Tesis sobre el tema "Synthetic sensor"
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Kallin, Niklas. "Sensor simulation Is - AGXUnity a viable platform for adding synthetic sensors". Thesis, Umeå universitet, Institutionen för datavetenskap, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-158017.
Texto completoClare, Anthony Joseph. "Real-time modelling and sensor fusion for a synthetic vision system". Thesis, University of Sheffield, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.434515.
Texto completoRosander, Regina. "Sensor fusion between a Synthetic Attitude and Heading Reference System and GPS". Thesis, Linköping University, Department of Electrical Engineering, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-1766.
Texto completoSensor fusion deals with the merging of several signals into one, extracting a better and more reliable result. Traditionally the Kalmanfilter is used for this purpose and the aircraft navigation has benefited tremendously from its use. This thesis considers the merge of two navigation systems, the GPS positioning system and the Saab developed Synthetic Attitude and Heading Reference System (SAHRS). The purpose is to find a model for such a fusion and to investigate whether the fusion will improve the overall navigation performance. The non-linear nature of the navigation equations will lead to the use of the extended Kalman filter and the model is evaluated against both simulated and real data. The results show that this strategy indeed works but problems will arise when the GPS signal falls away.
Meng, Rui Daniel. "Design and implementation of sensor fusion for the towed synthetic aperture sonar". Thesis, University of Canterbury. Electrical and Computer Engineering, 2007. http://hdl.handle.net/10092/1199.
Texto completoHolder, Martin Friedrich [Verfasser], Hermann [Akademischer Betreuer] Winner y Erwin [Akademischer Betreuer] Biebl. "Synthetic Generation of Radar Sensor Data for Virtual Validation of Autonomous Driving / Martin Friedrich Holder ; Hermann Winner, Erwin Biebl". Darmstadt : Universitäts- und Landesbibliothek, 2021. http://d-nb.info/1233429426/34.
Texto completoRiedel, Jan Verfasser], Reinhard [Akademischer Betreuer] Köster y Dagmar [Akademischer Betreuer] [Wirth. "Development of a synthetic sensor system for the detection of infectious and inflammatory signals / Jan Riedel ; Reinhard Köster, Dagmar Wirth". Braunschweig : Technische Universität Braunschweig, 2019. http://d-nb.info/1194158609/34.
Texto completoPrendes, Jorge. "New statistical modeling of multi-sensor images with application to change detection". Thesis, Université Paris-Saclay (ComUE), 2015. http://www.theses.fr/2015SACLC006/document.
Texto completoRemote sensing images are images of the Earth surface acquired from satellites or air-borne equipment. These images are becoming widely available nowadays and its sensor technology is evolving fast. Classical sensors are improving in terms of resolution and noise level, while new kinds of sensors are proving to be useful. Multispectral image sensors are standard nowadays and synthetic aperture radar (SAR) images are very popular.The availability of different kind of sensors is very advantageous since it allows us to capture a wide variety of properties of the objects contained in a scene. These properties can be exploited to extract richer information about these objects. One of the main applications of remote sensing images is the detection of changes in multitemporal datasets (images of the same area acquired at different times). Change detection for images acquired by homogeneous sensors has been of interest for a long time. However the wide range of different sensors found in remote sensing makes the detection of changes in images acquired by heterogeneous sensors an interesting challenge.Accurate change detectors adapted to heterogeneous sensors are needed for the management of natural disasters. Databases of optical images are readily available for an extensive catalog of locations, but, good climate conditions and daylight are required to capture them. On the other hand, SAR images can be quickly captured, regardless of the weather conditions or the daytime. For these reasons, optical and SAR images are of specific interest for tracking natural disasters, by detecting the changes before and after the event.The main interest of this thesis is to study statistical approaches to detect changes in images acquired