Dissertations / Theses on the topic 'Helional'
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Cormick, Justin. "Isotope ratio analysis of 3,4-methylenedioxyamphetamine (MDA) and 3,4-methylenedioxymethylamphetamine (MDMA) synthesised from helional." Thesis, Griffith University, 2022. http://hdl.handle.net/10072/415810.
Full textThesis (PhD Doctorate)
Doctor of Philosophy (PhD)
School of Environment and Sc
Science, Environment, Engineering and Technology
Full Text
Marrakchi, Mouna. "Développement et optimisation de biocapteurs à base de biomolécules et de micro-organismes sur microélectrodes interdigitées." Ecully, Ecole centrale de Lyon, 2006. http://bibli.ec-lyon.fr/exl-doc/mmarrakchi.pdf.
Full textNowadays, the needs in biosensors has proven to be real and relevant in several fields such as the environment, health,. . . To meet those needs and expectations, we focused in this thesis on the design of different biosensors based on enzyme and/or micro-organisms immobilized on conductometric electrodes. The first part of this study is dedicated to the use of proteinase K based biosensor to estimate and control organic pollution in river's waters through protein titration. The next part describes the development of a biosensor mixing two distinct enzymatic activities, the beta-galactosidase and the glucose oxidase, and its application to lactose determination in milk. The efficiency of the conductometric biosensor in lactose analysis, as a result of combination of lactose enzymatic hydrolysis (though beta-galactosidase) and glucose oxidation(catalyzed by glucose oxidase), were afterwards applied to selenite determination (toxic element if used in important quantities). This was realized by using Herminiimonas arsenicoxydans bacterial cells where the beta-galactosidase activity is induced by selenite. Thus, an original conductometric biosensor has been developed, based on the combination of glucose oxidase activity and genetically modified bacteria, which produced abeta-galactosidase activity in presence of selenite. Finally, an olfactory biosensor based on the immobilization of a genetically modified Saccharomyces Cerevisiæ yeast, expressing the human olfactory receptor OR17-40, has been successfully developed and applied to helional detection
Bezuidenhout, Jacques. "Pre-equilibrium helion emission induced by protons." Thesis, Link to the online version, 2006. http://hdl.handle.net/10019.1/1307.
Full textHoas, Karin. "Att bygga staden i fyra dimensioner: personliga reflektioner om arkitektens roll som stadsbyggare samt exemplet Heliodal i Rönninge." Thesis, KTH, Arkitektur, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-170110.
Full textThe thesis consists of two separate parts. The text ”Building the Town in Four Dimensions: Personal Reflections on the Architect's Role as an Urban Planner” discusses urban planning from a ”community” and a ”municipality” piont of view, the architect´s tasks of public space and of the town as a system, and some aspects of time as the fourth dimension: urban planning takes time, has long-lasting effects, is a continuous process, the premises keep changing, it affects people´s everyday life and the public space changes over the day and the year. ”Heliodal in Rönninge: Facts and Inspiration for Your Own New House” describes the area of Heliodal, its characteristics and history, and some ideas how this can be taken care of when adding new houses. This part of the thesis is presented as a brochure meant for families who consider buying some property and having their own house constructed. It is based on a real town plan for an area in the municipality of Salem, south of Stockholm. In areas like this most of the new houses are likely to be prefabricated houses of different kinds. The brochure shows the place and its history, the main features of the landscape and the existing buildings, the basic ideas of the town plan and some suggestions how to choose house and plan the garden to make them fit into the environment, emphasizing adaption to the natural topography.
Qu, Zhipeng. "La nouvelle méthode Heliosat-4 pour l’évaluation du rayonnement solaire au sol." Thesis, Paris, ENMP, 2013. http://www.theses.fr/2013ENMP0040/document.
Full textSeveral methods have been developed to assess operationally the surface solar irradiance from satellite images. During his PhD thesis presented in 2009 at MINES ParisTech, Oumbe has designed a new method using numerical radiative transfer model and fast approximations. The present PhD thesis aimed at consolidating these results and validating Heliosat-4. This work is the international scientific collaboration framework of the European-funded projects MACC (Monitoring Atmosphere Composition and Climate) and MACC-II.As a foundation of Heliosat-4, Oumbe has proposed an approximation of the radiative transfer equation by a product of clear-sky irradiance and a term describing the cloud extinction. We have established that estimation errors due to this approximation are very small in usual conditions and that this approximation may be adopted. It allows a convenient modular development of Heliosat-4 and eases its future operational use.The Heliosat-4 method is then composed of two abacus-based models: McClear for the irradiance under clear-sky and McCloud for the irradiance extinction due to clouds. With in-situ reference measurements of direct and diffuse irradiance, we have carried out deep performance analysis of Heliosat-4, under different conditions. The quality of this first preoperational version of Heliosat-4 is judged satisfactory as it enables estimations of global irradiance with the same level of quality of other existing methods in literature but also estimations of direct and diffuse irradiances with a noticeable better quality
Qu, Zhipeng. "La nouvelle méthode Heliosat-4 pour l'évaluation du rayonnement solaire au sol." Phd thesis, Ecole Nationale Supérieure des Mines de Paris, 2013. http://pastel.archives-ouvertes.fr/pastel-00957358.
