Qualidade da água de um reservatório e do solo da zona ripária sob diferentes usos na região semiárida do Rio Grande do Norte

Reservoirs are artificial ecosystems intermediate between rivers and lakes widely used in the Brazilian semiarid region as a way to provide water supply due to the said region’s water scarcity. The use of water from these supply sources for multiple uses, along with occupation and utilization of its riparian zone without proper management, directly influences the increased nutrient flow into aquatic environments, there with contributing to the acceleration of eutrophication. The semi-arid region is characterized by peculiar weather conditions, such as severe evaporation, high temperatures with little variation throughout the year and long water residence time, making it susceptible to prolonged drought occurrence, which tends to concentrate the nutrients in reservoirs, which favors the development of eutrophic conditions. Moreover, it is common soil use and occupation by carrying out activities with potential environmental impact on natural resources such as agriculture, livestock farming and lack of sanitation. The aim of this study is both to evaluate the water quality of the Cruzeta Reservoir, located in the semiarid region of Rio Grande do Norte, during a prolonged drought period, and assess the quality of its riparian zone soil under different uses, by monitoring physical-chemical variables. Along the prolonged drought, high levels of turbidity, suspended solids, nutrients and chlorophyll a were verified as present, therefore featuring low water quality. In the riparian zone of Cruzeta Reservoir, the areas under use of agriculture and livestock farming appeared as one of the main diffuse sources of nutrients to the said reservoir, featuring the highest levels of phosphorus and nitrogen in the soil, originated from decomposition of animal excreta and from the use of fertilizers, creating a tendency to increased eutrophication of such water supply source. The indicators of water and soil quality are useful for monitoring and evaluating the conservation status of natural resources, allowing the control and mitigation of the reservoir eutrophication process. This study confirmed the hypothesis that the reduction of water level, resulting from prolonged drought event, aggravates the symptoms of eutrophication; and also that using the soil under severalways modifies the physic chemical properties of the soil, having livestock farming and agriculture as the usages with greatest potential towards yielding P and N to the aquatic environment.

Os usos do território e a economia solidária no Rio Grande do Norte

The solidary economy as the organization of production, alternative to the capitalist economy provides new forms of organization and social behavior, that, in the sight of geography, it is shown by the different territory uses. The territory assume new meanings that, influenced by the Solidary Economy movement, tries to reach for new ways of acting that differ from social order already stablished. However, the different uses show themselves in a more complex and contradictory way, given that, in solidary undertakings, different corporative agents start to act, the State being a last resource on this process. Given this reality, our goal on the present paper is to analyze the different uses of the territory from the rural economic solidary undertakings and the relationship it establishes to the different agents involved on the socio-territorial dynamics on Rio Grande do Norte. Starting from a study that contemplates the territorial organization forms and contents of the analyzed phenomena, the methodology utilized for this research is based on a bibliographic review, with authors from the geography and areas related to the Solidary Economy, besides the use of secondary data, acquired from official offices such as SIES and IBGE, from the documented research, SENAES and field interviews conducted with local solidary undertakings. The results obtained in the study reveal the complexity of the agricultural use of the territory by Solidary Economy on the RN, while a resource of intensified use, from the state actions and important economical agents, and regulating the use while shelter, that marginalize solidary workers, making them subdued to the hegemonic logic. Therefore, we can infer that the solidary economy, despite its image of new form of organization between agricultural workers, given the expressivity of the rural solidary undertakings presented on RN, it hasn’t shown a full social development as an instrument of reproduction and emancipation of the associates. Nevertheless, the undertakings articulated in nets excel, even when considering its punctual and residual form. The given contradictions show that it is necessary to fortify the building of the solidary economy as being horizontal and popular based for it to have strength to surpass the regulative actions of the capitalist state and ownership created by the Capital.

