Extraction Economy
Mostrando 1-12 de 32 artigos, teses e dissertações.
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1. Flexible pavement with mining waste proposal - execution and analysis of an experimental section
Abstract The extraction of iron ore has a fundamental role in the Brazilian economy. However, such activity generates considerable volumes of waste whose disposal, even if regulated and licensed, has a significant environmental impact. The worldwide concern for sustainable practices along with the urgency for measures to mitigate environmental damage, justif
REM - International Engineering Journal. Publicado em: 2022
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2. CLOROFILA EXTRAÍDA DE RESÍDUO INDUSTRIAL DA ERVA-MATE (Ilex paraguaiensis) UMA POSSIBILIDADE DE ECONOMIA CIRCULAR
Chlorophyll is the most abundant green pigment on the planet, it is unstable and decomposes naturally. Mate-herb is a traditional native plant in the southern region of South America, and its tea is part of the local culture and extractive agriculture. The mate-herb industry generates as a by-product a resinous material rich in chlorophyll whose use is propo
Química Nova. Publicado em: 2022
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3. Using Polymer Reaction Engineering Principles to Help the Environment: The Case of the Canadian Oil Sands Tailings
The Canadian oil sands reserves are an important national resource with a large impact on the Canadian economy. Unfortunately, oil sands extraction processes generate toxic by-products called mature fine tailings that need to be stored in disposal ponds for a very long time before the land can be reclaimed. This serious environmental liability needs to be ad
J. Braz. Chem. Soc.. Publicado em: 2019-03
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4. Mule Drivers in Nineteenth-Century Lebanon: from local social history towards Global History
Abstract: This article makes the case for a project in the making: a study of the social transformation of the countryside as it joins the global market over the long nineteenth century, told as a collective biography of the mule drivers of Ottoman Lebanon - those obscure peasants who, owning one or a few mules, made their livelihood in the transport of good
Almanack. Publicado em: 2016-12
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5. Fatos e tendências da biocatálise
Brazil is renowned for its biodiversity; however, its economy is based on exotic plants, extraction and unsustainable use of natural resources. This issue was addressed in a recent QN review entitled "Chemistry without Borders." In order to explore the potential of Brazilian biodiversity fully, sustainable development is required in key technological areas,
Quím. Nova. Publicado em: 2013
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6. Elaboração de indicadores bibliométricos a partir de patentes de nanotecnologia
The need to assign values to consumer and globalization have created a new format in the economy. These phenomena have increased investments in technology until the crisis of 1970 that generated a reduction in economic growth and consequently reduction in research funding. This context created resources that could gauge the areas that lacked development. One
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/02/2012
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7. Los atolladeros de la economía latinoamericana
The aggravation of the global crisis stresses the limitations of the Latin American economy to restrain the turbulence. The huge reserves ended up rescuing European bankers because there was no improvement in the common currency. The exporting extraction prevents the repetition of the Asian manufacturing development, and it strengthens the transnational comp
Serv. Soc. Soc.. Publicado em: 2012-12
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8. ProspecÃÃo de proteÃnas envolvidas no amadurecimento pÃs-colheita da graviola (Annona muricata L.) / Prospecting for proteins involved in post-harvest ripening of soursop (Annona muricata L.)
The soursop (Annona muricata L.) fruit is widely used in food, because it provides vitamins, carbohydrates, proteins, lipids and other molecules for human nutrition. In recent years, soursop (exotic tropical fruit) has had a prominent position in the Brazilian economy, especially for northeastern states such as, Ceara, Alagoas, Bahia and Pernambuco. The high
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/08/2011
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9. ESTUDO COMPARATIVO ENTRE EXTRAÇÃO SOXHLET E ULTRASOM PARA DETERMINAÇÃO DE HIDROCARBONETOS POLICÍCLICOS AROMÁTICOS EM SEDIMENTOS DO ESTUÁRIO DO RIO SERGIPE POR CROMATOGRAFIA A GÁS ACOPLADA A ESPECTROMETRIA DE MASSAS. / COMPARATIVE STUDY OF EXTRACTION SOXHLET AND ULTRASOUND DETERMINATION FOR OIL POLYCYCLIC AROMATIC SEDIMENTS SERGIPE RIVER ESTUARY BY GAS CHROMATOGRAPHY MASS SPECTROMETRY ATTACHED.
Polycyclic aromatic hydrocarbons (PAHs) are compounds that can be found in environmental compartments such as atmosphere, soil, sediment and water. Throughout bioaccumulation, they can also be incorporated into vegetables and animals tissues. They are mainly originated from anthropogenic sources such as fossil fuels and biomass burnings. Due they potential t
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 26/08/2011
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10. Capital humano, oportunidades de trabalho e incentivos públicos: motivações e decisões da família quanto ao investimento em ensino superior / Human capital, job opportunities and public incentives: family motivations and decisions regarding investment in higher education
The research presented in this dissertation consisted of a study with theoretical basis in the human capital theory, whereby the higher the educational level of an individual, the higher will be his or her salary. However, in Brazil, where a significant part of the population is classified as poor, there are less public assets for investment in human capital
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 08/04/2011
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11. Influence on olive leaves (Olea Europaea, var. Serrana) antioxidant extraction kinetics of ultrasound assisted drying.
The olive crop has a great importance in the economy of Spain. Every year during the pruning of the olive trees a significant quantity of leaves are cut and discarded. It is known that these leaves constitute a source of antioxidant compounds and its processing would provide an added value to this raw material. Antioxidant compounds may be damaged when dryin
Defect and Diffusion Forum. Publicado em: 2011
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12. Remoção parcial de tecido cariado em lesões de cárie profundas de dentes permanentes = Partial removal of carious dentine in deep caries lesion in the permanent dentition / Partial removal of carious dentine in deep caries lesion in the permanent dentition
The partial removal of carious dentine was studied by means of a literature review and a multicenter randomized controlled clinical trial. The clinical trial compared the effectiveness of an alternative treatment for deep caries lesions and the stepwise excavation in Public Health Services in Brazil. The treatment consists of partial removal of carious denti
Publicado em: 2010