875 resultados para Estradas - Conservação e restauração


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It is remarkable the current planet’s situation of degradation and modification of natural assets and the considerable loss of the recovery power inherent to the ecosystems. Concomitant with this, all communities and species are suffering the consequences of these changes without planning. The creation of conservation units (UCs) through the National System of Conservation Units (SNUC) was a concrete action on the deliberateness of halting these processes, which, on the other hand, generated socio-environmental, geo-economical and cultural-political conflict of interests between traditional communities in the vicinity of these units, institutions, governmental entities and society in general. The country’s National Program of Environmental Education (ProNEA) provides the integration of the communities and UCs’ managers in a co-participative administration to solve these conflicts. The principles of Environmental Education (EA) leads the methodology found to change the socio-educational paradigms of traditional teaching, still existing in our society and intrinsically related to environmental problems, which are contrary to the dialogic pedagogy from Paulo Freire, that valorize popular knowledge, pro-active citizenship, as well as contrary to Ecopedagogy, that re-integrate human being on its natural environment, the Earth. One of the tools for starting environmental sensitization is the diagnosis by environmental perception of individuals. In this context, the objective of our work was to identify the environmental perception of Tenda do Moreno community located nearby Pau Furado State Park (PEPF) in Uberlândia – MG. To reach this objective, the research sought, in a first moment, to evaluate the environmental perception of residents of this community through semi-structured interviews applied in their homes and, in a second moment, we evaluated the environmental perception of community’ school students and made Environmental Education intervention activities with the intention to make children aware of the importance of conservation and function of PEPF. Using the Content analysis methodology, we found in nearly 60% of the 118 residents a systemic perception of nature, while approximately 32% expressed an anthropocentric perception. Mixed perceptions were found in 21%. A considerable part of the residents (47 individuals) indicated not knowing the park, although many of them recognize its importance. Among the 46 interviewed students, half expressed an anthropocentric perception of nature, while almost 36% had a systemic view. Seventeen children said they did not know the park and almost half of the students recognize some aspect of the importance of its existence. During the intervention activities, we had huge participation and dedication of students, beyond the massive expression of their personal views and daily experiences. In relation to the ten students that subjected the second evaluation about their environmental perception after the intervention, 80% showed systemic perception and emphasized the importance of conservation and of park. We believe that the continuity of the intervention activities could generate positive perspectives of socio-environmental effective changes in the daily school. Activities lead by Ecopedagogy and that encourage the citizen leadership in the young students are fundamental, while in the community, closer ties and dialog by UC’s managers would be important elements to generate effective change.

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A restauração de dentes endodonciados é um verdadeiro desafio perante as inúmeras possibilidades restauradoras que atualmente se apresentam. A decisão na escolha da melhor restauração para dentes posteriores endodonciados, com intuito de promover uma reabilitação estética e funcional, com menor prejuízo possível dos tecidos dentais e com maior longevidade é portanto, bastante complexa. Este estudo faz uma revisão de literatura para inter-relacionar o planeamento, a posição do dente na arcada e o tecido dentário remanescente com os diversos tipos de restauração (direta ou indireta). Avalia também a necessidade da colocação ou não de espigão e o seu tipo, assim como os tipos de cimentos utilizados durante o procedimento restaurador. Para tal foi efetuada uma pesquisa bibliográfica recorrendo aos motores de busca de MEDLINE, LILACS e PubMED, entre 2000 e 2015, com as seguintes palavras-chaves: “endodontically treated teeth”, “teeth restoration”, “tooth structure”, “post use”, “post materials”, “resin-based composite”, “ceramic”, “tooth fracture”, “cusp coverage”, “bicuspid”, “weakened teeth”, “cavity preparation design”. Concluiu-se que o sucesso de uma restauração em dentes posteriores endodonciados está na interpretação inicial do prognóstico antes mesmo do inicio do tratamento endodôntico e que quantidade e qualidade do tecido remanescente e o tipo de forças que incidirão no dente em questão, serão aspectos importantes na escolha do tipo de restauração e sua longevidade.

