Human beings have been exposed to natural sources of ionizing radiation throughout history, including cosmic rays and radiation produced by radionuclides on the earth. The collective radiation dose to humans comes mainly from natural background radiation and medical tr.......
Due to the current fierce competition in the building materials market, the market is mixed. Consumers should have mastered the electrical knowledge of home improvement. This is very important for both the safety of themselves and others, as well as the problems of daily electricity. Here&.......
Brenda Tan and Matt Cowst (pictured above) are students at a college in New York. They recently completed a project based on DNA barcode technology. The so-called DNA barcode refers to a fragment taken from a standard DNA gene sequence that can be used to determine the species.
Th.......
Modular solution based on standard tools
Aeroengine parts are made of high-toughness materials with complex properties, which are very demanding on the process, which requires the use of non-standard tools too frequently. Currently, the solution comes from a standar.......
As the major home furnishing stores in Beijing resume business one after another, the after-sales service department becomes busy at once. The com.......
According to the latest market report provided by the well-known steel spot trading platform “Nishimoto Shinkansenâ€, the “good†steel market from “energy-saving and emission-reduction†in September has clearly come to an .......