Dissertations / Theses on the topic 'Hybrid trap'
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Zucconi, Galli Fonseca P. "Levitated optomechanics in a hybrid electro-optical trap." Thesis, University College London (University of London), 2017. http://discovery.ucl.ac.uk/1567776/.
Full textChristensen, Peter. "Hybrid quadrupole linear ion trap mass spectrometry : application to metabolites." Thesis, University of Nottingham, 2009. http://eprints.nottingham.ac.uk/13677/.
Full textHöltkemeier, Bastian [Verfasser], and Matthias [Akademischer Betreuer] Weidemüller. "Sympathetic Cooling of Ions in a Hybrid Atom Ion Trap / Bastian Höltkemeier ; Betreuer: Matthias Weidemüller." Heidelberg : Universitätsbibliothek Heidelberg, 2016. http://d-nb.info/1180736516/34.
Full textKas, Milaim. "Cold chemistry of molecular anions: a theoretical investigation in the context of hybrid trap experiments." Doctoral thesis, Universite Libre de Bruxelles, 2018. https://dipot.ulb.ac.be/dspace/bitstream/2013/279061/4/main.pdf.
Full textDoctorat en Sciences
info:eu-repo/semantics/nonPublished
Brown, Stacy D., Justin D. Connor, Nicholas C. Smallwood, and Ralph A. Lugo. "Quantification of Lansoprazole in Oral Suspension by Ultra-High-Performance Liquid Chromatography Hybrid Ion-Trap Time-of-Flight Mass Spectrometry." Digital Commons @ East Tennessee State University, 2011. https://dc.etsu.edu/etsu-works/5308.
Full textLopez, Carrera Henry Lauro [Verfasser], and Matthias [Akademischer Betreuer] Weidemüller. "Sympathetic cooling and rotational quenching of molecular anions in a hybrid atom ion trap / Henry Lauro Lopez Carrera ; Betreuer: Matthias Weidemüller." Heidelberg : Universitätsbibliothek Heidelberg, 2018. http://d-nb.info/1177149214/34.
Full textLopez, Carrera Henry Lauro Verfasser], and Matthias [Akademischer Betreuer] [Weidemüller. "Sympathetic cooling and rotational quenching of molecular anions in a hybrid atom ion trap / Henry Lauro Lopez Carrera ; Betreuer: Matthias Weidemüller." Heidelberg : Universitätsbibliothek Heidelberg, 2018. http://nbn-resolving.de/urn:nbn:de:bsz:16-heidok-252258.
Full textChen, Yan-Fang. "Investigation of interfacial and bulk physical properties of hybrid perovskite-based devices." Thesis, Bordeaux, 2016. http://www.theses.fr/2016BORD0268/document.
Full textHybrid-organic-inorganic perovskites (HOIPs) have provoked intense research over the recent years.In this thesis, we contribute to this investigation by first examining the results of different solutionpreparation processes, followed by characterizing the films using atomic force microscopy, X-raydiffraction, ultra-violet photoelectron spectroscopy, X-ray photoelectron spectroscopy, Kelvin probesurface potential measurement, and time-of-flight mobility measurement. The state distribution of theHOIP/Au interface was then studied by low temperature J–V–L measurement combined withnumerical simulation. In the process of these characterizations, it became clear that the dielectricrelaxations in HOIPs, such as ion migration and organic cation dipole orientation, play an importantrole in the material, and the next part of the thesis presents an analysis of these mechanisms with thehelp of temperature dependent impedance spectroscopy measurement. These studies built thefoundations for the final part of the thesis, where we investigated a so far elusive subject in HOIPs, themigration of protons
Okeyo, Onyango Stephen. "Ultracold Atom-Ion Systems in Hybrid Traps." Doctoral thesis, Humboldt-Universität zu Berlin, 2017. http://dx.doi.org/10.18452/18563.