Praias urbanas e racionalidade ambiental: avaliação da gestão, das intervenções urbanísticas e dos usos na praia de ponta negra

This dissertation addresses issues considered essential for sustainable development of urban waterfronts and beaches. Many of these spaces, even though they are of public authorities, economic market and general population interests - due to its landscape, its importance for recreation purposes and as a basis of " Sun and beach Tourism " (Turismo de Sol e Praia), among other factors - have shown aesthetic, health and cultural degradation, entailing environmental, economic and social losses and conflicts. Based on this perception, the research aims to understand the main reasons for these negative results for beach spaces. To this end, it was chosen the case study of a typical urban beach, Ponta Negra Beach, located in Natal, RN. Ponta Negra is associated with the "postcard" of the city and it has been deserving of municipal urban planning legislation that legally recognizes the importance of its landscape. Also it has received constant investments by the Government through urban projects, arguing to leave the site attractive to its users. Nevertheless, in the last fifteen years, the beach has lived with the expansion of its problems, such as those related to bathing water, to coastal erosion, and to the mangling of its natural surroundings. Social conflicts have also been frequent in this time frame: conflicts between residents of the waterfront and traders who work on the beach, between the traders themselves, between the managers of space and fishermen, between managers and formal and informal traders. Many of these social and environmental conflicts have taken such grand proportions that became legal matters. Assuming that the problems identified are related to the issue of rationality - understood as a system of values, norms and actions that relate means and ends - and upholding the need for focused research on "environmental rationality" to understand and interpret the dynamics of social and environmental problems encountered on site, the research that guides the study relies on the Mexican economist Enrique Leff's theory on "environmental rationality" which, briefly, can be defined as a system of values, norms, actions and means and ends relations based on the principles of environmental management and sustainable development. Among other aspects, rationality encompasses cross-sectional planning of public administration, the participation of society in the management of environmental resources, interdisciplinary reorganization of knowledge, the clash of opposing interests and the conciliation of common goals of different social actors. The study evaluates the relationship between "environmental rationality", as proposed by Enrique Leff, with the management, urban interventions and uses observed in Ponta Negra Beach. For that, some benchmarks were established and considered in the research as related to sustainable development of the "beachy" atmosphere. Analytical instruments chosen were the urban transformations and the environmental and social problems that have been the target of lawsuits. Also part of the study, the problems that were the subject of civil investigations, which are investigation procedures carried out by the Prosecutor's Office.

Praias urbanas e racionalidade ambiental: avaliação da gestão, das intervenções urbanísticas e dos usos na praia de ponta negra

This dissertation addresses issues considered essential for sustainable development of urban waterfronts and beaches. Many of these spaces, even though they are of public authorities, economic market and general population interests - due to its landscape, its importance for recreation purposes and as a basis of " Sun and beach Tourism " (Turismo de Sol e Praia), among other factors - have shown aesthetic, health and cultural degradation, entailing environmental, economic and social losses and conflicts. Based on this perception, the research aims to understand the main reasons for these negative results for beach spaces. To this end, it was chosen the case study of a typical urban beach, Ponta Negra Beach, located in Natal, RN. Ponta Negra is associated with the "postcard" of the city and it has been deserving of municipal urban planning legislation that legally recognizes the importance of its landscape. Also it has received constant investments by the Government through urban projects, arguing to leave the site attractive to its users. Nevertheless, in the last fifteen years, the beach has lived with the expansion of its problems, such as those related to bathing water, to coastal erosion, and to the mangling of its natural surroundings. Social conflicts have also been frequent in this time frame: conflicts between residents of the waterfront and traders who work on the beach, between the traders themselves, between the managers of space and fishermen, between managers and formal and informal traders. Many of these social and environmental conflicts have taken such grand proportions that became legal matters. Assuming that the problems identified are related to the issue of rationality - understood as a system of values, norms and actions that relate means and ends - and upholding the need for focused research on "environmental rationality" to understand and interpret the dynamics of social and environmental problems encountered on site, the research that guides the study relies on the Mexican economist Enrique Leff's theory on "environmental rationality" which, briefly, can be defined as a system of values, norms, actions and means and ends relations based on the principles of environmental management and sustainable development. Among other aspects, rationality encompasses cross-sectional planning of public administration, the participation of society in the management of environmental resources, interdisciplinary reorganization of knowledge, the clash of opposing interests and the conciliation of common goals of different social actors. The study evaluates the relationship between "environmental rationality", as proposed by Enrique Leff, with the management, urban interventions and uses observed in Ponta Negra Beach. For that, some benchmarks were established and considered in the research as related to sustainable development of the "beachy" atmosphere. Analytical instruments chosen were the urban transformations and the environmental and social problems that have been the target of lawsuits. Also part of the study, the problems that were the subject of civil investigations, which are investigation procedures carried out by the Prosecutor's Office.