by heterogeneous sensors. Chapter 1 presents an introduction to remote sensing images. It also briefly reviews the different change detection methods proposed in the literature. Additionally, this chapter presents the motivation to detect changes between heterogeneous sensors and its difficulties.Chapter 2 studies the statistical properties of co-registered images in the absence of change, in particular for optical and SAR images. In this chapter a finite mixture model is proposed to describe the statistics of these images. The performance of classical statistical change detection methods is also studied by taking into account the proposed statistical model. In several situations it is found that these classical methods fail for change detection.Chapter 3 studies the properties of the parameters associated with the proposed statistical mixture model. We assume that the model parameters belong to a manifold in the absence of change, which is then used to construct a new similarity measure overcoming the limitations of classic statistical approaches. Furthermore, an approach to estimate the proposed similarity measure is described. Finally, the proposed change detection strategy is validated on synthetic images and compared with previous strategies.Chapter 4 studies Bayesian non parametric algorithm to improve the estimation of the proposed similarity measure. This algorithm is based on a Chinese restaurant process and a Markov random field taking advantage of the spatial correlations between adjacent pixels of the image. This chapter also defines a new Jeffreys prior for the concentration parameter of this Chinese restaurant process. The estimation of the different model parameters is conducted using a collapsed Gibbs sampler. The proposed strategy is validated on synthetic images and compared with the previously proposed strategy. Finally, Chapter 5 is dedicated to the validation of the proposed change detection framework on real datasets, where encouraging results are obtained in all cases. Including the Bayesian non parametric model into the change detection strategy improves change detection performance at the expenses of an increased computational cost
Ton, Xuan-Anh. "Fiber optic chemical sensors based on molecularly imprinted polymers for the detection of mycotoxins". Phd thesis, Université de Technologie de Compiègne, 2013. http://tel.archives-ouvertes.fr/tel-01002117.
Texto completoNord, Sofia. "Multivariate Time Series Data Generation using Generative Adversarial Networks : Generating Realistic Sensor Time Series Data of Vehicles with an Abnormal Behaviour using TimeGAN". Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-302644.
Texto completoNär man applicerar en modell för att utföra en maskininlärningsuppgift, till exempel att förutsäga utfall eller upptäcka avvikelser, är det viktigt med stora dataset för att uppnå hög prestanda, noggrannhet och generalisering. Det är dock inte ovanligt att dataset är små eller obalanserade eftersom insamling av data kan vara svårt, tidskrävande och dyrt. När man vill samla tidsserier från sensorer på fordon är dessa problem närvarande och de kan hindra bilindustrin i dess utveckling. Generering av syntetisk data har blivit ett växande intresse bland forskare inom flera områden som ett sätt att hantera problemen med datainsamling. Bland de metoder som undersökts för att generera data har generative adversarial networks (GANs) blivit ett populärt tillvägagångssätt i forskningsvärlden på grund av dess breda applikationsdomän och dess framgångsrika resultat. Denna avhandling fokuserar på att generera flerdimensionell tidsseriedata som liknar fordonssensoravläsningar av lufttryck i bromssystemet av fordon med onormalt beteende, vilket innebär att det finns ett läckage i systemet. En ny GAN modell kallad TimeGAN tränades för att genera sådan data och utvärderades sedan både kvalitativt och kvantitativt. Två versioner av denna modell testades och jämfördes. De erhållna resultaten visade att båda modellerna lärde sig distributionen och den underliggande informationen inom de olika signalerna i den verkliga datan. Målet med denna avhandling uppnåddes och kan lägga grunden för framtida arbete inom detta område.
Costa, Jorge Alberto Lopes da. "Avaliação de dados de radar do sensor SAR-R99B no mapeamento do uso e cobertura da terra na Amazônia Central, município de Manaus, AM". Universidade Federal do Amazonas, 2011. http://tede.ufam.edu.br/handle/tede/4514.
