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Dissertations / Theses on the topic 'AG29'

Author: Grafiati

Published: 4 June 2021

Last updated: 13 February 2022

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1

Paola, Tubino Bardales Beatriz. "Gestión De Calidad En Agronegocios-AG29-201201." Universidad Peruana de Ciencias Aplicadas (UPC), 2012. http://hdl.handle.net/10757/629106.

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El curso es de carácter teórico-práctico y busca capacitar al alumno de la carrera en el manejo de los principales procesos asociados a la seguridad alimentaria. Los contenidos temáticos tienen por finalidad que los estudiantes obtengan un conocimiento sólido sobre los sistemas de calidad en alimentos manejándolos con visión empresarial y valorándolos como fuente de ventaja competitiva para las organizaciones.

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2

Joaquin, Larrea Castro Hernani. "Trabajo De Campo 1-AG19-200902." Universidad Peruana de Ciencias Aplicadas (UPC), 2009. http://hdl.handle.net/10757/629095.

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El curso de Trabajo de Campo 1 es de carácter práctico y busca proporcionar al alumno de la carrera de Administración y Agronegocios los conocimientos básicos acerca del sistema de agronegocios así como las estrategias de asociatividad y competitividad desarrolladas a nivel local.

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3

Erdem, Rengin. "Ag2s/2-mpa Quantum Dots." Master's thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12614384/index.pdf.

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Quantum dots are fluorescent semiconductor nanocrystals that have unique optical properties such as high quantum yield and photostability. These nanoparticles are superior to organic dyes and fluorescent proteins in many aspects and therefore show great potential for both in vivo and in vitro imaging and drug delivery applications. However, cytototoxicity is still one of the major problems associated with their biological applications. The aim of this study is in vitro characterization and assessment of biological application potential of a novel silver sulfide quantum dot coated with mercapto

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4

Fateixa, Sara Isabel Augusto. "Nanoestruturas de Ag2S : síntese e propriedades antifúngicas." Master's thesis, Universidade de Aveiro, 2007. http://hdl.handle.net/10773/2989.

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Mestrado em Química Analítica e Controlo de Qualidade<br>Esta tese descreve a investigação realizada sobre a actividade antifúngica de nanocompósitos de SiO2/Ag2S e TiO2/Ag2S. Assim, prepararam-se primeiramente os nanocompósitos pelo crescimento de nanofases de Ag2S na superfície de partículas submicrométricas de SiO2 e TiO2. O Ag2S foi obtido pela decomposição do complexo dietilditiocarbamato de prata (I) na presença de 1,2-diaminopropano. Os nanocompósitos obtidos (SiO2/Ag2S e TiO2/Ag2S) foram caracterizados por várias técnicas que mostraram nanocristais de Ag2S (acantite) distribuídos sobre

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5

Zeru, Tadios Tesfu. "Festkörperelektrochemische Untersuchungen an mikro- und nanostrukturiertem Ag2S und Ag2Se." [S.l. : s.n.], 2004. http://deposit.ddb.de/cgi-bin/dokserv?idn=971843538.

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6

Moodelly, Davina. "Synthèse et caractérisation de nanocristaux fluorescents chalcopyrites et Ag2S." Thesis, Université Grenoble Alpes, 2020. http://www.theses.fr/2020GRALV001.

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Depuis leurs découvertes dans les années 1980, les quantum dots ou nanocristaux fluorescents de matériaux semi-conducteurs ont attiré beaucoup d’attention grâce à leurs propriétés photophysiques exceptionnelles facilement modulables en fonction de leurs tailles et leurs compositions. Premiers à être découverts, les quantum dots binaires comme le CdS, CdSe, et PbS sont les plus étudiés pour les applications optoélectroniques comme dans les LEDs ou le photovoltaïque. Il faudra attendre jusqu’à 1998 pour démontrer les premières applications biomédicales des QDs de CdSe/CdS et CdSe/ZnS utilisés in

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7

Lucilha, Adriana Campano. "Nanocristais de ZnO e Ag-Ag2O-ZnO : síntese, caracterização heterogênea." Universidade Estadual de Londrina. Centro de Ciências Exatas. Programa de Pós-Graduação em Química, 2011. http://www.bibliotecadigital.uel.br/document/?code=vtls000184639.

