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Relevant bibliographies by topics / Chemistry, Analytical. Chemistry, Biochemistry. Chemistry, Physical / Dissertations / Theses

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Dissertations / Theses on the topic 'Chemistry, Analytical. Chemistry, Biochemistry. Chemistry, Physical'

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Published: 4 June 2021

Last updated: 14 February 2022

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1

Aniagyei, Stella Emefa. "Studies of nanoparticles as probes for nucleation and biomolecular self-assembly." [Bloomington, Ind.] : Indiana University, 2009. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3386662.

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Thesis (Ph.D.)--Indiana University, Dept. of Chemistry, 2009.<br>Title from PDF t.p. (viewed on Jul 20, 2010). Source: Dissertation Abstracts International, Volume: 70-12, Section: B, page: 7527. Adviser: Bogdan Dragnea.

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2

Myung, Sunnie. "Developing ion mobility methods for studying structure and assembly of biomolecules." [Bloomington, Ind.] : Indiana University, 2006. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3238509.

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Thesis (Ph. D.)--Indiana University, Dept. of Chemistry, 2006.<br>"Title from dissertation home page (viewed July 16, 2007)." Source: Dissertation Abstracts International, Volume: 67-10, Section: B, page: 5718. Adviser: David E. Clemmer.

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3

Basom, Edward J. "Dynamics and Conformational Heterogeneity in Cytochrome P450s via Infrared Spectroscopy." Thesis, Indiana University, 2017. http://pqdtopen.proquest.com/#viewpdf?dispub=10604874.

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<p> Cytochrome P450s (P450s) are a superfamily of enzymes that catalyze oxidation of unactivated hydrocarbons. However, the means by which P450s control (1) regioselectivity of their activity and (2) specificity in their molecular recognition remain largely elusive. Toward investigation of the role of dynamics in the regioselectivity of the archetypal cytochrome P450cam (P450cam), two-dimensional infrared spectroscopy has been applied with heme-bound carbon monoxide (CO) as an infrared probe of the active site. The data support a model for P450cam regioselectivity in which binding of different

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Tullo, Erica Jane. "Thermochemistry of Amino Acids and Constrained Diamines." W&M ScholarWorks, 2012. https://scholarworks.wm.edu/etd/1539623596.

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The gas-phase proton affinities of several highly basic amino acids and diamines were determined using the extended kinetic method in an ESI-quadrupole ion trap instrument. The non-protein amino acid L-canavanine is structurally related to L-arginine with an oxygen substituted for the terminal methylene group of L-arginine and is highly toxic to humans. The proton affinity of L-arginine, a protein amino acid, was determined to be 1036 kJ mol -1, whereas the proton affinity of L-canavanine was determined to be 1005 kJ mol-1. Thus, substitution of an oxyguanidino group for the guanidine group in

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Yu, Zhonghua Walter. "Characterization of irreversible inhibition of proteases by mass spectroscopy." Scholarly Commons, 1995. https://scholarlycommons.pacific.edu/uop_etds/2805.

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Proteases are present in all living organisms and are involved in various biological processes. Inhibition of protease activities in disease-causing agents is one strategy for rational drug design. Characterization of the protease inhibition processes is essential for understanding the inhibition mechanisms and for developing efficient therapeutics. This work represents a major challenge in analytical biochemistry. In this study, a strategy based on mass spectrometry has been developed to characterize irreversible inhibition of proteases. Five proteases representing three of the four protease

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Yu, Haiqiang. "Determination of disulfide linkages in SEL 24K from salmon eggs and N-terminal and C-terminal sequencing of gp41 and gp37 from Xenopus laevis eggs with mass spectrometry." Scholarly Commons, 2006. https://scholarlycommons.pacific.edu/uop_etds/2718.

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The disulfide bond pattern in the galactose-specific lectin 24K from the egg jelly of the Chinook salmon Oncorhynchus tshawytscha was determined, and its previously reported amino acid sequence was confirmed by mass spectrometry. A combination of tryptic digestion, HPLC separation, and chemical, modifications was used to establish the location of seven disulfide bonds and one pair of free cysteines. After proteolysis, peptides containing one or two disulfide bonds were identified by reduction and mass spectral comparison. MALDI mass spectrometry was supported by chemical modification (iodoacet

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Smith, Debbie A. "Analytical Methods for Toxic Metals and Proteins and Synthesis of Perovskites." Youngstown State University / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=ysu1289923061.

