[PDF] 2D21.pdf

2d 21 21 Draw is an on learning munity where students of all skill levels can learn how to be a better artist. Our contributing artists and instructors are the best in the world.. The Sylvania Type 2D21 is a miniature four element thyratron with negative control character

2d 69, In this work, we introduce helical chirality into 2D COFs using confurationally stable enantiopure and racemic [5]helicenes as linkers in.