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In recent decades the areas of rainforest in the Amazon region has been heavily impacted by a rapid process of conversion of vegetation cover in other types of use due to human action. In the context of global change, the use of mapping and monitoring land cover and provide information for the analysis and evaluation of environmental impacts due to accelerated changes in the landscape. Therefore, this study evaluated the potential of data from synthetic aperture radar for discriminating use and land cover in the region of Manaus, Amazonas state. We used a multipolarized image from sensor airborne SAR-R99B (L band), with 3 m spatial resolution. Were evaluated the MAXVER-ICM and SVM (Support Vector Machine) classifiers, where in all cases we used the images individually multipolarized amplitude (HH, HV and VV), in pairs (HH and HV), (HV and VV) and (HH and VV) and together (HH, HV and VV). The results were compared using as parameter the Kappa coefficient. The SVM classifier had higher accuracy compared to MAXVER-ICM classifier. The best classifications were obtained for the dual polarization (HH and VV) with MARVER-ICM classifier and (HH, HV and VV) with the SVM classifier both using the images with the filter. The accuracy was highest with SVM for classification and filter images (kappa = 0.7736). Were analyzed the influence of using GAMMA filter performance on the classifiers where it showed that filtered images have provided an increase in the results, on average, about 8%. Thus there was the analysis of the classification results, which found that the best result was provided by the dataset multipolarized (HH, HV and VV) classified by the SVM method. Thus, we concluded that the use of radar imagery in mapping thematic classes use and land cover in tropical regions, can be considered as a viable proposal.
Nas últimas décadas as áreas de floresta tropical na região Amazônica têm sido fortemente impactada por um rápido processo de conversão da cobertura vegetal em outros tipos de uso devido à ação antrópica. No contexto das mudanças globais, os mapeamentos e monitoramentos de uso e cobertura da terra fornecem subsídios para as análises e avaliações dos impactos ambientas em virtude de acelerados processos de mudança na paisagem. Neste contexto, este estudo avaliou o potencial dos dados de radar de abertura sintética para discriminação de uso e cobertura da terra na região de Manaus, estado do Amazonas. Foi utilizada uma imagem multipolarizada do sensor aerotransportado SAR-R99B (banda L), com 3 metros de resolução espacial. Realizaram-se classificações na imagem radar sem filtro e com filtro Gamma 3x3. Avaliou-se o classificador pontual MAXVER-ICM e o SVM (Support Vector Machine), onde em todos os casos utilizou-se das imagens multipolarizadas em amplitude individualmente (HH, HV e VV), aos pares (HH e HV), (HV e VV) e (HH e VV) e em conjunto (HH, HV e VV). Os resultados obtidos foram comparados utilizando-se como parâmetro o coeficiente de concordância Kappa. O classificador SVM apresentou acurácia superior em relação ao classificador MAXVER-ICM. As melhores classificações foram obtidas para a polarização dual HH e VV com o classificador MAXVER-ICM e (HH, HV e VV) com o classificador SVM ambos utilizando as imagens com filtro. A acurácia mais elevada foi para a classificação com SVM e imagens com filtro (kappa = 0,7736). Analisou-se a influência do uso de filtro GAMMA no desempenho dos classificadores onde se contatou que as imagens filtradas proporcionaram um incremento nos resultados, em média, na ordem de 8%. Deste modo realizou-se a análise dos resultados das classificações, onde se constatou que o melhor resultado foi proporcionado pelo conjunto de dados multipolarizados (HH, HV e VV)classificados através do método SVM. Assim, concluiu-se que o uso de imagens de radar no mapeamento de classes temáticas de uso e cobertura da terra, em regiões tropicais, pode ser considerado como uma proposta viável.
Shanley, Samantha Jane. "A glycopore for bacterial sensing". Thesis, University of Oxford, 2009. http://ora.ox.ac.uk/objects/uuid:06fe9bce-6bf2-4f61-b4d8-014cb9df3fc0.
Texto completoStephenson-Brown, Alexander James. "Synthetic sensors for saccharides and glycoproteins". Thesis, University of Birmingham, 2015. http://etheses.bham.ac.uk//id/eprint/5728/.
Texto completoPelleteret, Diane. "The synthesis of sensors". Thesis, Queen's University Belfast, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.479405.
Texto completoLeÌrida, Laura Cano. "New synthetic receptors for sensors for PAHs". Thesis, University of York, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.433998.
Texto completoBadr, Celine. "Synthesis of embedded software for sensor nodes". College Park, Md. : University of Maryland, 2006. http://hdl.handle.net/1903/3608.
Texto completoThesis research directed by: Dept. of Electrical and Computer Engineering. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.
Nadeau, Phillip Michel. "Ultra-low energy electronics for synthetic biological sensors". Thesis, Massachusetts Institute of Technology, 2016. http://hdl.handle.net/1721.1/107288.
Texto completoThis electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.
