中国科学院合肥物质科学研究院等离子体物理研究所研究员杨庆喜介绍，杜瓦底座的吊装精度高，表面 水平高差需控制在15毫米以内，落位位置偏差不得超过正负2毫米；作业空间极度狭小，底座外边缘与 主机坑屏蔽墙的最小间隙不足100毫米。面对这些挑战，项目团队连续奋战、攻坚克难，自主研发了专 用吊具系统，通过均衡梁、吊梁、提升适配器及花篮螺丝等组件的协同作用，精细调节吊装水平度。同 时，他们采用多站激光跟踪仪实时监测基准点，动态调整吊装姿态，最终实现杜瓦底座的毫米级精准落 位安装。 杜瓦底座的制造交付和落位装配，为BEST后续核心部件的安装和调试奠定了坚实基础。"接下来， BEST团队将发扬全超导托卡马克大科学团队精神，全力以赴推进装置部件安装工作，确保BEST装置建 设目标按期高质量完成。"杨庆喜表示。 （文章来源：科技日报） 近日，紧凑型聚变能实验装置（BEST）首个关键部件杜瓦底座成功落位装配仪式在安徽省合肥市举 行，标志着BEST项目建设取得关键性突破。 据介绍，杜瓦底座是BEST主机的首个真空大部件，设计工况复杂，接口达数百个。其结构尺寸大，直 径约18米，高度约5米，总重量400余吨，是BEST主机系统中最重的 ...

Core Insights - Industrial tourism is gaining popularity among young people, with significant visitor numbers reported at various factories and museums, indicating a shift in consumer preferences towards immersive experiences [1][2][3] Group 1: Industrial Tourism Growth - Xiaomi's automotive factory has received over 150,000 visitors since opening for tours, averaging over 10,000 visitors per month [1] - Qingdao Beer Museum attracted over 40,000 visitors during the Spring Festival, generating revenue of 4 million yuan from ticket sales and beer consumption [1] - The market share of aerospace and automotive industry tours has exceeded 20%, with several factories ranking among the top five in visitor interest [1] Group 2: Immersive Experiences - Xiaomi's factory features 419 industrial robots and 304 visual systems, creating a comprehensive experience that combines research, production, and deep engagement [2] - Middle school students experienced high-speed train manufacturing at CRRC Changchun Railway Vehicles, enhancing their understanding of engineering principles through real-world applications [3] - The interactive dining experience at the Guangxi Liuzhou Luobawang Industrial Park allows visitors to engage in the cooking process, enhancing their connection to the product [4] Group 3: Policy Support and Future Trends - Beijing is developing themed tourism routes that include industrial tourism, reflecting a growing governmental support for this sector [6] - The trend towards personalized and customized tourism experiences aligns with the preferences of younger consumers, who seek deeper engagement rather than simple sightseeing [6] - Industrial tourism is projected to grow significantly, with estimates suggesting the market could reach over 100 billion yuan by 2030 [10] Group 4: Cultural Integration - Industrial tourism is not merely about visiting factories; it integrates historical narratives and cultural elements, enhancing visitor engagement [9] - The transformation of old industrial sites into cultural hubs, such as the Meitao Bay in Foshan, demonstrates the potential for industrial tourism to foster community and creativity [8] - The development of immersive and interactive projects is essential for transforming industrial sites into culturally attractive destinations [10]

Core Findings - The latest research results from the Chang'e 6 lunar sample indicate that the lunar mantle on the far side of the moon is cooler compared to the near side, contributing to the understanding of the "bipolarity" phenomenon of the moon [1] - The research was a collaborative effort involving the China National Nuclear Corporation, Peking University, and Shandong University, and has been published in the journal Nature Geoscience [1] - The study provides critical scientific data for understanding lunar evolution and the characteristics of the moon's mantle, which is essential for comprehending ancient volcanic activities on the moon [1] Research Methodology - The Chang'e 6 lunar samples were found to be finer and more fragmented compared to those from Chang'e 5, increasing the workload for identifying target minerals [2] - The research team employed multiple analytical techniques to study the basalt samples, including various thermobarometers to calculate the temperature and pressure of basalt formation [2] - The crystallization temperature of the Chang'e 6 basalt samples was determined to be approximately 1100°C, which is about 100°C lower than that of the Chang'e 5 samples from the near side [2] Temperature Analysis - The potential temperature of the lunar mantle on the far side was found to be around 1400°C, which is lower than the 1500°C estimated for the near side [2] - Satellite remote sensing data was used to analyze the surface rock chemical composition, confirming that the potential temperature of the lunar mantle on the far side is approximately 70°C lower than that of the near side, reinforcing the credibility of the research findings [2]

