Дисертації з теми "PCA AND DWT"
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RAWAT, URVASHI. "INFRARED AND VISIBLE IMAGE FUSION USING HYBRID LWT AND PCA METHOD." Thesis, DELHI TECHNOLOGICAL UNIVERSITY, 2021. http://dspace.dtu.ac.in:8080/jspui/handle/repository/18907.
Повний текст джерелаStrakoš, Libor. "Využití EEG ve vyhodnocování emocionálních stavů člověka." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2016. http://www.nusl.cz/ntk/nusl-241968.
Повний текст джерелаŠtens, Radovan. "Analýza obrazových dat funkční magnetické rezonance (fMRI)." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2010. http://www.nusl.cz/ntk/nusl-375489.
Повний текст джерелаRoset, Cazalda Mª Lourdes. "Estudi de la utilització dels mapes de potencial electrostàtic i de polarització com a descriptors moleculars." Doctoral thesis, Universitat Politècnica de Catalunya, 2011. http://hdl.handle.net/10803/51884.
Повний текст джерелаMolecular engineering is based on the knowledge of the stereoelectronic features that define the molecular recognition, which is the result of the complementarity of geometric and electronic features between two different molecular entities. The importance of different electrostatic contributions allows us to make a theoretical prediction of molecular properties, from calculations of electrostatic potential and molecular polarization. This work is based on the study of the use of maps of electrostatic potential and polarization potential as molecular descriptors. First there is a study of the effect of the basis set and the methodology used in the calculation of first and second order electrical properties. The analysis was carried out with the molecules of hydrogen cyanide, formaldehyde and urea. The base sets used are the standard double-zeta, to which were added polarization and diffuse functions. In particular, we have used the double zeta basis 6-31G (d), double zeta basis augmented with one or two sets of polarization functions: 6-31G (d, p), 6-31G (2d, 2p) and also used the base 6-311G + + (2d, 2p), which includes diffuse functions. The different levels of calculation methodologies used Hartree-Fock, Moller-Plesset second and fourth order and the theory of density functional (DFT): SCF, MP2, MP4, BLYP B3LYP i. We analyze the effect of different sets based on the contribution of polarization to the interaction energy, calculated for each system of first order properties, such as dipolar moments and quadrupolar moments, and second order properties such as polarizability and molecular hyperpolarizability. Further, the effect of the basis and method on the calculation of the electrostatic potential and molecular polarization potentials is evaluated. For this purpose we performed a comparative study of the maps calculated with different basis sets and methodologies, in particular a study of the spatial distribution and correlation analysis between the different data bases and methodologies was done. An analysis of molecular polarization maps by calculating the differences in polarization and relative standard deviation allows for a comparative study of different methodologies and bases used. Specifically, a comparative analysis between different methods of calculating the base 6-311G + + (2d, 2p), calculated by reference to the MP4 was done. We use maps of electrostatic, polarization and interaction potentials for the analysis of molecular recognition features of a set of bioactive compounds, to discuss the importance of the contribution of polarization. For this reason, we choose to study a set of molecules with high polarizability, specifically, two families of compounds with heavy atoms of chlorine and defined toxic activity, which are part of groups of dioxins and furans. A study of the polarization maps as indicators of biological activity of dioxins and furans, based on the best methodology is done. The inclusion of polarization as a molecular descriptor for predicting biological activity of dioxins and furans was studied from the calculation of electrostatic potentials and polarization, an analysis of the potential maps, and defining the main areas of interaction molecular electrostatic and polarization interaction from calculations of principal components (PCA) and the prediction of biological activity based on a study by calculation of partial least squares (PLS).
Šrenk, David. "Vizualizace spektroskopických dat pomocí metody analýzy hlavních komponent." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2019. http://www.nusl.cz/ntk/nusl-401532.
Повний текст джерелаThieullen, Alexis. "Méthodologie pour la détection de défaillance des procédés de fabrication par ACP : application à la production de dispositifs semi-conducteurs." Thesis, Aix-Marseille, 2014. http://www.theses.fr/2014AIXM4329.
Повний текст джерелаThis thesis focus on developping a fault detection methodology for semiconductor manufacturing equipment. The proposed approach is based on Principal Components Analysis (PCA) to build a representative model of equipment in adequat operating conditions. Our method exploits collected measurements from equipement sensors, for each processed wafer. However, regarding the industrial context and processes, we have to consider additional problems: collected signals from sensors exhibit different length, or durations. This is a limitation considering PCA. We have also to consider synchronization and alignment problems; semiconductor manufacturing equipment are almost dynamic, with strong temporal correlations between sensor measurements all along processes. To solve the first point, we developped a data preprocessing module to transform raw data from sensors into a convenient dataset for PCA application. The interest is to identify outliers data and products, that can affect PCA modelling. This step is based on expert knowledge, statistical analysis, and Dynamic Time Warping, a well-known algorithm from signal processing. To solve the second point, we propose a combination multiway PCA with the use of an EWMA filter to consider process dynamic. A recursive approach is employed to adapt our PCA model to specific events that can occur on equipment, e.g. maintenance, restart, etc.All the steps of our methodology are illustrated with data from a chemical vapor deposition tool exploited in STMicroelectroics Rousset fab. Finally, the efficiency and industrial interest of the proposed methodologies are verified by considering multiple equipment types on longer operating periods
Brychta, Jan. "Aplikace pro zpracování dat z oblasti genového inženýrství." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2008. http://www.nusl.cz/ntk/nusl-235899.