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Zhang, Kangling. "Determination of acetylation and methylation sites of histones by mass spectrometry." Scholarly Commons, 2000. https://scholarlycommons.pacific.edu/uop_etds/2678.

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This dissertation describes the development of a rapid method for determining the acetylation and methylation sites of core histories (H2B, H2A, H3 and H4) that gives the relative abundance of the acetylation isoforms by a method superior to the traditional micro-chemical sequencing method. The method created in this dissertation emphasizes speed, sensitivity and general applicability to all sorts of histone acetylation (methylation) scenarios. In this study, mass spectrometry method was first used to identify histone acetylation and methylation sites. Although there are 15 possible acetylatio

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Errico, Mary J. "The Cyclodextrin-Perfluorinated Surfactant Host-Guest Complex: Fundamental Studies for Potential Environmental Remediation and Therapeutic Applications." FIU Digital Commons, 2018. https://digitalcommons.fiu.edu/etd/3758.

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Perfluoroalkyl substances (PFASs) are contaminants of emerging concern, and have been detected in drinking water, wildlife, humans, and the environment. Cyclodextrins (CDs), cyclic sugars composed of glucose monomers, are proposed as a potential remediation strategy. CDs can form host-guest complexes with hydrophobic molecules; this complexation could be capitalized on for PFAS removal and sequestration. These dissertation projects aim to study the fundamental host-guest interactions between a variety of PFASs and CDs for eventual applications in environmental and biological remediation. 1D an

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10

Archer, Jieutonne Jansen. "AN INVESTIGATION INTO THE VERSATILITY OF A TITANIUM:SAPPHIRE REGENERATIVE AMPLIFIER LASER SYSTEM FOR AMBIENT MASS SPECTROMETRY." Diss., Temple University Libraries, 2018. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/595840.

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Chemistry<br>Ph.D.<br>This dissertation details an investigation into the use of laser pulses from a titanium:sapphire regenerative amplifier laser system to vaporize analytes in ambient air for mass spectral analysis. The laser system was modified to operate in one of two distinct modes. In femtosecond (fs) mode the laser produced 2.5 mJ, ~60 fs laser pulses centered at 800 nm. In nanosecond (ns) mode the laser produced 2.4 mJ, ~10 ns laser pulses centered at 800 nm. Using appropriate optical components the laser pulse energy was attenuated to achieve pulses varying from 0.15 mJ to 2.0 mJ. La

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Verespy, Stephen S. III. "Probing Allosteric, Partial Inhibition of Thrombin Using Novel Anticoagulants." VCU Scholars Compass, 2016. http://scholarscompass.vcu.edu/etd/4431.

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Thrombin is the key protease that regulates hemostasis; the delicate balance between procoagulation and anticoagulation of blood. In clotting disorders, like deep vein thrombosis or pulmonary embolism, procoagulation is up-regulated, but propagation of clotting can be inhibited with drugs targeting the proteases involved, like thrombin. Such drugs however, have serious side effects (e.g., excessive bleeding) and some require monitoring during the course of treatment. The reason for these side effects is the mechanism by which the drugs’ act. The two major mechanisms are direct orthosteric and

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Ustriyana, Putu Ayu Ditta Sarita. "Natural and Synthetic Biomacromolecules in Biomineralization." University of Akron / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=akron1573830824042347.

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Pollum, Marvin. "Applying Fundamental Photochemistry to Drive Drug Development: The Photo-Dynamics and Reactions of Sulfur-Substituted Nucleic Acids." Case Western Reserve University School of Graduate Studies / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=case1481287737895585.

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Zhao, Liang. "Post-translational modifications of SEL24K from salmon eggs and ZPA from Xenopus laevis eggs." Scholarly Commons, 2011. https://scholarlycommons.pacific.edu/uop_etds/160.