Core Points - The construction of the "Tibet-Guangdong DC Project" has commenced, which is a key cross-provincial power transmission project under China's 14th Five-Year Plan, representing the world's strongest transmission capacity and the largest investment scale in flexible DC transmission technology [1] - The project spans approximately 2,681 kilometers across Tibet, Yunnan, Guangxi, and Guangdong, with a total investment of about 53.2 billion yuan and a rated transmission capacity of 10 million kilowatts [1] - The project aims to convert Tibet's resource advantages into economic benefits by facilitating the transmission of clean energy [1] Technical Challenges and Innovations - The project addresses the challenge of integrating large-scale renewable energy in high-altitude areas by employing domestically developed, world-leading flexible DC transmission technology [2] - The technology allows for flexible scheduling of green electricity from different regions and times, ensuring uninterrupted power supply with a transmission time of just 9 milliseconds from Tibet to Guangdong [2] - The collaboration between Southern Power Grid Company and State Grid Corporation aims to tackle significant technical challenges related to high-altitude DC transmission and the integration of renewable energy into weak grids [2] Research and Development Achievements - The research team has conducted over 3000 discharge tests and completed 114 test groups, yielding valuable data for high-altitude discharge [3] - The development of the world's first energy self-balancing flexible DC converter valve and breakthroughs in ultra-long-distance multi-terminal flexible DC fault crossing have been achieved [3] - The project emphasizes digital transformation, aiming to implement machine-based operations in less populated areas and promote digital design and digital twin technology [3] Future Outlook - The Tibet-Guangdong DC Project is expected to be fully operational by 2029, with an annual transmission capacity of over 43 billion kilowatt-hours of clean energy to the Guangdong-Hong Kong-Macao Greater Bay Area, equivalent to half of the annual output of the Three Gorges Dam [3]

Core Points - The AG600 "Kunlong" amphibious aircraft has successfully completed the assembly and production test flight of its third unit, marking a significant milestone in the project from type certification to small-scale production [2][4] - The AG600 is China's first independently developed large special-purpose aircraft designed to meet urgent needs for forest firefighting and water rescue, and it is the largest civil amphibious aircraft in the world by takeoff weight [4] Summary by Categories Production Milestones - The third unit (1103) of the AG600 has been assembled and has successfully completed its production test flight [2] - The fourth unit (1105) has had its major components delivered to the China Aviation Industry Group's South China branch, indicating progress in the production line [2] Project Significance - The AG600 project represents a critical advancement in China's capabilities for specialized aircraft, particularly for emergency response in forest fires and water rescues [4] - The aircraft's development underscores China's commitment to enhancing its aviation technology and meeting domestic needs for disaster management [4]

"这些被深埋数十年至数百年的'历史遗留汞'一旦被重新激活，便可能进入人类食物链。"论文共同 通讯作者刘茂甸研究员担忧地表示，"拖网船犁过海床时，还可能会加速海床沉积物中历史遗留汞的释 放。" 作者呼吁，人类应重视海洋汞排放问题，落实《水俣公约》，进一步削减燃煤、采矿等汞排放源； 限制拖网作业，设立污染物敏感海洋保护区；携手遏制气候变暖以降低沉积物汞活化速率。 研究团队发现，底层拖网与疏浚作业通过物理搅拌作用每年扰动5000多吨沉积物中的汞，相当于年 埋藏量的4倍以上。在欧洲部分陆架，拖网与疏浚导致的每年大陆架沉积物汞被输运到外海的量甚至已 超过其埋藏量，提示这些海域或从"汞汇"转向"汞源"。这将直接威胁占全球渔业产量80%的陆架生态系 统，并通过海产品消费放大人类健康风险。 "大陆架如同海洋的肾脏，高效滤除了水体中的有毒汞，降低了汞对沿海渔业和人类健康的威 胁。"论文共同通讯作者王学军教授打了个比方，"但我们的拖网捕捞船和疏浚活动正变成摧毁肾脏功能 的'手术刀'。" 同时，气候变暖加剧了沉积物汞的溶解和释放。模型模拟显示，若全球升温1.5—5°C，沉积物汞向 水体的自然释放将在本世纪末加剧6%—21%。海洋变 ...

