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Dissertations / Theses on the topic 'Ocean synthesis'

Author: Grafiati
Published: 2 June 2025
Last updated: 31 July 2025

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1

Renaudie, Johan. "A synthesis of Antarctic Neogene radiolarians." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät I, 2014. http://dx.doi.org/10.18452/16985.

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Der Südozean ist die Schlüsselregion zur Kenntnis der neogenen Klimaentwicklung. In diesem Zusammenhang ist die Untersuchung von planktonischen Gemeinschaften in Hinblick auf die Umweltentwicklung von großer Bedeutung. In antarktischen neogenen Sedimenten sind Radiolarien reichlich, in großer Diversität und einheitlich gut erhalten. Sie sind nicht nur perfekte Testobjekte für paläobiologischen Studien, sondern auch eine wichtige Quelle für eine verbesserte Biostratigraphie – bisher behinderte nämlich das Fehlen einer verlässlichen Geochronologie detaillierte Studien. Es wurde ein Datensatz al
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2

North, Jan Arthur. "Fourier image synthesis and slope spectrum analysis of deepwater, wind-wave scenes viewed at Brewster's angle /." Online version of thesis, 1989. http://hdl.handle.net/1850/11520.

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3

Plata, Desirée L. "Carbon nanotube synthesis and detection : limiting the environmental impact of novel technologies." Thesis, Massachusetts Institute of Technology, 2009. http://hdl.handle.net/1721.1/53118.

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Thesis (Ph. D.)--Joint Program in Oceanography/Applied Ocean Science and Engineering (Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering; and the Woods Hole Oceanographic Institution), 2009.<br>Includes bibliographical references.<br>Driven by commercial promise, the carbon nanotube (CNT) industry is growing rapidly, yet little is known about the potential environmental impacts of these novel materials. In particular, there are no methods to detect CNTs in environmental matrices (e.g.,sediment) and thus, there is no way to study their transport or gauge ecologi
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4

Walden, Aleksi. "SMOS satellite hardware anomaly prediction methods based on Earth radiation environment data sets." Thesis, Luleå tekniska universitet, Rymdteknik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-59789.

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SMOS (Soil Moisture and Ocean Salinity) is ESA's Earth Explorer series satellite carrying the novel MIRAS (Microwave Imaging Radiometer with Aperture Synthesis) interferometric synthetic aperture radar. Its objective is monitoring and studying the planet's water cycle by following the changes in soil moisture levels and ocean surface salt concentrations on a global scale. The success of the mission calls for nearly uninterrupted operation of the science payload. However, the instrument experiences sporadically problems with its hardware, which cause losses of scientific data and may require in
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Boussidi, Brahim. "Textural-based methods for image superresolution : Application to Satellite-derived Sea Surface Temperature imagery." Thesis, Télécom Bretagne, 2016. http://www.theses.fr/2016TELB0404/document.

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La caractérisation des dynamiques de sous-mésoéchelle (&lt;10km) à la surface de l'océan et leurs impacts sur les processus océaniques globaux sont des enjeux scientifiques majeurs. L'imagerie satellitaire est un outil essentiel dans ce contexte, qui présente toutefois des limitations liées aux instruments de télédétection. Dans le cas des images de température de surface des océans (SST), les mesures satellitaires des structures océaniques sont limitées par la résolution grossière des capteurs micro-ondes (~50km) d'une part, et par la sensibilité aux conditions climatiques (e.g., couverture n
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6

Marom, Moshe. "Interferometric SAR imaging of ocean surface currents and wavefields." Thesis, Monterey, Calif. : Naval Postgraduate School, 1990. http://handle.dtic.mil/100.2/ADA239312.

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Dissertation (Ph.D. in Physical Oceanography)--Naval Postgraduate School, June 1990.<br>Dissertation supervisor: Thornton, E.B. "June 1990." Description based on title screen as viewed on 19 October 2009. DTIC Identifiers: INSAR (INTERFEROMETRIC SAR). Author(s) subject terms: Interferometric SAR, scene coherence time, 2D wavenumber spectra, surface currents. Includes bibliographical references (p. 192-198). Also available in print.
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Horstmann, Jochen. "Measurement of ocean wind fields with synthetic aperture radar." [S.l. : s.n.], 2001. http://deposit.ddb.de/cgi-bin/dokserv?idn=965193853.

