Decrease Of Environmental Impact
Mostrando 13-24 de 37 artigos, teses e dissertações.
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13. Thermal analysis evaluation of the reactivity of coal mixtures for injection in the blast furnace
Pulverized Coal Injection (PCI) is an important standard technology replacing coke partially by pulverized coal into the blast furnace that allows a significant reduction of hot metal costs and environmental impact, contributing to a decrease of coke requirements for ironmaking. Coals typically used in this process in Brazil are, at current time, exclusively
Publicado em: 2010
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14. Superfosfato triplo, lama vermelha e zeólitas para remediação de metais pesados em solo contaminado / Remediation of contaminated soil with heavy metal using triple superphosphate, red mud and zeolites
Due to the heavy metal persistence in soils, the contamination by these elements is considered permanent and might result in great impact causing a degradation of the chemical and biological properties of the soil. Stabilization techniques have been used as an efficient tool for the remediation of soils that are contaminated by heavy metals, and they show al
Publicado em: 2010
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15. O impacto da reserva legal e da área de preservação permanente sobre pequenas propriedades rurais : um estudo na agricultura ecológica de Antônio Prado/RS
Permanent Preservation Areas (APPs) and the Legal Reservation (RL) were established by law as mitigates alternatives of the impacts on the anthropotic action, functioning as regulators of the water flow, sediments and nutritious, forming ecosystems stabilized on the rivers bank, lakes and springs, acting in the decrease and strain of the superficial drainage
Publicado em: 2009
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16. Condições ambientais envolvidas na saúde e na doença da população de Muzambinho - Minas Gerais sob a ótica de atores sociais
Although the term environment is widely known and comprehends interactions among all nature components, including human beings, the complexity of the interactions may hinder people from recognizing that they are a part of the environment. Many ignore that they are responsible for the environment and can influence and contribute to decrease its problems, whic
Publicado em: 2009
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17. Concentration of bauxite via reverse froth flotation. / Concentração de bauxita por flotação reversa.
O presente trabalho propõe a concentração da bauxita presente em um rejeito fino gerado na usina de beneficiamento da Companhia Brasileira de Alumínio (CBA), agora denominada Votorantim Metais Alumínio, em Itamarati de Minas (MG), através da flotação reversa da sílica, sob a forma de quartzo. Como os minerais de ferro e titânio acompanham a bauxita
Publicado em: 2009
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18. Cordicoterapia oral e inflamatória para o tratamento de sibilancia na infância : uso e abuso
The systemic and topical therapy with corticosteroids for asthma treatment is a consensual point in the literature and an important topic in the guidelines on disorder management. Currently, it is the medication with the best results in asthma control, with quick symptoms reduction, significant improvement in inflammation and pulmonary function. Moreover, it
Publicado em: 2009
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19. Application of peracetic acid in the eucalyptus pulp bleaching and its quality impact / Aplicação do ácido peracético no branqueamento da polpa de eucalipto e o impacto na sua qualidade
In the productive sector of cellulose the demands on the quality of the final product are too great, once the market is very competitive and globalized. The main objectives of this paper were the establishment of appropriate conditions to implement the peracetic acid as the last stage of elemental chlorine-free (ECF) bleaching sequence and assessing the impa
Publicado em: 2008
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20. Effect of the application of organic compost on the process of crust formation and the recuperation of degraded soils by water erosion / Efeito da aplicação de composto orgânico sobre o processo de encrostamento e a recuperação de solos degradados pela erosão hídrica
The generation of organic waste along with soil erosion are two major environmental problems worldwide. They are responsible for the reduction of agricultural productivity and high environmental impacts. The objective of this dissertation is the use of organic waste generated in agriculture, in the form of organic compost, for the recovery of degraded areas
Publicado em: 2008
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21. Performance and carcass characteristics of broiler chickens with different growth potential and submitted to heat stress
In order to evaluate the effects of broiler genotype and of heat exposure on performance, carcass characteristics, and protein and fat accretion, six hundred one-day-old male broilers were randomly assigned in a 2 x 3 factorial arrangement, according to the following factors: genetic group (selected and non-selected broilers) and pair-feeding scheme (Ad32 -
Revista Brasileira de Ciência Avícola. Publicado em: 2007-09
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22. Levels of 17-methyltestosterone in different temperatures on sex inversion of Nile tilapias Oreochromis niloticus. / NÃveis de 17-α metiltestosterona em diferentes temperaturas na inversÃo sexual de tilÃpias- Oreochronis niloticus
Due to sexual precocity and higher growth rate of Nile tilapia males in relation to females, several techniques on sex inversion, more specifically the masculinization or production of mono-sex populations, have been praised. Among the techniques used for sex inversion in tilapias, the most disseminated around the world and Brazil is the hormone usage incorp
Publicado em: 2007
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23. Thermal analysis evaluation of the reactivity of coal mixtures for injection in the blast furnace
Pulverized Coal Injection (PCI) is an important standard technology replacing coke partially by pulverized coal into the blast furnace that allows a significant reduction of hot metal costs and environmental impact, contributing to a decrease of coke requirements for ironmaking. Coals typically used in this process in Brazil are, at current time, exclusively
Materials Research. Publicado em: 2006-03
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24. ENVIRONMENTAL PASSIVE IN RURAL PROPRIETIES: FLOWERS ISLAND - POA RS / PASSIVO AMBIENTAL EM PROPRIEDADES RURAIS: ILHA DAS FLORES PORTO ALEGRE RS
The acceleration of the global economy and shifting demographic changes has caused an uncontrolled exploration of the worlds natural renewable and non-renewable resources. Not only have the levels of these resources decreased but so has the quality. In addition to these changes, the future development of natural ecosystems could also be compromised as they a
Publicado em: 2006