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31.
Pavão Diogo C. Porteiro João Ventura Maria A. Borges Silva Lurdes Medeiros António Moniz Ana Moura Mónica Moreira Francisco Silva Luís 《Environment, Development and Sustainability》2021,23(11):16504-16528
Environment, Development and Sustainability - Tourists have become increasingly interested in certain aspects of their destination, including landscape and biodiversity elements, thereby promoting... 相似文献
32.
Aemro Yohannes Biru Moura Pedro de Almeida Aníbal T. 《Environment, Development and Sustainability》2021,23(10):14697-14721
Environment, Development and Sustainability - The use of low efficient cookstoves has several severe negative impacts. Burning solid fuels kills about 4 million people every year, a number which is... 相似文献
33.
Erica Souto Abreu Lima Talita de Santana Matos Helena Saraiva Koenow Pinheiro Leonardo Durval Duarte Guimarães Daniel Vidal Pérez Nelson Moura Brasil do Amaral Sobrinho 《Environmental monitoring and assessment》2018,190(6):364
The increasing concern regarding the preservation of soil quality suggests the adoption of quality reference values as a first step in environmental monitoring actions. In this context, the objective of this study was to establish soil quality reference values for Al, Zn, Mn, Cd, Fe, Pb, Ni, Cr, and Cu and to correlate several soil properties with the occurrence of these elements in the hillslope region of Rio de Janeiro State. Sixty-two samples were collected at depths of 0–20 and 20–40 cm and analyzed using the USEPA method 3051A. After clustering analysis, the samples were separated into three groups. Classification functions were obtained based on the variables pH - Mg - Fe - Mn, i.e., the variables that were best related to heavy metal content. We determined to establish the quality reference values for the 75th percentile of the three groups. The relief forms of the area, which facilitate the transport of soil fine-particle fractions and accumulation in lowlands, were revealed to be one of most important factors in understanding the distribution of soil heavy metals. 相似文献
34.
Giovanna Moura Calazans Carolina Cristiane Pinto Elizângela Pinheiro da Costa Anna Flávia Perini Sílvia Corrêa Oliveira 《Environmental monitoring and assessment》2018,190(8):491
This study sought to evaluate and propose adjustments to the water quality monitoring network of surface freshwaters in the Paraopeba river basin (Minas Gerais, Brazil), using multivariate statistical methods. A total of 13,560 valid data were analyzed for 19 water quality parameters at 30 monitoring sites, over a period of 5 years (2008–2013). The cluster analysis grouped the monitoring sites in eight groups based on similarities of water quality characteristics. This analysis made it possible to detect the most relevant monitoring stations in the river basin. The principal components analysis associated with non-parametric tests and the analysis of violation of the standards prescribed by law, allowed for identifying the most relevant parameters which must be maintained in the network (thermotolerant coliforms, total manganese, and total phosphorus). The discharge of domestic sewage and industrial wastewater, that from mining activities and diffuse pollution from agriculture and pasture areas are the main sources of pollution responsible for the surface water quality deterioration in this basin. The BP073 monitoring site presents the most degraded water quality in the Paropeba river basin. The monitoring sites BP094 and BP092 are located geographically close and they measure similar water quality, so a possible assessment of the need to maintain only one of the two in the monitoring network is suggested. Therefore, multivariate analyses were efficient to assess the adequacy of the water quality monitoring network of the Paraopeba river basin, and it can be used in other watersheds. 相似文献
35.
Oliveira Janaína de Moura Madari Beata Emoke Carvalho Márcia Thaís de Melo Assis Paula Camylla Ramos Silveira André Luiz Rodrigues de Leles Lima Mateus Wruck Flávio Jesus Medeiros João Carlos Machado Pedro Luiz Oliveira de Almeida 《Regional Environmental Change》2018,18(1):105-116
Regional Environmental Change - Integrated farming systems (IS) are one of the main strategies of the Brazilian government to reduce or compensate for carbon emissions from agriculture with... 相似文献
36.
