Ke Ji Ri Bao
Search documents
重大突破!中国科学家成功观测→
Ke Ji Ri Bao· 2025-08-28 12:30
Core Insights - Chinese scientists have successfully observed a new type of "thermal" topological edge state on a 125-bit superconducting quantum chip, paving a new path for protecting fragile quantum information [1][4] - The research was published in the latest issue of Nature and involved collaboration between Tsinghua University and Zhejiang University [1] Group 1: Research Findings - The study focuses on symmetry-protected topological edge states, which are novel states of matter in condensed matter physics, known for their resistance to specific symmetry disturbances and potential in quantum information [4] - The research team conducted quantum simulation experiments using the "Tianmu 2" superconducting quantum chip, which features flexible programmability and high-precision synchronous quantum logic operations [4] - The team successfully observed topological edge states that are unaffected by thermal excitations during approximately 270 layers of quantum circuit evolution, and they investigated the dynamics of thermal excitations in a preheated state [4] Group 2: Methodology and Implications - The research established a feasible digital quantum simulation method based on high-precision control of the 100-bit superconducting quantum chip, providing new experimental means to explore topological materials at finite temperatures [4] - The team also utilized robust topological edge states to encode and prepare logical Bell states, effectively validating their robustness against thermal excitations [4]
国务院印发《意见》:深入实施“人工智能+”行动
Ke Ji Ri Bao· 2025-08-28 08:57
Core Viewpoint - The "Artificial Intelligence+" action plan aims to deeply integrate artificial intelligence with various sectors of the economy and society, fostering a new intelligent economy and society by 2035 [1][2][3] Group 1: Objectives and Goals - By 2027, the plan aims for widespread integration of AI in six key areas, with over 70% application penetration of new intelligent terminals and agents, and a significant enhancement of AI's role in public governance [1] - By 2030, AI is expected to fully empower high-quality development, with over 90% application penetration of new intelligent terminals and agents, making the intelligent economy a crucial growth driver for China's economy [1] - By 2035, the country aims to enter a new stage of intelligent economy and society development, providing strong support for achieving socialist modernization [1] Group 2: Key Actions - The plan outlines six key actions, including accelerating the implementation of AI in scientific technology, industrial development, consumer quality improvement, public welfare, governance capabilities, and global cooperation [2] - In the scientific technology sector, the plan emphasizes the construction and application of large scientific models, upgrading major scientific infrastructure, and enhancing complex scientific data processing capabilities [2] - For industrial development, the plan focuses on intelligent integration across all industrial elements, promoting AI-driven production process optimization, and enhancing industrial systems' intelligent perception and decision-making capabilities [2] Group 3: Advantages and Impacts - The implementation of the "Artificial Intelligence+" action is expected to leverage China's rich data resources, complete industrial system, and vast application scenarios to upgrade traditional industries and develop new strategic industries [3] - The plan is anticipated to stimulate demand growth, accelerate energy transition, and attract global investment, contributing to high-quality economic development and enabling all citizens to share in the benefits of AI [3] - The establishment of a dual empowerment model, where innovation drives application and application promotes innovation, is a key feature of the plan, supported by optimized application environments and robust policy frameworks [3]
地球大气氧含量从无到有奥秘揭示
Ke Ji Ri Bao· 2025-08-28 08:57
Core Insights - The research conducted by Nanjing University and international collaborators reveals the evolutionary history and control mechanisms of Earth's atmospheric oxygen transition from anoxic to oxic conditions, providing critical geochemical indicators for understanding the origin and evolution of life on Earth and its habitability [1][2] Group 1: Research Findings - The study established a high-resolution record of sulfate triple oxygen isotopes, which can trace changes in ancient atmospheric oxygen levels [1] - The research team created a nearly 3 billion-year record of triple oxygen isotope evolution, indicating three significant transitions in atmospheric oxygen content occurring in the Paleoproterozoic (2.4 to 2.1 billion years ago), Neoproterozoic (around 1 billion years ago), and Paleozoic (around 440 million years ago) [1] - The atmospheric