Sulphite
Mostrando 1-12 de 28 artigos, teses e dissertações.
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1. Strategies for corrosion inhibition of slurry pipelines prior to commissioning
Abstract A practice used to prevent corrosion in buried slurry pipelines is the hibernation of pipelines with an aqueous solution containing corrosion inhibitors before beginning the mining operation. The aim of this work is to evaluate the corrosion resistance of API 5L X70 steel used in the slurry pipelines in hibernation solution containing sodium sulphit
Rem: Rev. Esc. Minas. Publicado em: 2016-06
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2. Photochemical and Electrochemical Study of the Release of Nitric Oxide from [Ru(bpy)2L(NO)](PF6)n Complexes (L = Imidazole, 1-Methylimidazole, Sulfite and Thiourea), Toward the Development of Therapeutic Photodynamic Agents
The development of NO photoreleaser compounds has important potential applications on medicine, particularly on preventing topic infections and controlling cancers. Due to these expectations, the photochemical release of nitric oxide from complexes of [Ru(bpy)2LX]n+, where L = imidazole, 1-methylimidazole, sulphite and thiourea and X = NO+ and NO2− was inv
J. Braz. Chem. Soc.. Publicado em: 2015-09
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3. Evaluation of stress tolerance and fermentative behavior of indigenous Saccharomyces cerevisiae
Sixty six indigenous Saccharomyces cerevisiae strains were evaluated in stressful conditions (temperature, osmolarity, sulphite and ethanol tolerance) and also ability to flocculate. Eighteen strains showed tolerant characteristics to these stressful conditions, growing at 42 ºC, in 0.04% sulphite, 1 mol L-1 NaCl and 12% ethanol. No flocculent characteristi
Braz. J. Microbiol.. Publicado em: 15/11/2013
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4. Microbial spoilage of portuguese chouriço along shelf life period
Microbial flora of portuguese chouriço (Alentejano (A) and Ribatejano (R)) with abnormal sensorial characteristics along shelf life was studied. Mesophilic anaerobic bacteria, enterococci, mesophilic sporeformers, coliforms, coagulase-positive staphylococci, sulphite reducing clostridia, Clostridium perfringens, moulds and yeasts were the most representativ
Braz. J. Microbiol.. Publicado em: 2013
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5. Caracterização anatômica, química e físico-mecânica da madeira de paricá (Schizolobium amazonicum) para produção de energia e polpa celulósica / Anatomic, chemical and physico-mechanical characterization of paricá (Schizolobium amazonicum) wood for energy and cellulosic pulp production
O objetivo desse trabalho foi avaliar a influência da idade e da posição no tronco (radial e longitudinal) nas propriedades anatômicas, químicas, físicas e mecânicas na madeira de Schizolobium amazonicum (paricá) e na produção de polpa neutral sulphite semichemical pulping (NSSC) em comparação com a madeira de Eucalyptus grandis. A madeira de par
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 12/03/2010
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6. Sodium lignosulphonate as agent of modification of lignocellulosic fiber surface and formulation of phenolic thermoset / Lignosulfonato de sódio como agente de modificação da superfície de fibras lignocelulósicas e da formulação de termorrígido fenólico
Due to the great current interest in biocomposites because of both the use of lignocellulosic fibers as reinforcers of polymer matrices and the production of matrices prepared from renewable raw material, this study has sought to improve the properties of phenolic thermosets using sodium lignosulphonate as a macromonomer, and the insertion of sisal fibers, e
Publicado em: 2010
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7. Sistemas de análises químicas em fluxo explorando mecanismos de re-alimentação, calibração multivariada e outras abordagens para melhoria em desempenho / Flow systems exploiting feed-back mechanisms, multivariate calibration and other strategies for improving the analytical performance
Studies focusing on performance of intelligent analytical flow systems, association with multivariate calibration or use of nanocrystals as sensitizers were carried out. Moreover, improvements related to modifications in flow pattern were evaluated with emphasis to in-line dialysis. To this end, a strategy for implementing simultaneous determinations of iron
Publicado em: 2010
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8. Influência conjunta do pH, temperatura e concentração de sulfito na fermentação alcoólica de mostos de sacarose
This work presents as objective to study the simultaneous influence of pH, temperature and sulphite concentration on situations comprising stress situations for the yeast on the alcoholic fermentation by the use of a central composite design (CCD). The yeast Saccharomyces cerevisiae Y-940 was used and the experiments were carried out in a temperature and agi
Publicado em: 2009
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9. Qualidade do camarão da espécie Xyphopenaeus kroyeri mediante a ação dos agentes antimelanóticos / Quality of shrimp Xyphopenaeus kroyeri submitted to antimelanotic agents
Sea shrimp captured in the Brazilian coast represents an important segment of the seafood particularly due to the market value. Being a highly perishable food, it requests special cares for commercialization, conservation and industrialization. The control of the quality begins as soon as post-capture in the vessel. The immediate operations accomplished afte
Publicado em: 2008
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10. Metabolismo do dibenzotiofeno por Cunninghamella elegans associados aos estudos morfolÃgicos e ultraestruturais
Considering the biotechnological potential of Cunninghamella elegans related to recalcitrant compounds in the environment the aim of this work was to evaluate the dibenzothiophene (DBT) degradation in association with morphological and ultrastructral aspects. Samples treated with DBT were submitted to gas chromatography coupled to mass spectrometry - GC-MS.
Publicado em: 2008
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11. Avaliação Físico-Química, Microbiológica e Sensorial do Presunto de Peru Submetido a Tecnologia de Alta Pressão Hidrostática. / Evaluation Physical Chemistry, Microbiological and the Sensory of ham turkey Submitted Technology of the High Hydrostatic Pressure.
The high hydrostatic pressure (HHP) is a technology that has advantages over conventional relationship the technologies that use heat and works with high pressure (100 MPa to 900MPa), maintains the sensory characteristics of food and close to the original, ensures a food safe from microbiological point of view and with increasing lifetime. In this study, wer
Publicado em: 2008
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12. Mecanismo de defesa e recuperação da fotossintese em Centrolobium tomentosum sob condições de estresse induzido por SO2 / Mechanism of defense and recovery of photosynthesis in Centrolobium tomentosum under conditions of stress induced by SO2
Large quantities of gaseous pollutants emited by urban-industrial areas emit contribute to the degradation of ecosystems with subsequent declines in vegetation. The photosynthesis is one of the first processes altered by the action of these pollutants and sulphur dioxide (SO2), as one of the most common and harmful air pollutants, drastically affect the phot
Publicado em: 2008