Core Viewpoint - The increasing risk of collisions due to space debris threatens satellite operations and space missions, prompting the development of a new non-contact, efficient debris removal technology by a Japanese research team [1][2]. Group 1: Space Debris Issue - The problem of space debris is becoming severe, with numerous defunct satellites, rocket remnants, and tiny fragments traveling at speeds exceeding that of bullets, posing significant threats to active satellites and spacecraft [1]. - The uncontrolled debris significantly increases the risk of sustainable human activities in space, highlighting the need for effective removal methods [1]. Group 2: Innovative Technology Development - The research team from Tohoku University has proposed and validated an innovative solution that utilizes plasma ejected from satellites to slow down space debris, encouraging it to deorbit and burn up upon re-entry into the atmosphere [1]. - Traditional methods of debris removal often rely on direct contact, which carries the risk of entanglement; however, the new method using plasma propulsion is gaining attention as a promising alternative [1]. Group 3: Technical Advancements - To enhance deceleration efficiency, the team introduced a special magnetic field structure called "tip" to confine the plasma plume and prevent its dispersion, achieving a deceleration force three times greater than previously reported in simulations [2]. - The propulsion system employs inexpensive and abundant argon gas as the propellant, demonstrating good economic viability and practicality for debris removal [2]. - The development of a "bipolar plasma jet type non-electrode plasma thruster" allows for simultaneous plasma ejection in both the direction of the debris and the opposite direction, counteracting recoil and maintaining the stability of the removal satellite [1][2].

和地球上的大型滑坡不同，月球上的新滑坡显得"小巧"且"浅表"。其大多数滑坡长度不到1公里，宽度 不足100米，最厚的地方不到1米。从规模上看，每处滑坡移动的物质的体积都小于10万立方米，且主要 集中在坡度24°至42°的斜坡上。 9月15日，记者从中山大学获悉，该校大气科学学院肖智勇团队联合遥感科学与技术学院教授张吴明通 过卫星图像分析，发现2009年以来月球上新增了数十处滑坡，而这些滑坡的主要"推手"，不是小行星撞 击，而是月球内部产生的地震，也就是科学家所称的"内生月震"。相关成果近日发表于《国家科学评 论》。 "我们通过卫星图像对比的方法找到了月球上的新滑坡。"张吴明介绍，团队用分辨率小于1米/像素的数 据，对比覆盖同一区域的前、后图像数据。研究发现，自2009年以来，月球形成了大量的新滑坡。 研究团队挑选了月球正面和背面容易发生滑坡的74个观测区域，包括年轻撞击坑的陡峭坑壁、断层活动 形成的皱脊，以及可能存在近期火山活动的不规则月海斑块。团队通过精准对齐前序和后序图像数据， 再计算反照率变化，找到了滑坡发生的地点和形态。据介绍，对这些观测区域内新滑坡的研究，可反映 月球整体的滑坡活跃水平。 那么，是什 ...

Core Insights - The Northeast Energy Strategic Corridor in China has successfully transported over 330 million tons of crude oil and more than 100 billion cubic meters of natural gas, contributing significantly to the economic and social development of the region [1] - The corridor has achieved technological innovations, including the first successful crossing of the unstable permafrost zone in Eurasia and the complete localization of key equipment and control systems for oil and gas pipelines [1] Group 1: Pipeline Construction Challenges - The primary challenge in pipeline construction is the unique discontinuous and island-like permafrost, which can cause instability in the pipeline due to expansion in cold weather and subsidence in warm weather [2][3] - To address this, a dynamic control method for permafrost has been developed, allowing for the stable transportation of crude oil by predicting permafrost evolution and its impact on pipelines [3][4] Group 2: Pipeline Integrity and Safety - The "North Gas Southward" energy corridor, a significant project for natural gas transportation, has a daily gas transmission capacity exceeding 110 million cubic meters and an annual capacity of 38 billion cubic meters, sufficient for 130 million urban households [5][6] - A new crack resistance prediction model has been developed specifically for large-diameter, high-strength pipelines, incorporating soil type, burial depth, and pipe diameter to ensure safety during energy transportation [6][7] Group 3: Intelligent Detection Technologies - The research team has created a high-resolution detection technology for large-diameter pipelines, utilizing a robot equipped with sensors to detect micro-defects and additional stress without disrupting pipeline operations [8][9] - This robotic system can collect approximately 2-3 GB of data per minute while traversing the pipeline, allowing for timely identification of potential defects or stress changes [9]

