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    Home > [quick news] paper database of Elsevier company on May 8, 2019: China's high-quality papers have surpassed Japan's

    [quick news] paper database of Elsevier company on May 8, 2019: China's high-quality papers have surpassed Japan's

    • Last Update: 2019-05-08
    • Source: Internet
    • Author: User
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    Elsevier's paper database: China's high-quality papers have overtaken Japan's science and technology promotion agency Using the paper database of Elsevier, a Dutch academic publishing giant, this paper analyzes the top 10% of the papers that have been cited on average in recent years, covering the fields of physics, chemistry, life sciences, computers and materials151 Research areas The analysis found that about 20 years ago, only two of China's 151 research fields could rank in the top five; but about 10 years ago, the number surged to 103; in 2017, the number reached 146 - 71 of which ranked first, including mathematics, engineering, materials, etc On the other hand, the number of research areas in which Japan can be ranked in the top five is plummeting - compared with about 20 years ago, Japan's top five research areas have dropped from 83 to 18, and only two high-quality research areas can be ranked in the top three This means that Japan's relative scientific research strength has declined significantly In addition, the analysis also found that the United States still shows a high level of state - although it has been surpassed by China in some areas, there are still 80 areas that can occupy the top position, and all research areas have entered the top 5, maintaining a consistent strong scientific research strength Http://digitalpaper.stdaily.com/http_www.kjrb.com/kjrb/html/2019-05/08/content_420664 HTM? Div = - 1 three examinees in Guizhou violated the national college entrance examination and were cancelled after entering Tsinghua Fudan University "College entrance examination immigration" has been widely concerned by the society The website of Guizhou Provincial College of admissions and examination released a notice on the handling results of the illegal examinees, such as Ku, such as Ku, such as Ku, 3 Three candidates were disqualified by Tsinghua University, Fudan University and Beijing Foreign Studies University The report pointed out that since the policy of migrant children taking part in the college entrance examination in Guizhou Province was introduced, a small number of people obtained the qualification of college entrance examination in Guizhou Province by hanging their school status in the air, which had a bad impact According to the circular, all levels of recruitment and examination institutions should attach great importance to the examination of the college entrance examination qualifications of the children who move with them, and strictly prevent and crack down on the fraud of obtaining the college entrance examination qualifications illegally Once found, it will be dealt with seriously according to laws and regulations to ensure the fairness and order of college entrance examination Http://www.chinanews.com/sh/2019/05-07/8829747.shtml US research shows that the chemical composition in the blood of sunscreen exceeds the standard in one day A small-scale preliminary study in the US shows that some of the chemical substances will enter the blood of human body in one day when sunscreen is used, and the level is higher than the standard of the US Food and Drug Administration Researchers from the center for drug evaluation and research, the U.S Food and drug administration, called on 24 healthy volunteers to take part in the tests and come to the conclusion In the study, volunteers were divided into groups and applied 75% of their skin with sunscreen of different properties and brands four times a day for four consecutive days After the first day of sunscreen use, the researchers found that the levels of three chemicals in the blood, including Oxybenzone, continued to rise and exceeded the relevant standards of the U.S Food and drug administration When sunscreen was stopped, the chemicals remained in the volunteers for at least 24 hours However, Robert karev, the former head of the U.S Food and drug administration, said there was no need for consumers to stop using sunscreen Because the study found that users' blood levels of sunscreen chemicals "far higher than FDA standards do not mean they are unsafe." Other experts who were not involved in the study noted that the amount of sunscreen used by volunteers in the study was much higher than that of people's daily use Http://www.xinhuanet.com/world/2019-05/08/c_.htm "live poppy Exhibition" to enhance public awareness of drug control recently opened in the agricultural experience Park of Beijing Botanical Garden, Institute of Botany, Chinese Academy of Sciences in 2019 In this exhibition, more than one thousand living drug plants and the same family and genus plants similar to the biological characteristics of drug plants are exhibited By cooperating with the exhibition board and explanation, the public's awareness of drug plants and their hazards is improved, the whole society's awareness of drug control is further strengthened, and the public is correctly guided to cherish life and stay away from drugs More than 100 poppies, marijuana and ephedra, common drug plants in northern China, and more than 800 poppy like ornamental flowers such as ghost poppy (Oriental Poppy), Yu Meimei, wild poppy (Icelandic poppy) and hibiscus, which are common in life, are exhibited in the exhibition The public can understand the taxonomic knowledge of these plants through on-site observation, combined with the introduction and explanation of the exhibition board, and master the difference between the drug plants and similar ornamental plants In addition, the exhibition also introduced the drug control process, drug control situation and the harm of new drugs in detail, introduced the drug control knowledge to the public, and further improved the public awareness of drug awareness, prevention and rejection The exhibition will last until May 20 After the exhibition, all the drug plants on display will be destroyed by the public security department Http://news.scienceet.cn/htmlnews/2019/5/425932.shtm damaged pig lung can be repaired in vitro and used for transplantation The British journal Nature Communication published a medical update on the 7th: US scientists reported that they used the external organ support system to regenerate the damaged pig lung The preliminary results showed that the damaged lung could be repaired and used for organ transplantation Inhalation of gastric contents refers to the entry of gastric substances into the respiratory tract This common injury will lead to the inability of the lung to be transplanted In view of the global shortage of transplant donors, the regeneration technology of damaged lung is expected to expand the suitable organ bank for human transplantation The research team took pig as the experimental object (the size and shape of pig's internal organs are similar to human organs, and it is also considered as a potential donor of organ transplantation), reproduced the inhalation injury of gastric contents in 8 pigs, and connected the damaged lung with the recipient's circulatory system through the external support system to maintain the organs Using this cross circulation system, the donor lung can be maintained for up to 36 hours in vitro, allowing a series of therapeutic interventions to be carried out The system can not only regenerate the damaged lung, but also improve its function, and the regenerated lung can meet all transplant conditions https://www.nature.com/articles/s41467-019-09908-1
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