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Dentre os processos de oxidação avançados (POAs), a fotocatálise heterogênea mediada por óxidos semicondutores como ZnO e TiO2 tem sido muito efetiva na remoção de cor com baixo nível de contaminante. As caracterizações estruturais e morfológicas dos fotocatalisadores utilizados neste processo são importantes, pois o conhecimento da composição da camada superficial do sólido, viabiliza a compreensão da capacidade de adsorção e de fotocatálise. Este trabalho tem como objetivo sintetizar e caracterizar nanocristais de ZnO e Ag2O-ZnO obtidos em diferentes temperaturas e aplicar na fotocatálise do

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8

Botti, Luca. "Mechanochemical solvent-free synthesis of Sn-β Zeolite and Ag2O/TiO2 catalysts". Master's thesis, Alma Mater Studiorum - Università di Bologna, 2016. http://amslaurea.unibo.it/11941/.

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Preparations of heterogeneous catalysts are usually complex processes that involve several procedures as precipitation, crystallization and hydrothermal treatments. This processes are really dependent by the operative conditions such as temperature, pH, concentration etc. Hence the resulting product is extremely affected by any possible variations in these parameters making this synthesis really fragile. With the aim to improve these operations has been decided to exploit a new possible strong environment-respectful process by mechanochemical treatment, which permits to carry out solvent fre

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9

Almeida, Wágner Moreira de. "Síntese e avaliação da atividade fotocatalítica do Ag2O/TiO na degradação de corante." Universidade Estadual da Paraíba, 2012. http://tede.bc.uepb.edu.br/tede/jspui/handle/tede/1794.

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Made available in DSpace on 2015-09-25T12:19:48Z (GMT). No. of bitstreams: 1 Wagner Moreira de Almeida.pdf: 1432955 bytes, checksum: 9f9e1908144e3a096cc5d323e4c426a2 (MD5) Previous issue date: 2012-08-31<br>Conselho Nacional de Desenvolvimento Científico e Tecnológico<br>Titanium dioxide (TiO2) shows significant catalytic, optical and electronic properties, being used as constitutional material to capacitors, pigments and solar cells, as well as, applied as catalyst for photodegradation of organic matter. Thus, this work aims to obtain TiO2 and Ag-doped TiO particles, under several calcina

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10

Peterson, Christopher. "Evaluation of Therapeutics for an Enterovirus 71 Infection in an AG129 Mouse Model." DigitalCommons@USU, 2018. https://digitalcommons.usu.edu/etd/7278.

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Discovered in 1969 in California, enterovirus 71 (EV-71) is a serious cause of disease in young children. It is one of the major causative agents of hand, food, and mouth disease (HFMD), and can produce neurological complications, such as meningitis, encephalitis, and an acute flaccid paralysis. For serious cases, the fatality rate can be up to 26%, almost exclusively in young children. While the virus was initially discovered in the United States, it was soon detected in the Eastern hemisphere, causing outbreaks in Europe and Asia. The largest outbreak occurred in Taiwan in 2008, with approxi

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11

Kévin, Galliez. "Étude et compréhension du piégeage irréversible de l'hydrogène à l'aide d'un mélange MnO2/Ag2O." Phd thesis, Université de Nantes, 2012. http://tel.archives-ouvertes.fr/tel-00763925.

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La sûreté du risque hydrogène généré par radiolyse de matériaux organiques lors d'une phase de transport de déchets est une problématique majeure dans le domaine du nucléaire. L'utilisation de piégeurs irréversibles de H2 est envisagée afin de limiter le risque encouru. Le but de ce travail est d'étudier l'un de ces piégeurs, le mélange MnO2/Ag2O, afin de mieux comprendre le phénomène de piégeage. Dans un premier temps, différents paramètres influant sur la cinétique e piégeage ont été étudiés. Il a ainsi été déterminé que, parmi les différentes variétés allotropiques d'oxydes de manganèse, la

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Galliez, Kévin. "Etude et compréhension du piégeage irréversible de l'hydrogène à l'aide d'un mélange MnO2/Ag2O." Nantes, 2012. http://www.theses.fr/2012NANT2048.

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La sûreté du risque hydrogène généré par radiolyse de matériaux organiques lors d’une phase de transport de déchets est une problématique majeure dans le domaine du nucléaire. L’utilisation de piégeurs irréversibles de H2 est envisagée afin de limiter le risque encouru. Le but de ce travail est d’étudier l’un de ces piégeurs, le mélange MnO2/Ag2O, afin de mieux comprendre le phénomène de piégeage. Dans un premier temps, différents paramètres influant sur la cinétique e piégeage ont été étudiés. Il a ainsi été déterminé que, parmi les différentes variétés allotropiques d’oxydes de manganèse, la

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13

James, Andrew Moray. "Molecular beam laser spectroscopy of the molecules Cu2, CuAg and Ag2." Thesis, University of Edinburgh, 1990. http://hdl.handle.net/1842/12278.