Повний текст джерелаTran, Van Nam. "Adsorption statique de PCB et de DDT sur charbons actifs en milieux aqueux." Thesis, Lyon 1, 2012. http://www.theses.fr/2012LYO10301.
Повний текст джерелаThe solid-liquid adsorption of PCBs and DDT is an effective process for the recuperation of wastewaters but a better understanding of the involved mechanism is required. In this study, the static adsorption kinetics were mainly carried out at 25 ° C for 2-PCB, a mixture of tetra-, penta-and hexa-CB, and 4,4 '-DDT onto three different powdered activated carbons (AC) of the precursor (coal, wood) and the activation mode (H2O, H3PO4) in water, with or without ethanol. The prominent results were as follows: The adsorption of the pollutant on the AC is favored if its solubility in the liquid phase is lower. As a result, the adsorption of the hydrophobic pollutant is significantly increased in pure water. Moreover, the adsorption of pollutants favored by the developed microporosity is a surface phenomenon which involved the Van der Waals forces. A good fit between the size of molecules and the average width of the slit-shape pores gave a maximum confinement of molecules in the micropores. The π−π interaction between adsorbate and adsorbent, favored by the number of Cl, is not excluded. Finally, by studying the kinetics of the initial conditions, we found that the adsorption is limited by the external mass transfer. The internal surface diffusion coefficients estimated from applying the homogeneous surface diffusion models (HSDM) showed that the adsorption kinetics are almost completely governed by the intra-particle diffusion
Ciro, Guido. "TD-DFT and TD-DFT/PCM approaches to molecular electronic excited states in gas phase and in solution." Doctoral thesis, Scuola Normale Superiore, 2011. http://hdl.handle.net/11384/85797.
Повний текст джерелаNechutová, Vendula. "Analýza chemických vazeb ve slitinách pomocí dolování dat." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2019. http://www.nusl.cz/ntk/nusl-402554.
Повний текст джерелаLegat, Leticiaà Nadine Alves. "Acumulação de compostos organoclorados (PCBs, DDTs e HCB) em tecido hepático de delfinídeos (Cetacea, Mammalia) do Estado do Rio de Janeiro." Universidade do Estado do Rio de Janeiro, 2011. http://www.bdtd.uerj.br/tde_busca/arquivo.php?codArquivo=2667.
Повний текст джерелаNo decorrer das últimas décadas a pesquisa relacionada à contaminação de organismos marinhos por compostos organoclorados (OCs) se intensificou aliada à utilização de algumas espécies como sentinelas da qualidade ambiental quanto aos poluentes orgânicos. Dentre essas espécies, podem-se destacar os cetáceos, animais que entre outras características possuem grande longevidade, alta porcentagem lipídica em seus tecidos e são predadores de topo de cadeia trófica, tendendo assim a acumular altos níveis de OCs em seus tecidos. O presente estudo teve por objetivo determinar as concentrações de OCs de origem industrial e agrícola (PCBs, HCB e DDTs) em tecido hepático de oito diferentes espécies de cetáceos delfinídeos pertencentes a três distintas áreas oceânicas do Estado do Rio de Janeiro, são elas a região costeira, a plataforma continental e a região oceânica. A determinação foi realizada em cromatógrafo a gás (GC - Agilent 6890) conectado a um espectrômetro de massa (MS - Agilent 5973). Os valores de DDTs (1263617272 ng.g -1 lip.) e PCBs (7648877288 ng.g -1 lip.) aqui encontrados estão entre os mais altos já reportados para o táxon. Em todas as áreas observou-se uma predominância do ΣPCB, seguida do ΣDDT e HCB, em níveis que refletem o caráter fortemente industrial da região analisada. Entre os PCBs, a maior contribuição advém dos hexabifenis, seguida dos hepta e pentabifenis, sendo os congêneres 153, 138 e 180 os principais em todas as áreas. A razão p,pDDE/ΣDp,pDDT foi alta em todas as regiões (0,9), refletindo um input antigo do poluente na área. Foram realizadas correlações entre as concentrações de OCs e os parâmetros biológicos das espécies, como idade, sexo e comprimento total. A transferência placentária de OCs foi analisada em dois pares de fêmea-feto de Sotalia guianensis, mostrando uma maior transferência dos compostos com menor log Kow. Como esperado, foi encontrada uma diferença significativa no perfil de contaminação entre as espécies das diferentes regiões, relacionada à proximidade da fonte, características espécie-específicas e ao arranjo trófico das espécies.
Over the past decades the research on marine organisms contamination by organochlorine compounds (OCs) has been intensified, allied to the utilization of some species as sentinels of the environmental quality related to organic pollutants. Among these species, cetaceans stand out as animals that, between other characteristics, have great longevity, high lipid percentage on their tissues and are top predators in food chains, therefore having the tendency to accumulate high OCs levels in their tissues. The present study aimed to determine OCs concentrations from industrial and agricultural sources (PCBs, HCB and DDTs) in hepatic tissue of eight different species of delphinid cetaceans belonging to three different oceanic areas of Rio de Janeiro State, namely, coastal region, continental shelf and oceanic region. The determination was performed in an Agilent 6890 gas chromatograph (GC) connected to an Agilent 5973 mass spectrometer (MS). DDTs (1263617272 ng.g -1 lip.) and PCBs (7648877288 ng.g -1 lip.) values reported here are amongst the highest values ever reported for the taxon. In all areas ΣPCB predominance was observed, followed by ΣDDT and HCB in levels that reflect the highly industrial character of the analyzed region. Amongst PCBs, the largest contribution comes from hexa biphenyls, followed by hepta and penta biphenyls, being the 153, 138 and 180 the main congeners in all areas. The p,pDDE/ΣDp,pDDT ratio was high in all regions (0,9), reflecting an ancient input of the pollutant in the area. Correlations between OCs concentrations and biologic parameters such as age, sex and total body lenght were performed. OCs placental transfer was analyzed in two Sotalia guianensis mother-fetus pairs, showing a higher transfer of compounds with lower log Kow. As expected, a significant difference was found on the contamination profile between species from the different regions, related to source proximity, species-specific characteristics and the species trophic arrangement.
