Knowledge of prevention of COVID-19 among the general people in Bangladesh: A cross-sectional study in Rajshahi district.

Background: Until now, no vaccine or effective drug is available for the control, prevention, and treatment of COVID-19. Preventive measures are the only ways to be protected from the disease and knowledge of the people about the preventive measures is a vital matter.

Objectives: The aim of the study was to assess the knowledge of the general people in Rajshahi district, Bangladesh regarding the COVID-19 preventive measures.

Preparation and characterization of ZnO/PEG-Co(II)-PbO nanocomposite electrode and an investigation of the electrocatalytic degradation of phenol.

A ZnO/PEG (polyethylene glycol) -Co(II)-PbO nanocomposite electrode was constructed by using the anodic electrodeposition method and used for the electrocatalytic degradation phenol. The results showed that the electrode surface formed numerous PbO nanosphere structures, and the average size of a single nanosphere is approximately 0.4 μm.

Evolution of model specific relative growth rate: Its genesis and performance over Fisher's growth rates.

Growth curve models play an instrumental role to quantify the growth of biological processes and have immense practical applications across disciplines. In the modelling approach, the absolute growth rate and relative growth rate (RGR) are two most commonly used measures of growth rates. RGR is empirically estimated by Fisher (1921) assuming exponential growth between two consecutive time points and remains invariant under any choice of the underlying growth model.