The line capacity of fixed block signalling is reciprocal of the minimum headway and is defined as the maximum number of the train that can pass through a stretch of track per unit time for safety ...

Therefore, it is possible to synthesize COFs with different structures by twisting building blocks from planar to tetrahedral with steric hindrance. We believe this result represents a general and ...

Chile's ALMA observatory, which houses some of the world's most powerful telescopes, has captured its most detailed images to date of the building blocks of the early universe -- primarily cold ...

Which magnetic building blocks are best? Parents are giving their babies, kids and toddlers more STEM toys to educate them and help them succeed in a global market. Sets of magnetic building ...

Porous structured particles with magnetic cellulose nanofiber as their building blocks provided sustainable materials with excellent performance of macromolecule adsorbent.