It is reported that the Russian New Crown Virus Epidemic Prevention and Control Headquarters released a message on the 25th that based on the principle of reciprocity, Russia will resume international flights with Germany, Venezuela, Syria, Tajikista…
In the UK, more than 100 schools were closed because of the danger of collapse In the UK, many schools use Autoclaved aerated cement (RAAC). This is a concrete material that is lighter. In 2018, the roof of a school in southeast England fell dow…
SLS Nylon Powder PrintingNylon sintering (selective laser sintering) is a project that uses spread powder sticks to tile a thick layer of powder materials, such as 3D printed metal powders, on parts. It is heated below the powder melting temperature…
Researchers at Chalmers University of Technology in Sweden have proposed that a new type of graphene could be used as a special effect material for the production of high-performance electrodes for sodium batteries.…