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1
Silva, MoisÃs Tolentino Bento da. "A sobrecarga aguda cardÃaca advinda de fÃstula aorto-caval retarda o esvaziamento gÃstrico de lÃquidos em ratos acordados." Universidade Federal do CearÃ, 2008. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=2740.
Full textAbstract:
CoordenaÃÃo de AperfeiÃoamento de Pessoal de NÃvel SuperiorTendo em vista que o comportamento motor do trato gastrointestinal parece ter intima relaÃÃo com a atividade do sistema cardiovascular, decidimos verificar se a redistribuiÃÃo do volume sanguÃneo atravÃs de fistula aorto-caval com agulhas de calibres (21, 23 ou 26G) afeta a motilidade do trato gastrintestinal em ratos acordados. Ratos machos albinos (230 a 280g) foram divididos em grupos falso-operado (FO) ou com fÃstula designados (F), alÃm disso, tiveram grupos fÃstula+sangria (FS), fÃstula+vagotomia (FV) bem como fÃstula+esplancnotomia (FE), todos estudados com 24 horas apÃs a confecÃÃo da fistula com agulha (21G). Os parÃmetros hemodinÃmicos de pressÃo arterial mÃdia (PAM), freqÃÃncia cardÃaca (FC), e pressÃo venosa central (PVC) foram monitorados continuamente e o dÃbito cardÃaco (DC) determinado por termo-diluiÃÃo. ApÃs os procedimentos cirÃrgicos os ratos FO e os (F) tiveram os parÃmetros hemodinÃmicos e o esvaziamento gÃstrico (EG) estudados nos tempos pÃs-prandial (10, 20 ou 30min.). A PA dos ratos (F) tiveram valores inferiores (p < 0,05) quando comparados aos FO (116,3  3,5 vs 101,3  3,3mmHg). Por outro lado, nos ratos (F) houve aumento (p < 0,05) nos valores da PVC (1,9  0,4 vs 5,8  0,6cmH2O) da FC (365,0  7,0 vs 417,0  7,0bpm) e do DC (119,9  9,6 vs 172  5,3ml/min) quando comparados aos ratos FO. Em relaÃÃo ao FO ocorreu uma retenÃÃo gÃstrica nos ratos (F) nos tempos pÃs-prandial 10, 20 e 30min (45,6 Â3,6 vs 57,5  2,1%; 36,4  2,7 vs 50,5  3,3 % e 33,3  2,7 vs 44,7  3,0 %, respectivamente). Os ratos do grupo (FS), apresentaram valores de (EG) inferiores aos animais (F) (36,5  3,2 vs 50,5  3,3%, p<0,05), mas similares aos FO (36,4  2,7%). Em relaÃÃo à vagotomia (FV), a mesma reverteu o retarde no (EG) induzido pela FÃstula (F) (40,4  2,3 vs 50,5  3,3%), em contrapartida, os ratos submetidos a esplancnotomia (FE) nÃo apresentaram diferenÃas com os (F) (50,5  3,3 e 50,1  1,4%). AlÃm do mais, nÃo foi encontrada participaÃÃo da secreÃÃo Ãcida no retarde do (EG) apÃs fÃstula. Portanto, a sobrecarga cardÃaca advinda de fÃstula arteriovenosa com agulhas de calibre (21, 23 ou 26G) alÃm de promover alteraÃÃes nos parÃmetros hemodinÃmicos, induz retarde no (EG) e interfere no trÃnsito intestinal de lÃquidos em ratos acordados. Tal retarde no (EG) inclusive foi abolido apÃs sangria ou vagotomia subdiafragmÃtica prÃvias, mas nÃo havendo alteraÃÃo apÃs esplancnotomia.
In view that the behaviour of gastrointestinal tract seems to have intimate relationship with the activity of the cardiovascular system, we decided to verify whether the redistribution of blood volume through fistula aorto-caval with sizes of needles (21, 23 or 26G) affect the motility of the gastrointestinal tract in rats awaked. Male albino rats (230 to 280g) were divided into groups false-operated (FO) or designated with fistula (F), moreover, had groups fistula + bleeding (FS), fistula + vagotomy (FV) and fistula + esplancnotomy (FE), all with studied 24 hours after preparation of the fistula with needle (21G). Hemodynamic parameters of mean arterial pressure (MAP), heart rate (HR), central venous pressure (CVP) were monitored continuously and cardiac output (CO) determined by term-dilution. After the surgical procedures the rats FO and (F) had the hemodynamic parameters and gastric emptying (GE) studied in the time post-prandial (10, 20 or 30min.). The MAP of rats (F) had lower values (p <0.05) when compared to FO (116.3 Â 3.5 vs. 101.3 Â 3.3 mmHg). Moreover, in rats (F) increased (p <0.05) the values of CVP when compared to rats FO (1.9 Â 0.4 vs 5.8 Â 0.6 cmH2O), HR (365.0 Â 7.0 vs 417.0 Â 7.0 bpm) and the CO (119.9 Â 9.6 vs 172 Â 5.3 ml / min). In relation the rats the FO was a gastric retention increased in (F) in the time post-prandial 10, 20 and 30min (45.6 Â 3.6 vs 57.5 Â 2.1%; 36.4 Â 2.7 vs 50.5 Â 3.3% and 33.3 Â 2.7 vs 44.7 Â 3.0%, respectively). The rats of the group (FS), showed values of (GE) lower than the animals (F) (36.5 Â 3.2 vs 50.5 Â 3.3%, p <0.05) but similar to FO ( 36.4 Â 2.7%). The vagotomy (FV), it reversed the delay in the (GE) induced by fistula (F) (40.4 Â 2.3 vs 50.5 Â 3.3%), in contrast, the rats undergoing esplancnotomy (FE) showed no differences in comparation with the (F) (50.5 Â 3.3 and 50.1 Â 1.4%). Moreover, was not found involvement of acid secretion in the delays of the (GE) after fistula. Therefore, the overload heart arisen from arteriovenous fistula with needles, size (21, 23 or 26G) to promote changes in hemodynamic parameters, leads decreases the (GE) and interfere in the intestinal transit of liquids in rats awaked. This delay in the (GE) was also abolished after bleeding or prior the subdiaphragmatic vagotomy, but no change after esplancnotomy.
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Silva, Moisés Tolentino Bento da. "A sobrecarga aguda cardíaca advinda de fístula aorto-caval retarda o esvaziamento gástrico de líquidos em ratos acordados." reponame:Repositório Institucional da UFC, 2008. http://www.repositorio.ufc.br/handle/riufc/2583.
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SILVA, Moisés Tolentino Bento da. A Sobrecarga aguda cardíaca advinda de fístula aorto-caval retarda o esvaziamento gástrico de líquidos em ratos acordados. 2008. 107 f. Dissertação (Mestrado em Farmacologia) - Universidade Federal do Ceará. Faculdade de Medicina, Fortaleza, 2008.Submitted by denise santos (denise.santos@ufc.br) on 2012-05-07T14:00:36Z No. of bitstreams: 1 2008_dis_mtbsilva.pdf: 3158835 bytes, checksum: 859339b0ea1aaf7d950ce9d54bc40ae4 (MD5)
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In view that the behaviour of gastrointestinal tract seems to have intimate relationship with the activity of the cardiovascular system, we decided to verify whether the redistribution of blood volume through fistula aorto-caval with sizes of needles (21, 23 or 26G) affect the motility of the gastrointestinal tract in rats awaked. Male albino rats (230 to 280g) were divided into groups false-operated (FO) or designated with fistula (F), moreover, had groups fistula + bleeding (FS), fistula + vagotomy (FV) and fistula + esplancnotomy (FE), all with studied 24 hours after preparation of the fistula with needle (21G). Hemodynamic parameters of mean arterial pressure (MAP), heart rate (HR), central venous pressure (CVP) were monitored continuously and cardiac output (CO) determined by term-dilution. After the surgical procedures the rats FO and (F) had the hemodynamic parameters and gastric emptying (GE) studied in the time post-prandial (10, 20 or 30min.). The MAP of rats (F) had lower values (p <0.05) when compared to FO (116.3 ± 3.5 vs. 101.3 ± 3.3 mmHg). Moreover, in rats (F) increased (p <0.05) the values of CVP when compared to rats FO (1.9 ± 0.4 vs 5.8 ± 0.6 cmH2O), HR (365.0 ± 7.0 vs 417.0 ± 7.0 bpm) and the CO (119.9 ± 9.6 vs 172 ± 5.3 ml / min). In relation the rats the FO was a gastric retention increased in (F) in the time post-prandial 10, 20 and 30min (45.6 ± 3.6 vs 57.5 ± 2.1%; 36.4 ± 2.7 vs 50.5 ± 3.3% and 33.3 ± 2.7 vs 44.7 ± 3.0%, respectively). The rats of the group (FS), showed values of (GE) lower than the animals (F) (36.5 ± 3.2 vs 50.5 ± 3.3%, p <0.05) but similar to FO ( 36.4 ± 2.7%). The vagotomy (FV), it reversed the delay in the (GE) induced by fistula (F) (40.4 ± 2.3 vs 50.5 ± 3.3%), in contrast, the rats undergoing esplancnotomy (FE) showed no differences in comparation with the (F) (50.5 ± 3.3 and 50.1 ± 1.4%). Moreover, was not found involvement of acid secretion in the delays of the (GE) after fistula. Therefore, the overload heart arisen from arteriovenous fistula with needles, size (21, 23 or 26G) to promote changes in hemodynamic parameters, leads decreases the (GE) and interfere in the intestinal transit of liquids in rats awaked. This delay in the (GE) was also abolished after bleeding or prior the subdiaphragmatic vagotomy, but no change after esplancnotomy.
