Dissertations / Theses on the topic 'Analytical techniques'
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Wong, Won Gina Micheline. "Selected analytical techniques in dendroanalysis." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape2/PQDD_0021/MQ58102.pdf.
Full textHreczuk-Hirst, Dale. "Rapid analytical techniques for ondansetron." Thesis, University of Sunderland, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.284754.
Full textOlsson, Jeanette. "New Techniques for Chiral Separations." Doctoral thesis, Karlstad : Faculty of Technology and Science, Chemistry, Karlstads universitet, 2008. http://www.diva-portal.org/kau/abstract.xsql?dbid=1594.
Full textSeetohul, L. Nitin. "Novel applications of optical analytical techniques." Thesis, Teesside University, 2009. http://hdl.handle.net/10149/117905.
Full textKahoul, Asma. "Reconfigurable architecture floorplan optimisation using analytical techniques." Thesis, Imperial College London, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.550949.
Full textSimjee, Nafeesa. "Development of microelectrode techniques for analytical measurements." Thesis, University of Warwick, 2003. http://wrap.warwick.ac.uk/2664/.
Full textShams, Saleema Bashir. "Some new micro analytical techniques in biochemistry." Thesis, University of Salford, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.245056.
Full textNigam, Atish 1981. "Analytical techniques for debugging pervasive computing environments." Thesis, Massachusetts Institute of Technology, 2004. http://hdl.handle.net/1721.1/17962.
Full textIncludes bibliographical references (p. 63-65).
User level debugging of pervasive environments is important as it provides the ability to observe changes that occur in a pervasive environment and fix problems that result from these changes, especially since pervasive environments may from time to time exhibit unexpected behavior. Simple keepalive messages can not always uncover the source of this behavior because systems can be in an incorrect state while continuing to output information or respond to basic queries. The traditional approach to debugging distributed systems is to instrument the entire environment. This does not work when the environments are cobbled together from systems built around different operating systems, programming languages or platforms. With systems from such disparate backgrounds, it is hard to create a stable pervasive environment. We propose to solve this problem by requiring each system and component to provide a health metric that gives an indication of its current status. Our work has shown that, when monitored at a reasonable rate, simple and cheap metrics can reveal the cause of many problems within pervasive environments. The two metrics that will be focused on in this thesis are transmission rate and transmission data analysis. Algorithms for implementing these metrics, within the stated assumptions of pervasive environments, will be explored along with an analysis of these implementations and the results they provided. Furthermore, a system design will be described in which the tools used to analyze the metrics compose an out of bound monitoring system that retains a level of autonomy from the pervasive environment. The described system provides many advantages and additionally operates under the given assumptions regarding the resources available
(cont.) within a pervasive environment.
by Atish Nigam.
M.Eng.
Stamatopoulos, Ioannis D. "Analytical techniques for modelling the laminated waveguide." Thesis, University of Surrey, 2003. http://epubs.surrey.ac.uk/844108/.
Full textCardoso, dos Santos Josué. "Study of the dynamics around celestial bodies using analytical and semi-analytical techniques." Universidade Estadual Paulista (UNESP), 2018. http://hdl.handle.net/11449/155950.
