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Articles 1 - 30 of 86
Full-Text Articles in Physical Sciences and Mathematics
Development Of A Solid-Supported Glaser-Hay Reaction And Utilization In Conjunction With Unnatural Amino Acids, Jessica S. Lampkowski
Development Of A Solid-Supported Glaser-Hay Reaction And Utilization In Conjunction With Unnatural Amino Acids, Jessica S. Lampkowski
Dissertations, Theses, and Masters Projects
No abstract provided.
Studies Of Molecular Dynamics Of Fmoc Amino Acids Using Solid State Deuteron Nuclear Magnetic Resonance Spectroscopy, Wei Xu
Dissertations, Theses, and Masters Projects
The purpose of devising and validating models for intramolecular motions for FMOC amino acids is to quantify side chain motion in proteins which plays an important role in understanding biological structure function relations of proteins. In this thesis, spin lattice relaxation times (Ti) of FMOC amino acids were m easured under both static and magic angle spinning (MAS) condition at variable tem peratures. Lower activation energies of the relaxation times than the normal amino acids observed indicate a less sterically crowded environment for the rotation methyl group. A three-site jump model for the methyl group w as developed to fit …
Determining The Efficacy Of The Extended Kinetic Method For Determination Of Thermochemical Properties Of Small, High-Entropy, Organic Molecules, Mary Grace Pisano
Determining The Efficacy Of The Extended Kinetic Method For Determination Of Thermochemical Properties Of Small, High-Entropy, Organic Molecules, Mary Grace Pisano
Dissertations, Theses, and Masters Projects
No abstract provided.
Development Of A Three Step Cascade Synthesis Of 2,4-Dihydro-1h-Benzo[F]Isochromenes, Shane E. Lewis
Development Of A Three Step Cascade Synthesis Of 2,4-Dihydro-1h-Benzo[F]Isochromenes, Shane E. Lewis
Dissertations, Theses, and Masters Projects
No abstract provided.
Amine- And Sulfide-Sensing Copper(I) Iodide Films And The Structure, Dynamics, And Photophysics In The Copper(I) Iodide-Tetrahydrothiophene System, Kylie Marie Henline
Amine- And Sulfide-Sensing Copper(I) Iodide Films And The Structure, Dynamics, And Photophysics In The Copper(I) Iodide-Tetrahydrothiophene System, Kylie Marie Henline
Dissertations, Theses, and Masters Projects
No abstract provided.
The Synthesis Of 2-Pyridones And Louisianin B, Kaila Ashley Margrey
The Synthesis Of 2-Pyridones And Louisianin B, Kaila Ashley Margrey
Dissertations, Theses, and Masters Projects
No abstract provided.
Total Synthesis Of (+)-Malbrancheamide B Utilizing A Stereoselective Domino Reaction Sequence To Establish The Bicyclo[2.2]Diazaoctane Core, Stephen William Laws
Total Synthesis Of (+)-Malbrancheamide B Utilizing A Stereoselective Domino Reaction Sequence To Establish The Bicyclo[2.2]Diazaoctane Core, Stephen William Laws
Dissertations, Theses, and Masters Projects
No abstract provided.
Effects Of Nucleophile Strength On Selectivity In Bibr3 Catalyzed Cyclic Ether Construction, Ajara A. Rahman
Effects Of Nucleophile Strength On Selectivity In Bibr3 Catalyzed Cyclic Ether Construction, Ajara A. Rahman
Dissertations, Theses, and Masters Projects
No abstract provided.
Fluorescence Quenching Of Ppv-So And Bodipy-Naphthalene Systems, Brooklynd Dawn Saar
Fluorescence Quenching Of Ppv-So And Bodipy-Naphthalene Systems, Brooklynd Dawn Saar
Dissertations, Theses, and Masters Projects
No abstract provided.
The Role Of Small Carboxylic Acids During Poly(Amide) 11 Hydrolysis, John-Andrew Samuel Hocker
The Role Of Small Carboxylic Acids During Poly(Amide) 11 Hydrolysis, John-Andrew Samuel Hocker
Dissertations, Theses, and Masters Projects
No abstract provided.
Luminescent Nitrogen And Sulfure Adducts Of Cui Disubstituted Piperazine Complexes, Jason P. Safko
Luminescent Nitrogen And Sulfure Adducts Of Cui Disubstituted Piperazine Complexes, Jason P. Safko
Dissertations, Theses, and Masters Projects
No abstract provided.
Production Of Cyclohexylene-Containing Diamines In Pursuit Of Novel Radiation Shielding Materials, Norah G. Bate
Production Of Cyclohexylene-Containing Diamines In Pursuit Of Novel Radiation Shielding Materials, Norah G. Bate
Dissertations, Theses, and Masters Projects
No abstract provided.