Tendo em vista que o comportamento motor do trato gastrointestinal parece ter intima relação com a atividade do sistema cardiovascular, decidimos verificar se a redistribuição do volume sanguíneo através de fistula aorto-caval com agulhas de calibres (21, 23 ou 26G) afeta a motilidade do trato gastrintestinal em ratos acordados. Ratos machos albinos (230 a 280g) foram divididos em grupos falso-operado (FO) ou com fístula designados (F), além disso, tiveram grupos fístula+sangria (FS), fístula+vagotomia (FV) bem como fístula+esplancnotomia (FE), todos estudados com 24 horas após a confecção da fistula com agulha (21G). Os parâmetros hemodinâmicos de pressão arterial média (PAM), freqüência cardíaca (FC), e pressão venosa central (PVC) foram monitorados continuamente e o débito cardíaco (DC) determinado por termo-diluição. Após os procedimentos cirúrgicos os ratos FO e os (F) tiveram os parâmetros hemodinâmicos e o esvaziamento gástrico (EG) estudados nos tempos pós-prandial (10, 20 ou 30min.). A PA dos ratos (F) tiveram valores inferiores (p < 0,05) quando comparados aos FO (116,3 ± 3,5 vs 101,3 ± 3,3mmHg). Por outro lado, nos ratos (F) houve aumento (p < 0,05) nos valores da PVC (1,9 ± 0,4 vs 5,8 ± 0,6cmH2O) da FC (365,0 ± 7,0 vs 417,0 ± 7,0bpm) e do DC (119,9 ± 9,6 vs 172 ± 5,3ml/min) quando comparados aos ratos FO. Em relação ao FO ocorreu uma retenção gástrica nos ratos (F) nos tempos pós-prandial 10, 20 e 30min (45,6 ±3,6 vs 57,5 ± 2,1%; 36,4 ± 2,7 vs 50,5 ± 3,3 % e 33,3 ± 2,7 vs 44,7 ± 3,0 %, respectivamente). Os ratos do grupo (FS), apresentaram valores de (EG) inferiores aos animais (F) (36,5 ± 3,2 vs 50,5 ± 3,3%, p<0,05), mas similares aos FO (36,4 ± 2,7%). Em relação à vagotomia (FV), a mesma reverteu o retarde no (EG) induzido pela Fístula (F) (40,4 ± 2,3 vs 50,5 ± 3,3%), em contrapartida, os ratos submetidos a esplancnotomia (FE) não apresentaram diferenças com os (F) (50,5 ± 3,3 e 50,1 ± 1,4%). Além do mais, não foi encontrada participação da secreção ácida no retarde do (EG) após fístula. Portanto, a sobrecarga cardíaca advinda de fístula arteriovenosa com agulhas de calibre (21, 23 ou 26G) além de promover alterações nos parâmetros hemodinâmicos, induz retarde no (EG) e interfere no trânsito intestinal de líquidos em ratos acordados. Tal retarde no (EG) inclusive foi abolido após sangria ou vagotomia subdiafragmática prévias, mas não havendo alteração após esplancnotomia.
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Hau, Hans Michael, Peter Fellmer, Markus B. Schoenberg, Moritz Schmelzle, Mehmet Haluk Morgul, Felix Krenzien, Georg Wiltberger, Albrecht Hoffmeister, and Sven Jonas. "The collateral caval shunt as an alternative to classical shunt procedures in patients with recurrent duodenal varices and extrahepatic portal vein thrombosis." Universitätsbibliothek Leipzig, 2014. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-151556.
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Upper gastrointestinal bleeding episodes from variceal structures are severe complications in patients with portal hypertension. Endoscopic sclerotherapy and variceal ligation are the treatment options preferred for upper variceal bleeding owing to extrahepatic portal hypertension due to portal vein thrombosis (PVT). Recurrent duodenal variceal bleeding in non-cirrhotic patients with diffuse porto-splenic vein thrombosis and subsequent portal. cavernous transformation represent a clinical challenge if classic shunt surgery is not possible or suitable.
In this study, we represent a case of recurrent bleeding of duodenal varices in a non-cirrhotic patient with cavernous transformation of the portal vein that was successfully treated with a collateral caval shunt operation.
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Sharwood-Smith, Geoffrey H. "The inferior vena caval compression theory of hypotension in obstetric spinal anaesthesia : studies in normal and preeclamptic pregnancy : a literature review and revision of fundamental concepts." Thesis, University of St Andrews, 2011. http://hdl.handle.net/10023/1815.
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Three clinical investigations together with a combined editorial and review of the cardiovascular physiology of spinal anaesthesia in normal and preeclamptic pregnancy form the basis of a thesis to be submitted for the degree of Doctor of Medicine at the University of St Andrews. First, the longstanding consensus that spinal anaesthesia could cause severe hypotension in severe preeclampsia was examined using three approaches. The doses of ephedrine required to maintain systolic blood pressure above predetermined limits were first compared in spinal versus epidural anaesthesia. The doses of ephedrine required were then similarly studied during spinal anaesthesia in preeclamptic versus normal control subjects. The principal outcome of these studies, that preeclamptic patients were resistant to hypotension after a spinal anaesthetic, was then further investigated by studying pulse transit time (PTT) changes in normal versus preeclamptic pregnancy. PTT was explored both as beat-to-beat monitor of cardiovascular function and also as an indicator of changes in arterial stiffness. The cardiovascular physiology of obstetric spinal anaesthesia was then reviewed in the light of the three clinical investigations, developments in reproductive vascular biology and the regulation of venous capacitance. It is argued that the theory of a role for vena caval compression as the single cause of spinal anaesthetic induced hypotension in obstetrics should be revised.
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Campbell, Andrew John. "The politics of canal construction : the Ashby Canal, 1781-1804." Thesis, University of Leicester, 2012. http://hdl.handle.net/2381/27794.
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Between 1781-1804 the residents of a number of parishes in Derbyshire, Leicestershire and Warwickshire found themselves on the receiving end of the promotion and construction of the Ashby Canal. As with most new developments, especially those that have an impact on the landscape, the local inhabitants had to decide whether they supported or opposed it, while outsiders had to consider what gains could be made from any involvement in the project. In this instance those in favour of the waterway won the day and the building process began in 1794. However, this was by no means an end to the negotiations as the canal company had to deal with continual internal disagreements and disputes with landowners over various issues such as damage, route changes and late payments for their land. Using sources which include contemporary newspapers, canal company records, a Parliamentary Act, and the diary of a local constable this thesis provides a micro-study of the complex politics of canal construction. It examines the considerations affecting participation in the process, the numbers of people who were involved, the workings and internal structures of the canal company and the exchanges of opinions within the organisation and between its supporters and opponents. Its findings reveal that the Ashby Canal had a significant and variable effect not only on the residents of the parishes the canal cut through, but also on people who were considered outsiders, such as non-local investors, Members of Parliament and the engineers, contractors and labourers who relocated to gain employment.
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Maurin, Bruno. "Pharmacologie du canal CFTR : développement de molécules activatrices du canal." Thesis, Grenoble, 2012. http://www.theses.fr/2012GRENV085.
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PHARMACOLOGIE DU CANAL CFTR : SYNTHESE DE NOUVEAUX COMPOSES ACTIVATEURS DE L'EFFLUX DES IONS CHLORURE.Après la découverte dans notre laboratoire d'une nouvelle réaction entre le méthylglyoxal et les α-aminoazahétérocycles aromatiques, une nouvelle famille de modulateurs de l'activité de la protéine CFTR (« Cystic Fibrosis Transmembrane conductance Regulator ») a été mise en évidence en collaboration avec l'équipe de F. Becq à Poitiers. Les dysfonctionnements de cette protéine transmembranaire résultent de différentes mutations du gène correspondant et sont responsables de plusieurs pathologies dont la mucoviscidose. Les perspectives thérapeutiques de cette maladie grave impliquent l'utilisation et la recherche d'activateurs du canal CFTR.En nous basant sur la structure des composés ayant présenté les meilleurs effets activateurs de la protéine, nous avons conçu et synthétisé une série d'analogues du composé activateur le meilleur mis en évidence précédemment, GPact-11a. Les nouveaux composés préparés sont issus des réactions du méthylglyoxal ou de nouvelles voies de synthèse utilisant des acides aminés. La réactivité de GPact-11a a ensuite été étudiée et exploitée pour préparer des prodrogues potentielles et réaliser la séparation des quatre énantiomères formés lors de la préparation de GPact-11a. Un travail de modélisation des interactions des modulateurs synthétisés avec un modèle de la protéine CFTR construit par homologie de séquences par I. Callebaut, J.-P. Mornon et P. Lehn a également été développé afin de concevoir rationnellement de nouveaux activateurs et de comprendre les effets observésPHARMACOLOGY OF CFTR CHANNEL: SYNTHESIS OF NEW ACTIVATORS OF CHLORIDE ION EFFLUX.After the discovery in our laboratory of a new reaction of methylglyoxal with α-aromatic aminoazaheterocycles, a novel family of CFTR modulators (“Cystic Fibrosis Transmembrane conductance Regulator”) has been identified in collaboration with the group of F. Becq in Poitiers. The dysfunctions of this transmembranar protein that result from different genetic mutations lead to several pathologies and among them to the genetic disease Cystic Fibrosis. In the search for more efficient CFTR activators from the structure of the best activator GPact-11a identified previously, a series of GPact-11a analogues was designed and synthesised through reaction of adenine derivatives with methylglyoxal or amino acids. The GPact-11a reactivity was also studied and used for the preparation of potential prodrugs and for the separation of the four enantiomers formed in the reaction leading to GPact-11a. Works were also developed to model the interactions between the synthesised derivatives and a CFTR model built through sequence by I. Callebaut, J.-P. Mornon and P. Lehn in order to design more rationally new activators and understand the biological effects
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Madarati, Ahmad A. "Analysis and management of intra-canal fracture of root canal instruments." Thesis, University of Manchester, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.509729.
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Martin, Morgan. "Observation du canal canal B⁰s → ηc φ avec le détecteur LHCb." Thesis, Aix-Marseille, 2017. http://www.theses.fr/2017AIXM0244.
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L'interférence entre la désintégration du méson B⁰s vers un état final propre de CP, directement ou via le mélange B⁰s- ̄B⁰s, donne lieu à une phase violant CP mesurable φ_{s}, dont la valeur dans le Modèle Standard est φs^{MS}=(-0.0370 ± 0.0006)rad. Cependant, des contributions de Nouvelle Physique peuvent intervenir dans ce processus et modifier la valeur de φs. À l'heure actuelle, la mesure la plus précise de φs est donnée par l'expérience LHCb et la valeur moyenne mondiale est φs^{exp}=(-0.021 ± 0.032)rad, dominée par l'incertitude statistique. Dans ce contexte, l'étude de la désintégration B⁰s→ηcφ est effectuée en utilisant les données de collisions pp correspondant à une luminosité intégrée de ~3.0fb⁻¹, collectées avec le détecteur LHCb avec le Run~1 du LHC. La première observation de la désintégration B⁰s→ηcφ est obtenue, avec le méson ηc reconstruit dans les quatres modes de désintégration p ̄p, K⁺K⁻π⁺π⁻, π⁺π⁻π⁺π⁻ et K⁺K⁻K⁺K⁻ et φ(1020) reconstruit dans le mode K⁺K⁻. La désintégration B⁰s→J/ψφ est utilisée comme canal de normalisation.Le rapport de branchement mesuré est B(B⁰s→ηcφ)=(5.01 ± 0.53 ± 0.27 ± 0.63) x 10⁻⁴, où la première incertitude est statistique, la seconde est systématique et la troisième incertitude est due à la connaissance limitée des rapports d'embranchement externesThe interference between B⁰s meson decay amplitudes to CP final state directly or via mixing gives rise to a measurable CP-violating phase φs, which is predicted to be φs^{MS}=(-0.0370 ± 0.0006)rad in the Standard Model. However, such process may receive contributions from New Physics and change the value of φs. At present, the most precise measurement of φs is given by the LHCb experiment and the world average is φs^{exp}=(-0.021 ± 0.032)rad, with uncertainty still dominated by the statistics.In this context, a study of B⁰s→ηcφ decays is performed using pp collision data corresponding to an integrated luminosity of ~3.0fb⁻¹, collected with the LHCb detector during the Run~1 of the LHC. The observation of the decay B⁰s→ηcφ is reported, where the ηc meson is reconstructed in the p ̄p, K⁺K⁻π⁺π⁻, π⁺π⁻π⁺π⁻ and K⁺K⁻K⁺K⁻ decay modes and the φ(1020) in the K⁺K⁻ decay mode. The decay B⁰s→J/ψφ is used as a normalisation channel.The measured branching fraction is B(B⁰s→ηcφ)=(5.01 ± 0.53 ± 0.27 ± 0.63) x 10⁻⁴, where the first uncertainty is statistical, the second systematic and the third uncertainty is due to the limited knowledge of the external branching fractions
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Jackoby, Joanna C. "Panama: owning the canal." Thesis, Monterey, California: Naval Postgraduate School, 2014. http://hdl.handle.net/10945/41395.
