Order of emergency orders in a company of distribution of electrical energy

The emergence of emergency orders, in the course of services already underway, in an electricity distribution concessionaire is inevitable, characterizing a dynamic scenario. Minimizing the delays resulting from these emergencies is a challenge for companies that provide this type of service. In this way, such companies need strategies to meet the needs of customers while meeting regulatory requirements. Aiming at this routing problem, the following work aims to identify evaluation criteria in the dispatch of these emergency orders and the impacts that these criteria will result in the execution times of these work orders in an electricity distribution company. As findings of this research, we verify that the demand exceeds the capacity of the teams and that the orders end up being passed on to the next day. Through the criteria, it was possible to prioritize commercial and emergency orders and analyze the impact generated

Prevalence of diabetic retinopathy in Brazil : a systematic review with meta-analysis

Aims To evaluate the prevalence of diabetic retinopathy (DR) in Brazilian adults with diabetes mellitus via a systematic review with meta-analysis. Methods A systematic review using PubMed, EMBASE, and Lilacs was conducted, searching for studies published up to February 2022. Random efect meta-analysis was performed to estimate the DR prevalence. Results We included 72 studies (n=29,527 individuals). Among individuals with diabetes in Brazil, DR prevalence was 36.28% (95% CI 32.66–39.97, I 2 98%). Diabetic retinopathy prevalence was highest in patients with longer duration of diabetes and in patients from Southern Brazil. Conclusion This review shows a similar prevalence of DR as compared to other low- and middle-income countries. However, the high heterogeneity observed—expected in systematic reviews of prevalence—raises concerns about the interpretation of these results, suggesting the need for multicenter studies with representative samples and standardized methodology

Sleep duration in elderly obese patients correlated negatively with intake fatty

Study objectives: The purpose of the present study was to evaluate the relationship between sleep duration and dietary habits in elderly obese patients treated at an institute of cardiology. Methods: The fifty-eight volunteers were elderly patients with obesity (classified as obese according to BMI) of both genders, between 60 and 80 years of age. All participants were subjected to assessments of food intake, anthropometry, level of physical activity, and duration of sleep. Results: The men had significantly greater weight, height, and waist circumference than women. Sleep durations were correlated with dietary nutrient compositions only in men. We found a negative association between short sleep and protein intake (r = -0.43; p = 0.02), short sleep and monounsaturated fatty acids intake (r = -0.40; p = 0.03), and short sleep and cholesterol dietary intake (r = -0.50; p = 0.01). Conclusions: We conclude that mainly in men, volunteers that had short sleep duration showed a preference for high energy-density as fatty food, at least in part, may explain the relationship between short sleep duration and the development of metabolic abnormalities

Estudo do comportamento mecânico da dureza e da morfologia do compósito Al2O3-YAG

Os óxidos cerâmicos possuem alta resistência à oxidação e à corrosão em ambientes agressivos e em elevadas temperaturas, o que torna o seu emprego bastante atraente em relação a outros cerâmicos. Na década de 90, diversos pesquisadores mostraram o YAG como sendo o óxido de maior resistência à fluência em elevadas temperaturas. Nesta pesquisa, os pós reagentes, Al2O3 e Y2O3 foram misturados nas proporções em peso de 63,65 e 36,35% e 80,00 e 20,00%, respectivamente. Após, a mistura foi moída em moinho de bolas, por 5h, secos em estufa por 48 h, à 120 °C. Depois desaglomerados em gral e pistilo e peneiramento em peneiras de 120 mesh. Na etapa de compactação, os pós foram prensados em matriz e punção de aço, à 70 MPa, por 20 s de aplicação de carga. No processo de sinterização, foram realizados em forno em 1500 e 1600 °C, com 3 h de patamar, com taxa de aquecimento e resfriamento de 5 ºC/min, ao ar. Foram produzidos cinco corpos de prova para cada condição de sinterização. As amostras sinterizadas foram cortadas a fim de serem embutidas em baquelite. Após esta etapa as amostras foram lixadas em lixas diamantadas e foram polidas em pasta de diamante. As amostras foram avaliadas por dureza por microindentação Vickers e por Microscopia Eletrônica de Varredura (MEV). A amostra na composição eutética sinterizada à 1600°C apresentou maior dureza de 1200 HV.