Core Viewpoint - The application of three-dimensional Gaussian splashing technology by State Grid Ningxia Electric Power Company significantly enhances the construction process of complex scenes in the Ningxia power grid project, improving safety and efficiency [1] Group 1: Technology Implementation - State Grid Ningxia Electric Power Company utilized drones for panoramic photography of the J2064 tower at the Ningxia 750 kV transmission and transformation project [1] - The three-dimensional Gaussian splashing technology simulates point cloud data in three-dimensional space, allowing for high-precision model construction and realistic scene restoration [1] - This technology combines Gaussian functions that carry information such as position, color, size, and transparency, resulting in a highly realistic and efficient rendering of complex scenes [1] Group 2: Benefits and Applications - The technology allows for precise virtual reproduction of construction sites, particularly in complex scenarios such as crossing the Yellow River and high-speed rail, facilitating the simulation of critical processes like scaffold construction and insulation net layout [1] - By optimizing organizational plans, this technology significantly enhances construction safety [1] Group 3: Future Directions - The integration of three-dimensional simulation technology with construction practices represents further exploration by the Ningxia Electric Power Engineering Technology Laboratory into three-dimensional design applications [1] - The company plans to continue tackling key technologies, strengthening independent innovation capabilities, and advancing basic research and technology breakthroughs to enhance overall innovation efficiency [1] - The Ningxia Electric Power Engineering Technology Laboratory aims to play a crucial role in supporting the high-quality construction of the Ningxia power grid [1]

Core Points - The article highlights the inspirational encounter between students and astronaut Gui Haichao at the Beijing Aerospace Museum, emphasizing the importance of education and perseverance in pursuing dreams in the aerospace field [1][4]. Group 1: Gui Haichao's Influence - Gui Haichao is recognized not only as an astronaut but also as a scientist and a role model for many young people interested in space exploration [2]. - He encourages students to embrace challenges and collaborate to solve significant problems, emphasizing the need for continuous learning and physical fitness [2][4]. Group 2: Student Reactions and Aspirations - Students from Qingdao No. 58 Middle School expressed their excitement upon meeting Gui Haichao, feeling fortunate to witness such an encounter [1][4]. - One student, Cui Zhongrui, articulated a desire to emulate the spirit of astronauts, focusing on the importance of meaningful contributions to the country rather than wealth [4][5]. Group 3: The Aerospace Museum - The Beijing Aerospace Museum, established in 1985, showcases over 300 significant aerospace artifacts, including various aircraft and models, highlighting China's achievements in space exploration [5]. - The museum serves as a platform for students to gain a deeper understanding of the aerospace spirit and the hard work behind China's space endeavors [4][5].

Core Viewpoint - The increasing risk of collisions due to space debris threatens satellite operations and space missions, prompting the development of a new non-contact, efficient debris removal technology by a Japanese research team [1][2]. Group 1: Space Debris Issue - The problem of space debris is becoming severe, with numerous defunct satellites, rocket remnants, and tiny fragments traveling at speeds exceeding that of bullets, posing significant threats to active satellites and spacecraft [1]. - The uncontrolled debris significantly increases the risk of sustainable human activities in space, necessitating effective removal solutions [1]. Group 2: Innovative Technology Development - The research team has proposed and validated a novel solution that utilizes plasma ejected from satellites to slow down space debris, encouraging it to re-enter the atmosphere and burn up [1][2]. - Traditional single-direction plasma ejection generates strong recoil, which can destabilize the removal satellite; thus, a "bidirectional plasma jet non-electrode plasma thruster" has been developed to counteract this recoil and maintain stability [1][2]. Group 3: Efficiency and Economic Viability - To enhance deceleration efficiency, a special magnetic field structure called "spike" has been introduced to confine the plasma plume and prevent its dispersion, achieving a deceleration force three times greater than previous studies [2]. - The propulsion system uses inexpensive and abundant argon gas as the propellant, demonstrating good economic feasibility and practicality [2].