Full textThis thesis deals with the theoretical description of a hybrid system of an ultracold neutral atom and a single ion. These hybrid atom-ion systems combine the key advantages of ultracold neutral atoms and ions. In particular, neutral atoms are easily scalable and can be prepared in large numbers, while trapped ions can be stored for much longer times and are easy to control. Some of the proposed prospects of the hybrid quantum systems include sympathetic cooling of trapped ions, ultracold chemistry, quantum information processing, and atom-ion quantum simulators. These applications require extremely precise control and thus very accurate theoretical modeling. A new method that allows for a full 6-dimensional treatment of two particles in spatially separated 3-dimensional trapping potentials was developed. By allowing for the spatial displacement between the trapping potentials, it is possible to describe the controlled motion of a single ion through an optical-lattice potential filled with neutral atoms. The interaction between the neutral atom and the ion is modeled using realistic Born-Oppenheimer potential curves from ab initio quantum chemistry calculations. An application of the developed approach to the hybrid atom-ion system reveals avoided crossings between the molecular bound states and the unbound trap states as a function of the separation between the two traps. These avoided crossings correspond to trap-induced resonances. This finding confirms the trap-induced resonances predicted earlier based on quantum-defect-theory calculations. Also, the recently found inelastic confinement-induced resonances in ultracold neutral atoms are demonstrated to be present in atom-ion systems. These resonances arise due to the coupling between the center-of-mass and relative motions. The inelastic confinement-induced resonances could be used in coherent molecular ion formation and in the determination of atom-ion scattering properties like the scattering lengths.
Konda, Sai Sriharsha Manoj. "Computational Investigation of Spin Traps Using Hybrid Solvation Models." Digital Commons @ East Tennessee State University, 2009. https://dc.etsu.edu/etd/1801.
Full textMyers, Jessica Ann, and Jessica Ann Myers. "Hybrid Optical-Magnetic Traps for Studies of 2D Quantum Turbulence in Bose-Einstein Condensates." Diss., The University of Arizona, 2017. http://hdl.handle.net/10150/625625.
Full textTrapp, Jannik Michael [Verfasser], Thomas [Gutachter] Pertsch, Toralf [Gutachter] Scharf, and Wilhelm [Gutachter] Stork. "Holographic and hybrid spectacle lenses / Jannik Michael Trapp ; Gutachter: Thomas Pertsch, Toralf Scharf, Wilhelm Stork." Jena : Friedrich-Schiller-Universität Jena, 2019. http://d-nb.info/1207156558/34.
Full textOkeyo, Onyango Stephen [Verfasser], Alejandro [Gutachter] Saenz, Kurt [Gutachter] Busch, and Zbigniew [Gutachter] Idziaszek. "Ultracold Atom-Ion Systems in Hybrid Traps / Onyango Stephen Okeyo ; Gutachter: Alejandro Saenz, Kurt Busch, Zbigniew Idziaszek." Berlin : Humboldt-Universität zu Berlin, 2017. http://d-nb.info/1185578587/34.
Full textTrinh, Quang Vinh [Verfasser], Quoc Khanh [Akademischer Betreuer] Tran, and Wolfgang Erich [Akademischer Betreuer] Elsäßer. "Characterization, optimization and stabilization of the lighting quality aspects of high qualitative hybrid LED-lamps by development of transient LED models / Quang Vinh Trinh. Betreuer: Quoc Khanh Tran ; Wolfgang Erich Elsäßer." Darmstadt : Universitäts- und Landesbibliothek Darmstadt, 2013. http://d-nb.info/1107771609/34.
Full textMcCormick, Allison. "Studies on the release of neutrophil extracellular traps and IFN-γ as part of the innate immune response to Aspergillus fumigatus and on the fungal stress response via the hybrid sensor kinase TcsC." Diss., lmu, 2012. http://nbn-resolving.de/urn:nbn:de:bvb:19-149532.
Full textMcCormick, Allison [Verfasser], and Ute [Akademischer Betreuer] Vothknecht. "Studies on the release of neutrophil extracellular traps and IFN-γ as part of the innate immune response to Aspergillus fumigatus and on the fungal stress response via the hybrid sensor kinase TcsC / Allison McCormick. Betreuer: Ute Vothknecht." München : Universitätsbibliothek der Ludwig-Maximilians-Universität, 2012. http://d-nb.info/1027669468/34.
Full textHata, Misako. "Comparison of a novel cell-based reporter assay and a competitive binding ELISA for the detection of thyrotropin-receptor (TSHR) autoantibodies (TRAb) in Graves' disease patients." Ohio : Ohio University, 2010. http://www.ohiolink.edu/etd/view.cgi?ohiou1262099140.
Full textŠámalová, Daniela. "Dům krátké cesty." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2016. http://www.nusl.cz/ntk/nusl-354940.
Full textSyka, John E. P. "A hybrid radio frequency quadrupole linear ion trap-fourier transform ion cyclotron resonance mass spectrometer /." 2006. http://wwwlib.umi.com/dissertations/fullcit/3198419.
Full textCoutinho, Daniela Sofia Ribeiro. "Inducing oxidative stress in parasites: novel hybrid compounds based on peroxides to trap catalytic cysteine residues." Master's thesis, 2017. http://hdl.handle.net/10451/34201.