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Transition metal clusters were generated by laser vaporisation in the throat of a pulsed supersonic expansion. Detection was accomplished by pulsed laser photoionisation in the source of a time-of-flight mass spectrometer (University of Edinburgh), or by laser-induced fluorescence (LIF) using a ring dye laser (National Research Council of Canada, Ottawa). A variety of metal cluster systems from the first and second transition periods were probed using laser photoionisation time-of-flight mass spec-trometry. Resonant two photon ionisation (R2PI) spectroscopy was performed on the A «— X system o

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14

Sefing, Eric. "Modulation of the Host Response to Tacaribe Arenavirus Infection in AG129 Mice by MY-24." DigitalCommons@USU, 2012. https://digitalcommons.usu.edu/etd/1395.

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MY-24 is an aristeromycin derivative previously shown to protect AG129 type I and II interferon receptor knockout mice from lethal challenge with Tacaribe virus (TCRV). TCRV is nonpathogenic to humans, but is closely related to the highly pathogenic New World arenaviruses that cause often-fatal viral hemorrhagic fever syndromes. Remarkably, MY-24 prevented mortality without reducing TCRV burden in the circulation or tissues. To investigate the mechanism by which MY-24 protects AG129 mice against TCRV infection, we first characterized the natural history of disease in the model with an emphasis

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15

Butler, Andrew Michael. "Mass-resolved resonant two-photon ionisation spectroscopy of jet-cooled Cu2 and Ag2." Thesis, University of Edinburgh, 1990. http://hdl.handle.net/1842/27635.

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Clusters of the transition metals were generated by laser vaporisation of a sample of the metal into the throat of a pulsed supersonic expansion. This allowed clusters with internal temperatures as low as 5 K to be routinely prepared. Mass-selective detection was accomplished by multi-photon ionisation of the clusters within the ion source of a time - of - flight mass spectrometer. Use of a tunable laser to carry out electronic excitation, prior to ionisation, allowed mass - resolved resonant two - photon ionisation spectra of the clusters to be recorded. Real time control of the experiment an

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16

CASTRO, Kelly Pacheco de. "Caracterização de um Antígeno Rico em Prolina(PRA/Ag2) do fungo patogênico humano Paracoccidioides brasiliensis." Universidade Federal de Goiás, 2008. http://repositorio.bc.ufg.br/tede/handle/tde/1283.

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Made available in DSpace on 2014-07-29T15:16:35Z (GMT). No. of bitstreams: 1 Kelly Pacheco de Castro.pdf: 746240 bytes, checksum: b56c21e04b1a4191824bfab81746d0d2 (MD5) Previous issue date: 2008-01-31<br>The dimorphic fungus Paracoccidioides brasiliensis is the causative agent of the most frequent systemic mycosis in Latin America. In humans, infection starts by inhalation of fungal propagules, which reach the pulmonary epithelium and differentiate into the yeast parasitic phase. Here we describe the characterization of a proline-rich protein (PRA/Ag2) homologue of P. brasiliensis, a predict

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17

Massote, Daniel Vasconcelos Pazzini. "Estudo de novos nanomateriais por primeiros princípios: confinamento de oxigênio em nanotubos, camadas de AgSH, Ag2S e filmes finos ferroelétricos." Universidade Federal de Minas Gerais, 2015. http://hdl.handle.net/1843/BUBD-9WAKJU.

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In this thesis, we employed first principles calculations based on the Density Functional Theory to investigate proposals of novel nanostru tured compounds. We have treated three distinct problems. In a rst work, we investigated the en apsulation of O2 mole ules within fullerenes and narrow nanotubes. We showed the self-assembly of these mole ules in lusters, and the alignement of su h lusters along the nanotube axis, forming linear hains. We hara terized su h stru tures and we ondu ted mole ular dynami s simulations to perform stability tests. The se ond one is related to two dimensional stru

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18

Rein, Alexander [Verfasser]. "Einfluss von Grenzflächen auf die Phasenbreite von nichtstöchiometrischen Verbindungen am Beispiel des Ag2+deltaS / Alexander Rein." Gießen : Universitätsbibliothek, 2013. http://d-nb.info/1065320310/34.