oxygen levels rose in stages, stabilizing at a near-oxic state approximately 410 million years ago [1] Group 2: Mechanisms of Change - Following the increase in atmospheric oxygen, there was a periodic oxidation of anoxic oceans, promoting the oxidation of organic carbon and reduced sulfur in anoxic waters, leading to significant isotopic disturbances [2] - This process rapidly consumed large amounts of oxygen through negative feedback mechanisms, inhibiting or even reversing further increases in atmospheric oxygen levels [2] - The research quantitatively reconstructed the evolutionary history of Earth's atmospheric oxygen content, revealing the dynamic coupling and co-evolution mechanisms between atmospheric and oceanic oxidation states [2]
“十四五”答卷·科技支撑强国建设|科技创新奏响制造强国建设“三重奏”
Ke Ji Ri Bao· 2025-08-28 08:57
Group 1: Manufacturing Innovations - The development of "hand-tear steel" by Taiyuan Iron and Steel Co. (TISCO) fills a critical gap in the photolithography process with a precision foil of only 0.025 mm thickness and 1 micron accuracy, showcasing China's capability in advanced manufacturing [1] - The C919, China's domestically produced large passenger aircraft, has achieved normalized commercial operations, covering 16 cities and transporting over 2.05 million passengers in two years, marking a significant milestone in China's aerospace industry [2] - The "China Railway 1459" shield tunneling machine, developed by China Railway Engineering Equipment Group, sets a new record for the largest excavation diameter for exported shield machines, demonstrating advancements in construction machinery [2] Group 2: High-end Manufacturing Growth - High-end manufacturing is identified as a crucial support for high-quality economic development, with a focus on technology research and increasing domestic substitution rates to strengthen national capabilities [3] - During the 14th Five-Year Plan period, significant achievements in high-end manufacturing include the launch of the "Aida·Magic City" cruise ship and the successful operation of the world's first 16 MW offshore wind turbine [3] - The high-tech manufacturing sector's added value is projected to grow by 42% compared to the end of the 13th Five-Year Plan, with its share of industrial added value reaching 16.3% [4] Group 3: Digital Transformation in Manufacturing - The integration of AI and robotics in manufacturing is advancing, with robots capable of performing complex tasks and communicating with engineers, indicating a shift towards intelligent manufacturing [6] - The implementation of deep learning models in factories has improved parameter prediction accuracy by over 5%, leading to significant economic benefits [7] - By March 2023, over 30,000 smart factories have been established in China, with a digital design tool penetration rate of 83.5% and a CNC rate of 66.2% in key processes [7] Group 4: Green Manufacturing Initiatives - The establishment of the first 100% green electricity-connected zero-carbon industrial park in Dongying, Shandong, represents a significant step towards sustainable manufacturing practices [8] - The construction of the world's largest compressed gas energy storage station in Xinjiang highlights advancements in clean energy storage technologies [8] - By the end of 2024, China aims to cultivate 6,430 national-level green factories, contributing approximately 20% to the total manufacturing output, emphasizing the shift towards sustainable production [9]
井上望远镜拍到最清晰太阳耀斑图像,揭示日冕回路微观结构
Ke Ji Ri Bao· 2025-08-28 08:57
Core Insights - The Daniel K. Inouye Solar Telescope has captured the clearest images of solar flares to date at H-α wavelength (656.28 nm), marking a significant advancement in solar observation [1][2] - The telescope recorded numerous dark coronal loops during an X1.3-class flare, with an average width of 48.2 kilometers and a minimum width of 21 kilometers, setting a record for the narrowest coronal loops observed [1] - This breakthrough allows scientists to directly study the fundamental processes driving flares, such as magnetic reconnection, which were previously only theorized [1] Group 1 - The Inouye Telescope's observations provide a direct view of coronal loops, which are plasma arcs along solar magnetic field lines, often appearing before flares [1] - The ability to observe these structures at such a fine scale enables researchers to investigate the core mechanisms behind flare occurrences [1][2] - The imagery produced by the telescope is described as stunning, with dark filamentous loops resembling a glowing archway, allowing even non-experts to appreciate the complexity and beauty of solar phenomena [2] Group 2 - The previous theoretical predictions suggested that the width of these loops could range from 10 kilometers to 100 kilometers, but direct observation was hindered by resolution limitations [1] - The Inouye Telescope's capability to capture these details represents a leap forward in solar physics, providing insights that were previously confined to theoretical models [1] - The findings may have implications for understanding solar storms and their potential impact on Earth's critical infrastructure [1]
