Buscar recursos académicos

Dr. Deborah Birx, the White House Coronavirus Task Force coordinator, told NBC News on “Meet the Press” that “[T]he U.S. needs a ‘breakthrough’ in coronavirus testing to help screen Americans and get a more acc...

An earthquake is a vibration that occurs due to plates at the base of the earth rubbing against each other. An earthquake can have several impacts, namely material loss and loss of life and trauma for some people who fee...

The act of persuasion happens anywhere and anytime. When we need a help, we persuade other to do what we need. In order to have a successful persuasion, we apply certain strategy. This pragmatic paper wants to analyse th...

In this paper the compounds (11-20) (methyl pyrimidine - 2(1H)-one and others phenyl pyrimidine -2(1H)- one) that will prepared from α, β unsaturated carbonyl compounds they are called chalcones, that compounds prepare...