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消除“外星母舰”疑云——NASA公布3I/ATLAS彗星最新图像
Ke Ji Ri Bao· 2025-11-24 01:40
Core Insights - The article discusses the recent observations of the interstellar comet 3I/ATLAS, which has sparked curiosity and speculation since its entry into the solar system this summer, traveling at a speed exceeding 240,000 kilometers per hour [2][3] Group 1: Observations and Findings - NASA has released images from multiple spacecraft, confirming that 3I/ATLAS is a typical comet driven by ordinary physical mechanisms, dismissing theories of it being an alien spacecraft [2] - The closest images were captured by the Mars Reconnaissance Orbiter (MRO), showing a blurry white ball composed of dust and ice, with the comet's activity increasing as it approaches the Sun [3] - Data from the James Webb Space Telescope and SPHEREx provided insights into the comet's composition, revealing a significant amount of carbon dioxide and water ice near its nucleus [3] Group 2: Anomalies and Characteristics - Observations indicated unusual phenomena, such as a rapid brightening of the comet as it neared the Sun and the detection of nickel vapor, which is atypical for low-temperature environments [4] - The comet's behavior was reconstructed in three-dimensional space using data from various spacecraft, enhancing the understanding of its characteristics [4] Group 3: Size and Origin - Despite accumulating observations, the exact size of 3I/ATLAS remains uncertain, estimated to be between several hundred meters to a few kilometers in diameter, with its shape obscured by dust [5] - The origin of 3I/ATLAS is challenging to determine, with possibilities suggesting it has been drifting in interstellar space for a long time or may originate from an older stellar system [5] - The comet is expected to come closest to Earth on December 19, at approximately 270 million kilometers away, before it begins to exit the solar system [5]
安徽省蚌埠市: 做强产业集群 营造“材料之都”
Ke Ji Ri Bao· 2025-11-24 01:27
Group 1 - Bengbu has a strong industrial foundation and is recognized as an innovation hub for the glass industry in China, producing the country's thinnest electronic information display glass and hardest high-alumina cover glass [1] - The establishment of the Bengbu Comprehensive Bonded Zone has been approved, providing a core platform for the high-end development of the new materials industry cluster in northern Anhui [1] - The city has positioned the new materials industry as a leading sector, with increasing cluster effects and a vision for becoming a "City of Materials" [1] Group 2 - Anhui Longquan Silicon Materials Co., Ltd. has seen annual capacity growth, with some products achieving the highest market share in their segments, focusing on the R&D and production of HTV silicone rubber nano-reinforcement materials [2] - Yishitong Materials Technology Co., Ltd. is the first Sci-Tech Innovation Board listed company in northern Anhui, specializing in a special coated film that enhances the thermal resistance of lithium battery separators, making it a leading global supplier [2] - Yishitong has increased its R&D investment over 20 times in the past decade, leading to significant breakthroughs and earning accolades such as national manufacturing "single champion" and "specialized and innovative" small giant [2] Group 3 - The new materials industry in Bengbu is rapidly developing, with a focus on specialized "single champions" and "specialized and innovative" small giants driving the industry towards high-end and clustered upgrades [3] - As of now, Bengbu has gathered 411 new materials companies, with an industry scale exceeding 66 billion yuan, forming a collaborative industrial system centered on silicon-based and bio-based new materials [3] - The International New Materials Industry Conference has facilitated international cooperation and attracted 408 project signings with a total investment of 383.909 billion yuan, serving as a strong engine for urban development [3] Group 4 - The city will continue to adhere to the strategy of "intelligent manufacturing and industry-based city," promoting "dual recruitment and project construction" to strengthen the new materials industry cluster [4] - The International New Materials Industry Conference will be a key focus for the city to enhance quality projects and physical workload, aiming to realize the vision of becoming a "Pearl of the Huai River and a City of Intelligent Manufacturing" [4]