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Approved for public release; distribution is unlimited.It is rare that Americans wonder about what happened to the Panama Canal after the United States turned it over to Panama in 1999. Since 2000, the Panamanians have been able to transform the canal into a profitable enterprise and successfully revert a good deal of Canal Zone infrastructure to public use through a combination of positive political decision-making, fiscally beneficial economic policies, and constructive management. The United States created the nation of Panama, built and managed the canal, and finally begrudgingly handed over sovereignty. To this extent, Panama's success is our success. Yet there has been surprising little real analysis of the changes in Panama that have resulted from a decade of ownership of the canal and the land surrounding it. It is time to appraise the results so far.
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Gomes, Miguel Ferreira Pereira. "Canal SCADA na Web." Dissertação, Universidade do Porto. Reitoria, 2002. http://hdl.handle.net/10216/10358.
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Carmigniani, Rémi. "Canal redresseur de vagues." Thesis, Paris Est, 2017. http://www.theses.fr/2017PESC1049/document.
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Comment générer des courants à partir des vagues ? En s'inspirant de la nature et particulièrement des pompes à impédance, deux systèmes permettant de pomper avec des vagues sont étudiés : la pompe à résonance et les vagues au dessus d'une plaque submergée. Dans cette étude, l'origine de l'écoulement est reliée au terme de transport de masse des vagues dans la couche de surface. Il correspond à la quantité de masse déplacée par les vagues entre la crête et le creux au cours d'une période. Ce terme peut-être amplifié par des changements de bathymétrie et par résonance. Cela permet de créer des zones d'aspiration et donc de générer un courant. Le problème est modélisé par une simple description linéaire potentielle. Un modèle avec dissipation est aussi présenté afin de prendre en compte les effets de dissipation dus au déferlement et au frottement visqueux. Le modèle est comparé à des expériences et des simulations. Il permet de prédire les fréquences intéressantes et la dynamique globale. Ceci permet de comprendre l'origine d'un phénomène de pompage par vague, mais aussi de dimensionner le système à partir d'une théorie simpleHow to generate currents from water waves? Inspired by nature original way of pumping in the embryonic heart, two wave pumps are studied in the present thesis: the resonance wave pump directly inspired by the Liebau's pump and the waves above a submerged plate pump. The origin of the observed circulation is linked to the wave mass transport term: it corresponds to the amount of mass advected by the waves in the surface layer. The latter is the domain between the crest and the trough of the waves and is a part of the flow that is not always submerged. It is possible to amplify this surface term by resonance and by varying the bathymetry. The latter enables to generate local suction toward the surface layer and leads to mean circulation. The problem is described using a simple potential theory and a dissipative model is proposed to take into account wave dissipation due to friction and wave breaking. The simplified model is compared to experiments and simulations in both cases. It provides a simple framework to predict the pumps behavior: the interesting frequency range and the strength of the flow. It is also a tool for the design of real life applications
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Sohraby, Sarah. "Le canal sodium épithélial." Doctoral thesis, Universite Libre de Bruxelles, 1988. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/213399.
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Gomes, Miguel Ferreira Pereira. "Canal SCADA na Web." Master's thesis, Universidade do Porto. Reitoria, 2002. http://hdl.handle.net/10216/10358.
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Souhard, Benoît. "Codage conjoint source canal : application à la transmission d'images fixes sur canal ionospérique." Poitiers, 2004. http://www.theses.fr/2004POIT2253.
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Izaguirre-Sierra, Mario. "Cajal body mutants in Arabidopsis thaliana : a Poly Cajal Body, a ULP1 cysteine protease required for the maintenance of Cajal body integrity." Thesis, University of East Anglia, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.446499.
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Luiz, Tiago Marques. ""Cava a cova!"." reponame:Repositório Institucional da UFSC, 2013. https://repositorio.ufsc.br/xmlui/handle/123456789/122684.
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Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Comunicação e Expressão, Programa de Pós-Graduação em Estudos da Tradução, Florianópolis, 2013.Made available in DSpace on 2014-08-06T17:14:19Z (GMT). No. of bitstreams: 1 324578.pdf: 811054 bytes, checksum: 17591b976abc2bed904749d66890d0ec (MD5) Previous issue date: 2013
Em estudos acadêmicos, como os Estudos da Tradução, por exemplo, a pesquisa é feita para preencher uma lacuna, entretanto os pesquisadores apresentam dificuldades em como conduzir o projeto de pesquisa, qual a metodologia a ser usada para sustentar a pesquisa. A famosa máxima ?Um problema bem colocado é resolvido pela metade?, no ver da pesquisa científica, não deixa de ser verdade; mas faz-se necessária uma formulação do problema, de modo que irá clarear o objetivo do projeto de pesquisa. (KRUGER; WALLMARCH, 1997, p. 120). Esta dissertação tem como objetivo fazer uma análise descritivo-comparativa do humor shakespeariano em duas traduções brasileiras da cena dos coveiros da peça A Tragédia de Hamlet: Príncipe da Dinamarca, de William Shakespeare (2005). Entende-se por humor os recursos textuais e discursivos passíveis de gerar o riso presentes no original e como estes elementos foram transpostos nas traduções da referida cena na peça shakespeariana por Millôr Fernandes e Carlos Alberto Nunes, esta publicada em 1983 e aquela em 1955, porém será a usada a reimpressão de 2011 de ambas. Inicialmente, pretende-se introduzir a questão da tradução do humor em Shakespeare, com base em estudos de Dirk Delabastita (1996) e Stanislaw Baranckzak (1992), e depois analisar a cena dos coveiros pelo modelo descritivo proposto por José Lambert & Hendrik Van Gorp (2011). Junto com o modelo descritivo, unimos a Teoria Geral do Humor Verbal de Salvatore Attardo (2002) e os procedimentos técnicos de Jean Paul Vainay & Jean Darbelnet (in VENUTI, 2004), como teorias voltadas ao processo tradutório com seus mecanismos de funcionamento. Como resultado final, pôde-se notar que ambos os tradutores souberam transpor a comicidade no texto shakespeariano, mantendo o tom ambíguo, irônico e sarcástico que o humor sugere.
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Poet, Mallorie. "Exploration du pore ionique d'un canal de la famille Enac / Degenerines, le canal Fanac." Nice, 2002. http://www.theses.fr/2002NICE5709.
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Bedjaoui, Nadia. "Supervision dynamique d'un canal d'irrigation." Phd thesis, Grenoble INPG, 2006. http://tel.archives-ouvertes.fr/tel-00140232.
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L'intérêt principal des canaux d'irrigation est d'assurer une bonne distribution de l'eau aux usagers tout en préservant la ressource en eau. L'automatisation des ouvrages de régulation des canaux a largement contribué à l'amélioration de la gestion de l'eau. La commande automatique d'un canal consiste à agir sur l'ouverture et la fermeture des vannes suivant les données issues des différents instruments de mesures placés sur le canal. Le bon déroulement du processus de commande exige que ces mesures soient fiables. En pratique, ces mesures sont souvent entachées de bruits ou encore d'erreurs. Ces erreurs sont généralement l'effet de défauts dans les capteurs ou actionneurs. Il est par conséquent impératif de munir le canal d'un système de supervision permettant de détecter et de localiser ces défauts.Nous développons dès lors une méthodologie de détection et de localisation des défauts dans les canaux d'irrigation. Cette méthodologie s'appuie sur les techniques de réconciliation de données et de diagnostic à base d'observateurs. La première partie est consacrée à l'application de la réconciliation de données sur un site réel du Canal de Gignac. Les canaux d'irrigation étant des systèmes à retards, la deuxième partie de ce travail porte sur l'extension des méthodes de diagnostic à base d'observateurs pour systèmes à retards.
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Negocios, Universidad Peruana de Ciencias Aplicadas Facultad de. "Merchandising en el canal tradicional." Universidad Peruana de Ciencias Aplicadas - UPC, 2008. http://hdl.handle.net/10757/272535.
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Freer, Wendy. "Canal boat people, 1840-1970." Thesis, University of Nottingham, 1991. http://eprints.nottingham.ac.uk/10946/.
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This thesis seeks to examine the social and economic standing of the men, women and children who lived and worked on the canal boats of England and Wales during the decline of canal carrying between 1840 and 1970. Its main purpose is to analyse how and why this social group, with its peculiarly anachronistic way of life and work, survived until well into the second half of the twentieth century. It discusses the range of survival strategies open to the group ranging from family, through community, voluntary agencies and the state as providers of welfare, together with the relationship between these agencies. This has involved an investigation of kinship patterns among land-based and boat-based boat families and the relationship between boat people and the rest of society. Of particular concern has been the way in which the boat community emerged as a distinctive and cohesive social group based on occupation rather than class. It has not generally been appreciated that the decline of this industry was very long and, up until the First World War, quite gradual. Thus, opportunities for enterprise and remunerative employment continued for long after the appearance of the steam locomotive. At most times throughout the history of canal carrying, boatmen were able to earn money wages on a par with, or even in excess of those paid to manual workers in other old staple industries. This thesis also shows that the decision to live on board was a matter of regional custom and personal choice and not merely a result of straitened economic circumstances. Furthermore, it appears that the majority of those men who did take their families on board retained a house on land. Nevertheless, those who chose to live on board with their families did so at considerable social cost and thus it emerges that social deprivation and some forms of poverty are not merely a reflection of low pay.
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Robinson, Jonathan Peter. "Imaging of root canal preparation." Thesis, University of Birmingham, 2014. http://etheses.bham.ac.uk//id/eprint/5293/.
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MicroCT was developed as a tool for assessing the quality of root canal preparation procedures in endodontics. Now debris can be measured in all areas of the canal with an automated calculation of the canal’s isthmus width. Investigations highlighted the biological variation present in the mandibular molar, with debris accumulating in isthmi, lateral canals and protrusions. Canals having an average isthmus width of 120-270μm resulted in 3.5x increase of debris compared to 271-630μm. Enlarging canals with a series of rotary files was shown to statistically significantly decrease debridement compared to a single reciprocating file. Regardless of irrigant or file motion, debris always remained in the canals which may become a source of reinfection, leading to treatment failure. Ultrasonic cleaning was investigated as a potential agent of a more thorough cleaning. A novel hydrogel with similar viscoelastic properties to some biofilms was created, and removal of this from canals was characterised by an initial rapid and unstable removal, followed by slower, constant viscous removal (isthmus) or the detaching of fragments of hydrogel (lateral canal). Ultrasonic cavitation effects were subsequently demonstrated to play a major role in removing biofilm in this model, although the creation of stable bubbles inhibited hydrogel removal.