Full textTournadre, Benoît. "Heliosat-V ˸ une méthode polyvalente d’estimation du rayonnement solaire au sol par satellite." Thesis, Université Paris sciences et lettres, 2020. http://www.theses.fr/2020UPSLM063.
Full textSolar irradiance at the surface of the Earth is recognized as an essential climate variable by the World Meteorological Organization. Its knowledge is as much important for climate sciences as for the development of energy alternatives to fossil fuels, like solar photovoltaic. Ground measurements of this radiation are very sparse on Earth, explaining the interest for satellite-based remote sensing to estimate it. Combining estimations from different satellites in orbit is a pathway to cover the information on the whole globe. Different generations of satellites also produced a multidecadal imagery of the Earth, making it conceivable to estimate long time series of solar radiation, or even to identify long-term variations, a recurrent objective in the study of climate change. For more than 30 years, Heliosat methods estimate surface solar irradiance from satellite imagery, but they have been designed to be applied to a specific sensor on a geostationary orbit, and have limitations in their scope : the need for a long archive of satellite imagery (Heliosat, Heliosat-2), or else the need for multispectral measurements (Heliosat-4). This work dedicated to the development of a Heliosat-V method brings elements of versatility to the satellite-based estimation from so-called "cloud-index" methods, with the ultimate goal to reach homogeneous data of solar radiation derived from measurements made by different satellite instruments. Two issues are in particular considered here to reach such an estimation: the diversity of sensors in terms of spectral sensitivities, and the influence of viewing and solar geometries on spaceborne measurements. The method extensively deals with radiative transfer modeling in the spectral range 400-1000 nm to simulate on one hand satellite measurements in clear-sky conditions, and on the other hand satellite measurements in the presence of an optically thick cloud. The method is tested on the imagery of a geostationary satellite instrument, Meteosat-9/SEVIRI, and in a more exploratory way, on the non geostationary sensor DSCOVR/EPIC. Results are compared to high quality ground-based measurements of irradiance, and show performances similar to operational satellite products. However, the quality of estimates depends on the spectral channel used, and especially of the presence of clear-sky atmospheric scattering or absorption in the signal measured by the satellite instrument. The accent is also put on the need for an accurate absolute calibration of satellite radiometric measurements in order to produce time series of surface solar irradiance with the smallest biases and temporal drift possible
Gleim, Andrea. "Retentionsraten und klinische Verarbeitungseigenschaften der Fissurenversiegler Helioseal-F und Fissurit-F im Vergleich eine prospektive Doppelblindstudie /." Giessen : VVB Laufersweiler, 2006. http://deposit.d-nb.de/cgi-bin/dokserv?idn=981577229.
Full textAlbarelo, Tommy. "Estimation de l'Irradiation Solaire sur le Plateau des Guyanes : apport de la Télédétection Satellite." Thesis, Guyane, 2016. http://www.theses.fr/2016YANE0008/document.
Full textKnowledge of solar radiation, or solar irradiation, at Earth’s surface is of great interest in many fields. However, the development of systems using solar energy need spatially and temporally dense data on solar radiation, sufficiently accurate to simulate, design, generate and optimize the operation of these systems.The main objective of this thesis is to design and develop a method to assess solar irradiation applicable on intertropical regions. The works of the first part focus on the search of a methodological solution to assess solar irradiation on the northern part of the South American continent (Guiana Shield) with a high temporal and spatial resolution and accuracy on the same level of other operational methods under other climates. In the second part, we propose to improve the solar irradiation assessments obtained in the first part, notably those done in cloudy sky. The Guiana Shield being a zone strongly affected by the ITCZ and with recurrent cloudy periods, it appeared necessary to us to complete the changes brought to the original method by introducing a modeling of the cloudy sky. In the third part, we propose to produce maps of indicators by using the assessments of solar irradiation obtained with the modified Heliosat-2 method. Finally, we conclude on the advances obtained in terms of knowledge on solar irradiation and its exploitability on the Guiana Shield
Gleim, Andrea [Verfasser]. "Retentionsraten und klinische Verarbeitungseigenschaften der Fissurenversiegler Helioseal-F und Fissurit-F im Vergleich : eine prospektive Doppelblindstudie / vorgelegt von Andrea Gleim." Wettenberg : VVB Laufersweiler, 2006. http://d-nb.info/981577229/34.
