（原载于《科技日报》 2025-11-06 02版） 在这项研究中，科研人员基于在喜马拉雅东部南迦巴瓦地区新布设的宽频带地震台站数据，首次清 晰刻画了该区域地下结构的特征。他们发现，印度板块地壳与地幔分界的莫霍面自南向北延伸，以较缓 的角度一直俯冲至拉萨地体下方。同时，作为关键构造的"主喜马拉雅逆冲断裂"在这里呈现为一种"斜 坡"形态。应力分析结果表明，该区域地壳正遭受强烈的南北向水平挤压。 "这些发现共同揭示，印度板块的低角度俯冲以及由此引发的地壳强烈缩短挤压，是驱动喜马拉雅 东部地震发生与地表持续抬升的关键因素。"论文第一作者兼通讯作者、中国科学院青藏高原研究所研 究员白玲说。 记者5日从中国科学院青藏高原研究所获悉，基于喜马拉雅山脉东部宽频带地震台站获取的最新数 据，该所科研人员发现，印度板块正以低角度俯冲至青藏高原之下，这一过程强烈挤压地壳，是控制喜 马拉雅东部地震活动和山脉隆升的关键机制。相关研究成果在线发表于《国家科学评论》。 喜马拉雅山脉作为全球最典型的活动造山带之一，其形成与演化一直备受地学界关注。过去研究多 集中于山脉中段，而在喜马拉雅东部，是否存在类似结构、其形态如何，长期缺乏明确认识。 ...

Core Insights - A research team from the Chinese Academy of Sciences, Zijinshan Observatory, and Nanjing University successfully analyzed solar eruption processes using the "Xihe" satellite, providing key insights into the physical processes of solar activity and their spectral characteristics [1][2] Group 1: Research Findings - The study focused on five different types of solar eruption events observed by the "Xihe" satellite in 2024, revealing distinct temporal spectral features associated with various physical processes of solar eruptions [2] - The analysis showed that in the flare region, the spatially integrated Hα spectrum exhibited continuous line center radiation enhancement, spectral line broadening, and red wing asymmetry, corresponding to the chromosphere compression process [2] - The research documented the evolution of solar dark filaments, showing changes in the spatially integrated Hα spectrum from accelerated blue shift absorption to decelerated blue shift absorption, and finally to red shift absorption, capturing the dynamics of cold plasma in dark filaments [2] Group 2: Scientific Significance - The findings highlight the scientific value of the "Xihe" satellite in comparative studies of solar and stellar atmospheric eruption activities, providing a unique opportunity to understand the origins and developments of such phenomena in other star-planet systems [1][2]

5.5亿年前，一些动物在海底沉积物中不经意的三维探索，极有可能导致了第一次埃迪卡拉生物群 灭绝事件的发生。中国科学院南京地质古生物研究所研究人员的一项发现为此提供了线索。在距今约 5.5亿—5.43亿年的湖北宜昌石板滩生物群化石中，研究人员发现了迄今最古老的复杂三维潜穴系统。这 项发现为理解埃迪卡拉纪—寒武纪过渡期间生态系统的重大转型提供了关键行为学证据，相关研究论文 日前发表于国际期刊《科学进展》。 距今约5.39亿年的埃迪卡拉纪—寒武纪过渡期，是目前已知地球历史上最为深刻的生态系统变革 期。这一时期，后生动物已不满足于海底表面的二维活动，开始向沉积物深部进行三维探索。而这 种"海底打洞"的探索，将原本由微生物席主导、结构单一的海洋底质，变成了被生物扰动、层次分明的 现代型海底，永久性改变了地球环境与生命演化的轨迹。 中国科学院南京地质古生物研究所研究员陈哲介绍，在对湖北宜昌石板滩生物群化石的研究中，他 们发现锯形迹属中的多个遗迹化石种，并建立一个新遗迹化石种。锯形迹被视为动物首次向沉积物内部 进行三维探索的标志性遗迹，具有重要的演化生物学、动物行为学和生态学意义。与此同时，石板滩生 物群中还保存了多山迹及 ...

