Hazardous Materials
Mostrando 13-24 de 44 artigos, teses e dissertações.
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13. Pesquisa em nanotecnologia para o agronegócio: indicadores bibliométricos de produção científica entre 2001 e 2010
O agronegócio é um dos mais importantes segmentos da economia mundial e nacional. O sucesso do agronegócio brasileiro deve-se, entre outros fatores, à crescente produtividade alcançada devido à incorporação de uma série de tecnologias. Atualmente, acredita-se que a nanotecnologia tenha enorme potencial de impactar positivamente o agronegócio, o que
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/02/2012
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14. Potential use of natural red mud as pozzolan for Portland cement
Red mud, the main waste generated in aluminum and alumina production by the Bayer process, is considered hazardous due to its high pH, according to the Brazilian standard NBR 10004/2004, and worldwide generation of this waste exceeds 117 million tons/year. In this work, non-calcined red mud was used, thus requiring less energy and time and reducing costs, wh
Materials Research. Publicado em: 26/01/2011
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15. âInfluÃncia da adiÃÃo de cargas inorgÃnicas no desempenho de produtos refratÃrios obtidos a partir de borras de alumÃnioâ / âInfluence of addition of inorganic fillers on the performance of refractory products made from aluminum sludgeâ
ABSTRACT White dross is a reject generated during aluminium production. It contains several oxides that can be useful to the refractories and cement industries. However, white dross can be hazardous both to human health and the environment. In this work, white dross was evaluated as a prospective raw material for the production of refractories. For this purp
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 16/11/2010
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16. Proposta de metodologia para avaliação do risco no transporte rodoviário de produtos perigosos / Proposal of risk evaluation methodology for hazardous materials transportation
A crescente preocupação com o nível de risco associado ao transporte de materiais perigosos levou várias instituições internacionais a empenhar esforços na avaliação de risco em nível regional. Seguindo essa tendência, o objetivo deste trabalho foi analisar os mais recentes processos de análise de riscos decorrentes do transporte rodoviário de m
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 10/12/2009
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17. Un método reproducible para obtener peg biramificado monofuncional de alta pureza
PEGylation has become a widely applied technique to enhancing in vitro and in vivo stability of therapeutic proteins and to increasing materials biocompatibility. PEG branched structures have proven useful for protein and peptide modification. Furthermore, they may be better than linear structures for many purposes. This paper describes an improved procedure
Química Nova. Publicado em: 2009
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18. Adição de complexo vitamínico em duas bioceramicas e seu efeito na regeneração óssea / BONE REGENERATION EFFECT AFTER THE ADDITION OF A VITAMIN COMPLEX IN TWO BIOCERAMICS
One of the goals of the Biomaterials research is the development of devices that help bone regenaration. Two synthetic ceramics has been widely used with that purpose: Hidroxyapatite (HAp) and Beta tricalcium phosphate (b-TCP). In many situations it is desirable that the resorption rate of these materials by the body matches the bone growth rate. In these ca
Publicado em: 2009
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19. NEW ALTERNATIVE FOR REUSE HAZARDOUS WASTE FROM THE PRIMARY ALUMINUM PRODUCTION PROCESS (SPL): PRODUCTION OF THE OPAL GLASS AND FRITS / Nova alternativa para reaproveitamento do resíduo perigoso gerado na produção de alumínio primário (SPL): obtenção de vidros opacos e fritas.
The solid waste from deteriorated linings of cells in the aluminum metal production is called spent pot lining or SPL. Because of the presence of leachable cyanide and fluoride compounds the SPL is classified by internationals standards and the Brazilian Association of Technical Standard (ABNT) as hazardous waste. The purpose of the present work is to evalua
Publicado em: 2008
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20. GLASS AND GLASS-CERAMICS WITH HIGH METAL CONCENTRATION OF FROM INDUSTRIAL WASTES / Vidros e vitrocerâmicos com alta concentração de metais obtidos a partir de resíduos industriais
The reuse of industrial waste materials is considered as an important source of raw-materials to be employed at new products. However proper criteria is needed in order to obtain vitreous materials from industrial solid wastes like solid galvanic waste (metallurgical industry) as main raw material. Ajusting the composition silica fine powder (ceramic industr
Publicado em: 2008
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21. Experimentação em quimica : alternativas para a termoquimica no ensino medio / Experimental in chemistry : alternatives for teaching thermochemistry in the high school
Experimentation in chemistry: alternatives for teaching thermochemistry in the high school. This work supplies experimental situations for teaching thermochemistry in high school as a alternative way to present this subject in addition to theoretical base related to the subject. The work beguins with the analysis of a significant number of traditional and co
Publicado em: 2008
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22. DISTRIBUIÇÃO DE CARGAS PERIGOSAS: MODELO DE ROTEIRIZAÇÃO MULTIOBJETIVO / TRANSPORTATION OF HAZARDOUS MATERIALS: MULTIOBJECTIVE ROUTING MODEL
O transporte de materiais perigosos tem recebido atenção considerável nos últimos anos, despertando assim o interesse de pesquisadores em se aprofundar e desenvolver modelos matemáticos de roteirização que minimizem o risco associado a esta operação. O presente trabalho baseia-se em estudos focados em encontrar rotas que minimizam a distância total
Publicado em: 2008
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23. TRATAMENTO DE REVESTIMENTOS GASTOS DE CUBA ELETROLÍTICA DA INDÚSTRIA DE ALUMÍNIO / TREATMENT OF SPENT POTLINER FROM ALUMINIUM INDUSTRY
Spent Potliner (SPL) is a residue from the primary aluminium production. It is indicated as the major environmental problem in the aluminum industry. SPL is formed by two fractions: Carbonaceous and refractory. According to Brazilian Standards NBR 10004, the SPL is listed as hazardous waste (K088) because it contains high levels of cyanides (complex). The pr
Publicado em: 2007
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24. Caracteristicas da poeira do processo de fabricação de materiais ceramicos para revestimento : estudo no polo de Santa Gertrudes / Characteristics of dust from the manufacturing process of ceramic materials for tiles : study in the Santa Gertrudes complex
Dust generated in the process of manufacturing ceramic materials may be a hazardous agent to the health of workers, especially when silica polymorphs in crystal forms of ?-quartz and cristobalite are present in its composition. Occupational exposure to respirable dust of such polymorphs may lead to the onset of lung disease named silicosis and other associat
Publicado em: 2007