Ke Ji Ri Bao
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科技新观察丨中国“新三样”领跑全球绿色转型
Ke Ji Ri Bao· 2025-05-29 07:53
Core Insights - China ranks first globally in the number of invention patents for electric vehicles, lithium batteries, and solar cells, showcasing its innovation capabilities in these sectors [1] - The export value of China's "new three items" (electric vehicles, lithium batteries, and solar cells) exceeded $47.7 billion from January to April this year, indicating strong market demand and resilience against protectionism [1] - The industry is undergoing quality upgrades, significantly impacting global manufacturing and leading the green transition [1] Group 1: Product and Technology Innovations - CATL, a leading battery manufacturer, recently went public in Hong Kong with an IPO expected to raise $4-5 billion, marking one of the largest IPOs in recent years [2] - The company has invested over 70 billion yuan in R&D over the past decade, with more than 43,000 patents, and has established six R&D centers globally [2] - Innovations in battery technology include the launch of a new battery capable of charging in 5 minutes and achieving a range of 520 kilometers, indicating a significant leap in performance [2][3] Group 2: Industry Growth and Market Dynamics - BYD has become a sales leader in seven countries and regions in Q1, leveraging its extensive database and R&D workforce to drive innovation [3] - Longi Green Energy's factory in Jiaxing has achieved remarkable efficiency, with production lines capable of producing a solar cell every 18 seconds, showcasing advancements in manufacturing technology [6] - The company has improved the efficiency of its solar cells, setting new world records for silicon-based solar cells [6] Group 3: Global Expansion and Competitive Landscape - Changan Automobile has successfully entered the European market, demonstrating the global competitiveness of Chinese automotive brands [8][9] - The company has established a factory in Thailand, marking a significant step in its international expansion strategy [9] - Chinese companies are increasingly focusing on high-value technology and innovation rather than price competition, enhancing their global market position [10] Group 4: Future Outlook and Strategic Positioning - The Chinese "new three items" are positioned to lead the global green transition, supported by technological breakthroughs and favorable policies [11] - The integration of AI, big data, and digital technologies is accelerating the transformation of the electric vehicle industry, contributing to its growth [8] - China's share of the global market for new energy passenger vehicles has risen to 67.7%, indicating its leadership in the green mobility sector [10]
世界最大跨度公铁两用大桥首节钢梁成功架设
Ke Ji Ri Bao· 2025-05-29 06:17
Core Points - The Xiangmen Railway's Xihoumen Bridge is a significant infrastructure project, marking the successful installation of the world's widest segment steel beam, measuring 68 meters wide, indicating progress from foundation work to superstructure construction [1][3] Group 1: Project Overview - The Xihoumen Bridge is a public-railway dual-use bridge, part of the Ningbo-Zhoushan Railway and Ningbo-Zhoushan Expressway, connecting Jintang Island and Cezi Island [3][5] - The bridge spans 3,118 meters, with a main span of 1,488 meters, utilizing a cable-stayed and suspension system [3] - The design incorporates a "public-railway flat layer" to minimize wind resistance, and features a three-box separation main beam structure for enhanced wind stability [3] Group 2: Construction Details - The segment steel beam installed weighs 979 tons, with auxiliary lifting equipment adding another 1,600 tons, equivalent to over 1,000 small cars [4] - The bridge's construction involves complex steel beam installation plans, requiring three different schemes to adapt to varying support systems, with completion expected by 2027 [4] - Advanced technologies such as BIM, digital twin models, and various sensors are employed for real-time monitoring and management of the construction process [4]
张华:守护城市电力“动脉”
Ke Ji Ri Bao· 2025-05-29 03:57
◎科技日报记者 陈 曦 凌晨2点,初夏的天津街头还有一丝寒意。国网天津电缆公司电缆运检第四中心运检四班班长张华蹲在 地上一动不动,双手用力捂着定点仪的耳机,聆听城市电力"动脉"——电缆的微弱跳动。"故障点找到 了!"张华指着脚下碗口大小的地方说。这样争分夺秒排查故障的场景,对张华来说已是家常便饭。 从业27年来,张华用一身本领、一颗匠心,守护天津7600余公里电缆。他是地下2米工井里的"手术 师",10米高空终端上的"攀登者",更是创新工作室里的"领路人",用汗水与智慧书写新时代产业工人 的奋斗篇章。日前,张华获评2025年全国劳动模范。 练就"绝活中的绝活" 1997年刚入行时,张华就遇到了35千伏电缆剥切难题。这项操作对力度把控要求极高,稍有不慎就会损 伤电缆绝缘层。"力度大了不行,小了也不行。"他回忆道。 为了解决这一难题,张华把退役废旧电缆绑在椅子背上,用手锯、电工刀等工具逐层剥开外护套、铠装 层、内护套、绝缘层,一练就是数月。他用了近百根废弃电缆,磨钝了十多把电工刀,最终熟练掌握了 这项操作。 有了这次经验,张华决心挑战被业内称为"绝活中的绝活"——搪铅。这种金属加工工艺通过控制喷枪火 焰,使铅锡合 ...