The Total Synthesis Of The Lolium Alkaloids, Michael Todd Hovey
The Total Synthesis Of The Lolium Alkaloids, Michael Todd Hovey
Dissertations, Theses, and Masters Projects
No abstract provided.
Interactions Between Macroalgae And The Sediment Microbial Community: Nutrient Cycling Within Shallow Coastal Bays, Amber Kay Hardison
Interactions Between Macroalgae And The Sediment Microbial Community: Nutrient Cycling Within Shallow Coastal Bays, Amber Kay Hardison
Dissertations, Theses, and Masters Projects
Ephemeral macroalgal blooms are considered a symptom of eutrophication in shallow coastal lagoons, but their influence on nutrient cycling dynamics in these systems is not fully understood. From 2006-2008, I conducted a series of experiments to determine the influence of living and senescent macroalgae on sediment carbon (C) and nitrogen (N) cycling in coastal lagoons along the Delmarva Peninsula, USA. In particular, I focused on how macroalgae affect the microbial community at the sediment-water interface of shallow subtidal sediments because this complex consortium of autotrophic (e.g. benthic microalgae, BMA) and heterotrophic (e.g. bacteria) organisms plays a critical role in nutrient …
Organotitanium-Aluminum Promoted Carbometalations Of Alkynols: Substituent Effects, Nikola A. Nikolic
Organotitanium-Aluminum Promoted Carbometalations Of Alkynols: Substituent Effects, Nikola A. Nikolic
Dissertations, Theses, and Masters Projects
No abstract provided.
Peroxynitrite Oxidation Of Aromatic Thiols: Characterization Of The Products Formed Through Oxidation Of Thionitrobenzoic Acid And Thionitropyridine By Peroxynitrite, Catherine Balchunas Mall
Peroxynitrite Oxidation Of Aromatic Thiols: Characterization Of The Products Formed Through Oxidation Of Thionitrobenzoic Acid And Thionitropyridine By Peroxynitrite, Catherine Balchunas Mall
Dissertations, Theses, and Masters Projects
No abstract provided.
Synthesis And Characterization Of Polyimide Residuum, Friable Balloons, Microspheres And Foams, Erik Saul Weiser
Synthesis And Characterization Of Polyimide Residuum, Friable Balloons, Microspheres And Foams, Erik Saul Weiser
Dissertations, Theses, and Masters Projects
In order to meet requirements of future NASA systems for advanced polymeric cellular materials, research was undertaken to develop the next generation of polyimide foams which could be utilized as a reusable structural insulation on future Reusable Launch Vehicle (RLV) Programs. This research activity focused on developing polyimide foam and foam structures which were made using monomeric solutions or salt solutions formed from the reaction of a dianhydride and diamine dissolved in a mixture of foaming agents and alkyl alcohols. This process produced a precursor solid residuum which could then be manufactured into foams, friable balloons and microspheres. Polyimide foams …
Synthetic And Mechanistic Studies Of Poly(Vinyl Chloride) And Some Other Chlorinated Polymers, Xianlong Ge
Synthetic And Mechanistic Studies Of Poly(Vinyl Chloride) And Some Other Chlorinated Polymers, Xianlong Ge
Dissertations, Theses, and Masters Projects
Unlike vinyl chloride, 1,2-dichloroethylene (DCE) experienced dimerization under free-radical conditions. Chain transfer to DCE by beta-Cl elimination was shown to be the major reason for its nonpolymerization.;During the chlorination of alkyl chlorides with molecular chlorine, the involvement of a bridged intermediate led to the formation of vicinal chlorides as the major products. The yields of geminal chlorides increased significantly in the presence of solvents that form complexes with chlorine atoms, but such solvents also decreased the reactivity of the chlorination. Thus the chlorination of poly(vinyl chloride) (PVC) in the presence of complexing solvents was not a useful method for the …
Characterization Of Cyclic And Linear Dipeptides, Christine Michelle Howard
Characterization Of Cyclic And Linear Dipeptides, Christine Michelle Howard
Dissertations, Theses, and Masters Projects
No abstract provided.
The Attempted Synthesis Of A Phenolphthalein-Capped Beta-Cyclodextrin, Susan Elizabeth Miller
The Attempted Synthesis Of A Phenolphthalein-Capped Beta-Cyclodextrin, Susan Elizabeth Miller
Dissertations, Theses, and Masters Projects
No abstract provided.