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8

Rolt, Kenneth D. "Ocean, platform, and signal processing effects on synthetic aperture sonar performance." Thesis, Massachusetts Institute of Technology, 1990. http://hdl.handle.net/1721.1/13853.

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9

Meyer, Rory George Vincent. "Classification of ocean vessels from low resolution satellite SAR images." Diss., University of Pretoria, 2005. http://hdl.handle.net/2263/66224.

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In the long term it is beneficial to a country's economy to exploit the maritime environment surrounding it responsibly. It is also beneficial to protect this environment from poaching and pollution. To achieve this the responsible parties of a country must have an awareness of what is transpiring in the maritime domain. Synthetic aperture radar can provide an image, regardless of weather or light conditions, of the ocean showing most vessels therein. To monitor the ocean, using synthetic aperture radar imagery, at the lowest cost would require large swath synthetic aperture radar imagery. The
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10

Cook, Daniel A. "Synthetic Aperture Sonar Motion Estimation and Compensation." Thesis, Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/14538.

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Synthetic aperture sonar (SAS) is the underwater acoustic counterpart to stripmap-mode synthetic aperture radar (SAR). Current seagoing SAS systems are deployed on unmanned robotic vechicles, commonly referred to as autonomous underwater vehicles (AUVs). As with SAR, SAS imaging is ideally done with a straight-line collection trajectory. However, SAS is far more susceptible to image degradation caused by the actual sensor trajectory deviating from a pefectly straight line. Unwanted motion is virtually unavoidable in the sea due to the influence of currents and wave action. In order to co
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11

Kambanis, Leonidas M. Th. "Assessing high speed waterborne (HSW) services, based on synthetic aspects of route characteristics, transport economy, and vessel performance." Thesis, Massachusetts Institute of Technology, 1995. http://hdl.handle.net/1721.1/36092.

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12

Vachon, Paris W. "Synthetic-aperture radar imaging of the ocean surface : theoretical considerations, and experiments with simulated and actual SAR imagery." Thesis, University of British Columbia, 1987. http://hdl.handle.net/2429/27556.

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Three key areas of controversy in synthetic-aperture radar (SAR) imaging of ocean surface waves are considered: first, the nature of Bragg scattering; second, the role, magnitude, and calculation of the scene coherence time; and third, the relevant ocean wave velocities for coherent Doppler modulations. This work begins with a re-derivation and extension of existing SAR imaging theory for point and diffuse targets. Generic, relatively simple, closed-form expressions for the impulse response, the resolution, and the image bandwidth summarize this unified treatment. Theoretical differences betw
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13

Griffith, David R. (David Richmond). "Natural and synthetic estrogens in wastewater treatment plant effuent and the coastal ocean." Thesis, Massachusetts Institute of Technology, 2013. http://hdl.handle.net/1721.1/85824.

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Thesis: Ph. D., Joint Program in Oceanography/Applied Ocean Science and Engineering (Massachusetts Institute of Technology, Department of Civil and Environmental Engineering; and the Woods Hole Oceanographic Institution), 2013.<br>Pages 181 and 182 blank. Cataloged from PDF version of thesis.<br>Includes bibliographical references.<br>Steroidal estrogens are potent endocrine disrupting chemicals that are naturally excreted by vertebrates (e.g., humans and fish) and can enter natural waters through the discharge of treated and raw sewage. Because estrogens are detrimental to aquatic organisms a
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14

BIEN-AIME, MOMPLAISIR ROBERTE. "Contribution a l'etude geologique de la partie orientale du massif de la hotte (presqu'ile du sud d'haiti) : synthese structurale des marges de la presqu'ile a partir de donnees sismiques." Paris 6, 1986. http://www.theses.fr/1986PA066618.

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15

Fearon, Giles. "Extreme wind speeds for the South-West Indian Ocean using synthetic tropical cyclone tracks." Thesis, Stellenbosch : Stellenbosch University, 2014. http://hdl.handle.net/10019.1/96075.

