Ke Ji Ri Bao
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世界首台催化转化制备生物炭大型炭化釜投运
Ke Ji Ri Bao· 2025-11-25 00:06
Core Insights - The world's first large-scale catalytic conversion biochar production kiln has been successfully put into operation in Anhui Province, marking a new phase in the efficient and high-value utilization of biomass in China [1][2] - The new technology developed by the research team significantly improves biochar conversion rates and reduces production costs while ensuring zero pollution emissions during the production process [1] Group 1: Technology and Innovation - The kiln utilizes a proprietary biomass catalytic conversion technology that allows for biochar production at a lower temperature of 220 degrees Celsius and a conversion time of only 30 minutes, achieving a conversion rate of 78% [1] - This fourth-generation device has a reaction chamber volume of 50 cubic meters and can process 10 to 15 tons of biomass per batch, showcasing its scalability and efficiency [1] Group 2: Market Implications - The development of this technology is crucial for China's energy strategy and achieving the country's dual carbon goals, given the abundant biomass resources available in the country [2] - The biochar produced can be further processed into high-purity graphite and high-energy-density lithium battery anodes, indicating potential for high-value carbon-based new materials [2]
全球首台商用超临界二氧化碳发电机组并网调试
Ke Ji Ri Bao· 2025-11-25 00:06
记者了解到,经过10余年持续攻关,核动力院构建了超临界二氧化碳发电技术的产学研体系,形成了一 条完整的全国产化产业链。2019年10月,核动力院实现了全球首次实验室超临界二氧化碳满功率稳定发 电。 据悉,该项目是核动力院与济钢集团国际工程技术有限公司共同推进的全球首套2×15兆瓦超临界二氧 化碳烧结余热发电示范工程。2023年10月,该示范工程建设启动,推动了烧结余热利用领域技术革新。 项目成功发电后,余热利用率将比现役烧结余热蒸汽发电技术提升50%以上。 科技日报讯(记者吴叶凡)记者11月20日从中核集团中国核动力研究设计院(以下简称"核动力院")获 悉,全球首台商用超临界二氧化碳发电机组日前在贵州六盘水首钢水城钢铁(集团)有限责任公司顺利 完成并网调试,为后续机组的满功率运行奠定基础。 生活中的电70%以上来自于传统的蒸汽发电技术,但水工质在系统复杂度、效率、紧凑性、响应速度等 方面存在不足。超临界是物质的一种特殊状态,当二氧化碳被加压至7.38兆帕、加热至31℃时,会进入 超越气态和液态物质特性的"超临界态",兼具高密度和低粘度的双重优势。超临界二氧化碳发电技术, 就是以超临界态的二氧化碳作为能量传递和 ...
新发现首次揭示溃疡性结肠炎致病原因
Ke Ji Ri Bao· 2025-11-24 23:05
溃疡性结肠炎因反复发作,甚至终身不愈,是全球公认的难治性疾病,目前全球患者已达500万至1000 万,约四分之一的重症患者最终不得不切除结肠以缓解症状。近日,南京大学医学院朱敏生教授团队在 溃疡性结肠炎的病因研究中,首次证实该疾病是由一种气单胞菌新亚种MTB感染所致。该菌通过分泌 气溶素毒素,选择性破坏肠道巨噬细胞屏障,导致肠道对炎症高度敏感,从而诱发肠炎。这一发现为攻 克溃疡性结肠炎提供了关键科学依据。论文日前发表于国际学术期刊《科学》。 溃疡性结肠炎的显著特征是肠道黏膜屏障破坏,但导致肠黏膜破坏的原因目前尚不清楚。"如果能找到 肠黏膜破坏的'起始事件',就有可能找到病因。"朱敏生介绍,团队通过对患有溃疡性结肠炎的肠组织 观察研究后发现,肠黏膜巨噬细胞屏障在炎症出现之前就已经缺失,这意味着巨噬细胞屏障破坏可能是 诱发肠炎的"起始事件"。 随后,团队通过化学法清除动物的结肠巨噬细胞,发现动物并不发生肠炎,但结肠巨噬细胞轻度损伤 后,动物发生严重的腹泻、便血、免疫学改变等溃疡性结肠炎的典型表现。这进一步证明,巨噬细胞屏 障破坏是肠黏膜破坏的"起始事件",可导致肠炎敏感性显著提高。 是什么原因诱发了"起始事件"? ...
