Workflow
Ke Ji Ri Bao
icon
Search documents
“光泳”飞行器无需燃料即可在大气层漂浮 开辟气候监测和火星探索新途径
Ke Ji Ri Bao· 2025-08-14 00:00
Group 1 - The article discusses a new type of "light propulsion" flying device, which is a small solar-powered floating apparatus capable of carrying instruments at high altitudes in the atmosphere, paving the way for future climate monitoring and Mars exploration [1][2] - "Light propulsion" generates motion by heating particles suspended in a gas or liquid with light, a principle known for over a century, but practical applications have only recently been explored [1] - A research team from Harvard University designed a new flying structure made of two thin, porous membranes connected by tiny vertical supports, optimizing "light propulsion" through computer modeling and laboratory experiments [1] Group 2 - The research highlights the potential of "light propulsion" devices as tools for monitoring Earth's atmosphere and exploring other planets, with significant advantages in size, weight, and power consumption compared to traditional satellites [2] - Future designs of these devices could include navigation systems, increased payload capacity, and longer operational durations, enabling them to perform larger-scale tasks [2]
科学家实现最强声子干涉效应 有望推动分子级传感、量子计算等前沿领域应用
Ke Ji Ri Bao· 2025-08-13 23:56
Group 1 - A recent study led by a team from Rice University has achieved the strongest phonon interference effect in silicon carbide systems to date, known as "Fano resonance," with an intensity two orders of magnitude higher than previously reported [1] - This phonon-based technology is expected to advance molecular-level sensing technology and open new application pathways in energy harvesting, thermal management, and quantum computing [1] - The breakthrough relies on constructing a two-dimensional metallic interface on a silicon carbide substrate, significantly enhancing the interference effect of different vibration modes within silicon carbide [1] Group 2 - The interference sensitivity is high enough to detect single molecules without the need for chemical labels, and the device is simple and scalable, promising applications in quantum sensing and next-generation molecular detection [2] - In low-temperature experiments, the team confirmed that this effect is entirely due to phonon interactions rather than electronic effects, making this "pure phonon" quantum interference rare and specific to the two-dimensional metal/silicon carbide system [2]
新设计使锂电池续航能力提升2—3倍
Ke Ji Ri Bao· 2025-08-13 23:46
Core Insights - Tianjin University has introduced a groundbreaking "de-localized" electrolyte design concept, achieving energy densities of over 600 Wh/kg for pouch cells and 480 Wh/kg for module batteries, significantly enhancing energy density and endurance by 2-3 times compared to existing commercial lithium batteries [1] - The new lithium metal battery technology addresses the global challenge of balancing high energy output with long cycle life, which has been a major limitation in the industry [1] - The innovative electrolyte design enhances the stability of the electrode/electrolyte interface, providing substantial potential for performance breakthroughs in battery technology [1] Industry Developments - The research team is actively promoting the technical transformation and application verification of their findings, having established a pilot production line for high-energy lithium metal batteries [2] - The developed products have been successfully integrated into three models of micro all-electric unmanned aerial vehicles in China, resulting in a 2.8 times increase in flight endurance [2]
卫星互联网低轨08组卫星发射成功
Ke Ji Ri Bao· 2025-08-13 10:14
Group 1 - The successful launch of the Long March 5B rocket and the Yuan Zheng 2 upper stage took place on August 13, 2023, at 14:43, sending the low Earth orbit satellite internet group 08 into its designated orbit [1][3] - The Long March 5B rocket is a large cryogenic launch vehicle that builds on the foundation of the Long March 5 rocket, while the Yuan Zheng 2 upper stage is the largest and most powerful conventional liquid upper stage currently available [3] - This mission marks the 588th launch of the Long March series of launch vehicles, showcasing the capabilities of the launch system to execute various orbital missions, including near-Earth and sun-synchronous orbits [3] Group 2 - The launch system supports multiple deployment configurations, including single satellite launches, multiple satellite launches, and constellation deployments, with capabilities for serial, parallel, side-mounted, and combined configurations [3] - The satellite internet low Earth orbit group 08 was developed by the Fifth Academy of China Aerospace Science and Technology Corporation [1]
