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1
Ng, yin-wang Colin. "Urban design for renewal a legible Mong Kok /." Click to view the E-thesis via HKUTO, 2009. http://sunzi.lib.hku.hk/hkuto/record/B42931113.
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Shum, Eugene, and 岑宇舜. "An urban focus: a multi purposes complex in Mong Kok." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1994. http://hub.hku.hk/bib/B31982153.
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Shum, Eugene. "An urban focus : a multi purposes complex in Mong Kok /." Hong Kong : University of Hong Kong, 1994. http://sunzi.lib.hku.hk/hkuto/record.jsp?B25945270.
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Ku, Yongli. "Chinese Investments and Conflict Resolution—A Case Study of Tasang (Mong Ton/Mai Dong) Dam, Myanmar." Thesis, Linnéuniversitetet, Institutionen för samhällsstudier (SS), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-56574.
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The aim of this research is to bridge the correlation of peace and foreign investments through the lens of North et al.’s (2013) Limited Access Orders (LAOs). The research seeks to engage in the discussion of LAOs by providing a perspective from analyzing Chinese investments under the context of New Silk Road policy with the case of Tasang Dam. Current discussion of LAOs does not involve how foreign investments affect institutional transition in LAOs. Therefore this research is a humble attempt to engage in the existing literature from a different perspective. Tasang Dam is designed to be built in southern Shan State, Myanmar, an area that has encountered continuous armed conflicts. The conflicts between the local armed group SSA-S/RCSS and the Tatmadaw continue even after a ceasefire agreement was signed in 2011. Chinese investors acting under the context of New Silk Road project have tried to involve in creating stability in the area to reduce costs. According to the LAOs logic, if the access to rents is open to armed organizations, there will be motivations for rival parties to avoid violence. In order to redistribute the resources, there should be an institutional transition. In Tasang Dam’s case, the rents created by Chinese investments are not available to SSA-S/RCSS, but with the Chinese investments as the democratization of Myanmar goes on, there are opportunities to alter the story of repeated violence.
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Tang, Hon-ting. "A study of Shi Daoxuan's (596-667) Guang Hongming Ji Shi Daoxuan "Guang hong mong ji" yan jiu /." Click to view the E-thesis via HKUTO, 1989. http://sunzi.lib.hku.hk/hkuto/record/B31949812.
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Low, Chien-tat, and 劉振達. "An exploratory study of environmental risk factors to elderly falls inHong Kong: a GIS case study of Mong Kok,2006-2007." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2008. http://hub.hku.hk/bib/B40887923.
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Low, Chien-tat. "An exploratory study of environmental risk factors to elderly falls in Hong Kong a GIS case study of Mong Kok, 2006-2007 /." Click to view the E-thesis via HKUTO, 2008. http://sunzi.lib.hku.hk/hkuto/record/B40887923.
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Lei, Mei Fong Susanna. "The translator's attitude in news translation :a case analysis of the Hong Kong Mong Kok Incident on the Chinese new year 2016." Thesis, University of Macau, 2018. http://umaclib3.umac.mo/record=b3954317.
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Pritchard-Wallis, Denise. "Mona maritime trail llwybr Mon a mor." Thesis, Bangor University, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.516128.
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Altarejos, Marina Obal. "Filipino basic ecclesial community between limitation and self-transcendence : a Lonergan-based elucidation of fundamental spirituality /." Nijmegen : Radboud University, 2008. http://webdoc.ubn.ru.nl/mono/a/altarejos_m/filibaecc.pdf.
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吳永順 and Wing-shun Anthony Vincent Ng. "Toward a low density urban form in Hong Kong." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1993. http://hub.hku.hk/bib/B31979890.
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Lau, Wai-keung. "Recreation planning and provision of urban open spaces for elderly in Hong Kong : a case study in Mongkok /." Hong Kong : University of Hong Kong, 1995. http://sunzi.lib.hku.hk/hkuto/record.jsp?B14803380.
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Sun, Wai-choi Sunny. "A feasibility study of switching from the diesel to petrol light road transport to improve the urban air quality in Hong Kong /." Hong Kong : University of Hong Kong, 1995. http://sunzi.lib.hku.hk/hkuto/record.jsp?B14723153.
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Do, Hoang Son. "Equations de Monge-Ampère complexes paraboliques." Thesis, Toulouse 3, 2015. http://www.theses.fr/2015TOU30113/document.
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Le but de cette thèse est de contribuer à la compréhension des équations de Monge-Ampère complexes paraboliques sur des domaines de Cn. Cette équation a un lien étroit avec le flot de Kähler-Ricci. Notre étude se concentre sur les cas où la condition initiale n'est pas régulière. Nous voulons démontrer l'existence de solutions satisfaisant la continuité jusqu'à la frontière et jusqu'au temps initialThe aim of this thesis is to make a contribution to understanding parabolic complex Monge-Ampère equations on domains of Cn. Our study is centered around cases where the initial condition is irregular. We want to prove the existence of solutions which satisfies continuity up to the boundary and continuity up to the initial time
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Ho, Sau-ling Connie, and 何秀齡. "Vertical adventure: a climbing gym in Mongkok." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1999. http://hub.hku.hk/bib/B31984599.
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Erkelenz, Michael. "Shelley's 'Mont Blanc' : a critical interpretation." Thesis, University of Oxford, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.306727.
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Strnad, Jakub. "Ocenění společnosti PKS MONT, a. s." Master's thesis, Vysoká škola ekonomická v Praze, 2010. http://www.nusl.cz/ntk/nusl-71927.
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The subject of establishing the market value is PKS MONT stock company specializing in the production of windows and doors made of plastic, wood and aluminum. It is a company founded in 1996 as a member of PKS holding companies which are targeting mainly on building sector. The mentioned company realized an important investment in modernization of production facilities in 2009. Size of the investment exceeded CZK 120 mil., more than 90 % total assets of the previous year. The market in which the company operates is undergoing a crisis due to the economy decrease. This situation has a negative impact on the indebted company. The main impact of decline in demand is expected in 2011, first year of financial plan. The financial plan is built on the current corporate financial policy and in many cases modified in response to predicted market developments with covering company possibilities to find permanent use in the increasing competition. The main purpose of the thesis is determination the company market value based on discounted free cash flows from business activities. Predicted free cash flows affected decline in demand in 2011 and necessity of permanent investments in modernization of production facilities in order to maintain technical and technological progress with competition and with the market. The financial plan forecast can help management to focus on possible scenario of future development and adapt it their next steps. Each project is based on assumptions and level of risk, which can act positively or negatively on the assumptions set. Therefore, the conclusion is devoted to risk analysis tests changes in result depending on probability distribution all analyzed assumptions.
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Tam, Hiu-yuen Cecilia, and 譚曉婉. "A new type of guest houses." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1999. http://hub.hku.hk/bib/B31984812.
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Preator, Robin. "Conceptual design studies of a mono tiltrotor." College Park, Md. : University of Maryland, 2005. http://hdl.handle.net/1903/3051.