荧光传感器实时监测DNA损伤及修复
Ke Ji Ri Bao· 2025-11-24 00:56
荷兰乌得勒支大学研究人员开发出一款全新荧光传感器,可在活细胞乃至活体生物中实时监测DNA损 伤及修复过程,为癌症研究、药物安全测试和衰老生物学等领域提供了重要的新工具。相关成果发表于 新一期《自然·通讯》杂志。 研究人员在秀丽隐杆线虫中验证了该工具的有效性。传感器不仅表现稳定,还捕捉到线虫发育过程中出 现的程序性DNA断裂。这证明,新技术不仅适用于实验室培养细胞,也适用于在活体生物中开展研 究。 该工具的应用潜力远不止于监测损伤修复,还可与其他分子模块自由结合,用于绘制DNA损伤在基因 组中的位置图,或识别损伤区域周围会聚集哪些蛋白质,甚至可通过操纵受损DNA在细胞核内的位 置,研究不同环境对修复效率的影响。 (文章来源:科技日报) 现有的工具,如抗体或纳米抗体,往往会过于紧密地与DNA结合,从而干扰细胞自身的修复机制。而 此次开发的传感器可在不干扰细胞功能的前提下,实时标记受损DNA,并动态呈现修复过程。 该传感器采用来自天然蛋白质的小结构域,可自行结合和脱离损伤位点,能更真实地反映细胞的自然行 为。其原理是在一个源自细胞特定蛋白结构域附加荧光标签,实现对损伤标记的短暂识别。由于这种结 合是温和且可逆的,它 ...
我国“5G+工业互联网”进入规模化应用新阶段
Ke Ji Ri Bao· 2025-11-24 00:56
Core Insights - The 2025 China 5G+ Industrial Internet Conference was held in Wuhan, focusing on the integration of the physical and digital economies through "5G+ Industrial Internet" [1] - The Ministry of Industry and Information Technology plans to implement actions to enhance the integration of industrial internet and artificial intelligence, optimize the industrial internet architecture, and promote the construction of 5G factories [1] Group 1: 5G Integration in Industries - Significant achievements in the automotive sector include the establishment of the first flexible production line for 5G automotive welding, reducing new model production line adjustment time by 90% [2] - Major home appliance manufacturers have deployed 5G-A industrial bases to create world-class 5G-A dark factories [2] - The latest data shows that 5G applications have been integrated into 86 out of 97 categories of the national economy, with over 138,000 cases and 64,000 deployed industry-specific virtual private networks [2] Group 2: Standards and Global Leadership - China has taken the lead in formulating the world's first industrial 5G international standards and has established over 100 national and industry standards [3] - The "5G+ Industrial Internet" is accelerating transformation, enhancing both quality and efficiency in factories [3] Group 3: AI Applications in Industrial Internet - Artificial intelligence is reshaping the entire value chain of enterprises, driving cost reduction and efficiency improvements [4] - Nearly 90% of automotive companies have adopted AI in their operations, with over 65% planning to establish dedicated AI positions [4] - AI technologies are being applied across various industries, including pharmaceuticals, steel, and home appliances, optimizing efficiency and quality [4] Group 4: Future Directions - The Ministry of Industry and Information Technology emphasizes the importance of intelligence, greening, and integration in advancing the industrial internet [5] - Future efforts will focus on deepening the penetration of AI into all operational aspects of enterprises, promoting customized production and precision service models [5]
3D打印新材料可与人体免疫系统兼容
Ke Ji Ri Bao· 2025-11-24 00:56
Core Insights - A research team from the University of Virginia has developed a novel 3D printing material that is compatible with the human immune system, potentially advancing organ transplantation and drug delivery technologies [1][2] - The breakthrough involves modifying the properties of polyethylene glycol (PEG) to create a stretchable network structure, overcoming limitations of traditional PEG production methods [1] Group 1: Material Development - The team utilized a "foldable bottle brush" structure to enhance the strength and elasticity of PEG, allowing for the creation of highly stretchable 3D printable hydrogels and solvent-free elastomers [1][2] - By exposing the precursor mixture to ultraviolet light, the team successfully initiated polymerization to form the bottle brush network structure [1] Group 2: Applications