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我国自研核用富集硼酸在“华龙一号”规模化应用
Ke Ji Ri Bao· 2025-10-29 04:54
Core Insights - The successful delivery of domestically developed enriched boric acid to the Guangdong Lufeng Nuclear Power Unit 5 marks a significant breakthrough in the localization of key nuclear materials in China [1][5] - This achievement follows the small-scale demonstration applications at Yangjiang Nuclear Power Unit 3 and Fangchenggang Nuclear Power Unit 4 in November 2024, indicating progress in the supply chain for enriched boric acid [1][5] Industry Summary - Enriched boric acid, produced by isotope separation technology, increases the abundance of boron-10 from less than 20% in natural sources to over 96%, playing a crucial role in controlling the chain reaction in pressurized water reactor cores [4] - The production process of enriched boric acid is complex and has stringent quality standards, leading to a historical reliance on imports, which raised supply chain security concerns as nuclear power construction expanded [4] - Since 2022, the Suzhou Thermal Engineering Research Institute has led a project to develop domestic production of enriched boric acid, overcoming challenges such as high energy consumption and waste generation through innovative separation and recycling techniques [4] - The new production methods have improved isotope separation efficiency by over 20%, reduced impurity content by more than 50%, and achieved a product quality that meets international advanced standards [4] Company Summary - The large-scale delivery of enriched boric acid signifies China's capability to ensure stable supply, reliable quality, and reasonable pricing in the enriched boric acid industry, thereby strengthening the supply chain security for nuclear power development [5]
AG600“鲲龙”圆满完成首次野外环境汲水投水演练
Ke Ji Ri Bao· 2025-10-29 04:53
Core Insights - The AG600 amphibious aircraft successfully completed its first water collection and water dropping exercise in a wild environment at Songhua Lake, Jilin Province, marking a significant operational milestone for the aircraft [1] - The exercise tested the full system of the AG600, demonstrating its capabilities in firefighting and emergency response [1][2] - The AG600 can carry out water collection and dropping tasks, with a total water dropping capacity of 120 tons over an area exceeding 40,000 square meters [1] Summary by Sections - **Operational Achievement** - The AG600 aircraft took off from Changbai Mountain Airport and flew approximately 190 kilometers to Songhua Lake for the exercise, marking its first operation outside the designated test base [1] - This exercise serves as a comprehensive test of the aircraft's systems and operational readiness [1] - **Regulatory Development** - The first technical specification for large amphibious water collection sites, titled "AG600 Series Aircraft Water Collection Site Requirements," will be published in September 2025, filling a gap in standards both domestically and internationally [2] - The Jilin Provincial Emergency Management Department is organizing site selection for water collection in accordance with these new standards [2] - **Future Prospects** - Three AG600 aircraft have completed production testing and are expected to be delivered within the year [2] - The AG600 "Kunlong" aims to expand its operational footprint and work alongside ground firefighting forces to create a comprehensive forest safety protection network [2]
是彗星还是外星母舰——太阳系第三位星际访客引热议
Ke Ji Ri Bao· 2025-10-29 03:38
Core Insights - The interstellar object 3I/ATLAS has sparked significant interest in both the scientific community and the public due to its unique characteristics and the ongoing debate about its origins [1][2][4] Group 1: Characteristics of 3I/ATLAS - 3I/ATLAS was first detected by NASA's ATLAS system, traveling at an astonishing speed of approximately 210,000 kilometers per hour, and is classified as a comet due to its faint coma and short tail [2] - The estimated diameter of 3I/ATLAS is between 10 to 20 kilometers, making it comparable in size to Manhattan, and its mass is at least 3.3 billion tons, significantly larger than previous interstellar visitors [2] - It is noted for its high activity, releasing about 180 kilograms of dust per second, which is more than double that of the previous interstellar comet 2I/Borisov [2][3] Group 2: Chemical Composition and Observations - Observations have detected glowing nickel vapor in the comet's coma, indicating complex chemical processes at play, with nickel potentially existing in molecular forms rather than through traditional high-temperature vaporization [3] - The chemical composition of 3I/ATLAS is complex, with high levels of carbon dioxide detected, alongside water ice and carbon monoxide, suggesting a variety of frozen materials are being heated [3] Group 3: Scientific Community's Response - The scientific community largely dismisses the theory proposed by Avi Loeb that 3I/ATLAS could be an alien spacecraft, emphasizing that the evidence supports it being a natural celestial body consistent with known comet characteristics [4][5] - NASA has confirmed that 3I/ATLAS poses no threat to Earth and is closely monitoring its trajectory and behavior as it approaches perihelion [5][6]
国家自然科学基金委员会党组召开会议传达学习贯彻党的二十届四中全会精神
Ke Ji Ri Bao· 2025-10-29 03:38
Core Viewpoint - The National Natural Science Foundation Committee emphasizes the importance of technological innovation and self-reliance as outlined in the recent Central Committee meeting, aiming to significantly enhance China's technological independence and strength [1][2]. Group 1: Strategic Direction - The Central Committee's decision highlights the leading role of technological innovation in the 15th Five-Year Plan, with a clear goal of significantly improving the level of technological self-reliance [1]. - The meeting underscores the need for the committee to enhance political, ideological, and action consciousness in supporting modernization through technological advancement [1]. Group 2: Implementation and Action Plan - The committee is urged to take immediate action in organizing and promoting the learning and implementation of the meeting's spirit through various educational and training initiatives [2]. - Emphasis is placed on the need for grassroots party organizations to effectively communicate the meeting's spirit to all members, fostering a strong atmosphere for learning [2]. Group 3: Future Planning and Focus Areas - The committee is tasked with planning the scientific fund's 15th Five-Year Plan and aligning with the national basic research plan, focusing on enhancing funding efficiency and reform [2]. - There is a call for a forward-looking and leading layout in key research areas, encouraging high-risk, high-value basic research to ensure resources are directed towards innovative frontline researchers [2].