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Thesis (M.S.) -- University of Maryland, College Park, 2005.Thesis research directed by: Dept. of Aerospace Engineering. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.
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Teves, Juliana Simões. "Edifício (mono)matéria. A percepção da madeira." Master's thesis, Faculdade de Arquitectura de Lisboa, 2011. http://hdl.handle.net/10400.5/4052.
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Tese de Mestrado em ArquitecturaPretende-se, através deste Relatório de Final de Mestrado, estudar a madeira e seus potenciais no campo da percepção, da estética e da técnica enquanto único material a ser utilizado na concepção do projecto final. Quer-se perceber que vantagens e contradições esta utilização traz na compreensão funcional, formal e de percepção tanto do edifício em si, na sua escala urbana, como dos seus espaços interiores. Intenta-se provar que os materiais escolhidos, como são tratados e como se os combina têm grande influência na forma como se experiência a arquitectura. Muitas vezes a resposta mais assertiva está no uso de técnicas e materiais ditos tradicionais de uma forma consciente, em prol de uma arquitectura que deve ser tratada para responder às necessidades contemporâneas e não a egos ou a uma sede desmesurada de explorar vários ou novos materiais com o intuito de enganar com impressões em vez de conquistar com experiências devidas. Acredita-se que less continua a ser more.
ABSTRACT - This “Relatório de Final de Mestrado” intends to study the wood and its potential in the field of perception, aesthetics and techniques as the only material to be used in the conception of the final project. It also wants to understand what advantages and contradictions this usage brings to the functional, formal and percept ional comprehension, both of the building itself in its urban scale and of the indoor spaces. It intends to show that the selected materials, the way they are treated and how they are combined have huge influence in the way the architecture is experienced. Many times, the most assertive response lies in the conscious use of traditionally considered techniques and materials, favouring an architecture that must be prepared to answer the contemporary needs and not to egos or to an enormous eagerness to explore several or new materials aiming to deceive with impressions, instead of conquering with relevant experiences. It is believed that less means more
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Flowers, Johnathan Charles. "Mono no Aware as a Poetics of Gender." OpenSIUC, 2018. https://opensiuc.lib.siu.edu/dissertations/1589.
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Traditional theories of gender performativity, grounded in the tradition of Judith Butler, fail to capture the experience of encountering a gendered subject. By reducing gender to a series of discursive acts and ignoring the aesthetic dimension of gender, these theories neglect the possibility for alternative gender performances divorced from the materiality of the body, except through acknowledging the ficticious nature of gender as a consequence of citational acts. In contrast, this dissertation presents a theory of gender as aware, or the “aboutness” that emerges through the repeated citational acts that make present gender in our lived experience. Gender, therefore, does not possess any ontological essence except insofar as it is articulated by citational practices, without which it cannot exist. To this end, this dissertation argues for an expansion of our discourse on gender through appealing to Japanese aesthetic and poetic concepts of aware and mono no aware to demonstrate the aesthetic nature of gender. In so doing this dissertation will present gender as fundamentally aesthetic through appeal to no, kabuki, and the Takarazuka Revue, all sites which divorced gender form biological sex for the purpose of an aesthetic praxis.
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Shrestha, Amit. "Development and Performance Evaluation of a Mono-Valve Engine." Available to subscribers only, 2009. http://proquest.umi.com/pqdweb?did=1879983291&sid=1&Fmt=2&clientId=1509&RQT=309&VName=PQD.
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Panisson, Eliane. "Gaspar Monge e a sistematização da representação na arquitetura." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2007. http://hdl.handle.net/10183/14314.
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Esta tese trata da contextualização da geometria descritiva como sistema de representação na arquitetura. Desenvolve-se a partir da desconstrução da Géométrie descriptive de Gaspard Monge, publicada em 1799, acompanhando a exposição de seu autor desde o conteúdo da capa até a sua última página, de onde são destacadas partes a serem estudadas entre os textos, desenhos e a própria apresentação da obra. Desconstruir a teoria mongeana apresenta-se relevante neste estudo por investigar sobre as lições dadas por Monge em 1799, que coexistem até o momento com outras representações, entretanto sem um questionamento e entendimento epistemológico. Considerando que existem distorções na exposição original das lições mongeanas em obras subseqüentes à Géométrie descriptive e que conceitos de representação determinam limites de compreensão do espaço que implicam na própria arquitetura, este estudo dá abertura de resignificação à teoria original de Monge no ensino de arquitetura.This thesis is about the descriptive geometry contextualization as an Architecture representation system. It was developed after Gaspard Monge’s Géométrie descriptive deconstruction, published in 1799, accompanying its author exposition since its cover content until its last page, form where parts are detached to be studied among the texts, draws and the own handiwork presentation. To deconstruct Monge’s theory is relevantly presented in this study for investigate Monge’s lessons taught in 1799 that coexists until this moment with different representations, without any question and epistemology understanding. Considering that there are distortions in the original Monge lessons exposition in Géométrie descriptive following handiwork and that its representation concepts determinate limits to the space comprehension that imply the Architecture itself, this study gives opening to Monge’s original theory resignification in the Architecture teaching.
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Behrens, Justin William. "Modification and Performance Evaluation of a Mono-valve Engine." OpenSIUC, 2011. https://opensiuc.lib.siu.edu/theses/638.
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AN ABSTRACT OF THE THESIS OF Justin W. Behrens, for the Master of Science degree in Mechanical Engineering, presented on June 24, 2011 at Southern Illinois University Carbondale. TITLE: MODIFICATION AND PERFORMANCE EVALUATION OF A MONO-VALVE ENGINE MAJOR PROFESSOR: Dr. Suri Rajan A four-stroke engine utilizing one tappet valve for both the intake and exhaust gas exchange processes has been built and evaluated. The engine operates under its own power, but has a reduced power capacity than the conventional 2-valve engine. The reduction in power is traced to higher than expected amounts of exhaust gases flowing back into the intake system. Design changes to the cylinder head will fix the back flow problems, but the future capacity of mono-valve engine technology cannot be estimated. The back flow of exhaust gases increases the exhaust gas recirculation (EGR) rate and deteriorates combustion. Intake pressure data shows the mono-valve engine requires an advanced intake valve closing (IVC) time to prevent back flow of charge air. A single actuation camshaft with advanced IVC was tested in the mono-valve engine, and was found to improve exhaust scavenging at TDC and nearly eliminated all charge air back flow at IVC. The optimum IVC timing is shown to be approximately 30 crank angle degrees after BDC. The mono-valve cylinder head utilizes a rotary valve positioned above the tappet valve. The open spaces inside the rotary valve and between the rotary valve and tappet valve represent a common volume that needs to be reduced in order to reduce the base EGR rate. Multiple rotary valve configurations were tested, and the size of the common volume was found to have no effect on back flow but a direct effect on the EGR rate and engine performance. The position of the rotary valve with respect to crank angle has a direct effect on the scavenging process. Optimum scavenging occurs when the intake port is opened just after TDC.
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Nilsson, Fredrik. "Vehicle Tracking with Heading Estimation using a Mono Camera System." Thesis, Linköpings universitet, Reglerteknik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-148495.
