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通信技术试验卫星二十三号成功发射
Ke Ji Ri Bao· 2025-12-20 14:40
Core Viewpoint - The successful launch of the Long March 5 rocket on December 20, 2025, marks a significant achievement for China's aerospace industry, demonstrating advancements in satellite communication technology and the capabilities of the Long March series rockets [1][3]. Group 1: Launch Details - The Long March 5 rocket was launched from the Wenchang Space Launch Site at 20:30 on December 20, 2025, successfully placing the Communication Technology Test Satellite No. 23 into its designated orbit [1]. - This launch represents the 618th flight of the Long March series of rockets, highlighting the extensive operational history and reliability of this launch vehicle [3]. Group 2: Satellite and Rocket Specifications - The Communication Technology Test Satellite No. 23 was developed by the Fifth Academy of China Aerospace Science and Technology Corporation, focusing on multi-band and high-speed satellite communication technology verification [3]. - The Long March 5 rocket features a fairing with a diameter of 5.2 meters and a height of 18.5 meters, designed to better accommodate the development needs of large satellite platforms and enhance the rocket's capability to perform diverse missions [3].
奶、肉牛联营生产高品质牛肉技术模式研讨会举行
Ke Ji Ri Bao· 2025-12-20 11:09
大会还特别策划了"奶牛、肉牛聚链联营生产技术合作模式"主题对话环节,专家学者围绕我国牛肉主要 消费区域特点、肉牛健康养殖关键技术与案例等内容深入交流,共谋奶、肉牛产业高质量协同发展之 路。 据悉,大会前期还举办了"肉牛高质量关键生产技术"专场培训,内容涵盖《三维效率模型:重塑肉牛牧 场竞争力》《从"吃得饱"到"吃得好":营养升级如何重塑肉牛产业竞争力》《精准饲喂技术在规模养殖 场的应用》《基于种养结合的北方肉牛粪污处理利用技术》等。专家现场答疑解惑,切实解决产业一线 的实际困惑。 12月17日,以"奶、肉牛融合,科企合力赋能"为主题的"奶、肉牛联营生产高品质牛肉技术模式研讨会 暨荷斯坦阉牛生产大理石纹牛肉技术推介会"在哈尔滨圆满落幕。 本次会议聚焦乳肉兼营模式创新,依托奶牛规模化养殖基础,研讨荷斯坦牛优质牛肉高效育肥技术,旨 在释放奶牛养殖场优质育肥牛源潜力,搭建全产业链交流合作平台,推动产业协同升级。 来自国家奶牛、肉牛牦牛产业技术体系及各省(自治区、直辖市)奶、肉牛科技创新团队的专家,行业 协会代表,农业科研院校师生,全国奶牛、肉牛产业链相关企业负责人,肉牛经销商、采购商代表近 300人齐聚现场,共话发展 ...
1400小时超长待机 我科学家破译锌溴液流电池长寿命“密码”
Ke Ji Ri Bao· 2025-12-20 07:42
Core Insights - The research team led by Li Xianfeng from the Dalian Institute of Chemical Physics has made significant progress in the development of a new bromine-based flow battery system, achieving proof of concept for long-life zinc-bromine flow batteries and scaling up the system [1][4] Group 1: Technology Development - The new bromine-based flow battery relies on a dual electron transfer reaction system, which effectively reduces the concentration of bromine ions (Br) in the electrolyte, thereby enhancing the battery's energy density and lifespan [2][3] - By introducing amine compounds as bromine scavengers in the bromine electrolyte, the team has successfully converted generated Br into brominated amine compounds, significantly lowering the corrosiveness of the electrolyte [2] Group 2: Performance Metrics - In tests scaled to a 5kW system, the zinc-bromine flow battery demonstrated stable operation for over 700 cycles at a current density of 40 mA cm-2, with a total lifespan exceeding 1400 hours and an energy efficiency of over 78% [3] - The use of a low-cost and less corrosion-resistant SPEEK membrane did not affect the battery's performance, as no corrosion was observed in key materials such as current collectors, electrodes, and membranes after cycling [3] Group 3: Implications for Future Applications - This research provides a new approach for designing long-life bromine-based flow batteries, laying the groundwork for further applications and commercialization of zinc-bromine flow batteries [4]
科技日报:《地球系统预报发展战略(2025—2035年)》正式发布
Ke Ji Ri Bao· 2025-12-19 11:22
Core Viewpoint - The China Meteorological Administration has officially released the "Earth System Forecast Development Strategy (2025-2035)", aiming to establish an autonomous and internationally advanced earth system forecasting system by 2035, enhancing the ability to respond to climate change and extreme weather events [1][2]. Group 1: Strategic Goals - The strategy outlines a ten-year plan for the development of earth system forecasting technology, emphasizing the interaction between various components of the earth system to improve weather and climate prediction capabilities [1]. - By 2035, the goal is to fully establish a unified framework for the earth system forecasting system, significantly enhancing the simulation and prediction capabilities of multi-scale processes within the earth system [2]. Group 2: Technological Pathways - The strategy introduces an innovative "dual-driven, intelligent integration" core technological pathway, combining physical-based numerical forecasting with artificial intelligence to extract forecasting patterns from vast amounts of data [2]. - The next five years will focus on operationalizing a new generation of earth system forecasting models and establishing a unified framework for meteorological AI models, along with launching the first generation of earth system digital twin service platforms [2]. Group 3: Applications and Benefits - The enhanced forecasting system will improve early warning capabilities for disasters such as typhoons, heavy rainfall, and extreme heat, thereby supporting disaster prevention and reduction efforts [2]. - The system will provide more accurate data products for various industries, including agriculture, renewable energy, transportation, and finance, and will serve as a critical scientific basis for addressing climate change and achieving carbon neutrality goals [2].