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Este trabalho buscou elucidar quais são as práticas de conservação preventiva aplicáveis a acervos de circulação dentro de uma biblioteca universitária. Objetivou investigar essas práticas através da revisão de literatura e elaborar um diagnóstico da situação do ambiente do acervo de circulação, ou acervo corrente, da Biblioteca Central Prof. Hugo Dantas da Silveira do Sistema de Bibliotecas (SiB) da Universidade Federal do Rio Grande (FURG). Sua metodologia se pautou na revisão teórica e na utilização de um roteiro de observação, tendo como objeto de estudo a biblioteca citada. Os resultados obtidos mostraram-se satisfatórios, demonstrando que, embora haja um déficit em relação a alguns itens observados, a Biblioteca Central pratica a conservação preventiva.

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Este trabalho buscou elucidar quais são as práticas de conservação preventiva aplicáveis a acervos de circulação dentro de uma biblioteca universitária. Objetivou investigar essas práticas através da revisão de literatura e elaborar um diagnóstico da situação do ambiente do acervo de circulação, ou acervo corrente, da Biblioteca Central Prof. Hugo Dantas da Silveira do Sistema de Bibliotecas (SiB) da Universidade Federal do Rio Grande (FURG). Sua metodologia se pautou na revisão teórica e na utilização de um roteiro de observação, tendo como objeto de estudo a biblioteca citada. Os resultados obtidos mostraram-se satisfatórios, demonstrando que, embora haja um déficit em relação a alguns itens observados, a Biblioteca Central pratica a conservação preventiva.

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The goal of this study was to compare areas under different forest restoration technologies in relation to abundance, richness, diversity and composition of the present fauna in the litter and soil. The treatments evaluated were: natural regeneration (RN); high diversity tree plantations (L) and nucleation (N). An area of secondary forest was included in the study as a reference of soil conditions. The experimental design was in randomized block with four replications. Samples were collected for extraction of mesofauna (October/2012; July and October/2013) and macrofauna (June and October/2013) in six points of each plot, totaling 24 samples per treatment. For collecting soil macrofauna was used TSBF method. The mesofauna was collected with a metal cylinder and extracted by Berlese-Tüllgren funnel. Litter and soil were collected separately at each point and the fauna was identified level of class/taxonomic order. The springtails were classified using morphotypes. In total, considering the mesofauna, macrofauna and three times collected were accounted 28618 organisms. In relation soil mesofauna, the evaluated technologies did not differ, after three years of restoration, in relation to total abundance of organisms and community composition. The Shannon diversity index (H), in soil mesofauna, followed a human impact gradient. This index was higher in natural regeneration, which not was undergone technical interventions and showed higher moisture in the soil. The tree planting technology, under the control of volunteer plants in total area, showed lower H index. In the case of litter mesofauna, the technologies did not differ in relation the mean richness, total abundance of organisms and community composition. Considering edaphic macrofauna, technologies did not differ in relation to the abundance and richness, and in the evaluation of June/2013, RN showed higher H index and differed in relation to the community composition of other technologies. In October/2013 evaluation, the differences between the technologies in relation to H index were narrower and these did not differ in terms of composition of soil macrofauna community. In litter macrofauna, in June/2013, the RN presented greater richness and H index when compared to other technologies and in evaluation October/2013 technologies did not differ in relation to community composition, richness and mean abundance of organisms. In the case of springtails, technologies after three years in the restoration process, did not differ in relation to the abundance, richness and composition of Collembola community for different morphotypes. The secondary forest, in relation to forest restoration technologies, presented greater abundance of saprophages, predators and greater diversity of morphotypes of springtails. From these results it, we recommended to natural regeneration by to have the lowest cost of deployment, followed by nucleation and online planting. The animals should be monitored over time, in the restoration technologies, as well as the physical and chemical characteristics of the soil, in order to understand the possible changes in the composition and diversity of organisms.