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Thesis (MScEng)--Stellenbosch University, 2014.<br>ENGLISH ABSTRACT: Tropical cyclones are synoptic scale rotating storms capable of generating intense wind speeds and rainfall with potentially devastating social and economic consequences. In addition to abnormally high winds and rainfall, the associated storm surge and extreme waves can lead to severe coastal erosion, damage to coastal property and inundation. A good understanding of the risk exposure to these events is therefore of great importance to planners and designers of coastal infrastructure in vulnerable regions. Probabilistic appr
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16

Li, Huimin. "Global observations of ocean surface winds and waves using spaceborne synthetic aperture radar measurements." Thesis, Ecole nationale supérieure Mines-Télécom Atlantique Bretagne Pays de la Loire, 2019. http://www.theses.fr/2019IMTA0138/document.

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Les radars à synthèse d'ouverture (SAR) spatioportés ont fait la preuve de leur valeur inestimable dans l'observation des vents et des vagues océaniques mondiaux. Les images SAR acquises par plusieurs capteurs sont utilisées, notamment Sentinel-1 (S-1), Envisat/ASAR, Gaofen-3 et Radarsat-2. Cette thèse passe en revue les paramètres SAR couramment utilisés dans la première partie. Une série d'étapes d'étalonnage sont nécessaires pour obtenir un NRCS approprié et une évaluation du NRCS est effectuée pour le mode d'onde S-1 (WV). Il s'avère que WV est mal calibré et est donc recalibré pour obteni
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17

Coons, Susanna. "Synthesis and pharmacology of site-specific cocaine abuse treatment agents : 6-(N,N-Dimethylamino)-5-(4-chlorophenyl)bicyclo[222]octan-2-yl benzoate." Thesis, Georgia Institute of Technology, 2000. http://hdl.handle.net/1853/27609.

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18

Baek, Sang-Ho. "DEM generation and ocean tide modeling over Sulzberger Ice Shelf, West Antarctica, using synthetic aperture radar interferometry." Columbus, Ohio : Ohio State University, 2006. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1155745007.

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19

Rowen, Catherine Carmel, and n/a. "A New Approach Towards Bicyclo[4.2.0]octan-1-ols: Synthetic and Mechanistic Studies." Griffith University. School of Science, 2003. http://www4.gu.edu.au:8080/adt-root/public/adt-QGU20030602.131636.

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The reaction between the lithium enolate of cyclohexanone and phenyl vinyl sulfoxide resulted in the formation of the novel bicyclooctanol sulfoxides 215-217 and the monoalkylated sulfoxide 218. The effects of variation in reaction time, temperature and concentration were studied. Under optimal conditions (10 minutes, -10°C and 0.085 M) the ratio of the bicyclooctanol sulfoxides 215-217 (75% yield) to the monoalkylated sulfoxide 218 was 95:5. The bicyclooctanol sulfoxides 215-217 were characterised as the sulfone derivatives, bicyclooctanol sulfones 219 and 220. X-ray crystal structures we
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20

Rowen, Catherine Carmel. "A New Approach Towards Bicyclo[4.2.0]octan-1-ols: Synthetic and Mechanistic Studies." Thesis, Griffith University, 2003. http://hdl.handle.net/10072/367745.

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The reaction between the lithium enolate of cyclohexanone and phenyl vinyl sulfoxide resulted in the formation of the novel bicyclooctanol sulfoxides 215-217 and the monoalkylated sulfoxide 218. The effects of variation in reaction time, temperature and concentration were studied. Under optimal conditions (10 minutes, -10&deg;C and 0.085 M) the ratio of the bicyclooctanol sulfoxides 215-217 (75% yield) to the monoalkylated sulfoxide 218 was 95:5. The bicyclooctanol sulfoxides 215-217 were characterised as the sulfone derivatives, bicyclooctanol sulfones 219 and 220. X-ray crystal structure
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21

Foo, Kae Yeet. "Incoherent processing of synthetic aperture sonar." Thesis, University of Birmingham, 2004. http://etheses.bham.ac.uk//id/eprint/3604/.