热点回应丨卫星物联网业务商用试验启动 补齐低空通信短板 拓展万物互联空间
Ke Ji Ri Bao· 2025-11-24 12:25
Core Viewpoint - The Ministry of Industry and Information Technology of China has officially launched a two-year commercial trial for satellite IoT services, aiming to enhance the satellite communication market, stimulate market vitality, and support the development of emerging industries such as commercial aerospace and low-altitude economy [1] Group 1: Understanding Satellite IoT - Satellite IoT utilizes satellite communication technology to connect a vast number of IoT devices across land, sea, and air, providing data collection and transmission services [1] - It offers wide-area IoT connectivity for various terminals, including data collection terminals, wearable devices, handheld terminals, and transportation tools like cars, ships, and aircraft, covering applications in marine fisheries, transportation logistics, energy and water resources, emergency communication, low-altitude economy, and industrial internet [1] - Satellite IoT features full-area coverage, addressing the limitations of traditional terrestrial networks that cannot reach remote areas, skies, and oceans [1] Group 2: Role in Emerging Industries - Satellite IoT can achieve global real-time tracking and data transmission for low-altitude aircraft, effectively addressing communication gaps in the low-altitude economy [1] - In low-altitude fields such as drone logistics, satellite IoT can prevent signal interruptions that affect flight safety and efficiency due to insufficient ground station coverage [1] - The technology can enhance the application scenarios in the low-altitude economy, attracting more capital and resources into the sector, and promoting the collaborative development of the drone manufacturing, airspace management, and data service industries [2] Group 3: Future Development of "Internet of Everything" - China's satellite communication development has accelerated, with the Ministry of Industry and Information Technology releasing guidelines to optimize business access and promote the satellite communication industry [3] - Major telecom companies, including China Telecom, China Mobile, and China Unicom, have obtained satellite mobile communication business licenses, enabling them to conduct satellite direct connection services and enhance applications in emergency communication, maritime communication, and remote area communication [3] - China Telecom has launched a trial for its "Tiantong + Beidou" domestic satellite-based high-precision positioning service, aimed at providing services in areas with no or weak network coverage, such as remote regions, oceans, and low-altitude environments [3]
2025年两院院士增选结果公布!(附名单)
Ke Ji Ri Bao· 2025-11-24 09:57
Core Points - The Chinese Academy of Sciences (CAS) elected 73 new academicians, while the Chinese Academy of Engineering (CAE) elected 71 new academicians, reflecting a significant addition to the academic community [1][2] - The average age of newly elected CAS academicians is 57.2 years, with 67.1% being 60 years old or younger, indicating a younger demographic in the academic leadership [1] - The CAE's new academicians include experts from key national defense and security fields, as well as leading figures from private technology companies like CATL and BYD, highlighting the integration of industry and academia [1][2] Summary by Category Chinese Academy of Sciences (CAS) - 73 new academicians elected across various disciplines: Mathematics and Physics (14), Chemistry (11), Life Sciences and Medicine (13), Earth Sciences (9), Information Technology (11), and Technology Sciences (15) [1] - The total number of CAS academicians now stands at 908 [1] Chinese Academy of Engineering (CAE) - 71 new academicians elected from diverse fields: Mechanical and Transportation Engineering (11), Information and Electronic Engineering (9), Chemical, Metallurgical and Materials Engineering (10), Energy and Mining Engineering (12), Civil, Hydraulic and Architectural Engineering (7), Environmental and Light Textile Engineering (6), Agriculture (8), and Medicine and Health (8) [1] - The total number of CAE academicians has reached 1002 [1] Selection Criteria and Trends - The election process emphasized significant contributions, academic standards, and ethical conduct, focusing on long-term frontline researchers [2] - The selection aimed to address national needs in critical fields, emerging disciplines, and major scientific projects, moving away from traditional evaluation methods [2]
