
Full-Text Articles in Physics
Art Or Science?, Allison Marsh
Art Or Science?, Allison Marsh
Section 3: Imaging the Fast Moving
No abstract provided.
Inducing A Dielectric Barrier Discharge Plasma Within A Package, Vladimir Milosavljevic
Inducing A Dielectric Barrier Discharge Plasma Within A Package, Vladimir Milosavljevic
Vladimir Milosavljevic
Cold atmospheric plasma offers significant potential as a nonthermal decontamination tool for food and medical applications. We present results of a dielectric barrier discharge (DBD) plasma induced in a gas confined by a polymer package. The resultant discharge and contained afterglow are found to have a strong antimicrobial effect.
Inducing A Dielectric Barrier Discharge Plasma Within A Package, Vladimir Milosavljevic
Inducing A Dielectric Barrier Discharge Plasma Within A Package, Vladimir Milosavljevic
Vladimir Milosavljevic
Cold atmospheric plasma offers significant potential as a nonthermal decontamination tool for food and medical applications. We present results of a dielectric barrier discharge (DBD) plasma induced in a gas confined by a polymer package. The resultant discharge and contained afterglow are found to have a strong antimicrobial effect.
Enzyme Entrapment In Polyaniline Films Observed Via Florescence Anisotropy And Antiquenching, Louis R. Nemzer, Marissa Mccaffrey, Arthur J. Epstein
Enzyme Entrapment In Polyaniline Films Observed Via Florescence Anisotropy And Antiquenching, Louis R. Nemzer, Marissa Mccaffrey, Arthur J. Epstein
Louis R Nemzer
The facile entrapment of oxidoreductase enzymes within polyaniline polymer films by inducing hydrophobic collapse using phosphate buffered saline (PBS) has been shown to be a cost-effective method for fabricating organic biosensors. Here, we use fluorescence anisotropy measurements to verify enzyme immobilization and subsequent electron donation to the polymer matrix, both prerequisites for an effective biosensor. Specifically, we measure a three order of magnitude decrease in the ratio of the fluorescence to rotational lifetimes. In addition, the observed fluorescence antiquenching supports the previously proposed model that the polymer chain assumes a severely coiled conformation when exposed to PBS. These results help …
02. Animal Science, University Of Central Oklahoma
02. Animal Science, University Of Central Oklahoma
Oklahoma Research Day Abstracts
No abstract provided.
06. Computer Science, University Of Central Oklahoma
06. Computer Science, University Of Central Oklahoma
Oklahoma Research Day Abstracts
No abstract provided.
04. Botany, University Of Central Oklahoma
04. Botany, University Of Central Oklahoma
Oklahoma Research Day Abstracts
No abstract provided.
07. Criminal Justice, University Of Central Oklahoma
07. Criminal Justice, University Of Central Oklahoma
Oklahoma Research Day Abstracts
No abstract provided.
09. Environmental Science, University Of Central Oklahoma
09. Environmental Science, University Of Central Oklahoma
Oklahoma Research Day Abstracts
No abstract provided.
11. Genetics, University Of Central Oklahoma
11. Genetics, University Of Central Oklahoma
Oklahoma Research Day Abstracts
No abstract provided.
12. Kinesiology, University Of Central Oklahoma
12. Kinesiology, University Of Central Oklahoma
Oklahoma Research Day Abstracts
No abstract provided.
08. Engineering, University Of Central Oklahoma
08. Engineering, University Of Central Oklahoma
Oklahoma Research Day Abstracts
No abstract provided.
10. Forensic Science, University Of Central Oklahoma
10. Forensic Science, University Of Central Oklahoma
Oklahoma Research Day Abstracts
No abstract provided.
05. Chemistry, University Of Central Oklahoma
05. Chemistry, University Of Central Oklahoma
Oklahoma Research Day Abstracts
No abstract provided.
14. Optometry, University Of Central Oklahoma
14. Optometry, University Of Central Oklahoma
Oklahoma Research Day Abstracts
No abstract provided.
15. Pharmacy, University Of Central Oklahoma
15. Pharmacy, University Of Central Oklahoma
Oklahoma Research Day Abstracts
No abstract provided.
18. Statistics, University Of Central Oklahoma
18. Statistics, University Of Central Oklahoma
Oklahoma Research Day Abstracts
No abstract provided.
17. Psychology, University Of Central Oklahoma
17. Psychology, University Of Central Oklahoma
Oklahoma Research Day Abstracts
No abstract provided.
19. Zoology, University Of Central Oklahoma
19. Zoology, University Of Central Oklahoma
Oklahoma Research Day Abstracts
No abstract provided.
03. Biology, University Of Central Oklahoma
03. Biology, University Of Central Oklahoma
Oklahoma Research Day Abstracts
No abstract provided.
13. Mathematics, University Of Central Oklahoma
13. Mathematics, University Of Central Oklahoma
Oklahoma Research Day Abstracts
No abstract provided.
16. Physics, University Of Central Oklahoma
16. Physics, University Of Central Oklahoma
Oklahoma Research Day Abstracts
No abstract provided.