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Currently, the biodiversity is considered as a powerful food security strategy, ecological and economical for humanity. Brazil is one of the main centers of genetic diversity of native fruit in the world. However, little is known about most of these species. In southwestern Paraná region, this diversity can be found, however, due to human action to increase genetic erosion, it is losing genotypes with potential for use. Thus, the conservation of genetic resources is essential for reduction strategies for damage caused to the environment and the lack of tech-nical information to increase the use of them. This study aimed to obtain information for cre-ating on farm net conservation in four citties this region. This study was carried out in rural properties from Dois Vizinhos, Itapejara D’Oeste, Verê and São Jorge D'Oeste citties, Paraná State, Brazil. It was action plan was established with the rural communities through gathering information with agents considered key in the process, it seeking the greatest number of farm-ers who had their properties in the native fruits as pitanga, jabuticaba, uvaia, cereja-do-mato, guabiroba, guabiju, sete capote, goiaba serrana, araça amarelo e vermelho trees. Semi-structured questionnaire was applied, which concerned issues of presence, handling and use of Myrtaceae fruit trees on their properties and informed consent term. There was a survey of the number and native fruits present in each property. The characterization of each household in terms of diversity handled and used in native fruit was performed. It was realized the soil col-lect in 200 properties with the presence of at least some native fruit tree naturally occurring, in order to determine the preference of the species for the chemical characteristics of the soil. The four citties have native fruits trees in quantity and diversity for the creation of on farm net conservation, with farmers demonstrating knowledge of their role as guardians of this heritage of humanity.

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Algumas empresas de produção de bacalhau salgado pretendem iniciar a comercialização no mercado africano e/ou aumentar o mercado neste continente. Contudo, a rede de frio é frequentemente escassa, implicando grandes perdas económicas para as empresas nacionais. É possível atrasar a degradação do pescado através, por exemplo, do seu embalamento em vácuo e até em atmosfera modificada. Como tal, pretendeu-se embalar o bacalhau salgado seco a vácuo, e sobretudo em atmosfera modificada, de forma a aumentar o seu período de vida útil de prateleira em condições de abuso de temperatura. Foram estudados diferentes tipos de embalagem: (i) apenas com ar, (ii) embalagem a vácuo [com e sem a adição de metabissulfito de sódio (E223)] e (iii) em atmosfera modificada (EAM), 20% de CO2: 80% de N2, com e sem adição de E223; todos os tipos em condições de abuso de temperatura (15, 25 e 35ºC). O presente trabalho mostrou que o embalamento de bacalhau salgado seco a vácuo e, principalmente, emEAM poderá incrementar o tempo de vida útil de prateleira A temperatura de armazenamento mais uma vez comprovou ser um fator crucial uma vez que a menores temperaturas de armazenamento, o bacalhau apresentou um aspeto mais favorável, e maior foi o período de conservação, independentemente do tipo de embalamento do produto. O E223 beneficiou o produto armazenado a temperaturas mais baixas, mas não aparentou introduzir melhorias no bacalhau conservado a temperaturas acima de 25ºC. Em condições de abuso de temperatura (15, 25 e 35ºC), a preferência dos consumidores recai sobre a EAM (80%N2:20%CO2).

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The replacement of native vegetation by other land uses is one of the main degrading ecosystem agents, being the most important component of terrestrial environments, natural or with different levels of human disturbance, besides being the main substrate used by plants to obtain conditions soil for its development. In this context, there is the need to adopt the use and sustainable management of land systems. The study aimed to evaluate what is forest restoration system more efficient degraded areas, based on the potential recovery of physical, chemical, carbon and biological activity in the soil. The work was conducted in a forest restoration area UTFPR- Campus two neighbors, whose experiment was established in October 2010. The experimental design is completely randomized, with four replications and experimental plot of 40 m wide by 54 m long ( 2160 m2) were collected and six sampling points per plot. The soil is classified as a Typic. The models evaluated are: 1 - natural or passive regeneration; 2 - Nucleation; 3 - Planting trees in the total area under lines fill and diversity (total planting); 4 - Reference area (forest). The collection of soil samples in layers of 0.0-0.05, 0.05-0.10, 0.10-0.20 and 0.20-0.40 m was carried out in October 2013 and evaluated physical attributes of texture, bulk density, total porosity, microporosity and soil macroporosity and stability of water in households, chemical properties, and total organic carbon (TOC) and physical particle size fractionation and soil biological activity. To find the best forest restoration model, we designed a Restoration Quality Weighted Index for each variable analyzed. Natural regeneration and total plantation showed generally better soil aggregation over 0.10 m and nucleation volume of similar porosity the forest for these layers. There were no differences between the models below 0.10 m for the variables aggregation and soil porosity. The nucleation template had the lowest bulk density, but being greater than the density in the layer forest 0.05-0.10 m, however, was similar to below 0.10 m above the ground. The models had chemical properties similar to or greater than the forest. The forest had the highest stock of COT and carbon associated with minerals (CAM), but natural regeneration was similar to the particulate organic carbon (POC) in the superficial layers of the soil (0-0.10 m), below 0, 10 m, the forest showed higher stock of COT and COP on the ground. The highest peak of C-CO2 emissions occurred in the 28-35 day range where the total plantation was similar to forest. After four years of experiments, it was found that the effect of restoration methods on physical attributes and soil carbon restricted to 0.10 m deep.