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Post-translational modifications (PTMs) of proteins play significant roles in regulation of biological activities and signal transduction. Examining their diversity is critical for understanding the mechanisms of cellular regulations. Among the various techniques employed for identification of PTMs, mass spectrometry has become a more and more important tool for detecting and mapping these covalent modifications and quantifying their changes. The two projects described in this dissertation focus mainly on the method development for characterization of two major PTMs, disulfide bonds and glycos

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Oswal, Dhawal P. "Peroxisome proliferator-activated receptor alpha: Insight into the structure, function and energy homeostasis." Wright State University / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=wright1401279322.

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Ducay, Rey Nann Mark Abaque. "Direct Detection of Aggregates in Turbid Colloidal Suspensions." Miami University / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=miami1439434385.

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Tamae, Daniel. "CEdG -- a glycated DNA adduct linking altered metabolism and genetic instability." Thesis, City of Hope's Irell & Manella Grad. Sch. of Biomedical Sci, 2013. http://pqdtopen.proquest.com/#viewpdf?dispub=3596728.

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<p> This dissertation details original work focused on the DNA adduct N2-(1-carboxyethyl)-2'-deoxyguanosine (CEdG). This DNA adduct results from the spontaneous reaction of DNA with the endogenous and exogenous formed, carbohydrate-derived, reactive carbonyl species, methylglyoxal. Using <i>in vitro</i> steady state kinetics, we have shown that CEdG in template DNA leads to DNA miscoding effects when the model replicative polymerase, exonuclease-free Klenow fragment (KF-) is used. The development, validation and application of a novel stable isotope dilution, triple quadrupole mass spectrometr

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Turkewitsch, Petra. "The synthesis of fluorescent chemosensors responsive to cAMP and other nucleotides /." Thesis, McGill University, 1998. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=37551.

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The overall objective of this study was to develop a fluorescent chemosensor for cAMP by creating recognition sites for cAMP, that contain a fluorescent molecule, in a polymer matrix by molecular imprinting. Such a fluorescent molecularly imprinted polymer may, therefore, serve as both the recognition element and the measuring element for the fluorescent detection of cAMP in aqueous media.<br>Two new fluorescent molecules, known as 4-(p-dimethylaminostyryl)pyridinium salts or dyes, were synthesized as possible fluorescent components of a chemosensor. Upon excitation at 469 run, dye 1, trans-4-

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Carpenter, Alexis Anne. "The separation of lipoproteins and the determination of cholesterol in human serum /." Thesis, McGill University, 1991. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=74624.

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A flow-injection system is described which employs immobilized cholesterol esterase and cholesterol oxidase for the determination of total serum cholesterol. Hydrogen peroxide generated by the enzymatic reaction is measured directly at a home-made amperometric thin-layer flow-cell held at +600 mV vs Ag/AgCl. Serum samples are passed through an anion exchange resin to remove possible interferences prior to detection. The accuracy and precision of the system were evaluated with the use of certified reference materials for serum cholesterol and were found to conform to the recommended guidelines

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Trempe, Jean-François. "Measurement and interpretation of residual anisotropic interactions in biomelecular NMR." Thesis, McGill University, 2002. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=79148.

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Residual dipolar couplings have been introduced recently as a new type of experimental constraints in biomolecular structure determination by nuclear magnetic resonance (NMR). These interactions are obtained by imparting weak orientational ordering to a biomolecule in a dilute liquid crystal. This results in a partial cancellation of anisotropic interactions such as the chemical shift anisotropy (CSA), the quadrupolar coupling and the dipolar coupling. Because the alignment is weak, only strong interactions manifest. These measurements can be used to refine structure or to define folds

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Kim, Tae-Young. "Development of a hybrid tandem mass spectrometer for ultraviolet photodissociation of biomolecules." [Bloomington, Ind.] : Indiana University, 2009. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3386690.

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Thesis (Ph.D.)--Indiana University, Dept. of Chemistry, 2009.<br>Title from PDF t.p. (viewed on Jul 22, 2010). Source: Dissertation Abstracts International, Volume: 70-12, Section: B, page: 7531. Adviser: James P. Reilly.

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Starkey, Jason A. "Biochemical applications of microcolumn separation techniques." [Bloomington, Ind.] : Indiana University, 2007. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3278220.