Geschwinder, Lukáš. "Možnosti využití metod vícerozměrné statistické analýzy dat při hodnocení spolehlivosti distribučních sítí." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2009. http://www.nusl.cz/ntk/nusl-217824.
Повний текст джерелаRomanova, Yuliya. "Etude théorique et expérimentale de la structure, des propriétés magnétiques et de la conductivité des oligomères conjugués contenant de l'azote." Phd thesis, Université de Haute Alsace - Mulhouse, 2010. http://tel.archives-ouvertes.fr/tel-00666174.
Повний текст джерелаHadámek, Jakub. "Vysokorychlostní komunikační linka pro akvizici dat." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2020. http://www.nusl.cz/ntk/nusl-413262.
Повний текст джерелаJun, Yang. "Analysis and Visualization of the Two-Dimensional Blood Flow Velocity Field from Videos." Thesis, Université d'Ottawa / University of Ottawa, 2015. http://hdl.handle.net/10393/32539.
Повний текст джерелаVaněčková, Tereza. "Numerické metody pro klasifikaci metagenomických dat." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2016. http://www.nusl.cz/ntk/nusl-242014.
Повний текст джерелаFomiczew, Jiří. "Efektivní detekce síťových anomálií s využitím DNS dat." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2015. http://www.nusl.cz/ntk/nusl-234983.
Повний текст джерелаČípek, Radek. "VYTVOŘENÍ PROGRAMU PRO ZÁTĚŽOVÉ ZKOUŠKY EL.MOTORŮ-sběr dat ze systémů teplotních senzorů (RS232,USB,PCI DAQ) a výkonového analyzátoru (GPIB) v LabView." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2011. http://www.nusl.cz/ntk/nusl-229517.
Повний текст джерелаGuimarães, Thayso Silva. "Reconhecimento de face utilizando transformada discreta do cosseno bidimensional, análise de componentes principais bidimensional e mapas auto-organizáveis concorrentes." Universidade Federal de Uberlândia, 2010. https://repositorio.ufu.br/handle/123456789/14430.
Повний текст джерелаThe identification of a person by their face is one of the most effective non-intrusive methods in biometrics, however, is also one of the greatest challenges for researchers in the area, consisting of research in psychophysics, neuroscience, engineering, pattern recognition, analysis and image processing, computer vision and applied in face recognition by humans and by machines. The algorithm proposed in this dissertation for face recognition was developed in three stages. In the first stage feature matrices are derived of faces using the Two-Dimensional Discrete Cosine Transform (2D-DCT) and Two-Dimensional Principal Component Analysis (2D-PCA). The training of the Concurrent Self-Organizing Map (Csoma) is performed in the second stage using the characteristic matrices of the faces. And finally, the third stage we obtain the feature matrix of the image consulting classifying it using the CSOM network of the second step. To check the performance of face recognition algorithm proposed in this paper were tested using three well-known image databases in the area of image processing: ORL, YaleA and Face94.
A identificação de uma pessoa pela sua face é um dos métodos não-intrusivo mais efetivo em biometria, no entanto, também é um dos maiores desafios para os pesquisadores na área; consistindo em pesquisas em psicofísica, neurociência, engenharia, reconhecimento de padrões, análise e processamento de imagens, e visão computacional aplicada no reconhecimento de faces pelos seres humanos e pelas máquinas. O algoritmo proposto nesta dissertação para reconhecimento de faces foi desenvolvido em três etapas. Na primeira etapa são obtidas as matrizes características das faces utilizando a Two-Dimensional Discrete Cosine Transform (2D-DCT) e a Two-Dimensional Principal Component Analysis (2D-PCA). O treinamento da Concurrent Self-Organizing Map (CSOM) é realizado na segunda etapa usando as matrizes características das faces. E finalmente, na terceira etapa obtém-se a matriz característica da imagem consulta classificando-a utilizando a rede CSOM da segunda etapa. Para verificar o desempenho do algoritmo de reconhecimento de faces proposto neste trabalho foram realizados testes utilizando três bancos de imagens bem conhecidos na área de processamento de imagens: ORL, YaleA e Face94.
Mestre em Ciências
Antunes, Paulo José Freire. "Accumulation of PCB congeners and DDT compounds in fish: influence of size and reproductive cycle." Doctoral thesis, Instituto de Ciências Biomédicas Abel Salazar, 2008. http://hdl.handle.net/10216/9316.
Повний текст джерелаBurman, Maja, and Frida Clemborn. "PCK : – En litteraturstudie om pedagogical content knowledge samt hur det kopplas till lärare och matematikundervisningen." Thesis, Högskolan för lärande och kommunikation, Högskolan i Jönköping, Matematikdidaktik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-37049.
