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Cromwell (1970): a God-sent Hero in a Time of Revolution

Three hundred and fifty years after his death Oliver Cromwell remains a highly polemical historical figure producing contradictory assessments of his deeds and beliefs. Cinema is a powerful medium which has developed a controversial relationship with history, especially with the criterion of historical accuracy. It is no wonder that, from the outset, a biopic of Cromwell would give rise to disparate judgements,...

A scholar for all seasons : homenagem a João de Almeida Flor

Este volume, da iniciativa do Centro de Estudos Anglísticos da Universidade de Lisboa e do Departamento de Estudos Anglísticos da Faculdade de Letras de Lisboa, reúne um elevado número de contributos de colegas, familiares e amigos do Professor Doutor João de Almeida Flor, e pretende testemunhar, de uma forma simbólica, o reconhecimento da sua exemplar dedicação enquanto docente, dirigente e investigador. A div...

The importance of pre-treatment of spent hydrotreating catalysts on metals reco...

This work describes a three-step pre-treatment route for processing spent commercial NiMo/Al2O3 catalysts. Extraction of soluble coke with n-hexane and/or leaching of foulant elements with oxalic acid were performed before burning insoluble coke under air. Oxidized catalysts were leached with 9 mol L-1 sulfuric acid. Iron was the only foulant element partially leached by oxalic acid. The amount of insoluble mat...

Recuperação de chumbo, mercúrio e elementos dos grupos 4 a 7 da tabela periódic...

This work shows routes to recover some elements from their laboratory wastes and broken apparatus (thermometers and densimeters). Most elements chosen present a chemical behavior in aqueous solution which is not currently studied in the ordinary experimental classes. The routes were based on the previous knowledge of the qualitative composition of the wastes treated. Wastes containing chromium were the most dif...

6-sulfatoximelatonina como preditor para eficácia de antidepressivo

Análise da percepção sobre assentos de trabalho utilizando técnicas estatística...

A busca por métodos e ferramentas que permitam avaliar e selecionar assentos para uso em determinadas situações de trabalho tem sido uma preocupação constante no campo da Ergonomia. Neste estudo, foram aplicadas técnicas multivariadas para a análise dos dados provenientes de questionários de desconforto e de satisfação, utilizados para a avaliação de assentos em um experimento realizado em um laboratório indust...

Recovery of manganese and zinc from spent Zn-C and alkaline batteries in acidic...

The anode and the internal paste of spent Zn-C and alkaline batteries were leached with 2 mol L-1 H2SO4 at 80 ºC for 2 h. Solid/liquid ratio was 1/10 (g mL-1). The leachate was treated with Na2S in order to precipitate Hg, Cd and Pb. Zn was quantitatively isolated at pH 1,5-2 by adding Na2S. Mn can be precipitated at pH close to 7. Na2S may be replaced by oxalic acid. Zn precipitated at pH around 0, whereas Mn ...

Análise de compostos sulfurados em efluentes gasosos de refinaria de petróleo

This work discusses an analytical procedure for analysis of sulfur compounds in treated petroleum refinery gaseous effluents using a sulfur chemiluminescence detector with dual plasma burner (SCD-DP). Calibration was accomplished by using standards and gaseous streams of known concentration of sulfur compounds. The response factors agree with the calibration table of ASTM standard D 5504 (2008). The detection r...

Platelet count/spleen diameter ratio: analysis of its capacity as a predictor o...

CONTEXT: Upper gastrointestinal bleeding associated to esophageal varices is the most dramatic complication of cirrhosis. It is recommended screening every cirrhotic for esophageal varices with endoscopy. OBJECTIVES: To evaluate the capacity of the platelet count/spleen diameter ratio in non-invasively predicting esophageal varices in a population of cirrhotics originated in an independent center from the one i...

Dosagem urinária de 6-sulfatoximelatonina como predição da eficácia terapêutica...

Introdução: Estudos baseados na teoria monoaminérgica da depressão tem hipotetizado que a produção de melatonina está alterada no transtorno depressivo, como consequência de distúrbios na transmissão de noradrenalina. Seguindo essa idéia, outros estudos têm encontrado que o tratamento com antidepressivos aumentaria a excreção de 6-sulfatoximelatonina (aMT6s), metabólito da melatonina e possível marcador de ativ...