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19

Ozbek, Murat Olus. "Computational Study Of Ethylene Epoxidation." Phd thesis, METU, 2011. http://etd.lib.metu.edu.tr/upload/12613856/index.pdf.

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This work computationally investigates the partial oxidation of ethylene (i.e. ethylene epoxidation) using periodic Density Functional Theory (DFT) on slab models that represent the catalyst surfaces. The mechanical aspects of the reaction were investigated on silver surfaces, which are industrially applied catalysts, for a wide range of surface models varying from metallic surfaces with low oxygen coverage to oxide surfaces. For comparison, the metallic and oxide phases of copper and gold were also studied. On these surfaces, the reaction paths and the transition states along these paths for

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20

Silva, Alessandra Furtado da. "Construção de eletrodos Ag/Ag2S de configuração convencional, com membrana sinterizada e não sinterizada, para determinação potenciométrica de sulfeto em fluxo." Florianópolis, SC, 2003. http://repositorio.ufsc.br/xmlui/handle/123456789/78649.

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Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matematicas. Programa de Pós-Graduação em Química.<br>Made available in DSpace on 2012-10-17T17:22:28Z (GMT). No. of bitstreams: 1 199796.pdf: 524517 bytes, checksum: ac4eefabb16e3d2a178a89dddb88fa0c (MD5)<br>O comportamento dos eletrodos seletivos a íons sulfeto, construídos em laboratório, foi estudado e comparado com o eletrodo comercial. O processo de construção envolve cabo coaxial, placa de prata, membrana sensora e tubo de vidro. Os eletrodos confeccionados possuem dois tipos de membrana: sinte

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21

Rozier, Patrick. "Modifications structurales engendrées par l'action d'un métal alcalin (Li) ou d'un oxyde métallique (Ag2O) sur le pentoxyde de vanadium. Corrélation structure-propriété électrochimique." Toulouse 3, 1996. http://www.theses.fr/1996TOU30204.

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Cette etude traite de la comprehension du mode d'action du lithium et de l'oxyde d'argent sur le pentoxyde de vanadium et de la correlation des structures des produits obtenus avec leurs proprietes electrochimiques. L'etude de l'insertion du lithium dans le v#2o#5 a des temperatures proches de l'ambiante montre qu'elle debute par la mise en ordre du cation dans le reseau hote. La rupture de cet ordre, intervenant pour un taux en lithium x superieur a 0,5, n'est que partielle. Elle est associee au glissement des feuillets les uns par rapport aux autres. L'extrapolation de ce glissement pour de

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22

Boughaled, El Lakhmissi Soukaina [Verfasser]. "Combining photocatalytic water treatment and fuel synthesis: improving the activity of TiO2 by cobalt - doping and Ag/Ag2O - deposition / Soukaina Boughaled El Lakhmissi." Hannover : Gottfried Wilhelm Leibniz Universität, 2021. http://d-nb.info/1241245797/34.

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23

Gollino, Felipe. "Mecanismo de condução elétrica na interface do α-Ag2WO4 e do α-Ag2-xWO4 com nanopartículas de Ag na superfície." Universidade de São Paulo, 2015. http://www.teses.usp.br/teses/disponiveis/75/75134/tde-26102015-115201/.

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O projeto tem como proposito estudar o comportamento elétrico da microestrutura e interface de tungstato de prata e do tungstato de prata com nanoparticulas de prata focando em uma possível aplicação como dispositivo eletrônico. Os rods de α-Ag2WO4 foram sintetizadas utilizando o método hidrotermal assistido por microondas e posteriormente submetidas a um feixe de elétrons fazendo com que os íons de prata Ag+, dentro do bulk do cristal, sejam reduzidos e migrem para a superfície do material crescendo as partículas metálicas. A nucleação desses filamentos podem ser visualizado ao vivo e i

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24

Lenda, Ben Jemaa Dalizar. "Nouveaux matériaux pour l’optique non linéaire : synthèses et études structurales et vibrationnelles de quelques phases cristallisées et vitreuses appartenant aux systèmes TeO2-Tl2O-Ag2O et TeO2-Tl2O-CeO2." Limoges, 2010. http://aurore.unilim.fr/theses/nxfile/default/c38dc7e7-f1af-4955-abf9-22eed3396fc3/blobholder:0/2010LIMO4050.pdf.