Cataloged from student-submitted PDF version of thesis.
Includes bibliographical references (pages 143-151).
Advances in microelectronics have contributed to the wide availability of wearable sensor nodes for vital signs monitoring. Without additional pieces however, electronics by themselves can perform only basic detection tasks. This work explores the "functionalization" of low-power low-cost microelectronics with equally inexpensive genetically engineered whole-cell microbial sensors to aid in sensing the chemical domain. The driving application is an ingestible sensor for bleeding detection in the gastrointestinal tract. First, we present in vivo measurements of energy-harvesting in the gastrointestinal tract in order to set a power budget for the proposed ingestible sensor. The harvester is based on metal electrodes that react with the stomach contents to generate energy. Here we demonstrate 0.23 [mu]W of average power per mm2 of electrode area delivered to a load for a mean of 6.1 days. Next, we present the design of an ultra-low energy relaxation oscillator. The oscillator can be used as a slow clock source for waking the ingestible sensor from sleep mode and for running slow analog measurements. The core oscillator uses an 18-transistor 3-stage architecture designed to minimize short circuit current and consumes only switching energy across a wide range of Vdd. At 0.6 V, the oscillator system consumes 230 fJ/cycle and can operate across a wide range of low frequencies from 18 Hz to 1000 Hz. Finally, we present the design of an ultra-low energy readout system for genetically engineered whole-cell biosensors. A time-based threshold-crossing scheme is used to quantify the low-intensity bioluminescence incident on the phototransistor detector. The system includes a 900 MHz transmitter, controller, and support electronics on the chip in order to demonstrate molecule-to-wireless-bits sensing on a nanowatt power budget. With the continued expansion of the Internet of Things, the concepts in this thesis can be used to further enhance the capabilities of low-cost microelectronics in the area of vital signs and physiological monitoring. By conferring the ability to sense small molecules using a synthetic biology foundation, new types of low-cost diagnostics can be envisioned for connected health monitoring.
by Phillip Michel Nadeau.
Ph. D.
Bove, V. Michael. "Synthetic movies derived from multi-dimensional image sensors". Thesis, Massachusetts Institute of Technology, 1989. http://hdl.handle.net/1721.1/64847.
Texto completoSoleimanpour, Amir Masoud. "Synthesis, Fabrication and Surface Modification of Nanocrystalline Nickel Oxide for Electronic Gas Sensors". University of Toledo / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1365071722.
Texto completoProvencher, Philip. "Synthesis and performance of an alkylating agent sensor". Thesis, University of British Columbia, 2014. http://hdl.handle.net/2429/50918.
Texto completoScience, Faculty of
Chemistry, Department of
Graduate
Skinner, Philip J. "Synthesis and application of cyclodextrin conjugates". Thesis, Durham University, 1999. http://etheses.dur.ac.uk/4542/.
Texto completoCordeiro, Juliana Ribeiro. "Síntese e aplicação de polímeros condutores em sensores olfativos". Universidade de São Paulo, 2010. http://www.teses.usp.br/teses/disponiveis/46/46135/tde-08112010-084724/.
Texto completoThe syntheses of three polymers via electrochemical reduction of their precursors are described. Two out of the three generated polymers have never been described before. An electronic nose was developed capable of identifying two pairs of wood species: (a) mahogany and cedar and (b) Brazilian walnut and black-cinnamon. The electronic nose consisted of four gas sensors, fabricated by the deposition of thin doped polymer films onto the surface of interdigitated electrodes. The device presented a rate of hits of 100% in 80 assays of identification of the above cited species. Finally, a gas sensor based on a conductive polymer and capable of acting as a pressure sensor was fabricated. The sensor was suitable for measuring air pressures in the range of 100 mmHg to 700 mmHg due to its sensibility to one or more specific compounds present in the air. The device is cheap, easy to fabricate and lasts for several months
Pahlke, Denis. "Synthesis, characterisation and sensor-functionalisation of transmembrane β-peptides". Doctoral thesis, Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2018. http://hdl.handle.net/21.11130/00-1735-0000-0003-C180-1.
Texto completoMa, Aihui. "Synthesis and characterization of miniaturized fluorescence sensors for aqueous and cellular measurements". ScholarWorks@UNO, 2005. http://louisdl.louislibraries.org/u?/NOD,240.