南一智能公司董事长王亚松在会上表示，希望以本次签约为契机，进一步深化双方协同合作，加快推进 合作项目落地见效，共同提升南A中心对东盟国家企业的吸引力与服务效能，携手探索"政府引导、企 业主导、市场运作"的创新模式，为全国数字经济合作提供"广西样本"。 统信软件总裁刘闻欢表示，双方前期对接密切，已打下坚实的业务协同基础，希望双方以一系列务实举 措，以南A中心为核心，充分整合各方资源，优化合作流程与模式，打造生态合作新范式，提升整体合 作效能与竞争力，推动合作向更深层次、更宽领域发展；积极开拓东盟市场，持续推进人工智能应用深 度融入政企、教育、医疗等千行百业，激发产业集聚效应，为深化中国—东盟数字经济合作贡献更大力 量。 （文章来源：科技日报） 根据协议，双方将充分发挥资源整合、产业运营等核心优势，重点推进中国—东盟人工智能创新合作中 心（以下简称"南A中心"）展示中心及智能工厂战略协同、老挝语等东盟10国 deepin25版本操作系统开 发等合作，助力广西构建"北上广深研发+广西集成+东盟应用"的跨境产业生态，打造成为中国人工智 能企业开拓东盟市场的重要枢纽。 9月28日，统信软件技术有限公司与广西南一智能科技 ...

预制菜不等于不健康，它是快节奏生活的"便捷补充"。只要把食物信息和制作工艺明明白白公示出 来，保障知情权，大部分消费者也能接受。 9月21日，记者从国家市场监督管理总局获悉，针对近期社会广泛关注的预制菜相关话题，国务院 食安办高度重视，已组织多个部门认真研究，加快推进预制菜国家标准制定，大力推广餐饮环节使用预 制菜明示，更好维护消费者知情权和选择权。 预制菜话题之所以能引发社会广泛关注，主要缘于消费者对其品质的担忧。"预制菜能保存超过一 年，肯定加了大量防腐剂""冷冻预制菜加热后，营养物质全没了"……近期，预制菜话题热度居高不 下，有关预制菜保鲜效果和营养价值的流言让不少消费者心存顾虑。 针对这些疑问，科技日报记者近日采访了相关专家，为您一探究竟。 "只有在无法充分杀菌、又不能低温冷冻的食品中，才会使用防腐剂辅助保鲜，比如低糖果脯蜜 饯、低盐酱菜、减盐酱油等需要在室温下存放较长时间的食品。"范志红强调，正规厂商生产的合格预 处理食材和成品预制菜，其保鲜依赖的是杀菌、灭菌工艺和速冻、冷冻条件，而非防腐剂。 营养物质确有流失但非归零 一些网友认为，预制菜经过冷冻、储存、重新加热等环节，食材中的维生素、矿物质等营养 ...

资料显示，野猪曾因数量稀少而被列为北京市一级保护动物。随着北京市生态的恢复，野猪种群在 近几年迅速壮大，曾在密云区、怀柔区的山区出没。不过，此次野猪现身依旧令人惊讶，因为西山国家 森林公园距中心城区非常近，周边有若干居民区。 "野猪在公园出现，属于偶发事件。"西山国家森林公园保卫部负责人刘弋说，野猪主要栖息于山区 森林灌丛、山谷溪流附近，多在晨昏和夜间觅食，白天隐蔽于茂密灌木丛中休息。野猪和游客狭路相逢 的概率并不大。目前，西山国家森林公园已经在野生动物常出没区域设置标示牌，提醒游客注意安全。 公众外出时，如果遇到野猪，需保持冷静，记住"两不要"。第一，不要大声喊叫和用石子、木棍攻 击恐吓野猪，这种做法容易将其激怒，进而引发野猪的袭击行为。第二，不要背对野猪，要面朝它，缓 慢后退到安全区域。 最近，有游客在北京西山国家森林公园发现了野猪，引发关注。 在游客拍下的视频中，一只野猪快速横穿小路，钻进树林。它周身黑色，比较健壮。 如果遇到野猪攻击他人、损坏农作物等情况，在确保自身安全的前提下，可用手机拍下野猪的样 子、数量，记住它所在的位置，并联系景区工作人员。这些信息能帮相关部门快速找到野猪、进行处 置。 相关专 ...

据了解，"三峡领航号"是国内首个入级中国船级社（CCS）的漂浮式风电设施。 原标题：全球首台，完成组装！关键零部件实现100%国产化 编辑：吴思 责编：吴光亮 审核：吴忠兰 "三峡领航号"依托三峡阳江青洲项目开展设计建设。其核心设备——16兆瓦超大容量风力发电机组，叶 轮直径252米，扫风面积约5万平方米，相当于7个标准足球场的面积，建成后年发电量约4465万千瓦 时。 该项目中，研发团队形成系泊聚酯纤维缆、风机齿电系统、动态压载控制系统等研发成果，实现关键零 部件100%国产化，让"三峡领航号"具备绿色、韧性和智慧三大特点，以适应深远海严苛环境。 科技日报消息，10月1日，由三峡集团牵头建设的全球首台16兆瓦漂浮式海上风电成套系统示范应用工 程项目——"三峡领航号"，在广西壮族自治区北海市铁山港区完成一体化组装。这是全球已安装单机容 量最大的漂浮式海上风电系统装备，标志着我国海上风电装备制造业向深远海挺进再迈一步。 ...