Essentially all cells in an organism's body have the same genetic blueprint, or genome, but the set of genes that are actively expressed at any given time in a cell determines what type of cell it ...

Wide binary stars with separation greater than about 2000 astronomical units are interesting natural laboratories that allow a direct probe of gravity at low acceleration weaker than about 1 nanometer ...

Science Progress (1933-), Vol. 103, No. 1 (2020), pp. 1-21 (21 pages) Parallel kinematic machines have been applied in aerospace and automotive manufacturing due to their potentials in high speed and ...

In 1964, R. R. Rogers proposed a method for estimating vertical air velocity in rainfall which is based on the Marshall–Palmer raindrop size distribution. Many investigators have shown that there are ...