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
Nowadays, despite the technological development experienced by science in general, a fact especially evident by the available powerful computer machines, the analytical and semi-analytical methods to study different space problems are still of great importance in the fields of astrodynamics and celestial mechanics. From the physical understanding of the motion of celestial bodies to the planing and designing of space missions, the use of mathematical models to deal with a very large number of contemporary problems plays a fundamental role in the progress of human knowledge. In this context, the present thesis presents the use of different mathematical techniques to deal with different various and current problems in astrodynamics and celestial mechanics. The studies developed throughout this work are applicable to both areas. The topics studied are the following ones: (1) The development of disturbing potentials using the double-averaging process, in order to be included in the Lagrange planetary which are numerically integrated to study features of orbits around Mercury and the Galilean moon Callisto; (2) The use of different perturbation integrals, techniques to identify and map different perturbations present in a planetary system, with focus on the analysis of systems of Giant planets with their massive moons; (3) The use of the concept of intermediary Hamiltonian and the use of a canonical transformation called elimination of the parallax, both to deal with binary systems in the context of the roto-orbital dynamics, this one as an approach of the fulltwo body problem; (4) An updated analysis of Gauss variational equations to study quasisatellite orbits around the Martian moon Phobos and with analytical predictions made after obtaining linear and averaged equations of motions. Therefore, this thesis intend not only to provide important analysis and results for each specific problem which it deals with along its pages, but also seeks to highlighting the merit and current relevance of different analytical and semi-analytical methods to be used in the fields of astrodynamics and celestial mechanics. Additionally, the author also hopes to offer an outcome of diverse interesting ideas and methods to be explored in future investigations in these research fields
Na atualidade, a despeito do desenvolvimento tecnológico experimentado pela ciência em geral, algo especialmente evidenciado por poderosas máquinas computacionais disponíveis, os métodos analíticos e semianalíticos para o estudo de diferentes problemas espaciais ainda são de grande importância nos campos de astrodinâmica e mecânica celeste. Desde a compreensão física do movimento de corpos celestes até ao planejamento e projeto de missões espaciais, o uso de modelos matemáticos para lidar com um grande número de problemas contemporâneos desempenha um papel fundamental no progresso do conhecimento humano. Neste contexto, a presente tese apresenta o uso de diferentes técnicas matemáticas para lidar com diversos e atuais problemas em astrodinâmica e mecânica celeste. Os estudos desenvolvidos ao longo deste trabalho são aplicáveis à ambas as áreas. Os tópicos estudados são os seguintes: (1) O desenvolvimento de potenciais perturbadores usando o processo de dupla média, de forma a serem incluídos nas equações planetárias de Lagrange que são integradas numericamente para estudar características de órbitas ao redor de Mercúrio e da lua galileana Calisto; (2) A utilização de diferentes integrais de perturbação, técnicas para identificar e mapear diferentes perturbações presentes em um sistema planetário, com foco na análise de sistemas de planetas gigantes com suas luas massivas; (3) A utilização do conceito de hamiltoniana intermediária e o uso de uma transformação canônica chamada eliminação da paralaxe, ambos para lidar com sistemas binários no contexto da dinâmica roto-orbital, essa sendo uma aproximação do problema completo de dois corpos; (3) Uma análise atualizada de equações variacionais de Gauss para o estudo de órbitas quasi-satélite ao redor da lua marciana Fobos e com predições analíticas realizadas após serem obtidas equações de movimento linearizadas e com média. Portanto, esta tese pretende não somente prover importantes análises e resultados para cada problema específico com os quais a mesma lida ao longo de suas páginas, mas também procura destacar o mérito e relevância atual de diferentes métodos analíticos e semianalíticos a serem utilizados nos campos de astrodinâmica e mecânica celeste. Adicionalmente, o autor também espera oferecer um produto de variadas ideias e métodos a serem explorados em futuras investigações nesses campos de pesquisa
2013/26652-4
2015/18881-9
Pla, i. Vilanova Pepita. "Development of emerging analytical techniques for speciation studies." Doctoral thesis, Universitat de Lleida, 2020. http://hdl.handle.net/10803/671154.
Full textEsta tesis ofrece nuevos conocimientos sobre el campo de las técnicas de especiación basados en medidas de concentraciones de iones libres. Las dos contribuciones principales son: (i) la detección de nuevos elementos y (ii) la mejora de las técnicas. La primera parte se centra en la determinación electroquímica de dos elementos trivalentes como son el In y el Sb. Últimamente, estos dos elementos han recibido mucha atención, debido a sus aplicaciones crecientes y los posibles efectos en el medio ambiente. Por lo tanto, es necesario tener técnicas analíticas adecuadas y fiables, para ambos elementos. Para el análisis de In, se midieron concentraciones de In total y libre en solución mediante dos técnicas electroanalíticas complementarias, SCP (Stripping chronopotentiometry) y AGNES (Absence of gradients and Nernstian equilibrium stripping), ambas implementadas con el TMF/RDE (Thin mercury film/rotating disk electrodes). Con ambas técnicas se alcanzaron límites de detección nanomolares. AGNES fue empleada para