Core Insights - The research team from the Shanxi Coal Chemistry Research Institute and Peking University has achieved a breakthrough in iron-based Fischer-Tropsch synthesis catalysts, achieving less than 1% carbon dioxide selectivity and over 85% olefin selectivity, providing new approaches for clean utilization of high-carbon resources [1][2]. Group 1: Research Breakthrough - The new catalyst allows for significant reduction in carbon dioxide emissions while enhancing olefin production, which is crucial for the chemical industry as olefins are key raw materials for synthetic fibers, rubber, and plastics [1]. - The traditional iron-based catalysts have multiple active sites leading to high carbon dioxide generation, which limits carbon utilization efficiency and olefin selectivity [1]. Group 2: Methodology and Techniques - The research team employed a trace halogenated alkane co-feeding strategy, utilizing advanced characterization techniques such as X-ray photoelectron spectroscopy and synchrotron radiation X-ray absorption spectroscopy to effectively regulate the surface oxygen species and catalytic performance at the molecular level [2]. - This "molecular surgery" approach does not require changing the catalyst formulation but simply involves introducing trace halogens into the reaction system, achieving near-zero carbon dioxide emissions and high olefin selectivity [2]. Group 3: Future Directions - The research not only achieved dual breakthroughs in low carbon and high efficiency but also provided important theoretical insights into the activation and regulation mechanisms of halogens in the reaction, which will aid in understanding the microscopic reaction pathways of iron-based Fischer-Tropsch synthesis catalysts [2]. - Future efforts will focus on scaling up the halogen regulation strategy for industrial applications and verifying long-term stability, promoting its use in coal-to-liquid, natural gas conversion, and biomass utilization, thereby supporting the transition of China's coal chemical industry towards a more efficient, low-carbon, and green direction [2].

Group 1 - The "2025 National First Harmony Talent Job Fair and Computer Industry Talent Supply and Demand Meeting" was held in Wuhan, attracting over 100 employers to recruit talent for the Harmony ecosystem [1] - Wuhan KeLan Intelligent Technology Co., Ltd. plans to hire about 10 engineers, including C/C++ engineers and ArkTS development engineers, with salaries ranging from 15,000 to 20,000 yuan per month [1] - The company is focused on promoting the "AI + Harmony" dual-engine in financial scenarios and is in urgent need of Harmony talent [1] Group 2 - The job fair attracted many fresh graduates, with higher salary levels for algorithm and development engineering positions compared to other roles [2] - The Harmony Ecosystem (Wuhan) Innovation Center, set to operate in December 2024, aims to create a high-level public service platform for talent cultivation and industry aggregation [2] - There is a significant talent gap in the Harmony ecosystem, with a report indicating a current shortage of over one million professionals and potential new job openings exceeding three million [2]

Core Points - AstraZeneca signed a cooperation agreement with the Qingdao High-tech Industrial Development Zone Management Committee, announcing an additional investment of approximately $136 million to expand production capacity in Qingdao [1] - The Qingdao project will utilize energy-saving technologies to achieve near-zero carbon operations [1] Company Operations - AstraZeneca has three major production bases in China located in Wuxi, Taizhou, and Qingdao [1] - The Wuxi base has achieved 100% renewable energy usage and is the first in the industry to implement innovative clean heating solutions, receiving carbon neutrality certification [1] - The Taizhou base has reduced carbon emissions by 97.5% compared to 2015 [1] - The Qingdao base, currently under construction, is expected to achieve near-zero carbon operations upon commencement of production [1] Industry Engagement - This year marks AstraZeneca's eighth participation in the China International Import Expo (CIIE), showcasing innovative therapies across multiple disease areas [1] - Over the past seven years, AstraZeneca has introduced 18 "CIIE treasures," covering respiratory, renal, digestive, rare diseases, autoimmune diseases, and oncology, providing more treatment options for patients [1] - AstraZeneca's Global Executive Vice President and Head of International Business, Iskra Reic, emphasized the company's commitment to deepening engagement in China and contributing to the country's role as a global hub for healthcare innovation [1]

Core Viewpoint - The Shenzhou-20 manned spacecraft has been delayed due to a suspected impact from space debris, prompting an analysis of the risks and potential preventive measures [1] Group 1: Sources of Space Debris - Space debris primarily originates from human space activities, with over 40% coming from defunct spacecraft and related components, including retired satellites and rocket remnants [2] - Operational waste generated during space missions also contributes significantly to space debris, including intentionally or unintentionally discarded items [2] - Secondary debris from collisions and explosions of spacecraft is a key factor in the increasing amount of space debris [3] Group 2: Dangers of Space Debris - Even small debris, less than 1 centimeter in diameter, can cause fatal damage to spacecraft due to its high velocity, typically ranging from 7 to 10 kilometers per second [4] - Millimeter-sized debris can scratch spacecraft windows and solar panels, while centimeter-sized debris can penetrate the spacecraft's shell, potentially causing fuel leaks or explosions [4] - A critical density of debris in low Earth orbit can lead to a "domino effect," creating a debris cloud that could severely hinder future space activities [4] - Astronauts have minimal protection against space debris, with even 0.1 millimeter fragments posing a risk of injury [4] Group 3: Technologies to Mitigate Impact Risks - Current methods for predicting space debris impact risks rely on monitoring technologies and data analysis models, employing a combination of active avoidance, passive protection, and debris removal strategies [5] - Optical observation techniques utilize telescopes and cameras to detect debris, while radar monitoring provides all-weather, long-range detection capabilities [5][6] - New technologies, such as laser radar and multi-sensor fusion, enhance debris tracking accuracy and real-time updates on debris locations [6] - For larger debris over 10 centimeters, spacecraft typically perform orbital maneuvers to avoid collisions, while smaller debris is managed through passive protective measures [6]