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Thesis (Ph. D.)--Indiana University, Dept. of Chemistry, 2007.<br>Source: Dissertation Abstracts International, Volume: 68-09, Section: B, page: 5919. Adviser: Milos V. Novotny. Title from dissertation home page (viewed May 9, 2008).

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Sowell, Rena A. "Proteome measurements for developing hypotheses about the biology of Drosophila." [Bloomington, Ind.] : Indiana University, 2007. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3283100.

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Thesis (Ph. D.)--Indiana University, Dept. of Chemistry, 2007.<br>Source: Dissertation Abstracts International, Volume: 68-09, Section: B, page: 5918. Adviser: David E. Clemmer. Title from dissertation home page (viewed May 12, 2008).

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Lee, John Edwin 1965. "Molecular orientation distributions in adsorbed protein films." Diss., The University of Arizona, 1997. http://hdl.handle.net/10150/282448.

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Understanding and controlling protein adsorption is fundamentally important to the successful development of synthetic biomaterials and implantable chemical sensing devices. However, the study of protein adsorption, and in particular, orientation in protein thin films has been hampered by inadequate methods with which to study weakly absorbing thin protein films. In this work, Integrated Optical Waveguide-Attenuated Total Reflection Linear Dichroism (IOW-ATR LD) coupled with fluorescence emission anisotropy was used to study: (1) the orientation of Mb as a function of the adsorbent surface and

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Sikorsky, Alison A. "Concentration enhancement and device fabrication for the improved performance of gradient elution moving boundary electrophoresis." Thesis, University of Maryland, College Park, 2014. http://pqdtopen.proquest.com/#viewpdf?dispub=3644192.

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<p> Many recent efforts in the field of microfluidics have been focused on reducing the size and the complexity of devices and on simplifying the methods of analysis performed with them. Gradient elution moving boundary electrophoresis (GEMBE) is a recently described counterflow electrophoresis method that was developed to simplify the analysis of ions in complex matrices. In this thesis, the improvement of the limit of detection of GEMBE and reduction of the GEMBE channel length is investigated. </p><p> Integration of simple and robust device components required for the successful adaptatio

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Devakumar, ArugaDoss. "Applications of 157 nm light photofragmentation for the structural characterization of isomeric glycans and lipids." [Bloomington, Ind.] : Indiana University, 2008. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3319919.

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Thesis (Ph. D.)--Indiana University, Dept. of Chemistry, 2008.<br>Title from PDF t.p. (viewed May 13, 2009). Source: Dissertation Abstracts International, Volume: 69-08, Section: B, page: 4721. Adviser: James P. Reilly.

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Dasari, Anvesh. "Using Nucleotide Analogs as Biochemical Probes to Evaluate the Mechanisms Involved in Translesion Replication by a High Fidelity DNA Polymerase." Cleveland State University / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=csu1504869235809659.

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Li, Huawen. "Quantitative Analysis of Bleomycin in Rat Plasma by LC-MS/MS." Cleveland State University / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=csu1528851820162444.

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Muro, Claire K. "Further Development of Raman Spectroscopy for Body Fluid Investigation| Forensic Identification, Limit of Detection, and Donor Characterization." Thesis, State University of New York at Albany, 2017. http://pqdtopen.proquest.com/#viewpdf?dispub=10275358.

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<p> The challenges to forensic body fluid analysis have placed limitations on the type of information that investigators can acquire and how that information can be collected. In recent years, Raman spectroscopy has proven itself useful for characterizing body fluids. In 2008, a large-scale investigation was undertaken to explore the use of Raman spectroscopy as a means of identifying body fluids. This work resulted in multidimensional Raman spectroscopic signatures for the five main body fluids: semen, peripheral blood, saliva, vaginal fluid, and sweat. These studies were incredibly successfu

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Ng, Dione K. M. "Development of a Multiplex Exoglycosidase Assay for Diagnosis of Oligosaccharidoses using Tandem Mass Spectrometry." Thesis, University of Ottawa (Canada), 2011. http://hdl.handle.net/10393/28924.