Um brinde à cachaça: o patrimônio históricocultural e seus usos turísticos nos alambiques do Rio Grande do Norte

The study proposes to present a discussion about the value of cachaça as a cultural heritage and its relation with the touristic activities in the State of Rio Grande do Norte. Based on a discussion originated from historic studies related to the touristic sector, especially when it comes to gastronomy, cachaça is defined not only as an important instrument to the construction of identities, but, also, as an element able to weave social, political and economic relations. Therefore, a touristic product that can provide new destinations. The research was made through five alembics located on the East and Seridó regions of Rio Grande do Norte. To define the focus, it is necessary to refine this selection, especially when dealing with historical facts and memories from these establishment owners. Thus, it becomes necessary to consider the alembic trajectory, periods of larger productions and insertion in the touristic market. Through documental data collection and observations made in field tours, the research has a qualitative approach with descriptive and exploratory goal, methodology that allows us to approach issues around articulations among heritage, identity and tourism. "It was concluded that the state of Rio Grande do Norte has many tourist routes where handmade cachaça produced in the State can be inserted in any of these routes due to its potential searched in the research, as well as, it is possible to work in other perspective when it comes to ways of protecting this patrimony and strategies of incentive of the activity for the development and appreciation of local economy.

Usos de membranas de quitosana na remoção de cobre em águas residuais

In this work a chitosan (CS) ionically crosslinked were manufactured by treatment with sulfuric acid solution for application in the treatment of wastewater from oil industry. Two crosslinking process were developed: homogeneous and heterogeneous. In the homogeneous process the ratio molar of SO42-/ NH3+ (1:6 and 1:4) were the variable analyzed, denominated CS16 and CS14 respectively. In the heterogeneous process the soaking time of the membranes in sulfuric acid solution were the variable studied, being used times of 5 (CS5) and 30 (CS30) minutes. FTIR-ATR results indicated no changes in the characteristics of chitosan after homogeneous crosslinking process, while heterogeneous crosslinking showed formation of ionic bonds between protonated groups from chitosan and the crosslinking agent sulfate ions. TG/DTG and XRD analysis confirmed the formation of these interactions, as also shown the new structure on the surface region of CS5 and CS30 membranes compared to CS, CS16 e CS14. Swelling test in aqueous medium have shown that crosslinking process reduced the membrane sorption capacity. Swelling test in acid medium demonstrated that CS16 and CS14 membranes increasing the adsorption capacity up to a maximum percentage of 140% approximately, whereas the CS5 e CS30 reached a maximum of 60%. The mechanical properties indicated the stiff and ductile behavior of crosslinked membrane. Adsorption experiments of CuCl2 results that CS16 membranes reached the efficiency maximum with 73% of copper removal at pH 5.0 and 87% at pH 4.0. The experiments with CuSO4 also obtained efficiency maximum to the CS16 membrane and 80% to the removal of Cu2+ ions. Also was verified that the increase of concentration and temperature cause a decrease in the adsorption capacity for all membranes. Kinetics study indicated that pseudo-second-order obtained characterized better the membranes. Equilibrium studies demonstrated that the CS, CS16 and CS14 follow the Langmuir model, whereas CS5 and CS30 follows Freundlich model. Filtration experiments results with rejection maximum to the CS16 and CS5 membranes, reaching 92 and 98% respectively.