Повний текст джерелаAntunes, Paulo José Freire. "Accumulation of PCB congeners and DDT compounds in fish: influence of size and reproductive cycle." Tese, Instituto de Ciências Biomédicas Abel Salazar, 2008. http://hdl.handle.net/10216/9316.
Повний текст джерелаRundberg, Mattias. ""Det är ju bara att göra som vanligt, men i digital form" : IKT i det naturvetenskapliga klassrummet - en studie av lärares yrkesförmågor för att hantera det digitaliserade klassrummet." Thesis, Högskolan i Gävle, Utbildningsvetenskap, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-22683.
Повний текст джерелаJosefík, Martin. "Distribuovaný repositář digitálních forenzních dat." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2018. http://www.nusl.cz/ntk/nusl-385958.
Повний текст джерелаAlrasheed, Waleed. "Time and Space Efficient Techniques for Facial Recognition." Doctoral diss., University of Central Florida, 2013. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/6238.
Повний текст джерелаPh.D.
Doctorate
Electrical Engineering and Computer Science
Engineering and Computer Science
Electrical Engineering
Sperandio, Ricardo Carlini. "Time series retrieval using DTW-preserving shapelets." Thesis, Rennes 1, 2019. http://www.theses.fr/2019REN1S061.
Повний текст джерелаEstablishing the similarity of time series is at the core of many data mining tasks such as time series classification, time series clustering, time series retrieval, among others. Metrics to establish similarities between time series are specific in the sense that they must be able to take into account the differences in the values making the series as well as distortions along the timelines. The most popular similarity metric is the Dynamic Time Warping (DTW) measure. However, it is costly to compute, and using it against numerous and/or very long time series is difficult in practice. There has been numerous attempts to accelerate the DTW, yet, scaling DTW remains a major difficulty. An elegant research direction proposes to change the representation of time series such that it is much cheaper to establish similarities. This typically relies on an embedding process where vectorial representations of time series are constructed, allowing then to estimate their similarity using e.g. L2 distances, much faster to compute than DTW. Naturally, the quality of this representation largely depends on the embedding process, and the family of contributions relying on the concept of shapelets prove to work particularly well. Shapelets, and the transform operation materializing the embedding process, were originally proposed for time series classification. Shapelets are independent subsequences extracted or learned from time series to form discriminatory features. Shapelets are used to transform time series in high dimensional (Euclidean) vectors. Recently, it was proposed to embed time series into an Euclidean space such that the distance in this embedded space well approximates the true DTW. This contribution targets time series clustering. The work presented in this Ph.D. manuscript builds on the idea of transforming time series using shapelets. It shows how shapelets that preserve DTW measures can be used in the specific context of large scale time series retrieval. This manuscript is making major contributions: (1) it explains how DTW-preserving shapelets can be used in the specific context of time series retrieval; (2) it proposes some shapelet selection strategies in order to cope with scale, that is, in order to deal with extremely large collection of time series; (3) it details how to handle both univariate and multivariate time series, hence covering the whole spectrum of time series retrieval problems. The core of the contribution presented in this manuscript allows to easily trade-off the complexity of the transformation against the accuracy of the retrieval. Experiments using the UCR and the UEA datasets demonstrate the vast performance improvements compared to state of the art techniques
Musil, Martin. "Přenosy rastrových dat v FPGA." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2012. http://www.nusl.cz/ntk/nusl-236507.
Повний текст джерелаMIRANDA, Daniele de Almeida. "Bifenilas policloradas (PCBs) e pesticidas organoclorados em Scomberomorus cavalla: pescado de importância econômica na região metropolitana do Recife - PE." Universidade Federal de Pernambuco, 2015. https://repositorio.ufpe.br/handle/123456789/17047.
Повний текст джерелаMade available in DSpace on 2016-06-08T19:08:39Z (GMT). No. of bitstreams: 2 license_rdf: 1232 bytes, checksum: 66e71c371cc565284e70f40736c94386 (MD5) Daniele Miranda (Dissertação) (1).pdf: 2212174 bytes, checksum: 072adb47d6f470af0ef00119e299bcf8 (MD5) Previous issue date: 2015-08-26
CNPQ
Poluentes orgânicos persistentes (POPs) são ubíquos no ambiente global devido a grande estabilidade química e ampla dispersão. As características lipofílicas destes compostos favorecem a sua acumulação em peixes. Tais compostos estão associados ao desenvolvimento de câncer e desregulação do sistema endócrino. Apesar das proibições e restrições atribuídas a estes compostos, eles são frequentemente detectados no ambiente e a população humana está exposta a esta classe de contaminantes, principalmente, através do consumo de alimentos contaminados, como o pescado. O presente estudo teve como objetivos: (1) implementar metodologia para análise de PCBs e pesticidas organoclorados (DDTs, HCHs, clordanos, heptacloro e mirex) em peixe; (2) verificar a ocorrência de tais compostos em Scomberomorus cavalla; (3) investigar possíveis correlações entre os níveis de contaminantes e os parâmetros biológicos da espécie (idade, sexo, estágio de maturação e percentual de lipídios); e (4) estimar a exposição da população humana local a PCBs e DDTs através do consumo S. cavalla. Amostras de músculo e fígado foram separadas de 20 peixes adquiridos em colônias de pesca de Recife e região metropolitana. O método de extração foi Soxhlet (8 h), seguido por purificação com tratamento ácido. O extrato final foi analisado através de cromatografia em fase gasosa acoplada a espectrometria de massas (GC-MS). A metodologia para análise de organoclorados foi implementada e avaliada através de material de referência certificado. O limite de quantificação do método foi em média 0,50 ng g-1 peso seco (ps). PCBs e DDTs foram os grupos de compostos detectados em maiores concentrações nos espécimes estudados. As concentrações de PCBs, DDTs e clordanos no músculo variaram de 2,88 a 97,4 ng g-1 ps, 0,92 a 11,6 ng g-1 ps e nd (não detectado) a 2,11 ng g-1 ps, respectivamente. No fígado as concentrações desses contaminantes variaram de 47,5 a 267 ng g-1 ps, 7,95 a 34,8 ng g-1 ps e nd a 5,52 ng g-1 ps, respectivamente. HCHs, heptacloro e mirex não foram detectados nas amostras. Os parâmetros biológicos de S. cavalla não apresentaram correlação com as concentrações dos compostos estudados. A estimativa de ingestão diária de PCBs e DDTs pela população pernambucana mostrou que a cavala é uma espécie segura para consumo, segundo limites de referência propostos por agências da Organização das Nações Unidas (ONU).