多项重大成果亮相2025量子科技和产业大会
Ke Ji Ri Bao· 2025-11-24 09:57
Core Insights - The 2025 Quantum Technology and Industry Conference opened in Hefei, Anhui, showcasing significant achievements in quantum technology and industry [1] Quantum Technology Achievements - In superconducting quantum computing, "Zuchongzhi 3" set a new record for "quantum computing superiority" - In neutral atom quantum computing, a research team achieved AI-enabled control of a defect-free array of 2,024 atoms - In optical quantum computing, multi-bit continuous variable quantum entanglement was realized on an optical quantum chip for the first time - In quantum communication, a record was set for intercontinental quantum key distribution over 12,900 kilometers - In quantum precision measurement, the search detection limits for new physics were enhanced by 17 orders of magnitude [1] Quantum Industry Developments - China Telecom Group announced the world's largest, interconnected, and widely applicable quantum security infrastructure in the quantum communication field - State Grid Corporation of China launched a series of quantum encryption products aimed at distributed renewable energy - Keda Quantum Technology Co., Ltd. and China Telecom Quantum Group jointly released a superconducting quantum computing system solution designed for a scale of thousands of bits - China Electronics Technology Group Corporation introduced the XS1000 dilution refrigerator for superconducting quantum computers [1] Overall Impact - The concentrated release of these achievements signifies a leap in China's quantum technology across both fundamental research and industrial applications, injecting strong momentum into the economic and social development powered by quantum technology [1]
法拉第效应中光的磁场作用被揭示
Ke Ji Ri Bao· 2025-11-24 09:57
Core Findings - A research team from Hebrew University of Jerusalem published a paper revealing that the magnetic field of light plays a direct role in the Faraday effect, challenging the long-held belief that only the electric field of light is significant [1][2] - The study confirms that the oscillating magnetic field of light directly contributes to the formation of the Faraday effect, indicating that light can influence matter through its magnetic properties [1] Summary by Sections Faraday Effect - The Faraday effect describes the rotation of the polarization direction of light as it passes through a material in a constant magnetic field, first discovered by Michael Faraday in 1845 [1] - Traditionally, this effect has been attributed solely to the interaction between the electric field of light and the internal charges of the material [1] New Findings - The new research highlights the previously overlooked contribution of the magnetic field of light, which has a measurable impact on the Faraday effect [1][2] - The research utilized the Landau-Lifshitz-Gilbert equation to conduct precise calculations, demonstrating that the magnetic field of light can induce magnetic moments within materials, similar to a static magnetic field [1] Experimental Predictions - Calculations indicate that using magnetic materials like gadolinium gallium garnet in repeated Faraday experiments could show that the magnetic contribution of light to the Faraday effect could reach 17% for visible light and up to 70% for infrared light [2] - This suggests that the interaction between light and matter involves both electric and magnetic fields, which have not been fully recognized until now [2] - Igor Rozhansky from the University of Manchester commented that the results are compelling and warrant further experimental verification [2]
锚定国家科技战略的未来航向——2025年两院院士增选深度观察
Ke Ji Ri Bao· 2025-11-24 09:57