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Advanced driver assistance systems (ADAS) is a popular and evolving area of research and development. By providing assistance to the vehicle drivers, ADAS could significantly reduce the number of traffic accidents since 90 % of all accidentsare caused by the human factor. ADAS with cameras provides a wide field of view and thanks to today’s advanced image processing techniques, lots of informationcan be extracted from the camera image. This thesis proposes a method of estimating the heading of vehicles using a mono camera system. The method consists of an extended Kalman filter with a constant velocity motion model to predict the vehicle’s path, fed by classification measurements from machine learning algorithms together with angular rate measurements. Monte Carlo simulations performed in this thesis show promising results. The results on real-world data indicate that the method used to construct the angular rate measurements must be improved in order to reach the same results as obtained from the simulations. An additional measurement, the vehicle’s corners, is introduced in order to further provide the filter with information. The thesis shows that the mono camera system needs further improvements in order to reach the same level of performance as a stereo camera system.
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Fischer, Marie-Thérèse. "LE Mont Sainte-Odile et les Prémontrés : 1546 a 1797." Strasbourg 2, 1999. http://www.theses.fr/1999STR20059.
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Le mont sainte-odile n'est souvent percu que comme pelerinage alsacien. On a tendance a oublier qu'il fait partie integrante de l'histoire de l'ordre de premontre. Des 1178, herrade y institue des chapelains norbertins, venus d'etival en lorraine. Des religieux de cet ordre se maintiennent sur la montagne apres la fin de l'abbaye de hohenbourg et, en 1661, leur maison est erigee en residence autonome. Ce prieure ne disparaitra qu'avec la revolution. Il s'agit donc, tout en eliminant les << mythes historiques >> qui foisonnent sur la periode consideree (1546-1797), de mener simultanement l'etude du pelerinage et celle de la communaute, replacees dans le cadre des evenements politiques, militaires et religieux de leur epoque, avec une attention particuliere portee a ceux qui affectent l'ordrenorbertin. La premiere partie (1546-1696) suit une progression chronologique, rythmee par les destructions et reconstructions successives. La seconde (1697-1797) s'articule autour de themes varies : les divers religieux, l'origine et les pratiques des pelerins, les conflits, les relations avec le clerge diocesain comme avec les couvents voisins ou les laics, dont les villes, les livres composes par les premontres du mont sainte-odile, la pastorale - ancree dans le site -, le culte de sainte ete odile - qui doit beaucoup a des traditions heterogenes et a la synthese qu'en ont faite les religieux - ou des autres saints, etc. . . Elle s'acheve toutefois sur les evenements revolutionnaires. On a tente de reconstituer la biographie de certains chanoines, et surtout celle du plus prestigieux d'entre eux : dionysius albrecht, profes de l'abbaye de tepla en boheme, prieur de 1737 a 1755. Au long de ces deux siecles et demi d'histoire, quelques aspects sont regulierement pris en compte : les problemes linguistiques des premontres, la presence de pelerins << welsches >>, les relations avec les protestants, etc.
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Bradley, Cullen Philip. "LADAR: A Mono-static System for Sense and Avoid Applications." University of Dayton / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1366631049.
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Moffatt, Nicholas Andrew. "The simulation and integration of a mono-pressure nitric acid process." Thesis, Queen's University Belfast, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.317482.
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Donati, Antoine. "Planar polarization of a mono-ciliated epithelium : the zebrafish floor-plate." Electronic Thesis or Diss., Sorbonne université, 2019. http://www.theses.fr/2019SORUS078.
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La polarité cellulaire planaire (PCP) des cils motiles permet de générer des flux directionnels dans les cavités corporelles des animaux. Cependant les mécanismes de cette polarisation sont mal compris. Nous utilisons ici le plancher de poisson-zèbre pour étudier ces mécanismes. A l'aide d'échantillons fixés et d'imagerie sur embryon vivant, nous montrons que le positionnement postérieur des cils du plancher est progressif et asynchrone entre cellules voisines. Au cours du développement, les corps basaux (CB, centrioles à la base des cils) passent de plus en plus de temps en contact avec la membrane postérieure et arrêtent de toucher la membrane antérieure. Nous étudions aussi le rôle de Par3 dans ce processus. Nous trouvons que Par3 est enrichi à la membrane postérieure avant le positionnement postérieur des cils. Aux stades précoces, Par3 forme des îlots aux jonctions apicales et les CB touchent les membranes antérieures et postérieures uniquement au niveau de ces îlots. De plus la surexpression de Par3 perturbe la polarisation. Ces résultats suggèrent un rôle clef de Par3 dans la polarisation du plancher. Nous trouvons enfin que la polarisation des îlots de Par3 est perturbée dans le mutant de PCP vangl2, ce qui pourrait expliquer les défauts de polarisation du plancher de ces mutantsPlanar cell polarization (PCP) of motile cilia allows directional fluid flow generation within body cavities. However the mechanisms underlying PCP of ciliated epithelia are still poorly understood. Here we use the zebrafish floor-plate (FP) to investigate these mechanisms. Using both fixed samples and live-imaging, we show that asymmetric cilia positioning at the posterior side of FP cells is a progressive and asynchronous process between neighbouring cells. As development proceeds, basal bodies (BB, modified centrioles at the base of cilia) spend more time in contact with the posterior membrane and stop making contacts with the anterior membranes. We investigate the role of Par3 in FP cells polarization. We find that Par3 is enriched at the posterior membrane, before the asymmetric positioning of cilia. Strikingly, at early stages, Par3 accumulates as patches at the level of apical junctions and BB only contact anterior or posterior membranes at the level of these patches. In addition, Par3 over-expression disrupts FP PCP. These results strongly suggest that Par3 is a critical player in FP polarization. Finally we show that in zebrafish vangl2 PCP mutants, Par3 patches intensity and polarisation are disrupted, which could explain FP polarization defects. Since Vangl2 is anteriorly enriched in FP cells, this suggests an antagonistic relationship between Par3 and Vangl2
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Rao, Arvind Satya. "Weak solutions to a Monge-Ampère type equation on Kähler surfaces." Diss., University of Iowa, 2010. https://ir.uiowa.edu/etd/582.
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In the context of moment maps and diffeomorphisms of Kähler manifolds, Donaldson introduced a fully nonlinear Monge-Ampère type equation. Among the conjectures he made about this equation is that the existence of solutions is equivalent to a positivity condition on the initial data. Weinkove later affirmed Donaldson's conjecture using a gradient flow for the equation in the space of Kähler potentials of the initial data. The topic of this thesis is the case when the initial data is merely semipositive and the domain is a closed Kähler surface. Regularity techniques for degenerate Monge-Ampère equations, specifically those coming from pluripotential theory, are used to prove the existence of a bounded, unique, weak solution. With the aid of a Nakai criterion, due to Lamari and Buchdahl, it is shown that this solution is smooth away from some curves of negative self-intersection.