Persistent organic pollutants (POPs) are ubiquitous worldwide due to high chemical stability and long-range atmospheric transport. Their lipophilic properties facilitate accumulation in fish tissues. POPs have been associated with development of cancer and endocrine disruption in vertebrates. Despite the ban in most countries, they are still detected in the environment. Human populations are exposed to POPs mainly through consumption of contaminated food including fish. The aim of this study is four-fold: (1) to optimize a laboratory method for analyzing polychlorinated biphenyls (PCBs) and chlorinated pesticides (DDTs, HCHs, chlordane, heptachlor and mirex) in fish tissues; (2) to investigate the occurrence of chlorinated compounds in king mackerel (Scomberomorus cavalla); (3) to assess potential correlations between contaminant levels and biological parameters of king mackerel; and (4) to estimate exposure of local human populations to PCBs and DDTs through consumption of king mackerel. A total of 20 fishes were purchased from artisanal fishermen at Recife and metropolitan area, northeastern Brazil. Muscle and liver tissues were selected for analysis. Samples were Soxhlet-extracted for 8 h and cleaned up with concentrated sulfuric acid. The extracts were injected into a gas chromatography-mass spectrometry system (GC-MS). The laboratory method was validated with certified reference material. The average limit of quantitation was 0.50 ng g-1 dry weight (dw). PCBs and DDTs were the major contaminants found in the samples while HCHs, heptachlor and mirex were not detected. Concentrations of PCBs, DDTs and chlordane-related compounds in muscle ranged from 2.88 to 97.4 ng g-1 dw, 0.92 to 11.6 ng g-1 dw, and nd (not detected) to 2.11 ng g-1 dw, respectively. Concentrations of the same contaminants in liver ranged from 47.5 to 267 ng g-1 dw, 7.95 to 34.8 ng g-1 dw, and nd to 5.52 ng g-1 dw, respectively. Biological parameters of S. cavalla were not significantly correlated with contaminant levels. The local population estimated daily intake of PCBs and DDTs through fish consumption revealed that S. cavalla is a safe food. Such a conclusion is based on reference limits established by the United Nations (UN) specialized agencies.
Johansson, Maria. "Interaction of Xenobiotics with the Glucocorticoid Hormone System in vitro." Doctoral thesis, Uppsala : Acta Universitatis Upsaliensis : Univ.-bibl. [distributör], 2002. http://publications.uu.se/theses/91-554-5321-X/.
Повний текст джерелаMelkes, Miloslav. "BigData řešení pro zpracování rozsáhlých dat ze síťových toků." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2014. http://www.nusl.cz/ntk/nusl-236039.
Повний текст джерелаBerglund, Josefin, and Kaisa Hasselquist. "Fonologi hos svenska 5- och 6-åringar med typisk språkutveckling : Referensmaterial till det fonologiska testmaterialet LINUS." Thesis, Linköpings universitet, Logopedi, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-109068.
Повний текст джерелаEtt nytt fonologiskt testmaterial, LINUS, är framtaget för svensktalande barn. I föreliggande studie har referensmaterial till den långa versionen av det nya testet insamlats bland barn 5-7 år i en mellanstor kommun i norra Kalmar län. Totalt deltog 124 barn (58 flickor och 66 pojkar) med svenska som modersmål och typisk språkutveckling. Barnen delades upp i två åldersintervall, 5;0-5;11;31 och 6;0-6;11;31 år. Det insamlade materialet analyserades avseende etablering av fonem och konsonantkombinationer, samt förekomst av ordstrukturprocesser. Andelsmått för korrekt uttalade ord (PWC), konsonanter (PCC) och vokaler (PVC) beräknades.Samtliga fonem, utom /s/, var etablerade i båda åldersgrupperna. Fonemet /s/ realiserades med substitutioner eller kvalitativt marginella avvikelser (KMA). I 5-årsgruppen var /s/ etablerat för 84% av deltagarna. Bland 5-åringarna förekom substitutioner av /s/ hos 7% och KMA förekom hos 23%. I 6-årsgruppen var /s/ etablerat till 88%, och det förekom substitutioner hos 3% av 6-åringarna, och KMA förekom hos 16%. Fonemet /r/ visade sig vara ett gränsfall avseende etablering för den yngre åldersgruppen (91%). Den vanligaste ordstrukturprocessen för båda grupperna var assimilationer. Signifikanta skillnader mellan de två åldersgrupperna återfanns avseende assimilationer, p=0,022. Förekomsten av assimilationer minskade med stigande ålder. Tvåkonsonantskombinationer (CC) och trekonsonantskombinationer (CCC) visade sig ej vara påverkade av förenklingar i någon större grad. Dock visade sig CC-kombinationer vara mer utsatta för förenklingar än CCC-kombinationer. Båda åldersgrupperna hade höga andelar korrekt uttalade ord, konsonanter och vokaler. De två grupperna fick följande resultat: PWC för 5-åringar var 93% och 6-åringar 97%. PCC var 98% respektive 99% för grupperna. PVC var 100% för båda åldersgrupperna. Åldersskillnader kunde ses för PWC, dock inte för de andra måtten. Inga könsskillnader noterades.