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Les tellurites de thallium sont bien connus pour leurs performances non linéaires, nous avons souhaité par ajout d'un troisième oxyde leur conférer des propriétés de luminescence. Le domaine vitreux et les caractéristiques physiques des ternaires TeO2-Tl2O-Ag2O et TeO2-Tl2O-CeO2 ont été déterminés. L'étude structurale des verres par diffusion Raman a mis en évidence une transformation des groupements TeO4 en entités TeO3 avec l'ajout de Tl2O et Ag2O. Une nouvelle phase AgTlTeO3 a été mise en évidence. Sa structure et ces propriétés diélectriques ont été déterminées. Les phases Tl2TeO3, Ag2TeO3

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25

Grigoletto, Eliane Maria. "Propriedades de tração e de fadiga isotermica de uma junção de cobre com as ligas Sn63-Pb37, Sn62-Pb36-Ag2 e Sn42-Bi58." [s.n.], 2003. http://repositorio.unicamp.br/jspui/handle/REPOSIP/264986.

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Orientador: Itamar Ferreira<br>Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia Mecanica<br>Made available in DSpace on 2018-08-03T20:42:05Z (GMT). No. of bitstreams: 1 Grigoletto_ElianeMaria_D.pdf: 20156618 bytes, checksum: 238e025731557bafac4b6144402fb6be (MD5) Previous issue date: 2003<br>Resumo: As ligas de estanho-chumbo são usadas para soldar componentes eletrônicos sobre placas de circuito impresso. O chumbo e seus compostos são substâncias tóxicas e a indústria eletrônica deverá eliminar este metal do processo de soldagem. A solda, contato permanente entr

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Al-asbahi, Adnan Ali. "Identification And Cloning Of Genes Induced And / Or Repressed Upon Treatments Of Wheat Plants (avocet S) With Bth, Baba And Trichoderma Harzianum Raifi Krl-ag2." Phd thesis, METU, 2006. http://etd.lib.metu.edu.tr/upload/12607811/index.pdf.

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One of the major problems concerning the production of food crops is the controlling of plant diseases to maintain the high quality and yield. Wheat diseases are caused by parasitic bacteria, fungi and viruses that are a major hazard in wheat production. Therefore, understanding of any resistance mechanism is prerequisite for the successful utilization of wheat crop species in modern agriculture. The phenomenon of induced resistance by fungi, bacteria, microbial elicitors and chemicals has been investigated widely and resulted in many discoveries that conclude a general realization that the d

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Anees, Muhammad. "Temporal dynamics of components of the microflora, including Trichoderma sp. In relation to patch development of the disease incited by Rhizoctonia solani AG2-2 in a sugar-beet field." Dijon, 2009. http://www.theses.fr/2009DIJOS019.

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Afin d'identifier des mécanismes impliqués dans le développement des foyers causés par Rhizoctonia solani AG2-2 sur betteraves, des échantillons de sol ont été prélevés le long de transects traversant des zones infectieuses et des zones saines dans un champ cultivé en betteraves sucrières. Le potentiel infectieux et la résistance du sol aux maladies dues à R. Solani ont été mesurés et comparés. Le sol devient résistant au sein des foyers. L'analyse des structures de communautés bactériennes et fongiques par des méthodes génétiques et biochimiques ont mis en évidence l'émergence de Trichoderma

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Chang, Yi-Hung, and 張翼泓. "Synthesis and Characteristics of Ag, Ag2S and Ag2(S, Se) Nanoparticles." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/87882981325062266874.

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碩士<br>遠東科技大學<br>機械研究所<br>97<br>In this study, Ag nanoparticles were prepared by thermal decomposition synthesis to achieve a control of particles size (5 nm - 18 nm) and homogeneity. AgNO3, Ag(Oleic), and AgSR were used as precursors to fabricate Ag nanoparticles, adding with 1-Hexadecylamin or Oleylamine surfactants in various concentrations. The connection between particle characteristics and different surfactants with various concentrations was explored. Due to Surface Plasmon Resonance (SPR) of Ag, absorbance maximum is observed in the UV-vis spectra. In general, the peak position of SPR i

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Lyu, Lian-Ming, and 呂煉明. "Synthesis of Ag2O Nanocrystals with Systematic Shape Evolution, Investigation of Their Facet Stability to Chemical Etching, and the Formation of Ag2S Nanocages Using the Ag2O Nanocrystal Templates." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/92053617997839314162.