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The technique of synthetic aperture imaging is well applied in radar to produce images with high along-track resolution. However, when applied in sonar imaging, maintaining phase coherence across the length of the synthetic aperture had proven to be the greatest challenge due to the relatively much slower speed of sound waves and the instability inherent in an underwater towed platform. This work aims to study, analytically and experimentally, the potential of reconstructing synthetic aperture images, by the exact reconstruction algorithm in the time-domain, without the use of phase informatio
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22

Razafimbelo, Eugène. "Le bassin de morondava (madagascar) : synthese geologique et structurale." Université Louis Pasteur (Strasbourg) (1971-2008), 1987. http://www.theses.fr/1987STR13184.

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La synthese des donnees geologiques et structurales du bassin de morondava conduit a modifier la nomenclature stratigraphique des formations sedimentaires du type "karroo". Dans le bassin, le controle tectonique de la sedimentation est realise par un jeu complexe mais permanent de failles en faisceaux denses. La fracturation continentale a permis la mise en place de roches effusives basaltes et gabbros, puis roches granito-syenitiques. L'epaisseur et la nature des formations sedimentaires du bassin de morondava sont propices a la naissance de gisements d'hydrocarbures
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23

Faleh, El Mâti el. "Les mecanismes de synthese de l'apatite par activite bacterienne : role et comportement de quelques elements mineraux, application aux phosphates sedimentaires." Strasbourg 1, 1988. http://www.theses.fr/1988STR13038.

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La synthese des apatites a ete realisee dans un milieu liquide d'eau douce ou marine, par transformation de carbonate et par precipitation directe. La cristallogenese de ces mineraux necessite une activite bacterienne indispensable a la biodegradation de la matiere organique (arn) et a la mineralisation du phosphore sous forme d'acide phosphorique. En plus de leur activite biodegradante, les bacteries servent de site a la nucleation et a la cristallisation purement chimique de l'apatite hors de leur membrane. Cette nucleation est favorisee par une forte saturation en phosphore, calcium et fluo
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24

Ramos, Pérez Isaac. "Pau-synthetic aperture: a new instrument to test potential improvements for future interferometric radiometers." Doctoral thesis, Universitat Politècnica de Catalunya, 2012. http://hdl.handle.net/10803/80600.

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The Soil Moisture and Ocean Salinity (SMOS) mission is an Earth Explorer Opportunity mission from the European Space Agency (ESA). It was a direct response to the global observations of soil moisture and ocean salinity. Its goal is to produce global of these parameters using a dual-polarization L-band interferometric radiometer the Microwave Imaging Radiometer by Aperture Synthesis (MIRAS). This instrument is a new polarimetric two-dimensional (2-D) Y-shaped synthetic aperture interferometric radiometer based on the techniques used in radio-astronomy to obtain high resolution avoiding large an
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Vicente, Ricardo Miguel F. P. "Characterization of Synthetic Aperture Radar Image Features of the Ocean as a Function of Wind Speed and High Frequency Radar Products." Thesis, Monterey, California. Naval Postgraduate School, 2012. http://hdl.handle.net/10945/7424.

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High-definition source images for those used in this document are available here: http://hdl.handle.net/10945/13822<br>Approved for public release, distribution unlimited<br>Assessment of coastal ocean conditions is valuable for both military and civilian operations. Remote sensing of those conditions can be even more valuable, particularly in the case of all-weather sensor types. The potential for better understanding of ocean conditions through the combination of remote sensing results was recognized here with the focus on SAR imagery and High Frequency (HF) radar-derived surface currents. T
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26

Langesfeld, Ivan. "Fragile Oceans, Synthetic Flotsam and Microbial Collaboration – Explorations in the Visual Communication of the Plastic Crisis." Scholarship @ Claremont, 2019. https://scholarship.claremont.edu/pomona_theses/210.

