[quick news] the fire at Notre Dame in Paris on April 16, 2019 has a "potential connection" with a $6.8 million renovation project

The fire at Notre Dame in Paris has a "potential connection" with a renovation project costing us $6.8 million On April 15, at around 6:50 p.m local time, there was a serious fire at Notre Dame in France After the fire broke out in Notre Dame, when firefighters arrived at the scene, the huge flame turned the sky of Paris into an orange sea of smoke The whole Paris was shrouded in smoke, and scattered ashes filled the surrounding area of Notre Dame Two towers of Notre Dame in Paris have been preserved and one firefighter has been seriously injured Firefighters have successfully stopped the spread of fire to the north tower bell tower, but two-thirds of the roof has been damaged Firefighters will continue to work all night to cool the structure, the Paris fire command said According to an investigation by the Paris prosecutor's office, it was determined that the fire was an accident Previously, police said the accident may have "potential connection" with a $6.8 million renovation project, and the Paris prosecutor's office ruled out the possibility of arson and terrorist attacks, the specific reason is still under investigation Http:// ten people were killed and 12 injured in the accident of shandongyi pharmaceutical factory 15 days ago The basement of the freeze-drying workshop of Qilu Tianhe Huishi Pharmaceutical Co., Ltd occurred in the process of pipeline reconstruction Up to now, 10 people have died and 12 people have been injured At 15:37 on the same day, in the basement of the freeze-drying workshop of qiluitian and Huishi Pharmaceutical Co., Ltd., in the process of pipeline reconstruction, the low-temperature heat-transfer medium was ignited by electric welding sparks, resulting in smog, resulting in the asphyxiation and death of 8 of the 10 on-site workers, and the other 2 workers in the rescue process Another 12 rescuers were choked, not life-threatening According to the inspection of the environmental protection department, the accident has no impact on the surrounding environment Http:// impact factors are still widely used in academic evaluation Recently, a survey published in nature found that 40% of research universities in North America will consider the impact factors of journals when deciding who to promote The survey analyzed more than 800 documents from 129 universities in the United States and Canada The results show that about 40% of research institutions mention the influencing factors in the documents related to employee evaluation, promotion and life-long position evaluation These data show that many universities are using a widely criticized as crude and misleading indicator to assess the quality and performance of scientists' work Elizabeth Gadd, head of research policy at Loughborough University in the UK, said: "this shows that these institutions may not have considered carefully what kind of employees they want." Journal impact factors measure the average number of citations of articles published in a particular journal over the past two years Publishers often promote this number to reflect the quality of the journal At the same time, many scholars and review teams have used impact factors as a quick way to judge the quality, importance and reputation of a research, or to evaluate the scientists who published the research Https:// "soft robot" for assembling life like organisms with DNA molecules for new research (deoxyribonucleic acid) is a kind of life like "soft robot" composed of materials It can realize its own motion by its own metabolism It is expected to be used in the development of biochips in the future Research shows that this "soft robot" has proliferating tens of millions of times from DNA molecules with only 55 nucleotides, forming a few millimeter long DNA hydrogels In the reaction solution, the first end of the colloid grows and the last end of the colloid degrades, so as to obtain the power, which can move against the current like slime bacteria The researchers also asked different "soft robots" to "race" and one of them would win because of the randomness of the environment They are also developing life-like materials that respond specifically to external stimuli, such as light or food In the future, this "life like system" is expected to be used to develop biochips for gene detection and cell-free systems for the production of active proteins Http:// synthesis of the most stable new covalent organic skeleton materials from Jilin University Recently, Fang qianrong, a professor of the State Key Laboratory of inorganic synthesis and preparation chemistry of Jilin University, used solvothermal method to synthesize a new covalent organic skeleton material with high stability The relevant research results were published in nature chemistry The researchers used high temperature solvothermal method to mix the milled small molecular precursors (o-diphenol monomers and o-difluorobenzene monomers) with the reaction solvent and catalyst, and in the alkaline condition, they stood in the 80 degree sealed glass tube for three days Finally, a new type of crystalline organic polymer was obtained in a slightly soluble state Fang said that the new material has high crystallinity and rich pore structure, and can maintain stability under extreme conditions such as boiling water, strong acid, strong alkali, strong oxidant and strong reducing agent It is more stable than all known crystalline porous materials, including metal organic framework materials, molecular sieves and so on https://#Sec29