[quick news] November 9, 2018 is close to 100%! The luminous efficiency of perovskite LED is a record

Close to 100%! The light efficiency of perovskite based LED has reached a record According to the report on the official website of Cambridge University, the University's research team has integrated the calcium titanium ore layer into the light-emitting diode (LED), and the internal light efficiency of the product is nearly 100%, which can be compared with the best OLED materials It is expected to be used in the fields of display, lighting, communication and next generation solar cells in the future Compared with OLED, which is widely used in high-end consumer electronic products, perovskite LED has lower manufacturing cost and can emit light with high color purity The research team proved that the composite layer formed by perovskite and polymer can achieve higher luminous efficiency, close to the theoretical efficiency limit of OLED film The results were published in the latest issue of nature photonics Https:// commissioned London based shiftlearning research consulting company to conduct a biennial survey of global scientific community pay and job satisfaction From June to July 2018, the research team received 6413 from all over the world 4334 responses from selected readers The satisfaction degree of different scientific professionals is different Respondents who work for non-profit organizations are particularly likely to be satisfied with their work (73%), followed by industry practitioners (71%), government agencies (68%) and academia (67%) This year's survey shows that the balance between academia and industry is slightly skewed towards industry But academic jobs are still popular: 70% of respondents said that at the time of their Ph.D graduation, work within the academic community was their main goal Https:// genomic research reveals the mechanism of health protection of longevity In cooperation with Kong Qingpeng research group of Kunming Institute of zoology, Chinese Academy of Sciences, Zhou Jumin research group and Cai Wangwei, Professor of Hainan Medical College, recently obtained and analyzed the data of peripheral blood leukocyte transcription group of 171 samples from Hainan Changshou family Based on a series of bioinformatics analysis and detection, the research team found that the up regulation of autophagy lysosomal signal pathway gene expression is the most significant signal in centenarians, and the signal also exists in the offspring of longevity stars The research was published in the international journal Genome Research and selected as the cover article of the 11th issue of the journal The research not only reveals the protection mechanism of human health aging, but also provides a new perspective and strategy for delaying aging and improving the health of the elderly Https://genome.cshlp.org/content/28/11/1601 machine learning can achieve accurate and template free crispr-cas9 editing British Nature magazine published an artificial intelligence and biotechnology research online on the 8th: scientists reported a method to achieve accurate and predictable editing of pathogenic gene variation through machine learning This result provides new possibilities for the study of genetic diseases and the development of potential therapies Crispr-cas9 genome editors often use DNA "templates" to ensure the accuracy of DNA repair, or to import specific DNA sequences into the genome Therefore, DNA repair without these templates is often considered inaccurate Using a database containing nearly 2000 pairs of cas9 guide RNA (gRNA) and human DNA targets, the research team of bregen and women's Hospital and Harvard Medical School in the United States trained a machine learning model named indelphi to achieve accurate editing without template crispr-cas9 Https://ාauth-10 should driverless cars be allowed on sidewalks? According to foreign media reports, a new regulation called "digital highway rules" is being developed to allow autopilot to break through speed limits or install road margins to avoid accidents Within the legal framework, if the driverless car accelerates or causes fatal accidents without proper reasons, the car manufacturer may be punished Therefore, in the official review launched yesterday, a key question is discussed: whether an autopilot should be allowed to violate rules to gain greater benefits, just like a human driver https://