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Chemistry and Biochemistry

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SCURC_2011_Booklet.pdfTalk_Physi_MontenegroTalk_Theor_SilversTalk_Physi_AndersonTalk_Mater_JonesTalk_Mater_MoffittTalk_Mater_DaragoTalk_Mater_HernandezTalk_Bioch_YouchkovetsTalk_Bioch_JindalTalk_Mater_BahrTalk_Bioch_KhumsupanTalk_Bioch_KinnebrewTalk_Bioch_TranTalk_Organ_RivasTalk_Organ_JacksonTalk_Organ_YoungTalk_Bioch_BajajTalk_Envir_MagnaboscoBinder2.pdfSCURC_2011_Booklet.pdfPoster_Analy_JoffePoster_Analy_PaigePoster_Analy_PearlstonePoster_Bioch_AyePoster_Bioch_ChengPoster_Bioch_CosgrovePoster_Bioch_FeherPoster_Bioch_HoffmanPoster_Bioch_HuynhPoster_Bioch_LawrencePoster_Bioch_LongPoster_Bioch_LongobardoPoster_Bioch_McSpaddenPoster_Bioch_MillerPoster_Bioch_RoyerPoster_Bioch_TiongsonPoster_Bioch_VanFossenPoster_Bioch_WiafePoster_Mater_CollinsPoster_Mater_GardnerPoster_Mater_NgoPoster_Mater_SelbyPoster_Organ_Candee2Poster_Organ_KoenkaPoster_Organ_KuoPoster_Organ_MedinaPoster_Organ_NgoPoster_Organ_TolentinoPoster_Organ_WaschakPoster_Physi_Candee1Poster_Physi_HagenPoster_Physi_WijesuriyaSouthern California Undergraduate Research Conference in Chemistry and Biochemistry Conference Proceedings UC Santa Barbara April 23, 2011Conference Schedule 9:00 AM Conference Opens: ESB 1001 9:00 – 9:30 AM Welcome Statements Kalju Kahn, UC Santa Barbara David Mann, CEO of Vascular Biosciences 9:30 – 11:45 AM Talks, first session 9:40 AM Anthony Montenegro, CSU Fullerton Kinetics Study of Reaction of Pinenes with Hydroxyl Radical at 1–8 Torr and 240-340 K Using the Relative Rate/Discharge Flow/Mass Spectrometry Method 10:00 AM Crisand Anderson, Chapman University Electron Shuttling by Humic Substances in Wetland Soils: Exploring a Novel Control on Anaerobic Decomposition 10:20 AM Stephanie Moffitt, UC Santa Barbara The Synthesis of an Exchange Bias Material Through Solid State Mixtures of Co and YFeO3 Coffee Beak 11:00 AM Lucy Darago, UC Santa Barbara Ca2-xEuxMgSi2O7: Development of New Yellow Phosphors for Solid-State White Lighting 11:20 AM Daniel Hernandez, CSU Long Beach Synthesis and Characterization of Titanium Dioxide Composites with Applications in Dye-Sensitized Solar Cells 11:40 AM Ludmila Youchkovets, Mount St. Mary’s College Induced Monitoring–Flash–Quench-Induced Oxidative Damage to Guanine via HPLC: Dependence on Quencher 12:00 PM Granton Jindal, Caltech Using the H-tag to Standardize Purification of Azide-labeled Proteins 12:20 – 1:00 PM Lunch Break and Poster Setup1:00 – 2:40 PM Talks, second session 1:00 PM Daniel Bahr, CSU Long Beach Chemical and Mechanical Analysis of Green Composites Made from Natural Fibers of Hemp, Flax and Hay 1:20 PM Darin Khumsupan, CSU Long Beach Reconstituted High Density Lipoprotein: a Nanovehicle to Transport and Delivery of the Antioxidant Piperine 1:40 PM Maia Kinnebrew, UC Santa Barbara Magnetic Resonance Spectroscopy Probes the Structural Assembly of a Solar Powered Membrane Protein 2:00 PM Tuyen Tran, CSU Long Beach Acrolein, a Tobacco Smoke Component Impairs Function of Apolipoprotein E, an Anti-atherogenic Protein 2: 20 PM Bianca M. Rivas, CSU Northridge Diastereoselectivety of Radical Carbon–Carbon Bond Formation in Napthalene-Stabilized Propargyl Cations 2:40 – 3:40 PM Poster Session 3:40 – 4:00 PM Talks, third session 3:40 PM Megan Jackson, Caltech Electrocatalytic Carbon–Halogen Bond Formation Using Halide Ions 4:00 PM Amanda Young, Vanguard University Mechanism of Didebromination by Zinc in Styrenedibromides 4:20 PM Alex Bajaj, UC Los Angeles Cloning, Expression, Purification and Crystallization of Rv2224c, a Putative Carboxylesterase, from Mycobacterium tuberculosis 4:40 PM Cara Magnabosco, University of Southern California A Characterization of the Biology and Nutrient Cycling of Two Glacial Lakes in Isfjord Radio, Svalbard 5:00 PM Conference ClosesKinetics Study of Reaction of Pinenes with Hydroxyl Radical at 1–8 Torr and 240-340 K Using the Relative Rate/Discharge Flow/Mass Spectrometry Method Anthony Montenegro, Jacob S.A. Ishibashi, Phuong Lam, Zhuangjie Li Department of Chemistry and Biochemistry, California State University Fullerton, Fullerton, CA 92834 Dr. Zhuangjie Li, Associate Professor Abstract A kinetic study was conducted on the reactions of α- and β-pinene with hydroxyl radicals at 1-8 torr and from 240K-340K using the relative rate/discharge flow/mass spectrometry (RR/DF/MS) technique to facilitate a better understanding of the role of pinene in the air pollution system. With isoprene as the reference compound our kinetic results indicate that at 298 K the reaction of α- and β-pinene with hydroxyl radicals has little pressure dependence at 1-3 Torr and their rate constants were determined to be kα-pinene = (5.51±0.129)x10-11 cm3 molecule-1 s-1 and kβ-pinene = (8.03±0.133)x10-11 cm3 molecule-1 s-1 respectively, which are in good agreement with literature values within experimental uncertainty. At 240-340K the rate constant was found to negatively depend on temperature. The Arrhenius equation for α-pinene and β-pinene with hydroxyl radical was determined to be kα-pinene = (1.34±0.22)x10-11exp[(420±46)/T] cm3 molecule-1 s-1 and kβ-pinene = (1.65±0.10)x10-11exp[(470±17)/T] cm3 molecule-1 s-1, respectively. Using the rate constant determined at 277 K in this work and the average global hydroxyl radical concentration, the lifetime of α- and β-pinene was estimated to be 5.8 hours and 4.7 hours, respectively. TALKSElectron shuttling by humic substances in wetland soils: exploring a novel control on anaerobic decomposition Crisand Anderson, Chapman University Jason K. Keller, Chapman University Peatlands store one-third of the earth’s soil carbon and are responsible for almost 10% of the global methane flux. Despite their importance in the global carbon cycle, much of the decomposition in these wetland ecosystems cannot be explained by any known microbial process. Additionally, methane production is suppressed for extended periods by an unknown mechanism in many peat soils. We explored the potential for humic substances to act as organic electron acceptors (thereby suppressing methane production) in peatland soils. Humic reduction was quantified by comparing the electron shuttling capacities of oxidized peat soil and peat soil that was chemically reduced with H2 and a Pd catalyst. Measurements of electron shuttling capacities were compared to the rates of methane and carbon dioxide


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