el estudio de la disolución de nanopartículas In2O3, dado su amplio uso tecnológico. El pH y el efecto de los ligandos lábiles en solución afectaban signicativamente su cuantificación. También se estudiaron las ventajas de utilizar el TMF/RDE ante el HMDE (Hanging mercury drop electrode), consiguiendo tiempos experimentales más cortos incluso cuando se determinan concentraciones libres pequeñas. Las medidas presentadas de Sb representan la primera aplicación de AGNES para detectar una especie particular de Sb(III) en una solución acuosa. El Sb como ion libre es prácticamente inexistente, debido a su extensa hidrólisis. Así pues, su detección se basó en seguir las concentraciones de Sb(OH)3(aq). Dos variantes diferentes de AGNES se emplearon para el análisis de Sb y fueron comparadas. Mediante la variante AGNES-Q se obtuvieron resultados aceptables, pero los tiempos de stripping que necesitaba eran largos. Por otra parte, AGNES-SCP resulta ser la técnica mas ventajosa, ya que demostró ser mas rápida y reproducible. Esta prometedora metodología abre camino para hacer frente a la especiación de Sb con AGNES en otros sistemas y medios. La segunda parte de esta tesis se centra en mejorar la aplicabilidad y la eficiencia de la técnica DMT (Donnan membrane technique). Esto se llevó a cabo estudiando varios cambios en la metodología empleada, agrupadas de la siguiente manera: variables experimentales, modificaciones instrumentales y composición del acceptor. El primer conjunto mejoró la eficacia y la robustez de la técnica, descartando cualquier efecto potencial de la agitación de la muestra (donor), la temperatura del sistema y el muestreo del acceptor. Por su parte, la modificación instrumental se basó en la optimización de la relación superficie-volumen, variaciones en las dimensiones de la celda de campo y la utilización de hollow fibres. Estas modificaciones representan una manera simple y eficaz de acortar los tiempos experimentales. El último conjunto de experimentos se basó en el ajuste de la composición del acceptor y se aportaron nuevas estrategias para superar los principales inconvenientes de la técnica DMT. Utilizar concentraciones de electrolito soporte más pequeñnas en el acceptor que en la solución donor, resultó en una reducción significativa de los tiempos experimentales. También se vio, por el contrario, que cuando hay una mayor concentración de electrolito de soporte en el acceptor que en el donor, es posible medir muestras más diluidas.
This thesis offers new insights for the speciation techniques field, based on the measurement of free ions concentrations. Two main contributions are: (i) the detection of novel different elements for the discipline and (ii) the improvement of the techniques. The first part focuses on the electrochemical determination of two trivalent elements such as In and Sb. Lately, both elements have received attention, because of their increasing applications and possible effects on the environment. So, appropriate and reliable analytical techniques, for both elements, are necessary. For the analysis of In, we measured total and free In concentrations in a solution using two complementary electroanalytical techniques, SCP (Stripping chronopotentiometry) and AGNES (Absence of gradients and Nernstian equilibrium stripping), both implemented with the TMF/RDE (Thin mercury film/rotating disk electrode). We achieved nanomolar limits of detection for both techniques. Also, AGNES was employed to study the dissolution of In2O3 nanoparticles, given its wide technological use. pH and the effect of the labile ligands in solution affected significantly free In quantification. We also studied the advantages of using the TMF/RDE in front of the HMDE (Hanging mercury drop electrode), achieving shorter experimental times even when determining extremely low free In concentrations. Sb measurements represent the first application of AGNES to detect one particular specie of Sb(III) in an aqueous solution. Since Sb as a free ion is practically non-existent, because of the extensive hydrolysis of the element, the detection methodology was based on following Sb(OH)3(aq) concentrations. Two different AGNES variants were studied for Sb analysis and were compared. The variant AGNES-Q yielded acceptable results but needed very long stripping times. On the other hand, a clear advantage was presented by AGNES-SCP, which demonstrated to be faster and more reproducible. This promising methodology opens the way to tackle Sb speciation with AGNES in other systems and media. The second part of this thesis focuses on improving DMT's (Donnan membrane technique) applicability and efficiency. It was performed studying a variety of modifications, based on the following sets of concepts: experimental variables, instrumental modifications, and acceptor composition. The first set improved the efficiency and robustness of the technique, ruling out any potential effect from the sample (donor) stirring, the temperature of the system, and the sampling of the acceptor. Conversely, the instrumental modification is based on optimizing the surface-to-volume ratio, modifying the dimensions of the field cell as well as employing hollow fibres. Such modifications represented to be an effective and simple way to shorten the experimental time. The last set of experiments is based on the tuning of acceptor's composition and it revealed new strategies to overcome significantly major drawbacks of the DMT technique. Lower supporting electrolyte concentrations in the acceptor than in the donor solution presented a significant reduction of the experimental times. On the other hand, higher supporting electrolyte concentrations in the acceptor than in the donor, allows to measure more diluted samples.
Altun, Zeki. "New Techniques for Sample Preparation in Analytical Chemistry." Licentiate thesis, Karlstad University, Division for Chemistry, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-1374.