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Scientific evidence that the ocean plastic crisis is larger in scale and more sinister than previously thought continues to mount, but the rate of plastic production is only rising. What will it take to decisively turn the tide against plastic? We need scientists, politicians, and industry changemakers to continue producing knowledge and positive change in the industry, but we need to go further still. This thesis explores art as an alternative visual communication strategy with the capacity to encourage curiosity, empathy, and positive engagement with the issue of ocean plastics. The series o
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27

Rolland, Marie-Noëlle. "Modélisation biophysique des émissions de NO par les sols agricoles, spatialisation et impact sur la chimie troposphérique à l'échelle régionale." Phd thesis, Université Pierre et Marie Curie - Paris VI, 2008. http://tel.archives-ouvertes.fr/tel-00325316.

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Les inventaires d'émissions biogéniques dans les modèles de qualité de l'air sont peu adaptés, car basés sur l'utilisation de facteurs d'émission (FE) moyens ils intègrent partiellement les variables environnementales et techniques pilotant ces émissions. Le but de cette thèse a été d'améliorer la prise en compte des émissions de NO par les sols agricoles dans le modèle de chimie transport CHIMERE. Ce travail se base sur un modèle d'agro-écosystème CERES-EGC, qui simule la dynamique de l'azote dans le système sol-plante. Un module d'émission de NO y a été intégré et le test sur des données exp
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Martinez-Diaz-de-Leon, Asdrubal. "The use of the ERS-2 synthetic aperture radar to study the wind driven ocean circulation in the Gulf of Tehuantepec, Mexico, during Norte events." Thesis, University of Southampton, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.246236.

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29

Mandelt, Klaus. "Synthese und Umlagerung von Bicyclobutyl-1-Olen und Spiro[3.4]Octan-5-Olen ein neuer Zugang zu (±)-endo-Capnellen /." [S.l. : s.n.], 2000. http://deposit.ddb.de/cgi-bin/dokserv?idn=961823461.

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30

Abou, Karaki Najib. "Synthese et carte sismotectonique des pays de la bordure orientale de la mediterranee : sismicite du systeme de failles du jourdain-mer morte." Université Louis Pasteur (Strasbourg) (1971-2008), 1987. http://www.theses.fr/1987STR13067.

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Realisation d'une carte sismotectonique (echelle 1:1 000 000) fondee sur la sismicite historique et instrumentale, la tectonique active, le volcanisme et les aspects geophysiques. Cette carte, concue sur support numerique, est evolutive et modifiable en temps reel. Les premiers mecanismes focaux de la zone du golfe d'aquaba et des failles du carmel sont proposes, accompagnes des relocalisations des trois crises recentes dans cette zone. Une distribution epicentrale en anneau de sismicite est mise en evidence dans la partie centrale de la vallee du jourdain. Les taux de recurrence pour les segm
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31

Komarov, Alexander. "New methods for detecting dynamic and thermodynamic characteristics of sea ice from radar remote sensing." Institute of Electrical and Electronics Engineers, 2014. http://hdl.handle.net/1993/30225.

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This dissertation presents new methods for detecting dynamic and thermodynamic characteristics of Arctic sea ice using radar remote sensing. A new technique for sea ice motion detection from sequential satellite synthetic aperture radar (SAR) images was developed and thoroughly validated. The accuracy of the system is 0.43 km obtained from a comparison between SAR-derived ice motion vectors and in-situ sea ice beacon trajectories. For the first time, we evaluated ice motion tracking results derived from co-polarization (HH) and cross-polarization (HV) channels of RADARSAT-2 ScanSAR imagery an
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Bica, Eduardo. "Une nouvelle approche pour la synthese de populations stellaires dans les galaxies." Paris 7, 1987. http://www.theses.fr/1987PA077092.

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Nouvelle methode pour la synthese de populations stellaires dans les noyaux de galaxies utilisant une bibliotheque de spectres integres d'amas d'etoiles. L'avantage de cette methode porte sur deux parametres: l'age et la metallicite. Une attention speciale a ete donnee aux differentes sources de rougissement interstellaire affectant les amas d'etoiles et les galaxies. Cette approche permet une estimation directe de l'evolution chimique a partir du spectre en absorption des noyaux de galaxies
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Kurata, Naoko. "Sea Surface Microlayer Microbial Observation System." NSUWorks, 2012. http://nsuworks.nova.edu/occ_stuetd/188.