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Maneta, Georgia. "A Chair with a View : A Cultural Studies reading of Sue Monk Kidd’s The Mermaid Chair." Thesis, Högskolan Dalarna, Engelska, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:du-34427.
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Zein, Samir. "Etudes Theoriques des Composes a Transition de Spin mono- et bi-nucleaires." Phd thesis, Université Claude Bernard - Lyon I, 2005. http://tel.archives-ouvertes.fr/tel-00193882.
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Ce travail présente l'étude théorique des propriétés magnétiques de composés à transition de spin du fer(II) en fonction de la nucléarité des complexes et de la nature des ligands environnants.La corrélation entre la position des noyaux et les propriétés magnétiques des composés mononucléaires a été faite sur la base des calculs DFT du gap énergétique entre les différents états de spin. Ces études ont permis de tirer des nouvelles conclusions qualitatives quant au rôle du phénomène d'ordre-désordre dans les composés à transition de spin. Certaines paramètres thermodynamiques ont pu être évalué à travers les calculs des fréquences vibrationnelles.
L'étude de systèmes binucléaires présentant un couplage magnétique intramoléculaire a permis l'interprétation des différents comportements magnétiques de ces systèmes (pas de transition, transition en une seule étape ou deux étapes). L'application de l'approche DFT/broken symmetry a permit la quantification des constantes d'échange, difficile d'accès aux mesures magnétochimiques traditionnelles.
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Hebert, Joy A. Ms. "A Critical Study of Sue Monk Kidd's The Secret Life of Bees." Digital Archive @ GSU, 2011. http://digitalarchive.gsu.edu/english_theses/117.
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Sue Monk Kidd’s The Secret Life of Bees (2002) tells the story of a motherless fourteen-year-old Lily Owens, raised by a cruel father, who desperately searches for clues to unlock her mother’s past. Kidd’s bildungsroman reveals the incredible power of black women, particularly a group of beekeeping sisters and a black Mary, to create a safe haven where Lily can examine her fragmented life and develop psychologically, finally becoming a self-actualized young lady. Lily’s matriarchal world of influence both compares and contrasts with the patriarchal world represented in Mark Twain’s Adventures of Huckleberry Finn, exposing the matriarchy’s aptly structured ways of providing a more healing environment than is Huck Finn’s. Kidd’s novel also showcases the stylistic strategies of first person narrative point of view, language, dialect, and the motif of place in order to contextualize the social awareness and psychological development Lily gains through her journey.
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Wambach, Mona [Verfasser]. "Controlled drug delivery of L-Arginine from a polymer matrix / Mona Wambach." Aachen : Hochschulbibliothek der Rheinisch-Westfälischen Technischen Hochschule Aachen, 2013. http://d-nb.info/1038571200/34.
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Ferrari, Rubens. "Studio di fattibilità di un gomito protesico attivo a struttura mono-assiale." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2020. http://amslaurea.unibo.it/20255/.
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In questo elaborato si descrive l’attività di design di un’articolazione di gomito ad
azionamento mioelettrico, progetto nato da una collaborazione con IIT. L’obiettivo è stato
quello di creare un meccanismo in cui tutti le parti d’assieme fossero disposte lungo l’asse di
rotazione così da ridurre gli ingombri e il peso rispetto alle altre soluzioni attualmente
disponibili, fattori che aumentano il bacino dei pazienti potenzialmente trattabili. L’attività si
è concentrata sull’ideazione di un prototipo funzionale completo di tutti i componenti per
valutare le criticità e i punti di forza del sistema e aprire la strada a un futuro lavoro di
ottimizzazione.
Nel primo capitolo si introduce il concetto di protesica dell’arto superiore, descrivendo prima
l’anatomia e la biomeccanica dell’arto sano per poi focalizzarsi sulla classificazione delle
protesi, e in particolare di quelle mioelettriche.
Nel secondo capitolo vengono spiegati i metodi utilizzati in fase di progettazione
dell’articolazione protesica di gomito, si analizzano i razionali dello studio di fattibilità
iniziale, vengono definite le specifiche tecniche da ottenere e si descrivono le parti progettate
per completare l’assieme del meccanismo.
Nel terzo capitolo vengono illustrati i risultati della progettazione tramite un’analisi del
funzionamento del gomito assemblato.
Nel quarto capitolo trovano spazio le conclusioni e i possibili sviluppi futuri.
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Peres, Clóvis Belbute. "A matéria escura no centro dos aglomerados de galáxias : MOND e neutrinos." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2009. http://hdl.handle.net/10183/16780.
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Os aglomerados de galáxias são as maiores estruturas gravitacionais em situação de quase-equilíbrio, mas apesar dos esforços de pesquisa das últimas décadas, pouco conhecemos de suas estruturas e composição. Os recentes avanços teóricos e observacionais associados aos aglomerados de galáxias motivam essa proposta de pesquisa. Nosso foco é no entendimento da componente não-observada em aglomerados de galáxias. Especificamente, investigamos uma teoria de gravitação alternativa denominada Gravitação Newtonina Modificada (MOND) que pretende substituir o paradigma da matéria escura, mas que apresenta problemas quando aplicada aos centros dos aglomerados. Revisamos e sintetizamos o estado da arte na modelagem da Matéria Escura no centro desses objetos e testamos, em especial, uma proposta de solução dos problemas da MOND: a inclusão de neutrinos massivos. Ao mesmo tempo que testamos a teoria MOND + v,fazemos uma análise critica de como os limites às massas de neutrino são obtidos a partir de aglomerados.Clusters of galaxies are the largest structures in the universe in a quasi-equilibrium state, but, despite research efforts in the past decades, their structure and composition are still poorly understood. Recent theoretical and abservational advances in the understanding of these structures motivate the present research work. Our focus lies on the understanding of the non-luminous component af galaxy clusters. Specifically, we investigate an alternative gravitational theory named MOND, or Madified Newtonian Dynamics, which aims at replacing the dark matter (DM) paradigm, but presents problems when applied to the centers of galaxy clusters. We have reviewed and summarized the state of the art on the modeling of the dark matter in the centers of clusters of galaxies and tested a proposal of solution: the inclusion of massive neutrinos in the MOND scenario. Besides testing MOND + v, we have analised how limits are imposed on the neutrino mass via the study of clusters of galaxies.
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Ferreira, Mariane Gonçalves. "Herança da resistência de Solanum habrochaites a Phytophthora infestans (Mont.) De Bary." Universidade Federal de Viçosa, 2017. http://www.locus.ufv.br/handle/123456789/11697.