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Canetti, Patricia Kunst. "Canal contemporâneo: memórias e perspectivas." Pontifícia Universidade Católica de São Paulo, 2015. https://tede2.pucsp.br/handle/handle/18178.
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Previous issue date: 2015-04-07This work is a survey of Canal Contemporâneo's fourteen years of memory - www.canalcontemporaneo.art.br - and analyzes this memory and its adjacent concepts to point out the prospects of this experiment / research , which reached a surprising longevity in Brazilian cultural Internet. The rescue of its history and collective memory was done in three chapters which thread runs through the editorial sections, platforms and actions of Canal Contemporâneo. In the first chapter we discuss its origin, the first stimuli, concepts and developments. Since then gathered actions that operate in the field of art, politics and communication, pointing to a perspective of narrative and rereading of contemporary art, with a work on Social Netwok Analysis and Data Visualization. The theoretical basis of this research that only begins is based on the following fields and authors: Data Visualization (Fernanda Viégas, Lev Manovich e Manuel Lima); Taxonomy (Marcia Lei Zeng e Jian Qin); Social Netwok Analysis (Katherine Faust e Stanley Wasserman) and models of Random Graphs (Paul Erdős e Alfréd Rényi), Small-World (Duncan J. Watts e Steven Strogatz), Preferential Attachment (Albert-László Barabási e Réka Albert); History and Sociology of Art (Aby Warburg, Alfred Gell e Bruno Latour). We hope that the new shared experience through this work can contribute to a broader view of collection, archiving and cultural heritage, for public policy of culture in Brazil
Este trabalho faz um levantamento da memória de quatorze anos de existência do Canal Contemporâneo www.canalcontemporaneo.art.br e analisa esta memória e seus conceitos adjacentes para apontar as perspectivas deste experimento/pesquisa, que atingiu uma longevidade surpreendente na Internet cultural brasileira. O resgate de sua história e memória coletiva foi feito em três capítulos cujo fio condutor perpassa as seções editoriais, as plataformas e as ações do Canal Contemporâneo. No primeiro capítulo abordamos a sua origem, os primeiros estímulos, conceitos e desdobramentos. Desde então reuniu ações que operam no campo da arte, da política e da comunicação, que apontam para uma perspectiva de narrativa e releitura da arte contemporânea, com um trabalho de Análise de Redes Sociais e Visualização de Dados. O embasamento teórico desta pesquisa que apenas se inicia se firma nos seguintes campos e autores: Visualizações de Dados (Fernanda Viégas, Lev Manovich e Manuel Lima); Taxonomia (Marcia Lei Zeng e Jian Qin); Análise de Redes Sociais (Katherine Faust e Stanley Wasserman) e dos modelos de Grafos Aleatórios (Paul Erdős e Alfréd Rényi), Small-World (Duncan J. Watts e Steven Strogatz), Preferential Attachment (Albert-László Barabási e Réka Albert); História e Sociologia da Arte (Aby Warburg, Alfred Gell e Bruno Latour). Esperamos que a nova experiência compartilhada através deste trabalho possa contribuir para uma visão mais ampla de acervo, arquivo e patrimônio cultural, para as políticas públicas de cultura no Brasil
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Panont, Fernando Sales. "Canal virtual de tempo-real." Universidade Federal de São Carlos, 2006. https://repositorio.ufscar.br/handle/ufscar/385.
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Previous issue date: 2006-03-31Due to the increase of general purpose operational systems support for real-time applications and by the increasing number of network interfaces with multiple communication technologies present in one single computational device, a middleware, with real-time characteristics, was designed and developed. This middleware encapsulates these communication technologies and protocols in order to improve fault tolerance and consequentially comply with deadlines for message transmission through connectivity options supply. Moreover, the Real Time Virtual Channel provides a virtual access point address mechanism, where each address maps a set of real access points from the consumer endpoint. For the translation of these addresses in real access points, name servers, known as Brokers, were also implemented.
Devido ao crescimento de suporte nos sistemas operacionais de propósito geral às aplicações de tempo-real e ao aumento do número de interfaces de rede com múltiplas tecnologias de comunicação em um mesmo dispositivo computacional, um middleware com características de tempo-real foi projetado e desenvolvido. Este middleware encapsula estas tecnologias e protocolos de comunicação de modo a aumentar a tolerância a falhas e, consequentemente, melhorar o cumprimento dos prazos de entrega de mensagens através do fornecimento de alternativas de conectividade. Além disso, Canal Virtual de Tempo-Real provê um mecanismo de endereçamento virtual de pontos de acesso, onde cada endereço faz o mapeamento de um conjunto de pontos de acesso reais da ponta consumidora. Para a tradução destes endereços em pontos de acesso reais, servidores de nomes, conhecidos como Brokers, também foram utilizados.
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Gutiérrez, Hernández Julián Eli. "Drought Indices in Panama Canal." Master's thesis, Česká zemědělská univerzita v Praze, 2015. http://www.nusl.cz/ntk/nusl-258961.
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Panama has a warm, wet, tropical climate. Unlike countries that are farther from the equator, Panama does not experience seasons marked by changes in temperature. Instead, Panama's seasons are divided into Wet and Dry. The Dry Season generally begins around mid-December, but this may vary by as much 3 to 4 weeks. Around this time, strong northeasterly winds known as "trade winds" begin to blow and little or no rain may fall for many weeks in a row. Daytime air temperatures increase slightly to around 30-31 Celsius (86-88 Fahrenheit), but nighttime temperatures remain around 22-23 Celsius (72-73 Fahrenheit). Relative humidity drops throughout the season, reaching average values as low as 70 percent. The Wet Season usually begins around May 1, but again this may vary by 1 or 2 weeks. May is often one of the wettest months, especially in the Panama Canal area, so the transition from the very dry conditions at the end of the Dry Season to the beginning of Wet Season can be very dramatic. With the arrival of the rain, temperatures cool down a little during the day and the trade winds disappear. Relative humidity rises quickly and may hover around 90 to 100% throughout the Wet Season. Drought forecasts can be an effective tool for mitigating some of the more adverse consequences of drought. The presented thesis compares forecast of drought indices based on seven different models of artificial neural networks model. The analyzed drought indices are SPI and SPEI-ANN Drought forecast, and was derived for the period of 1985-2014 on Panama Canal basin; I've selected seven of sixty-one Hydro-meteorological networks, existing in the Panama Canal basin. The rainfall is 1784 mm per year. The meteorological data were obtained from the PANAMA CANAL AUTHORITY, Section of Water Resources, and Panama Canal Authority, Panama. The performance of all the models was compared using ME, MAE, RMSE, NS, and PI. The results of drought indices forecast, explained by the values of seven model performance indices, show, that in Panama Canal has problem with the drought. Even though The Panama is generally seen as a wet country, droughts can cause severe problems. Significant drought conditions are observed in the index based on precipitation and potential evaporation found in this thesis; The Standardized Precipitation Index (SPI), the Standardized Precipitation Evapotranspiration Index (SPEI), were used to quantify drought in the Panama Canal basin, Panama Canal, at multiple time scales within the period 1985-2014. The results indicate that drought indices based on different variables show the same major drought events. Drought indices based on precipitation and potential evaporation are more variable in time while drought indices based on discharge. Spatial distribution of meteorological drought is uniform over Panama Canal.
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Le, Berre Véronique Françoise. "Imagerie normale du canal carpien." Université Louis Pasteur (Strasbourg) (1971-2008), 1985. http://www.theses.fr/1985STR1M100.
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García, Maura Outeiral. "Caracterização direccional do canal rádio." Master's thesis, Universidade de Aveiro, 2009. http://hdl.handle.net/10773/2155.
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Mestrado em Engenharia Electrónica e TelecomunicaçõesA rápida expansão das comunicações sem fios provocou o desenvolvimento de sistemas que tentam manter, simultaneamente, uma alta taxa de transmissão e uma elevada qualidade de serviço. É, portanto, indispensável conhecer o canal rádio, isto é, conseguir uma caracterização do canal rádio o mais precisa e profunda possível. O objectivo desta tese é o estudo e análise do canal rádio. Com esse fim, são estimados os parâmetros do canal utilizando o algoritmo SAGE (Space-Alternating Generalized Expectation Maximization) a partir do sinal recebido. Na primeira parte deste trabalho, realizou-se um estudo teórico do canal direccional: fenómenos que o afectam, definições de parâmetros, modelos de propagação e algoritmos de elevada resolução para a estimação dos seus parâmetros, entre outros. Seguidamente, foram levadas a cabo diversas campanhas de medidas em diferentes ambientes (indoor, outdoor e combinação dos dois), com a intenção de analisar o algoritmo SAGE e, assim, caracterizar o canal rádio. Com o propósito de facilitar o processamento e interpretação dos dados, implementaram-se várias ferramentas software. Foi dada atenção especial à representação gráfica da informação, tendo sido estudadas e implementadas várias formas de representação. Por último, depois de uma análise intensiva dos resultados obtidos nos diferentes cenários e ensaios, tanto sintéticos como reais, avaliouse o desempenho do algoritmo SAGE (no domínio do tempo e da frequência).
The wireless communication boom induced the development of systems which, simultaneously, try to keep a high transmission rate and a steep quality of service. Therefore, knowing the radio channel is indispensable, id est, to achieve a characterization of the radio channel in the most precise and deepest way. The objective of this project is the inquest and analysis of the radio channel. With that purpose, the channel parameters are estimated using the SAGE (Space-Alternating Generalized Expectation Maximization) algorithm from the signal taken in reception. In the first part of this work, a theoretical study of the directional channel was made: phenomena that influence it, definitions of parameters, propagation models and high resolution algorithms for the estimation of the channel parameters, and others. Later on, several measurement campaigns were made in different environments (indoor, outdoor and combination of both), in order to analyse the SAGE algorithm and, in that manner, characterize the radio channel. With the aim to make easier the processing and interpretation of the information, some software tools were implemented. Special attention has been given to graphical representation of information and several arrangements were studied and implemented. Finally, after an intensive analysis of the results in the different scenarios and trials, both synthetic and real, the performance of the SAGE algorithm was evaluated, in the time and frequency domains.
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Morgado, Tito. "Variações anatómicas do canal mandibular." Master's thesis, [s.n.], 2013. http://hdl.handle.net/10284/3925.