Texto completoTitle from electronic submission form. "A thesis ... in partial fulfillment of the requirements for the degree of Doctor of Philosophy in Chemistry."--Dissertation t.p. Vita. Includes bibliographical references.
Levonis, Stephan Michael. "Design and Synthesis of Boronolectin Fluorescence Sensors". Thesis, Griffith University, 2012. http://hdl.handle.net/10072/365998.
Texto completoThesis (PhD Doctorate)
Doctor of Philosophy (PhD)
Institute for Glycomics
Science, Environment, Engineering and Technology
Full Text
Brown, Stewart Jeffrey. "Synthesis and electrochemistry of functionalised polythiophenes for biological sensor applications". Thesis, University of Liverpool, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.402298.
Texto completoLewallen, Daniel M. "Development of synthetic carbohydrates for capturing toxins". University of Cincinnati / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1288969515.
Texto completoSousa, Raquel Maria Ferreira de. "Síntese e aplicação de oligômeros de poli(fluorenilenovinileno)". Universidade de São Paulo, 2008. http://www.teses.usp.br/teses/disponiveis/46/46135/tde-02072008-140803/.
Texto completoThere is a growing interest in investigating the phenomenon of magnetoresistance in various materials (both organic and inorganic), since it is directly linked to the manufacture of high capacity hard disk drives. Previous studies showed that the polymer PDO14FV presents magnetoresistance with higher intensity than inorganic materials. Therefore, this work consisted in the synthesis and characterization of two oligomers, the dimer (DO14FV-dim) and trimer (DO14FV-trim), of this polymer and the investigation of magnetoresistance in these materials. Surprisingly, these oligomers presented higher magnetoresistance than that exhibited by the polymer. These results may contribute in future works aiming the elucidation of the mechanism of this phenomenon in organic materials. The synthesis of the oligomers was performed by Wittig reaction. Molecules of well defined structure and trans configuration were obtained and characterized by spectroscopic methods. Aiming other applications, the oligomers and polymer were tested in gas sensors, for the discrimination between different types and brands of tea. It was observed that the greater the molecule, the greater the selectivity, and therefore, the polymer gave the best results.
Boehle, Matthew C. "Synthesis and Characterization of a Carbon Nanotube Based Composite Strain Sensor". University of Dayton / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1462201576.
Texto completoWalker, Brian Thomas. "Synthesis of Novel Antimycobacterials and a Fluorescent Sensor for Simple Carbohydrates". VCU Scholars Compass, 2006. http://scholarscompass.vcu.edu/etd/1340.
Texto completoHangarter, Carlos Maldonado. "Electrochemical synthesis of one-dimensional nanostructures for sensor and spintronic applications". Diss., [Riverside, Calif.] : University of California, Riverside, 2009. http://proquest.umi.com/pqdweb?index=0&did=1957308741&SrchMode=2&sid=1&Fmt=2&VInst=PROD&VType=PQD&RQT=309&VName=PQD&TS=1269278715&clientId=48051.
Texto completoIncludes abstract. Available via ProQuest Digital Dissertations. Title from first page of PDF file (viewed March 12, 2010). Includes bibliographical references. Also issued in print.
Song, Changsik. "Design and synthesis of molecular actuators and sensors". Thesis, Massachusetts Institute of Technology, 2007. http://hdl.handle.net/1721.1/41554.
Texto completoThis electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.
Includes bibliographical references.
To date, the most successful conducting polymer actuators are based on polypyrrole, which operates through incorporating and expelling counterions and solvent molecules to balance the charges generated by electrochemical stimuli (swelling mechanism). Although significant progress has been made, there still exists a need for developing new materials that would overcome the intrinsic limitations in the swelling mechanism, such as slow diffusion rate, limited expansion volume, etc. Our group has contributed this area with a different approach -- lecular mechanisms, which utilize a dimensional change of a single polymer chain. We propose two types of molecular mechanisms: contracting and expanding. We proposed earlier a calix[4]arenebased molecular actuator for the contracting mechanism, in which p-dimer formation was proposed as a driving force. In this dissertation, we first confirm by model studies that p-dimer formation can indeed be a driving force for the calix[4]arene-based system. We propose another molecular hinge, binaphthol moiety, for the contracting model. The syntheses of polymers with binaphthols and their characterization, including signatures of oligothiophene interactions, are described. Due to its chirality, we examined the possibilities of the binaphthol polymer as a chiral amine sensor. To create actuators that make use of the expanding model, we propose new conjugated seven-membered ring systems with heteroatoms (thiepin with sulfur and azepine with nitrogen) and their syntheses and characterization will be described. Inspired by the fact that sulfoxide has very low extrusion barrier in the related system, we applied the thiepin molecules to create a peroxide sensor.
