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Abstract In this work, magnetic polymeric microspheres were prepared through the copolymerization of styrene and divinylbenzene in the presence of magnetite synthesized in our laboratory. The effects of magnetite modification with oleic acid, stirring speed, initiator concentration and stabilizer concentration on the particles’ properties were studied. The magnetic microspheres were characterized according to morphology, thermal stability, particle size and distribution, and magnetic properties. The microspheres had spherical shape, micrometric size and superparamagnetic properties. Particle size was mainly affected by stirring speed, while particle size dispersion was strongly affected by initiator and stabilizer concentrations. The saturation magnetization of the microspheres was similar to the values reported in the literature for microspheres with the same content of magnetic material. The modification with oleic acid promoted the incorporation of magnetic material.

O trabalho que apresentamos tem por objetivo analisar as possíveis tendências tradutórias da estrutura “bu (mei) + verbo” do chinês para o português. Em chinês moderno, os dois advérbios negativos “bu” e “mei” têm uma relação muito estreita com o aspeto dos verbos pospostos; ou seja, como os verbos chineses não têm conjugações, estes dois advérbios negativos servem para associar os verbos aos aspetos diferentes, com o advérbio “bu” a ligar o verbo posposto ao aspeto imperfeito e o advérbio “mei”, ao aspeto perfeito. Para verificar se as suas traduções portuguesas também obedecem a esta relação, recorremos a um corpus paralelo chinês-português, criado com base numa obra de Mo Yan, escritor chinês, e a sua tradução portuguesa por Amilton Reis. Por meio da análise dos exemplos bilíngues extraídos, procuramos analisar e discutir as possíveis tendências de tradução da estrutura “bu (mei) + verbo” para o português e, com isso, esperamos ajudar os tradutores em formação a compreenderem e a dominarem as possíveis orientações tradutivas da dita estrutura.

ABSTRACT: Biosynthesis is the only source of potato starch which is an important raw material for food processing, modified starch and biomass energy. However, it is not clear about the evolution of starch synthesis with tuber development in potato. The present study evaluated the differences of starch synthesis and gelatinization properties of potato tubers with different starch content. Relative to cultivars of medium and low starch content, cultivars of high starch content showed significantly higher SBEII gene expression, AGPase and SSS enzyme activity, and total starch content after middle stage of starch accumulation, and had smaller average starch granule size during whole process of tuber development, and had higher pasting temperature before late stages of tuber growth, and had lower pasting temperature after middle stage of starch accumulation. Path analysis showed that, after middle stage of starch accumulation, effects on starch gelatinization of cultivars with high, medium and low starch content represented starch synthesis enzyme activity > starch accumulation > starch granule distribution > starch synthesis enzyme gene expression, starch synthesis enzyme gene expression > starch synthesis enzyme activity > starch accumulation > starch granule distribution, starch synthesis enzyme gene expression > starch granule distribution > starch synthesis enzyme activity > starch accumulation, respectively. In the study, phases existed in the starch biosynthesis of potato tuber, and the starch quality and its formation process were different among varieties with different starch content. The findings might contribute to starch application and potato industries.

O trabalho que apresentamos tem por objetivo analisar as alternativas de conversão da partícula aspetual chinesa guo para o português. Em chinês, a partícula aspetual guo fica depois dos verbos, expressando o acontecimento das ações no passado e indicando o aspeto experiencial. Como em português não existe tal classe de palavra, a função desempenhada por esta partícula aspetual chinesa, aquando da tradução, é transmitida em português por via de diferentes recursos sintáticos e lexicais. Para verificar as suas alternativas de conversão para o português, recorremos a um corpus paralelo constituído por textos chineses e portugueses, sendo o chinês língua-fonte e o português língua-alvo. Mediante a análise dos exemplos encontrados no corpus em relação ao uso da partícula aspetual guo, procuramos discutir as possíveis orientações de conversão desta partícula aspetual para o português e, com isso, esperamos poder ajudar os tradutores a compreenderem e a dominarem essas possíveis conversões.

