For the first time in the world, researchers (From Korea University, Sukbae Lee, Ji-Hoon Kim, Hyun-Tak Kim) have succeeded in synthesizing a room-temperature superconductor (Tc≥400 K, 127∘C) working ...

1. The source of pressure for the bleeding of trees in spring seems to be localized in different portions of the plant in different species. 2. Trees may be roughly classified into two groups in this ...

Analytical expressions have been derived for the exchange of air across doorways or similar apertures, in terms of the temperature difference between the spaces on both sides of the opening and the ...