Full textInfectious diseases caused by viruses, parasites and bacteria are currently the second cause of mortality worldwide. One of these parasites is Leishamania spp., which is the protozoa responsible for leishmaniasis. Although, considered the ninth largest infectious disease burden worldwide, is still one of the most neglected tropical disease. Leishmaniasis has three main syndromes, which can range in severity from a relatively benign, self-limiting cutaneous form, to a potentially fatal systemic illness, known as visceral leishmaniasis. While cutaneous leishmaniasis is the most widespread on a global scale, visceral leishmaniasis is the most severe and lethal form of the disease. Another important tropical disease is malaria, caused by Plasmodium spp. protozoan parasite and transmitted by a female infected Anopheles mosquito tropical disease. The control of both diseases still relies on chemotherapy, but the armamentarium currently used have their use limited due to several adverse effects, elevated cost, lack of efficacy, and appearance of resistant parasites. Additionally, there is no effective vaccine to fight either leishmaniasis or malaria. For these reasons, the search for new therapeutic approaches are urgent. Endoperoxides are known to be reductively activated by iron(II)-heme to form carbon centered radicals and reactive oxygen species which can generate oxidative stress inside parasites. Both, Leishmania and Plasmodium require high levels of iron at critical steps of their life cycle, and therefore, these compounds could be promising to the design and discovery of new drugs, since this hybrid compounds can act by a dual mechanism and thus can be more effective than single drugs. In this thesis it is proposed the development of endoperoxide-based hybrid compounds which can generate oxidative stress inside the parasite and alkylate biomolecules essential to the parasite survival, and at the same time can deliver an , -unsaturated compound able to inhibit essential enzymes to the parasite. The synthetic route occurs in two steps. First, an aldehyde or ketone is treated with formic acid and hydrogen peroxide to give the intermediate gem-dihydroperoxide. Then, trans-cinnamaldehyde and Re2O7 are added to complete conversion into 1,2,4,5-tetraoxane. In this study, seven novel tetraoxanes were synthesized and fully characterized. In addition, the activation in biomimetic conditions was performed using FeBr2, being the reaction followed by HPLC. Synthesized compounds were evaluated for their antiparasitic activity.
As doenças infeciosas causadas por vírus, parasitas e bactérias são atualmente a segunda maior causa de mortalidade a nível mundial. Um desses parasitas é a Leishmania spp., protozoário responsável pela leishmaniose. Esta doença é atualmente considerada a nona maior doença infeciosa a nível mundial já que afeta cerca de 12 milhões de pessoas em praticamente todos os continentes (Europa, África, América e Ásia). Apesar disso, o interesse por parte da indústria farmacêutica é diminuto sendo classificada como uma doença negligenciada. Encontra-se difundida tanto em áreas tropicais como em áreas subtropicais sendo considerada endémica em 98 países, segundo a Organização Mundial de Saúde (OMS). Esta doença afeta principalmente as populações mais pobres, em países em vias de desenvolvimento e é responsável por cerca de 30 000 mortes por ano, números que têm vindo a aumentar a um ritmo alarmante. A leishmaniose pode causar um amplo espectro de patologias em humanos, as quais podem variar em severidade desde uma forma relativamente benigna da doença, porém limitante, designada por leishmaniose cutânea, passando por uma variante que consiste num desfiguramento facial, como acontece na leishmaniose mucocutânea, podendo mesmo chegar a uma patologia potencialmente fatal, a leishmaniose visceral. A leishmaniose cutânea é a forma mais comum da doença, sendo que em cada 1,3 milhões de casos totais que surgem anualmente, 1 milhão são referentes à leishmaniose cutânea e apenas 0,3 milhões são relativos à leishmaniose visceral. Esta última, apesar de ser uma forma menos frequente da doença é a mais severa, podendo conduzir à morte se não for devidamente tratada. A leishmaniose mucocutânea representa a forma mais destrutiva da doença. Existem mais de 20 espécies de Leishmania consideradas infeciosas para o ser humano, entre elas estão a L. donovani, L. infantum, L. siamensis, L. braziliensis e L. guyanensis. A leishmaniose é transmitida através da picada de uma "sandfly" fêmea infetada pelo parasita, que normalmente pertence ao género Lutzomia no "Novo Mundo" (América Central e do Sul) e do género Phlebotomus no "Velho Mundo" (Europa, África e Ásia). Uma outra doença tropical é a malária cuja infeção é causada por parasitas do género Plasmodium spp., transmitidos aos humanos através da picada de um mosquito fêmea infetado pertencente ao género Anopheles. Existem seis espécies do parasita capazes de infetar humanos, tais como o P. falciparum, P. vivax, P. malariae, P. ovale, P. ovale