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A qualidade dos alimentos é um conceito que tem vindo a despertar o interesse das indústrias e dos consumidores, daí a preocupação em conservar os produtos sob condições adequadas, evitando alterações físicas e químicas que ponham em causa a integridade dos alimentos, bem como as suas propriedades nutricionais e sensoriais. Deste modo, foi realizado um estudo para avaliar os efeitos do armazenamento sob certas condições de temperatura e diferentes tipos de embalagens sobre as propriedades dos miolos de nozes, avelãs e amêndoas com pele, embora no caso das amêndoas também se tenha estudoa do uma amostra sem pele. As amostras utilizadas eram originárias de Portugal, mas também de outros países, Chile, Espanha, Turquia, Roménia e Estados Unidos. O armazenamento das nozes durou 90 dias, e as condições testadas foram: temperatura ambiente; estufa a 30 e 50 °C, refrigeração (2 °C) e congelamento(15 °C). Os dois tipos de embalagem de plástico utilizados foram o polietileno de baixa densidade (PEBD) e polietileno de baixa densidade linear (PEBDL), comparando com as amostras armazenadas sem qualquer embalagem. No caso das amêndoas, uma das amostras apresentava-se sem pelicula. Foram avaliadas várias características dos frutos: a atividade de água (medida por um higrómetro), o teor de humidade (secagem em estufa até massa constante), a cor (com um colorímetro) e a textura (utilizando-se um texturómetro). A partir dos resultados obtidos concluiu-se que as amostras de diferentes origens são diferentes no que diz respeito ao teor de humidade, atividade de água e cor, independentemente das condições de armazenamento e tipo de embalagem. Os resultaram mostraram que as condições de armazenagem que melhor preservam as características estudadas dos frutos secos foram os de baixa temperatura, sendo observadas maiores alterações nos frutos armazenados a temperaturas elevadas, nomeadamente na cor. Assim verificou-se que os processos de refrigeração e congelação têm uma influência mínima nas características dos frutos, particularmente na humidade, na actividade da água, na dureza e friabilidade. Os resultados indicaram também que os frutos apresentam valores de aw inferiores a 0,6, para todas condições testadas, garantindo alguma estabilidade a nível das estabilidade microbiana e enzimática. A presença da pele no miolo de amêndoa, para todos os tratamentos, tem uma influência significativa na textura e cor. Finalmente, em relação ao tipo de embalagem, foi observado que o uso de sacos de plástico testados não parece contribuir para a melhoria das características dos produtos em relação às amostras não embaladas.