我国首套全国产化VTS系统交付使用
Ke Ji Ri Bao· 2025-12-19 06:10
12月17日,大连船舶交通管理系统更新改造工程项目通过现场验收,成为国内首套正式交付使用的全国 产化VTS,这套仅用四个月建成的"海上天网",国产化率达100%。这不仅是技术上的自主革新,更是 海上安全监管迈向智能化、国产化的重要一步。 繁忙的海上航道,成千上万艘船舶来来往往,却总能互不干扰、有序通行,这背后,藏着一套超给力的 海上智慧大脑——VTS(船舶交通管理系统)。 (文章来源:科技日报) 这是全国海事系统首例全信创、规模化应用的VTS项目,为行业推动关键技术自主创新提供了完整范 本。随着该系统投入运行,将有效助力水域船舶通航效率和海事监管能力提升,辽宁海事局将推动水上 安全监管向"精准预警、智能处置、高效协同"深化,守护渤海湾水上安全。 大连海事局办公室副主任黄瀚瑶向科技日报记者介绍,VTS堪称"国产化硬核担当"——核心采用完全自 主研发的国产化雷达及处理平台,从服务器等硬件设备,到所有软件系统,实现了全链条国产化替代, 真正做到技术自主可控、规模化应用,打破了对国外技术的依赖。 VTS接入辽宁19座雷达站及山东北隍城雷达信号,实现跨区域监控融合。老铁山水道、辽鲁客滚航线等 重点水域动态,一屏尽览。具 ...
【科技日报】新技术实现纳米尺度量子多体纠缠探测
Ke Ji Ri Bao· 2025-12-19 03:14
记者18日从中国科学技术大学获悉,该校教授王亚和北京师范大学副教授王评合作,在量子多体系 统探测上取得重要进展。研究团队提出一种名为"多维关联压印"的全新方法,成功将难以直接观测的高 阶量子关联信息"编码"至一个局域量子探针的噪声信号中,从而实现对复杂量子系统内部关联的间接高 清探测。相关成果日前在线发表于《物理评论快报》。 理解量子多体系统的非平衡动力学是现代物理学的核心前沿。其中的关键在于探测系统内部粒子间 的高阶关联,尤其是量子纠缠。但对于缺乏单粒子独立操控能力的复杂系统的探测,一直是亟待解决的 难题。 这项研究为表征缺乏个体寻址能力的量子多体系统开辟了一条具有通用潜力的实验路径。它不仅适 用于基础物理研究,未来还有望应用于新型量子材料的表征,以及对日益复杂的量子模拟器的有效验 证,从而推动量子科技的发展。 (原载于《科技日报》 2025-12-19 01版) 此次研究团队开发的"多维关联压印"技术,其核心思想是将一个无法直接测量的复杂多体系统与一 个高度敏感的局域量子探针耦合。多体系统的复杂关联会作为独特的"印记","压印"在探针相对容易读 取的时间涨落频谱上。通过解读这些频谱"密码",便能反推出系统 ...