集成黑色金属、激光蚀刻、“迷你温室”三大技术,新型太阳能热电发电机效率大幅提升
Ke Ji Ri Bao· 2025-08-28 08:57
Core Insights - A new type of solar thermoelectric generator (STEG) developed by scientists at the University of Rochester has achieved a 15-fold increase in conversion efficiency compared to earlier versions [1] - The new STEG can power IoT wireless sensors and wearable devices, and serve as an off-grid renewable energy system for rural areas [1] Group 1: Technological Innovations - The new STEG integrates three innovative strategies: the use of self-developed black metal technology on the hot side to selectively absorb solar wavelengths [2] - Femtosecond laser pulses are used to etch nanoscale structures on the metal surface, enhancing solar energy absorption and reducing thermal radiation loss [2] - A microstructured heat sink made from treated aluminum on the cold side significantly improves cooling performance, doubling the cooling efficiency [2] Group 2: Efficiency Improvements - The research team focused on enhancing the heat absorption and insulation capabilities of the hot side while optimizing the cooling performance of the cold side, leading to a significant breakthrough in efficiency [2] - The new STEG demonstrates the ability to power organic light-emitting diodes (OLEDs) with efficiency levels far exceeding current methods [2]
台风活动、全球变暖、水汽输送……全球气候系统变化导致华北雨季超长“待机”
Ke Ji Ri Bao· 2025-08-28 06:58
Core Viewpoint - The article discusses the unusually long and wet rainy season in North China, highlighting its early onset and significant rainfall, which are attributed to various climatic factors and global warming effects [1][2][3]. Group 1: Rainy Season Characteristics - The rainy season in North China began on July 5, 2025, which is 13 days earlier than the average start date of July 18 [2]. - As of August 21, the average rainfall in the North China monitoring area reached 315.5 mm, which is 131% higher than the normal value of 136.6 mm [2]. Group 2: Contributing Factors - The increased rainfall is linked to several factors, including abnormal sea temperatures in the equatorial Pacific, a strong and shifted subtropical high-pressure system, typhoon activity, and geographical influences [3][4]. - The subtropical high-pressure system has been notably strong and positioned further north than usual, facilitating the transport of warm, moist air to northern China [3]. Group 3: Geographical Influence - The geographical features of the Beijing-Tianjin-Hebei region, including the Taihang and Yan mountains, enhance precipitation through orographic lift, which promotes condensation of moisture [4]. - The combination of topographical effects and weather systems significantly increases rainfall efficiency in the region [4].
科技创新奏响制造强国建设“三重奏”
Ke Ji Ri Bao· 2025-08-28 05:44
Group 1: Technological Innovations in Manufacturing - The development of "hand-tear steel" by Shanxi Taigang, a unique stainless steel material with a thickness of 0.025 mm and precision of 1 micron, fills a critical gap in the photolithography industry [13] - The "14th Five-Year Plan" emphasizes the importance of enhancing independent innovation and mastering key core technologies to strengthen China's manufacturing base [13] - Over the past five years, China's manufacturing sector has transitioned from "following" to "keeping pace" and then to "leading" in over 200 major industrial products [13] Group 2: High-End Manufacturing Achievements - The C919 large passenger aircraft has achieved normalized commercial operations, covering 16 cities and transporting over 2.05 million passengers in two years [14] - The "China Railway 1459" shield machine, a significant advancement in engineering machinery, has been developed to enhance efficiency and precision in construction [16] - The production of the first large cruise ship "Aida · Magic City" and the successful launch of a 16 MW offshore wind turbine mark significant milestones in high-end manufacturing during the "14th Five-Year" period [17] Group 3: Digital Transformation in Manufacturing - The integration of AI and robotics in manufacturing processes is transforming traditional industries, with companies like Zhejiang Youlu Robotics enhancing the capabilities of cleaning robots [18] - The implementation of the "Pangu" model in steel production has improved parameter prediction accuracy by over 5%, resulting in significant economic benefits [19] - As of March 2023, over 30,000 smart factories have been established in China, with a digital design tool penetration rate of 83.5% [19] Group 4: Green and Low-Carbon Initiatives - The establishment of the first 100% green electricity-connected zero-carbon industrial park in Dongying, Shandong, represents a significant investment in sustainable energy [22] - The construction of the world's largest compressed gas storage power station in Xinjiang showcases advancements in clean energy storage technology [22] - By the end of 2024, China aims to have cultivated 6,430 national-level green factories, contributing to 20% of the total manufacturing output [23]