"这些发现共同揭示，印度板块的低角度俯冲以及由此引发的地壳强烈缩短挤压，是驱动喜马拉雅 东部地震发生与地表持续抬升的关键因素。"论文第一作者兼通讯作者、中国科学院青藏高原研究所研 究员白玲说。（记者陆成宽） 在这项研究中，科研人员基于在喜马拉雅东部南迦巴瓦地区新布设的宽频带地震台站数据，首次清 晰刻画了该区域地下结构的特征。他们发现，印度板块地壳与地幔分界的莫霍面自南向北延伸，以较缓 的角度一直俯冲至拉萨地体下方。同时，作为关键构造的"主喜马拉雅逆冲断裂"在这里呈现为一种"斜 坡"形态。应力分析结果表明，该区域地壳正遭受强烈的南北向水平挤压。 记者5日从中国科学院青藏高原研究所获悉，基于喜马拉雅山脉东部宽频带地震台站获取的最新数 据，该所科研人员发现，印度板块正以低角度俯冲至青藏高原之下，这一过程强烈挤压地壳，是控制喜 马拉雅东部地震活动和山脉隆升的关键机制。相关研究成果在线发表于《国家科学评论》。 喜马拉雅山脉作为全球最典型的活动造山带之一，其形成与演化一直备受地学界关注。过去研究多 集中于山脉中段，而在喜马拉雅东部，是否存在类似结构、其形态如何，长期缺乏明确认识。 ...

Core Insights - The report highlights the significant achievements of Shanxi Province in the coalbed methane (CBM) industry, providing a model for nationwide scale and industrial development [1][2][3] Group 1: Industry Development Achievements - As of the end of 2024, Shanxi Province has proven geological reserves of approximately 0.97 trillion cubic meters of coalbed methane, maintaining the top position in the country [1] - The province has established two major industrial bases for coalbed methane in the Qinshui Basin and the eastern edge of the Ordos Basin, with six large gas fields each producing over one billion cubic meters [1] - In the first eight months of this year, Shanxi's total coalbed methane production reached 9.81 billion cubic meters, accounting for about 81.3% of the national output during the same period, setting a new historical high [1] Group 2: Policy and Market Framework - Shanxi Province has developed a comprehensive policy support system focused on high-quality development of the coalbed methane industry, addressing issues and industry needs [2] - The province has implemented a top-level design by introducing the "Shanxi Province Coalbed Methane Exploration and Mining Management Measures" and a series of supporting policy documents [2] - A strict exit mechanism has been established, with nearly 80% of exploration blocks meeting the target of a minimum annual exploration investment of 100,000 yuan per square kilometer, effectively addressing issues like "holding without exploration" [2] Group 3: Technological and Management Innovations - Shanxi is the first province in the country to reform the management system for coalbed methane, promoting comprehensive management reforms and innovations [3] - The province is actively promoting green development technologies in response to national carbon neutrality goals, implementing low-pollution and low-emission processes and equipment [2]

Core Insights - The 8th China International Import Expo (CIIE) opened in Shanghai, featuring participation from 155 countries, regions, and international organizations, with a record 4,108 overseas enterprises exhibiting and an exhibition area exceeding 430,000 square meters [1] Group 1: Event Overview - The expo showcases 461 new products, technologies, and services, including advanced innovations in low-altitude economy and humanoid robots, as well as developments in information technology, artificial intelligence, and green economy [1] - The exhibition area for enterprises has expanded to over 367,000 square meters, with six major exhibition zones including medical devices, automotive, technology equipment, consumer goods, agricultural products, and service trade [1] - 290 of the participating companies are from the Fortune Global 500 and industry leaders [1] Group 2: Economic Impact - There is a 23.1% year-on-year increase in enterprises from the 123 Belt and Road Initiative countries participating in the expo [2] - The number of enterprises from the least developed countries reached 163, marking a 23.5% increase [2] - African enterprises saw an 80% increase in participation compared to previous years [2] Group 3: Supporting Events - The concurrent Hongqiao International Economic Forum will feature 33 sub-forums and closed-door meetings, along with the release of the "World Open Report 2025" and the latest global openness index [1] - Over 80 supporting activities, including trade negotiations and investment promotion, will be held during the forum [1]