(cont.) In addition, during the investigation of phenol functional groups in conducting polymers, we found interesting properties that strategic positioning of phenol groups can render a conjugation-broken meta-linked system just as conductive as a fully conjugated para-linked isomeric system.
by Changsik Song.
Ph.D.
La, Paglia Fragola Valentina. "Synthesis of chromo fluorogenic sensors for molecular recognition". Doctoral thesis, Università di Catania, 2012. http://hdl.handle.net/10761/960.
Texto completoVermillion, Rebecca Marie. "Synthesis of Multivalent Glycoconjugates for the Detection of Pathogens". University of Cincinnati / OhioLINK, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1153855510.
Texto completoBangcuyo, Carlito Ganayo. "Synthesis of Heterocyclic Poly(aryleneetheynylene)s". Diss., Georgia Institute of Technology, 2006. http://hdl.handle.net/1853/14011.
Texto completoKaur, Gurpreet. "Synthesis of Boronic Acid Based Sensors for Glucose and Sialic Acid and Synthesis of Novel and Selective PDE4 Enzyme Inhibitors". Digital Archive @ GSU, 2006. http://digitalarchive.gsu.edu/chemistry_diss/9.
Texto completoEsipenko, Nina A. "Design, Synthesis, and Application of Sensors for Biologically Relevant Molecules". Bowling Green State University / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1395589938.
Texto completoNavarrete, Gatell Eric. "Synthesis and gas sensing properties of inorganic semiconducting, p-n heterojunction nanomaterials". Doctoral thesis, Universitat Rovira i Virgili, 2021. http://hdl.handle.net/10803/672438.
Texto completoEn esta tesis utilizando principalmente Aerosol Assited Chemical Vapor Deposition, AACVD, como metodología de síntesis de óxido de tungsteno nanoestructurado se han fabricado diferentes sensores de gases. Para estudiar la mejora en la selectividad y la sensibilidad de los sensores de gases basados en óxido de tungsteno estos se han decorado, vía AACVD, con nanopartículas de otros óxidos metálicos para crear heterouniones para obtener un incremento en la sensibilidad electrónica, las propiedades químicas del material o bien ambas. En particular, se han trabajado en diferentes sensores de nanohilos de óxido de tungsteno decorados con nanopartículas de óxido de níquel, óxido de cobalto y óxido de iridio resultante en sensores con un gran incremento de respuesta y selectividad hacia el sulfuro de hidrógeno, para el amoníaco y para el óxido de nitrógeno respectivamente a concentraciones traza. Además, se han estudiado los mecanismos de reacción que tienen lugar entre las especies de oxígeno adsorbidas en la superficie del sensor cuando interactúa con un gas. Y también se ha trabajado en intentar controlar el potencial de superficie de las capas nanoestructuradas para controlar la deriva en la señal a lo largo del tiempo, cuando el sensor está trabajando, a través de un control de temperatura.
In this thesis, using mainly Aerosol Assited Chemical Vapor Deposition, AACVD, as a synthesis methodology for nanostructured tungsten oxide, different gas sensors have been manufactured. To study the improvement in the selectivity and sensitivity of gas sensors based on tungsten oxide, they have been decorated, via AACVD, with nanoparticles of other metal oxides to create heterojunctions to obtain an increase in electronic sensitivity, in the chemical properties of the material or at the same time in both. Particularly, we have worked on different tungsten oxide nanowire sensors decorated with nanoparticles of nickel oxide, cobalt oxide and iridium oxide resulting in sensors with a large increase in response and selectivity towards hydrogen sulfide, for ammonia. and for nitrogen oxide respectively at trace concentrations. In addition, the reaction mechanisms that take place between oxygen species adsorbed on the sensor surface when it interacts with a gas have been also studied. Furthermore, efforts have been put on trying to control the surface potential of the nanostructured layers to control the drift in the signal over time, when operating the sensors, through temperature control.