Full textOumbe, Armel. "Exploitation des nouvelles capacités d'observation de la terre pour évaluer le rayonnement solaire incident au sol." Phd thesis, École Nationale Supérieure des Mines de Paris, 2009. http://tel.archives-ouvertes.fr/tel-00450925/en/.
Full textEner, Rusen Selmin. "Linking Satellite Imagery To Bright Sunshine Hours For The Estimation Of Global Solar Irradiation." Phd thesis, METU, 2013. http://etd.lib.metu.edu.tr/upload/12615723/index.pdf.
Full textm linear relation between daily solar irradiation and daily bright sunshine hours are used to replace the clear sky irradiance calculations of HELIOSAT model. In the second approach new correlations are obtained between daily bright sunshine hours (s) and cloud index (n). Last model that is developed uses a new correlation expression between daily solar irradiation and daily data of s and n and this expression is derived using a physical consideration. The performances of the proposed models are tested against conventional methods (mainly, satellite-based HELIOSAT and ground-based linear Angströ
m-Prescott type). The results show that the use of sunshine duration together with the cloud index is quite satisfactory in the estimations of daily global solar irradiation. The accuracy of estimations of the combined models is considerably higher than the conventional approaches. Therefore, we propose to use the new approaches to estimate daily global irradiation whenever the data of bright sunshine hours is available for the location of interest or a nearby station. In addition, for a point on the earth surface, depending on the data in hand, suitable and most accurate models of estimations are proposed for that point.
Krauth, Julian [Verfasser], and Theodor W. [Akademischer Betreuer] Hänsch. "The Lamb shift of the muonic helium-3 ion and the helion charge radius / Julian Krauth ; Betreuer: Theodor W. Hänsch." München : Universitätsbibliothek der Ludwig-Maximilians-Universität, 2017. http://d-nb.info/1132061083/34.
Full textMachado, Jorge Felizardo Dias Cunha. "High precision tests of QED Measurement of the alpha-particle and helion rms charge radius and the transition energies in highly-charged ions." Doctoral thesis, Sorbonne université, 2018. http://hdl.handle.net/10362/33710.
Full textThis work aims to provide insight on Bound-State Quantum-Electrodynamics (BSQED) by experimental fundamentals high-precision tests in exotic states of matter. Although BSQED and the relativistic many-body problem have been undergoing important progress, there are still some issues that require the increase of the number and accuracy of experimental fundamental tests. The first part of this work was done within the framework of the recent experiment in muonic helium ions (μ4He+ and μ3He+) by the CREMA collaboration. This experiment, aims to provide new accurate values for the root-mean-square (rms) charge radii of the helium isotopes nuclei that are extracted from the measurement of the Lamb Shift, i.e., the measurement of the energy difference between the 2S − 2P states. With the goal of measuring the transition energies with an accuracy of at least 50 ppm, the rms charge radii of the helium isotopes will be determined with an uncertainty of 0.03%, a factor of ten more precise than previous results obtained from electron scattering. The second part of this work aims the high-precision measurement of x-ray transitions in Highly-Charged Ions (HCI) using a Double-Crystal Spectrometer (DCS). These ions were produced in the plasma of an Electron-Cyclotron Resonance Ion Source (ECRIS). This kind of spectrometer is able not only to provide high-precision measurements but also reference-free measurements, without reference to any theoretical or experimental energy. Four transitions energies from n = 2 → n = 1 have been measured in an argon plasma in three different charge states, He-, Be- and Li-like, with an accuracy of better than 3 ppm. Besides the energies, the natural width of each transition has also been experimentally obtained. The obtained results are in excellent agreement with the most recent theoretical calculations
Machado, Jorge Felizardo Dias Cunha. "High precision tests of QED : measurement of the alpha-particle and helion rms charge radius and the transition energies in highly-charged ions." Thesis, Sorbonne université, 2018. http://www.theses.fr/2018SORUS016/document.