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Chapter 2 The sea surface microlayer is a biogenic thin layer, comprising less than one millimeter of the ocean surface. This surface layer has gained much attention due to its dampening effect on ocean capillary ripples. The chemistry of the air-sea interface has been studied for decades; however, the structure and function of the marine bacterial community within the sea surface microlayer are still understudied. Although various sea surface microlayer sampling techniques were developed over the past decades, aseptic bacterial sampling in the open ocean is a rather challenging task. In this
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Vaillant, Brigitte. "Étude expérimentale du rôle de flores bactériennes dans la formation de l'apatite." Nancy 1, 1987. http://www.theses.fr/1987NAN10452.

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La modélisation de la formation d'apatite au sein des sédiments organiques à partir d'incubation en cuve de composés organo-phosphores en présence d'aragonite montre que la présence et l'activité des bactéries sont indispensables dans de tels milieux. La phosphatogénèse est étudiée, ainsi que l'inhibition de la synthèse d'apatite en eau de mer et eau douce
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Guerreiro, Kévin. "Amélioration des estimations d'épaisseur de glace de mer arctique par altimétrie spatiale." Thesis, Toulouse 3, 2017. http://www.theses.fr/2017TOU30277.

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Les observations spatiales d'extension de glace de mer montrent que la banquise arctique a fortement réduit au cours des 40 dernières années, avec une nette tendance à l'accélération depuis la fin des années 1990. Bien que les processus expliquant cette fonte accélérée soient en partie compris, les modèles de banquise ne reproduisent pas clairement les variations d'extension observées. Cette mauvaise représentation des modèles est généralement attribuée à une méconnaissance des rétroactions climatiques. Parmi ces rétroactions, nous souhaitons nous intéresser à l'une d'entre elles en particulie
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TROUILLET, LISE. "Nouveaux ligands polymeres solubles et conjugues : synthese et caracterisation des ligands libres et des complexes de ru(ii) et d'os(ii) correspondants." Université Joseph Fourier (Grenoble), 2000. http://www.theses.fr/2000GRE10191.

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L'introduction de metaux de transition directement dans la structure conjuguee de polymeres conducteurs electroniques devrait permettre l'etablissement d'interactions electroniques fortes entre la matrice polymere et les complexes metalliques, et donc l'apparition de nouvelles proprietes synergiques. Dans ce contexte, nous avons synthetise une nouvelle famille de polymeres conjugues alternant troncons oligo(3-octylthiophene) regioreguliers tete a queue et ligands 2,2-bipyridine, libres ou metalles par du ruthenium ou de l'osmium. Les syntheses ont ete effectuees par polycondensation chimique d
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Papadimitriou, Panayotis. "Etude de la structure du manteau supérieur de l'Europe et modélisation des ondes de volume engendrées des séismes égéens." Paris 7, 1988. http://www.theses.fr/1988PA077133.

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On construit un modèle de vitesse qui correspond a la structure du manteau supérieur de l'Europe en utilisant des stations européennes les ondes de volume p et pp et des séismes qui ont lieu dans le domaine égéen. Pour cela on utilise la méthode des faisceaux gaussiens. Il est alors possible pour des séismes dont D<30**(O) de déterminer leur mécanisme au foyer et leur intensité
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Gros, Emmanuelle. "Isolement, identification et synthèse biomimétique de métabolites secondaires issus d'invertébrés marins de la zone sud-ouest de l'océan Indien." Thesis, La Réunion, 2013. http://www.theses.fr/2013LARE0005/document.

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Le principal objectif de cette thèse, au caractère interdisciplinaire, concernait l'étude de l'éponge Biemna laboutei de Madagascar, connue pour sa toxicité (causant notamment des dermatites). Les travaux entrepris comprenaient en premier lieu, l'étude chimique de cette éponge incluant l'extraction, l'isolement et l'identification des métabolites secondaires par différentes techniques chromatographiques (CLMP, CLHP…) et spectroscopiques (UV-visible, HRMS, RMN 1D et 2D…). Dix-huit alcaloïdes appartenant à la classe rare des hétérocycles tricycliques (5,6,8b)-triazaperhydroacénaphtylène (i.e. pt
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Sunjoto. "La mesure de l'ouverture de filtration des géotextiles : analyse des méthodes d'essai." Grenoble 1, 1986. http://www.theses.fr/1986GRE10095.

