Double-surgical-mask-with-slit and COVID-19 prevention

Is the use of a mask useful in the prevention of covid-19 disease? An Evidence review study

Background and aims: Coronaviruses are important pathogens in humans and animals. In late 2019, a new coronavirus was identified as the cause of a group of pneumonia cases in Wuhan, Hubei Province, China. The disease spread rapidly, resulting in epidemics in China and reports of sporadic cases worldwide. In February 2020, the World Health Organization (WHO) identified COVID-19, which stands for...

Nutrition and Infection with COVID-19

Surgical Practice in the Shadow of COVID-19 Outbreak

  Background: COVID-19 epidemic rapidly spread all around the world with over 1500 thousand infected cases and95000 deaths. This rapid pandemic may overwhelm health care capacity and shortage of resources is a major concern.Literature provided guidelines on management of COVID-19 patients but healthcare service to the normal populationshould be continued meanwhile. Health sys...

Attosecond double-slit experiment.

A new scheme for a double-slit experiment in the time domain is presented. Phase-stabilized few-cycle laser pulses open one to two windows (slits) of attosecond duration for photoionization. Fringes in the angle-resolved energy spectrum of varying visibility depending on the degree of which-way information are measured. A situation in which one and the same electron encounters a single and a do...

Providing Safe and Effective Surgical Care During the COVID-19 Outbreak in the UK – Changing Strategies