Este trabalho visa explicar a importância do valor contextual na tradução entre chinês e português, através da análise de casos verificados na prática de docência e tradução.

O trabalho que apresentamos tem por objetivo analisar as ocorrências de conversão da partícula aspetual chinesa guo para o português. Em chinês, a partícula aspetual guo fica depois dos verbos, expressando o acontecimento das ações no passado e indicando o aspeto experiencial. Como em português não existe tal categoria de palavra, a função desempenhada por esta partícula aspetual chinesa, aquando da tradução, é transmitida em português por via de diferentes recursos sintáticos e lexicais. Para verificar as suas tendências de conversão para o português, recorremos a um corpus paralelo constituído por textos chineses e portugueses, sendo o chinês língua-fonte e o português língua-alvo. Mediante a análise dos exemplos encontrados no corpus em relação ao uso da partícula aspetual guo, procuramos discutir as possíveis orientações de conversão desta partícula aspetual para o português e, com isso, esperamos poder ajudar os tradutores a compreenderem e a dominarem essas possíveis conversões.

Abstract: Pellagra is a nutritional disease caused by a deficiency of niacin. It may lead to death if not identified and treated timely. We review the literature and report a female patient presented with clinical features of pellagra as a complication of Crohn's disease.

Abstract Polymeric membranes were developed using a SPEEK (sulfonated poly(ether ether ketone)) polymer matrix, containing titanium oxide (TiO2) (incorporated by sol-gel method). SPEEK with different sulfonation degrees (SD): 63% and 50% were used. The influence of sulfonation degree on membrane properties was investigated. The thermal analysis (TGA and DTGA) and X-ray diffraction (XRD) were carried out to characterize the membranes and electrochemical impedance spectroscopy (EIS) was carried out to evaluate the proton conductivity of the membranes. The proton conductivities in water were of 3.25 to 37.08 mS.cm-1. Experimental data of impedance spectroscopy were analyzed with equivalent circuits using the Zview software, and the results showed that, the best fitted was at 80 °C.

Magnetic composites have a wide range of potential technological applications; however the evaluation of this material for extraction of phenolic compounds has not been sufficiently studied. Due to its high toxicity and solubility the removal of phenolic compounds from the aquatic environments has critical importance. In this work polymeric composites were prepared by anchoring Ni and Co particles on sulfonatedpoly(styrene-co-divinylbenzene) PS-DVB. The PS-DVB beads were synthesized by suspension polymerization and reacted with acetyl sulfate, aiming to obtain sulfonated copolymers. All materials were capable of removing phenol from aqueous solutions. The phenol adsorption kinetics was influenced by the polymer porosity and swelling capacity in water. The composite derivative of the more porous copolymer impregnated with nickel (C1SNi) was the most efficient in phenol removal, with the sorption equilibrium being established more rapidly than for the other composites. The pseudo second-order model was more adequate to describe the phenol adsorption process for the composite C1SNi. The Langmuir model describes successfully the phenol removal by this composite.

Com o objetivo de verificar a possibilidade do uso dos mingaus desidratados elaborados com canjiquinha e soja em diferentes proporções (100:0; 90:10; 80:20; 70:30; 60:40 e 50:50%), em produtos alimentícios, foram estudadas a solubilidade e as propriedades emulsificantes das misturas. Os processos utilizados para a obtenção dos mingaus foram: decorticagem dos grãos de soja, branqueamento, desintegração e homogeneização da canjiquinha e soja, bem como secagem por atomização. O aumento das proporções de soja (0 a 50%) causou aumento do N solúvel em água, do índice de solubilidade de N, da proteína dispersível em água, do índice de dispersibilidade de proteína, e provocou uma ligeira diminuição da atividade emulsificante e da estabilidade de emulsão. A atividade residual do inibidor de tripsina não foi detectada nos mingaus desidratados estudados.