and Future Prospects - The new material's compatibility with biological tissues has been confirmed through cell culture tests, indicating its suitability for in vivo applications such as organ scaffolds [2] - The material shows promise for use in solid-state battery technology, exhibiting higher conductivity and stretchability compared to existing solid polymer electrolytes [2] - Future exploration will focus on combining this material with others to create 3D printed products with varying chemical compositions, expanding its application range [2] Group 3: Industry Implications - The advancement in 3D printing biomaterials represents a transformative potential for regenerative medicine, particularly in organ transplantation [3] - The new material addresses challenges related to immune compatibility, which traditional implants often face, thereby paving the way for personalized regenerative treatments [3]
当前流感仍处于季节性流行水平
Ke Ji Ri Bao· 2025-11-24 00:56
Group 1 - The emergence of a new variant K sub-branch of the H3N2 influenza virus is leading to a more severe flu season in some countries [1] - In China, H3N2 is the dominant strain, with 3362 out of 3439 positive samples in southern provinces and 3535 out of 3563 in northern provinces being H3N2 [1] - Current flu activity is at a seasonal level, and there are no new infectious diseases caused by unknown pathogens detected [1] Group 2 - The national flu center's antigenic analysis shows that 43.6% of H3N2 strains are similar to the WHO-recommended vaccine component, indicating high vaccine match [2] - The flu vaccine covers multiple subtypes, and it is recommended to get vaccinated early to reduce the risk of infection and severe illness [2] - The flu activity in China is rising rapidly, with many provinces reaching moderate to high epidemic levels, particularly among children aged 5-14 [3] Group 3 - Misconceptions about treating flu symptoms, such as the rush to reduce fever, can hinder proper diagnosis and treatment [3] - Antibiotics like amoxicillin and cephalosporins are ineffective against viral infections, highlighting the need for targeted treatment [3]
3D打印新材料可与人体免疫系统兼容 有望推动人造器官移植和药物递送技术发展
Ke Ji Ri Bao· 2025-11-24 00:55
Group 1 - A new type of 3D printing material has been developed by a research team from the University of Virginia, which is compatible with the human immune system and has the potential to advance organ transplantation and drug delivery technologies [1][2] - The research team modified the properties of polyethylene glycol (PEG) to create a stretchable network structure, overcoming the limitations of traditional production methods that resulted in weak and crystalline structures [1] - The innovative "foldable bottle brush" structure allows the material to be both strong and highly elastic, enabling the production of 3D printable, highly stretchable PEG-based hydrogels and solvent-free elastomers [1] Group 2 - The team indicated that by altering the shape of the UV light, complex structures can be created, opening new possibilities for manufacturing artificial organs or drug delivery systems [2] - The stretchable 3D printed PEG material has been shown to be biocompatible, suitable for in-body applications such as organ scaffolds, as confirmed by cell culture tests [2] - The material may be combined with other substances to produce 3D printed products with varying chemical compositions, showcasing its potential as a high-performance solid electrolyte in advanced battery technologies [2]
我国首个Ⅰ级洁净飞机手术舱建成
Ke Ji Ri Bao· 2025-11-24 00:44
据悉,未来,复旦大学附属眼耳鼻喉科医院将瞄准国内与国际两大医疗需求,推动"飞机医院"服务常态 化。一方面,持续为实施医疗卫生强基工程提供坚实保障,重点聚焦医疗资源薄弱的边远地区,推动专 科优质医疗资源和技术下沉基层;另一方面,持续创新"空中健康丝绸之路"的理念与实践,推动高水 平"中国智造"走出去,为共建"一带一路"国家和人民提供优质高效的医疗服务。 (文章来源:科技日报) 据了解,新版"飞机医院"搭载了移动诊室、综合检查、培训实操、手术准备、手术区等"多功能、快拆 装"移动模块及全国产精密诊疗设备,实现机舱内手术环境洁净化、设备模块化、流程标准化、集成快 速化、质控全程化。 经具备CMA/CNAS资质的第三方机构检测认证,"飞机医院"机舱手术室各项系统运行稳定,关键参数 均符合《医院洁净手术部建筑技术规范》(GB 50333)Ⅰ级洁净手术室要求,已具备开展眼科、耳鼻 喉科等相关专科手术环境保障能力。 记者23日从复旦大学附属五官科医院获悉,"五官健康C909飞机医院"(以下简称"飞机医院")继首飞后 再"升级",成功完成我国首个Ⅰ级洁净飞机手术舱的搭建。目前,"飞机医院"已具备开展眼科、耳鼻喉 科等相关专科 ...