去年我国可再生能源新增装机占全球近64%
Ke Ji Ri Bao· 2025-05-29 01:44
Core Insights - The "China Renewable Energy Development Report 2024" indicates that China's renewable energy generation capacity is set to grow significantly, with an addition of 37.4 million kilowatts in 2024, representing a 22% year-on-year increase, and accounting for 86.3% of the country's new power generation capacity [1][2] - China's total renewable energy installed capacity is projected to reach 1.89 billion kilowatts in 2024, making up 56.4% of the total power generation capacity [1][2] - The report highlights that China's renewable energy generation is expected to reach 3.47 trillion kilowatt-hours in 2024, a 17.3% increase year-on-year, which will constitute approximately 35% of the national total power generation [2] Industry Developments - The report emphasizes that China's renewable energy installed capacity growth will account for nearly 64% of the global increase, showcasing the country's leadership in the renewable energy transition [2] - Technological advancements in the industry are notable, with "super-large" wind turbine technology leading globally, featuring onshore units with a maximum capacity of 15 megawatts and offshore units reaching 26 megawatts [2] - The solar photovoltaic sector is entering a phase of larger, higher-power components, with over 80% of installations being string inverters [2] Policy and Market Trends - The National Energy Administration stresses the importance of high-quality development in the renewable energy sector, encouraging the industry to adapt to market-oriented developments and focus on integrated growth [3] - The report indicates a trend towards centralized and large-scale new energy storage stations, with lithium-ion battery storage dominating the market at approximately 96% [2]
守正创新 加快中医药产业现代化
Ke Ji Ri Bao· 2025-05-29 01:12
Core Viewpoint - The modernization of traditional Chinese medicine (TCM) is being driven by technological innovation, aiming to enhance its industrialization and internationalization while preserving its ancient heritage [1][2]. Group 1: Industry Development - Yunnan province possesses over 90% of China's medicinal plant resources, with 25% of the country's major medicinal materials sourced from the region [2]. - The area is projected to reach a medicinal herb planting area of 10.92 million acres by 2024 [2]. - Companies like Yunnan Baiyao and Shenwei Shipuri Pharmaceutical are leveraging modern biotechnology to develop innovative products, filling industry gaps and integrating traditional medicine into modern healthcare [2]. Group 2: Technological Innovation - A comprehensive national survey of medicinal resources has been conducted using advanced technologies, providing a modern scientific basis for TCM theories [3]. - Breakthroughs in various fields such as seed industry, cultivation, drug development, and digital technology are being achieved, transitioning TCM from traditional practices to innovative applications [3]. Group 3: Collaborative Ecosystem - The TCM industry is expected to reach a market size of nearly one trillion yuan by 2025, encompassing various sectors including medicinal materials and proprietary Chinese medicines [4]. - A collaborative innovation system is essential, requiring integration among government, industry, academia, and research to share resources and mitigate risks [4]. - Recommendations include establishing a dynamic monitoring network for medicinal resources and enhancing intellectual property protections to stimulate R&D investments [4]. Group 4: Talent and Policy Support - Yunnan is focused on developing a world-class modern medicinal materials industry, emphasizing research, cultivation, processing, and market development [5]. - The province has optimized its innovation policy environment, providing substantial support for TCM enterprises and attracting high-end talent [6]. - The integration of modern technologies in TCM is expected to significantly contribute to the health initiatives in China [6].
榫卯技艺紧“扣”现代科技
Ke Ji Ri Bao· 2025-05-29 01:12
Core Viewpoint - The article highlights the significance of the traditional Chinese woodworking technique of mortise and tenon (榫卯), showcasing its historical depth, cultural philosophy, and modern applications in creative products [1][3][6]. Group 1: Historical and Cultural Significance - Mortise and tenon is a unique Chinese woodworking method that has been in existence for approximately 7,000 years, originating from the Hemudu culture [3]. - This technique embodies deep cultural and philosophical concepts, particularly the yin-yang philosophy, which is central to ancient Chinese thought [3]. - The craftsmanship involved in mortise and tenon requires high precision, with tolerances as tight as 0.02 millimeters, demonstrating the skill of artisans [3]. Group 2: Modern Applications and Innovations - The technique is being applied in the creation of cultural products, such as the "Human Destiny Community" globe, which is made without nails or glue, using over 60 different mortise and tenon techniques [1][4]. - The production of Wang Erwen toys (鲁班锁 or 孔明锁) showcases the versatility of mortise and tenon, with hundreds of varieties that serve as both educational toys and decorative items [4]. - There is a push to integrate modern technology, such as AI and precision machinery, to enhance production efficiency and appeal to contemporary consumers [5][6]. Group 3: Challenges and Future Directions - The traditional craftsmanship faces challenges in modern markets due to high labor costs and consumer acceptance issues, which hinder the broader adoption of this cultural heritage [5]. - The need for innovative designs that resonate with modern aesthetics and cultural values is emphasized as a way to ensure the survival and relevance of this ancient technique [5][6].