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Le choix d'un geotextile utilise comme filtre est effectue a partir d'un critere de retention des particules du sol a filtrer. Ce critere est base sur une caracteristique du geotextile appele "ouverture de filtration" qu'on peut definir comme etant la dimension de la plus grosse particule susceptible de traverser le geotextile. Actuellement plusieurs methodes, experimentales surtout, permettent de determiner ce parametre, mais les resultats sont tres differents suivant la methode utilisee. Mise en evidence des parametres source de divergence entre les resultats. Comparaison systematique sur 18
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Ruck, Régine. "Étude par résonance paramagnétique électronique du couplage des éléments en trace dans les cassitérites naturelles et des cristaux synthétiques de SnO : :(2) dope." Nancy 1, 1987. http://www.theses.fr/1987NAN10245.

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Étude de cinq couplages d'éléments en trace liant FE**(3+) (ion paramagnétique) à un autre défaut chimique dans les cassitérites. Les résultats obtenus par RPE sur monocristal permettent de localiser FE**(3+) en substitution de SN**(3+) en site octaedrique dans les cinq cas. Le traitement thermique de cassitérites naturelles provoque la diffusion sélective du FE**(3+) en fonction de son couplage et la formation de nouvelles microphases ferriques
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41

Bordairon, Marc. "Dimensionnement des massifs en sol renforcé par géosynthétiques." Grenoble INPG, 1986. http://www.theses.fr/1986INPG0113.

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Calcul des massifs de soutenement en terre renforcee par des nappes horizontales de geosynthetiques. Analyse detaillee d'une nouvelle "methode double blocs" et formalisee par une geometrie quelconque et des sollicitations diverses. Surface de glissement polygonale. Etude de l'influence de certains parametres (hauteur, sol, inclinaison du parement) sur le dimensionnement en vue de l'elaboration d'abaques de dimensionnement de massifs en sol renforce que l'on presente. Comparaison avec des methodes d'equilibre limite a surface de glissement circulaire. Resume des principales methodes traditionne
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42

Vámošová, Mária. "Wang Tiles for Frequency-Based Synthesis of Ocean Surfaces." Master's thesis, 2014. http://www.nusl.cz/ntk/nusl-323064.

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Frequency-based ocean synthesis is a class of methods for generating ocean waves in deep water using physically based ocean spectra provided by oceanographic research. The output of these methods is a heightfield which is periodic and can be used to tile a larger area. However, when using a larger number of tiles, a repetition pattern becomes apparent. Wang tiling is a method of tiling the plane non- periodically by using only a small set of input tiles with given constraints. The aim of this thesis is to create a set of Wang Tiles, each of which represents an ocean heightfield synthesised by
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43

Wang, ShuHwei, and 汪淑慧. "An Application of Fuzzy Synthesis Theory on the Assessment of Albacore Stock in the Indian Ocean." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/60780494711387419309.

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博士<br>國立臺灣大學<br>海洋研究所<br>89<br>Abstract When applying the mathematical model in estimating the fishery resource, the deviation is mainly resulted from the system and observation errors. For example, to estimate the stock status of albacore in the Indian Ocean by surplus production model, the target species have shifted for the fishery structure change in Taiwan longline fishery. The data of effort target on different species was not separated in the logbooks that resulted in the observation error. Therefore, the error should be treated to make the estimate closer to the real fish
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Sharp, Phillip Patrick. "Consecutive gold[I]-catalysed cyclisation reactions leading to polyfused heterocycles of agrochemical relevance." Phd thesis, 2011. http://hdl.handle.net/1885/151313.

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Variolin B, a marine natural product isolated from the Antarctic sponge Kirkpatrickia variolosa, possesses a rare heterocyclic framework and is a potent CDK inhibitor. Such properties have prompted the industry partner associated with this project, namely the German chemical commodities company BASF, to select this compound as a lead for the development of new agrochemicals. This thesis details the development of new synthetic methods specifically designed to produce complex heterocyclic frameworks related to variolin B. The synthetic plan, which involved consecutive electrophile-promoted nuc
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Huang, Bo-Qi, and 黃柏棋. "Analysis of the influence of model structure on the stock assessment for blue marlin in the Indian Ocean using Stock Synthesis." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/61103622151456133705.