Giovanna Moura Calazans Carolina Cristiane Pinto Elizângela Pinheiro da Costa Anna Flávia Perini Sílvia Corrêa Oliveira 《Environmental monitoring and assessment》2018,190(12):726
Surface water quality monitoring networks are usually deployed and rarely re-evaluated with regard to their effectiveness. In this sense, this work sought to evaluate and to guide optimization projects for the water quality monitoring network of the Velhas river basin, using multivariate statistical methods. The cluster, principal components, and factorial analyses, associated with non-parametric tests and the analysis of violation to the standards set recommended by legislation, identified the most relevant water quality parameters and monitoring sites, and evaluated the sampling frequency. Thermotolerant coliforms, total arsenic, and total phosphorus were considered the most relevant parameters for characterization of water quality in the river basin. The monitoring sites BV156, BV141, BV142, BV150, BV137, and BV153 were considered priorities for maintenance of the network. The multivariate statistical analysis showed the importance of a monthly sampling frequency, specifically the parameters considered most important. 相似文献
37.
Bárbara Baêsso Moura Sílvia Ribeiro de Souza Edenise Segala Alves 《Environmental science and pollution research international》2014,21(6):4220-4227
Ozone (O3) is a toxic secondary pollutant able to cause an intense oxidative stress that induces visual symptoms on sensitive plant species. Controlled fumigation experiment was conducted with the aim to verify the O3 sensibility of three tropical species: Piptadenia gonoachanta (Mart.) Macbr. (Fabaceae), Astronium graveolens Jacq. (Anacardiaceae), and Croton floribundus Spreng. (Euphorbiaceae). The microscopical features involved in the oxidative stress were recognized based on specific histochemical analysis. The three species showed visual symptoms, characterized as necrosis and stippling between the veins, mostly visible on the adaxial leaf surface. All the studied species presented hypersensitive-like response (HR-like), and peroxide hydrogen accumulation (H2O2) followed by cell death and proanthocyanidin oxidation in P. gonoachanta and A. graveolens. In P. gonoachanta, a decrease in chlorophyll autofluorescence occurred on symptomatic tissues, and in A. graveolens and C. floribundus, a polyphenol compound accumulation occurred. The responses of Brazilian native species were similar to those described for sensitive species from temperate climate, and microscopical markers may be useful for the detection of ozone symptoms in future studies in the field. 相似文献
38.
Teresa Moura Carla Nunes Narcisa Bandarra Leonel Serrano Gordo Ivone Figueiredo 《Marine Biology》2011,158(2):401-412
The embryonic development and the level of dependency of the embryos from the maternal organism were investigated for Centroscymnus coelolepis. During the development, there is a 22–32% loss of organic matter and gains of 95–122% and 29–46% on moisture and inorganic
matter, respectively. Only 28–48% of the initial yolk energy is conserved in embryos, being the remaining used in catabolism.
In late pregnancy, the epithelium thickness of uterine villi decreases and vascularity increases. Results suggest that only
water and minerals are transferred from the mother to the embryos. Monounsaturated fatty acids are the main type of fatty
acids representing 48% of the total yolk fatty acid content, followed by polyunsaturated (30%) and saturated fatty acids (18–21%). 相似文献
39.
Tania Basegio Andréa Machado Andréa Moura Bernardes Carlos Pérez Bergmann 《Waste management & research》2006,24(6):537-544
In this study, the viability of using electrostatic painting residues--paint sludge--as a raw material to the red clay industry was investigated. Red clay-based ceramic masses containing electrostatic paint residues were formulated during the study. The clays were obtained from the Rio do Rastro deposit, in Gravataí, and were of the standard formulation used in industry. Different ceramic mass formulations with additions of 0.5, 1.0, 2.5 and 5.0 wt.% electrostatic painting residue in addition to a formulation with no residue addition (standard formulation), were evaluated. The samples were uniaxially pressed in a double-effect press and were fired in an electric oven at 900, 950 and 1000 degrees C. The firing at constant temperature lasted 8 h, and heating rate was 150 K h(-1). After processing the samples were characterized in terms of their physical and mechanical properties. Environmental compatibility was also considered by the evaluation of gaseous emissions and leaching and solubilization tests according to the Brazilian standards NBR 10.005 and NBR 10.006, respectively. The results showed that it was possible to produce ceramic materials containing electrostatic painting residues within their formulations. 相似文献
40.