Usos de membranas de quitosana na remoção de cobre em águas residuais

In this work a chitosan (CS) ionically crosslinked were manufactured by treatment with sulfuric acid solution for application in the treatment of wastewater from oil industry. Two crosslinking process were developed: homogeneous and heterogeneous. In the homogeneous process the ratio molar of SO42-/ NH3+ (1:6 and 1:4) were the variable analyzed, denominated CS16 and CS14 respectively. In the heterogeneous process the soaking time of the membranes in sulfuric acid solution were the variable studied, being used times of 5 (CS5) and 30 (CS30) minutes. FTIR-ATR results indicated no changes in the characteristics of chitosan after homogeneous crosslinking process, while heterogeneous crosslinking showed formation of ionic bonds between protonated groups from chitosan and the crosslinking agent sulfate ions. TG/DTG and XRD analysis confirmed the formation of these interactions, as also shown the new structure on the surface region of CS5 and CS30 membranes compared to CS, CS16 e CS14. Swelling test in aqueous medium have shown that crosslinking process reduced the membrane sorption capacity. Swelling test in acid medium demonstrated that CS16 and CS14 membranes increasing the adsorption capacity up to a maximum percentage of 140% approximately, whereas the CS5 e CS30 reached a maximum of 60%. The mechanical properties indicated the stiff and ductile behavior of crosslinked membrane. Adsorption experiments of CuCl2 results that CS16 membranes reached the efficiency maximum with 73% of copper removal at pH 5.0 and 87% at pH 4.0. The experiments with CuSO4 also obtained efficiency maximum to the CS16 membrane and 80% to the removal of Cu2+ ions. Also was verified that the increase of concentration and temperature cause a decrease in the adsorption capacity for all membranes. Kinetics study indicated that pseudo-second-order obtained characterized better the membranes. Equilibrium studies demonstrated that the CS, CS16 and CS14 follow the Langmuir model, whereas CS5 and CS30 follows Freundlich model. Filtration experiments results with rejection maximum to the CS16 and CS5 membranes, reaching 92 and 98% respectively.

ASSEMBLEIA DE DEUS MINISTÉRIO BELÉM EM ITAPECERICA DA SERRA: TRANSFORMAÇÕES SOCIOCULTURAIS DOS USOS E COSTUMES

Esta dissertação tem como objetivo estudar as transformações socioculturais dos usos e costumes da igreja Assembleia de Deus Ministério Belém em Itapecerica da Serra no bairro Crispim. Dentro desta perspectiva procuramos entender as razões que permeiam ainda hoje o discurso ideológico e conservador da igreja em estudo diante da flexibilização e dos novos paradigmas assembleianos referente aos usos e costumes. Atualmente a igreja Assembleia de Deus em Itapecerica da Serra passa por um processo de mudança e ressignificação em seus usos e costumes. Pretendemos discutir a possibilidade de que tais mudanças sejam oriundas do contato com diferentes pentecostalismos existentes em Itapecerica da Serra, e também do próprio desenvolvimento sociocultural da sociedade. Tenta-se nesta pesquisa estudar as mudanças dos usos e costumes como parte da teia de significados produzida pela Igreja Assembleia de Deus. Como processo metodológico utilizamos fontes históricas, dados publicados em livros, artigos, jornais da própria igreja que auxiliarão na confrontação dos dados encontrados em entrevistas realizadas com assembleianos de Itapecerica da Serra. Os resultados desta pesquisa estão apresentados em três capítulos cujo eixo central é a discussão das transformações socioculturais dos usos e costumes

Metodologías y usos de la imagen en la pintura figurativa contemporánea: fragmentación, borrosidad y estética digital

Esta investigación trata de ofrecer una visión concreta acerca de porque un buen número de artistas, están trabajando con imágenes que comparten estéticas o numerosos elementos visuales. El objetivo principal no son, de hecho, los artistas, sino más bien las razones que podrían llevarles a adoptar estas estéticas. La investigación se divide en tres partes principales, y una cuarta que funciona como introducción a las diversas problemáticas planteadas. La primera trata acerca de cómo la fragmentación ha influenciado a la pintura de algunos artistas y pretende encontrar las razones de esta influencia. La segunda se centra en un tipo de pinturas conocidas como “borrosas”, cercanas al concepto de “efecto Tuymans” que ideó Jordan Kantor. La última parte de este trabajo aborda como el mundo digital y concretamente los gráficos de ordenador, han podido influenciar también el modo en que pintamos...