The Attempted Synthesis Of 4,4'-Bis(Dimethylamino)Azobenzene-3,3'-Disulfonylchloride As A Cap For Beta-Cyclodextrin, Katherine M. Ross
The Attempted Synthesis Of 4,4'-Bis(Dimethylamino)Azobenzene-3,3'-Disulfonylchloride As A Cap For Beta-Cyclodextrin, Katherine M. Ross
Dissertations, Theses, and Masters Projects
No abstract provided.
Selective Selenoxide Elimination On The Secondary Face Of Beta-Cyclodextrin, Ahmed M. Hafez
Selective Selenoxide Elimination On The Secondary Face Of Beta-Cyclodextrin, Ahmed M. Hafez
Dissertations, Theses, and Masters Projects
No abstract provided.
A Study Of 3-Tropylium-1,5-Hexadiene, Elise Noma Hattersley
A Study Of 3-Tropylium-1,5-Hexadiene, Elise Noma Hattersley
Dissertations, Theses, and Masters Projects
No abstract provided.
The Synthesis Of 6a,6b-Dideoxy-6 A,6b-(9,10-Dicyanoanthracenyl-2,3-Dimethylene)-Beta-Cyclodextrin, Jonathan D. Tan
The Synthesis Of 6a,6b-Dideoxy-6 A,6b-(9,10-Dicyanoanthracenyl-2,3-Dimethylene)-Beta-Cyclodextrin, Jonathan D. Tan
Dissertations, Theses, and Masters Projects
No abstract provided.
Microstructures Of Poly(Vinyl Acetate) Studied By Nuclear Magnetic Resonance Spectroscopy, Hongyang Yao
Microstructures Of Poly(Vinyl Acetate) Studied By Nuclear Magnetic Resonance Spectroscopy, Hongyang Yao
Dissertations, Theses, and Masters Projects
Carbon-13 NMR spectroscopy was used to investigate the microstructures of poly(vinyl acetate) prepared by solution polymerization in benzene. A series of aromatic compounds was synthesized in order to model the structures formed via chain transfer to solvent. The peaks near 126.5 and 128.5 ppm in the spectra of the polymer samples were assigned to a 1-phenyl-(2n + 1)-multi-acetoxyalkane (where n = 1, 2, 3, etc.) microstructure. The concentration of that structure obtained from NMR spectra was correlated with the concentration calculated from reported kinetic data.;Chain transfer to benzene was shown to occur by addition of the macroradical to benzene, followed …
The Synthesis Of Benzophenone-3,5-Diacid Chloride For The Double Capping Of Beta-Cyclodextrin, Clyde Wesley Eargle
The Synthesis Of Benzophenone-3,5-Diacid Chloride For The Double Capping Of Beta-Cyclodextrin, Clyde Wesley Eargle
Dissertations, Theses, and Masters Projects
No abstract provided.
Synthesis And Characterization Of Cyclic Arylene Ether Oligomers, David Lewis Eldridge
Synthesis And Characterization Of Cyclic Arylene Ether Oligomers, David Lewis Eldridge
Dissertations, Theses, and Masters Projects
No abstract provided.
The Preparation, Structure And Reactivity Of [([Eta]6-Arene)Mn(Co)3]+And [([Eta]5-Cydlohexadienyl Enone)Mn(Co)3] Complexes, John Derek Jackson
The Preparation, Structure And Reactivity Of [([Eta]6-Arene)Mn(Co)3]+And [([Eta]5-Cydlohexadienyl Enone)Mn(Co)3] Complexes, John Derek Jackson
Dissertations, Theses, and Masters Projects
No abstract provided.
Synthesis And Characterization Of Poly(Carborane-Sulfone), Beth Le Ogura
Synthesis And Characterization Of Poly(Carborane-Sulfone), Beth Le Ogura
Dissertations, Theses, and Masters Projects
No abstract provided.
Acid Dissociation Of Chloroguaiacols And Ph Dependent Sorption To Estuarine Sediments, Jennifer Lisa Gundersen
Acid Dissociation Of Chloroguaiacols And Ph Dependent Sorption To Estuarine Sediments, Jennifer Lisa Gundersen
Dissertations, Theses, and Masters Projects
Chloroguaiacols are common components of bleached kraft pulp mill effluent known to bioaccumulate in aquatic organisms, and sorb onto particulate material and sediments. Ionization properties of the chloroguaiacols must be known in order to explain their sorptive behavior in aquatic systems. to obtain this information, thermodynamic acid dissociation constants (p&K\sb{lcub}\rm a{rcub})& of guaiacol (o-methoxyphenol) and nine chloroguaiacols have been determined by spectrophotometric methods. These experimental p&K\sb{lcub}\rm a{rcub}& values have been compared with literature values, values predicted by the Hammett equation and predictions by quantum chemical calculations using MOPAC 6.0 with AM1 and MNDO Hamiltonian operators. Experimental and predicted acidities were …