An Unexpected Particle Oscillation For Electrophoresis In Viscoelastic Fluids Through A Microchannel Constriction, Xinyu Lu, Saurin Patel, Meng Zhang, Sang Woo Joo, Shizhi Qian, Amod Ogale, Xiangchun Xuan
An Unexpected Particle Oscillation For Electrophoresis In Viscoelastic Fluids Through A Microchannel Constriction, Xinyu Lu, Saurin Patel, Meng Zhang, Sang Woo Joo, Shizhi Qian, Amod Ogale, Xiangchun Xuan
Mechanical & Aerospace Engineering Faculty Publications
Electrophoresis plays an important role in many applications, which, however, has so far been extensively studied in Newtonian fluids only. This work presents the first experimental investigation of particle electrophoresis in viscoelastic polyethylene oxide (PEO) solutions through a microchannel constriction under pure DC electric fields. An oscillatory particle motion is observed in the constriction region, which is distinctly different from the particle behavior in a polymer-free Newtonian fluid. This stream-wise particle oscillation continues until a sufficient number of particles form a chain to pass through the constriction completely. It is speculated that such an unexpected particle oscillating phenomenon is a …
Microfluidic Electrical Sorting Of Particles Based On Shape In A Spiral Microchannel, John Dubose, Xinyu Lu, Saurin Patel, Shizhi Qian, Sang Woo Joo
Microfluidic Electrical Sorting Of Particles Based On Shape In A Spiral Microchannel, John Dubose, Xinyu Lu, Saurin Patel, Shizhi Qian, Sang Woo Joo
Mechanical & Aerospace Engineering Faculty Publications
Shape is an intrinsic marker of cell cycle, an important factor for identifying a bioparticle, and also a useful indicator of cell state for disease diagnostics. Therefore, shape can be a specific marker in label-free particle and cell separation for various chemical and biological applications. We demonstrate in this work a continuous-flow electrical sorting of spherical and peanut-shaped particles of similar volumes in an asymmetric double-spiral microchannel. It exploits curvature-induced dielectrophoresis to focus particles to a tight stream in the first spiral without any sheath flow and subsequently displace them to shape-dependent flow paths in the second spiral without any …
Vibrational Spectroscopy: Disease Diagnostics And Beyond, Hugh Byrne, Kamila Ostrowska, Haq Nawaz, Jennifer Dorney, Aidan Meade, Franck Bonnier, Fiona Lyng
Vibrational Spectroscopy: Disease Diagnostics And Beyond, Hugh Byrne, Kamila Ostrowska, Haq Nawaz, Jennifer Dorney, Aidan Meade, Franck Bonnier, Fiona Lyng
Books/Book Chapters
Summary
This chapter outlines some developments in the applications of vibrational spectroscopy for disease diagnostics and demonstrates how the applications of the spectroscopic techniques can be extended to the analysis and evaluation of disease aetiology and the mechanisms of interaction and the cellular and subcellular responses to, for example chemotherapeutic agents and nanoparticles. The primary emphasis is on Raman spectroscopy, although some examples are based on infrared absorption spectroscopy. The studies presented are chosen to illustrate how a range of multivariate analytical techniques can be employed to maximize the potential benefits of the complex spectral information obtained from tissue or …
Two-Photon Microscopy For Biomedical Studies, Yassel Acosta
Two-Photon Microscopy For Biomedical Studies, Yassel Acosta
Open Access Theses & Dissertations
Fluorescence optical microscopy is one of the most important tools to investigate biological samples and to observe structures in living cells. Based on the principle of the simultaneous absorption of two-photons and subsequent emission of fluorescent light we have developed a Two-Photon Laser Scanning Fluorescence Microscope that allow us to perform optical sectioning and three-dimensional reconstructions of structures in biological samples such as dopaminergic clusters of neurons and tracheal branches in Drosophila brain. The spatial confinement of the excitation light to the focal plane combined with the temporal compression of photons into short packets during femtosecond pulses make our system …
Concern-Driven Integrated Toxicity Testing Strategies For Nanomaterials - Report Of The Nanosafety Cluster Working Group 10, Hugh Byrne, Agnes G. Oomen, Peter M.J. Bos, Teresa F. Fernandes, Kerstin Hund-Rinke, Diana Boraschi, Karin Aschberger, Stefania Gottardo, Frank Von Der Kammer, Dana Kühnel, Danail Hristozov, Antonio Marcomini, Lucia Migliore
Concern-Driven Integrated Toxicity Testing Strategies For Nanomaterials - Report Of The Nanosafety Cluster Working Group 10, Hugh Byrne, Agnes G. Oomen, Peter M.J. Bos, Teresa F. Fernandes, Kerstin Hund-Rinke, Diana Boraschi, Karin Aschberger, Stefania Gottardo, Frank Von Der Kammer, Dana Kühnel, Danail Hristozov, Antonio Marcomini, Lucia Migliore
Articles
Bringing together topic-related European Union-(EU)-funded projects, the so-called “NanoSafety Cluster” aims at identifying key areas for further research on risk assessment procedures for nanomaterials (NM). The outcome of NanoSafety Cluster Working Group 10, this commentary presents a vision for concern-driven integrated approaches for the (eco-)toxicological testing and assessment (IATA) of NM. Such approaches should start out by determining concerns, i.e. specific information needs for a given NM based on realistic exposure scenarios. Recognized concerns can be addressed in a set of tiers using standardized protocols for NM preparation and testing. Tier 1 includes determining physico-chemical properties, non-testing (e.g. structure …
Probing Secondary And Tertiary Rna Folding Using Force And Temperature, William Stephenson
Probing Secondary And Tertiary Rna Folding Using Force And Temperature, William Stephenson
Legacy Theses & Dissertations (2009 - 2024)
RNA folding is the process whereby a single stranded RNA molecule assumes its three-dimensional functional conformation. Along with the protein folding problem, the RNA folding problem remains as one of the great unsolved problems in biophysics. Generally RNA folding occurs in a hierarchical manner whereby the sequence of an RNA (primary structure) determines which regions will form helical segments (secondary structure) before further rearrangement and base pairing of secondary structure motifs (tertiary structure). Due to the intimate connection between structure and function within molecular biology, increased familiarity with the thermodynamic and kinetic factors that govern RNA folding will permit the …