Full textSample preparation is often a bottleneck in systems for chemical analysis. The aim of this work was to investigate and develop new techniques to address some of the shortcomings of current sample preparation methods. The goal has been to provide full automation, on-line coupling to detection systems, short sample preparation times and high-throughput.
A new technique for sample preparation that can be connected on-line to liquid chromatography (LC) and gas chromatography (GC) has been developed. Microextraction in packed syringe (MEPS) is a new solid-phase extraction (SPE) technique that is miniaturized and can be fully automated. In MEPS approximately 1 mg of sorbent material is inserted into a gas tight syringe (100-250 μL) as a plug. Sample preparation takes place on the packed bed. Evaluation of the technique was done by the determination of local anaesthetics in human plasma samples using MEPS on-line with LC and tandem mass spectrometry (MS-MS). MEPS connected to an autosampler was fully automated and clean-up of the samples took one minute. In addition, in the case of plasma samples the same plug of sorbent could be used for about 100 extractions before it was discarded.
A further aim of this work was to increase sample preparation throughput. To do that disposable pipette tips were packed with a plug of porous polymer monoliths as sample adsorbent and were then used in connection with 96-well plates and LC-MS-MS. When roscovitine in human plasma and water samples was used as model substance, a 96-plate was handled in two minutes.
Milne, Kenneth Thallon. "An investigation into IKBS techniques for analytical spectrofluorimetry." Thesis, Heriot-Watt University, 1986. http://hdl.handle.net/10399/1078.
Full textAlmeida, Joao Carlos Gomes Rocha de. "Analytical techniques for the structural evaluation of pavements." Thesis, University of Nottingham, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.357095.
Full textFancy, Sally-Ann. "Physical and analytical applications of ion trapping techniques." Thesis, University of Kent, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.311226.
Full textStarkey, 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.
Full textSource: Dissertation Abstracts International, Volume: 68-09, Section: B, page: 5919. Adviser: Milos V. Novotny. Title from dissertation home page (viewed May 9, 2008).
Lahib, Ahmad. "Analytical Developments for Measuring Atmospheric Peroxy Radicals." Electronic Thesis or Diss., Ecole nationale supérieure Mines-Télécom Lille Douai, 2019. http://www.theses.fr/2019MTLD0022.
Full textPeroxy radicals (HO2 and RO2) are key species in atmospheric chemistry, which together with the hydroxyl radical (OH), are involved in oxidation processes leading to the formation of secondary pollutants such as ozone and organic aerosols. Monitoring these short-lived species during intensive field campaigns and comparing the measured concentrations to box model simulations allow assessing the reliability of chemical mechanisms implemented in atmospheric models. However, ambient measurements of peroxy radicals are still considered challenging and only a few techniques have been used for field measurements.The main objective of this work was to improve our knowledge on two measurement techniques: CA (Chemical Amplification) and ROxLIF (Rox Laser Induced Fluorescence). CA is a chemical technique for measuring the sum of peroxy radicals (HO2+RO2) whose simplicity and low cost makes it attactive for field measurements. ROxLIF is a laser-based technique allowing to speciate HO2 and the sum of RO2. In the first part of this thesis, a two-channel chemical amplifier was built at IMT Lille Douai (France) and characterized using 2 different amplification chemistries (PERCA, PEroxy Radical Chemical Amplifer, and ECHAMP, Ethane CHemical AMPlifier). In a second part, the ROxLIF technique was implemented on an existing FAGE (Fluorescent Assay by Gas Expansion) instrument at Indiana University (United States). Both the CA and ROxLIF were tested for ambient measurements. In a last part, the CA using the PERCA approach, ROxLIF and an additional technique based on chemical ionization mass spectrometry were intercompared at the HELIOS atmospeheric chamber in Orleans (France). Several experiments were conducted to investigate the reliability of peroxy radical measurments
Haines, Emma Sara. "The application of chemometric techniques to spectroscopic data." Thesis, University of Hull, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.301636.
Full textRämö, J. (Jaakko). "Hydrogen peroxide- metals- chelating agents; interactions and analytical techniques." Doctoral thesis, University of Oulu, 2003. http://urn.fi/urn:isbn:9514269756.
Full textAlam, Aftab. "Analytical and intelligent techniques for dynamcally [sic] secure dispatches." Connect to this title online, 2007. http://etd.lib.clemson.edu/documents/1181251728/.
Full textTymis, Nikolaos. "Analytical techniques for acoustic scattering by arrays of cylinders." Thesis, Loughborough University, 2012. https://dspace.lboro.ac.uk/2134/11376.
