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E-Mail Credit: Peter the Great St.Petersburg Polytechnic University Researchers from Peter the Great St.Petersburg Polytechnic University (SPbPU) developed and manufactured a unique 3D printer named the Prism . The 3D-printer was manufactured and firstly demonstrated on January 29, 2021. The main purpose of the developed printer is to print structures made of titanium, an expensive material, but essential for various industries due to its strength properties and low specific weight. The printing system is located in a chamber with an inert atmosphere. This printer may also be used to print products made of steel, aluminum, magnesium, nickel alloys. The researchers used the wire as a raw material to ensures the high productivity of the process. The layer-by-layer deposition is performed in the 3D printer, in which the wire is melted due to the burning of an electric arc. In developed printer two wires can be fed simultaneously to increase productivity and to synthesize ....
They say they are going to dig in. this is the last step. all the other universities across hong kong have fallen. but the protesters will dig in and try to protect the university against their police. as the protesters said time and time again throughout the day, we are at war. as far as the police are concerned, everyone here are rioters. perhaps only a thousand or a few more protesters here that have come from other universities where they have been taking action throughout the week. they have now all intended here at polytech university. as i say, this is the final step. keep an eye to or us, anna coren. thank you. anna coren in hong kong. as the protests rage in on hong kong, anger against the government mounting. ....
reporter: i have the gas mask on, michael, because tear gas has been fired over the last hour since we last week. they are expecting police to charge very, very soon. we are standing outside polytech university. down here is where the two water cannons are. they have been throughout the day spraying water, charging, retreating. but they have kind of held their position. they re shining their really strong lasers on this direction of this overpass. on the other side, are dozens of riot police vehicles with riot police standing outside and vehicles firing tear gas. there is a twhaul protesters have built on top of this overpass, which is over the crest harbor tunnel that leads ....