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Conselho Nacional de Desenvolvimento Científico e Tecnológico
A requeima, causada por Phytophthora infestans (Mont.) De Bary, é a principal doença foliar do tomateiro. No manejo dessa doença, a estratégia mais promissora é o desenvolvimento de cultivares resistentes, havendo, portanto, a necessidade do entendimento da herança associada à resistência. Em programas de melhoramento os estudos dos parâmetros genéticos auxiliam na escolha do melhor método de melhoramento a ser utilizado. Para estimação desses parâmetros são empregados dados observados em linhagens contrastantes (P 1 e P 2 ) e das gerações F 1 , F 2 , RC 1:1 e RC 1:2 . No entanto, a ocorrência de gene de efeito maior e poligenes dificultam os estudos de herança, uma vez que as metodologias, normalmente, utilizadas não detectam as diferenças entre esses genes. Assim, o objetivo desse trabalho foi estudar a herança da resistência do tomateiro a P. infestans, utilizando a função de verossimilhança para modelar e estimar parâmetros relativos aos efeitos de gene maior e poligenes. Os experimentos foram conduzidos na Horta Experimental do Departamento de Fitotecnia da UFV. Como genitor feminino foi utilizado a cultivar susceptível Santa Clara (Solanum lycopersicum) e como genitor masculino o acesso do Banco de Germoplasma de Hortaliças da UFV BGH 6902 (Solanum habrochaites f. glabratum), resistente a requeima. As plantas F 1 , originadas do cruzamento, foram autofecundas para obtenção da geração F 2 e com posterior retrocruzamento entre os genitores para obtenção das gerações RC 1:1 e RC 1:2 . A inoculação das plantas ocorreu aos 50 dias após o transplantio no campo. A severidade da doença foi avaliada por meio de notas, utilizando escala diagramática. Os testes foram realizados no programa estatístico Monogen v 0.1. Na determinação dos modelos genéticos por meio da função de verossimilhança, a significância dos efeitos que comparam os modelos evidencia que a herança da resistência a requeima em tomateiro é conferida por gene maior, com efeito aditivo e dominante mais poligenes, com efeito aditivo mais os efeitos ambientais. A resistência vertical pode ser explorada com a utilização dos genes de efeito maior. Programas de seleção recorrente e a seleção assistida por marcadores moleculares poderão auxiliar o emprego da resistência conferida pelos poligenes.
Late blight, caused by Phytophthora infestans (Mont.) De Bary is a major foliar disease affecting tomato crops. Among management strategies, the most promising is definitely the development of resistant cultivars. Therefore, it is necessary to understand how resistance to this disease is inherited in tomato plants. In breeding programs, studies of genetic parameters have helped plant breeders to choose the best breeding method to be used. To estimate these parameters, researchers make use of data collected from trials at which contrasting inbred lines (P 1 and P 2 ) and their respective F 1 , F 2 , BC 1:1 e BC 1:2 generations were evaluated. However, occurrence of a major-effect gene and polygenes make it difficult to study inheritance patterns since the methodologies that are commonly used do not detect differences between those genes. Therefore, this work aimed to study inheritance of resistance to P. infestans in tomato plants, by using the function of maximum likelihood estimation to modeling and estimating parameters associated to the effects of major genes and polygenes. Field experiments were conducted at the Horticulture Research Farm, owned by the Federal University of Viçosa’s (UFV) Department of Plant Science. The susceptible cultivar Santa Clara (Solanum lycopersicum) was used as the female genitor and the resistant late-blight S. habrochaites f. glabratum accession (BGH 6902), obtained from the UFV Vegetable Gene Bank, was used as the male genitor. F 1 plants from the crossing were selfed up to produce the F 2 progenies, and also backcrossed with P 1 and P 2 producing BC 1:1 and BC 1:2 generations, respectively. The tomato plants were inoculated 50 days after transplanting. Disease severity was evaluated by notes, using a diagrammatic scale. Statistic tests were performed by the Monogen v 0.1 program. By comparing the genetic models created by using the maximum likelihood function, it was concluded that inheritance of resistance to late blight in tomato is conferred by a major gene, with additive and dominant effects, and polygenes, with additive effects, plus the environmental effect. Vertical resistance can be explored by using genes of major effect. Programs of recurrent and maker-assisted selection are considered more efficient strategies in selecting genotypes that hold resistance to late blight conferred by polygenes.
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Ribeiro, Santana Menandro. "Monk: proposta de um motor de inferência híbrido para a web semântica." Universidade Federal de Pernambuco, 2010. https://repositorio.ufpe.br/handle/123456789/2314.
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Previous issue date: 2010Conselho Nacional de Desenvolvimento Científico e Tecnológico
Devido às limitações da Web Atua iniciou-se o desenvolvimento de uma evolução da Web, denominada Web Semântica. Nesta nova Web, o conteúdo e a apresentação das informações devem estar separados e representados em uma notação adequada as novas necessidades da comunidade digital. Devido a isso, várias áreas de pesquisa, como por exemplo, a representação do conhecimento e o raciocínio automático, estão trabalhando com o intuito de tornar a Web Semântica uma realidade. Normalmente, o conhecimento é formado por várias partes e nem sempre é possível representá-lo, apropriadamente, utilizando um único formalismo de representação. Devido a isso, sistemas que lidam com representações diferentes podem ser de grande ajuda. O objetivo deste trabalho é estudar formalismos de representação de conhecimento e métodos de raciocínio automático, para propor um motor de inferência híbrido, chamado MONK, que possa ser utilizado na Web Semântica. Para a criação do MONK foi utilizado como base o projeto do sistema MANTRA. Foram mantidos os algoritmos de unificação (Martelli e Montanari) e inferência (t-entailment), pois são algoritmos decidíveis e eficientes, mas a arquitetura foi modificada para facilitar a inclusão futura de novos formalismos, como Frames, Redes Semânticas e Lógica de Descrições (usada na OWL, que é a linguagem padronizada para a Web Semântica). O MONK dá ênfase a Lógica de Primeira Ordem (baseada em uma Lógica de Quatro Valores), tornando-a seu formalismo padrão. Com isso, desde que algum formalismo possua um mapeamento para a Lógica de Primeira Ordem, ele poderá ser suportado pelo MONK sem que seja necessário implementar novos algoritmos de raciocínio
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Sun, Wei. "On a Class of Complex Monge-Ampère Type Equations on Hermitian Manifolds." The Ohio State University, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=osu1366286119.
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Soavelomandroso, Anna P., Françoise Gaudin, Sandra Hoys, Valérie Nicolas, Gayatri Vedantam, Claire Janoir, and Sylvie Bouttier. "Biofilm Structures in a Mono-Associated Mouse Model of Clostridium difficile Infection." FRONTIERS MEDIA SA, 2017. http://hdl.handle.net/10150/626057.
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Clostridium difficile infection (CDI) is a major healthcare-associated disease with high recurrence rates. Host colonization is critical for the infectious process, both in first episodes and in recurrent disease, with biofilm formation playing a key role. The ability of C. difficile to form a biofilm on abiotic surfaces is established, but has not yet been confirmed in the intestinal tract. Here, four different isolates of C. difficile, which are in vitro biofilm producers, were studied for their ability to colonize germ-free mice. The level of colonization achieved was similar for all isolates in the different parts of the murine gastrointestinal tract, but pathogen burden was higher in the cecum and colon. Confocal laser scanning microscopy revealed that C. difficile bacteria were distributed heterogeneously over the intestinal tissue, without contact with epithelial cells. The R20291 strain, which belongs to the Ribotype 027 lineage, displayed a unique behavior compared to the other strains by forming numerous aggregates. By immunochemistry analyses, we showed that bacteria were localized inside and outside the mucus layer, irrespective of the strains tested. Most bacteria were entrapped in 3-D structures overlaying the mucus layer. For the R20291 strain, the cell-wall associated polysaccharide PS-II was detected in large amounts in the 3-D structure. As this component has been detected in the extrapolymeric matrix of in vitro C. difficile biofilms, our data suggest strongly that at least the R20291 strain is organized in the mono-associated mouse model in glycan-rich biofilm architecture, which sustainably maintains bacteria outside the mucus layer.