Nagazi, Mohamed Yassine. "Cartographie de la dynamique microscopique dans la matière molle sous sollicitation." Thesis, Montpellier, 2017. http://www.theses.fr/2017MONTS083.
Повний текст джерелаIn this thesis, we introduce a "multi-scale" characterization of soft matter based on novel setups that couple macroscopic measurements (temperature, force, deformation) to measurements of the microscopic dynamics. In a first series of experiments, we use a recently introduced optical method, space-resolved diffusion wave spectroscopy (PCI-DWS), to follow the microscopic dynamics of fat materials during a temperature ramp. This allows us to detect phase transitions and to localize them in space for heterogeneous samples. In a second series of experiments, the same optical method is coupled to mechanical measurements performed on a commercial universal traction machine. For a semi-crystalline polymer, we measure by PCI-DWS the mesoscopic deformation field under tension, with no need to pre-treat the sample surface as in conventional imaging methods. For the same polymer, we measure the microscopic dynamics during tensile stress relaxation tests, both in the linear and non-linear regime. We find a remarkably simple relationship between the microscopic dynamics and the macroscopic stress relaxation, and propose a simple model to rationalize it. In the last part of the thesis, we have designed and implemented a setup prototype to measure simultaneously the microscopic dynamics (by PCI-DWS), the force and the deformation during tensile tests on elastomers. Thanks to this apparatus, we unveil dynamic precursors preceding by thousands of seconds anymicroscopic sign of the incipient material failure
Johansson, Kim. "”Överskott, är det ämnet som får stå i hörnet och vänta” En studie på hur lärarens intentioner uppfattas av eleverna." Thesis, Högskolan i Halmstad, Sektionen för lärarutbildning (LUT), 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-21404.
Повний текст джерелаPandolfi, Lorenzo. "Studio mediante spettroscopia vibrazionale di foto-dimerizzazioni [2+2] in cristalli molecolari." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2019. http://amslaurea.unibo.it/19237/.
Повний текст джерелаLinderholm, Linda. "Assessment of Environmental Pollutants in Humans from Four Continents : Exposure levels in Slovakia, Guinea-Bissau, Nicaragua and Bangladesh." Doctoral thesis, Stockholms universitet, Institutionen för material- och miljökemi (MMK), 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-43807.
Повний текст джерелаAt the time of doctoral defense, the following papers were unpublished and had a status as follows: Paper 5: Manuscript. Paper 6: Manuscript.
Hansson, Tomas. "Biomarkers in perch (Perca fluviatilis) used in environmental monitoring of the Stockholm recipient and background areas in the Baltic Sea." Doctoral thesis, Stockholms universitet, Institutionen för tillämpad miljövetenskap (ITM), 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-8143.
Повний текст джерелаNystrom, Ingemar, and Tim Gatton. "RANGE UPGRADE FOR DATA RECORDING AND REPRODUCTION." International Foundation for Telemetering, 2000. http://hdl.handle.net/10150/608296.
Повний текст джерелаFlexible data multiplexing that supports both low-speed (4 Mbps) to very high-speed output devices (networks and recording systems up to 480 Mbps), along with data network formatting, can greatly enhance the results of range upgrading.
Schultz, Anna-Sara. "Upptag av fosfor, dioxiner och DL-PCB i sjön Vättern : En studie över fritidsfisket och det kommersiella fisket av signalkräfta, röding och sik." Thesis, Högskolan i Skövde, Institutionen för biovetenskap, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:his:diva-19017.
Повний текст джерелаSöderström, Maria. "Local and global contaminants in Swedish waters : studies on PCBs, DDTs, 4,5,6-trichloroguaiacol and their transformation products in fish and sediments." Doctoral thesis, Stockholms universitet, Institutionen för miljökemi, 2002. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-104291.
Повний текст джерелаAt the time of the doctoral defense, the following papers were unpublished and had a status as follows: Paper 4: Submitted. Paper 6: Manuscript.
Matos, Maria Auxiliadora Costa. "Resíduos de pesticidas organoclorados e bifenilos policlorados em sedimentos e algas de Santos e Cananéia, SP, Brasil." Universidade de São Paulo, 2002. http://www.teses.usp.br/teses/disponiveis/46/46133/tde-30082018-150911/.
