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    Home > [quick news] on February 1, 2019, researchers found important molecular characteristics of dinosaurs evolving into birds

    [quick news] on February 1, 2019, researchers found important molecular characteristics of dinosaurs evolving into birds

    • Last Update: 2019-02-01
    • Source: Internet
    • Author: User
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    In a new study, a team of Chinese and American researchers found that the structural proteins of feathers of early feathered dinosaurs were different from those of modern birds More than 90% of the feathers of modern birds are made up of β - keratin, and the structural fiber formed by it is the molecular structure basis of supporting birds to fly However, the feathers of ornithosaurus are mainly composed of α - keratin, with only a small amount of β - keratin This difference is an important feature of the evolution of dinosaurs into birds at the molecular biological level The results also showed that the closer to modern birds, the higher the content of β - keratin in feathers More than 20 million years ago, the molecular structure of bird feathers is exactly the same as that of modern birds Https:// scientists in China have found that for a long time, the determinants of organ size have been the focus of scientific research The abnormal signal pathway of Hippo will lead to excessive growth of a large number of organs, which will induce tumor in human and animals Scientists found that the Hippo pathway controls the activity of Yap, a transcription factor, through a series of protein phosphorylation modifications The abnormal increase of Yap protein is one of the characteristics of tumor, but the reason and the way of the increase are still unclear Recently, Zhou Zizhang research group, Liu Qingxin research group and Lu Ligong research group of Shandong Agricultural University and Zhuhai People's hospital found that the more upstream ubiquitinase USP7 inhibited the degradation of Yap protein, resulting in its abnormal increase USP7 can be used as a potential drug treatment target for liver cancer Https:// nanotechnology has made special aluminum alloy weldable In the 1940s, scientists developed aluminum alloy AA 7075, which is almost as solid as steel, but only one third of the weight of steel It has been used in aircraft fuselage and wings, smart phone shell, climbing buckle and other objects However, it is difficult to weld AA 7075, especially it can not be welded by the welding method used in automobile manufacturing, so it can not be widely used Recently, with the help of titanium carbide nanoparticles, engineers at UCLA have made the solderable AA 7075 possible The products obtained are expected to be used in automobile manufacturing and other fields, making its parts lighter, more energy-saving and the same strength Https://phys.org/news/2019-01-nanotechnology-enables-well-previously-un-weldable.html Microsoft abandons the mobile operating system: don't let go of the wrong talent and the right encounter not long ago, Microsoft announced that it will no longer be windows 10 mobile since December 10 this year Mobile phone users provide new security updates and patches, and relevant auxiliary support options and online technical content updates are also stopped This means that Microsoft's competition for the mobile device operating system market has completely failed Although Microsoft finally lost the mobile operating system market, it may not be a bad thing for Microsoft This time Microsoft gave up the mobile operating system market completely, which is actually conducive to focusing its limited strategic resources on cloud services, artificial intelligence and other key areas of development Http://digitalpaper.stdaily.com/http_ HTM? Div = - 1 notice on nominating 2019 He Liang He Li science and Technology Award He Liang He Li fund is a Hong Kong social public welfare fund jointly established by he shanheng, Liang Qiju, He Tian and Li Guowei, the patriotic financial Industrialists of Hong Kong, in line with the noble sentiment of loving the motherland, science and talents, and with the lofty vision of "building a reward fund for China and rewarding outstanding scientific and technological workers in China" According to the fund selection method, the nominees for the science and technology award of Heliang Heli fund are composed of famous experts, scholars and senior managers in various disciplines and industries in China The award nomination in 2019 is scheduled for the first quarter http://
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