Full textThis work aims to provide insight on Bound-State Quantum-Electrodynamics (BSQED) by experimental fundamentals high-precision tests in exotic states of matter. Although BSQED and the relativistic many-body problem have been undergoing important progress, there are still some issues that require the increase of the number and accuracy of experimental fundamental tests. The first part of this work was done within the framework of the recent experiment in muonic helium ions (μ4He+ and μ3He+) by the CREMA collaboration. This experiment, aims to provide new accurate values for the root-mean-square (rms) charge radii of the helium isotopes nuclei that are extracted from the measurement of the Lamb Shift, i.e., the measurement of the energy difference between the 2S − 2P states. With the goal of measuring the transition energies with an accuracy of at least 50 ppm, the rms charge radii of the helium isotopes will be determined with an uncertainty of 0.03%, a factor of ten more precise than previous results obtained from electron scattering. The second part of this work aims the high-precision measurement of x-ray transitions in Highly-Charged Ions (HCI) using a Double-Crystal Spectrometer (DCS). These ions were produced in the plasma of an Electron-Cyclotron Resonance Ion Source (ECRIS). This kind of spectrometer is able not only to provide high-precision measurements but also reference-free measurements, without reference to any theoretical or experimental energy. Four transitions energies from n = 2 → n = 1 have been measured in an argon plasma in three different charge states, He-, Be- and Li-like, with an accuracy of better than 3 ppm. Besides the energies, the natural width of each transition has also been experimentally obtained. The obtained results are in excellent agreement with the most recent theoretical calculations
Diallo, Mouhamet. "Estimation et prédiction de l’ensoleillement en zone intertropicale Improving the Heliosat-2 Method for Surface Solar Irradiation Estimation Under Cloudy Sky Areas Assessing GFS and IFS global weather preduction and numerical model forecast accuracy in the intertropical zone and for tropical climates Calibration of WRF irradiance in French Guiana and comparison with AROME forecasts." Thesis, Guyane, 2018. http://www.theses.fr/2018YANE0009.
Full textFrench Guiana is a French territory located in the inter-tropical zone (ITZ). The ITZ is an area with highly variable dynamic in which we encounter significant amounts of convective clouds. Consequently the solar energy available at the ground is highly variable. This variability causes economical and technical challenges to fully exploit this resource. This thesis dissertation aims to answer the following scientific issue: How could the solar irradiance be assessed and forecast accurately in the ITZ to increase the penetration rate of this intermittent renewable energy into the electricity grid? To answer this scientific issue, we use two tools: Heliosat-II (H-II) and Weather and research forecast (WRF). We used these tools in order to produce improved GHI estimates in the inter-tropical zone. The first chapter introduces the thesis and the research issue. The second chapter presents a modification to H-II; with this modification H-II can account for cloud absorption. The GHI estimates from modified H-II provide therefore tools for decision making in the ITZ. These tools allow one identifying the most suitable locations to install solar facilities in the ITZ with respect to both solar potential and surrounding facilities that favor grid stability. In the third chapter we study first the accuracy in the ITZ of the GHI forecasts from integrated forecast system (IFS) and global forecast system (GFS) numerical weather prediction model (NWP). We validate the accuracy of these downloaded products by comparison with ground measurements from three countries located in the ITZ that have tropical climate. This study aims to fill the gap with regard to the accuracy of global NWP model in the ITZ. Second we propose a methodology to calibrate WRF to produce improved GHI forecasts in the ITZ. The goal is to restrain and select the minimum number of simulations to run, to obtain improved GHI forecasts compared to a non-calibrated model. This methodology to calibrate WRF is validated in French Guiana by comparison with the GHI forecasts of AROME NWP model and ground measurements. The fourth chapter deals with the use of an hybrid 3D variational (3D-Var) ensemble transform Kalman filter (ENTKF) to further improve the GHI forecasts of calibrated WRF in the ITZ. This methodology originally used in the tracking of extreme convection events such as cyclones is applied for the first time for GHI forecasts. This methodology applied to the ITZ therefore allows obtaining improved GHI forecasts which makes easier monitoring the electricity production from solar facilities
Rigollier, Christelle. "Vers un accès à une climatologie du rayonnement solaire : estimation de l'irradiation globale à partir d'images satellitales." Phd thesis, Université Nice Sophia Antipolis, 2000. http://tel.archives-ouvertes.fr/tel-00955264.
Full textHammer, Annette, and annette hammer@uni-oldenburg de. "Anwendungsspezifische Solarstrahlungsinformationen aus Meteosat-Daten." 2000. http://docserver.bis.uni-oldenburg.de/publikationen/dissertation/2001/hamanw00/hamanw00.html.
Full textDe, Villiers Jean Schepers. "Interaction of the eta-meson with light nuclei." Diss., 2005. http://hdl.handle.net/10500/1230.
Full textPhysics
M.Sc. (Physics)