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博士<br>國立清華大學<br>化學系<br>100<br>Silver(I) oxide (Ag2O) is a p-type semiconductor with a reported band gap of 1.46 eV. Ag2O has the same cubic cuprite crystal structure as that of Cu2O. In the first project, we have successfully developed a facile procedure for the synthesis of Ag2O nanocrystals with systematic shape evolution from cubic to octahedral and hexapod structures by adjusting the amounts of NH4NO3, AgNO3, and NaOH solutions added to make the reaction mixture, while keeping their molar ratios constant. The crystals are mostly sub-micrometer-sized. X-ray diffraction, scanning electro

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Tang, Tsung-Yeh, and 湯宗曄. "Preparation and photocatalytic activity of Ag2O nps and Ag2O/Ag-ZnO nano-composites." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/48145774380481253382.

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Golaszewski, Devon. "Reproductive Labors: Women’s Expertise and Biomedical Authority in Mali, 1935-1999." Thesis, 2020. https://doi.org/10.7916/d8-ag2j-b274.

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Over the 20th century, Malians relied on local reproductive specialists: excisers (who oversaw initiation and circumcision ceremonies), nuptial counselors (who provided sexual education at marriage), and midwives. These older women’s work remained vital to social conceptions of proper reproduction, even as the biomedical maternal health system expanded, and Malians adjusted to new forms of religiosity and new ideas of status. Reproductive Labors: Women’s Expertise and Biomedical Authority in Mali 1935-1999 traces how, as biomedical care expanded over the 20th century, women and their families,

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LI, BING-SHIUAN, and 李秉軒. "Preparation and Characterization of Ag2S Nanostructures." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/89590993678850538267.

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碩士<br>國立中正大學<br>化學暨生物化學研究所<br>104<br>We focus on studying the organic-phase synthetic route to nanoparticles in order to control their particle size, shape and homogeneity. Thermal decomposition of organometallic precursor (hafc)Ag(PMe3) under certain conditions provids the uniform spherical silver nanoparticles in our previous study. In this work, we probe into the one-step and two-step synthetic routes to silver sulfide nanoparticles in order to control their sizes and shapes and homogeneity. In one-step system, we use thiol as surfactant which can control particle size, shape, and provi

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Cheng, Kai-Yu, and 鄭凱予. "Ag2S sensitized WO3 photoelectrodes for solar cells." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/84536343613023939157.

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碩士<br>國立中興大學<br>物理學系所<br>101<br>Ag2S quantum dots were produced using successive ionic layer adsorption and reaction (SILAR) of Ag(NO3) and Na2S. The quantum dots were synthesized on a nanoporous WO3 electrode. Passivation treatments including a TiO2 under layer and Pt counter-electrode were used. The optical properties of the Ag2S quantum dots were characterized by UV-vis spectroscopy. Polysulfide was used as the electrolyte. The best cell yields a short-circuit current of 5.81 mA/cm2, an open circuit voltage of 0.21V, a fill factor of 25.54% and a power conversion efficiency of 0.312 % at on

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Dias, Catarina José Loureiro da Silva. "Memristive Ag2S Synapses: Towards Artificial Neural Networks." Dissertação, 2013. https://repositorio-aberto.up.pt/handle/10216/69087.

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PAN, KUEI-LIN, and 潘奎霖. "Preparation and characterization of Ag2S quantum dots." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/d62bm8.

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碩士<br>逢甲大學<br>化學工程學系<br>106<br>In this thesis, aqueous phase synthesis method is used to prepare silver sulfide quantum dots (Ag2S QDs), AgNO3 is used as the silver source (precursor), 3-mercaptopropionic acid (3-MPA) is used as the terminal ligand, and sodium sulfide (nine) Hydration) is a sulfur source, using a concentration of 1M NaOH (aq) as a pH stabilizer, at different reaction temperatures (30 ° C or 50 ° C), different reaction times (1 to 3 hours), different silver and sulfur molar ratio (4:1 or 6:1) and the concentration of different capping ligands were used to prepare silver sulfide

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Dias, Catarina José Loureiro da Silva. "Memristive Ag2S Synapses: Towards Artificial Neural Networks." Master's thesis, 2013. https://repositorio-aberto.up.pt/handle/10216/69087.

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Tsai, Hung-Yi, and 蔡虹驛. "Photocatalytic Enhancement in ZnO-Ag2O Core-shell NanorodHeterostructure." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/26877074227361567968.

