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The Power of Innovation and Strategic Sustainability Positioning: A Survey of the Mining Sector in Brazil 下载免费PDF全文
Luciana Aparecida Barbieri da Rosa Clandia Maffini Gomes Jordana Marques Kneipp Ana Paula Perlin 《环境质量管理》2015,25(2):47-62
This study investigates the relationship between the power of innovation and the sustainability strategies of companies involved in the minerals extraction sector in Brazil. The study included companies associated with the Brazilian Mining Institute, and it used research surveys to gather data. Analysis of the survey data revealed that companies with highly intensive characteristics in regard to innovation and environmental activities (environmental management activities) also display offensive, or proactive, strategies for pursuing sustainability. 相似文献
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Three-dimensional data interpolation for environmental purpose: lead in contaminated soils in southern Brazil 总被引:1,自引:0,他引:1
Tales Campos Piedade Vander Freitas Melo Luiz Cláudio Paula Souza Jeferson Dieckow 《Environmental monitoring and assessment》2014,186(9):5625-5638
Monitoring of heavy metal contamination plume in soils can be helpful in establishing strategies to minimize its hazardous impacts to the environment. The objective of this study was to apply a new approach of visualization, based on tridimensional (3D) images, of pseudo-total (extracted with concentrated acids) and exchangeable (extracted with 0.5 mol L?1 Ca(NO3)2) lead (Pb) concentrations in soils of a mining and metallurgy area to determine the spatial distribution of this pollutant and to estimate the most contaminated soil volumes. Tridimensional images were obtained after interpolation of Pb concentrations of 171 soil samples (57 points × 3 depths) with regularized spline with tension in a 3D function version. The tridimensional visualization showed great potential of use in environmental studies and allowed to determine the spatial 3D distribution of Pb contamination plume in the area and to establish relationships with soil characteristics, landscape, and pollution sources. The most contaminated soil volumes (10,001 to 52,000 mg Pb kg?1) occurred near the metallurgy factory. The main contamination sources were attributed to atmospheric emissions of particulate Pb through chimneys. The large soil volume estimated to be removed to industrial landfills or co-processing evidenced the difficulties related to this practice as a remediation strategy. 相似文献
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João Marcelo de Castro e Sousa Ana Paula Peron Louridânya da Silva e Sousa Mércia de Moura Holanda Ataíde de Macedo Vieira Lima Vitor Alves de Oliveira Felipe Cavalcanti Carneiro da Silva Leonardo Henrique Guedes de Morais Lima Leomá Albuquerque Matos Sandra Maria Mendes de Moura Dantas Raí Pablo Sousa de Aguiar Muhammad Torequl Islam Ana Amélia de Carvalho Melo-Cavalcante Cláudia Costa Bonecker Horácio Ferreira Júlio Junior 《Environmental monitoring and assessment》2017,189(6):301
In general, tropical rivers have a great impact on human activities. Bioaccumulation of toxins is a worldwide problem nowadays and has been, historically, overlooked by the supervisory authorities. This study evaluated cytogenotoxic effects of Guaribas river (a Brazilian river) water during dry and rainy seasons of 2014 by using the Allium cepa test system. The toxicogenetic variables, including root growth, mitotic index, and chromosomal aberrations, were analyzed in meristematic cells of A. cepa exposed to water samples taken from the up-, within, and downstream of the city Picos (state: Piauí). The physical-chemical parameters were also analyzed to explain water quality and possible anthropogenic action. Additionally, the presence of heavy metals was also analyzed to explain water quality and possible damaging effects on eukaryotic cells. The results suggest that the river water exerted cytotoxic, mutagenic, and genotoxic effects, regardless of the seasons. In addition, Guaribas river presented physico-chemical values outside the Brazilian laws, which can be a characteristic of human pollution (domestic sewage, industrial, and local agriculture). The genetic damage was positively correlated with higher levels of heavy metals. The pollution of the Guaribas river water may link to the chemical contamination, including the action of heavy metals and their impacts on genetic instability in the aquatic ecosystem. In conclusion, necessary steps should be taken into account for further toxicogenetic studies of the Guaribas river water, as it has an influence in human health of the same region of Brazil. 相似文献
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Marcelo Benetti Correa da Silva Daniel Tregnago Pagnussat Gabriel Sperandio Milan Suélen Bebber Mariana Rezzadori Rauber Ana Paula Graciola 《环境质量管理》2017,27(2):63-70
The intent of this research is to investigate how the customers of a technological control laboratory for civil construction materials perceived the quality of the services delivered by the lab, specifically in regard to the service of concrete compression testing. The popular SERVQUAL scale, a multidimensional instrument used to capture customer expectations and perceptions, was used as a model for the application of a survey. Exploratory factor analyses were employed to evaluate customers’ perceptions and experiences of service quality in regard to the dimensions and accompanying attributes of the SERVQUAL scale. Twenty attributes, which were grouped within five dimensions (Reliability, Assurance, Tangibles, Responsiveness, and Empathy), were identified, explaining 80.417% of the variance between customer expectations and perceptions and characterizing these dimensions on a modified SERVQUAL scale. Analysis of the results allowed us to identify discrepancies in perceived service quality compared with customers’ expectations. Most of the identified gaps between expectations and perceptions resulted in negative values. 相似文献
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Pasture selection by livestock is an essential topic for rangeland management, especially in trace element-contaminated soils.
We have studied the composition (nutrients and trace elements) of a grass-based diet from soils affected by a mine spill at
different growth stages (October 2008 to May 2009). A diet based on other plants (mainly Compositae species) was also studied (May 2009) for comparison. Faeces and mane hair of horses feeding on these pastures were also analysed.
Micronutrient (Cu, Fe, Mn and Zn) and potentially toxic trace element (As, Cd, Pb, Tl) concentrations were below the maximum
tolerable levels (MTL) for horses, except for Fe (at early growth of pastures) and Cd (in the diet based on ‘other’ plants).
Values of potential ingestion of Fe by horses were higher than 10 mg kg body weight − 1 day − 1. Cadmium concentrations in some pasture samples (those composed of Compositae species) were higher than 3 mg kg − 1. Potential toxicity of such Cd levels in pastures is uncertain, since a high disparity of criteria about MTL by cattle exists
(between 0.5 and 10 mg kg − 1 diet). Nutrient concentrations were adequate for horses, which could counteract possible harmful effects derived from trace
element ingestion. The analyses of excreta and mane hair point to the low risk of toxicity derived from the consumption of
these contaminated pastures. However, the ingestion of regenerating pastures (autumnal samples) should be avoided due to the
greater risk of ingestion of contaminated soil attached to the plant material. Management of these pastures by grazing requires
periodic monitoring. Special attention should be given to Fe and particularly Cd (non-essential element) which accumulates
in animal organs, where it could provoke uncertain long-term effects. 相似文献
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Bigliardi Ana Paula Fernandes Caroline Lopes Feijo Pinto Edlaine Acosta dos Santos Marina Garcia Edariane Menestrino Baisch Paulo Roberto Martins Soares Maria Cristina Flores Muccillo-Baisch Ana Luíza da Silva Júnior Flavio Manoel Rodrigues 《Environmental science and pollution research international》2021,28(2):1409-1416
Environmental Science and Pollution Research - Coal extraction and processing generate environmental contamination, which has several negative impacts on human health. Hematological and biochemical... 相似文献