Full textMcAlister, John J. "Characterisation of basaltic weathering products by modern analytical techniques." Thesis, Queen's University Belfast, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.329424.
Full textAbdelsalam, Mamdouh Elsayed. "Development of microelectrode techniques for analytical and environmental applications." Thesis, University of Southampton, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.326794.
Full textAlmasoud, Nagla. "Rapid classification and differentiation of bacteria by analytical techniques." Thesis, University of Manchester, 2016. https://www.research.manchester.ac.uk/portal/en/theses/rapid-classification-and-differentiation-of-bacteria-by-analytical-techniques(fae59630-ef83-47fe-a81b-ccd2f57e3e9e).html.
Full textPretorius, Nadine Odette. "Multidimensional analytical techniques for the characterization of aliphatic polyesters." Thesis, Stellenbosch : Stellenbosch University, 2013. http://hdl.handle.net/10019.1/80127.
Full textENGLISH ABSTRACT: Complex polymers are defined by their distributive properties with respect to molecular weight, chemical composition, functionality and molecular topology. As a result, polymer properties are very frequently determined not only by one of these entities but by the correlation of two or more distributions. Aliphatic polyesters are industrially implemented in high performance coatings, paints and varnishes. However, it is typically difficult to correlate the resulting properties with the synthesis parameters as these polymers vary in reactivity and application properties. Copolyester synthesis by direct polyesterification is often assumed to produce randomized products due to the mechanisms involved in stepwise polymerization. The formation of cyclic products by intramolecular reactions of hydroxyl (OH) and carboxylic (COOH) functional groups, sidereactions such as transesterification, alcoholysis, and ester-ester interchange allow even further randomization, enabling a highly complex system. Therefore, in addition to molecular weight distribution, polyesters exhibit chemical composition, functionality type as well as branching distributions, classifying them as complex polymeric systems. The different methods of polymer chromatography in combination with sophisticated spectrometry techniques are useful tools for enabling the full description of the molecular heterogeneity of these complex polyesters. The present study entails method development of different modes of chromatography and mass spectrometry along with their combination, to facilitate the analysis of the various distributions of two model polyester systems, phthalic and maleic anhydride, respectively, in combination with propylene glycol. Gradient HPLC analysis enabled an oligomeric separation based on chemical composition of the respective anhydride/propylene glycol samples. Its off-line coupling to MALDITOF MS and ESI-QTOF MS revealed the presence of several distributions of varying endgroup functionality type and molecular weight distributions at different intervals throughout the polymerization. In addition, online gradient HPLC x size exclusion chromatography (2D-LC) was conducted to obtain the dual chemical composition-molecular weight (CCD-MWD) distribution. The combination of the different coupling techniques provided the opportunity to a more in-depth analysis of the structure-property relationships.
AFRIKAANSE OPSOMMING: Komplekse polimere word gedefinieer deur hul verdelings eienskappe ten opsigte van molekulêre massa, chemiese samestelling, funksionaliteit en molekulêre topologie. Gevolglik, word hul eienskappe dikwels bepaal deur nie net een van hierdie entiteite nie, maar ‘n korrelasie van twee of meer verdelings. Alifatiese poliësters word industrieel geϊmplimenteer in hoë werkverrigting bestrykings, verwe en politoere, dog is dit tipies moeilik om die uiteinde eienskappe met die verwante sintese parameters te korrelleer, aangesien die polimere varieer in reaktiviteit en toepassingseienskappe. Ko-poliëster sintese vanaf direkte poliësterivering word dikwels aanvaar om willekeurige produkte op te lewer as gevolg van die meganismes wat betrokke is tydens trapgroei polimerisasie. Die produsering van sikliese produkte weens intra-molekulêre reaksies van hidroksiel(OH) en karboksiel (COOH) verwante funksionele groepe, newereaksies soos transverestering, alkoholise en ester-ester verwisseling, het verdere ewekansigmaking tot gevolg wat ‘n hoog gekomplekseerde sisteem tot gevolg het. Benewens die molekulere massa verdeling, vertoon poliësters dus chemiese samestelling, funksionaliteit tipe so wel as vertakkings verdeling wat hul as komplekse polimeer sisteme klassifiseer. Die verskillende metodes van polimeer chromatografie in kombinasie met gesofistikeerde spektrometriese tegnieke dien as nuttige bronne vir die volledige beskrywing wat betref die molekulêre heterogeniteit van komplekse poliesters. Die huidige studie stel metode ontwikkeling van verskillende modus van chromatografie, massa spektrometrie sowel as hul aaneenvoeging bekend, om die die verskillende verdelings van twee model poliester sisteme, ftaal- en maleϊensuuranhidried onderskeidelik in kombinasie met propileenglikol, suksesvol te analiseer. Gradiënt hoë-druk vloeistof chromatografie (HPLC) analise het ‘n oligomeriese skeiding, gebaseer op die chemiese samestelling van die verskeie anhidried /propileenglikol monsters, opgelewer. Die nie-gekoppelde skakeling met matriks-assisteerdelaser/ desorpsie-ionisasie tyd-van-vlug (MALDI-TOF) en elektron-sproei-ionisasie kwadrupool-tyd-van-vlug (ESI-QTOF) massa spektrometrie het die teenwoordigheid van verskeie verdelings van varieërende endgroep funksionaliteit tipe en molekulêre verdelings by verskillende intervalle tydens die polimerisasie aan die lig gebring. Gekoppelde skakeling van gradient HPLC en grootte uitsluitings chromatografie is ook uitgevoer om die tweedelige chemiese samestelling-molekulere massa verdeling te bepaal. Aaneenvoeging van die verskeie skakelings tegnieke het die geleentheid gebied om ‘n deeglike studie van die struktuureienskappe verhoudinge suksesvol uit te voer.
