[quick news] on March 19, 2019, a new genetic analysis claims to find "Jack the Ripper"

A new genetic analysis claims to have found Jack the Ripper Forensic scientists say they have finally identified Jack the Ripper More than a century ago, the notorious serial killer committed a series of terrorist cases on the streets of London, England Gene tests released last week showed that Aaron kosminski, a 23-year-old Polish barber, was Jack the Ripper and the main suspect of the police at the time The new findings come from a forensic examination of a shawl Investigators say the shawl was found in 1888 next to the dismembered body of Catherine eddowes, the fourth victim of Jack the Ripper The spots on the shawl are said to be a mixture of blood and semen, which is believed to have been left by the murderer The new paper expounds this conclusion to a certain extent Louhelainen and his colleague David Miller, a reproductive and sperm expert at the University of Leeds, said it was "the most systematic and advanced genetic analysis of the murder of Jack the Ripper so far" and described the process of extracting and amplifying DNA from the Cape Https://onlinelibrary.wiley.com/doi/abs/10.1111/1556-4029.14038 "skinny" will also get fatty liver Experts remind that it is "national liver loving day" to adjust diet and strengthen exercise on the 18th According to recent physical examination data of many hospitals in Zhejiang Province, fatty liver is becoming more and more frequent in the population, and many young people and people who are not fat are constantly recruited Li Ming, a professor of Gastroenterology in the first hospital of Zhejiang University, found in recent years that nearly one-third of Chinese patients with fatty liver have normal body mass index On the one hand, drinking, bad living habits, staying up late, unreasonable diet structure, etc are all high-risk factors for those who are not fat to get fatty liver These factors will lead to the increase of body fat and increase the fat storage Burden Experts said that the treatment of fatty liver mainly through two aspects, one is the intervention and change of living habits, including adjusting the diet structure and strengthening exercise For patients with less serious conditions, timely intervention can achieve the "reversal" of fatty liver Second, there is no specific drug to treat or prevent fatty liver at present It is not necessary to start drug treatment as soon as fatty liver is found out When transaminase abnormality, blood lipid abnormality and blood glucose abnormality occur at the same time, it is necessary to see a doctor in time and take medicine under the guidance of a doctor Http:// Wu Yichan was elected as an academician of the International Academy of nuclear energy A few days ago, John rusat, President of the International Academy of nuclear energy, sent a letter to congratulate Wu Yichan, a researcher of the Institute of nuclear safety technology of the Chinese Academy of Sciences, on his election as an academician of the International Academy of nuclear energy This year, three people were newly elected as academicians of the international nuclear energy academy Wu Yichan is engaged in nuclear neutron physics and technology research, and has made outstanding contributions in basic theory, key technology and engineering application In 2018, he won the European fusion nuclear energy innovation award and the American Nuclear Society fusion nuclear energy outstanding achievement award The total number of members of the International Academy of nuclear energy is limited to 100 They are famous scientists and senior people with experience and knowledge in the field of nuclear energy Http://news.scienceet.cn/sbhtmlnews/2019/3/344363.shtm can humans suffer from "zombie deer" disease? We should avoid contact with infected animals Recently, zombie deer disease has made many people nervous, and some people call it the reality of the movie Busan trip An infectious disease known as "zombie deer" spreads among deer herds in the United States, Canada and other places, the Centers for Disease Control and Prevention said in a statement Zombie deer disease is a chronic wasting disease caused by prions Dong Xiaoping, director of the global public health center of China Center for Disease Control and prevention and deputy director of the State Key Laboratory for infectious disease control and prevention, pointed out that "from the perspective of epidemiology, there is no case of human related to the disease, and there is no data showing that the disease will infect human, or there is no evidence that the disease has the ability to infect human Force " Dong Xiaoping explained that many viruses have a limited host range, and this "species barrier" may depend on whether the host cells have corresponding receptors, such as poliovirus receptors only exist in humans and primates, while other animals have natural species resistance to the virus However, this does not mean that human beings can have a good sleep Animal experiments show that prions causing zombie deer disease may be transmitted to squirrel monkeys, macaques and other animals, so there may be a certain risk of infection to human beings in the future It is suggested that we try to avoid contact with infected animals Http://lxjk.people.cn/n1/2019/0318/c404177-30980388.html graphite alkyne membrane material can realize methanol zero penetration direct methanol fuel cell is considered to be one of the most promising clean and efficient energy cells, in which proton exchange membrane is the core component affecting the energy efficiency and power density of direct methanol fuel cell Recently, Zhao Tianshou, Professor of Hong Kong University of science and technology, found that graphene, a new two-dimensional carbon nano material, is an ideal proton exchange membrane material with high selectivity and conductivity, which can effectively block the penetration of methanol fuel Relevant achievements were published in nature · communication Through atom scale simulation, the researchers analyzed the penetration behavior of protons and methanol molecules at the graphite alkyne interface, and obtained the proton conductivity and methanol permeability The results show that when the pore size of graphene is larger than 1.2 nm, graphene and water form a water vacuum interface, in which the water phase can make the proton conduct rapidly, while the vacuum phase can effectively block the penetration of methanol molecules This finding provides a new possibility for the design of zero permeability proton selective membrane https://