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Oligosaccharidoses are Lysosomal Storage Disorders (LSDs) that result from mutations in genes encoding exoglycosidases, leading to accumulation of unmetabolized N-linked oligosaccharides within lysosomes. Age at onset and rate of disease progression vary among patients. Diagnosis based solely on clinical presentation is often challenging because of overlapping clinical symptoms between these disorders. The aim of this research is to use tandem mass spectrometry (MS/MS) to establish a multiplex method to measure exoglycosidase activities, in dried blood spots (DBS), involved in the degradation

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St, Ange Kalib. "Structural Analysis of Bovine Derived Heparins." Thesis, Rensselaer Polytechnic Institute, 2018. http://pqdtopen.proquest.com/#viewpdf?dispub=10682096.

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<p> Bovine heparin is characteristically different than porcine intestinal heparin. These differences include sulfation, molecular weight properties, activity, structure, and shape. Bovine lung heparin has a higher amount of GlcNY6S (where Y can represent Ac or S) while the amount of GlcNY6S is much lower in bovine intestinal heparin. All heparins have high amounts of trisulfated TriS disaccharide but the level of TriS is in lower in bovine intestinal heparin. The amount of NS2S is much higher in bovine intestinal heparin than in bovine lung and porcine intestinal heparins. The average molecul

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Oliver, John William Kidder. "Design and Improvement of the Biosynthesis of 2,3--Butanediol from CO2 by Metabolic Engineering of Cyanobacterium Synechococcus elongatus PCC7942." Thesis, University of California, Davis, 2015. http://pqdtopen.proquest.com/#viewpdf?dispub=3685273.

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<p> This dissertation describes metabolic engineering of cyanobacterium <i> Synechococcus elongatus</i> PCC7942 as a photosynthetic host for the conversion of CO<sub>2</sub> into 2,3-butanediol. Current advances in pathway design, genetic tool development, and yield improvement are described (Chapter 1). A pathway for the synthesis of 2,3-butanediol is designed based on collective concepts of pathway strength, robustness, and irreversibility, and extensively tested through the generation of mutants (Chapter 2). This pathway is then optimized through modulation of translation by combinatorial m

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Williams, Wesley S. "Method development for long-term monitoring of heavy metals in mussel shells by laser-ablation inductively-coupled-plasma mass-spectrometry." Thesis, The University of Tulsa, 2014. http://pqdtopen.proquest.com/#viewpdf?dispub=3622730.

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<p> Heavy metal pollution is a growing concern as growing worldwide population and industrial processes increase pollution levels in most environments. High metal concentrations throughout ecosystems pose a serious threat to wild-life and human health. Methods to monitor rising threat levels of metals are a primary concern for monitoring overall ecosystem health. Mechanisms which spread pollution must be intimately understood because of the persistence of heavy metals. Heavy metal contamination in the Tar Creek superfund site provides a great case study to selectively observe differences in he

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Markoglou, Nektaria. "Immobilized enzymes as on-line probes in biochemistry and new drug discovery : biosynthesis of catecholamines." Thesis, McGill University, 2001. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=37655.

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The use of immobilized enzymes has steadily increased in recent years. Based upon the advantages that immobilized enzymes possess over soluble enzymes, numerous applications have emerged in medical and analytical fields. This work demonstrates the applicability of a liquid chromatographic system based upon coupled on-line immobilized enzyme reactors (IMERs) to organic synthesis, biochemistry and pharmacology. It is envisioned that the model system will grow into a modular process where synthetic chemists can add or subtract the enzymes necessary for their particular synthetic goal. The system

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Wu, Xin 1967. "Probing colloidal forces with surface collisions." Thesis, McGill University, 1996. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=40469.

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The principal objectives of this thesis are to introduce a new method, colloidal particle scattering (CPS), to measure colloidal and surface forces, and to demonstrate various applications of this method. CPS determines particle-particle interaction forces through creating particle collisions and extracting the interaction forces from the degree of asymmetry of the collision trajectories. Since the force to deflect a micron-sized particle is much smaller than that to deform a macroscopic spring or cantilever used in a commercial force apparatus, this new technique increases the resolution of f

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Baldwin, Jean A. "Surface enhances Raman scattering of mercaptopyridine and pyrazinamide and the fabrication of a metal-ion sensor." Thesis, McGill University, 1996. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=40315.