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碩士<br>國立清華大學<br>材料科學工程學系<br>102<br>Ag2O thin film, which possessed 2.42eV optical band gap, were deposited on glass and silicon substrates by RF magnetron sputtering using silver target under 25% oxygen flow ratios, 170°C substrate temperature, 50W sputtering power and 5 mTorr working pressure. The influence of oxygen flow ratio and substrate temperature on the structural, morphological, electrical, and optical properties of deposited Ag2O films was investigated. Increasing oxygen partial pressure during sputtering decreases the crystallinity of Ag2O due to oxidation of large portion of the me

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Tseng, Chien-Chih, and 曾建誌. "Deposition and characterization of Cu2O and Cu2O-Ag2O films." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/58573222275204341231.

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博士<br>國立中興大學<br>材料科學與工程學系所<br>101<br>Cu2O is a P-type semiconductor with a direct band gap and it has a high optical transparency at wavelength above 500 nm and with a high absorption coefficient at the wavelength below. The oxide semiconductor is a non-toxic material, and having a low production cost. The theoretical photo-electrical conversion efficiency of 20% makes it possible to be used as an absorber layer in thin film solar cells. According to a recent report, Cu2O-based oxide heterojunction solar cells with higher than 6% conversion efficiency have been fabricated. This opens up a new

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Fu, Chang-Lun, and 傅昌倫. "Synthesis and Characterization of Polyaniline/Ag2S-CdS Nanocompsites for Supercapacitors." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/91174811286736579359.

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碩士<br>國立中興大學<br>化學工程學系所<br>103<br>A series of Ag2S-CdS nanocomposites (AC21, AC11, and AC12) were developed by the reaction of silver nitrate and cadmium acetate in different molar ratios (2:1, 1:1, and 1:2). Chemical structure, morphology, and thermal properties of these nanocomposites were studied by using the FTIR spectroscopy, SEM and TEM, X-ray diffractometer, X-ray photoelectron spectroscope (XPS), and TGA ananlyzer, respectively. SEM and TEM indicated that the nanoparticle sizes of Ag2S and CdS were not larger than 1 m. The presence of the diffraction peaks evidenced the crystalline

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Kuo, Meng, and 郭孟. "Polyaniline/Ag2S-CdS Nanocomposites for Counter Electrodes of Dye-Sensitized Solar Cells." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/64029173649963298269.

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碩士<br>國立中興大學<br>化學工程學系所<br>104<br>In this study, we prepared Ag2S-CdS nanocomposites (AC11) with equal mole of silver nitrate and caladium acetate by the chemical co-precipitation. SEM and X-ray diffraction meter (XRD) were used to study the morphology of AC11. Moreover, the AC11 and polyaniline (PANI) based nanocomposite PACI was prepared by the in-situ polymerization of aniline in the AC11 containing reaction solution. The AC11 nanoparticles were dispersed in uniform in the PANI based nanorods. In addition, the AC11 and PANI based nanocomposite PACO was prepared by the co-precipitation o

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Chang, Ru-Chun, and 張如君. "Formation of Ag2S Nanoparticle/ZnO Nanowire Composites For Use In Solar Cells." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/61322077590697227282.

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碩士<br>國立成功大學<br>化學工程學系碩博士班<br>97<br>The influences of the Au- and Pt-precoated layer on pulsed current electrodeposition of ZnO nanorods on ITO substrates have been investigated using electroanalyting methods. Compared to Pt-precoated and bare ITO substrates, the Au-precoated ITO substrate has less charging current and more positive potential than that of H2 formation in the nucleation stage at a current density of -2mAcm-2. High-density ZnO nanorods are therefore deposited on the Au-precoated ITO substrate. The Ag2S nanoparticles (NPs) have been successfully prepared on ZnO nanowires (NWs) us

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Chiou, gwo-ching, and 邱國卿. "Magnetic levitation and friction of Y1Ba2Cu3O7 superconductor with different proportion of Ag2O." Thesis, 1997. http://ndltd.ncl.edu.tw/handle/48759301869506042806.