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Projeto de Pós-Graduação/Dissertação apresentado à Universidade Fernando Pessoa como parte dos requisitos para obtenção do grau de Mestre em Medicina DentáriaO canal mandibular é uma estrutura radiograficamente delimitada por duas margens radiopacas, localizado no osso da mandíbula desde o buraco mandibular até ao buraco mentoniano, que serve de ducto para o nervo alveolar inferior, estrutura de vital importância nos tratamentos efectuados na mandíbula e, se não for correctamente identificada, por levar ao insucesso destes mesmos tratamentos. A sua anatomia padrão pode sofrer algumas alterações consideradas normais entre indivíduos da mesma espécie, mas encontra-se documentado na literatura, variações anatómicas que devem ser observadas atentamente pelo Médico Dentista, tanto a nível da anatomia como da forma, como a presença de canais bifurcados. Estas alterações são difíceis de prever mas a lesão do IAN acarreta problemas tanto para o Médico Dentista como para o paciente. Pretende-se com este trabalho monográfico da exposição do estado da arte existente sobre o IAN, as suas variações e os meios imagiológicos utilizados para a sua observação e análise. Para tal foi realizada uma revisão sistemática da literatura de acesso livre disponível na base de dados da Faculdade de Ciências da Saúde da Universidade Fernando Pessoa. Após a utilização das seguintes palavras-chave “inferior alveolar nerve”, “mandibular canal” e o marcador boleano “and” para a combinação entre diferentes palavras-chave “mandibular canal and variations”, “third molar and mandibular canal”, “sistemic desiases and mandibular canal”, com restrições temporais entre o ano de 2000 e o de 2013, e sujeitando os artigos encontrados aos critérios de inclusão, foram obtidos 49 artigos. Os resultados demonstram algumas incongruências de concordância, nomeadamente na real sensibilidade da ortopantomografia na observação da correcta relação entre o CM e as estruturas que o rodeiam. The mandibular canal is a structure radiographically opaque bounded by two edges and located in the jaw bone, between the mandibular and mento’s hole. It serves of duct for the inferior alveolar nerve which is a structure of vital importance in treatments carried out in the mandibula and, if not is correctly identified, can lead to treatments failure. Their pattern anatomy undergoes some individual changes considered normal in the same species, but is documented in the literature that abnormal anatomic variations should be observed carefully by the Dentist at both the anatomy and form (eg. presence of bifurcated canals). These changes are difficult to predict but the IAN injury causes problems for both the dentist and the patient. The aim of this monographic work is to do and exhibition of the existing state of art of the IAN, their variations and the means used for is imaging observation and analysis. For this, we conducted a systematic literature in freely accessible database available at the Faculdade de Ciência das Saúde da Universidade Fernando Pessoa. After using the following keywords “inferior alveolar nerve”, “mandibular canal” and the Boolean marker “and” for the different combination of keywords “mandibular canal and variations”, “third molar and mandibular canal”, “systemic desiases and mandibular canal” with temporal constraints between the year 2000 and 2013, and subjecting the articles found with the inclusion criteria were obtained 49 articles. The results show some inconsistencies of agreement, particularly in the real sensitivity of panoramic radiography in the observation of the correct relationship between the CM and the structures surrounding it.
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Cunha, Christelle Faria da. "Vivências de um casal infértil." Bachelor's thesis, [s.n.], 2012. http://hdl.handle.net/10284/3481.
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Trabalho apresentado à Universidade Fernando Pessoa como parte dos requisitos para obtenção do grau de Licenciada em EnfermagemA infertilidade é reconhecida pela WHO (1991) como um problema de extrema relevância em Saúde Pública, representando um fenómeno mundial que afeta entre 50 e 80 milhões de pessoas em idade reprodutiva. Neste sentido, no âmbito do 4º ano da licenciatura de enfermagem, realizou-se este estudo que visa conhecer qual o impacto da infertilidade nas vivências de um casal infértil de Ponte de Lima, tendo por base um estudo qualitativo descritivo do tipo estudado de caso. Observou-se os seguintes resultados: o casal infértil refere sentimentos com conotação negativa, nomeadamente, do foro psicológico sendo estes, a ansiedade, tristeza/desânimo, e entre outros. No entanto, refere alívio aquando ao estabelecimento do diagnóstico, com sentimento de positivismo em relação ao tratamento médico. De facto, aquando ao contacto com os serviços de saúde o casal valoriza o papel do enfermeiro, destacando o apoio psicológico e a informação dada por parte deste profissional de saúde.
Infertility recognized by WHO (1991) as an issue of extreme relevant importance in Public Health, representing a worldwide phenomenon which affects 50 and 80 million people in reproductive age. In this sense, in the ambit of the 4th year of nursing degree, took place this study to know what is the impact of infertility on the experiences of an infertile couple from Ponte de Lima’s Town, based on a qualitative descriptive study from the type case study. We observed the following results: the infertile couple referred feelings with negative connotation, namely, those of a psychological character, like anxiety, sadness / discouragement, and others. However, the couple refers relief when the diagnosis is established, with a positivism feeling related to the medical treatment. In fact, when in contact with health services the couple appreciates the role of nurses, highlighting the psychological support and information provided by this health professional.
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Almenara, Bezancon Twiggi Nicole. "Albergue turístico cultural Caral-Supe." Bachelor's thesis, Universidad Peruana de Ciencias Aplicadas (UPC), 2015. http://hdl.handle.net/10757/600387.
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López, Taverne Felipe. "Corredor verde : canal San Carlos." Tesis, Universidad de Chile, 2013. http://www.repositorio.uchile.cl/handle/2250/116272.
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ArquitectoCreo importante decir algo sobre como sueño la ciudad, una mirada con los principios que he adquirido e internalizado en el transcurso de seis años vividos en esta universidad, que difieren con los principios que se expresan desde otras casas de estudio respecto al espacio público. No se trata necesariamente de una representación del pensamiento académico de esta Facultad, sino de una visión particular, aquilatada, pensada y expresada a través de estos años que decantan en la propuesta que se expondrá en estas páginas. Existen variados indicios de la importancia de hacerse cargo de los problemas que enfrentan las ciudades y su conformación. Uno de ellos, quizás el más importantes en el último tiempo en nuestro país, es la aprobación de la Política Nacional de Desarrollo Urbano, después de casi trece años sin existencia de tal, que en sus considerandos iniciales da cuenta de la complejidad que presentan las ciudades.
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Golstein, Philippe. "Le canal à iodure thyroïdien." Doctoral thesis, Universite Libre de Bruxelles, 1995. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/212486.
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Cardoso, Mariana Guerreiro Santos Chambel. "Relatório de estágio: canal 180." Master's thesis, Faculdade de Ciências Sociais e Humanas, Universidade Nova de Lisboa, 2012. http://hdl.handle.net/10362/7867.
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Relatório de Estágio apresentado para cumprimento dos requisitos necessários à
obtenção do grau de Mestre em Ciências da Comunicação – Área de Especialização
em Cinema e TelevisãoO presente relatório de estágio tem como objectivo apresentar uma análise do trabalho realizado entre Setembro e Novembro de 2011, no Canal 180. No decurso do estágio foram aplicados conhecimentos teóricos e práticos adquiridos durante a componente lectiva do Mestrado em Ciências da Comunicação – Especialização em Cinema e Televisão - e foram desenvolvidas capacidades novas na área de produção de televisão.
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Adgé, Michel. "La construction du canal royal de la jonction des mers en Languedoc (Canal du Midi)." Thesis, Montpellier 3, 2011. http://www.theses.fr/2011MON30110.
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Le présent travail concerne la construction du Canal depuis les origines jusqu'en 1694.Sont étudiés tout d'abord les projets de jonction des Mers depuis l'Antiquité, puis ceux qui ont vu le jour en Bourgogne et en Languedoc aux XVIe et XVIIe siècles, la suite de leurs échecs ayant formé l'atmosphère dans laquelle s'est déroulée l'aventure du Canal.Ignorant les légendes, on examine ensuite le milieu intellectuel dans lequel s'est formée l'idée du Canal de Languedoc ; l'aménagement des graus du golfe du Lion et la création du port de Sète ; le cheminement de la commission de 1664 et le devis qui en est résulté.Une deuxième partie traite du déroulement des travaux, de leur exécution et de leur financement, puis des travaux de parachèvement du Canal par Vauban et ses ingénieursThis work deals with the building of the Canal du Midi from the onset to 1694.It first studies the projects of canals joining seas in ancient history, and then those of Burgundy and Languedoc in the 16th and 17th centuries, the failure of which provides the backdrop of the Canal du Midi endeavour.Leaving legends aside, we then explore the intellectual milieu in which the idea of a canal joining the Atlantic Ocean and the Mediterranean through Languedoc was sparked; the engineering of the coastal lagoon passes along the Gulf of Lion and the building of the port of Sète. Finally, we retrace the work of the study committee in 1664 and the resulting cost estimate.The second part of this dissertation deals with the works themselves and their financing, and finally with the finishing work on the canal by Vauban and his engineers
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Benhumea, Martínez Oscar Rai. "Corredor Multimodal Interoceánico: Análisis comparativo del Canal de Panamá y el Canal Interoceánico en México." Tesis de Licenciatura, Universidad Autónoma del Estado de México, 2019. http://hdl.handle.net/20.500.11799/104592.
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Martínez, Sánchez y Casado (2002 apud Torres, 2017) señalan que durante el Porfiriato se despertó el interés por realizar un Canal Transístmico en el Istmo de Tehuantepec, por tener la mejor ubicación dentro del país y por ser la brecha más estrecha, lo cual concordaba con todos los atributos que se requerían para poder lograr una conexión entre el Océano Pacifico y el Atlántico.
Ortiz (como se cita en Torres, 2017) el éxito del Canal del Istmo de Tehuantepec fue efímero ya que para 1915 se inaugura el Canal de Panamá y la mayoría de la carga comercial atravesaría por el Istmo Panameño, este acontecimiento junto al movimiento revolucionario de 1910 dio fin al ferrocarril Transístmico.
Así como bien lo indican Cunin y Krotz (2012) la región no se desarrolla como resultado de un proyecto concebido de antemano, sino como el resultado de las interacciones entre distintos actores, en las que cada uno busca sus propios intereses.
En miras de buscar la reactivación del Istmo de Tehuantepec el Gobierno de la actual administración hará una inversión de 8,000 millones de pesos, para que la región del sur del país se pueda desarrollar, la inversión se hará en los Estados de Veracruz y Oaxaca, contemplando una modernización y ampliación de los Puertos de Salina Cruz y Coatzacoalcos (Molina, 2018).
China tiene intenciones de invertir en México, así como lo ha hecho con otros países de América Latina y el Caribe, ya que cuenta con los recursos financieros y tecnológicos que México requiere para impulsar dos de los proyectos más ambiciosos de México como lo son, el Tren Maya y el Ferrocarril Transístmico que conecta al Pacifico con el Atlántico (Forbes, 2018).
Corredor Multimodal Interoceánico: Análisis comparativo del Canal de Panamá y el Canal
Interoceánico en México
7
De acuerdo a datos de la Secretaría de Comunicaciones y Transportes (2018) Coatzacoalcos no solo es un punto de convergencia para distintas rutas nacionales, sino también lo es para las rutas internacionales, gracias a que tiene un alcance con el corredor Ciudad de México-Puebla y Progreso, y con el corredor vial-ferroviario Transístmico hacia el Puerto de Salina Cruz, ubicado en el Estado de Oaxaca.
Ortiz (1971) dice que de acuerdo al Departamento de Marina de los Estados Unidos, realizar un traslado de mercancías provenientes de Liverpool, Inglaterra a Auckland, Nueva Zelanda tiene una distancia de 14,645 millas náuticas vía el Canal de Suez, de 13,312 millas náuticas por Panamá y a través del Istmo de Tehuantepec solo 4,925 millas náuticas (Torres 2017, p. 131).
