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

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

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

Performance of the CMS Cathode Strip Chambers with Cosmic Rays

The Cathode Strip Chambers (CSCs) constitute the primary muon tracking device in the CMS endcaps. Their performance has been evaluated using data taken during a cosmic ray run in fall 2008. Measured noise levels are low, with the number of noisy channels well below 1%. Coordinate resolution was measured for all types of chambers, and fall in the range 47 microns to 243 microns. The efficiencies for local charged track triggers, for hit and for segments reconstruction were measured, and are above 99%. The timing resolution per layer is approximately 5 ns

Characterization of Pseudomonas aeruginosa isolates: Occurrence rates, antimicrobial susceptibility patterns, and molecular typing in the global SENTRY Antimicrobial Surveillance Program, 1997-1999

During 1997–1999, a total of 70,067 isolates (6631 Pseudomonas aeruginosa isolates) were analyzed in the SENTRY program by geographic region and body site of infection. The respiratory tract was the most common source of P. aeruginosa. P. aeruginosa isolation rates increased during the study interval. Europe was the only region to show a significant decline in β-lactam and aminoglycoside susceptibility rates. There was a reduction in the rates of susceptibility of Canadian isolates to imipenem and of Latin American isolates to meropenem. A total of 218 multidrug-resistant P. aeruginosa isolates (MDR-PSA; resistant to piperacillin, ceftazidime, imipenem, and gentamicin) were observed; MDR-PSA occurrence rates (percentages of all isolates) ranged from 8.2% (Latin America) to 0.9% (Canada). No antimicrobial inhibited >50% of MDR-PSA strains. Molecular characterization of selected, generally resistant strains was performed. Isolates showing unique ribogroups were found in Europe, Latin America, and the United States, but clonal spread was documented in several medical centers.A. C. Gales, R. N. Jones, J. Turnidge, R. Rennie, and R. Rampha