Art públic, regeneració urbana i participació. El projecte Cartografies de La Mina

[eng] The evolution of public art throughout the twentieth century has resulted since the 60"s in a kind of practical intervention in the urban domain with a strong social and participatory intention. This paper presents several of these projects in relation to the kind of participattory levels, and detecting different trends. The paper Specially focuses on the project"Cartografies de La Mina", developed in Sant Adrià de Besòs (Barcelona) between 2002 and 2005 by the POLIS Research Centre at the University of Barcelona.

Seis aspectos de la participacion en procesos de transformacion urbana

La participación ciudadana en procesos de transformación del espacio público se incluye cada vez con más fuerza en la gestión de las ciudades, como forma de construcción de urbes y ciudadanía con consecuencias positivas en varios niveles. Pero la complejidad de este tipo de experiencias -donde ciudadanía, Administración y profesionales implicados deben trabajar a favor de una mejora substancial- retrasa y a veces paraliza este tipo de procesos, que requieren un cambio de cultura profesional y cívica. En este artículo no se plantean modelos ni fórmulas, sino que se reflexiona sobre seis aspectos transversales a este tipo de experiencias participativas: la ciudadanía como protagonista; la participación como oportunidad de adaptación de la urbe al ciudadano; la emergencia de la creatividad en los procesos; la relación entre participación y representación-generación de identidad; el concepto de apropiación del espacio público, y finalmente la necesidad de permeabilidad por parte de los agentes implicados.

Regeneración urbana en Chile y Cataluña. Análisis de estrategias en fases de diseño e implementación

Las ciudades evidencian procesos degenerativos y de desigualdad como resultado del ajuste político-económico a la globalización. Consecuencias de este fenómeno se observan a nivel barrial, lo que no es sólo el resultado del abandono de ciertas áreas sino, frecuentemente, es consecuencia directa o indirecta de acciones públicas. Los gobiernos están desarrollando políticas públicas y acciones para la regeneración de áreas deterioradas, con objetivos diversos, destacando la cohesión social como una prioridad. Este artículo se propone comparar y analizar las intervenciones desplegadas en Cataluña (Llei de Barris) y Chile (programa Quiero mi Barrio). Ambas iniciativas declaran basarse en enfoques integrales, por lo que resulta importante analizar la existencia de mecanismos para la coordinación e implementación de acciones transversales -sociales, físicas y/o económicas- que requieren acciones consorciadas y la inclusión de los principales actores concernidos. Una preocupación del equipo investigador es indagar en la relación entre el diseño de esas políticas y su traducción en prácticas efectivas.

(Re)ordenació urbana de Figueres : sector de l’estació convencional

Estudi urbanístic de la ciutat de Figueres i proposta d’ordenació del sector i de l’estació de tren de la ciutat

La cultura marittima nei progetti di rigenarazione urbana del porto vecchio, Barcellona

Port cities have represented one of the first forms of urbanization in which maritime culture has had an important role in the construction of the city. This culture has often been the foundation of an evolving tendency confronted with other lines of development, against which it has alternately integrated itself creatively, or has had to compete. The study of the multiplicity of these evolving processes, with their corresponding conflicts, can be useful to develop a critical vision of the grand transformations of industrial ports in urban areas and to initiate a critical reflection which would help to interpret current tendencies. The Barcelona case seems to be exemplary because the new projects for the transformation of the old port, focused on providing a service for luxury boats, have reopened a discussion on urban transformation works carried out in the past and have mostly revealed that the relationship between the port and the city is in constant evolution.For this reason there is a discussion about the extent to which large scale port transformations can have repercussions on maritime culture in a locality and what the role of maritime culture is with respect to fundamental economic strategies linked mostly to the construction of the post-Fordist city

Determinação de Ácidos Carboxílicos na Atmosfera Urbana de São Paulo: uma abordagem analítica e ambiental

In this work, analytical strategies are evaluated in order to measure accurately the ambient levels of atmospheric organic acids. Environmental considerations about the determination of low molecular weight mono- and di-carboxylic acids from urban areas of São Paulo are described.

Otimização de um mecanismo fotoquímico para a simulação da atmosfera urbana brasileira

A photochemical reaction mechanism for the description of air quality in Brazilian urban regions is described and evaluated by comparison with chamber experiments. The mechanism was developed for use in ozone modeling and application of control strategies. The oxidation of ethanol and methyl-ter-butyl-ether is also considered. Using this chemical model, a trajectory simulation of Brazil Avenue, Rio de Janeiro, was performed. The model predicts that ozone should reach a maximum of 22.4 ppb at 14:57 h. This value is in good agreement with the experimental measurements of 22.5 ppb for 14:00 h and 22.3 ppb for 15:00 h.

Eletrocatálise e poluição ambiental

This work considers mainly the problem of environmental pollution due to the production of energy by burning fossil fuels, particularly in urban vehicles. Electrochemical energy conversion is proposed as a partial solution to this problem, through the use of hydrogen in fuel cells. In both the production of hydrogen by electrolysis and in the electrochemical processes in fuel cells, the key factor is electrocatalysis. The concept of electrocatalysis, the production of catalysts and supported catalysts and their use in practical systems for the conversion of energy is discussed.

Distribuição de coprostanol (5beta(H)-colestan-3beta-ol) em sedimentos superficiais da Baía de Guanabara: indicador da poluição recente por esgotos domésticos

A critical evaluation is presented on the use of faecal sterols for the identification of sewage contamination in Guanabara Bay. Sediments were collected from 8 stations in the bay selected as representative of different contamination levels. GC/MS determination of faecal sterols gave: coprostanol, 335 - 40000 ng g-1; coprostanone, 112-4136 ng g-1; cholesterol, 1407-7800 ng g-1; cholestanol, 2011 - 10900 ng g-1 and cholestanone, 655-7954 ng g-1. The observed concentration is in accordance with the presence of known pollution sources, however, concentration ratios of different sterols species produced unclear results evidently influenced by primary production and microbial processes.

Propagação da poluição atmosférica por flúor nas águas subterrâneas e solos de regiões próximas às indústrias de fertilizantes (Rio Grande, RS)

Fluoride concentration was determined in rainwater, ground water and soil in the zone of fertilizer industry in the city of Rio Grande. In contaminated rainwater fluorine concentration was registered up to the value of 4,4 mg.L-1. Fluorine concentration in the shallow ground water in general reflects its distribution in the atmosphere, but cannot be used as marker of atmosphere contamination in the urban area due to dissolving influence of residential effluents. The 0,01% HCl extracts from the set of surface soil samples demonstrates fluoride distribution in the zone of influence of industrial emissions, which coincides to the numerical simulation of fluorides dispersion in the air.

Desenvolupament de visor web per a consulta de guia urbana única dels municipis de Mallorca

Disseny i implementació d’aplicació web destinada a consulta d’informació urbana en els municipis de Mallorca. Localització de punts d’interès. Implementació pilot en el municipi de Santa Eugènia, Mallorca

Avaliação de poluição do ar por chumbo particulado: uma abordagem geoquímica

High lead concentrations up to 5478 mg kg-1 were detected in dry atmospheric precipitations in Rio Grande city and adjacent area. Lead anomalies cover up to 30% of the study area. Lead concentration measurement in dry atmospheric precipitation and suspended particulate matter provides a possibility to detect concentrations above lead threshold in the air. The most impacted areas are fishermen's villages. The most possible source of lead in the air is uncontrolled sub industrial activity of local population