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Background: The issue of euthanasia has always been controversial around the world. At present, China has not implemented euthanasia legislation, but cases of collision are not uncommon.Methods: In order to understand the Chinese public's willingness and perception of euthanasia and the factors that hinder the legalization of euthanasia, the research group conducted a survey in seven provinces and thirteen municipalities from February 2021 to December 2021. We distributed a total of 7,000 questionnaires, and recovered 6,894 valid questionnaires. At the same time, we conducted in-depth interviews with scholars in the field of bioethics, medical workers, and the public. To gain an in-depth understanding of the relevant groups and the general public's about the subjects, 35 interviews were collected.Results: The results showed that, in China, 84.27% of the public were in favor of euthanasia, and the public support was relatively high. At the same time, it showed that of the elderly population was lower than the young ones’; that of the rural population was higher than the urban ones, and that of the terminal ill patients were higher than their relatives. Religious beliefs had little effect on euthanasia willingness.Conclusion: At present, it is immature to implement euthanasia legislation in China, and it still faces challenges from moral, ethical and institutional abuse.

The radome made of C sandwich structure failed after different service time. The failure causes were analyzed by ultrasonic C-scan inspection, fracture surface inspection, section metallographic inspection, bonding strength test, manufacturing process analysis and viscidity testing of film. The results show that: The debonding position of honeycomb composite radome is between honeycomb and outer skin. That is caused by the weak adhesive strength between honeycomb and skin. The main cause of weak adhesion is that the film loses fluidity and viscidity due to the overlong holding time. Weak adhesion is not related to the heating temperature, compressive stress and local honeycomb contamination. The holding time should be controlled to be less than 6h in later manufacture of the radome to keep fluidity and viscidity of film.

The lithology and formation age of basement rocks are significant for the understanding of the nature of basin architecture, evolution and the potential of hydrocarbons of a basin. In this study, the basement lithology of the Cenozoic Yitong Basin is investigated through the petrological analysis of cores, cuttings, and thin sections. The results suggest that the basement rocks of the Yitong Basin are mostly composed of unique igneous rocks that are different from nearby basins&rsquo, sedimentary and metamorphic basement. The igneous rocks are dominated by intrusive monzonite granite and alkali feldspar granite. Additionally, U&ndash, Pb zircon geochronology of basement samples by LA-ICP-MS and the geological interpretation of apparent resistivity data indicate that the igneous basement in major part of the basin was mainly formed by a lateral intrusion of granite into the Permian sedimentary stratum in the Yanshanian period from 177 to 170 Ma. The results also reveal the two-layer basin architecture with coal-bearing Carboniferous&ndash, Permian strata below the igneous basement covered with Tertiary sediments, thus providing a new geologic horizon for deep natural gas exploration in the older coal-bearing sedimentary rocks beneath the current igneous basement.