Core Insights - Gansu Province's Pingliang City has successfully discovered a large magnesium limestone deposit with a total resource volume of 700 million tons, marking a significant breakthrough in mineral exploration in the region [1] Group 1: Mineral Discovery - The magnesium limestone deposit is located in the Zhuangmatai area of Pingliang City, with exploration efforts funded by provincial, municipal, and county-level finances since 2000 [1] - The deposit is characterized by five layered magnesium limestone bodies with an average MgO grade of 20.67%, indicating high-quality magnesium limestone [1] Group 2: Mining Characteristics - The deposit features large scale, shallow burial, gentle dip, and stable thickness, making it advantageous for open-pit mining [1] - Exploration methods included geological mapping, drilling, systematic sampling, and research on ore processing technology, which clarified the deposit's characteristics and mining conditions [1] Group 3: Resource Utilization - The estimated amount of magnesium limestone ore within the open-pit mining boundary exceeds 700 million tons, along with over 300 million tons of limestone for construction purposes [1] - The magnesium limestone is not only a crucial raw material for magnesium metal smelting but also has significant potential for use in refractory materials, metallurgical flux, glass, and ceramics [1]

Core Insights - Rare earth elements are essential strategic resources in high-tech fields such as artificial intelligence, renewable energy, and national defense, but traditional mining methods cause significant environmental damage [1][2] - A study published in the journal "Environmental Science & Technology" reveals that the plant "Osmunda japonica" can accumulate rare earth elements and form a mineral called "lanthanite," marking the first observation of biogenic mineralization of rare earths in natural plants [1][4] Group 1 - The research team discovered that "Osmunda japonica" acts as a "rare earth vacuum cleaner," efficiently absorbing and concentrating rare earth elements from the soil [1][4] - The process involves the precipitation of rare earth elements in the form of nanoparticles within the plant's vascular bundles and epidermal tissues, which then crystallize into phosphate rare earth minerals [1][4] - This mechanism serves as a protective strategy for the plant, effectively "packaging" toxic rare earth ions into mineral structures, thus detoxifying them [1][4] Group 2 - The biogenic lanthanite formed by "Osmunda japonica" is pure and free of radioactive elements, presenting a promising green extraction potential compared to traditional mining methods [2][4] - The study highlights the previously underestimated mineralization capabilities of plants, opening new avenues for research on nearly a thousand known hyperaccumulating plant species [4] - The findings suggest a sustainable approach to rare earth resource utilization, where planting hyperaccumulating species like "Osmunda japonica" can aid in soil remediation while recovering valuable rare earths, achieving a green circular economy [4]

Core Insights - The article highlights the transformation of traditional customs supervision at Tianjin Port through the implementation of advanced technologies, enhancing the efficiency of foreign trade operations [1][2][3] Group 1: Technological Advancements - The "Intelligent Inspection Assistant" significantly improves customs clearance efficiency by automating the inspection process and providing real-time guidance to customs officers [2][3] - The integration of a three-dimensional machine vision monitoring network allows for comprehensive real-time monitoring of port activities, reducing the need for manual oversight [4][5] Group 2: Operational Efficiency - The new customs inspection methods have reduced the time required for inspections from at least 30 minutes to under 10 minutes, streamlining the overall process [2][3] - The implementation of smart logistics platforms has optimized port operations, enabling the identification and management of containers based on their status and contents [4][6] Group 3: Risk Management - The establishment of intelligent risk identification models allows for effective monitoring and early warning of potential issues, such as abnormal container activities [5][6] - Recent inspections have successfully intercepted illegal goods, demonstrating the effectiveness of the new monitoring systems in safeguarding national biosecurity [5] Group 4: Future Directions - Tianjin Customs plans to continue enhancing its "smart customs" initiatives, focusing on balancing efficient service delivery with risk prevention to support high-quality foreign trade development [6]

Core Insights - The 15th National Games featured the first marathon swimming event held in open sea conditions, presenting unique challenges for athletes and organizers [1][3] - Meteorological services played a crucial role in ensuring the safety and fairness of the event, utilizing advanced technology for real-time monitoring and forecasting [3][5] Meteorological Services - The event required precise weather conditions, with suitable wind speeds under 5 m/s and water temperatures between 12°C and 32°C [3][4] - The Shenzhen Meteorological Bureau provided a modernized meteorological service system, ensuring a safe environment for the competition [3][5] - Historical climate data was analyzed, confirming a 60% probability of suitable wind conditions during the event [3][5] Technological Innovations - The meteorological team employed artificial intelligence and advanced forecasting models to predict weather patterns accurately, which was critical for event planning [5][6] - A comprehensive meteorological observation system was established, integrating satellite monitoring and high-precision observation networks to support decision-making [5][6] Event Management - The meteorological team conducted on-site assessments and provided real-time weather updates to the event organizers, ensuring that conditions remained favorable for the competition [4][5] - The successful execution of the marathon swimming event demonstrated the effectiveness of meteorological technology in supporting major sporting events [5][6]

Core Insights - The High Energy Photon Source (HEPS) has passed its process acceptance, marking it as China's first high-energy synchrotron radiation source and Asia's first fourth-generation synchrotron radiation source [1][2] - The expert review panel acknowledged that HEPS has achieved leading international performance among similar devices, representing a generational leap in China's synchrotron radiation sources [1] - HEPS is designed to emit light 10 trillion times brighter than the sun, enabling researchers to better explore the microscopic world and understand the structure and evolution of materials [1] Project Overview - The HEPS project was officially launched in June 2019 and has been constructed by the Institute of High Energy Physics, Chinese Academy of Sciences [2] - After over six years of construction, the project has successfully completed the tasks approved by the National Development and Reform Commission [2] Technical Specifications - HEPS consists of two main components: an accelerator and beamline stations, capable of accommodating at least 90 high-performance beamlines [1] - The first phase includes the construction of 14 user beamlines and one test beamline, providing X-rays with an energy of up to 300,000 electron volts [1] Applications and Impact - HEPS is expected to support national strategic needs and enhance industrial core innovation capabilities, facilitating advancements in various fields such as engineering materials, microelectronics, new drug development, petrochemicals, energy environment, and nanomaterials [1]

（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]