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Liu, Tianyi. "Control strategy for a mono-inverter multi-PMSM system - Stability and efficiency." Phd thesis, Toulouse, INPT, 2017. http://oatao.univ-toulouse.fr/19624/7/tianyi_liu.pdf.
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During these decades, Permanent Magnet Synchronous Motor (PMSM) has become a vital part of military, industry and civil applications due to the advantages of high power density, high efficiency, high reliability and simple structure, small volume and light weight. Sometimes, multiple PMSMs are used to carry out cooperative functions. For example, the bogie of a locomotive, the flight control surface of an airplane. These PMSMs usually operates at the same speed. To reduce the volume and weight, an idea of sharing the static power conversion devices, which is called Mono-Inverter Multi-PMSM system (MIMPMSM), is raised. Although many researchers have given different controller solutions for the MIMPMSM system, most of them are not clear in the aspects of system stability and efficiency issues. This has become the biggest obstacle to the practical use of MIMPMSM. Oriented with these problems, starting with a MIMPMSM system with 2 motors, in the first step, we have tested some control strategies by an experiment to verify the feasibility and performance of them. In final, based on the experiment data, we have figured that the overconstraint problem exists in some control strategies. Then, an analysis and controller design based on steady-state model of a Mono-Inverter Dual-PMSM (MIDPMSM) system is carried out.By studying the solution existence problem of the steady-state model, we give out the design guideline to the controller structure. Combining the open-loop stability and steady-state solution, the region of controllability and stability is obtained. Lagrange Multiplier is used develop theexpression of efficiency-optimal steady-staterelated to torque and speed. The experiment has shown that the efficiency of the new controller has improved significantly. Meanwhile, we have explored the influence of parameter variation in system stability and efficiency-optimization. The variation will influence the stability region. But its influence can be eliminated by using Master- Slave strategy. On the other hand, in the aspect of efficiency optimization, the simulation results have shown that parameter mismatch, especially the permeant flux, can cause high efficiency loss. In the last step, this controller is also adapted to a MIMPMSM system with more than two motors. The simulation results demonstrate the effectiveness.
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Boeke, Nick R. "Pastoral leadership in the transition of a mono-ethnic church to a multi-ethnic church." Online full text .pdf document, available to Fuller patrons only, 2001. http://www.tren.com.
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Angerville, Ruth. "Evaluation des risques écotoxicologiques liés au déversement de Rejets Urbains par Temps de Pluie (RUTP) dans les cours d'eau : Application à une ville française et à une ville haïtienne." Phd thesis, INSA de Lyon, 2009. http://tel.archives-ouvertes.fr/tel-00446988.
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Les Rejets Urbains par Temps de Pluie (RUTP) contiennent des polluants sous forme soluble ou particulaires, issus du lessivage des bassins-versants qu'ils drainent. Ces rejets sont le plus souvent déversés dans les milieux récepteurs, en particulier les cours d'eau péri-urbains, sans traitement préalable. Il en résulte, dans certaines configurations, un risque de toxicité pour les écosystèmes des milieux concernés. Cette thèse propose deux démarches méthodologiques pour évaluer les risques écotoxicologiques (EDREcotox) liés à un tel scénario: une démarche a priori et une démarche a posteriori. La démarche a priori a été développée selon 3 approches complémentaires de caractérisation des effets écotoxicologiques: i) une «approche substances», ii) une «approche substances avec effets combinés» et iii) une «approche matrice». Cette démarche a priori a été par la suite appliquée à un scénario d'une ville française et à un scénario d'une ville haïtienne. Pour une optimisation de la méthodologie proposée dans le cadre de la démarche a priori, nous avons procédé, dans un premier temps, à une étude de l'écotoxicité et des effets combinés des principaux polluants généralement présents dans les RUTP, vis-à-vis de Daphnia magna puis de Pseudokirchneriella subcapitata. En ce qui concerne l'«approche matrice», nous avons procédé à une caractérisation écotoxicologique d'échantillons de RUTP provenant des 2 sites étudiés. La démarche a posteriori a été développée sur la base d'une comparaison entre un «état amont» et un «état aval», par rapport au point de déversement des RUTP dans la rivière du site français, pour 3 horizons (eau de surface, zone benthique et zone hyporhéique). L'application de ces 2 démarches méthodologiques a conduit à des résultats cohérents qui mettent en évidence un risque important pour les organismes du cours d'eau récepteur, avec une accentuation de ce risque pour les organismes des zones benthique et hyporhéique. Au titre des perspectives, la poursuite du développement de ces premières méthodologies pourra prendre en compte certains aspects additionnels comme la biodisponibilité des polluants, leur bioaccumulation, etc.
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Brum, Alessandra Souza Melett. "Hiroshima Mon Amour e a recepção da critica no Brasil." [s.n.], 2009. http://repositorio.unicamp.br/jspui/handle/REPOSIP/284097.
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Orientador: Antonio Fernando da Conceição PassosTese (doutorado) - Universidade Estadual de Campinas, Instituto de Artes
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Resumo: O primeiro longa-metragem de Alain Resnais Hiroshima Mon Amour foi lançado em circuito comercial no Brasil em 1960, ano seguinte a sua estreia na França. O filme causou grande impacto entre a crítica especializada motivando inúmeros artigos em jornais e revistas. É em torno do amplo e rico material produzido pela crítica brasileira, motivada pelas inovações estéticas introduzidas pelo cineasta francês que essa pesquisa se desenvolve. A recepção crítica a Hiroshima Mon Amour irá refletir as transformações pela qual o cinema passava na época, adquirindo importância nos debates em torno do fazer e do pensar cinematográfico.
Abstract: The first Alain Resnais feature film, Hiroshima Mon Amour was issued in commercial circuit in Brazil in 1960, the year following their debut in France. The film has caused great impact on the specialized criticism motivating many articles in newspapers and magazines. This research embrace the abundant material produced by the Brazilian critic, which was motivated by aesthetic innovations introduced by French filmmaker. The criticizing reception to Hiroshima Mon Amour will reflect the changes that went through the cinema at the time, gaining importance in debates around the making and cinematographic thought.
Doutorado
Multimeios
Doutor em Multimeios
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D'Almada-Remedios, Michael Joseph. "Active stabilization and hull-form optimization of a high speed mono-hulled powerboat." Thesis, Nottingham Trent University, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.293276.
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Bianco, Susan. "A black monk in the rose garden : Lydgate and the dit amoureux tradition." Thesis, University of York, 1999. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.313858.