分级评价为全民科学素质精准画像
Ke Ji Ri Bao· 2025-05-29 01:12
5月28日,记者从中国科协获悉,最新调查数据显示,2024年我国具备科学素质的公民比例提升至 15.37%,基本具备科学素质的公民比例已达44.07%,为建立宏大的高素质创新大军进一步夯实劳动力 基础。"这些数据反映了我国在全民科学素质建设上取得的显著成效。"中国科普研究所原党委书记、所 长,中国科学技术大学研究员王挺说。 在人群维度上,分级评价同样发挥着重要作用。调查显示,农村居民和老年人是我国科学素质发展 的短板。在"具备较低科学素质"的人群中,老年群体占据较大比例。王挺表示,这提示我们,在开展科 普工作时,要充分考虑老年人的特点和需求,采用通俗易懂、贴近生活的科普方式,帮助老年人提升科 学素质。 王挺表示,分级评价的结果还能与公民获取科技信息渠道等相关问题进行综合研判。通过分析发 现,不同科学素质层级的人群在获取科技信息的渠道和偏好上存在差异。"具备高阶科学素质"的人群可 能更多通过专业学术期刊、科研机构活动等渠道获取信息;而"具备较低科学素质"的人群可能主要依赖 电视、广播等传统媒体。这为优化科普传播渠道提供了依据,科普工作需要根据不同人群的特点,选择 合适的传播平台和方式,提高科普信息的覆盖面和传播 ...
农科开放日:好看,好吃,好玩
Ke Ji Ri Bao· 2025-05-29 01:12
Group 1 - The seventh Agricultural Science Open Day was held at the Chinese Academy of Agricultural Sciences, focusing on "Agricultural Science Popularization Empowering the Improvement of National Scientific Literacy" [1] - Over 36 affiliated units participated, showcasing cutting-edge technology through exhibitions, laboratory explorations, and interactive experiences [1] - The event attracted more than 4,112 million participants online and offline since its inception in 2019, establishing itself as a brand activity in agricultural science popularization [3] Group 2 - The Plant Protection Research Institute created an immersive experience themed "Biotechnology Assisting Green Control, Plant Protection Forces Safeguarding Food Security," engaging over 300 families [2] - Various interactive games and exhibits were set up, such as the "Agricultural Technology Museum" and "Agricultural Technology Playground," to educate children and families about ecological wisdom and biological genetics [3] - The event featured demonstrations of innovative agricultural technologies, including RNA biopesticides and the effects of viral infections on plants, highlighting advancements in green agriculture [3]
向世界展现中国科技创新的星辰大海
Ke Ji Ri Bao· 2025-05-29 00:46
Group 1: Technological Advancements - The "Fighter" manned submersible, developed under the national key R&D program, is the world's most capable deep-sea manned submersible with the highest number of occupants, fastest descent and ascent speeds, and longest operational time [1] - Over the past five years, the submersible has conducted more than 300 dives and collaborated with four countries on scientific investigations of nine major ocean trenches, collecting environmental data and discovering new deep-sea species [1] - A research team led by a Chinese Academy of Engineering academic has made significant progress in electromagnetic compatibility, transforming it from a perceived "mystical" issue into a scientific discipline [2] Group 2: Innovation and Entrepreneurship - The CEO of a Shanghai-based AI startup aims to break through computational bottlenecks to promote the widespread application of artificial intelligence, achieving significant technological advancements under national support [3] - The company has developed methods to efficiently connect different chips, enabling automated deployment of large models across various hardware, standardizing computational resources [3] Group 3: Education and Talent Development - Emphasis is placed on practical experience in scientific research, with a focus on encouraging students to engage in original innovation and problem-solving in real-world settings [4] - The integration of scientific knowledge and methods into education is highlighted as essential for fostering innovation capabilities among students [4] Group 4: National Goals and Vision - The ongoing development of a technology-driven nation is marked by organized scientific research, which has led to significant advancements in technology and a shift in scientific understanding [6] - The importance of young innovators in the field of artificial intelligence is underscored, with examples of young talents achieving remarkable results [6] - The spirit of "striving for excellence" in manned deep-sea exploration is emphasized, focusing on rigorous, collaborative, and dedicated research efforts [7]
新型燃料电池原型装置获验证
Ke Ji Ri Bao· 2025-05-29 00:41
Group 1 - A breakthrough technology for a new type of battery prototype has been developed, achieving an energy density over three times that of current lithium-ion batteries used in electric vehicles [1] - The new battery is a fuel cell that regenerates energy through fuel supplementation, using liquid sodium metal as a low-cost and abundant material [1][2] - The technology has significant potential for the aviation industry, where increased energy density could enable large-scale practical electric flight [1][3] Group 2 - Current electric aviation requires an energy density of approximately 1000 watt-hours per kilogram, while existing lithium-ion batteries only reach about 300 watt-hours per kilogram [2] - The experimental prototypes have demonstrated an energy density close to 1700 watt-hours per kilogram for a single battery stack, with the entire system averaging over 1000 watt-hours per kilogram [2] - The system could be adapted for various transportation sectors, including maritime and rail, contributing to deep decarbonization in the industry [3]