Core Points - The Chinese Academy of Sciences and the Chinese Academy of Engineering announced the results of the 2025 academician election, with 73 and 71 academicians elected respectively, further optimizing the structure of the academician team [1] - The election process reflects the real ecology of China's academic community and responds directly to the demand for talent in the current era, serving as a barometer for the future direction of China's scientific and technological strategy [1] Group 1: Election Discipline - The 2025 election has introduced the strictest disciplinary measures to date, including a "silent period" where candidates cannot contact review experts or engage in media promotion to minimize non-academic influences [2][3] - The Chinese Academy of Sciences and the Chinese Academy of Engineering have implemented additional measures to ensure the fairness and integrity of the election process, including prohibiting candidates from engaging in lobbying or informal communications during the election period [2][3] Group 2: Evaluation Reform - The 2023 election marks the first after the deepening of the academician system reform, introducing a mechanism where each academician can recommend one candidate and incorporating external peer evaluations, moving away from a purely internal review process [4] - The evaluation process now emphasizes contributions to scientific problems and industry development, making it more objective and professional [4][6] Group 3: Contribution Orientation - The selection process has shifted to a "contribution-oriented" approach, breaking away from traditional metrics and focusing on the actual impact of candidates' work [5][6] - The age structure of newly elected academicians has been optimized, with a notable trend towards younger candidates, reflecting a commitment to nurturing the next generation of scientific leaders [6] Group 4: National Strategic Needs - The election guidelines emphasize selecting candidates who have made contributions to key areas aligned with national strategic needs, including emerging disciplines and major engineering projects [7][8] - The inclusion of private enterprise scientists in the election marks a significant breakthrough, with specific quotas established to support candidates from leading private technology companies [8]
AI让闲置物品买卖更轻松
Ke Ji Ri Bao· 2025-11-24 08:10
Core Insights - The integration of AI in e-commerce platforms, particularly in the second-hand trading sector, is enhancing efficiency and user experience, allowing for better pricing and targeted recommendations [1][2][4] - AI is positioned to facilitate a circular economy by extending the lifecycle of products and reducing carbon emissions associated with new product manufacturing [2][5] - The introduction of GSID (Global Standard Identifier) is revolutionizing the way non-standardized products are categorized and matched with potential buyers, improving transaction success rates [3] Group 1: AI's Role in E-commerce - AI is providing precise pricing suggestions based on various factors such as product condition and market trends, which is particularly beneficial for non-standardized second-hand goods [1] - The use of AI in identifying and structuring product information through GSID enhances the matching efficiency between buyers and sellers, especially for niche products [3] - AI capabilities are being expanded to cover the entire transaction process, including pre-sale credit scoring, in-sale AI services, and post-sale dispute resolution [5] Group 2: Environmental Impact and Sustainability - The use of second-hand trading platforms like Xianyu has led to a significant reduction in carbon emissions, with users reportedly reducing carbon output by 11.8 million tons over the past year [2] - The challenge remains in encouraging widespread participation in the circular economy due to the non-standard nature of products and the lack of expertise among casual sellers [2] - AI is seen as a key enabler in overcoming these structural barriers, making it easier for users to engage in sustainable practices [2][4] Group 3: Enhancing Consumer Experience - The application of AI in consumer interactions is evolving, focusing on precision, depth, and interactivity, which enhances the overall shopping experience [4] - AI-driven features such as photo recognition for product recommendations are making the shopping process more intuitive and user-friendly [4] - The ultimate goal is to create a platform driven by super-intelligent agents that facilitate seamless transactions, allowing users to participate in the circular economy with minimal effort [5]
云南绿色能源装机规模位居全国第一
Ke Ji Ri Bao· 2025-11-24 08:04
其中,光伏、风电等新能源开发加力提速,在云南成为仅次于水电的第二大电源。同时,云南持续实 施"西电东送",有力支持东部地区经济社会发展和节能减排。 "十四五"以来,云南新能源装机规模从不足1300万千瓦跃升至6900万千瓦,增长了约4倍,占云南总装 机比例超过四成。 当前,云南已基本建成国家清洁能源基地,正全力推动"水火风光储"多能协同和"源网荷储"一体化发 展。 目前,云南省发电装机累计已超过1.68亿千瓦,其中绿色能源装机超九成,支撑绿色铝、硅光伏、新能 源电池等新兴产业迅速崛起。截至今年10月,云南绿色能源装机超1.53亿千瓦,装机规模全国第一。 ...