Data Cleansing of Multiple Environmental Monitoring Time Series Using Spatio-Temporal Correlation

Aplicações computacionais baseadas em dados de sensores são uma realidade, mas os dados coletados e transmitidos para as aplicações raramente chegam prontos para o uso devido a perdas e ruídos de vários tipos. Neste trabalho desenvolve-se uma abordagem baseada em correlação espaço temporal para limpeza de dados de múltiplas séries temporais de sensores quanto à ruído, dados ausentes e outliers. O método foi testato em seis conjuntos de dados reais publicamente disponíveis e o seu desempenho foi comparado com um método baseline, com um autoencoder denoising e com outro método publicado. Os resultados mostram que a abordagem proposta é competitiva e requer menos dados de treinamento do que os concorrentes.

Neurointensive care of traumatic brain injury in the elderly—age-specific secondary insult levels and optimal physiological levels to target need to be defined

Background Elderly patients with traumatic brain injury increase. Current targets and secondary insult definitions during neurointensive care (NIC) are mostly based on younger patients. The aim was therefore to study the occurrence of predefined secondary insults and the impact on outcome in different ages with particular focus on elderly. Methods Patients admitted to Uppsala 2008–2014 were included. Patient characteristics, NIC management, monitoring data, and outcome were analyzed. The percentage of monitoring time for ICP, CPP, MAP, and SBP above-/below-predefined thresholds was calculated. Results Five hundred seventy patients were included, 151 elderly ≥ 65 years and 419 younger 16–64 years. Age ≥ 65 had significantly higher percentage of CPP > 100, MAP > 120, and SBP > 180 and age 16–64 had higher percentage of ICP ≥ 20, CPP ≤ 60, and MAP ≤ 80. Age ≥ 65 contributed independently to the different secondary insult patterens. When patients in all ages were analyzed, low percentage of CPP > 100 and SBP > 180, respectively, was significant predictors of favorable outcome and high percentage of ICP ≥ 20, CPP > 100, SBP ≤ 100, and SBP > 180, respectively, was predictors of death. Analysis of age interaction showed that patients ≥ 65 differed and had a higher odds for favorable outcome with large proportion of good monitoring time with SBP > 180. Conclusions Elderly ≥ 65 have different patterns of secondary insults/physiological variables, which is independently associated to age. The finding that SBP > 180 increased the odds of favorable outcome in the elderly but decreased the odds in younger patients may indicate that blood pressure should be treated differently depending on age.

Efficacy of Ozone Gas against All Stages of Red Flour Beetle, Tribolium castaneum (Herbst) (Coleoptera: Tenebrionidae) at Different Temperatures and Exposure Periods

Ozone efficacy (approximately of 600 Mg.hr-1) was evaluated against Red Flour Beetle’s (RFB, Tribolium castium (Herbst)) eggs, larvae, pupae and adults at different temperatures (35, 40 and 45 ° C) and exposure times (1, 2, 4, 6, 8, 10 hours) under laboratory. The control treatments included above thermal levels without ozone at the mentioned exposure periods. The results indicated ozone effectively suppressed hatching with increasing temperature. The hatch egg rates was reduced to 0 % in the treated treatments after 10 h at 45° C. However, mortality rates of RFB were increased with maximizing of the exposure time to ozone. After 10-h exposure to ozone at the lowest temperature 35˚ C, complete mortality (100%) or few survivals of RFB were recorded in the susceptible stages (larvae and adults). Also, the complete mortality of adults and larvae resulted after an exposure to ozone at 40 ° C for 10 hours, compared than the high survival rates at the pest’s stages at 30 and 40° C, even after 10 hours of monitoring time. However the exposure time which is required to 100% mortality was decreased to 4 hours at 45 ° C, comparing to the thermal treatment only (control) which needed more time (6 h) for 100% of mortality. In conclusion, ozone application showed the efficacy on the mortality at all stages of RFB and the temperature was a potential factor enhancing the application of ozone for RFB control.

Fungicidal effects on cement composites with recycled glass from photovoltaic panels

This research was focused on the effects of micromycetes on cement composites with 100% replacement of natural aggregate by the recycled glass from photovoltaic panels. The experiment was performed on samples of small beams measuring 40 x 40 x 8 mm (length x width x height) and cement crumbling with recycled glass from photovoltaic panels in percentages representing 10%, 20% and 40%. The representatives of the selected micromycetes were Aspergillus niger, A. clavatus, Penicillium glabrum, Cladosporium sp. and Zygomycetes sp. Biocorrosion causes changes in the properties of the material, mainly as a result of the action of microorganisms. Due to their large production of acids and enzymes, micromycetes are an important part of microscopic consortia involved in biocorrosion. This experiment focused on evaluating the effect of micromycetes on cement composites – solid structure and crumbling, with 100% replacement of natural aggregate with photovoltaic glass recyclate. The results show a high growth of biomass on solid composites, while on cement crumbling, the growth was minimal due to high pH value. Longer monitoring time was used in case of adaptation to the environment.