Angel-Smith, Sarah Jane. "Characterisation of diesel injector deposits using advanced analytical techniques." Thesis, University of Nottingham, 2018. http://eprints.nottingham.ac.uk/50745/.
Full textFrontasyeva, M. V. "Nuclear and related analytical techniques for bio-nano- technology." Thesis, Sumy State University, 2011. http://essuir.sumdu.edu.ua/handle/123456789/20683.
Full textAbel, Hermione. "An analytical study of narrative techniques in Giono's Regain." Thesis, Rhodes University, 1986. http://hdl.handle.net/10962/d1002008.
Full textXia, Hong Carleton University Dissertation Engineering Civil. "Effective analytical techniques for the dynamic analysis of structures." Ottawa, 1993.
Find full textBao, Ye. "Enantiomeric separations and microorganism studies with analytical separation techniques." [Ames, Iowa : Iowa State University], 2008.
Find full textShim, Sohie. "Analytical techniques for differentiating huacaya and suri alpaca fibers." Connect to this title online, 2003. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1064202091.
Full textDocument formatted into pages; contains x, 108 p. Includes bibliographical references (p. 102-108). Abstract available online via OhioLINK's ETD Center; full text release delayed at author's request until 2006 Sep. 22.
Sartoros, Christine. "Application of artificial intelligence techniques for inductively coupled plasma spectrometry." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape10/PQDD_0016/NQ44574.pdf.
Full textHargreaves, Elaine Carol. "Applications of surface vibrational spectroscopic techniques." Thesis, University of Nottingham, 1997. http://eprints.nottingham.ac.uk/28593/.
Full textMurphy, N. A. D. "Analytical wing weight prediction/estimation using computer based design techniques." Thesis, Cranfield University, 1987. http://hdl.handle.net/1826/3379.
Full textPonnampalam, Dino R. "The development of analytical techniques for the characterisation of nanotubes." Thesis, University of Nottingham, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.493114.
Full textAlmohanadi, A. H. "Application of analytical placement techniques for floorplanning in VLSI design." Thesis, University of Kent, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.233396.
Full textRodrigues, Paula Alexandra Pinto. "Archaeological roman glasses: comparative characterisation by non-destructive analytical techniques." Master's thesis, Faculdade de Ciências e Tecnologia, 2011. http://hdl.handle.net/10362/6145.
Full textKaza, Lakshmi S. "Novel Thermal Analytical Techniques to Characterize Drugs and Drug Delivery." Cleveland State University / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=csu1317258017.
Full textPearce, E. I. "Analytical techniques for the study of soft contact lens spoilation." Thesis, Aston University, 1991. http://publications.aston.ac.uk/9761/.
Full textMcKenzie, James. "Assessment of the complementarity of data from multiple analytical techniques." Thesis, University of York, 2013. http://etheses.whiterose.ac.uk/4471/.
Full textLi, Linlin. "Microstructure characterization of polymers by modern NMR techniques." University of Akron / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=akron1353000762.
Full textKong, Cher Rong Matthew. "Contactless liquid flow control for miniaturised analytical techniques on continually rotating centrifugal microfluidic platforms." Thesis, McGill University, 2013. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=117150.