近日，中央气象台首席预报员孙军刚刚完成上海合作组织天津峰会气象保障工作。尽管略显疲惫， 但一提起防汛预报，他的眼神立刻焕发出光彩。 7月23日，中央气象台会商室异常繁忙。作为值班首席，孙军格外紧张——北有强降雨，南有台 风，此次天气过程形势不能小觑。他久久地注视着电脑屏幕，手中的标记笔在京津冀区域画了一个醒目 的红色圆圈。"这里，明天将出现特大暴雨，降雨量可能突破极值。"他的声音沙哑却坚定，这已是孙军 连续多天坚守在防汛预报一线。 第二天，华北北部迎来新一轮强降雨过程。孙军和团队提前72小时准确预测出暴雨落区和强度，并 将最大降雨量提至300毫米左右，为京津冀地区人员转移和水库调度争取了宝贵时间。 "有些人认为，随着技术进步，天气预报已经不难。但其实，短时强降雨的精准预测至今仍是世界 性难题。"孙军曾经是暴雨预报专家创新团队的负责人，他非常清楚异常强降水的预报挑战。为提高准 确率，他长期致力于构建强降水概念模型和诊断方法，完成了大量极端降水个案的筛选与概念模型的初 步建立，为一线预报员提供定性思路和定量指标。 目前，我国24小时暴雨预报的风险评分从十几年前的15%提升至20%，已达到国际先进水平。"预 报是一 ...

Core Insights - The first large-scale land-based wind power project in China, the Inner Mongolia Energy Urat Qianqi 1.5 million kW wind-storage base project, has officially commenced commercial operation [1] Group 1: Project Overview - The project is located in Ganchi Maodu Town, Urat Qianqi, Bayannur City, Inner Mongolia, and utilizes 150 units of 10 MW wind turbines, making it the largest land-based wind power "giant array" in the country [3] Group 2: Technological Advancements - The super-large wind turbines feature all-carbon fiber blades, with a root diameter of 3.6 meters, enhancing the load-bearing capacity by over 26% [3] - The distance between the blade tips and the tower has increased by over 12%, significantly improving the safety of the blades during operation [3] - The project employs a main bearing with a diameter of 1.7 meters, which has notable advantages in width and thickness, resulting in a load-bearing capacity improvement of over 20% [3] - Overall safety performance of the turbine units has been significantly enhanced [3]

Economic Growth and Stability - In August, the industrial added value of large-scale enterprises increased by 5.2% year-on-year, with high-tech manufacturing growing by 9.3% [1] - The total import and export value reached 38,744 billion yuan, reflecting a year-on-year growth of 3.5% [1] - The overall operation of the national economy remains stable, with high-quality development being steadily advanced [1] Sector Performance - The manufacturing value added for smart vehicle equipment and electronic components grew by 17.7% and 13.1% respectively, while integrated circuit manufacturing increased by 23.5% [2] - The modern service industry showed positive momentum, with the production index for information transmission software and IT services growing by 12.1%, and leasing and business services by 7.4% [2] - The production of new energy vehicles and lithium-ion batteries for vehicles surged by 22.7% and 44.2% respectively in August [2] Trade and Policy Impact - From January to August, the import and export value with countries involved in the Belt and Road Initiative increased by 5.4%, outpacing the overall import and export growth rate [2] - The macroeconomic policies are effectively supporting economic stability and growth, with ongoing reforms and deepening of opening-up measures [2] - The underlying conditions for long-term economic improvement remain unchanged, driven by the release of consumption potential, cultivation of new driving forces, and enhanced market vitality [2]

Core Insights - The successful testing and acceptance of the remote operation system testing platform for the CRAFT facility marks a significant breakthrough in China's fusion reactor core maintenance technology [1][2][3] - The CRAFT facility, located in Hefei, Anhui Province, integrates advanced technologies to tackle key technical challenges in fusion reactor systems, with full completion expected by the end of 2025 [1][2] - The remote operation system is designed to perform high-precision maintenance of large components under extreme conditions, addressing the limitations of current industrial robot technology [2][3] Summary by Sections - **Technological Breakthrough**: The remote operation system can handle a payload of 60 tons with a circumferential transfer precision of ±3.1 mm and vertical lifting precision of ±3.8 mm, showcasing top-tier parameters in the fusion field [1][2] - **Maintenance Challenges**: The system addresses the technical bottleneck of maintaining core components under high radiation and confined spaces, which is critical for the stable operation and commercialization of fusion reactors [2] - **Future Applications**: The technology developed has potential applications beyond fusion reactors, including nuclear power maintenance, aerospace, heavy machinery, and emergency rescue, indicating high industrialization potential and social value [3]