Según datos de SCT, (2008) gracias a la posición geográfica con la que cuenta México, el 80% de su comercio exterior se realiza a través de transporte marítimo, ya que los puertos que se ubican en el Océano Pacífico y en el Golfo de México pueden conectar con 535 destinos geográficos ubicados en cualquier parte del mundo, lo cual facilita las exportaciones e importaciones.
De acuerdo a datos de Theurel (2016) con 381 km de largo, se pretende la creación de un gasoducto transoceánico que atravesara 14 municipios de Veracruz, y 13 municipios de Oaxaca, esto formara parte de la infraestructura que tiene como fin, transportar el gas mezclado procedente de Estados Unidos, a su vez también se busca rehabilitar el ferrocarril y la carretera que atraviesa el Istmo, esto con el único fin de hacer más eficiente el traslado de mercancías por el Istmo.
Según los datos publicados por el Instituto Mexicano del Transporte (2018) la carga total transportada por ferrocarril en la región sur sureste del país en 2016 es equivalente a 4.97%, la cual se integra por 11,189 registros que son equivalentes a 6,072,015 toneladas.
Corredor Multimodal Interoceánico: Análisis comparativo del Canal de Panamá y el Canal
Interoceánico en México
8
En 1879 empezó la construcción del canal (Panamá) dirigido por Ferdinand de Lesseps, quien también estaba involucrado con el Canal de Suez. La idea era hacer un canal al nivel del mar, como también habían hecho con el Canal de Suez, aunque tuvieron que afrontar el problema de las montañas y las enfermedades (Autoridad del Canal de Panamá, 2018).
De acuerdo a Sacyr (2015) la ampliación del Canal de Panamá representa una de las obras de ingeniería más ambiciosas de la era moderna, la obra es liderada por la empresa española Sacyr, la cual es responsable del diseño y construcción del tercer juego de esclusas, que junto al consorcio internacional Grupo Unidos por el Canal (GUPC) tienen la enorme tarea de llevar acabo el Tercer juego de esclusas, una en el Atlántico y la otra en el Pacífico.
De acuerdo a la Autoridad del Canal de Panamá (2018) el 26 de Junio de 2016 se inauguró un tercer carril para el tránsito por el Canal de Panamá, lo cual significa una mayor competitividad, una mejora en el servicio y se asegura el valor de la ruta marítima a través de Panamá, con la ampliación del canal no solo aumento la dimensión de los carriles, sino también la capacidad de las esclusas para permitir el paso a buques de mayor capacidad.
Ahora las esclusas de Cocolí y Agua Clara son más anchas, más largas y más profundas que las esclusas de Miraflores, Pedro Miguel y Gatún. Por lo tanto, las esclusas neopanamax permiten el paso de buques que almacenan más de 14,000 TEU (Twenty-foot Equivalent Unit), en tanto que las esclusas panamax permiten el paso de buques con capacidad de 5,000 TEU (ACP, 2018).
Según datos de la ACP (2019) luego de la ampliación del Canal de Panamá se logró el tránsito número 6,000 del buque neopanamax, de los cuales el 50% pertenece al segmento de portacontenedores, el 26% al segmento de Gas Licuado de Petróleo,
Corredor Multimodal Interoceánico: Análisis comparativo del Canal de Panamá y el Canal
Interoceánico en México
9
un 11% al de Gas Licuado Natural y el porcentaje restante pertenece a los buques que transportan gráneles secos y líquidos, porta vehículos y pasajeros.
Dentro del desarrollo del contexto se busca cumplir con el Objetivo General: Analizar los beneficios comerciales que traería la reapertura del Canal del Istmo de Tehuantepec en comparación al Canal de Panamá.
Siendo así que los objetivos específicos son:
-Conocer la viabilidad comercial que traería consigo la reapertura del Canal del Istmo de Tehuantepec.
-Realizar un análisis comparativo del Canal de México y el Canal de Panamá.
Con base al desarrollo del análisis, el tipo de investigación que se eligió es de tipo exploratorio porque de acuerdo a Hernández, Fernández y Baptista (2014) “la meta de este tipo de investigación es someter a un análisis cualquier tipo de fenómeno, contexto o situación de la cual se tenga poco conocimiento y no haya suficiente información”.
Los distintos métodos de los cuales se apoya el análisis ayudaran a comprender el desarrollo que ha tenido una vía interoceánica y su evolución a lo largo del tiempo. Es por eso que se utilizan los métodos, deductivo, inductivo, analítico y sintético para poder entender la situación actual del Istmo de Tehuantepec y la viabilidad comercial que traería consigo al poner en marcha uno de los proyectos que dio estabilidad económica a México durante el Porfiriato.
Para poder comprender cada uno de los puntos citados en el análisis se utilizará un enfoque cualitativo en la investigación, con la recolección de datos se describen situaciones observables y se pueden interpretar fenómenos. La principal característica de este enfoque es darle sentido a las ideas o actos de las personas y al mismo tiempo al mundo que los rodea (Hernández, Fernández y Baptista, 2014).
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Sant'Anna, Junior Arnaldo [UNESP]. "Avaliação do preenchimento de canais laterais simulados proporcionais pela guta-percha e Resilon empregando diferentes técnicas de obturação." Universidade Estadual Paulista (UNESP), 2011. http://hdl.handle.net/11449/104181.
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O objetivo deste estudo foi avaliar a capacidade de preenchimento de canais laterais simulados pela guta-percha e Resilon, empregando diferentes técnicas termoplastificadoras de obturação: Condensação Vertical Aquecida (CVA), Compactação Termomecânica (CT) e Sistema Obtura II (SO). Foram utilizados 135 dentes humanos unirradiculados extraídos. Após preparo biomecânico, foram confeccionados seis canais laterais simulados em suas raízes, de acordo com a técnica proposta por Venturi et al. (2005). O diâmetro desses canais foi correspondente aos instrumentos # 08 e 10, sendo estabelecidos a 2, 5 e 8 mm do comprimento de trabalho (CT). Os espécimes foram divididos em 9 grupos (n=15), sendo: Grupo I (CVA + guta-percha Dentsply), Grupo II (CVA + Resilon), Grupo III (CVA + guta-percha Odous), Grupo IV (CT + guta-percha Dentsply), Grupo V (CT + Resilon), Grupo VI (CT + guta-percha Odous), Grupo VII (SO + guta-percha Obtura Flow 150), Grupo VIII (SO + Resilon) e Grupo IX (SO + guta-percha Odous Flow). Após a realização das obturações, os espécimes foram analisados pelos métodos radiográfico e diafanização, em função do percentual de preenchimento nos canais laterais, nos três terços. Os resultados foram submetidos ao teste de Kruskal-Wallis, com 5% de nível de significância, de acordo com avaliações específicas intra-grupos: CVA (Grupos I, II e III), CTH (Grupos IV, V e VI), SO (Grupos VII, VIII e IX) e Resilon (Grupos II, V e VIII). As avaliações CVA e CTH mostraram que o Resilon apresentou maior capacidade de preenchimento nas duas análises, em relação aos demais materiais, nos terços apical e médio (p<0,05). Quanto à avaliação SO, todos os materiais apresentaram boa capacidade de preenchimento dos canais laterais em todos os terços, com exceção do terço cervical onde o Resilon foi...
The aim of this study was to evaluate the ability of gutta-percha and Resilon to fill simulated canals using different thermoplastic obturation techniques: Warm Vertical Compaction (CVA), Thermomechanical Compaction (CTE) and Obtura II System (SO). It was used 135 extracted human teeth uniradicular. After biomechanical preparation, six simulated lateral canals were prepared in the roots, according to the technique proposed by Venturi et al. (2005). The diameter of these canals was equivalent to # 08 and 10 instruments and are set at 2, 5 and 8 mm to working length (WL). The specimens were divided into nine groups (n=15), as follow: Group I (CVA + gutta-percha Denstply), Group II (CVA + Resilon), Group III (CVA + gutta-percha Odous), Group IV (CTE + gutta-percha Dentsply), Group V (CTE + Resilon), Group VI (CTE + gutta-percha Odous), Group VII (SO + gutta-percha Obtura Flow 150), Group VIII (SO + Resilon) and Group IX (SO + gutta-percha Odous Flow). After the obturation, the samples were analyzed by radiographic and clearing methods, according to percentage of filling the lateral canals, in the three thirds. The result were submitted to the Kruskal-Wallis test at 5% significance level, according to specific intra-group evaluations: CVA (Groups I, II and III), CTH (Groups IV, V and VI), SO (Groups VII, VIII and IX) and Resilon (Groups II, V and VIII). CVA and CTH assessments showed that the Resilon has great ability to fill lateral canals in the two tests, compared to the other materials, in the apical and middle thirds (p < 0.05). As for SO evaluation, all materials showed good filling capacity of the lateral canals in all thirds, except in the cervical third where Resilon was better by radiographic analysis (extension and area) and in the cervical and middle thirds for clearing analysis (extension)... (Complete abstract click electronic access below)
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Fonseca, Lívia Araújo da. "Reação em cadeia da polimerase (PCR) de sangue periférico e esplênico para diagnóstico de babesiose equina." reponame:Repositório Institucional da UnB, 2012. http://repositorio.unb.br/handle/10482/10428.
