Hydrodynamics and suspended sediment transport in the Camboriú estuary - Brazil: pre jetty conditions

Estuarine hydrodynamics is a key factor in the definition of the filtering capacity of an estuary and results from the interaction of the processes that control the inlet morphodynamics and those that are acting in the mixing of the water in the estuary. The hydrodynamics and suspended sediment transport in the Camboriú estuary were assessed by two field campaigns conducted in 1998 that covered both neap and spring tide conditions. The period measured represents the estuarine hydrodynamics and sediment transport prior to the construction of the jetty in 2003 and provides important background information for the Camboriú estuary. Each field campaign covered two complete tidal cycles with hourly measurements of currents, salinity, suspended sediment concentration and water level. Results show that the Camboriú estuary is partially mixed with the vertical structure varying as a function of the tidal range and tidal phase. The dynamic estuarine structure can be balanced between the stabilizing effects generated by the vertical density gradient, which produces buoyancy and stratification flows, and the turbulent effects generated by the vertical velocity gradient that generates vertical mixing. The main sediment source for the water column are the bottom sediments, periodically resuspended by the tidal currents. The advective salt and suspended sediment transport was different between neap and spring tides, being more complex at spring tide. The river discharge term was important under both tidal conditions. The tidal correlation term was also important, being dominant in the suspended sediment transport during the spring tide. The gravitational circulation and Stokes drift played a secondary role in the estuarine transport processes.As trocas de água e materiais através das desembocaduras de estuários são de difícil quantificação e são de fundamental importância para o entendimento do funcionamento de estuários e da zona costeira. A hidrodinâmica e transporte de sedimentos em suspensão no estuário do rio Camboriú foram estudados através da realização de duas campanhas de campo em 1998 cobrindo as condições de quadratura e sizígia. O período do levantamento foi anterior à obra de construção do molhe em 2003 que alterou a morfologia da desembocadura, fornecendo assim importantes informações base sobre o sistema. Cada experimento cobriu dois ciclos de maré com medições horárias de correntes, salinidade, concentrações de sedimentos em suspensão e nível de água. Os resultados mostram que o estuário é parcialmente misturado com estrutura vertical variando em função da amplitude e fase da maré. A estrutura dinâmica do estuário é balanceada entre os efeitos estabilizadores gerados pelo gradiente vertical de densidade, que permite produzir fluxo de empuxo e estratificação, e os efeitos turbulentos gerados pelo gradiente vertical de velocidade, que gera mistura vertical. A principal fonte de sedimentos para a coluna de água são os sedimentos de fundo, periodicamente resuspendidos pelas correntes de maré. O transporte advectivo de sal e sedimentos em suspensão foi diferente entre condições de quadratura e sizígia, sendo mais complexo durante a sizígia. A circulação gravitacional e a deriva de Stokes apresentam um papel secundário nos processos de transporte estuarinos.CNP

Diseño de mezclas asfálticas integrando residuos sólidos de la industria automovilística (elastómero) y de vías (pavimento asfáltico envejecido) en Manabí, Ecuador

The purpose of this study is to design asphalt mixtures by integrating solid waste from used tires (elastomer) and aged asphalt pavement in Bolívar Canton, Manabí Province, Ecuador. The factors studied were 4%, 8%, 12% and 16% elastomer, and fine, average and coarse grading, using 52% aged asphalt pavement. A completely randomized two-way factorial arrangement, GxE+1, with thirteen treatments and three replications was used, where G corresponds to grading of aggregates used and E to elastomer. On the basis of the positive outcome of the design of asphalt mixtures with aged asphalt pavement, considering the addition of 4%, 8% and 12% of elastomer in the average and fine grading curves, it was concluded that the design can be used in light and medium traffic roads, such as those in Bolívar Canton, Ecuador.El propósito de la investigación es diseñar mezclas asfálticas integrando residuos sólidos de neumáticos fuera de uso (elastómero) y pavimento asfáltico envejecido en el Cantón Bolívar, provincia de Manabí, Ecuador. Los factores en estudio fueron el elastómero en los niveles 4%, 8%, 12% y 16%, y la granulometría fina, media y gruesa, empleando 52% de pavimento asfáltico envejecido. Además, se empleó el diseño completamente al azar de un arreglo bifactorial GxE+1 con trece tratamientos y tres repeticiones, donde G corresponde a la granulometría de áridos utilizados y E al elastómero. A partir del buen proceder del diseño de mezclas asfálticas con pavimento asfáltico envejecido, podemos concluir que, de la adición de 4%, 8% y 12% de elastómero en las curvas granulométricas media y fina, es posible utilizar aquel diseño en vías de tráfico liviano y medio, como el que se presenta en el Cantón Bolívar

