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Articles 11191 - 11220 of 15552
Full-Text Articles in Entire DC Network
Analysis Of Bisphenol A (Bpa) In Local Waters And In Pvc Pond Liner, Brandon Bills
Analysis Of Bisphenol A (Bpa) In Local Waters And In Pvc Pond Liner, Brandon Bills
Undergraduate Honors Theses
Concentrations of the endocrine disrupter bisphenol A (BPA) were determined for three water samples from the watershed of Charleston, IL, USA. The analytical approach employed solid phase extraction in conjunction with GC/MS-SIM analysis and yielded a limit of detection of 30 ppt (parts per trillion). The local waterways Town Branch. Cassel Creek and Embarras River showed concentrations of 58(11) ppt, 89(3) ppt, and 32(9) ppt respectively. Additional measurements of BPA availability from aqueous laboratory extractions of a commercial PVC pond liner have been initiated. Preliminary results indicate significant BPA release from the pond liner, dependent upon extraction conditions.
Nitric Oxide Synthase Encapsulation In Liposomes: A Potential Delivery Platform To (Nitric Oxide)-Deficient Targets, Reshani H. Perera, Pubudu M. Peiris, Serban F. Peteu, Mekki Bayachou
Nitric Oxide Synthase Encapsulation In Liposomes: A Potential Delivery Platform To (Nitric Oxide)-Deficient Targets, Reshani H. Perera, Pubudu M. Peiris, Serban F. Peteu, Mekki Bayachou
Chemistry Faculty Publications
Nitric oxide (NO) is a freely diffusible, gaseous free radical, associated with many physiological and pathological processes: such as neuronal signaling, immune response and inflammatory response. In mammalian organisms, NO is produced from L-arginine in an NADPH-dependent reaction catalyzed by a family of nitric oxide synthase (NOS) enzymes. Typically, large NO fluctuations in biological systems under/over a critical limit is associated with problems that range from transient dysfunctions to severe chronic disease states. In this regard, we explore the development of a potential delivery and release method of nitric oxide to NO-deficient sites using liposomes as vehicles. Liposomes have already …
Characterisation Of Crataegus Monogyna Fractions And Assessment Of Their Functional Properties, Eilish Shortle
Characterisation Of Crataegus Monogyna Fractions And Assessment Of Their Functional Properties, Eilish Shortle
Theses
Hawthorn {Crataegus monogyna) is a herb that has been used medicinally since ancient times. In modern medicine it is known for its cardiotonic properties and is used as a cardiovascular protective, hypotensive and hypocholesterolemic agent. In recent years supercritical fluid extraction (SFE) has become more popular as an extraction method for botanical material as it is an environmentally-friendly method that can produce toxic-free extracts. The optimal SFE extraction conditions for the extraction of antioxidant compounds from both, hawthorn leaf & dower and hawthorn berries, using carbon dioxide, were determined in this study. The optimized extracts were then compared to pre-prepared …
Donor-Sigma-Acceptor (D-Sigma-A) Molecules With Perylenebisimide Acceptors Having Alkyl Or Peg Swallowtails With Sulfur Or Hydroxyl Anchors: Synthesis And Applications In Langmuir-Blodgett Films, Single Molecule Spectroscopy (Sms), G-Quadruplex Studies And Passivation Of Gold Nanoparticles, Rajesh Kota
Electronic Theses and Dissertations
Use of single molecules as electronic devices is presently considered a potential alternative to semiconductor-based nanoscale electronics. The ability to study a single molecule or a small group of molecules provides a great opportunity to build electronic devices at the molecular level. It is vital to understand the parameters that control the device properties such as molecular structure, conformation and arrangement at the surface. Ari Aviram and Mark A. Ratner proposed the construction of a single organic molecule as an organic rectifier. Donor-Sigma-Acceptor (D-?-A ) molecules, when arranged with a proper orientation as Langmuir-Blodgett (LB) films and fixed between two …
Acetylcholine Esterase Activity And Muscle Contraction In The Sea Urchin Lytechinus Variegatus (Lamarck) Following Chronic Phosphate Exposure, S. Anne Boettger, James B. Mcclintock
Acetylcholine Esterase Activity And Muscle Contraction In The Sea Urchin Lytechinus Variegatus (Lamarck) Following Chronic Phosphate Exposure, S. Anne Boettger, James B. Mcclintock
Biology Faculty Publications
No abstract provided.
Iron Molybdenum Cofactor: Catalyst In Dihydrogen Production And Nifen's Role In The Femo-Co Biosynthetic Pathway, Deborah Bolin Maxwell
Iron Molybdenum Cofactor: Catalyst In Dihydrogen Production And Nifen's Role In The Femo-Co Biosynthetic Pathway, Deborah Bolin Maxwell
Electronic Theses and Dissertations
Humankind’s tremendous industrial and technological progress over the last two centuries has been driven by the natural abundance and availability of fossil fuels. As those reserves deplete, the prudent course of action would be to develop other readily available fuel sources. Some research efforts using biomolecules involve the hydrogenases and nitrogenases with the goal of evolving dihydrogen. At the nitrogenase active site, the iron-molybdenum cofactor (FeMo-co) catalyzes the reduction of dinitrogen and protons to form ammonia and dihydrogen. Toward the goal of producing dihydrogen passively as an alternative fuel, a novel advanced material has been developed. CdSe nanoparticles complexed with …
An Exhibit Wordle, Allison Marsh
A Crossword Puzzle For Kids, Allison Marsh
Word Find, Allison Marsh
Images From The Exhibit, Page 1, Allison Marsh
Lesson Plans, Activities, And Further Reading, Allison Marsh
Lesson Plans, Activities, And Further Reading, Allison Marsh
Handouts
No abstract provided.
