Chinese authorities have launched Changzheng-2D (“Great Journey 2D”) launch vehicle with two satellites on board. This was reported by the Central Television of China.
The launch took place from the Jiuquan spaceport in Northwest China. On board the launch vehicle were Gaofen-9 high-resolution Earth remote sensing device and Hede-4 satellite. The latter will collect information about the Internet of Things, aviation and marine navigation. The device Gaofen-9 will be used in road construction, crop assessment in agriculture, as well as in the elimination of natural disasters.
HEAD-4, developed by the Beijing-based Chinese Company HEAD Aerospace Technology, is designed to globally collect information on the movement of aircrafts and ships, as well as data for the Internet of Things. This flight of the Changzheng launch vehicle has already become the 333th in a row.
A new periodic table of elements where protons in the nucleus are taken as the basis was invented (link: https://ria.ru/20200527/1572083345.html) by scientists from the Kyoto University. It is noted that, unlike the famous Mendeleev’s table, it is based not on the similarity of the chemical properties of elements determined by the number of electrons in the orbit of the atomic nucleus, but on the behavior of protons in the nucleus.
According to the journal Foundations of Chemistry, the starting point for scientists was a list of nuclei with completely filled proton shells. These are helium, oxygen, calcium, nickel, tin, lead and flerovium. These elements, which protons have magic numbers such as 2, 8, 20, 28 and beyond, react with others only in special cases.
Our nuclear periodic table also shows that the nuclei, as a rule, have a spherical shape near magic numbers, but deform when moving away from them, Kouichi Hagino, one of the table’s inventors says. According to scientists, an alternative periodic table of elements allows taking a fresh look at some elements and make new scientific discoveries.