Full textDans notre société industrielle, la conception de techniques pour la quantification d'espèces chimiques dans l'environnement, les humains et les dérivés de la production manufacturière est primordiale. Au départ, ces techniques avaient été élaborées à partir d'instruments sophistiqués et se basaient sur des procédures complexes. Il serait donc avantageux de pouvoir réduire les coûts d'analyse et simplifier les procédures expérimentales, tout en maintenant un niveau élevé de la qualité des données recueillies. De plus, il est souvent souhaitable de pouvoir effectuer ces mesures rapidement, et si possible sur le site où l'échantillon à analyser est recueilli. Toutes ces caractéristiques bénéfiques des méthodes analytiques peuvent être obtenues, dans certains cas, à travers la miniaturisation. L'intérêt pour la miniaturisation a mené à une croissance rapide des systèmes microfluidiques, un domaine d'études qui se concentre sur l'utilisation de petits volumes de liquide et des systèmes de détection spécialement adaptés à ces volumes réduits. Tout système microfluidique doit intégrer une méthode de transfert des liquides à travers différentes étapes de traitements chimiques ou physiques. Une méthode de pompage particulièrement intéressante utilise la force centrifuge, ce qui permet d'éliminer l'utilisation de pompes ou connections externes au système où s'effectue l'analyse chimique. Jusqu'à présent, les systèmes employant la force centrifuge ont été limités par le nombre d'étapes analytiques consécutives, le liquide ne pouvant se déplacer que dans une seule direction définie par la force centrifuge appliquée.Pour cette thèse, plusieurs techniques de manipulation des liquides sur un système microfluidique à base de force centrifuge ont été dévelopées et caractérisées. Ces techniques ont été utilisées pour miniaturiser les méthodes analytiques classiques pour ensuite les intégrer à des plateformes microfluidiques à base de force centrifuge, l'objectif final étant la surveillance d'espèces chimiques dans l'environnement. Une technique de pompage par déplacement de deux phases liquides et une technique de pompage pneumatique à base de force centrifuge sont démontrées. La technique pneumatique à base de force centrifuge qui a été développée augmente de façon significative les capacités de la boîte à outils des systèmes microfluidiques à base de force centrifuge. Ce nouveau système permet d'effectuer simultanément des opérations essentielles dans les systèmes microfluidiques telles que le transfert de liquides sans valves, les dosages, la commutation du débit des liquides, les micromélanges par agitation ainsi que la recirculation des liquides. Cette technique se base sur l'application sans contact d'une pression pneumatique en utilisant de l'air comprimé sur un système microfluidique à base de force centrifuge en rotation constante. Ceci permet un contrôle complet du débit des liquides en combinant les effets de la pression pneumatique et de la force centrifuge. Le processus de fabrication de ce nouveau système est grandement simplifié par l'ajout du système pneumatique car cela diminue le nombre de valves à intégrer dans le système. De plus, son efficacité est accrue grâce à la possibilité d'effectuer des analyses de façon automatisée. Cette approche pneumatique a été appliquée à des mesures spectrophotométriques par la méthode des additions connues effectuées directement sur le disque. Dans le même ordre d'idées, un autre système employant la fonction pneumatique a été développé pour effectuer des extractions liquide-liquide entre une phase liquide et une phase organique. Ceci a démontré que la plateforme centrifuge est capable non seulement d'effectuer des réactions chimiques complexes en plusieurs étapes, mais aussi de répéter les cycles de réactions et autres processus.
Avula, Satya Girish Chandra. "Lipidomics of Algae and Human Plasma by Chromatography and Mass Spectrometry Techniques." Cleveland State University / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=csu1470822409.
Full textCacha, Brian Joseph Gonda. "Metallic nanoparticle deposition techniques for enhanced organic photovoltaic cells." Thesis, California State University, Long Beach, 2015. http://pqdtopen.proquest.com/#viewpdf?dispub=1598627.
