Effect of preventive measures in the containment of SARS-CoV-2 epidemic: a comparative study.

From the time when the first cases of COVID-19 were reported in Wuhan City, China, in December 2019, strict regulations are being implemented by policy makers to contain the spread of the virus. The measures taken in different countries spanned from complete isolation and lockdown to different degrees of restrictions to people's movement, contact between people, hygiene and sanitation. Accordingly, the success in containing the virus also differed.

Detecting the Zambezi River plume using observed optical properties.

In April 1998 a research cruise was carried out in the Mozambique Channel taking detailed optical, water quality and salinity measurements; the Zambezi plume waters were apparent through strong colour fronts with green waters in the plume and clear blue waters offshore. A good (r2 = 0.76) negative empirical relationship was found between the salinity (S) and yellow substance, represented by the absorption of filtered samples at 440 nm (g440).