wallikeri e P. knowlesi. De entre estas espécies o P. falciparum é a que origina a forma mais perigosa e fatal da malária e, em conjunto com o P. vivax são as espécies mais comuns. A malária é uma doença tropical que representa um dos problemas públicos mais preocupantes, já que, de acordo com a OMS, existem cerca de 212 milhões de novos casos por ano que conduzem a aproximadamente 430 000 mortes anuais, sendo que a maioria ocorre em África e em crianças com menos de cinco anos de idade. Para estas duas doenças tropicais a realidade é a mesma, já que não existem vacinas eficientes e o seu controlo encontra-se limitado ao uso de quimioterapia e à prevenção. Infelizmente, a quimioterapia atualmente utilizada para ambas as doenças é a mesma desde há várias décadas, por isso, o seu uso também se encontra limitado devido ao aparecimento de resistências, e ainda devido aos diversos efeitos secundários e ao seu elevado custo. Todas estas razões conduzem a uma procura urgente de novos agentes terapêuticos. É importante que as novas alternativas terapêuticas, para além de eficazes, sejam economicamente acessíveis, uma vez que estas doenças afetam principalmente os países em vias de desenvolvimento. Neste contexto surgem os endoperóxidos, que são uma família de compostos capazes de serem redutivamente ativados pelo ferro (II), levando à formação de espécies reativas de oxigénio, radicais centrados no carbono e compostos carbonílicos. Assim, os endoperóxidos podem atuar por diferentes mecanismos de ação. Por um lado, estes compostos têm a capacidade de aumentar o stress oxidativo dentro do parasita, podem ainda alquilar biomoléculas essenciais para a sobrevivência dos parasitas. Por outro lado, se se libertar o composto carbonílico , -insaturado, pode reagir como aceitador de Michael levando à inibição de enzimas necessárias à sobrevivência dos parasitas. Deste modo, estes compostos podem ser utilizados contra qualquer agente infecioso que disponha de elevadas concentrações de ferro em pontos críticos do seu ciclo de vida, tal como acontece com os parasitas dos géneros Leishmania e Plasmodium. Seguindo esta linha de raciocínio, nesta tese é reportada a síntese de uma pequena biblioteca de novos compostos 1,2,4,5-tetraoxanos que são capazes de atuar através de um mecanismo de dupla ação, uma vez que, após a ativação pelo ferro (II), irá formarse uma espécie radicalar, aumentando o stress oxidativo. Ao mesmo tempo, liberta-se uma molécula carbonílica , -insaturada, neste caso o trans-cinamaldeído, capaz de inibir a tripanotiona redutase (TR) no caso da Leishmania, e a falcipaína no caso do P. falciparum. Estas enzimas desempenham papéis cruciais nos parasitas, a TR participa na defesa antioxidante do parasita Leishmania, enquanto que a falcipaína é uma das enzimas presente no vacúolo digestivo do Plasmodium responsável pela hidrólise da hemoglobina. Estes 1,2,4,5-tetraoxanos são preparados com recurso a uma síntese em dois passos. No primeiro passo, os aldeídos ou cetonas reagem com ácido fórmico e com peróxido de hidrogénio dando origem ao intermediário gem-dihidroperóxido. O segundo passo usa o óxido de rénio (VII) como catalisador, para formar um complexo com o trans-cinamaldeído, que posteriormente é adicionado ao intermediário de modo a permitir a conversão no produto final 1,2,4,5-tetraoxano. Deste modo, o transcinamaldeído foi escolhido como segundo reagente por ser um composto alfa,beta-insaturado, podendo ser um potencial inibidor das enzimas TR e falcipaína. Assim, conseguiram-se sintetizar e purificar sete novos compostos híbridos (21-27) baseados na estrutura tetraoxano com rendimentos moderados a bons. Estes compostos foram ainda caracterizados utilizando-se técnicas de ressonância magnética nuclear, nomeadamente RMN 1H, RMN 13C, COSY, APT, HMQC e HMBC. De modo a confirmar a ativação pelo ferro (II) e a consequente libertação do composto , -insaturado, os compostos foram estudados em condições biomiméticas na presença de brometo de ferro (II), seguindo-se a reação por HPLC. Com estes estudos confirmou-se que o trans-cinamaldeído é libertado na presença de brometo ferroso, confirmando-se que o ferro (II) consegue ativar eficientemente esta classe de compostos. Todos os compostos apresentaram tempos de semi-vida curtos, o que indica que são rapidamente ativados pelo ferro (II). Estes estudos foram uma prova de conceito que mostraram que o composto carbonílico alfa,beta-insaturado é rapidamente libertado após a ativação dos tetraoxanos pelo ferro (II), sugerindo que estes endoperóxidos poderão ter comportamentos semelhantes in vivo. A capacidade antiparasitária dos tetraoxanos sintetizados foi avaliada para a malária e para a leishmaniose. Relativamente à malária, os compostos demonstraram ser moderadamente ativos, revelando melhores valores de inibição na gama do sub- M para a estirpe Dd2 do Plasmodium falciparum. A atividade dos compostos foi ainda testada para a forma promastigota de Leishmania donovani, porém, devido a problemas de solubilidade, nenhum dos compostos revelou atividade.