Modelling the Dynamics of an Aedes albopictus Population

We present a methodology for modelling population dynamics with formal means of computer science. This allows unambiguous description of systems and application of analysis tools such as simulators and model checkers. In particular, the dynamics of a population of Aedes albopictus (a species of mosquito) and its modelling with the Stochastic Calculus of Looping Sequences (Stochastic CLS) are considered. The use of Stochastic CLS to model population dynamics requires an extension which allows environmental events (such as changes in the temperature and rainfalls) to be taken into account. A simulator for the constructed model is developed via translation into the specification language Maude, and used to compare the dynamics obtained from the model with real data.Comment: In Proceedings AMCA-POP 2010, arXiv:1008.314

Reutilización de residuos sólidos de elastómero y pavimento asfaltico envejecido y su impacto ambiental en Manabí - Ecuador

Evalúa el impacto ambiental de la reutilización de residuos sólidos de elastómero y pavimento asfáltico envejecido como alternativa para el diseño de mezclas asfálticas, contribuyendo de esta manera a la protección ambiental en Manabí – Ecuador. Los factores en estudio son el elastómero en los niveles 4%, 8%, 12% y 16%, y la granulometría fina, media y gruesa. Se empleó el diseño completamente al azar en un arreglo bifactorial GxE+1 con 13 tratamientos y 3 repeticiones, donde G corresponde a la granulometría de áridos utilizados y E al elastómero. En el diseño de mezclas asfálticas con pavimento asfáltico envejecido, permitió concluir que la adición de 4%, 8% y 12% de elastómero en las curvas granulométricas media y fina, favoreciendo a las propiedades del mismo para ser utilizado a nivel de campo en mezclas asfálticas modificas. En cuanto al análisis económico que se realizó, los tratamientos con menor costo fueron G1E1 con $45,04 y G2E1 con$45,07. Por lo que se evidencio que la reultización de estos residuos influye positivamente en la Provincia de Manabí en la Ciudad de Calceta, dado que se propone el adecuado manejo de los neumáticos fuera de uso, evitando la quema de estos residuos y disminuyendo consigo la generación de gases nocivos para el ecosistema y la salud pública, conjuntamente se logrará disminuir el almacenamiento de neumáticos en los rellenos sanitarios e incrementando la vida útil de estos depósitos; además se reducirá la demanda de materiales necesarios para la fabricación de nuevos pavimentos asfálticos, beneficiando mediante esta gestión a los habitantes del sector, contrarrestando impactos negativos y potenciando los positivos.Tesi

Os apaches sul-americanos: Conexões atlânticas e polícia de costumes no início do século xx

Este artículo analiza la circulación atlántica de apaches en los años previos a la Primera Guerra Mundial. Explora dos dimensiones de los desplazamientos territoriales y semánticos de este moderno tipo de delincuente francés: los viajes de apaches parisinos hacia América del Sur y los significados específicos que el personaje adquirió al llegar a estas costas. Asociado a formas delictivas resultantes de las inmigraciones masivas, como los ladrones viajeros y los proxenetas internacionales, el apache fue objeto de una campaña de policía de costumbres alrededor de 1912 en Buenos Aires y en Río de Janeiro. Reinventado en los circuitos culturales atlánticos, terminó por ocupar un lugar central en las prácticas de vigilancia y cooperación entre ambas policías.The article analyzes the Atlantic circulation of apaches in the years preceding World War I. It explores two dimensions of the territorial and semantic displacements of this modern type of French criminal: the trips of Parisian apaches to South America and the specific meanings the figure acquired upon arrival to this side of the Atlantic. Associated with forms of crime resulting from massive immigration flows, such as traveling thieves and international pimps, the French criminal was the object of a morality police campaign in Buenos Aires and Río de Janeiro around 1912. Reinvented in the Atlantic cultural circuits, the French criminal ended up holding a central position in surveillance and cooperation practices between the two police forces.Este artigo analisa a circulação atlântica de apaches nos anos anteriores à Primeira Guerra Mundial. Explora duas dimensões dos deslocamentos territoriais e semânticos desse moderno tipo de delinquente francês: as viagens de apaches parisienses para a América do Sul e os significados específicos que essa figura adquiriu ao chegar a essas costas. Associado a formas delitivas resultantes das imigrações massivas, como os ladrões viajantes e os proxenetas internacionais, o delinquente francês foi objeto de uma campanha de polícia de costumes ao redor de 1912 em Buenos Aires e no Rio de Janeiro. Reinventado nos circuitos culturas atlânticos, terminou por ocupar um lugar central nas práticas de vigilância e cooperação entre ambas as polícias.Fil: Schettini Pereira, Cristiana. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de San Martín. Instituto de Altos Estudios Sociales; ArgentinaFil: Galeano, Diego Antonio. Pontifícia Universidade Católica do Rio de Janeiro; Brasi