Usc Image Center, Allison Marsh
Powers Of Ten, Allison Marsh
Imaging In 3-D, Allison Marsh
Questioning Images, Allison Marsh
How Small Is Small?, Allison Marsh
Why Do We Collect?, Allison Marsh
Why Do We Collect?, Allison Marsh
Section 2: Imaging the Microscopic
No abstract provided.
Spotlight On Usc: A.C. Moore Herbarium, Allison Marsh
Spotlight On Usc: A.C. Moore Herbarium, Allison Marsh
Section 2: Imaging the Microscopic
No abstract provided.
Imaging And Aesthetics, Allison Marsh
Imaging And Aesthetics, Allison Marsh
Section 2: Imaging the Microscopic
No abstract provided.
Observing The Minuscule, Allison Marsh
Observing The Minuscule, Allison Marsh
Section 2: Imaging the Microscopic
No abstract provided.
Listen, Allison Marsh
Spotlight On Usc: Mechanical Engineering, Allison Marsh
Spotlight On Usc: Mechanical Engineering, Allison Marsh
Section 3: Imaging the Fast Moving
No abstract provided.
Photographic Evidence, Allison Marsh
Photographic Evidence, Allison Marsh
Section 3: Imaging the Fast Moving
No abstract provided.
Influencing Art, Allison Marsh
Influencing Art, Allison Marsh
Section 3: Imaging the Fast Moving
No abstract provided.
Department Of Chemistry News, Spring 2012, Illinois State University, Department Of Chemistry
Department Of Chemistry News, Spring 2012, Illinois State University, Department Of Chemistry
Chem Letter
Newsletter of the Illinois State University Department of Chemistry
Investigation Of Polyurea-Crosslinked Silica Aerogels As A Neuronal Scaffold: A Pilot Study, Firouzeh Sabri, Judith A. Cole, M. Cody Scarbrough, Nicholas Leventis
Investigation Of Polyurea-Crosslinked Silica Aerogels As A Neuronal Scaffold: A Pilot Study, Firouzeh Sabri, Judith A. Cole, M. Cody Scarbrough, Nicholas Leventis
Chemistry Faculty Research & Creative Works
Background: Polymer crosslinked aerogels are an attractive class of materials for future implant applications particularly as a biomaterial for the support of nerve growth. The low density and nano-porous structure of this material combined with large surface area, high mechanical strength, and tunable surface properties, make aerogels materials with a high potential in aiding repair of injuries of the peripheral nervous system. However, the interaction of neurons with aerogels remains to be investigated. Methodology: In this work the attachment and growth of neurons on clear polyurea crosslinked silica aerogels (PCSA) coated with: poly-L-lysine, basement membrane extract (BME), and laminin1 was …
Noncanonical Reactions Of Flavoenzymes, Pablo Sobrado
Noncanonical Reactions Of Flavoenzymes, Pablo Sobrado
Chemistry Faculty Research & Creative Works
Enzymes containing flavin cofactors are predominantly involved in redox reactions in numerous cellular processes where the protein environment modulates the chemical reactivity of the flavin to either transfer one or two electrons. Some flavoenzymes catalyze reactions with no net redox change. In these reactions, the protein environment modulates the reactivity of the flavin to perform novel chemistries. Recent mechanistic and structural data supporting novel flavin functionalities in reactions catalyzed by chorismate synthase, type II isopentenyl diphosphate isomerase, UDP-galactopyranose mutase, and alkyl-dihydroxyacetone phosphate synthase are presented in this review. In these enzymes, the flavin plays either a direct role in acid/base …
Table Of Contents
Journal of the South Carolina Academy of Science
No abstract provided.
Scas Officers And Council Members 2011 - 2012
Scas Officers And Council Members 2011 - 2012
Journal of the South Carolina Academy of Science
No abstract provided.
Structural Properties Of Thermoresponsive Poly(N-Isopropylacrylamide)-Poly(Ethyleneglycol) Microgels, J. Clara-Rahola, A. Fernandez-Nieves, B. Sierra-Martin, A. B. South, L. Andrew Lyon, J. Kohlbrecher, A. F. Barbero
Structural Properties Of Thermoresponsive Poly(N-Isopropylacrylamide)-Poly(Ethyleneglycol) Microgels, J. Clara-Rahola, A. Fernandez-Nieves, B. Sierra-Martin, A. B. South, L. Andrew Lyon, J. Kohlbrecher, A. F. Barbero
Biology, Chemistry, and Environmental Sciences Faculty Articles and Research
The application of RNA interference to treat disease is an important yet challenging concept in modern medicine. In particular, small interfering RNA (siRNA) have shown tremendous promise in the treatment of cancer. However, siRNA show poor pharmacological properties, which presents a major hurdle for effective disease treatment especially through intravenous delivery routes. In response to these shortcomings, a variety of nanoparticle carriers have emerged, which are designed to encapsulate, protect, and transport siRNA into diseased cells. To be effective as carrier vehicles, nanoparticles must overcome a series of biological hurdles throughout the course of delivery. As a result, one promising …