[quick news] April 26, 2019 "tree climbing class", "fat reduction class", "hot pot class" There are many kinds of optional courses in the University

"Climbing class", "fat reduction class", "hot pot class" There are so many kinds of college elective courses Nowadays, the elective courses in domestic universities are more and more colorful! In order to help college students lose weight scientifically, Nanjing Agricultural University has set up "fat reduction course" for many years in a row The course introduction shows that the course is mainly for obese college students, and the candidates need to meet one of the following conditions: BMI ≥ 28, or fat% ≥ 30, in order to take it Three times a week, there are also national first-class nutritionists to guide diet By the end of the term, students will be able to get credit for the course if they lose 7% of their weight or 10% of their body fat In Southwest Jiaotong University, there is such a "hot pot course" With hot pot and steak, you can get credit Have you ever met such a good thing? As soon as the elective course is open, the students crowd the threshold Northwest University has set up a "tree climbing course" In this special class, no matter boys or girls, they will give up their usual quiet side, climb the rope, incarnate "Taishan next door" and leap between trees Http://cul.chinanews.com/sh/2019/04-26/8820688.shtml 1714 anti-cancer drugs have been reduced in price in China on April 25 Xue Haining, deputy director of the system reform department of the national health and Health Commission, said at a press conference held by the health and health commission that in 2018, the State Council decided to implement zero tariff on imported anti-cancer drugs We launched special negotiations on the access of anti-cancer drugs to medical insurance, and added 17 new anti-cancer drugs to the medical insurance catalogue, with an average price drop of 56.7% A total of 1714 drugs were cut in price, with an average decrease of 10% In recent years, the State Council and relevant departments have successively deepened the reform of public hospitals, cancelled drug markup, deepened the reform of drug review and approval system, reformed and improved the production, circulation and use of drugs, the "two vote system" for drug procurement in public hospitals, and introduced a series of policy measures such as the supply guarantee and use of generic drugs, the supply guarantee of short drugs and the improvement of the national basic drug system At the same time, around all links of the whole chain of drug research and development, production, circulation and use, the supply side structural reform has been promoted, greatly improving the quality and accessibility of drugs in China, gradually standardizing the order of drug circulation, further reducing the virtual high drug price, reducing the burden of drug use for the masses, and making room for deepening the reform of "cage for bird" and promoting the reform of medical service price 。 Http://news.scienceet.cn/htmlnews/2019/4/425678.shtm a new type of medical robot can navigate autonomously in vivo, US researchers reported in the US journal Science robotics on the 24th that they have developed a micro medical robot that can navigate autonomously around the beating heart, so as to help surgeons complete complex heart operations Research shows that in an animal heart valve repair operation, a machine catheter can accurately find the target position without artificial guidance by using artificial intelligence and other technologies Then, the heart surgeon remotely repaired the leak The robot is equipped with a tactile sensor and a micro camera on the top It can also "sample" continuously like an insect's antennae or a mouse's beard It can use machine learning and image processing technology to identify the type of tissue contacted, the location and the direction of travel in a "strange" dark environment The researchers say the robot can help relieve doctors' fatigue and allow them to focus on more complex operations The researchers hope that in the future, global cooperation will be carried out, data will be collected, algorithms will be continuously trained, and medical robots will become more intelligent Https://robotics.sciencemag.org/content/4/29/eaaw1977 "translate" brain signals into idiomatic sounds, and new technologies are expected to help people with aphasia A team of researchers at the University of California, San Francisco, published online today found that a new technology can synthesize speech based on the detected brain neural signals, which is expected to regain the ability to "speak" autonomously in the future The researchers chose five patients who needed temporary electrodes implanted in the brain for disease treatment but had good language ability to read hundreds of sentences aloud and record the activity of language related areas in their brain during this period Based on these data, the researchers designed a system that can first convert brain nerve signals into virtual vocal tract activities, and finally output voice data The researchers played the synthesized speech of the system to some people, and the results showed that they could recognize most sentences well Researchers are also trying to use higher density electrode array and more advanced artificial intelligence algorithm to further improve the effect of speech synthesis Https://www.nature.com/articles/s41586-019-1119-1 new progress has been made in the study of acid dissociation mechanism of Dahua Institute of Chinese Academy of Sciences Recently, Jiang Ling, researcher of cluster spectrum and dynamics of State Key Laboratory of molecular reaction dynamics, Dalian Institute of chemistry, Chinese Academy of Sciences, and Liu Zhifeng, Professor of Chinese University Hong Kong, have made new progress in the study of acid dissociation mechanism In this work, HSO4 - (H 2O) n was used as a model system, and the kinetic mechanism of acid dissociation was studied by combining molecular dynamics simulation with infrared photodissociation spectroscopy The results show that when n = 12, HSO4 - begins to dissociate partially; when n = 16, HSO4 - has dissociated completely, forming the ion pair clusters of hydrated protons and conjugated bases, i.e (SO42 -) (H3O +) (H2O) n-1; SO42 - and H3O+ The stronger hydrogen bond between the ion pair and the water molecule makes the shell of the solvent more compact, which explains the phenomenon that the S = O stretching vibration is significantly widened in the infrared photodissociation spectrum experiment This study reveals the deep mechanism of acid dissociation at the molecular level and provides a new way to understand the kinetic mechanism of proton transfer and ion pair solvation https://pubs.acs.org.ccindex.cn/doi/10.1021/acs.jpclett.9b00699