[quick news] on January 13, 2020, Chinese scientists overcome the problem of high-efficiency conversion of methane to methanol

Chinese scientists have overcome the problem of high-efficiency conversion of methane to methanol After more than three years of concentrated research, the research team transformed methane into methanol in a high efficiency at 70 ℃ in a heterogeneous catalyst system, with a conversion rate of 17.3% and methanol selectivity of 92%, the highest level at present It is reported that the research is supported by key projects of NSFC, Youqing project, key R & D plan project of Ministry of science and technology, international cooperation project of shell oil company, etc Http://news.scienceet.cn/htmlnews/2020/1/434687.shtm BCG vaccine's ability to prevent tuberculosis infection enhances a study recently published in the British journal Nature Immunologists point out that changing the dose and injection mode of BCG vaccine can enhance the ability of tuberculosis macaque model to prevent tuberculosis infection Data show that changing intradermal injection to intravenous injection may be particularly beneficial for human adolescents or adults, which may have the strongest impact on reducing the spread of tuberculosis Not only that, they think intravenous injection may also enhance the protective effect of other T cell vaccines used to induce tissue sites BCG is the only approved TB vaccine Http://digitalpaper.stdaily.com/http_ / 13 / content_ HTM? Div = - 1 scientists from Germany's first Institute of renewable energy generation in 2019, the German Solar Energy System Research Institute (ISE) of Fraunhofer, Germany, released the annual research report on electricity production in 2019 The share of renewables in net electricity generation actually delivered to consumers increased from 40.6% in 2018 to 46%, surpassing fossil fuels for the first time (40%) The main reason for the sharp decline of coal power generation in Germany is that the government introduced climate protection policies and coal withdrawal policies, which promoted the "fuel conversion" from lignite to natural gas In addition, the reduction of the overall electricity demand also aggravates the reduction of the electricity price of the exchange and the deterioration of the market situation of lignite Http://digitalpaper.stdaily.com/http_ / 13 / content_ HTM? Div = - 1 the US plans to build a new Collider to explore the "heart" of protons ）Let the high-energy electron beam rush into the proton to explore the "inner" mystery of the proton It is believed that the universe is a quark gluon plasma about one thousandth of a second after the big bang RHIC is a 3.8km-long ring composed of two concentric reverse ring accelerators The lab plans to use one of the rings to accelerate protons and add an electron accelerator to build the EIC Http://digitalpaper.stdaily.com/http_ / 13 / content_ HTM? Div = - 1 research shows that the average temperature drop in the United States is lower than 37 degrees Celsius, according to a recent article published on the website of new scientist, the United Kingdom The average American's temperature drops 0.03 degrees Celsius every decade "The most likely explanation is that in the microbiological sense, we are very different from people in the past," parsonnett said Because of the emergence of vaccines and antibiotics, modern people are less infected with bacteria, so our immune system is not so active, and our body tissues are not easy to become inflamed If so, then in other countries where health has improved, the body temperature should have dropped as well http://