Excess of deaths is a technique used in epidemiology to assess the deaths caused by an unexpected event.For the present COVID-19 pandemic, we discuss the performance of some linear and nonlinear time series forecasting techniques widely used for modeling the actual pandemic and provide estimates for this Socks metric from January 2020 to April 2021
Due to the wide use of gearmotor systems in industry, many diagnostic techniques have been developed/employed to prevent their failures.An insufficient lubrication of gearboxes of these machines could shorten their life and lead to catastrophic failures and losses, making it important to ensure a required lubrication level.For the first time in wor
A study of the diatoms Eupodiscus radiatus Bailey and Fryxelliella floridana Prasad, mainly focussing on the mantle and CHARGER cingulum, provided new morphological information.In E.radiatus dendritic structures and two types of a palisade-like structure fixed to silica rings were found on the lower valve mantle.Cingulum presented 1-3 bands with ar