Повний текст джерелаPolychlorinated biphenyls and chlorinated pesticides are degradation resistant pollutants. They have been detected in several compartments of marine environment. The objective of this study was the optimization of the methodology and the evaluation of the contamination of chlorinated pesticides and PCBs em algae and coastal sediments in the Estuary and Bay of Santos-São Vicente and in the Lagunar Complex of Iguape and Cananéia (SP). An amount of 37 samples of superficial sediment, 3 cores with 27 subsamples and 10 samples of algae was collected in the period of 1998-2001. The methodology was considered satisfactory within international standards, that includes extraction and clean up with organic solvents and analysis with GC-ECD. In the Cananéia-Iguape region, DDTs were predominant and the highest levels were found around the city of Cananéia and in Trapandé Bay. In the Santos area, the PCBs were predominant and the highest values were found around the Santos Bay outfall and in the Estuary of Santos-São Vicente. In general, either the concentrations of PCBs or chlorinated pesticides in Santos and Cananéia-Iguape were low. Santos presented higher incidence of PCBs, probably due to industrialization, while in Cananéia-Iguape the chlorinated pesticides predominated, and that can be attributed to past public health campaigns or to agricultural uses.
Hejl, Zdeněk. "Rekonstrukce 3D scény z obrazových dat." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2012. http://www.nusl.cz/ntk/nusl-236495.
Повний текст джерелаParameswaran, Sreeja. "Solar Energy Conversion in Plants and Bacteria Studied Using FTIR Difference Spectroscopy and Quantum Chemical Computational Methodologies." Digital Archive @ GSU, 2009. http://digitalarchive.gsu.edu/phy_astr_diss/32.
Повний текст джерелаBadin, Pavel. "Návrh rychlé měřící karty s využitím programovatelných hradlových polí." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2013. http://www.nusl.cz/ntk/nusl-219942.
Повний текст джерелаKarkaba, Alaa. "Effets neurotoxiques et multigénérationnels d’une exposition périnatale aux faibles doses de polychlorobiphényles non-dioxin-like indicateurs (PCB-NDLi) dans un modèle murin." Thesis, Université de Lorraine, 2017. http://www.theses.fr/2017LORR0295/document.
Повний текст джерелаIn this study, we evaluated the multigenerational neurotoxic effects of gestational and lactational exposure of F0 female mice to a representative mixture of the six indicator non-dioxin-like-polychlorinated biphenyls (NDL-PCBs) at environmentally low doses, a profile that closely mimics human exposure to contaminated fish. The tolerable day intake (TDI) of 10 ng/kg/day and a higher environmental dose of 1000 ng/kg/day were administered by free access to F0 mothers during pregnancy and lactation. Afterwards, the development and behavior, including emotional responses and social interactions, of the two F1 and F2 generations of Swiss male and female mice at different phases of their ontogenesis, were assessed. Depending on the mode of exposure of F1 parents to PCBs, four F2 generation groups were obtained by crossing (i) F1 fathers perinatally exposed with unexposed F1 mothers, (ii) F1 mothers perinatally exposed with unexposed F1 fathers, (iii) both F1 parents perinatally exposed, or (iv) both F1 parents perinatally unexposed (controls), to PCBs. Our results showed that F1 adult males showed depressive-like behavior whereas F2 adult males, coming from F1 mothers, perinatally exposed to PCBs, exhibited anti-depressive-like behavior. This result suggested an induction of a multigenerational alteration that was of parental origin, on the resignation behavior in a sex-dependent manner. Similarly, sex-selective anxious behavior was detected in F1 middle-aged males perinatally exposed to PCBs, which was transmissible to F2 middle-aged males, via their F1 fathers. Furthermore, a multigenerational alteration of social behavior was found in F1 and F2 male and female mice. Remarkably, some behavioral alterations in F2 generation were found, despite of the absence of effects in their F1 parents, such as a significant decrease in the level of preference for social novelty in F2 male mice, coming from F1 mothers perinataly exposed to 10 ng/kg of NDL-PCBs. The biomarker assays in F1 middle-aged mice revealed an alteration in many biochemical markers, including increased corticosterone levels and acetylcholinesterase activity in male as well as females
Arumugam, Krishnamoorthy. "Redox chemistry of actinyl complexes in solution : a DFT study." Thesis, University of Manchester, 2012. https://www.research.manchester.ac.uk/portal/en/theses/redox-chemistry-of-actinyl-complexes-in-solution-a-dft-study(ff09f316-847e-498e-a046-1db7bb4c6758).html.
Повний текст джерелаBráblík, Radim. "Datalogger pro sběrnici typu Profibus." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2010. http://www.nusl.cz/ntk/nusl-218374.
Повний текст джерелаOrtiz, Almirall Xavier. "Eliminació de contaminants orgànics persistents d’oli de peix." Doctoral thesis, Universitat Ramon Llull, 2011. http://hdl.handle.net/10803/31962.
