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    Home > [quick news] on May 24, 2019, not only human mothers will introduce their sons, but also bonobo mothers will worry about their son's marriage

    [quick news] on May 24, 2019, not only human mothers will introduce their sons, but also bonobo mothers will worry about their son's marriage

    • Last Update: 2019-05-24
    • Source: Internet
    • Author: User
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    Not only human mothers will introduce their sons, but also bonobo mothers worry about their son's marriage Recently, scientists from the Max Planck Institute of Evolutionary Anthropology in Germany found that bonobo mothers will actively increase the chances of male offspring contacting other females, and even "stand guard" for their offspring when they mate The findings are published this week in modern biology Bonobos are close relatives of chimpanzees Previous studies have found that chimpanzee mothers help their sons fight for dominance in the population After observing the wild bonobo populations in the Democratic Republic of Congo and in Ivory Coast, Tanzania, Uganda and other places, the researchers found that the mother of bonobo has a wider control: not only acts as a bodyguard during the mating process of her son, but also hinders other males from trying to mate In the wild population, the male bonobos with higher status tend to maintain their gender advantage, leading to the forced withdrawal of males with lower rank Studies have shown that bonobos with mothers are three times more likely to have offspring than bonobos without mothers However, female offspring of bonobos are not supported by their mothers, which the researchers point out may be because the former tend to form or join new communities In the absence of more offspring, it is a rather direct way to keep the family prosperous to help the male offspring to contact with the opposite sex Https:// (19) 30338-0? Returnurl = HTTPS% 3A% 2F% 2flinkinghub.elsevier.com% 2ffretrieve% 2fpii% 2fs0960982219303380% 3fshowall% 3dtrue from the central government to the local government, the chemical industry is facing the most severe storm of remediation On May 23, 2019, China Chemical Industry Park and Industry Development Forum stated: 80% The above hazardous chemical production enterprises shall complete relocation and transformation by the end of 2020, and the chemical industry park is the main carrier This year, a special working group composed of the Ministry of industry and information technology and other ministries and commissions will promote the evaluation and certification of Chemical Industry Park as an important work, strictly formulate the construction and access standards of chemical industry park, and require the improvement of infrastructure Under this situation, some chemical enterprises will face production reduction or closure, and some will move from the southeast coast to the Midwest and the northeast The whole industrial pattern will change, and the industrial chain may face reshuffle As early as the end of 8, 2017, the general office of the State Council issued the "guidance on promoting the relocation and transformation of hazardous chemical production enterprises in densely populated urban areas", which proposed that by 2025, the existing hazardous chemical production enterprises in densely populated urban areas that do not meet the requirements of safety and health protection distance should meet the local transformation standards, move into the standardized chemical park or close down Among them, small and medium-sized enterprises and large enterprises with major risks and hidden dangers will start relocation and transformation by the end of 2018 and complete by the end of 2020; other large enterprises and large enterprises will start relocation and transformation by the end of 2020 and complete by the end of 2025 Http://dz.jjckb.cn/www/pages/webpage2009/html/2019-05/24/content_.htm - 23 ℃ - the highest critical temperature of superconducting materials can refresh the energy of superconducting materials without loss, but its application is limited due to the strict low temperature requirements of superconducting state Therefore, the realization of room temperature superconductivity has become an important goal for scientists, and now they are getting closer to this goal In the latest issue of nature, a research team composed of scientists from Germany and Germany published a paper saying that their experiments confirmed that lanthanum hydride at high pressure has superconductivity in 250 K (k represents Kelvin in absolute temperature scale, 250 K is about - 23 ℃) However, 250 K is the highest critical temperature in superconducting materials Using a device called a diamond press chamber, the researchers used two diamonds to squeeze a small sample of lanthanum, which was transformed into a lanthanum hydride, lah10, at a high pressure of 170 GPA, and then detected its structure and composition by X-ray They observed that lah10 has zero resistance, the critical temperature will decrease under the action of external magnetic field, and the isotopic effect (the phenomenon that the critical temperature depends on the isotopic mass) However, because the sample size is too small, they could not observe another important feature of superconductor, the Meissner effect (a phenomenon that superconductor repels the magnetic field) They say the three features they have observed have shown that at 250 K, lanthanum hydride can become superconducting at more than a million times the atmospheric pressure of the earth Https:// Suzhou Telecom has joined hands with Suzhou University to build 5g "smart campus" Recently, China Telecom Jiangsu Suzhou Branch and Suzhou University held the 5g campus launch and 360 classroom unveiling ceremony, signed a contract to build "5g campus" Meanwhile, based on 5g and VR / AR technology 360 The classroom has been put into use, which is another new development of the "Suu University in the cloud" built by the school With the advent of artificial intelligence, how will classrooms change in the future? In the era of information explosion, what kind of changes will take place in teaching? In the clinical medicine teaching class of Suzhou University, teachers and students experienced the immersion teaching of 5g + VR technology In this clinical medicine case teaching class, students from the clinical medicine department of Jiangsu University combined with the actual case of a patient with abdominal pain in clinical practice, focusing on the patient's history, etiology of acute abdomen and major differential diagnosis issues Different from the past, 5g and VR technology are introduced in the teaching course, which is used in cooperation with Huawei cloudlink and VR glasses to carry out remote live teaching of surgery Students can easily realize interconnection with expert offices and operating rooms in classroom 360, wearing VR glasses and earphones to experience the operating room environment Online real-time observation of laparoscopic cholecystectomy live in hospital, for questions in the process of learning cases, 5g network can be used to seamlessly connect experts and surgeons for video and voice interaction Http:// plant virus can be used as pesticide "Porter" According to the latest discovery of American researchers, plant virus can be used as nano particle carrier, which can effectively transport pesticides to the deep soil, kill pests harmful to plant roots and reduce the toxicity to the environment This research is helpful to develop high efficiency and little harm to the environment Insecticides are not easy to penetrate into the deep soil, killing pests that harm the plant roots In order to effectively control pests, farmers often spray a lot, resulting in serious pesticide residues in the soil and into the underground water Using nanoparticles to transport pesticides to the deep soil can greatly reduce the amount of pesticides used The researchers explained that this was due to the geometry and surface chemistry of nanoparticles For example, the tubular structure of tobacco light green mosaic virus may partly explain why it goes further than most spherical nanoparticles In addition, its surface chemical properties are more diverse than synthetic particles, resulting in different interactions with soil As for safety, tobacco light green mosaic virus is harmful to tomato, eggplant and other Solanaceae plants, but harmless to many other crops Moreover, the virus can only be transmitted through direct contact with plants, not through the air, so it will not pollute fields outside the spraying range
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