Abstract Low cost UV-Ozone reactor using a high pressure mercury vapor lamp of 80 watts without outer bulb showed good results for treatment of ITO films used as anode electrode in the assembly of P-OLED (polymer-organic light emitting diode) devices. This study revealed 20 minutes as effective treatment time and it was verified also that the effect of UV-Ozone treatment loses its efficiency as the elapsed time increases. It was analyzed with measurements of contact angle using a droplet of PEDOT:PSS polymer. P-OLEDs devices were mounted with architecture: ITO/PEDOT:PSS/PVK/Alq3/Al. The PVK polymer was diluted in organic solvent of 1,2,4-trichlorobenzene with concentrations of: 5, 10, 20 and 30 mg/mL. Results revealed better performance of P-OLED devices for concentration of 5 mg/mL resulting in lower threshold voltage, elevation of electrical current and similar diode curve.

Background and Objectives: Patients' knowledge deficits concerning anesthesia and the anesthesiologist's role in their care may contribute to anxiety. The objective of this study was to develop anesthesia patient education materials that would help improve patient's satisfaction regarding their knowledge of the perioperative process and decrease anxiety in a community hospital with a large Spanish-speaking population., Methods: A survey (Survey A) in English and Spanish was administered to all adult anesthesiology preoperative clinic patients during a 4-week period. The data were analyzed and then a patient education handout was developed in both English and Spanish to assist with our patients' major concerns. A second survey (Survey B) was administered that was completed after the education handout had been put into use at the clinic. The survey asked for basic demographic information and included questions on satisfaction with regard to understanding of anesthesia as well as worries regarding surgery and pain., Results: In the patients who received the handout, statistically significant improvement was found in the questions that asked about satisfaction with regard to understanding of type of anesthesia, options for pain control, what patients are supposed to do on the day of surgery, and the amount of information given with regard to anesthetic plan. There was no difference in anxiety related to surgery in patients who received the educational handout compared to those patients who did not., Conclusions: Patient education handouts improved patient's satisfaction regarding their knowledge of the perioperative process but did not reduce anxiety related to surgery., (Copyright © 2013 Sociedade Brasileira de Anestesiologia. Publicado por Elsevier Editora Ltda. All rights reserved.)

Background: Long-term outcomes of drug-eluting stents (DES) versus bare-metal stents (BMS) in patients with ST-segment elevation myocardial infarction (STEMI) remain uncertain., Objective: To investigate long-term outcomes of drug-eluting stents (DES) versus bare-metal stents (BMS) in patients with ST-segment elevation myocardial infarction (STEMI)., Methods: We performed search of MEDLINE, EMBASE, the Cochrane library, and ISI Web of Science (until February 2013) for randomized trials comparing more than 12-month efficacy or safety of DES with BMS in patients with STEMI. Pooled estimate was presented with risk ratio (RR) and its 95% confidence interval (CI) using random-effects model., Results: Ten trials with 7,592 participants with STEMI were included. The overall results showed that there was no significant difference in the incidence of all-cause death and definite/probable stent thrombosis between DES and BMS at long-term follow-up. Patients receiving DES implantation appeared to have a lower 1-year incidence of recurrent myocardial infarction than those receiving BMS (RR = 0.75, 95% CI 0.56 to 1.00, p= 0.05). Moreover, the risk of target vessel revascularization (TVR) after receiving DES was consistently lowered during long-term observation (all p < 0.01). In subgroup analysis, the use of everolimus-eluting stents (EES) was associated with reduced risk of stent thrombosis in STEMI patients (RR = 0.37, p=0.02)., Conclusions: DES did not increase the risk of stent thrombosis in patients with STEMI compared with BMS. Moreover, the use of DES did lower long-term risk of repeat revascularization and might decrease the occurrence of reinfarction.