固态电池关键材料保持低温原因揭示,有助研发更安全、更高能电池
Ke Ji Ri Bao· 2025-10-29 03:38
Core Insights - LLZTO (Lithium Lanthanum Zirconium Oxide) is identified as a key material for solid-state batteries, maintaining exceptionally low temperatures during operation, making it an ideal candidate for next-generation rechargeable batteries [1][2] - A recent study from the University of California, Riverside, published in the journal PRX Energy, reveals the reasons behind LLZTO's low thermal conductivity, which is crucial for developing safer and higher energy density lithium batteries [1] Group 1 - LLZTO is a ceramic material that serves as a solid electrolyte, providing higher energy density while significantly reducing the risks of overheating and fire [1] - The thermal conductivity of LLZTO is measured at only 1.59 W/m·K, approximately 1/250th that of copper, indicating that low thermal conductivity is an inherent property of the material [1] - The research utilized floating zone method to grow LLZTO single crystals, which reflect the intrinsic properties of the material [1] Group 2 - The study found that the presence of numerous optical phonon modes in LLZTO leads to interactions that scatter the primary heat-conducting acoustic phonons, thereby hindering thermal conduction [2] - LLZTO exhibits significant "anharmonicity," which relates to the degree of deviation of atomic vibrations from ideal states, associated with the movement of mobile ions within the material [2] - Understanding how LLZTO naturally impedes heat flow is essential for managing internal temperature variations in solid-state batteries, thereby enhancing safety and performance [2]
资源化利用二氧化碳有了新“膜”法
Ke Ji Ri Bao· 2025-10-29 03:38
Core Insights - The research team at Nankai University has made significant advancements in the field of acidic membrane electrode electrocatalytic carbon dioxide reduction by innovatively using porous membranes instead of traditional ion exchange membranes, achieving high selectivity and long-term stability in CO2 conversion [1][2] Group 1: Research Findings - The new porous membrane system demonstrated a Faradaic efficiency of 85% for carbon monoxide at a current density of 400 mA/cm², significantly higher than the less than 20% efficiency of ion exchange membrane systems [2] - In a continuous operation test lasting 200 hours, the system maintained a nearly 100% proportion of carbon monoxide in the CO2 reduction products, with minimal by-products and no salt precipitation [2] - The technology showed good scalability and industrial application potential, as it remained stable for over 120 hours in a 100 cm² large-scale electrolyzer, with approximately 90% carbon monoxide proportion [2] Group 2: Implications for Industry - The results provide a new membrane usage and design strategy for acidic membrane electrode CO2 reduction electrolyzers, laying the groundwork for the future synthesis of high-value carbon-based fuels and chemicals [2] - The research team aims to further optimize electrode interface design and actively promote the industrialization of CO2 electrolysis technology [2]
我国光刻胶领域研究取得新突破
Ke Ji Ri Bao· 2025-10-29 02:18
Group 1: Lithography Technology and Research Findings - Lithography technology is a core driver for the continuous miniaturization of integrated circuit chip manufacturing processes [1] - A research team led by Professor Peng Hailin from Peking University has utilized cryo-electron tomography to analyze the microscopic three-dimensional structure and entanglement behavior of photoresist molecules in a liquid phase environment [1] - This research has resulted in a significant reduction of lithography defects, which is crucial for improving yield rates in advanced processes below 7nm [1] Group 2: Electronic Chemicals Industry and Conference Announcement - The electronic chemicals industry is highly competitive, with China being the largest manufacturer of electronic products, yet it heavily relies on imports for high-end products [3] - A conference titled "2025 Wet Electronic Chemicals and Electronic Gases High-end Development Conference" is scheduled to be held from November 20-22, 2025, in Fushun County, Sichuan Province [3][5] - The conference aims to enhance the manufacturing level and application