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Recolher dados para actualizar os conhecimento da diversidade parasitária dos mesocarnívoros mais abundantes nas regiões do sul de Portugal e relacionar a dispersão parasitária, a conservação e a saúde humana constituíram os principais objetivos deste estudo. Raposas (Vulpes vulpes), sacarrabos (Herpestes ichneumon), fuinhas (Martes foina), ginetes (Genetta genetta) e texugos (Meles meles) atropelados foram os carnívoros-hospedeiros em estudo. Um grupo de raposas caçadas foi também considerado parte da amostra. A informação geo-referenciada de todos os animais serviu para executar a análise espacial. Realizaram-se necrópsias meticulosas e procedeu­ se à recolha, identificação e preservação dos parasitas encontrados. Pela primeira vez em Portugal é registada a presença do parasita da gineta Ancytostoma martinezi. A correlação entre os factores humanos e ambientais e, a riqueza de espécies foi determinada estatisticamente. Densidade populacional, disponibilidade de égua, tipo de uso de solo e distância mínima às sedes de concelho não apresentaram uma relação estatisticamente significativa com a infecção parasitária das raposas. Os resultados obtidos relativamente à presença de parasitas zoonóticos nos animais silvestres em estudo fomentam o trabalho multidisciplinar entre a Biologia da Conservação e as ciências médicas. ABSTRACT; The aim of this study was to collect data in order to update the information related to the parasitic diversity of the predominant mesocarnívores in the southern regions of Portugal and to establish relationships between the parasite dispersal, conservation and human health. Road killed foxes (Vulpes vulpes), mongoose (Herpestes ichneumon), stone marten (Martes foina), common genets (Genetta genetta) and euroasian badgers (Meles meles) were the considered carnivore-hosts. A sample of hunted foxes was also regarded.AD the animals had geo-reference information, ultimately used for spatial analysis. Thorough necropsies were performed and macroparasites collected, identified and preserved. For the first time in Portugal Ancylostoma martinezi, a common genets parasite.is recorded. Statistical species richness and correlation between human and environmental factors were determined. Human population density, water drainage, soil use, minimum distance to head council cities and the infection status of foxes proved no significant statistical relation. Results obtained on zoonotic parasites present in wild animals enhance the necessity of multidisciplinary work between Biology conservation and medical sciences.

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Over time, humanity began to realize the negative impact that the modern world has caused to the environment. The Atlantic Forest is one of the richest biomes in biodiversity, covering more than 60% of all species on the planet. This biome covered about 15% of the Brazilian territory, leaving currently only 7% of its fully fragmented forest remnants. This was the biome that suffered most from modernization and strong anthropogenic pressures in Brazil. For the account of environmental degradation, in the second half of the nineteenth century there was a shift in thinking, giving greater emphasis on conservation of some natural landscapes, with the intention of removing the man still preserved nature. Based on American models of conservation there were created the Nature Conservation Units. This study aimed to analyze the environmental quality of the State Park Vitório Piassa, a Conservation Unit located in the city of Pato Branco - PR. The environmental quality was measured by use of bio-indicators and some environmental pressures that the Park has suffered over the years also were identified. Beetles of the familiy Scarabaeinae (Coleoptera: Scarabaeidae) were used as the bioindicators. To compare the most conserved areas and the most degraded areas of the Park, three specific sites were defined within the Atlantic Forest fragment, these insects were captured with pitfall traps and identified as to their species and genera. There were two collections in February and March 2015, which resulted in 945 individuals in 22 species and nine different genus. Then the population of beetles in each area were classified based on ecological measures such as species richness, abundance of individuals of each species through diversity index (Shannon and Simpson) to identify the differences between the sampled groups and equitability (Pielou) to measure the distribution of the total abundance of the species in each area. To meet the objective of identifying the environmental pressures that occur in PEVP, evidence were collected through photographs, watching the field, aerial images and conversations with the resident population in the park. Similarly, if made relevant to build on the project running by the municipality for the construction of infrastructure for public viewing. These data served as subsidies to confront the current situation of the park and the current Brazilian legislation for UC's of full protection, highlighting the existing socio-environmental conflicts in the park, involving political issues and the proximity of the Conservation Unit with the urban area of the city.

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A presente dissertação pretende contribuir para a compreensão dos processos de patrimonialização. Especificamente, exploram-se contextos quotidianos associados à prática do Cante Alentejano, delineando as suas reconfigurações e manifestações contemporâneas. A pesquisa é ancorada metodologicamente em investigação etnográfica na localidade de Santo Aleixo da Restauração (Moura). Neste contexto empírico, caracterizam-se os espaços sociais onde é desenvolvido o quotidiano do Cante Alentejano, de forma a perceber o dualismo entre a sua prática quotidiana e aquilo que é a sua patrimonialização, tal como é percepcionada pelos atores sociais locais; Abstract: This dissertation aims to contribute to the understanding of processes of heritagization. Specifically, we explore contexts of daily practice of Cante Alentejano and identify the current manifestations and reconfigurations of this practice. Methodologically, research is based in an ethnography conducted in the locality of Santo Aleixo da Restauração (Moura). In this empirical context, we analyse daily social spaces where Cante Alentejano has been developed, with the purpose of understanding the dualism between this daily practice and the process of patrimonialization, as i tis perceived by local social actors.