Efeitos da incorporação da ecosílica no desempenho de argamassas produzidas por activação alcalina de metacaulinos

Vol.1Este trabalho aborda os efeitos da incorporação de resíduos de pó de vidro contendo sílica amorfa para a produção de argamassas obtidas por ativação alcalina de metacaulinos. São utilizadas na preparação das soluções activadoras à base de silicato de sódio – ou de potássio – duas fontes de sílica que serão objeto de comparação: uma proveniente do processo de reciclagem do vidro originário do lixo municipal e outra, da produção de ligas metálicas de ferro-silício da indústria siderúrgica. Além destas, também são adotadas soluções activadoras produzidas a partir de silicatos de sódio e potássio, obtidos em escala industrial. Este estudo tem por objectivo a avaliação do desempenho em termos de resistência e de durabilidade das argamassas analisadas a partir de razões molares de referência. São apresentados estudos referentes ao índice de actividade dos materiais analisados cujos resultados promovem a competitividade da sílica de vidro verde moído, nomeada ecosílica, em termos técnicos e econômicos. Neste estudo sobre a produção de argamassas geopolímeras com adição de pó de vidro são discutidas as condições de preparo, cura, trabalhabilidade, redução do custo de aquisição dos materiais e a eficiência energética frente às alternativas propostas

Procedural Acceleration and Judicial Procedure in Eletronic Media: Case Study at the Court of the State of São Paulo

This article discusses the average time of trial processes in both physical and digital media, from the Brazilian State Courts of Justice, and the results obtained by the implementation of the digital judicial process in these Courts. Therefore, a literature review on digital judicial process was performed, and quantitative and qualitative analysis of time series data and information obtained from the National Council of Justice - Justice in Numbers, in the years 2009, 2010 and 2011, from the Brazilian State Courts of Justice. As a result, it was possible to verify the occurrence of very large variation between the time of the filing of cases in trial and its transit to the same class processes into courts of equal competence, in the same period. By analyzing more carefully those courts where best practices related to digital process are employed, where there is use of electronic management system of lawsuits, and a staff of clerks and magistrates well scaled with respect to work load, the results are very positive, demonstrating the procedural acceleration in digital media can be three to four times faster than in the physical media.Sociedad Argentina de Informática e Investigación Operativ

Procedural Acceleration and Judicial Procedure in Eletronic Media: Case Study at the Court of the State of São Paulo

This article discusses the average time of trial processes in both physical and digital media, from the Brazilian State Courts of Justice, and the results obtained by the implementation of the digital judicial process in these Courts. Therefore, a literature review on digital judicial process was performed, and quantitative and qualitative analysis of time series data and information obtained from the National Council of Justice - Justice in Numbers, in the years 2009, 2010 and 2011, from the Brazilian State Courts of Justice. As a result, it was possible to verify the occurrence of very large variation between the time of the filing of cases in trial and its transit to the same class processes into courts of equal competence, in the same period. By analyzing more carefully those courts where best practices related to digital process are employed, where there is use of electronic management system of lawsuits, and a staff of clerks and magistrates well scaled with respect to work load, the results are very positive, demonstrating the procedural acceleration in digital media can be three to four times faster than in the physical media.Sociedad Argentina de Informática e Investigación Operativ

Procedural Acceleration and Judicial Procedure in Eletronic Media: Case Study at the Court of the State of São Paulo

This article discusses the average time of trial processes in both physical and digital media, from the Brazilian State Courts of Justice, and the results obtained by the implementation of the digital judicial process in these Courts. Therefore, a literature review on digital judicial process was performed, and quantitative and qualitative analysis of time series data and information obtained from the National Council of Justice - Justice in Numbers, in the years 2009, 2010 and 2011, from the Brazilian State Courts of Justice. As a result, it was possible to verify the occurrence of very large variation between the time of the filing of cases in trial and its transit to the same class processes into courts of equal competence, in the same period. By analyzing more carefully those courts where best practices related to digital process are employed, where there is use of electronic management system of lawsuits, and a staff of clerks and magistrates well scaled with respect to work load, the results are very positive, demonstrating the procedural acceleration in digital media can be three to four times faster than in the physical media.Sociedad Argentina de Informática e Investigación Operativ

Repercussões do tempo operatório em pulmões de ratos idosos

A duração das operações pode representar um fator importante para uma série de complicações pós-operatórias, especialmente para os indivíduos idosos. Objetivo: estudar a repercussão nos pulmões, de operações de diferentes tempos de duração. Métodos: Vinte ratos idosos (18 meses) e 20 jovens (3 meses) foram separados aleatoriamente em grupos A e B respectivamente. Os grupos foram divididos em A1, A2, A3, A4, B1, B2, B3 and B4, com cinco ratos cada. Os animais foram anestesiados com pentobarbital (20mg/Kg) intraperitoneal. No subgrupo A1 e B1 foi feita operação com duração de 30 minutos, nos grupos A2 and B2 60 minutos, em A3 and B3 a operação foi feita em 120 minuto e os animais A4 e B4 (controle) não foram operados. O procedimento consistiu de laparotomia xifopubiana que foi aberta e fechada tantas vezes quanto necessário para atingir os tempos estipulados. Após o quinto dia pós-operatório os animais foram mortos com superdose de anestésico e biópsias de ambos os pulmões foram realizadas. Os achados histopatológicos foram transformados em escores. Resultados: os grupos de ratos jovens atingiram os escores: A1= escore 6, A2=11; A3=28; A4=5. Os ratos idosos tiveram os escores: B1=12; B2=34; B3=51 e B4=6. A análise estatística revelou diferenças significantes entre os escores dos grupos A e B. Conclusões: O tempo prolongado nas operações realizadas em ratos idosos contribuiu para o aparecimento de alterações pulmonares de modo significante. Quanto maior o tempo operatório, mais intensas e mais freqüentes as complicações pulmonare

