Dioxide Carbon Recovery
Mostrando 1-12 de 48 artigos, teses e dissertações.
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1. Limited cardiopulmonary capacity in patients with liver cirrhosis when compared to healthy subjects
SUMMARY OBJECTIVES: The present study compared cardiorespiratory capacity between cirrhotic patients and healthy subjects. METHODS: Nineteen cirrhotic patients and 19 healthy subjects, paired by age and gender, participated in the study. Volunteers performed an incremental cardiopulmonary test with a ramp protocol, a ventilatory and metabolic variables wer
Rev. Assoc. Med. Bras.. Publicado em: 2021-01
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2. Feasibility of non-intubated anesthesia and regional block for thoracoscopic surgery under spontaneous respiration: a prospective cohort study
Data about the feasibility and safety of thoracoscopic surgery under non-intubated anesthesia and regional block are limited. In this prospective study, 57 consecutive patients scheduled for thoracoscopic surgery were enrolled. Patients were sedated with dexmedetomidine and anesthetized with propofol and remifentanil. Ropivacaine was used for intercostal ner
Braz J Med Biol Res. Publicado em: 2020-01
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3. Deficiência de macronutrientes em Cariniana estrellensis (Raddi) Kintze
Resumo O conhecimento dos efeitos da nutrição mineral sobre a fisiologia vegetal de espécies nativas é um importante auxílio para que se obtenha o sucesso desejado quando estas são usadas no reflorestamento ou na recuperação de áreas degradadas. A presente pesquisa avaliou as consequências da deficiência de macronutrientes em Cariniana estrellensi
Ciênc. Florest.. Publicado em: 30/09/2019
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4. PRODUCTION AND CHARACTERIZATION OF PRECIPITATED SILICA FROM PALM OIL MILL FLY ASH USING CO2 IMPREGNATION AND MECHANICAL FRAGMENTATION
ABSTRACT In this research, sol-gel precipitation using CO2 impregnation and mechanical fragmentation method was applied to produce precipitated silica from Palm Oil Mill Fly Ash (POMFA). Carbon dioxide (CO2) was used in order to reduce the cost of the process and to enable sodium hydroxide recovery. The precipitation process was done in a stirred temperature
Braz. J. Chem. Eng.. Publicado em: 15/07/2019
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5. Imobilização de lipase por encapsulação em sílica aerogel
Lipase from Burkholderia cepacia was immobilized in a silica matrix and dried in high pressure carbon dioxide media (aerogel). The protic ionic liquid (PIL) was used in the immobilization process by encapsulation. The objective of this work was to evaluate the influence of the drying technique using supercritical carbon dioxide in biocatalysts obtained throu
Quím. Nova. Publicado em: 2014-07
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6. Recuperação de CO2 em microcervejaria / Recuperação de dióxido de carbono em microcervejaria
O dióxido de carbono é muito utilizado nas cervejarias, em várias etapas do processo, como contrapressão em tanques, no envase para pressurização de barris e garrafas, na dispensa em máquinas, e em muitos outros casos. A quantidade de CO2 que uma indústria cervejeira necessita pode ser fornecida pela própria formação de CO2 da fermentação. As gr
Publicado em: 2011
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7. O Protocolo de Kyoto e o mercado de crédito de carbono: estudo de caso das emissões de gases de efeito estufa da fábrica de combustível nuclear pertencente às Indústrias Nucleares do Brasil no ano de 2008 / The Kyoto Protocol and the carbon credit market: case study of emissions of greenhouse gases from nuclear fuel factory belonging to the Nuclear Industries of Brazil in 2008
This dissertation discusses issues related to intensification of climate change by anthropogenic causes for the evolution in use of natural resources, innovations in production processes, economic, social, cultural, political and especially environmental. Approaches marketing of carbon credits through projects of Clean Development Mechanism (CDM), one of the
Publicado em: 2010
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8. Study of the isoelectric precipitation of porcine insulin in aqueous solutions with carbon dioxide / Estudo da precipitação isoeletrica da insulina suina em soluções aquosas com o dioxido de carbono
Precipitation is a technique frequently employed in downstream process for the recovery of proteins from aqueous solutions. One example of such technique is the isoelectric precipitation, which consists of the adjustment of solution pH to the value where the protein has zero net charge, the isoelectric point, pI. Commonly, mineral acids and bases are used fo
Publicado em: 2007
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9. Supercritical carbon dioxide extraction of pigments from Bixa orellana seeds (experiments and modeling)
Supercritical CO2 extraction of the pigments from Bixa orellana seeds was carried out in a flow apparatus at a pressure of 200 bar and a temperature of 40 ºC at two fluid flow rates (0.67g/min and 1.12g/min). The efficiency of the extraction was low (only about 1% of the pigment was extracted). The increase in flow rate led to a decrease in pigment recovery
Brazilian Journal of Chemical Engineering. Publicado em: 2006-06
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10. Avaliação da viabilidade da utilização do teste respirométrico de Bartha para determinar a biodegradação de hidrocarbonetos aromáticos polinucleares em solo tropical: caso do fenantreno. / Feasibility of application of Barthas respirometric method to determine biodegradation of polycyclic aromatic hydrocarbons in tropical soil: phenantrene case.
Nowadays, one of the most serious environmental problems is the contamination of soil and groundwater. In Europe, 300,000 contaminated or potentially contaminated sites have already been identified and there it is estimated that 1.5 million contaminated sites exist. In the United States of America, more than 63,000 have already been identified. In Brazil, 1,
Publicado em: 2005
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11. Extração de oleos volateis e outros compostos com CO2 supercritico : desenvolvimento de uma metodologia de aumento de escala a partir da modelagem matematica do processo e avaliação dos extratos obtidos / Extration of volateis oils and other composites with Co2 supercriticize : development of a methodology of increase of scale from the matematica modeling of the process and evaluation of gotten extracts
The recovery of extracts from vegetable raw materials with supercritical technology was studied, in order to optimize the process and quality of the products. Three plants were submitted to extraction processes with supercritical carbon dioxide: clove, spiked pepper and vetiver. The yields and compositions of the products obtained by supecritical fluid extra
Publicado em: 2005
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12. Recovery of tocopherols of the distilled one of the desodorization of the palm oil : fractionization with supercritical carbon dioxide. / Recuperação de tocoferois do destilado da desodorização do oleo de palma : fracionamento com dioxido de carbono supercritico
O óleo de palma e seus subprodutos são fontes de tocoferóis. Os tocoferóis, por sua vez , são compostos de grande importância para a indústria alimentícia, farmacêutica e cosmética. Eles agem no organismo como vitaminas lipossolúveis essenciais na nutrição humana por inibirem a formação de radicais livres e seus efeitos nocivos sobre o organis
Publicado em: 2004