东安动力:智能制造照亮转型之路
Ke Ji Ri Bao· 2025-08-28 02:45
Core Viewpoint - Dong'an Power is transforming from traditional manufacturing to intelligent manufacturing through the application of digital and smart technologies, significantly enhancing production efficiency and quality control. Group 1: Technological Innovation - Dong'an Power's production line has reduced the time required to debug from 3 days to 6 hours due to the implementation of digital twin technology [1] - The company has achieved over 80% automation in its production processes, utilizing industrial robots and CNC machine tools [5] - The introduction of AI in production has led to significant improvements in safety and efficiency, with automated systems replacing manual labor in various tasks [7] Group 2: Quality Control Transformation - Automated visual inspection systems have replaced 10 quality inspectors, using 6 industrial cameras to detect defects in real-time [6] - The integration of smart technologies has eliminated manual errors and enhanced the reliability of quality checks [6] Group 3: Data-Driven Operations - The manufacturing execution system (MES) allows real-time data sharing between production and the final assembly plant, enhancing operational transparency [8] - Key performance metrics include a 30% increase in production efficiency, a 12.5% reduction in product development cycles, and a 14.15% decrease in operating costs [9] Group 4: Employee Engagement and Innovation Culture - Dong'an Power fosters a culture of innovation among employees, encouraging them to contribute to process improvements and efficiency gains [10][11] - The company has implemented a reward system for small innovations, linking recognition to career advancement [11] Group 5: Strategic Development and Future Goals - Dong'an Power is expanding its technological capabilities into new areas, including rotor engine development for low-altitude applications [5] - The company aims to transition from traditional manufacturing to intelligent manufacturing, positioning itself as a leader in the automotive power sector [12]
2024年我国经济发展新动能指数比上年增长14.2%
Ke Ji Ri Bao· 2025-08-28 02:26
Group 1: Economic Development Indicators - The new economic development momentum index for 2024 is 136.0, representing a 14.2% increase from the previous year, driven significantly by the network economy and innovation [1] - The economic vitality index for 2024 is 130.9, with a growth of 14.5%, indicating robust economic activity with 27.37 million new business entities established throughout the year, averaging 24,000 new enterprises daily [1] - Investment in high-tech industries grew by 8.0%, outpacing overall investment growth by 4.8 percentage points, with high-tech manufacturing and services increasing by 7.0% and 10.2% respectively [1] Group 2: Innovation and Technology - The innovation-driven index for 2024 is 138.5, up by 13.2%, reflecting accelerated growth in technological investment and the strengthening of enterprise innovation capabilities [2] - Total R&D expenditure reached 3.6 trillion yuan, an increase of 8.3%, with basic research funding growing by 10.5% to 249.7 billion yuan [2] - The number of "specialized, refined, distinctive, and innovative" small giant enterprises reached 14,600, and the number of high-value invention patents per 10,000 people increased by 2.2 to 14 [2] Group 3: Network Economy - The network economy index for 2024 is 142.4, a 16.2% increase, highlighting its significant role in economic growth [2] - Mobile internet access traffic reached 3,376 billion GB, growing by 11.6%, and the number of 5G base stations reached 4.25 million, accounting for 33.6% of total mobile base stations [2] - Online retail sales amounted to 15.2 trillion yuan, a growth of 7.2%, while cross-border e-commerce exports reached 2.15 trillion yuan, increasing by 16.9% [2] Group 4: Industrial Transformation and Upgrading - The transformation and upgrading index for 2024 is 127.8, reflecting a 12.5% increase, indicating ongoing improvements in industrial capabilities [3] - The added value of strategic emerging industries continues to accelerate, with high-tech manufacturing value-added growing by 8.9%, now accounting for 16.3% of the total industrial value-added [3] - The share of non-fossil energy in total energy consumption increased by 1.8 percentage points, and electric vehicle exports surpassed 2 million units, with lithium battery exports exceeding 3.9 billion units, setting a new historical high [3]