of wet electronic chemicals, fostering deep integration of industry, academia, and research [3] Group 3: Conference Agenda and Participation - The conference will feature keynote speeches on topics such as engineering innovation in electronic chemicals, the current state and trends of electronic chemicals for integrated circuits, and the challenges and opportunities in the wet electronic chemicals manufacturing system [5][6] - Participants will include industry experts, production enterprises, and representatives from the electronic gas and packaging sectors [8] - The conference fee is set at 2000 yuan per person, with additional costs for accompanying enterprises [9]
世界城市日中国主场活动开幕
Ke Ji Ri Bao· 2025-10-29 00:47
Core Viewpoint - The 2025 World Cities Day main event in China, held in Chongqing, focuses on the theme "People's City, Smart Future," emphasizing digital empowerment for urban development and sustainable practices [1] Group 1: Urban Development and Policy - The Chinese government adheres to the development philosophy of "People's City built by the people, for the people," viewing cities as organic systems to achieve historical development milestones [1] - Urbanization levels have significantly increased, with the urban population reaching 940 million, and 19 city clusters accommodating 75% of the national population while contributing 85% of the GDP [1] - The number of cities with a GDP exceeding 1 trillion has reached 27, indicating substantial economic growth in urban areas [1] Group 2: Urban Governance and Innovation - There has been a marked improvement in urban planning, construction, and governance, with advancements in scientific, refined, and intelligent urban management [1] - The event also introduced the 2025 edition of the "Shanghai Manual - 21st Century Urban Sustainable Development Guide" and the "Chongqing Initiative" for global urban development [1]
火车“大力士”有了“智慧检修医院”
Ke Ji Ri Bao· 2025-10-29 00:47
在黑龙江省哈尔滨大功率机车检修段组合库内,智能检修机器人"手持"焊枪,在HXN5型机车轴箱 上喷射炽蓝焊焰,15分钟便完成了一组轴箱衬板的更换任务。与人工作业相比,工作时间压缩近一倍。 HXN5型机车功率大,牵引力是普通东风4型机车的两倍,也被称为火车头中的"大力士",主要应 用在我国甘钟铁路、乌准铁路,承担煤炭、矿建等重点物资运输。随着全国煤炭需求量增大,"大力 士"上线率高,使用频繁。为提高"大力士"机车检修效率和标准,中国铁路哈尔滨局集团有限公司日前 为"大力士"配备了"智慧检修医院",推动了一系列智慧检修场景的落地。 车轮"CT": 10分钟检测缺陷 10秒钟判断扭矩是否达标 柴油机的检修质量直接关系到整台机车的运行安全,而连杆螺栓的紧固力矩控制更是关键中的关 键。以往,这项工作依赖人工测量,容易出现力矩不足或过量紧固的情况。小小的螺栓一旦在运行中松 动脱落或折断,就可能导致柴油机出现严重破损。 哈尔滨大功率机车检修段根据和谐型内燃机车检修特点,与设备厂家联合定制柴油机扭矩管理系 统,推动智慧扭矩检修场景落地。 在柴油机组装区,正在对连杆螺栓进行紧固工作的内燃机车钳工李占宇,轻转连杆扳手,电子屏上 便 ...
“机器人总动员”走进现实
Ke Ji Ri Bao· 2025-10-29 00:47
Group 1: Robotics in Food Industry - The application of cooking robots in restaurants allows for the preparation of various dishes in just 3-5 minutes, covering eight major cuisines and enhancing operational efficiency for restaurant owners [2][4] - The "Robot + Recipe Program + Smart Kitchen Management System" model creates a win-win situation for restaurant operators, consumers, and chefs by reducing costs and ensuring fresh meals [2] - A robot bartender can accurately mix drinks by selecting ingredients and performing shaking and stirring tasks, showcasing the versatility of robotics in food service [3] Group 2: Robotics in Agriculture - Robots designed for apple picking can navigate complex environments and accurately harvest fruit, with future models targeting different heights for optimal efficiency [5] - The "Greenhouse Bumblebee" robot mimics the pollination process of bumblebees, achieving a 98% success rate in pollination while reducing costs to 30% of traditional methods [6][7] - The integration of visual recognition and multi-sensor navigation in agricultural robots enhances their functionality and effectiveness in crop management [7] Group 3: Robotics in Healthcare and Elderly Care - The rise in demand for elderly care services has led to the development of rehabilitation robots that assist patients with mobility issues, providing support and promoting muscle memory [8] - Massage therapy robots can automate the massage process, adjusting techniques based on user preferences and body data, thus improving service quality in elderly care [9] - The use of robotics in healthcare settings addresses the challenges of high service costs and low standardization, offering efficient and precise care solutions [8]