今年前10月国家铁路发送货物33.78亿吨
Ke Ji Ri Bao· 2025-11-24 00:41
Group 1 - The national railway has achieved a record high in cargo transportation, sending 3.378 billion tons from January to October, a year-on-year increase of 3% [1] - Daily loading averages 186,000 cars, reflecting a 4% increase year-on-year, supporting lower logistics costs and stable economic operations [1] - The railway sector is optimizing product supply by developing intercity express trains, bulk direct trains, specialized logistics, and cold chain logistics to meet diverse transportation needs [1] Group 2 - The railway has completed the transportation of 1,425.8 million standard containers through intermodal rail-water transport, marking a 16.2% year-on-year increase [1] - Cross-border cargo transport remains stable, with 28,000 China-Europe (Asia) trains operated, a 7.8% increase year-on-year, and 4.52 million tons of goods sent via the China-Laos railway, a 14% increase [1] - The Western Land-Sea New Corridor has sent 1.2 million standard containers, a significant 64% increase year-on-year, enhancing international trade [1] Group 3 - The railway sector has effectively ensured the transportation of key materials, including construction materials and smelting goods, by organizing the transport of essential goods like grain from Northeast China and coal from Xinjiang [2] - A green channel has been established to ensure efficient delivery, with coal transportation reaching 1.732 billion tons, including 1.178 billion tons of electricity coal [2] - The transportation of smelting materials and grain has seen year-on-year increases of 9.1% and 13.8%, respectively [2]
中国在全球汽车供应链中的地位快速提升
Ke Ji Ri Bao· 2025-11-24 00:40
Core Insights - China's role in the global automotive supply chain is becoming increasingly prominent, particularly in key component areas where it has established itself as a center for incremental supply chain growth [1][3] - The latest data indicates that China's power battery installation accounts for nearly 70% of the global total, maintaining a leading position for several consecutive years [1] - The automotive industry is undergoing unprecedented transformation, with a focus on reconstructing an open, resilient, and sustainable supply chain system [1] Group 1: Key Components and Challenges - Power batteries, chips, and software are becoming focal points of global competition within the automotive supply chain [2] - Despite China's scale advantage in the power battery sector, challenges arise from upstream resource monopolies and rapid technological iterations [2] - The domestic automotive chip industry is rapidly emerging, with companies like Horizon and Huawei becoming significant players in automotive computing chips, although the self-sufficiency of smaller chips needs to accelerate [2] Group 2: Future Projections and Strategies - By the end of the 14th Five-Year Plan, China's annual automotive production is expected to reach 40 million units, with domestic sales around 27 to 28 million units and overseas sales exceeding 12 million units, accounting for approximately 45% of the global total [3] - The proportion of Chinese components used in vehicles, referred to as "Chinese content," is anticipated to continuously increase, regardless of the vehicle's production location [3] - Recommendations for building an open and resilient supply chain ecosystem include promoting vehicle platform and supply chain combinations, creating a flexible supply chain network that supports both global collaboration and regional autonomy, and integrating core technologies through joint ventures [2]