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Surface Enhanced Raman Scattering (SERS) is a process by which molecules near certain special metal surfaces exhibit Raman scattering that is measurably more intense than is the normal Raman scattering exhibited by molecules in the absence of the surface. The majority of SERS-active metal substrates, such as roughened electrodes and colloidal sols, are fabricated from coinage metals, Au, Ag and Cu. The principal subject of this thesis is the surface enhanced Raman spectroscopic study of the adsorbates; pyrazinamide, 2- and 4-mercaptopyridine. A range of SERS-active Ag substrates was used, viz.

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Li, Kuo-Bin. "Development of computer-assisted methods for the resonance assignment of heteronuclear 3D NMR spectra of proteins." Thesis, McGill University, 1996. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=40381.

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An automated sequential assignment protocol for proteins is presented using heteronuclear 3D NMR. For the observed amino acid spin systems, the protocol includes an algorithm to determine their amino acid types. For the detected polypeptides, the protocol includes another algorithm to sequentially map them to the primary sequence. The former algorithm measures the similarity between the detected spin systems and the 20 standard amino acid patterns. Both chemical shift and topological likeness are considered. Knowing the amino acid types, the mapping algorithm assigns the detected polypeptides

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Goodman, Gary Gene 1967. "A spectroscopic investigation of the non-aqueous electrochemical double-layer in ultrahigh vacuum." Diss., The University of Arizona, 1998. http://hdl.handle.net/10150/282839.

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The research which will be presented on the combination of Raman spectroscopy with an ultrahigh vacuum (UHV) environment. The data show that UHV Raman spectroscopy is a useful analytical technique for modeling electrochemical interfaces. Raman spectroscopy and x-ray photoelectron spectroscopy (XPS) were utilized to study the surface chemistry of 1-butanol and thiophenol. These molecules were studied on coldly-deposited and annealed Ag films grown in the UHV environment. Surface Raman studies of molecules adsorbed on coldly-deposited Ag films are abundant, because these films support significan

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Taylor, Chad Eric 1968. "A Raman spectroscopic investigation of 1-alkanethiol self-assembled monolayers at Ag surfaces." Diss., The University of Arizona, 1998. http://hdl.handle.net/10150/288869.

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Initial Raman spectra of 1-alkanethiol self-assembled monolayers (SAMs) at mechanically polished (MP) polycrystalline Ag surfaces could not be accurately interpreted for alkanethiol conformational order, because the spectra indicated these monolayers were contaminated. From XPS and Raman spectra of the unmodified MP Ag surfaces, the primary contaminants were identified as graphitic carbon and alkyl hydrocarbons. As determined by XPS, mechanical polishing procedures were adopted which reduced the quantity of these contaminants; nonetheless, significant contaminant band intensity continued to be

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Carter, David Allen 1958. "The application of SERS to the determination of relative adsorption strengths of nitrogen heterocycles on silver electrodes." Diss., The University of Arizona, 1996. http://hdl.handle.net/10150/290662.

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Research was undertaken to explore the application of surface enhanced Raman scattering (SERS) to the understanding of electrosorption phenomena. In particular, the relative strength of interactions between the functional groups of imidazole (N₁, N₂ and the π orbitals) on Ag electrodes was examined. This information is useful in understanding how the presence of these functional groups contributes to the relative adsorption strength of nitrogen heterocycles. A Raman spectrometer equipped with a charge-coupled device (CCD) detector was required to obtain reproducible SERS spectra in this resear

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Flora, Ware Howard. "Characterization and optimization of novel materials and interfaces in organic electronic devices." Diss., The University of Arizona, 2004. http://hdl.handle.net/10150/280511.

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The research embodied in this text involves the characterization and optimization of novel materials and interfaces critical to the performance of organic electronic devices: Thrust 1. A scheme for elucidating the relative significance of energy vs. charge transfer (ET vs. CT) routes to guest dye emission in organic light-emitting diodes (OLEDs) was developed using near-IR emissive phthalocyanine (Pc) or naphthalocyanine (NPc) dopants. CT processes were observed to occur by an oxidized guest mechanism, which may be predicted from the solution electrochemistry of these materials. Additionally,

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Zilch, Lloyd W. "Image charge detection and image charge detection mass spectrometry." [Bloomington, Ind.] : Indiana University, 2008. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3344616.