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Dissertação (mestrado)—Universidade de Brasília, Faculdade de Agronomia e Medicina Veterinária, 2012.Submitted by Albânia Cézar de Melo (albania@bce.unb.br) on 2012-05-07T12:50:48Z No. of bitstreams: 1 2012_LiviaAraujoFonseca.pdf: 1171532 bytes, checksum: 90ca1ac57eaf172667e321a1abe3f7c7 (MD5)
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A babesiose equina é uma doença que tem como agentes etiológicos a Theileria equi e a Babesia caballi. Essa enfermidade causa perdas diretas e indiretas. Os animais acometidos apresentam apatia, anemia hemolítica, hemoglobinúria, perda de desempenho atlético e pode levar a morte. Essa afecção provoca perdas econômicas devido à diminuição da comercialização de animais soropositivos e a restrição do trânsito dos mesmos. Após a fase aguda da doença, o animal não apresenta mais sinais clínicos, entretanto em casos de imunossupressão e estresse pode haver a reagudização da doença. O objetivo deste trabalho foi o de comparar os resultados obtidos com o uso das técnicas de esfregaço de sangue periférico, de punção esplênica e da Reação em Cadeia da Polimerase (PCR) e de verificar uma metodologia simples e precisa para diagnóstico de babesioses em cavalos portadores subclínicos, submetidos ao esforço físico ou competições. Foram avaliados em um primeiro estudo quinze animais hígidos, sem sinais clínicos de babesiose, sem raça definida, com peso médio de 350 Kg, idade entre 6 a 13 anos, de ambos os sexos e com histórico de infestação por carrapatos. No esfregaço de sangue colhido da orelha, nenhum animal apresentou resultado positivo enquanto que na punção esplênica cinco animais foram positivos para a presença de Babesia caballi ou Theileria equi. O esfregaço da punção esplênica parece ser mais eficaz em detectar casos latentes de babesiose em equinos. No segundo estudo foi colhido o sangue do baço, da ponta de orelha e da veia jugular de quinze animais hígidos para a confecção de esfregaços sanguíneos e PCR. Foram utilizados para este experimento equinos, machos e fêmeas, de diversas raças com massa aproximada de 450 kg e idade entre oito a dezesseis anos provenientes de centros equestres. Todos os animais foram negativos no esfregaço de sangue periférico e apenas um foi positivo na punção esplênica. Os resultados da PCR do sangue periférico e esplênico apresentaram baixa concordância o que corrobora com a necessidade de se utilizar mais de uma técnica para diagnosticar animais subclínicos. ______________________________________________________________________________ ABSTRACT
Equine babesiosis is a disease that has as etiologic agents Theileria equi and Babesia caballi. This illness provokes direct and indirect losses. The sick animals show athletic performance fall, apathy, hemolytic anemia, hemoglobinuria and death. Babesioses causes fall of the commercialization of soropositives animals and restricted movement of those. After acute phase, the animal stops to show clinical signs, but in situations of immunosuppression and stress the disease returns to be acute. The objective of this work was to compare the efficacy of these two techniques and to search for a simple and more precise diagnostic method for subclinical babesiosis in horses submitted to physical effort or competitions. Then, splenic punction and periferic blood smear were compared. In a first study, fifteen healthy horses, without clinical signs of babesiosis, median weight 350 Kg, age between six to thirteen years, both genders and with an history of tick infestation were used. Five animals were positive for Babesia caballi or Theileria equi, in splenic punction and none in blood smear. Both methods were little invasive, safe and easy to do, but the splenic punction smear seems to be more efficace to detect cronic babesioses in horses. In a second study, equines, both genders, median weighting 400 to 450 kg, aged 8 to 16 years old and from equestrian centers were used in this experiment. All animals were negatives for the presence of the etiologic agent on blood smears from the peripheral blood, only one were positive on the spleen punction. The results of the PCR of the peripheral blood and the spleen blood had low concordance what support the necessity to use more than one technique to diagnose subclinical animals.
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Eppinger, Marise. "Hemorragia pulmonar de esforço e o desempenho de equinos PSI (Equus caballus) em corridas de galope no Jockey Club do Parana." [s.n.], 1990. http://hdl.handle.net/1884/48945.
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Orientador: Ivan DecontoContem 2 fots. coladas
Dissertação (mestrado) - Universidade Federal do Paraná. Setor de Ciências Agrárias
Devido à freqüente associação da hemorragia pulmonar de esforço (HPE) com o mau desempenho em corridas, este estudo buscou uma associação da HPE com o desempenho dos animais através da colocação nas corridas. O desempenho foi avaliado somente pela classificação de chegada na corrida, com o grupo vencedor (1° e 2°) representando cavalos de bom desempenho e o grupo perdedor (3° e "n") os de mau desempenho. Usando um endoscópio de fibra óptica, com 170 cm de comprimento útil de trabalho, examinou-se um grupo de 121 cavalos puro-sangue-inglês até 60 minutos após a corrida para detectar sinais de HPE. Os exames endoscópicos avançaram até a bifurcação traqueal. Encontrou-se 76,9% dos animais com HPE. Entretanto, não houve casos de epistaxe. Os resultados foram avaliados para analisar a incidência de HPE relacionada à idade e ao sexo do animal, distância da corrida, colocação, e condição da pista. A pista (areia) tinha três variações: seca, úmida ou molhada. A incidência da HPE foi maior na pista seca (82,2%) do que na úmida (75,0%) ou na molhada (60,0%) .Sabe-se que em pistas de areia a velocidade do animal é maior na condição de pista seca quando comparada à molhada. De acordo com os achados supomos que com o aumento da velocidade no exercício encontrava-se maior incidência de HPE. Neste caso, poder-se-ia demonstrar uma relação da velocidade com a freqüência de HPE. Não se encontrou associação significativa do sexo nem tão pouco idade do animal, ou distância da corrida, com a freqüência de HPE. Foram colhidas amostras de secreção traqueobronquial por aspiração endoscópica para exame citológico no intuito de encontrar macrófagos com hemosiderina intracitoplasmática. Estas células estiveram presentes em 64,4% dos aspirados traqueobronquiais. Por outro lado, naqueles animais com sangue na traquéia (HPE) e macrófagos com hemosiderina (siderófagos) no aspirado, a freqüência encontrada foi 84,3%. Apesar da presença dos siderófagos significar uma hemorragia ocorrida recentemente, não se encontrou associação significativa dos casos positivos para siderófagos e a colocação na corrida. Também investigou-se uma associação entre a freqüência bem como a severidade da HPE e a colocação do animal na corrida. Observou-se tanto a freqüência quanto a severidade da HPE significativamente mais altas no grupo perdedor, indicando que animais de mau desempenho tiveram maior incidência de HPE (65,5%) do que os de bom desempenho (34,4%). Ademais, os graus de maior severidade (I e II) da hemorragia pulmonar de esforço ocorreram com maior freqüência (61.2%) do que os graus (III e IV) de maior severidade (15,7%)
Sem abstract
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Marangoni, Suzana Marcia. "Estudo do canal reverso de alimentos descartados comercialmente no varejo: análise do canal de produtos lácteos." Universidade de São Paulo, 2010. http://www.teses.usp.br/teses/disponiveis/96/96132/tde-06122010-144108/.
Full textAbstract:
Este trabalho refere-se ao estudo de um canal reverso de distribuição de produtos lácteos. O objetivo foi verificar a estrutura do canal reverso de produtos lácteos não comercializados e como ocorre o seu gerenciamento. Entendem-se como produtos não comercializados, alimentos lácteos não vendidos pelos atacadistas e varejistas, cujos prazos de validade ainda não expiraram. Especificamente, buscou-se identificar o design do canal reverso desses alimentos e quais as funções de cada membro participante de seu canal de distribuição; investigar como é feito o gerenciamento em relação à coordenação, às operações comerciais e à logística reversa do canal em foco, além de identificar o portfólio de produtos em questão. A relevância do estudo está na importância crescente dos canais de distribuição, os quais têm se desenvolvido e inovado tanto por meio de seus diferentes formatos, quanto pela agregação de valor aos seus membros, como estratégia competitiva de mercado. Este estudo objetivou conhecer o caminho contrário percorrido pelos produtos em questão no canal de distribuição, então chamado reverso, em referência às movimentações de materiais no sentido inverso ao da cadeia de distribuição. Atualmente no Brasil descartam-se toneladas de produtos alimentares. Sendo assim, por meio desta pesquisa, buscou-se verificar se há uma estrutura reversa gerenciada para o descarte e/ou reaproveitamento de produtos não comercializados. Este trabalho constitui-se em uma pesquisa exploratória e qualitativa, sendo realizado estudo de casos, dentre os quais foram pesquisados uma indústria, três distribuidores, dois atacadistas e seis supermercados. Como instrumentos de coleta de dados foram utilizadas entrevistas em profundidade. O principal resultado identificado neste estudo demonstra que as empresas participantes do canal de distribuição de produtos lácteos não possuem uma estrutura definida para o gerenciamento do canal reverso, ou seja, estas não têm um modelo do caminho contrário percorrido pelos produtos em questão no canal de distribuição, apesar do interesse demonstrado pelas empresas.This work refers to the study of a reverse channel distribution of diary products. The objective was to verify the structure of the reverse channel of diary products which were not commercialized and how their management occurs. It is understood as not commercialized products diary foods which were not commercialized by the wholesalers and retailers and which the validity data has not expired yet. This work tried to identify specifically the reverse channel design of these foods and the function of each participant member of the channel of distribution; to investigate how management is made regarding the coordination, the commercial transactions and logistic channel reverse in focus, and also identify the portfolio of products in question. The relevance of the study is due to the increasing importance of the distribution channels, which have developed and innovated by means of different formats, as well as for value aggregation to its members, as a competitive market strategy. The objective of this study is to know the contrary path of the products in question in the distribution channel, which is called reverse, in reference to the movements of materials in the inverse direction to the one of the distribution chain. Currently in Brazil tons of alimentary products are disposed. Therefore, by means of this research, the intention is to verify if there is a reverse management structure for the disposal and/or reuse of not commercialized products. This work consists in an exploratory and qualitative research, being carried out through case studies, which researched an industry, three distributors, two wholesalers and six supermarkets. As instruments of data collection the procedure used was in depth interviews. The main result identified in this study was that the participating companies of the distribution channel of diary products do not have a defined structure for managing the reverse channel, that is, there is no model of the contrary path of the products in question in the distribution channel, even though the companies show interest.
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Zeckoski, Rebecca. "Water quality modeling for the Kennet and Avon Canal, a navigational canal in an inland catchment." Thesis, University of Cambridge, 2010. https://www.repository.cam.ac.uk/handle/1810/226858.
Full textAbstract:
The Kennet and Avon Canal in southern England is experiencing severe water quality problems caused by inorganic sediment and algae. These water quality problems are affecting the angling sport of fishermen downstream of the confluence of the canal with the River Kennet. The Environment Agency has been called upon to remedy these issues, but before proceeding they desire a computer model capable of predicting the water quality impacts of various scenarios under consideration. No such model was available to them. This project identified the key solids generation and transport processes to be included in a water quality model for inland navigational canals. Where available, equations from the literature describing relevant processes were used or modified for inclusion in a canal modeling algorithm. Where literature was not available, water quality samples were taken to characterize needed relationships. The final algorithm was coded and tested using a simplified dataset that allowed clear evaluation of the simulated processes. After successful testing, the canal model was applied to the Kennet and Avon Canal. The time series predicted by the model were compared to observed hydrological, solids, and chlorophyll-a (representing algae) data at multiple points in the canal. The model adequately predicted all of these constituents at the monitored locations. The final task in the project required evaluation of six management scenarios proposed by the Environment Agency to address the water quality problem. The model suggests that filtration or other treatment of water in the canal near the confluence with the river is the best management option, as it will address both the elevated inorganic sediment and algae concentrations at the most critical point in the canal. Less desirable options include efforts that only target inorganic sediment, which could increase algal concentrations by increasing light availability; and diversion of surface flows from the canal, which could possibly damage the hydrologic balance of the canal while encouraging undesirable algal growth.
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Behboodi, Arash. "Réseaux coopératifs avec incertitude du canal." Phd thesis, Supélec, 2012. http://tel.archives-ouvertes.fr/tel-00765429.