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碩士<br>國立臺灣海洋大學<br>環境生物與漁業科學學系<br>103<br>Blue marlin (Makaira nigricans) is a highly migratory species distributed wildly in the three Oceans. In the Indian Ocean, they are considered as bycatch for industrial and artisanal fisheries. Blue marlin in the Indian Ocean was exploited by several fleets since 1950s, including the Japanese and Taiwanese longline fleets and the longline/gillnet fleet of Sri Lanka. This study evaluated the impact of various assumptions of biological parameters and model structures on the stock assessment results of blue marlin in the Indian Ocean using Stock Synthesis b
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Cele, Cyril M. "Extractives from marine organisms." Thesis, 2000. http://hdl.handle.net/10413/4336.

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The study involves the investigation of the chemical composition of some marine organisms. This entails collecting the organism, extracting compounds from it and separation, characterization and identification of these compounds. Marine chemistry has been ignored by many scientists in the past and it is for this reason that these organisms have been investigated, with the aim of discovering their chemistry and also finding new compounds which might be of value in our society. Such value may be the medicinal benefit and/or the understanding of some toxicological effect of some species. This stu
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Krijt, Filip. "Adaptivní simulace rozsáhlého povrchu oceánu." Master's thesis, 2014. http://www.nusl.cz/ntk/nusl-341253.

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Physically-driven methods of simulating fluid dynamics and frequency-based ocean surface synthesis methods are of long-standing interest for the field of computer graphics. However, they have been historically used separately or without any interaction between them. This thesis focuses on the possibility of combining the approaches into one adaptive solution by proposing methods for unified surface representation, method result blending and one-way interaction between the methods. The thesis also outlines several future developments of the combined method and proposes a level-of-detail approac
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48

Jen, Chung-Min, and 任崇銘. "The Study of Synthetic Ocean Environmental Data Established around Taiwan Waters." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/87492910618390793409.

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碩士<br>國立成功大學<br>地球科學系碩博士班<br>94<br>Environment data are interactive with human life and always take a lot of time and man power to collect. Emergency disasters happen such as poison gas or oil leaking events, in case. It becomes very important to describe and display dynamic metrological and oceanic environment data for visualization in different time series. Only completive synthetic environment data can efficiently give support to command control and decision-making. So far, GIS system still can not handle it, especially in lack of building and pre-processing dynamic environment with time se
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Huang, Pin-Han, and 黃品翰. "Asymmetric Organocascaded Synthesis of Spiro Bicyclo[2.2.2]octan-2-one Frameworks." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/32500466521703236517.

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碩士<br>國立臺灣師範大學<br>化學系<br>104<br>A method to build the framework of bicyclo[2.2.2]octanes via 2-amino-1,3-dienes system with quinine-derived primary amine catalyst was disclosed. According to optimized conditions, cyclohexenones and 2-aryllidene-1,3-indanediones were dissolved in toluene at the room temperature, then 20 mol% of primary amine catalyst and 20 mol% of benzoic acid were added. The substituted bicyclo[2.2.2]octanones, bearing one spiro quaternary carbon and three chiral centers, were obtained in high yields (up to 91 %), excellent diastereoselective ( up to >20:1 dr) and enantiosele
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Echevarria, AR. "Global to coastal modulation of wind-wave climates by ocean surface currents." Thesis, 2021. https://eprints.utas.edu.au/39484/1/Echevarria_whole_thesis.pdf.

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This thesis examines the influence of the ocean surface circulation on the global wind-wave climate. Surface currents modulate wave properties through the Doppler shift effect, exchanges of energy mediated by the radiation stress, refraction, and through a modification of the relative wind. While the interaction between waves and currents has been thoroughly investigated in coastal locations with strong tidal flows, the impact of the global ocean circulation on the wave climate has received relatively little attention. In this study, spectral wind-wave simulations with and without current forc
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