Ribonucleic acid (RNA) is one of life's most versatile molecules, with roles going far beyond being a messenger of genetic ...
The Corinthian helmet, circa 650-600 B.C., has a rounded top with small openings for the eyes and a distinctive nose-piece. Historian Herodotus mentions the helmet as a defining equipment of the ...
where F D is called the dimensionless hydraulic force. Therefore, it is easy to calculate a design hydraulic force if the impeller power-draw characteristics are known and F D is known. This value may ...