Chiang, Ji-Hong, and 蔣季宏. "A Study on the Nanowires Poly-Si TFT Nonvolatile Memory with Si3N4/Si-Nanocrystal/ Si3N4 Hybrid Trap Layer." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/01972962133466014266.
Full text"Computational Investigation of Spin Traps Using Hybrid Solvation Models." East Tennessee State University, 2009. http://etd-submit.etsu.edu/etd/theses/available/etd-0706109-153254/.
Full textLukášek, Dominik. "Srovnání kořenového systému hybridů trav xFestulolium s rodičovskými druhy." Master's thesis, 2016. http://www.nusl.cz/ntk/nusl-362634.
Full textHAN, CHENG-ZHI, and 韓承志. "A Hybrid Model of Tensor Factorization and Sentiment Utility Logistic Model for Trip Recommendation." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/257yee.
Full text國立臺灣科技大學
資訊管理系
106
This paper proposes a hybrid model of aspect-oriented sentiment prediction which integrates tensor factorization (TF) and sentiment utility logistic model (SULM). First, using sentiment dictionary words as seeds, the aspect or opinion words can be extended iteratively through double propagation. Accordingly, the users’ reviews could be represented as the features in user-item-aspect space, in which prediction model could be built. Various combinations of the hybrid model were proposed and evaluated on the Chinese reviews on places of interest at Taiwan Yilan from TripAdvisor. Experimental results show that the hybrid model can achieve better prediction performance than TF or SULM. The hybrid model also outperforms either TF or SULM while handling new user’s cold-start problem.
ROSI, SARA. "Interacting Bosons in optical lattices: optimal control ground state production, entanglement characterization and 1D systems." Doctoral thesis, 2015. http://hdl.handle.net/2158/1004929.
Full textLuu, Thi Phuong Mai. "Wetland Habitat Studies using various Classification Techniques on Multi-Spectral Landsat Imagery: Case study: Tram chim National Park, Dong Thap Vietnam." Master's thesis, 2009. http://hdl.handle.net/10362/2634.
Full textWetland is one of the most valuable ecological systems in nature. Wetland habitat is a set of comprehensive information of wetland distribution, wetland habitat types are essential to wetland management programs. Maps of wetland should provide sufficient detail, retain an appropriate scale and be useful for further mapping and inventory work (Queensland wetland framework). Remotely sensed image classification techniques are useful to detect vegetation patterns and species combination in the inaccessible regions. Automated classification procedures are conducted to save the time of the research. The purpose of the research was to develop a hierarchical classification approach that effectively integrate ancillary information into the classification process and combines ISODATA (iterative self-organizing data analysis techniques algorithm) clustering, Maximum likelihood and rule-based classifier. The main goal was to find out the best possible combination or sequence of classifiers for typically classifying wetland habitat types yields higher accuracy than the existing classified wetland map from Landsat ETM data. Three classification schemes were introduced to delineate the wetland habitat types in the idea of comparison among the methods. The results showed the low accuracy of different classification schemes revealing the fact that image classification is still on the way toward a fine proper procedure to get high accuracy result with limited effort to make the investigation on sites. Even though the motivation of the research was to apply an appropriate procedure with acceptable accuracy of classified map image, the results did not achieve a higher accuracy on knowledge-based classification method as it was expected. The possible reasons are the limitation of the image resolution, the ground truth data requirements, and the difficulties of building the rules based on the spectral characteristics of the objects which contain high mix of spectral similarities.