通过深入分析"怀柔一号"极目卫星的观测数据，科研团队在爆发后约24秒处，发现一段中心频率为 909赫兹、频率高度稳定且仅持续160毫秒的准周期振荡信号。该信号的脉动周期约1.1毫秒，与团队预 期的毫秒级磁陀星自转周期高度吻合。这表明，驱动该伽马暴的是一颗自转周期为1.1毫秒的磁陀星。 这是人类首次在伽马暴中观测到周期稳定的毫秒级脉动信号，为揭示致密天体并合产物的性质提供 了关键证据。 未来，研究团队将继续利用"极目""慧眼""天关"和SVOM（天基多波段空间变源监视器）等卫星的 观测数据，在更多伽马暴中寻找准周期振荡信号，并结合理论和数值模拟研究，全面理解磁陀星驱动伽 马暴的物理机制。（记者吴叶凡） 从中国科学院高能物理研究所获悉，由南京大学、中国科学院高能物理研究所和香港大学组成的合 作团队，利用"怀柔一号"极目卫星对一例特殊伽马暴的高精度观测数据，发现了磁陀星驱动伽马暴的直 接证据。该研究成果于9月19日发表于《自然·天文学》。 伽马暴是宇宙中最明亮、最剧烈的爆发现象之一，其在数秒内释放的能量可超过太阳一生所释放的 总能量。学界猜测伽马暴的驱动天体可能是黑洞或磁陀星等极端致密天体。但由于伽马暴距离遥远、持 ...

Core Viewpoint - The development of the agile underwater robot "Turtle" by Harbin Engineering University represents a significant advancement in underwater observation technology, enabling precise, efficient, and environmentally friendly exploration of marine environments [1][4]. Group 1: Technological Innovations - The "Turtle" robot reduces sediment disturbance by 90%, allowing for clearer underwater observations compared to traditional robots that create significant sediment clouds [2][3]. - A mathematical model was developed to predict the robot's low disturbance performance, enhancing research efficiency and reducing the need for extensive physical testing [3]. - The robot's stability has improved by 7.16 times, allowing it to maintain close proximity to the seabed while effectively adjusting its posture in response to external forces [5][6]. Group 2: Navigation and Maneuverability - The introduction of a posture constraint algorithm allows the "Turtle" robot to achieve 360-degree maneuverability, enabling it to navigate complex underwater terrains with ease [7]. - The robot demonstrated its agility through a practical test, successfully completing a challenging task in a confined space, showcasing its advanced navigation capabilities [8]. Group 3: Future Applications - The "Turtle" robot is expected to play a crucial role in coral observation, underwater rescue, and mining operations, with plans to enhance its functionality by adding features like macro cameras and robotic arms for more versatile applications [8].

Core Insights - The "Jimu No. 1" airship successfully conducted atmospheric observation tests in the Lulang area of Tibet, resembling a "giant white whale" [1] - It carried 16 types of scientific payloads weighing approximately 200 kilograms, achieving a technological leap from single-point sampling to three-dimensional monitoring at an altitude of 5,500 meters [1] - As part of the second Qinghai-Tibet scientific expedition, "Jimu No. 1" has completed 30 high-altitude tests since August, providing crucial data on atmospheric composition and pollutant distribution for studying climate evolution in the Tibetan Plateau and its relation to global climate change [1] Group 1 - The successful atmospheric observation tests were conducted on September 19 [1] - The airship's payloads enable comprehensive atmospheric monitoring [1] - The data collected supports research on climate change [1]

Core Insights - The successful production of the Liuhua 11-1/4-1 oilfield secondary development project marks a significant achievement for China National Offshore Oil Corporation (CNOOC) in overcoming the challenges of developing deep-water reef limestone oilfields, contributing to national energy security and revitalizing billion-ton deep-water oilfields [1][4]. Group 1: Project Overview - The Liuhua 11-1/4-1 oilfield project, located in the Pearl River Mouth Basin, consists of two oilfields with an average water depth of approximately 305 meters and plans to produce from 32 production wells [4]. - As of now, 27 production wells have been put into operation, with a daily crude oil production steadily increasing to 3,400 tons, which is 1.25 times the designed peak daily production [4]. Group 2: Technical Achievements - The Liuhua 11-1 oilfield, China's first deep-water oilfield, has produced over 20 million tons of crude oil since its launch in 1996, with a current recovery rate of only 12.84%, indicating significant untapped reserves of approximately 140 million tons [4][5]. - CNOOC has developed a series of water control and oil stabilization technologies over ten years, leading to significant improvements in recoverable reserves and recovery rates, extending the field's lifespan by 30 years [5]. Group 3: Production Efficiency - The current production wells in the Liuhua 11-1/4-1 oilfield have a daily liquid production rate of only 37.4% of the design value, with a comprehensive water cut reduced by 22% compared to the design, while crude oil production exceeds expectations [5]. - The operational success of the project validates the reliability of the water control and oil stabilization technology and the economic effectiveness of the "deep-water jacket platform + cylindrical FPSO" development model, contributing a "Chinese solution" for the efficient development of similar deep-water oil and gas fields [5].