Gitanos argentinos y Argentinos Gitanos. Reconfiguraciones semánticas desde la mirada sociológica

En esta ponencia me propongo abordar el tema de las reconfiguraciones semánticas en torno a la construcción de la identidad y de la otredad, vinculada al pueblo gitano. Pensar desde una de las identidades no implica anular la otra, o las otras identidades posibles, no implica tampoco ocultarla. Sin embargo no podemos dejar de observar y de poner de manifiesto los procesos tendientes a invisibilizar, solapar y delimitar las fronteras de las identidades negativizadas. La reconfiguración semántica se torna indispensable para abordar otros esquemas de pensamiento, otro tránsito circular del lenguaje emergente de una práctica social específica, que se hace presente en la palabra, el discurso y que genera y determina a la vez prácticas sociales que son determinantes a su vez de nuevas prácticas y usos lingüísticos. Observaremos la biopolítica y su modo de habitar en el lenguaje, específicamente en la oralidad del pueblo gitano, y los modos de insubordinación que nos propone la micro política, como base del movimiento rizomático del lenguaje. Movimiento cuyo caos no implica desorden, pero sí nuevos horizontes de sentido y de rupturas extrínsecas e intrínsecas a las múltiples caras que presenta el poder. Una de las reconfiguraciones semánticas implica resignificar la palabra oralidad que a su vez habita en el nomadismo, en el cual el fuerte poder de las representaciones sociales, nos orienta hacia la idea de movimiento, de traslado, del devenir, devenir que ha quedado sometido a las condiciones del contexto de los procesos de globalización, especialmente en los últimos cien años. Esta ponencia es parte de un trabajo de investigación mayor, que intenta llenar un vacío de conocimiento en torno a este pueblo y sus usos y procesos de construcción del lenguaje

Estrategias para el desarrollo humano y procesos alfabetizatorios múltiples

Es necesario reflexionar que al decir "nuevo", no implica pensar "mejor". No hablamos de un sujeto social que necesariamente o por "imperio del devenir histórico" ejerce su ciudadanía. No es así, hablamos del sujeto a descubrir, desmembrado de la red social que le dio origen, atravesado por múltiples variables que conforman una batería opuesta a las variables propias del Desarrollo humano. Nos interrogamos acerca del "nuevo sujeto social de las pobrezas". Y nos interesa observar cómo opera la idea madre de Desarrollo Humano en consonancia con la diversidad cultural, étnica y las crisis de alteridad. Para ello tenemos en cuenta que la pobreza no tiene la misma representación social para todas las culturas y étnias. El abordaje que proponemos se realiza desde un concepto pedagógico dialéctico y dialógico que opera con los procesos alfabetizatorios múltiples, entendidos como aquellos procesos de enseñanza-aprendizaje que en su dimensión social se manifiestan en el plano material y simbólico (discursivo) como estrategias articuladoras para el Desarrollo Humano. Esta reflexión se enmarca en el taller "Las Alfabetizaciones: ¿Estrategias para el desarrollo humano?" realizado durante el transcurso de este año. La mirada y la acción propuesta desde la doble hermenéutica atraviesan tres instancias: 1- La propia del aprendizaje del taller, plasmada en la interacción docente-alumno. 2- La propia del curso en el abordaje específico de las temáticas planteadas en la reflexión metodológica y sociológica. 3- La experiencia pedagógica y, a través de ésta, la propuesta de investigación diseñada por los cursantes

¿Que significa Rehabilitar? Alteraciones posturales y prácticas corporales orientadas a los usos y acciones del cuerpo

Este trabajo se propone realizar un analisis de las prácticas que se realizan bajo el nombre de rehabilitación y el modo en el que se abordan esas prácticas, con aquellas personas que se adhieren a algun programa para "rehabilitarse". Tal como nos demuestra la practica profesional ,en la mayoria de los casos asisten por prescripción médica despues de haber sufrido alguna lesion deportiva,enfermedad o por dolores y molestias ocasionados como consecuencias de habitos de vida sedentaria. En este contexto nos proponemos comparar dos miradas en torno a la rehabilitacion para abordar las alteraciones posturales. Para ello se exponen, por unlado, un abordaje tradicional vinculadas a la mirada y tratamiento medico y, por otro lado, un abordaje posible desde la mirada de las practicas corporales. Finalmente se resalta la importancia de una integracion de las miradas para realizar un abordaje en su mayor complejidad posible