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碩士<br>淡江大學<br>物理學系<br>85<br>This thesis is intended to find and how Ag2O in the Superconductors Y1Ba2Cu3O7 effect the magnetic levitation force and magnetic friction force . We made ten samples . Five of these are ceramic specimens , in which the percentages of Ag2O in Y123 are respectively 0%, 2%, 5%, 10% and 15% . The other five are epoxy specimens with the percentages of Ag2O in Y123 are also respectively 0%, 2%, 5%,10% and 15% . From the five ceramic specimens, we found that the specim

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Dai, Zih-Jyun, and 戴子鈞. "Syntheses, Characterizations and Applications of Mesoporous Zeolite-Confined Ag2S Nanoparticles and Graphene Oxide." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/wp9yzy.

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Tseng, Jian-Shun, and 曾建順. "Photoelectrochemical properties of polycrystalline Ag2S/In2S3thin film electrodes prepared by chemical bath deposition." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/aa4je8.

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碩士<br>國立臺北科技大學<br>資源工程研究所<br>96<br>In this study, Ag2S/In2S3 films were deposited on indium tin oxide coated glass (ITO) substrates by chemical bath deposition (CBD). Silver nitrate, indium nitrate, ammonia nitrate, triethanolamine and thioacetamide were used as the sources of Ag+, In3+, buffer solution, complex agent and S2-, respectively. The films were prepared by two-step method. Firstly Ag2S thin film was deposited on ITO substrate and covered with In2S3 film the following step. After annealing, the crystallinity of the films turned to AgIn5S8 or AgInS2 due to the different thickness of I

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[Verfasser], Tadios Tesfu Zeru. "Festkörperelektrochemische Untersuchungen an mikro- und nanostrukturiertem Ag2S und Ag2Se / von Tadios Tesfu Zeru." 2004. http://d-nb.info/971843538/34.

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Jia-WenRuan and 阮佳玟. "Investigation of the electrochemical properties of Ag2O-MnO2 as electrode materials for supercapacitors." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/12434059420198091837.

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Chen, Ying Jui, and 陳映瑞. "Synthesis of Diverse Ag2O Crystals for Facet-Dependent Photocatalytic Activity and Electrical Conductivity Measurements." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/63860029766919584011.

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碩士<br>國立清華大學<br>化學系<br>104<br>Abstract Sub- to micrometer-sized Ag2O cubes, great rhombicuboctahedra, cuboctahedra, corner-truncated octahedra, octahedra, and rhombic dodecahedra have been synthesized at room temperature using simple molar ratios of NH4NO3, NaOH, and AgNO3 solutions with a short reaction time. In addition, tuning the concentration of NH3 in the solution can provide more particle morphologies including edge- and corner-truncated cubes, small rhombicuboctahedra, and edge-truncated octahedra to enrich Ag2O shape diversity. X-ray photoelectron spectroscopy (XPS) spectra indicate s

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Yang, Qiao Guang, and 楊喬光. "Studies on the characteristics and metal-contacted interface of YBa2Cu4O8 bulk with addition of Ag2O." Thesis, 1994. http://ndltd.ncl.edu.tw/handle/37330342069294770734.

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Kuo, Yen-Chien, and 郭言謙. "Photon Harvest Enhance of Dye-Sensitized Solar Cells Using Au@Ag/Ag2S Core-Shell Nanocomposites." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/49415785113130361297.

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碩士<br>東海大學<br>化學系<br>103<br>Colloidal dispersions of Au and Ag noble metals have been extensively studied because of their unique property of Surface Plasmon Resonance (SPR) absorption band in the visible region and their widespread use in applications related to photonics, catalysis, information storage, chemical/biological sensing, and surface-enhanced Raman scattering (SERS). Owing to several attractive advantages of Dye-sensitized solar cells (DSSCs) such that preparation is simple, and ingredients are accessible, much research has been devoted to improve the efficiency of DSSCs. The objec

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TSAI, WEI-CHE, and 蔡維哲. "Application of Fe3O4@ZnS-CuS and CuS@Ag2S for Photocatalytic H2 Production and Solar Steam Generation." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/u7b4hk.

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碩士<br>逢甲大學<br>化學工程學系<br>107<br>For the first part of this study, the Fe3O4@ZnS-CuS composite photocatalyst was prepared. CuS nanoparticles were decorated on Fe3O4@ZnS particles for the synthesis of magnetically separable photocatalysts with magnetic Fe3O4 core, together with heterojunction interfaces between ZnS and CuS. The electron-hole spatial separation ability and photocatalytic activity can be improved by optimizing the amount of CuS grown on ZnS. The highest photocatalytic H2 generation activity of the Fe3O4@ZnS-CuS photocatalyst reached 18000 μmol·g-1·h-1. The crystalline property, mor

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