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Thesis (Ph. D.)--Indiana University, Dept. of Chemistry, 2008.<br>Title from home page (viewed Oct. 8, 2009). Source: Dissertation Abstracts International, Volume: 70-02, Section: B, page: 0994. Adviser: Martin F. Jarrold.

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Levy, Dara Elyn. "Dielectric Monitoring of the Chemical, Rheological, and Morphological Changes Incurred during Cure of Epoxide-Amine Systems." W&M ScholarWorks, 1991. https://scholarworks.wm.edu/etd/1539625660.

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Keifer, David Z. "Charge detection mass spectrometry| Improved charge precision and applications to bacteriophage P22." Thesis, Indiana University, 2016. http://pqdtopen.proquest.com/#viewpdf?dispub=10129671.

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<p> Electrospray ionization (ESI) is a premier method for volatilizing and ionizing biological analytes for mass spectrometry. In conventional mass spectrometry (MS), the spectrum of mass-to-charge ratio (<i>m/z</i>) for an ensemble of ions is measured. ESI produces a distribution of charges for each ionized species, and the mass of each species is determined by assigning a charge state to each peak in the <i>m/z</i> spectrum. These peaks are difficult to resolve for species above the 100-kDa range because of peak broadening and shifting due to salt adducts, incomplete desolvation, and intrins

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Dorflinger, Charles. "CHARACTERIZATION OF CARBON FIBER MICROELECTRODES DECORATED WITH PLATINUM NANOPARTICLES." Case Western Reserve University School of Graduate Studies / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=case1396887958.

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46

Li, Li. "Optimization of Micro-manufactured Human Sensing Platform." Case Western Reserve University School of Graduate Studies / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=case152294755902939.

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47

Lee, Pauline P. "Kinetic studies of the thermal decomposition of explosives using accelerating rate calorimetry." Thesis, University of Ottawa (Canada), 1986. http://hdl.handle.net/10393/22142.

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Ramos, Dennis. "Conformational studies of cell division regulator MinE by nuclear magnetic resonance and circular dichroism spectroscopy." Thesis, University of Ottawa (Canada), 2006. http://hdl.handle.net/10393/27288.

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Symmetric division of Gram-negative bacteria depends on the combined action of three proteins that ensure correct positioning of the cell division septum; namely, MinC, MinD and MinE. To achieve this function, MinC and MinD form a membrane-bound complex that blocks cell division at all potential sites. Opposing this inhibition is MinE, which interacts with MinD via its N-terminal anti-MinCD domain to site-specifically counter the action of the MinCD complex. The anti-MinCD domain has been proposed to bind MinD in a helical conformation, however, little is actually known about the structure of

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Wiggins, Bryan Blake. "Using Induced Signals to Develop a Position-Sensitive Microchannel Plate Detector." Thesis, Indiana University, 2018. http://pqdtopen.proquest.com/#viewpdf?dispub=10686059.

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<p> A novel concept to provide position-sensitivity to a microchannel plate (MCP) is described. While several designs exist to make MCPs position sensitive, all these designs are based upon collection of the electrons. In contrast, this approach utilizes an induced signal as the electron cloud emanates from an MCP and passes a wire plane. We demonstrate the validity of the concept by constructing a device that provides single electron detection with 98 μm position resolution (FWHM) over an area of 50 mm × 50 mm. The characteristics of the detector are described through both bench-top

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Buckingham, Grant Thornton. "Pyrolysis and spectroscopy of cyclic aromatic combustion intermediates." Thesis, University of Colorado at Boulder, 2016. http://pqdtopen.proquest.com/#viewpdf?dispub=10108707.

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<p> We have studied the pyrolysis of aromatic combustion intermediates using an array of detection techniques. The molecules investigated include cyclic aromatic molecules with hydrocarbon substituents (ethylbenzene, n-propylbenzene, isopropylbenzene, and styrene), oxygen-containing substituents (anisole and phenol), resonance stabilized radicals (benzyl radical and tropyl radical) and phenyl radical. At the exit of a resistively heated micro-reactor (1 mm inner diameter, 3 cm long), the pyrolysis fragments are detected using photoionization mass spectrometry (PIMS), matrix isolation vibrati

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