Full textEnergy generation via organic photovoltaic (OPV) cells provide many advantages over alternative processes including flexibility and price. However, more efficient OPVs are required in order to be competitive for applications. One way to enhance efficiency is through manipulation of exciton mechanisms within the OPV, for example by inserting a thin film of bathocuproine (BCP) and gold nanoparticles between the C60/Al and ZnPc/ITO interfaces, respectively. We find that BCP increases efficiencies by 330% due to gains of open circuit voltage (Voc) by 160% and short circuit current (Jsc) by 130%. However, these gains are complicated by the anomalous photovoltaic effect and an internal chemical potential. Exploration in the tuning of metallic nanoparticle deposition on ITO was done through four techniques. Drop casting Ag nanoparticle solution showed arduous control on deposited morphology. Spin-coating deposited very low densities of nanoparticles. Drop casting and spin-coating methods showed arduous control on Ag nanoparticle morphology due to clustering and low deposition density, respectively. Sputtered gold on glass was initially created to aid the adherence of Ag nanoparticles but instead showed a quick way to deposit aggregated gold nanoparticles. Electrodeposition of gold nanoparticles (AuNP) proved a quick method to tune nanoparticle morphology on ITO substrates. Control of deposition parameters affected AuNP size and distribution. AFM images of electrodeposited AuNPs showed sizes ranging from 39 to 58 nm. UV-Vis spectroscopy showed the presence of localized plasmon resonance through absorption peaks ranging from 503 to 614 nm. A linear correlation between electrodeposited AuNP size and peak absorbance was seen with a slope of 3.26 wavelength(nm)/diameter(nm).
Jenkins, Glynn Edwin Fayrfax Robert Wilder Philip van Carver Robert Lupi Johannes Certon Pierre Sermisy Claudin de Johnson Robert Douglas Patrick. "Latin polyphony in Scotland, 1500-1560 (with studies in analytical techniques) /." Online version, 1988. http://ethos.bl.uk/OrderDetails.do?did=1&uin=uk.bl.ethos.380815.
Full textAppendix A (v. I, leaves 367-388) "presents information relating to William Finschear the elder, a burgess of Edinburgh and possibly scribe of the Dunkeld Partbooks." Vol. II contains editions with commentary of the following works: Robert Fayrfax, Ave Dei Patris filia; Philip van Wilder, Vidi civitatem; van Wilder, Aspice Domine; Robert Carvor [sic], Mass Dum sacrum mysterium; Carvor, Mass Sine nomine a 5; Johannes Lupi, Ad nutum Domini nostrum; Pierre Certon, Regina caeli; Claudin de Sermisy, O Maria stans sub cruce; Robert Johnson, Domine in virtute tua; Patrick Douglas, In convertendo Domini. Publisher's no.: DX 82363. Includes bibliographical references (v. I, leaves 448-456).
Ivanov, André. "BIST signature analysis : analytical techniques for computing the probability of aliasing." Thesis, McGill University, 1988. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=75923.
Full textThis dissertation focuses on the popular BIST scheme that consists of applying pseudorandom test patterns to a CUT and compacting the latter's response by a signature analysis register (LFSR). Assessing the quality of such a scheme in regard to fault coverage is crucial. Fault coverage can be established by full fault simulation. However, high costs may preclude this approach. Other techniques, probabilistic in nature, have been proposed, but a lack of computationally feasible techniques for analyzing the aliasing problem under a reasonable model has left them elusive. Here, new and computationally feasible techniques are developed. More specifically, closed-form expressions for the probability of aliasing are derived for a certain type of LFSRs. Upper bounds are derived for LFSRs characterized by primitive polynomials. An iterative technique is developed for computing the exact probability of aliasing for LFSRs characterized by any feedback polynomial, and for any test sequence length. These new techniques enable better assessments of the quality of BIST schemes that use signature analysis for response compaction. In turn, they are useful for making important design decisions, e.g., determining the number of test patterns that should be applied to a CUT to achieve a certain test confidence; alternatively, deciding how long the signature analyzer should be, and what type of feedback it should possess to achieve a certain desired test confidence.
The techniques developed for computing the probability of aliasing in BIST are also useful in the context of coding theory. The iterative technique developed for computing the probability of aliasing may be used as an efficient technique for computing the probability of an undetected error for shortened versions of cyclic codes.
Guerra, Elena <1984>. "Milk and dairy products: evaluation of bioactive components by analytical techniques." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2014. http://amsdottorato.unibo.it/6301/.
Full textSalmon, Andrew B. "Application of natural and modified biomacromolecules in miniaturised separative analytical techniques." Thesis, University of Sunderland, 2006. http://sure.sunderland.ac.uk/3783/.
Full textAriffin, Marinah Mohd. "The application of novel extraction and analytical techniques in forensic toxicology." Thesis, University of Glasgow, 2006. http://theses.gla.ac.uk/4144/.
Full textJenkins, G. E. "Latin polyphony in Scotland, 1500-1560 : With studies in analytical techniques." Thesis, University of Exeter, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.380815.
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