Generalized pustular psoriasis induced by systemic steroid dose reduction

Abstract: Generalized pustular psoriasis, or psoriasis of von Zumbusch, is an acute and severe clinical form of psoriasis, which usually occurs in patients with psoriasis undergoing aggravating factors. In this work, we report the case of a female patient, 70 years old, who developed generalized pustular psoriasis symptoms while reducing the dose of oral corticosteroids, improperly introduced for the treatment of alleged acute generalized exanthematous pustulosis. The differential diagnosis of generalized pustular psoriasis should be made with other pustular dermatoses, such as subcorneal pustulosis, IgA pemphigus and especially with acute generalized exanthematous pustulosis. Personal history of psoriasis and histopathological findings with psoriasiform changes and subcorneal pustule favored the diagnosis. She was treated with acitretin 30 mg / day, progressing to complete regression of the lesions

LA DISCIPLINA DEL COMPORTAMIENTO ORGANIZACIONAL: ESTRATEGIA PARA INSTITUCIONES UNIVERSITARIAS

En la actualidad existen diversas empresas audiovisuales en Ecuador con dificultades en su crecimiento, con base a esta problemática surge la investigación de evaluar el desempeño de las variables del comportamiento organizacional de la empresa Majestad TV en la provincia de Santo Domingo de los Tsáchilas, la metodología de investigación utilizada fue la cuali- cuantitativa en donde se emplearon métodos principales como es el de expertos quienes valoraron las variables y clásicos como es el inductivo enfatizando la dirección que se consideró en el estudio, el deductivo ayudó a descubrir las falencias que estaban afectando el comportamiento y el descriptivo se utilizó para medir y especificar los resultados de las diversas variables, también técnicas como la observación, entrevista, encuesta, caracterización de variables, Delphi, Kendall entre otras, para el análisis de confiabilidad del trabajo se establecieron tres herramientas el (RIR) Rango Intercuartílico Relativo, el equipo investigador propone un programa de mejoras con su respectiva priorización para que potencialice tanto el desempeño de los trabajadores como el desarrollo de la entidad. PALABRAS CLAVE: Comportamiento individual; grupal; sistemático; caracterización de variables; potencializar el desempeño; programa de mejoras. THE DISCIPLINE OF ORGANIZATIONAL BEHAVIOR: STRATEGY FOR UNIVERSITY INSTITUTIONS ABSTRACT Currently there are several audiovisual companies in Ecuador with difficulties in their growth, based on this problem arises research of evaluate  the performance of the variables of organizational behavior of enterprise Majesty TV in Santo Domingo the Tsáchilas province, the methodology used research was the qualitative-quantitative where main methods were used as the experts those who valued variables and classics as the inductive emphasizing the direction that was considered in the study, the deductive helped to discover the shortcomings that were affecting the behaviour and the descriptive, it is used to measure and also specify the results of the different variables, techniques such as observation, interview, survey, characterization of variables, Delphi, Kendall among others, for the analysis of reliability of work were established three tools the (RIR) relative interquartile range, the Alpha of Cronbach and the level of consensus, according to the result your procedure, it began with the search for the variables, then laid down and approved by experts on issues of organizational behavior for their respective implementation, used in surveys targeting partners where identified that there are weaknesses within the company generated by both individual and group behavior, these errors must  be corrected by the owner and because of this the research team proposes a program of improvements with its respective prioritization so you impel both the performance of the workers such as the development of the entity. KEYWORDS: Individual; group; systematic behavior; characterization of variables; enhance performance; improvement program