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    Home > [quick news] on September 29, 2018, expose the "technology materials" visible and invisible to "Optical Valley quantum"

    [quick news] on September 29, 2018, expose the "technology materials" visible and invisible to "Optical Valley quantum"

    • Last Update: 2018-09-29
    • Source: Internet
    • Author: User
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    Expose the "technology materials" visible and invisible to "Optical Valley quantum" The shape full of futuristic feeling, flexible and beautiful curve, and the carbon black windows with strong sense of science and technology Looking from afar, I thought it was the super power figure in a science fiction movie that turned into a train Recently, the world's first commercial composite vehicle body urban rail vehicle developed by CRRC Changchun rail car Co., Ltd (hereinafter referred to as CRRC long guest)“ "Optics Valley quantum" was first exhibited to the public at China (Changchun) rail transit exhibition, attracting numerous eyeballs Speaking of its scientific and technological content, Ma Yanbo, head of car body R & D Department of CRRC Changke, said: "the two most important core technologies of" Optical Valley quantum ", one is the car body made of all carbon fiber composite materials, the other is the super energy capacitor storage technology, which is the first in China and the first application in the rail transit industry." Http://digitalpaper.stdaily.com/http_ Div = - 1 Children who spend too much time on electronic devices cause poor brain development An important study found that children who spend time on electronic devices or watching TV have about 5% less cognitive function than those who are 8 to 11 years old %, which means that having children spend more than two hours a day on their mobile phones or watching TV can damage their brain power For example, browsing social media, playing games, watching plays and so on for more than two hours will have an impact on the brain, because the screen can not stimulate the brain like reading, and may lead to a decline in sleep quality, so the balance between screen time and reading time is the key Https:// there are many "chicken ribs" in domestic journals, but who is responsible for "death" in who's post? Many domestic scientific and technological journals are chicken ribs Leaders in charge think that this journal has lived for decades Is it my responsibility to die in my post? So let it go and let it become a decoration " During the interview, an editor of a domestic English periodical couldn't help but "expose the truth" On the one hand, in order to protect the face of journal numbers and even research institutions, a large number of low-quality scientific and technological journals live and die, making "windfall" by selling pages Under the big and scattered chaos, there are hidden gray industrial chains On the other hand, a few high-quality journals are marching forward with administrative shackles, and they are struggling on their way to the top Therefore, excellent papers compete to "go abroad" and scientific researchers "ask the West and the East first" As the best display platform of scientific and technological achievements, it is difficult for domestic scientific and technological journals to bear the heavy burden In addition to the competition of international first-class journals, how can the situation be broken when the poor get poorer? Http://news.scienceet.cn/htmlnews/2018/9/418185.shtm an electrical engineering research published on the website of nature, the first show of self powered wearable heart sensor, reported the first self powered wearable heart sensor that can keep stable operation under bending condition, which can be used as a development template for various self powered flexible electronic devices Flexible electronic device is an electronic device that can still work under a certain range of deformation (bending, folding, torsion, compression or stretching) It has a wide application prospect in information, energy, medical, national defense and other fields with its unique flexibility, ductility, high efficiency and low cost manufacturing process In particular, flexible electronic devices can be attached to the skin, indicating a new generation of biomedical devices that can track different physiological signals (such as heartbeat) Https:// Chinese scientists have made a breakthrough in the study of circular chromosome rearrangement Recently, the Journal of nature · Communication published the research paper "ring synthetic chromosome V Scrabble" of Chinese scientists online ”The ability of continuous evolution in genotype and phenotype of synthetic ring chromosome was confirmed, which showed that compared with natural linear chromosome, artificial ring chromosome had more complex rearrangement Based on the support of national science and technology plan, the research team led by yuanyingjin of Tianjin University has made the latest breakthrough The variation of chromosome structure has an important effect on the phenotypic diversity In this study, haploid Saccharomyces cerevisiae with circular chromosome 5 was used as a model to study the variation and evolution of genome structure by using the unique Scrabble system of synthetic yeast chromosome, which revealed that circular chromosome can continuously generate complex genome variation and phenotype optimization https://
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