“基因魔剪”携手AI提升DNA编辑精度
Ke Ji Ri Bao· 2025-08-13 10:00
Core Insights - Scientists from Swiss Federal Institute of Technology Zurich, University of Zurich, and Ghent University have developed an innovative gene editing method that combines advanced "gene scissors" technology with artificial intelligence (AI), significantly enhancing the precision of DNA editing [1][2] - The new AI tool named "Pythia" allows scientists to predict the outcomes of gene editing with unprecedented accuracy, particularly in how cells will repair DNA breaks caused by techniques like CRISPR/Cas9 [1][2] Group 1 - The technology aims to ensure that "gene scissors" do not cause unintended genetic mutations while maintaining overall genomic stability, which is crucial for safe treatments [1] - The AI-guided repair templates have been validated in human cell culture systems, achieving efficient and precise gene editing and foreign gene integration [2] - The method has been tested in various biological models, including African clawed frogs and live mice, successfully editing DNA in non-dividing tissues such as the brain [2] Group 2 - Pythia utilizes identifiable and learnable repair patterns, indicating that DNA repair processes are not random but follow specific rules [2] - The technology can modify single bases or insert foreign genes and can also be used to tag specific proteins, enabling direct observation of protein behavior in healthy and diseased tissues [2] - Its versatility allows application in various cell types, including non-dividing cells like neurons, providing new hope for treating challenging conditions such as neurological diseases [2]
云南文山:新兴产业起势 传统产业蝶变
Ke Ji Ri Bao· 2025-08-13 07:33
Core Insights - Yunnan Province's Wenshan Zhuang and Miao Autonomous Prefecture is recognized as the "Hometown of Sanqi," with a total industrial output value exceeding 40 billion yuan for the Sanqi industry and 83.309 billion yuan for the green aluminum sector [1] - The region has seen significant technological innovation and transformation in both emerging and traditional industries, driven by increased R&D investment and supportive policies [1][2] - In 2023, Wenshan's total R&D expenditure reached 1.41 billion yuan, a 135% increase from 2020, with projections for 2024 indicating a further increase to 2.04 billion yuan, up 3.2% year-on-year [1][2] R&D and Innovation - Wenshan has established 66 high-tech enterprises, a 200% increase since the end of the 13th Five-Year Plan, and aims to reach 76 by 2025 [2] - The region's innovation ecosystem is bolstered by various platforms, including a provincial high-tech industrial development zone and multiple innovation spaces [2][3] - The establishment of research centers and collaboration with universities and research institutions has facilitated the alignment of cutting-edge research with industry needs [3] Talent Development - Wenshan has implemented initiatives like the "Xingwen Talent" program to attract and cultivate talent, resulting in the establishment of 112 provincial and state-level expert workstations [3] - The region has seen the involvement of 1,356 provincial technology specialists and 1,404 "Three Districts" technology talents, enhancing the local workforce's capabilities [3] Industry Impact - The application of technological advancements has led to significant developments in key industries, including the introduction of new Sanqi varieties and the establishment of the largest Sanqi seed resource base in the country [4] - Innovations in agriculture, such as the "Wenlu Rice No. 4" and "Wenmai No. 14," have gained international recognition, showcasing the region's agricultural capabilities [4][5] - The green transformation of the aluminum industry and digital upgrades in traditional crops are expanding the industrial scale and boundaries in Wenshan [5]
从长三角到长江经济带:超级“创共体”来了
Ke Ji Ri Bao· 2025-08-13 07:26