Повний текст джерелаEn la presente tesis doctoral se han estudiado diversos métodos para la eliminación de contaminantes orgánicos persistentes en aceites de pescado con finalidad alimentaria. Se han desarrollado los métodos de análisis necesarios para la correcta determinación de estos compuestos en la matriz de estudio. Se han evaluado con detalle las etapas de purificación de la muestra, fraccionamiento de los analitos y análisis instrumental. El método ha sido validado con resultados satisfactorios, y se ha comprobado su buen funcionamiento mediante ejercicios de intercalibraje, así como la realización de diversos estudios con muestras reales de aceite de pescado. Se ha estudiado la eliminación de los contaminantes persistentes mediante adsorbentes sólidos con base silícica y carbonacea. Las condiciones experimentales han estado estudiadas en profundidad mediante diseños de experiencias y de evolución. Los mejores resultados se han obtenido con carbón activo, que demuestra una elevada eficacia en la eliminación de PCDD/Fs, dl-PCBs y HCB. Se ha estudiado la eliminación de los contaminantes orgánicos persistentes mediante técnicas de degradación fotoquímica. Inicialmente se ha fotodegradado cada familia de contaminantes por separado, para poder estudiar más a fondo las condiciones necesarias para su eliminación. Posteriormente se ha estudiado la degradación simultánea de los analitos de interés en aceite de pescado. Esta técnica se ha mostrado efectiva en la eliminación de DDT, PBDEs, HCB y PCBs similares a dioxinas. Paralelamente a los estudios de eliminación mediante adsorbentes sólidos y técnicas fotoquímicas, se ha comprobado la calidad de los aceites de pescado antes y después del tratamiento. El proceso de adsorción en sólidos no afecta significativamente a la calidad del aceite, mientras que las técnicas fotoquímicas degradan una parte de los ácidos grasos insaturados. Se ha estudiado la eliminación de contaminantes orgánicos persistentes en aceites de pescado mediante la combinación de las dos técnicas estudiadas anteriormente, con una primera etapa de degradación fotoquímica y una segunda etapa de adsorción. Se han comparado los resultados finales de eliminación que se obtienen con cada uno de los métodos desarrollados. La adsorción en carbón activo es el proceso más adecuado para la eliminación de COPs en aceite de pescado. Se ha realizado un estudio de los niveles diastereoisoméricos y enantioméricos de un contaminante emergente –HBCD- en aceite de pescado. Se ha evaluado su capacidad de eliminación de la matriz de estudio mediante adsorbentes con base carbonacia y degradación fotoquímica, siendo principalmente eliminado por la segunda vía.
During the present doctoral thesis several methods for the elimination of persistent organic pollutants from fish oil have been studied. Analytical methodologies for the determination of these compounds in fish oil have been developed. Sample purification, fractionation of the analytes and instrumental determination steps have been deeply studied. The method has been validated with satisfactory results, and its performance has been verified through its participation in several intercalibration exercises and studies with real fish oil samples. Elimination of persistent organic pollutants with silicon and carbon-based adsorbents has been studied. The experimental conditions have been studied in depth with an experimental design, to finally optimize the adsorption method using an evolutionary design. Best results have been obtained with the active carbon, showing high efficiency of the removal of PCDD/Fs, dioxin-like PCBs and HCB. Elimination of persistent organic pollutants with photochemical degradation techniques has been studied. Initially, each family of pollutants has been photodegraded separately, to determine its degradation conditions, as well as degradation mechanisms and by-products. Later, simultaneous photodegradation of the analytes has been studied in fish oil. This technique has shown high efficiency on the degradation of DDT, PBDEs, HCB and dioxin-like PCBs. The quality of the oils before and after the treatments with solid adsorbents and photochemical degradation has also been studied. The adsorption process does not significantly affect the quality of the oils, while photochemical techniques can degrade the unsaturated fatty acids. Elimination of persistent organic pollutants in fish oil combining adsorption in solids and photochemical degradation has been studied. Results obtained with each of the developed methodologies (adsorption, photodegradation and combined method) were compared. Adsorption in active carbon is the most suitable process for COPs elimination in fish oil. Finally, diastereoisomeric and enantiomeric levels of an emerging pollutant –hexabromocyclododecane (HBCD)- in fish oil have been studied. Its elimination has been evaluated with carbon-based adsorbents and photochemical degradation, being mainly eliminated with the photodegradation techniques.
Rönn, Monika. "Environmental Contaminants and Obesity." Doctoral thesis, Uppsala universitet, Arbets- och miljömedicin, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-209807.
Повний текст джерелаVidal, Lara Gama. "O uso do boto-cinza (Sotalia guianensis) como sentinela da poluição continental por compostos organoclorados (DDT, PCB, HCH, HCB e Mirex) em baías costeiras do Estado do Rio de Janeiro." Universidade do Estado do Rio de Janeiro, 2010. http://www.bdtd.uerj.br/tde_busca/arquivo.php?codArquivo=2787.
Повний текст джерелаConcentrações de compostos organoclorados (DDTs, PCBs, HCHs, Mirex e HCB) foram determinadas em camadas externas e internas do tecido adiposo subcutâneo de 17 botos-cinza (Sotalia guianensis) da região Sudeste do Brasil. Não houve diferenças estatísticas significativas entre os estratos, relativo aos 37 compostos determinados, assim como ΣDDT, ΣPCB, ΣHCH, e as razões p,p-DDE/ΣDDT e ΣDDT/ΣPCB. Entretanto, foram observadas diferenças significativas nas concentrações de alguns compostos organoclorados de animais encalhados ou capturados acidentalmente quando comparados com animais biopsiados remotamente, sendo assim as comparações entre esses dois conjuntos de dados, devem ser vistas com cuidado. No presente estudo, as concentrações dos compostos organoclorados foram determinadas em biópsias de botos-cinza obtidas de 2007 a 2009, nas baías de Sepetiba (n=13) e Ilha Grande (n=11), Sudeste do Brasil. As concentrações (ng/g de lipídio) variaram de
Madishetty, Suresh. "Design of Multi-Beam Hybrid Digital Beamforming Receivers." University of Akron / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=akron1545178805415923.
Повний текст джерела