Hartigan, Hilary Jean Noelle. "New redox active ion sensors : synthetic, electrochemical, spectroscopic and guest binding studies". Thesis, University of Edinburgh, 2002. http://hdl.handle.net/1842/14012.
Texto completoPhillips, Marcus Damian. "Synthetic strategies in the design and construction of saccharide selective fluorescent sensors". Thesis, University of Bath, 2005. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.414605.
Texto completoBokolinis, Georgios. "The synthesis of novel ditopic ligands for supramolecular chemistry and sensor applications". Thesis, University of Huddersfield, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.430296.
Texto completoTang, Yin. "Synthesis and Characterization of Tin Oxide for Thin Film Gas Sensor Applications". Case Western Reserve University School of Graduate Studies / OhioLINK, 2004. http://rave.ohiolink.edu/etdc/view?acc_num=case1089995414.
Texto completoGan, Wei. "Synthesis and design of fluorescence ligands to act as sensor for zinc /". Electronic version (PDF), 2004. http://dl.uncw.edu/etd/2004/ganw/weigan.html.
Texto completoHillier, Stephen. "The design, synthesis and application of a novel electrochemical DNA gene sensor". Thesis, University of Bath, 2005. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.414787.
Texto completoBrown, Rachel Christine y rcbrown@adam com au. "gamma-Lactones in wine: Synthesis, quantification and sensory studies". Flinders University. School of Chemistry, Physics and Earth Sciences, 2007. http://catalogue.flinders.edu.au./local/adt/public/adt-SFU20080226.234630.
Texto completoLee, Hsiao-Yen. "Synthesis and characterization of nano-sructured materials for sensors". Thesis, University of Leeds, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.505052.
Texto completoWalker, Ashley. "One tone, two ears, three dimensions : an investigation of qualitative echolocation strategies in synthetic bats and real robots". Thesis, University of Edinburgh, 1997. http://hdl.handle.net/1842/535.
Texto completoYavuz, Mustafa Selman. "Synthesis of an Ammonium Ion-selective Fluoroionophore". Digital WPI, 2003. https://digitalcommons.wpi.edu/etd-theses/772.
Texto completoNur, Kamruddin Md. "Synthetic view of retail spaces using camera and RFID sensors on a robot". Doctoral thesis, Universitat Pompeu Fabra, 2016. http://hdl.handle.net/10803/352710.
Texto completoEn aquesta tesi, dos enfocaments de presentació de la informació a la vista d’interior s’han presentat mitjançant identificació per radio-freqüència (RFID) i sensors de la càmera en un robot. L’objectiu és capturar imatges de l’ambient interior i la creació d’una vista 3D, de manera que els usuaris poden veure, navegar i localitzar un producte a la vista. RFID és un ‘sistema’ Auto ID, que és capaç d’identificar un objecte etiquetat des d’una distància remota sense una línia de visió directa. Per altra banda, un sistema RFID pot ser configurat per adquirir ubicacions aproximades d’objectes RFID etiquetats. En el primer enfocament, s’han presentat una creació de vista interior com Google Street View i la projecció d’informació de productes obtinguts per RFID. I, en el segon enfocament, la projecció de la informació de productes obtinguts per RFID en una vista de núvol de punts 3D s’ha presentat usant un econòmic RGB-D (Red, Blue, Green, and Depth) sensor de càmera i RGB-D SLAM.
Xu, Guoxiang. "Environmental Remediation with Fenton Reagents and Synthesis of a Novel Halide Fluorescence Sensor". ScholarWorks@UNO, 2005. http://scholarworks.uno.edu/td/144.
Texto completoGunji, Shunsuke. "Synthesis of functional inorganic nanofibers using cellulose nanofibers as templates". 京都大学 (Kyoto University), 2017. http://hdl.handle.net/2433/225610.
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