Group 1 - The core viewpoint emphasizes the importance of technological innovation as the primary driver for high-quality development in the Yangtze River Delta and the Yangtze River Economic Belt [1][8] - The Yangtze River Delta has implemented the "Decision on Promoting Collaborative Development of Technological Innovation," marking a new legal phase for regional collaboration in technological innovation [1][8] - The Yangtze River Economic Belt is accelerating its collaborative efforts, with 11 provinces and cities signing a framework agreement to promote cross-regional technological innovation [1][2] Group 2 - The establishment of the Yangtze River Delta National Technology Innovation Center has attracted significant innovation resources, leading to the incubation of over 1,700 enterprises and the implementation of more than 140 major technology projects [5][8] - The collaborative innovation ecosystem in the Yangtze River Delta is exemplified by successful cases such as the Huairui Biotechnology Company, which has become the largest β-alanine production base in China [2][4] - The region's focus on high-quality development is reflected in the establishment of various innovation centers and the promotion of cross-regional cooperation among universities and enterprises [6][9] Group 3 - The Yangtze River Economic Belt is recognized for its significant population and economic scale, accounting for a substantial portion of the national economy [2][8] - The collaborative innovation efforts are supported by substantial financial investments, with 1.8 billion yuan from local governments and a total of 11.5 billion yuan in social investments since 2022 [8] - The region aims to enhance its innovation capabilities and efficiency through the integration of resources and the establishment of a robust innovation ecosystem [9]
日本九州大学成功研制中温固体氧化物燃料电池
Ke Ji Ri Bao· 2025-08-13 06:27
这一成果解决了掺杂量与离子传输效率难以兼顾的长期难题,为开发低成本、低温SOFC提供了新路 径。研究人员表示,这一原理不仅适用于燃料电池,还可推广到低温电解器、氢气泵以及将二氧化碳转 化为有价值化学品的反应器等,有望为氢能普及和减碳带来更广泛影响。(张佳欣) 责任编辑:闫弘旭 研究团队最终发现,将高浓度的钪掺杂到锡酸钡和钛酸钡中,可在300℃条件下实现超过0.01S/cm的质 子电导率,这一数值与传统SOFC电解质在高温运行时的性能相当。 结构分析与分子动力学模拟显示,钪原子会将周围的氧原子连接成"ScO6高速通道",使质子以极低的 迁移势垒快速通过。这条通道宽阔且振动柔和,避免了高掺杂氧化物中常见的质子陷阱。晶格动力学数 据还表明,锡酸钡和钛酸钡的结构比传统SOFC材料更"柔软",可吸收更多钪,从而进一步提升质子传 输性能。 固体氧化物燃料电池(SOFC)因高效率和长寿命而备受关注,但其运行温度通常高达700—800℃,需 使用昂贵的耐高温材料,这制约了其广泛应用。据最新一期《自然·材料》杂志报道,日本九州大学研 究团队研制出可在300℃中温条件下高效运行的新型SOFC,有望推动低成本、低温SOFC的开发, ...
从长三角到长江经济带——超级“创共体”来了
Ke Ji Ri Bao· 2025-08-13 02:50
从长三角三省一市的紧密协同,到长江经济带11省市的携手奋进;从创新共同体的初步探索,到超 级"创共体"的全面崛起……科技创新始终是驱动高质量发展的"第一引擎"。 近日,长三角三省一市颁布《促进长三角科技创新协同发展的决定》,并于9月1日施行。这是全国首次 以科技创新协同发展为主题开展的区域立法,标志着长三角科技创新协同进入法治化新阶段。与此同 时,长江经济带的联动也在加速。 6月,在南京举行的"长三角—长江经济带科技创新圆桌会议"上,11省市科技部门签署了《长三角—长 江经济带联动科技创新引领新质生产力发展合作框架协议》,协同推进跨区域科技产业创新,开展关键 核心技术联合攻关、创新平台共建、科技成果跨区域转化等,为长江经济带发展注入动力。 2023年,在推进长三角一体化发展座谈会上,习近平总书记强调:"长三角区域要加强科技创新和产业 创新跨区域协同。大力推进科技创新,加强科技创新和产业创新深度融合,催生新产业新业态新模式, 拓展发展新空间,培育发展新动能,更好联动长江经济带、辐射全国。" 如今,面对人工智能、集成电路、生物医药等领域的机遇,长江经济带通过顶层设计和机制建设,合力 追"新"逐"质",提升发展"成 ...
伪科普坑农,网络平台难辞其咎
Ke Ji Ri Bao· 2025-08-13 01:21
Core Viewpoint - The article highlights the proliferation of pseudoscientific agricultural advice on short video platforms, which misleads farmers and promotes counterfeit agricultural products under the guise of helping them [1][2]. Group 1: Issues with Pseudoscience in Agriculture - Pseudoscientific claims, such as using beer and salt for farming, are being spread by self-proclaimed experts, exploiting farmers' desire for increased yields [1]. - The lack of proper verification of expert identities and inadequate content moderation on short video platforms contribute to the spread of false agricultural information [2]. Group 2: Responsibilities of Platforms and Regulatory Bodies - Short video platforms must take responsibility by implementing strict verification processes for expert qualifications and enhancing content review to combat harmful agricultural misinformation [2]. - Regulatory authorities should strengthen oversight of agricultural information and enforce penalties on platforms that repeatedly disseminate misleading content [2][3]. Group 3: Solutions for Genuine Agricultural Science - There is a need for both the removal of pseudoscience and the promotion of legitimate agricultural science, including facilitating the involvement of professionals from agricultural institutions on these platforms [2]. - Establishing authoritative channels for farmers to verify agricultural products can help them distinguish between genuine and counterfeit goods [2].