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Picard, Sebastien. "A priori estimates of the degenerate Monge-Ampère equation on compact Kähler manifolds." Thesis, McGill University, 2013. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=119756.
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The regularity theory of the degenerate complex Monge-Ampère equation is studied. First, the equation is considered on a compact Kahler manifold without boundary. Accordingly, some background information on Kahler geometry is presented. Given a solution of the degenerate complex Monge-Ampère equation, it is shown that its oscillation and gradient can be bounded. The Laplacian of the solution is also estimated. There is a slight improvement from the literature on the conditions required in order to obtain the estimate on the Laplacian of the solution, however the estimates developed only hold in the case of manifolds with non-negative bisectional curvature. As an application, a Dirichlet problem in complex space is considered. The obtained estimates are used to show existence and uniqueness of pluri-subharmonic solutions to the degenerate complex Monge-Ampere equation in a domain in complex space.La question de la régularité des solutions de l'équation complexe Monge-Ampère dégénérée est étudiée. Premièrement, l'équation est considérée sur une variété compacte Kahler sans frontière. Une revue des concepts clés de la géométrie Kahler est présentée. Étant donné une solution de l'équation complexe Monge-Ampère dégénérée, il est démontré que la différence entre la borne supérieure et la borne inférieure de la solution est sous contrôle, et ainsi pour le gradient de la solution. Le Laplacien de la solution est également bornée. Cette borne du Laplacien est une amélioration de ce qui a été établi dans la littérature jusqu'à présent, mais par contre, l'argument tient seulement sous la condition que la variété a une courbure non-négative. Les résultats sont appliqués à un problème de Dirichlet dans l'espace complexe. L'existence et l'unicité d'une solution pluri-subharmonique de l'équation complexe Monge-Ampère dégénérée dans un domaine contenu dans l'espace complexe est démontré.
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Franco, Cilene Meinberg. "Pesquisa experimental sobre a polimerização via radical livre com iniciadores mono e difuncional." [s.n.], 2006. http://repositorio.unicamp.br/jspui/handle/REPOSIP/266156.
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Orientador: Liliane Maria Ferrareso LonaDissertação (mestrado) - Universidade Estadual de Campinas. Faculdade de Engenharia Quimica
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Resumo: Iniciadores mono funcionais são largamente utilizados em polimerizações VIa radical livre. Muitas vezes, na busca de maiores produtividades, utilizam-se temperaturas de operação mais elevadas e/ou maiores concentrações iniciais de iniciador, que por conseqüência, geram polímeros com pesos moleculares mais baixos. O uso de iniciadores difuncionais permite o aumento da produtividade sem a redução no peso molecular do produto final, o que pode ser urna característica desejável. A pesquisa com iniciadores difuncionais é atual e de grande interesse industrial. O objetivo deste trabalho é analisar o efeito da funcionalidade do iniciador, no caso mono e difuncional, sobre a polimerização via radical livre, considerando corno caso estudo um polímero linear, o poliestireno, e um ramificado, o poli (acetato de vinila). Para isso, foram feitas, experimentalmente, reações de polimerização em ampolas de vidro (polimerização em massa), com o iniciador mono funcional (Luperox TBEC) e o di funcional (Luperox 531). Foram analisados também o efeito da temperatura de polimerização e a concentração de iniciador. Também neste trabalho é apresentado um estudo estatístico através de um Planejamento Fatorial, a fim de analisar o efeito das variáveis temperatura e concentração de iniciador na polimerização do estireno com iniciador difuncional. Observou-se, tanto para o estireno corno para o acetato de vinila, que quando utilizado o iniciador difuncional é possível obter conversões maiores, sem alterar o peso molecular médio mássico e numérico, sendo que em alguns casos pode se até obter um aumento no peso molecular. O uso de iniciador di funcional é também mais viável economicamente, pois apresenta melhores resultados frente ao monofuncional, mesmo quando utilizado em concentrações ou temperaturas menores do que as utilizadas com o iniciador mono funcional. É importante salientar o caráter inovador desta pesquisa, já que não foram encontrados, em literatura aberta, dados experimentais da polimerização do acetato de vinila (ou outro monômero que produza ramificações de cadeia longa) utilizando iniciadores difuncionais
Abstract: Monofunctional initiators are extensively utilized in free radical polymerization. In order to increase productivity, higher temperature or higher initial initiator concentration are used, therefore polymers with lower molecular weights are obtained. Bifunctional initiators increase the polymerization rate without decreasing the average molecular weight and this can be desirable. They are an important issue to be investigated and are of great interest to industries. The objective of this work is to analyze the effect of the functionality of the initiator, by using mono and bifunctional, in free radical polymerization, for linear polymer (poly styrene) and branched polymer (poly(vinyl acetate)). Polymerizations were experimentally performed in glass ampoules (bulk polymerization) using both mono(Luperox TBEC) and bi- (Luperox 531) functional initiators. The effects of temperature and initiator concentration were also analyzed for various polymerization conditions. This work includes a statistical study using the factorial design to analyze the effect of temperature and initiator concentration in styrene polymerization with bifunctional initiator. It is observed in this study, that high conversions with no effect in the molecular weigh of the dead polymer can be achieved using bifunctional initiators in the polymerization of styrene and vinyl acetate. In many cases, it is possible to obtain higher molecular weights. Bifunctional initiator can also be used to provide reduction costs to initiators. They showed better results than the monofunctional initiator when lower concentration or temperature lower were utilized.
Mestrado
Desenvolvimento de Processos Químicos
Mestre em Engenharia Química
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Medina, Eduardo Ferreira. "Algumas respostas de mono- e dicotiledôneas a auxinas associadas à ação do etileno." Universidade Federal de Viçosa, 2013. http://locus.ufv.br/handle/123456789/4336.
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Previous issue date: 2013-02-27The auxins IAA (indole-3-acetic, natural), 2,4-D (2,4-dichlorophenoxyacetic acid) and 2,4,5-T (2,4,5-trichlorophenoxyacetic acid, the latter two synthetic) were sprayed on corn (Zea mays, monocot) and beans (Phaseolus vulgaris, dicot), in order to investigate some differential responses of the two plant groups as associated to ethylene metabolism. Corn plants treated with the auxins did not produce ethylene, not exhibiting also any senescence symptom. Beans plants, on the other hand, produced large amounts of ethylene following treatment with auxins. Aminoethoxyvinylglycine (AVG) plus Co2+ (ethylene biosynthesis inhibitors) were not able to relieve the epinasty, drying and leaf wrinkling effects in bean plants, but leaf yellowing was considerebly reduced, suggesting this was an ethylene effect. Following spraying with auxins, corn plants showed no production of 1-aminocyclopropane-1-carboxylic acid (ACC), a response shown by beans plants. Therefore in the monocot, auxins seemed not to induce the expression of ACC synthase (ACS) or its activity. When treated with ACC, corn plants failed to produce any trace of ethylene, unlikely bean plants. This suggested that in monocot, auxins seemed also not to induce the expression or activity of ACC oxidase (ACO) or the enzyme is not activated. Potassium ferrocyanide, employed as a source of cyanide ions, was much more toxic to bean plants than to corn and so the monocot seemed to be more resistant than bean plants. Maximum quantum yield of photosystem II (Fv/Fm) and photosynthetic pigments contents kept unchanged in corn plants treated with the auxins. Bean plants showed significant decreases in both variables following spraying with 2,4-D and 2,4,5-T. Decreases in chlorophyll contents in bean plants treated with 2,4-D and 2,4,5-T correlated well with leaf chlorosis what was shown to be due to a more pronounced fall of chlorophyll contents rather than to an increase in carotenoid contents. The xanthophylls (neoxanthin, violaxanthin and anteraxantina) also showed a higher degradation than the alpha and beta carotenes in bean plants treated with 2,4-D and 2,4,5-T. When AVG and Co2+ were supplied together with auxin, no appreciable decrease in either the Fv/Fm ratio or pigment contents was observed, with the exception of alpha carotene. Also the ratio of chlorophyll a to chlorophyll b was also larger in bean plants treated with 2,4-D and 2,4,5-T than in the plants treated with 2,4-D and 2,4,5-T plus AVG and Co2+. The ratio of chlorophyll a to chlorophyll b did not show any significance in bean plants upon treatment with IAA.