Core Viewpoint - China Telecom officially launched the "Tianyi Smart Screen" as part of its "Beautiful Home" brand, aiming to create a smart home hub that integrates AI technology for various services including safety, health management, travel planning, and cultural interaction [1][4]. Group 1: Product Features - The Tianyi Smart Screen emphasizes safety features, offering services such as gas stove monitoring and health management through AI integration [2]. - It can remotely control gas stoves, provide alerts for potential risks, and monitor elderly individuals for falls, ensuring comprehensive home safety [2]. - The device also includes health management features like medication reminders, real-time health data entry, AI health consultations, and remote video consultations [2]. Group 2: User Interaction and Applications - The Tianyi Smart Screen supports voice commands for various daily needs, including travel inquiries, ticket bookings, and family video calls, enhancing user convenience [2]. - It features multi-dialect voice recognition, including Mandarin, Cantonese, and Shanghainese, with plans to expand to more dialects in the future [2][3]. - The product allows users to access additional applications such as data usage checks, top-ups, AI-generated art, storytelling, and poetry assistance [2]. Group 3: Future Development - China Telecom is committed to continuous innovation and product iteration to enhance user experience and lead the digital home into a smarter, safer, and more comforting era [4].

1945年9月，抗战胜利的消息传来时，裴久诚的爷爷默默流下了眼泪。"他终于盼到了抗战胜利，但他想念的孩子没有回家。"在中国人民大学家书博物馆， 裴久诚说起叔父裴超的故事，声音有些哽咽。 九一八事变后，中国人民开始了长达十四年的不屈抗战。1936年10月，红军三大主力在甘肃会宁胜利会师，当地青年裴超毅然参加了红军，踏上了保家卫国 的征程。 这一别，就连一句寻常的"报平安"，都成了裴家遥不可及的奢望。 终于，第一封家书到了！三年，等来了两页纸。1939年8月，他在山东费县。一年后，又收到三页纸，他在江苏盐城。而裴超直到离家的第5年，才在1941年 的第三封家书中，说自己收到了家里的来信。这一次他写了足足五页纸。 "我虽在外，心犹在家"，在第三封家书中，裴超反复表达对家人的挂念，恳请兄嫂、弟弟代为尽孝照顾父母，并希望妻子体谅自己，家庭和睦。"贤妻，自 从咱分离已数载，知你心中挂念非常得很，但我今天立即回家是没有可能的……我知道咱们是从小订婚的，绝不会在外再娶。" 抗战时期，日寇搜检严密，为了不让亲人受到牵连，裴超从没提过自己打了什么仗、在哪个部队，只在信中以"暗语"的形式，隐约透露近况："我今不言， 你也即知我的工 ...

9月18日，国新办举行"高质量完成'十四五'规划"系列主题新闻发布会，介绍"十四五"时期科技创新发展成就。一组图回顾发布要点！ 好技日報 高质量完成"十四五"规划系列主题新闻发布会 介绍"十四五"时期科技创新发展成就 持续加强关键核 心技术攻关和成 果应用，以科技 创新引领新质生 产力发展,取得 12 - 8 - 1 高质量完成"十四五"规划系列主题新闻发布会 介绍"十四五"时期科技创新发展成就 J 积极成煤。 19 5 高质量完成"十四五"规划系列主题新闻发布会 介绍"十四五"时期科技创新发展成就 以天更蓝、食更 优、行更快、更 健康等目 进行了系统性布 取得了 K 局， 列突破性成果。 195日报 高质量完成"十四五"规划系列主题新闻发布会 介绍"十四五"时期科技创新发展成就 国家不断加强区 域统筹、央地协 推动区域科 l可， 技创新形成全国 盘棋。 好波HR 高质量完成"十四五"规划系列主题新闻发布会 介绍"十四五"时期科技创新发展成就 我国科技成果转 化水平又上了 个新台阶,全国 技术合同成交额 连续多年保持两 位数增长。 好技日報 坚持自由探索和自 标导向"两条腿" 走路,不断强化平 台基地与学科体 ...