Associations between cardiorespiratory fitness, physical activity and clustered cardiometabolic risk in children and adolescents: the HAPPY study

Clustering of cardiometabolic risk factors can occur during childhood and predisposes individuals to cardiometabolic disease. This study calculated clustered cardiometabolic risk in 100 children and adolescents aged 10-14 years (59 girls) and explored differences according to cardiorespiratory fitness (CRF) levels and time spent at different physical activity (PA) intensities. CRF was determined using a maximal cycle ergometer test, and PA was assessed using accelerometry. A cardiometabolic risk score was computed as the sum of the standardised scores for waist circumference, blood pressure, total cholesterol/high-density lipoprotein ratio, triglycerides and glucose. Differences in clustered cardiometabolic risk between fit and unfit participants, according to previously proposed health-related threshold values, and between tertiles for PA subcomponents were assessed using ANCOVA. Clustered risk was significantly lower (p < 0.001) in the fit group (mean 1.21 ± 3.42) compared to the unfit group (mean -0.74 ± 2.22), while no differences existed between tertiles for any subcomponent of PA. Conclusion These findings suggest that CRF may have an important cardioprotective role in children and adolescents and highlights the importance of promoting CRF in youth

Cardiorespiratory fitness is associated with hard and light intensity physical activity but not time spent sedentary in 10–14 year old schoolchildren: the HAPPY study

Sedentary behaviour is a major risk factor for developing chronic diseases and is associated with low cardiorespiratory fitness in adults. It remains unclear how sedentary behaviour and different physical activity subcomponents are related to cardiorespiratory fitness in children. The purpose of this study was to assess how sedentary behaviour and different physical activity subcomponents are associated with 10–14 year-old schoolchildren's cardiorespiratory fitness

Effects of reallocating time in different activity intensities on health and fitness: a cross sectional study

BACKGROUND: The effects of replacing time in specific activity categories for other categories (e.g. replacing sedentary time with light activity) on health and fitness are not well known. This study used isotemporal substitution to investigate the effects of substituting activity categories in an equal time exchange fashion on health and fitness in young people. METHODS: Participants were drawn from schools in Camden, London (n = 353, mean age 9.3 ± 2.3 years). Time sedentary, in light and in moderate-to-vigorous activity (MVPA) was measured via accelerometry. The effects of substituting time in activity categories (sedentary, light and MVPA) with equivalent time in another category on health and fitness were examined using isotemporal substitution. RESULTS: In single and partition models, MVPA was favourably associated with body fat %, horizontal jump distance and flexibility. Time sedentary and in light activity were not associated with health and fitness outcomes in these models. In substitution models, replacing one hour of sedentary time with MVPA was favourably associated with body fat % (B = -4.187; 95% confidence interval (CI), -7.233, -1.142), horizontal jump distance (B = 16.093; 95% CI, 7.476, 24.710) and flexibility (B = 4.783; 95% CI, 1.910, 7.656). Replacing time in light activity with MVPA induced similar benefits but there were null effects for replacing sedentary with light intensity. CONCLUSION: Substituting time sedentary and in light activity with MVPA was associated with favourable health and fitness. Time in sedentary behaviour may only be detrimental to health and fitness when it replaces time in MVPA in young people

Photo-induced proton gradients for the in vitro investigation of bacterial efflux pumps

We describe an original activity assay for membrane transport that uses the proton motive force-dependent efflux pump MexAB from Pseudomonas aeruginosa. This pump is co-reconstituted into proteoliposomes together with bacteriorhodopsin (BR), a light-activated proton pump. In this system, upon illumination with visible light, the photo-induced proton gradient created by the BR is shown to be coupled to the active transport of substrates through the pump

Population Structure of a Hybrid Clonal Group of Methicillin-Resistant Staphylococcus aureus, ST239-MRSA-III

The methicillin-resistant Staphylococcus aureus (MRSA) clonal group known as ST239-MRSA-III is notable for its hybrid origin and for causing sustained hospital epidemics worldwide since the late 1970s. We studied the population structure of this MRSA clonal group using a sample of 111 isolates that were collected over 34 years from 29 countries. Genetic variation was assessed using typing methods and novel ascertainment methods, resulting in approximately 15 kb of sequence from 32 loci for all isolates. A single most parsimonious tree, free of homoplasy, partitioned 28 haplotypes into geographically-associated clades, including prominent European, Asian, and South American clades. The rate of evolution was estimated to be approximately 100× faster than standard estimates for bacteria, and dated the most recent common ancestor of these isolates to the mid-20th century. Associations were discovered between the ST239 phylogeny and the ccrB and dru loci of the methicillin resistance genetic element, SCCmec type III, but not with the accessory components of the element that are targeted by multiplex PCR subtyping tools. In summary, the evolutionary history of ST239 can be characterized by rapid clonal diversification that has left strong evidence of geographic and temporal population structure. SCCmec type III has remained linked to the ST239 chromosome during clonal diversification, but it has undergone homoplasious losses of accessory components. These results provide a population genetics framework for the precise identification of emerging ST239 variants, and invite a re-evaluation of the markers used for subtyping SCCmec