As auxinas AIA (ácido indol-3-acético, natural), 2,4-D (ácido 2,4-diclorofenoxiacético) e 2,4,5-T (ácido 2,4,5-triclorofenoxiacético, as duas últimas sintéticas) foram aplicadas em plantas de milho (Zea mays, monocotiledônea) e feijão (Phaseolus vulgaris, dicotiledônea), visando investigarem-se algumas respostas diferenciais dos dois grupos em relação ao metabolismo do etileno. Plantas de milho tratadas com as auxinas não produziram etileno e não exibiram quaisquer sintomas de senescência e epinastia. O feijão produziu bastante etileno após tratamento. Quando se utilizou aminoetoxivinilglicina (AVG) mais Co2+ (inibidores da biossíntese de etileno), a epinastia das plantas de feijão foi mantida mas o amarelecimento das plantas mostrou-se reduzido, deduzindo-se ser o amarelecimento um sintoma da ação do etileno. Após pulverização com as auxinas, o milho não exibiu produção do ácido 1-carboxílico-1- amino-ciclopropano (ACC), fato observado no feijão. Assim, na monocotiledônea, as auxinas parecem não induzir a expressão da sintase do ACC (ACS) ou, pelo menos, sua atividade. Quando tratadas com o ACC, as plantas de milho não produziram qualquer traço de etileno, ao contrário as plantas de feijão. Daí deduzir-se que na monocotiledônea, as auxinas parecem também não induzir a expressão ou atividade da oxidase do ACC (ACO) ou a enzima não é ativada. Empregando-se K4Fe(CN)6 como fonte de íons cianeto, as plantas de milho pareceram se mostrar mais resistentes à intoxicação do que as plantas de feijão. O rendimento quântico máximo de fotossistema II (razão Fv/Fm) e os níveis dos pigmentos fotossintéticos não sofreram alterações em plantas de milho tratadas com as auxinas. As plantas de feijão mostraram quedas significativas em ambas variáveis após pulverização com 2,4-D e 2,4,5-T, mas não com o AIA. A redução nos níveis das clorofilas em plantas de feijão tratadas com 2,4-D e 2,4,5-T relacionou-se com a clorose observada, desde que ocorreu uma degradação mais acentuada das clorofilas do que dos carotenoides. As xantofilas (neoxantina, anteraxantina e violaxantina) também sofreram uma degradação mais acentuada do que o alfa e beta caroteno em plantas de feijão tratadas com 2,4-D e 2,4,5-T. Quando AVG e Co2+ foram fornecidos conjuntamente com as auxinas, não ocorreu queda na razão Fv/Fm e nem no nível dos pigmentos, com exceção do alfa caroteno. A razão entre clorofila a e clorofila b também mostrou-se maior nas plantas de feijão tratadas com 2,4-D e 2,4,5-T do que nas plantas tratadas com 2,4-D e 2,4,5-T mais AVG e Co2+. Nas plantas tratadas com AIA o aumento na razão entre clorofila a e clorofila b não foi significativo.
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Ramírez, Flores Mauricio Andrés. "Susceptibilidad de cultivares de vid (Vitis vinifera L.) a Diplodia mutila (Fr.) Mont." Tesis, Universidad de Chile, 2014. http://repositorio.uchile.cl/handle/2250/148287.
Full textAbstract:
Memoria para optar al Título Profesional de Ingeniero AgrónomoLa frecuencia de síntomas debido al ataque de hongos de la madera de la vid, ha aumentado significativamente en todo el mundo durante la última década. Las especies fungosas de la familia Botryosphaeriaceae provocan la muerte parcial de la planta, disminuyendo la productividad y la rentabilidad del cultivo. Una de las especies presentes en Chile es Diplodia mutila, asociada principalmente a la enfermedad del brazo muerto de la vid. El objetivo de esta investigación fue evaluar la susceptibilidad de sarmientos de cultivares de vid vinífera (Cabernet Franc, Malbec, Merlot, Sauvignon Blanc y Syrah) y de mesa (Crimson Seedless, Flame Seedless, Red Globe y Thompson Seedless) a D. mutila. Para ello, se realizó un ensayo “in vivo” usando sarmientos de un año, los cuales fueron inoculados con discos de agar con micelio de D. mutila, en el sector medio del entrenudo después de producir una herida. Los sarmientos fueron mantenidos en una cámara de crecimiento durante cuatro a seis semanas, en oscuridad, a una humedad relativa del 95% y a una temperatura de 25°C. Se consideraron 10 repeticiones por cultivar y al término del período de incubación, se evaluó la longitud de la lesión necrótica en forma independiente, en los cultivares viníferos de los de mesa. No se encontraron diferencias estadísticamente significativas al comparar la susceptibilidad de los cultivares viníferos y de mesa investigados, los que en su totalidad fueron susceptibles al patógeno.
The frequency of symptoms associated to fungal attack on grapevine trunk, increased significantly worldwide during the last decade. Fungal species belonging to the Botryosphaeriaceae family are responsible for the death of part of the plant, reducing productivity and profitability of this crop. Diplodia mutila is one of the species associated to the dead arm disease of grapevine in Chile. The objective of this research was to evaluate the susceptibility of vine shoots of wine grape cultivars (Cabernet Franc, Malbec, Merlot, Sauvignon Blanc and Syrah) and table grapes (Crimson Seedless, Flame Seedless, Red Globe and Thompson Seedless) to D. mutila. In vivo trials were performed using one year old vine shoots, inoculated with mycelia disks of D. mutila between the internode after performing a wound. The shoots were kept during four to six weeks in a growth chamber, in the dark, at 95% relative humidity and at 25 ° C. Ten replicates per cultivar were considered, where necrotic lesion length was evaluated. No significant differences were observed on susceptibility among wine and table grape cultivars, being all susceptible to the pathogen.