Core Viewpoint - The "14th Five-Year Plan" marks a significant milestone in China's technological development, with historical achievements and transformations in the sector under the strong leadership of the Party [1][3]. Group 1: Technological Innovation and Investment - China's comprehensive innovation capability ranking improved from 14th in 2020 to 10th in 2024, driven by increasing R&D investment [3]. - Total R&D investment in 2024 is projected to exceed 3.6 trillion yuan, a 48% increase from 2020, with an R&D intensity of 2.68%, surpassing the EU average [3]. - Basic research funding reached 249.7 billion yuan, growing over 70% since 2020, with significant achievements in quantum technology, life sciences, and other fields [3]. Group 2: Structural Reforms and Policy Enhancements - Continuous deepening of technological system reforms has released innovation vitality, with optimized talent evaluation and incentive policies [4]. - The national major technology task organization mechanism has been improved, emphasizing strategic demand orientation and exploring funding models [4]. - Coordination among technology, finance, industry, and education policies has been strengthened, with significant actions taken to support technology financing [4]. Group 3: International Cooperation and Global Competitiveness - China has established technological cooperation with over 160 countries and regions, signing 119 intergovernmental agreements [5]. - The implementation of the "Belt and Road" technology innovation action plan and the establishment of international laboratories are key initiatives [5]. Group 4: Industrial Growth and Economic Impact - The scale of high-tech industries has expanded, with the added value of high-tech manufacturing increasing by 42% since the end of the 13th Five-Year Plan [7]. - In 2024, 524 Chinese companies entered the global top 2000 for industrial R&D investment, representing 26.2% of the total, an increase of 4.8 percentage points since 2020 [7]. - Major technological achievements include the operational status of the "Tianhe" space station and the commercial flight of the C919 aircraft, showcasing China's innovation capabilities [7]. Group 5: Societal Benefits and Quality of Life - Technological innovations have significantly improved public welfare, supporting agricultural self-sufficiency and advancements in health care [8]. - Environmental improvements have been noted, with PM2.5 concentrations in the Beijing-Tianjin-Hebei region decreasing by 18% during the 14th Five-Year Plan [8]. - New technologies have enhanced safety in production and emergency response, contributing to societal governance [8].

Core Insights - A new type of hydrogen negative ion electrolyte has been developed by a research team from the Dalian Institute of Chemical Physics, marking the successful creation of the world's first hydrogen negative ion prototype battery, transitioning from conceptual theory to experimental validation [1][2] Group 1: Battery Technology - Hydrogen is identified as a crucial component of future clean energy systems, existing in three forms: hydrogen positive ions, hydrogen atoms, and hydrogen negative ions. Hydrogen negative ions are noted for their strong reactivity and high electron density, making them a promising energy carrier [1] - The hydrogen negative ion battery operates similarly to lithium-ion batteries, with the key difference being the transport medium, which shifts from lithium ions to hydrogen negative ions [1] - The research team utilized a "core-shell structure" strategy, wrapping barium hydride around cerium trihydride to create an electrolyte that exhibits high hydrogen negative ion conductivity, low electronic conductivity, and high stability [1] Group 2: Performance Metrics - Experimental data shows that the battery's anode achieved a discharge capacity of 984 milliampere-hours per gram (mAh/g) for the first time, maintaining a capacity of 402 mAh/g after 20 charge-discharge cycles [2] - The team successfully constructed a stacked battery that increased the voltage to 1.9 volts and demonstrated the battery's capability to power an LED light, indicating its potential for electronic device applications [2] Group 3: Future Prospects - The hydrogen negative ion battery is positioned as a novel energy storage technology with potential applications in large-scale energy storage, hydrogen storage, and mobile power sources [2] - Future efforts will focus on optimizing the core materials and performance of hydrogen negative ion batteries, aiming to expand application scenarios and support the development of green energy in China [2]

Core Insights - The Ministry of Science and Technology emphasizes a dual approach of free exploration and goal-oriented strategies during the 14th Five-Year Plan period, enhancing the overall strength of basic research in China [1] Group 1: Talent Development - The number of basic research talent in China has increased from 472,000 in 2021 to 575,000 in 2023, indicating a significant growth in the workforce dedicated to foundational research [1] - The number of highly cited scientists in China is projected to reach 1,405 in 2024, representing a 50% increase from 2021 and accounting for one-fifth of the global total [1]