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Dans cette thèse, les réseaux coopératifs sont étudiés sous cette hypothèse que la source est incertain par rapport le canal en opération. Dans le premier chapitre, des stratégies coopératives sont développées pour les canaux à relais simultanés (SRC) lesquelles se composent d'un ensemble de deux canaux à relais parmi lesquels le canal en opération est choisi. Cela est équivalent au canal de diffusion à relais (BRC). Les bornes sur la région de capacité de BRC général sont dérivées. Les résultats de capacité sont obtenus pour les cas particuliers du canal à relais simultané semi-dégradé et dégradé Gaussien. Dans le deuxième chapitre, le canal à relais composite est considéré où le canal est tiré aléatoirement d'un ensemble de la distribution conditionnelle. Le débit est fixé en dépit du canal actuel et la probabilité d'erreur (EP) asymptotique est caractérisée. Une nouvelle stratégie de codage sélectif (SCS) est introduit permettant aux relais de choisir -selon leur mesurage du canal - la meilleur schéma de codage entre Décoder-et-Transmettre (DF) et Comprimer-et-Transmettre (CF). Les théorèmes de codage de réseau bruit généralisées sont démontrés pour le cas de réseau unicast général où les relais utilisent soit DF soit CF. Dans le troisième chapitre, le spectre asymptotique de EP est introduit en tant que nouvelle mesure de performance pour réseaux composites. Il est démontré que chaque code avec le débit hors de la borne cut-set, abouti à EP égal à un et le spectre asymptotique de EP coïncide avec la probabilité d'outage pour les réseaux satisfaisant la converse forte.
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Icart, Sylvie. "Matrices polynomiales et égalisation de canal." Habilitation à diriger des recherches, Université de Nice Sophia-Antipolis, 2013. http://tel.archives-ouvertes.fr/tel-00805547.
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Dans ce mémoire, nous nous focaliserons sur un type de matrices particulier : les matrices polynomiales de Laurent, dont les éléments sont des polynômes de Laurent, c'est à dire des polynômes avec des puissances positives et négatives de la variable $z$. Ce type de polynômes ne peut être associé à un filtre causal mais il se rencontre notamment lorsqu'on étudie le spectre de signaux à temps discret en sortie de filtre à réponse impulsionnelle finie. Nous commencerons par présenter les propriétés des polynômes de Laurent, puis des matrices polynomiales de Laurent. Nous définirons notamment la L-forme de Smith qui est une extension de la forme de Smith classique, et donnerons une définition précise du degré et l'ordre de ces matrices (notions parfois confondues dans la littérature). Nous étudierons plus particulièrement les matrices para-hermitiennes et para-unitaires qui sont des matrices respectivement égales à leur matrice para-conjuguée ou dont l'inverse est égale à la para-conjuguée. Nous nous attacherons à développer leurs propriétés particulières en terme de degré notamment, et de factorisation. Lors de l'étude des systèmes et en traitement du signal, de nombreuses factorisations de matrices à coefficients constants interviennent: factorisations QR (à l'aide d'une matrice orthogonale et d'une matrice triangulaire), LU (à l'aide de deux matrices triangulaires: une inférieure et une supérieure), SVD (décompositions en valeurs singulières à l'aide de deux matrices unitaires), EVD (décompositions en valeurs propres-vecteurs propres). En particulier, le théorème spectral montre que toute matrice hermitienne est diagonalisable à l'aide d'une matrice unitaire, c'est-à-dire que les matrices intervenant dans l'EVD sont des matrices unitaires. La factorisation de Cholesky d'une matrice hermitienne définie positive se fait quant à elle à l'aide d'une matrice triangulaire et de sa transposée conjuguée. Ces factorisations ne peuvent pas s'étendre simplement aux matrices polynomiales car les coefficients de ces matrices n'appartiennent pas à un corps mais à un anneau (celui des polynômes de Laurent). De plus, certaines propriétés, comme par exemple la positivité, ne peuvent s'entendre que sur le cercle unité. Nous montrerons que dans le cas général, une décomposition EVD dont tous les termes sont polynomiaux pour une matrice para-hermitienne définie positive sur le cercle unité n'existe pas, mais qu'on peut presque-diagonaliser ces matrices à l'aide de matrices para-unitaires continues sur le cercle unité. Enfin, nous montrerons quel rôle jouent les factorisations des matrices para-unitaires dans l'égalisation aveugle de systèmes convolutifs multivariables.
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Millette, Denis. "Reclamation of canal seepage affected land." Thesis, McGill University, 1989. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=59411.
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Deep interceptor drains are commonly used to control canal seepage in southern Alberta, Canada. Recently, shallow grid drainage was introduced. A study was initiated in 1987 to assess the effectiveness of grid drainage to intercept canal and natural groundwater seepage and reclaim the resulting saline affected land.Using a groundwater flow model, MODFLOW, it was found that a single deep interceptor drain would have failed to intercept all canal seepage and maintain the water table downslope of the canal below the 1.0 m design water table depth. Conversely, simulations indicated that with a grid drainage system, all canal and natural groundwater seepage would be intercepted and the water table would remain below the design water table depth, with or without irrigation recharge that would maintain a steady state salt balance.
The benefits of fall irrigation were demonstrated using three test plots near the canal.
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Khan, Ali Akbar. "Bacterial penetration into root canal dentine." Thesis, Click to view the E-thesis via HKUTO, 2007. http://sunzi.lib.hku.hk/HKUTO/record/B39556918.
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Akhand, Md Nurul Alam. "A canal irrigation water allocation model." Diss., The University of Arizona, 1992. http://hdl.handle.net/10150/185910.
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A water allocation model was developed to assist with allocation of canal water to competing crop irrigation demands. Multi-period linear programming was utilized to optimally allocate water in both time and space to maximize benefits for an irrigated farm. Irrigation scheduling, crop response and canal water delivery models were used to support the water allocation decisions. The irrigation scheduling model supplied information on crop evapotranspiration and soil water storage. The crop response model predicted crop yield in response to the irrigation water applications. The canal delivery model checked the feasibility of supplying the allocation quantities through the control structures and turnouts. The allocation model was evaluated by tests of water allocation for the University of Arizona, Maricopa Agricultural Center demonstration farm. In crop scenarios which emphasized cotton production, the model recommended deficit irrigation for the barley, cotton, grapes and wheat fields during periods when the quantity of irrigation water demanded was greater than that supplied. Analysis of the effects of changes in water cost and crop returns showed the basis of the solution remained unchanged for a wide range of data. The basis was, however, found to be unstable with very limited water supplies. In addition to serving as a planning tool, the allocation model could be used as a real time management tool. It is believed to have broad applicability to other irrigation projects in other areas with characteristics similar to Arizona test conditions.
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Burden, Donald R. "The Whitewater Canal historic corridor guide." Virtual Press, 2006. http://liblink.bsu.edu/uhtbin/catkey/1338879.
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The former Whitewater Canal, built between 1836 and 1847, spanned a distance of seventy-six miles from Lawrenceburg to Hagerstown, Indiana.' Initial construction was financed by Indiana's Mammoth Internal Improvements Act of 1836; a bill that strained the financial resources of the state, forcing it into bankruptcy in the summer of 1839. Canal construction was stopped until 1842, when the state granted the privately organized and financed White Water Valley Canal Company a charter to complete the unfinished portion of the canal between Brookville and Cambridge City.The unwieldy Whitewater River, however, proved too formidable for the fledgling canal company. A series of floods, in conjunction with a costly law suit, forced the White Water Valley Canal Company into receivership in 1855. The company was purchased at auction in 1865 by the Whitewater Valley Railroad Company, a Cincinnati and Indianapolis Railway subsidiary. Between 1867 and 1868, the railroad company laid its tracks atop the towpath of the former canal.Today, the state of Indiana owns fourteen miles of former canal channel between Laurel and Brookville, Indiana. The state owned portion is maintained by the Indiana Department of Natural Resources, and is operated as the Whitewater Canal State Historic Site. The non-profit Whitewater Valley Railroad Museum runs excursion trains over much of the old towpath between Connersville and Metamora, Indiana. And the Indiana and Ohio short-line railroad operates over the former towpath between Harrison, Ohio and Brookville, Indiana.This paper provides an overview of the Whitewater Canal, a brief history of construction for each half-mile section of the canal between West Harrison and Brookville, and a survey of existing canal vestiges within each of those sections. The maps that accompany the list of construction sections identify the locations of numerous surviving canal structures as well the approximate locations of those structures either demolished or buried.The purpose of this project is to draw attention to an endangered segment of the former Whitewater Canal corridor. Roughly eighteen continuous miles of the old right-of-way between West Harrison and Brookville, Indiana is soon to be abandoned by the Indiana & Ohio Railroad, the current owner of the property. In addition to the picturesque scenery through which the right-of-way meanders, the old transportation route is steeped in the history of the Whitewater Valley and the State of Indiana itself. Ideal for recreational purposes and education, this threatened stretch of former canal corridor deserves attention and preservation.Department of Architecture
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Gay-Bellile, Olivier. "Architecture programmable pour le décodage canal /." Paris : École nationale supérieure des télécommunications, 1999. http://catalogue.bnf.fr/ark:/12148/cb37101038f.
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Thongsin, Amonthep. "The Kra Canal and Thai security." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2002. http://library.nps.navy.mil/uhtbin/hyperion-image/02Jun%5FThongsin.pdf.
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Siala, Mohamed. "Codage pour le canal d'enregistrement magnétique /." Paris : Ecole nationale supérieure des télécommunications, 1995. http://catalogue.bnf.fr/ark:/12148/cb35776874x.
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Songer, Jocelyn Evelyn. "Superior semicircular canal dehiscence : auditory mechanisms." Thesis, Massachusetts Institute of Technology, 2006. http://hdl.handle.net/1721.1/36165.
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Thesis (Ph. D.)--Harvard-MIT Division of Health Sciences and Technology, 2006.Includes bibliographical references.
Superior semicircular canal dehiscence (SCD) syndrome is a recently defined clinical disorder in which patients present to the clinic with vestibular symptoms, auditory symptoms, or both. Understanding the effect of SCD, a hole in the bony superior canal, on hearing will broaden our understanding of the mechanics of the inner ear and lead to better diagnosis and treatment of SCD syndrome. We evaluate the effect of SCD on cochlear responses to both air- and bone- conducted sound. In chinchilla SCD produces reversible changes in cochlear potential: an increased sensitivity to bone-conducted sound and a decreased sensitivity to air-conducted sound. Such differences in air- and bone-conducted sound (air-bone gaps) are typically associated with a conductive hearing loss due to middle-ear pathology; however, a SCD is an inner-ear pathology. We hypothesize that the SCD acts as a 'third window' into the inner ear, shunting volume velocity away from the cochlea and through the dehiscent canal, altering cochlear responses to sound. To qualitatively evaluate this hypothesis we measured sound-induced fluid motion within the SCD as well as the effect of SCD on sound-induced stapes velocity and middle-ear input admittance.
(cont.) Our results are consistent with the hypothesis that the SCD introduces a low-impedance shunt pathway. To quantitatively evaluate the third-window hypothesis we developed an anatomically and physiologically constrained lumped-element mechano-acoustic model that predicts the effect of SCD on cochlear responses. Our model also predicts the effect of anatomical variations, such as dehiscence size and location, on auditory sensitivity. This work demonstrates that an air-bone gap can be caused by pathological changes in inner-ear mechanics. Additionally, our model provides a framework that will be of direct clinical benefit in understanding the variable effects of SCD among patients.
by Jocelyn E. Songer.
Ph.D.
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Sarquis, Ana Lúcia Figueiredo. "Canal arterial em recém-nascidos prematuros." reponame:Repositório Institucional da UFPR, 2009. http://hdl.handle.net/1884/18043.
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