【科技日报】《科学》杂志评出2025年度十大突破
Ke Ji Ri Bao· 2025-12-19 03:14
Group 1: Renewable Energy Development - Global renewable energy, led by China, is rapidly growing, with solar and wind energy dominating the increase in power generation, surpassing fossil fuels in total output [2] - China is a key player in this transition, significantly expanding solar panel, wind turbine, and lithium battery storage systems, solidifying its global leadership [2] - The low-cost manufacturing in China has facilitated the rapid adoption of small rooftop photovoltaic systems, providing reliable and economical energy for millions of households in Europe, South Asia, and the Global South [2] Group 2: Genetic Research and Medical Advances - Customized gene editing has been successfully applied in treating a rare genetic disease in a human patient, marking a significant milestone for personalized gene therapy [3] - Two new drugs for gonorrhea have been approved by the FDA, representing the first new treatments for the disease in decades, with significant efficacy and safety profiles [4] - A key gene, QT12, has been identified by Chinese researchers to help rice withstand high nighttime temperatures, leading to a 78% increase in yield under such conditions [13] Group 3: Archaeological and Scientific Discoveries - The discovery of the Harbin ancient human remains has confirmed them as Denisovans, providing insights into their appearance and lineage [9] - The construction of the Vera C. Rubin Observatory in Chile will enable unprecedented astronomical observations, potentially leading to discoveries of new celestial bodies and insights into dark matter and energy [8] Group 4: Advances in Physics and Transplantation - The final measurement of the muon magnetic anomaly has achieved unprecedented precision, enhancing the understanding of particle physics [11] - Significant breakthroughs in xenotransplantation have been made, with genetically engineered pig organs showing extended viability in human patients, moving closer to clinical application [12] Group 5: AI in Scientific Research - Large language models (LLMs) have demonstrated remarkable capabilities in scientific research, achieving breakthroughs in mathematics, chemistry, and biology, thus enhancing research efficiency and discovery [10]
【科技日报】念起物从,脑机接口拓展患者生活边界
Ke Ji Ri Bao· 2025-12-19 03:14
Group 1 - The core viewpoint of the articles highlights the significant advancements in brain-computer interface (BCI) technology in China, particularly its application in enhancing the quality of life for patients with severe disabilities [1][2] - A recent experiment demonstrated a paralyzed patient controlling an electric wheelchair and a robotic dog using an invasive brain-computer interface, marking a shift from basic interaction capabilities to real-world applications [1] - The research emphasizes the importance of addressing patients' multidimensional life needs, moving beyond mere functional restoration to enabling autonomy and social participation [1] Group 2 - China's development path in BCI technology is becoming clearer, with national guidelines and multi-departmental initiatives promoting ethical research and clinical application [2] - The collaborative model of "research-clinical-industry" is accelerating the translation of scientific discoveries into real-world benefits for patients [2] - Challenges remain in ensuring the long-term safety, system stability, and affordability of invasive BCIs, as well as improving the interpretation of neural signals and human-computer interaction [2]
《科学》杂志评出2025年度十大突破
Ke Ji Ri Bao· 2025-12-19 02:44
Group 1: Renewable Energy Development - Global renewable energy, led by China, is rapidly growing, with solar and wind energy dominating the increase in power generation [2] - China's large-scale development of solar panels, wind turbines, and lithium battery storage systems has solidified its leading position in the global renewable energy market [2] - The proliferation of low-cost rooftop photovoltaic systems in China is providing reliable and economical energy solutions for millions of households in Europe, South Asia, and the Global South [2] Group 2: Genetic Research and Medical Advances - Customized gene editing has been successfully applied in clinical settings for the first time, paving the way for treatments of other rare diseases [3] - Two new drugs for gonorrhea have been approved by the FDA, marking the first new treatments for the disease in decades, with significant efficacy and safety profiles [4] - Research has shown that neurons can transfer mitochondria to cancer cells, enhancing their energy metabolism and promoting cancer metastasis, particularly in brain metastases [5] Group 3: Archaeological and Scientific Discoveries - The discovery of the Harbin ancient human remains has confirmed that they belong to the Denisovans, solving a long-standing mystery regarding their appearance [7] - The Vera C. Rubin Observatory in Chile will revolutionize astronomical observations by scanning the entire sky every three days for ten years, potentially discovering new celestial bodies and studying cosmic phenomena [6] Group 4: Advances in AI and Computational Research - Large language models (LLMs) have demonstrated remarkable capabilities in scientific research, achieving significant breakthroughs in mathematics and chemistry [8][9] - AI systems have rapidly identified new drug candidates for liver fibrosis and replicated complex biological mechanisms, showcasing the potential of AI in accelerating scientific discovery [9] Group 5: Transplantation Innovations - Key breakthroughs in xenotransplantation have been achieved, with genetically modified pig organs showing extended viability in human patients, bringing the field closer to clinical application [11] Group 6: Agricultural Biotechnology - Chinese researchers have identified the QT12 gene, which helps rice withstand high nighttime temperatures, leading to significant improvements in yield and quality under heat stress conditions [12]
六部门发文提升煤炭清洁高效利用水平
Ke Ji Ri Bao· 2025-12-19 02:37
Core Viewpoint - The "2025 Edition of Benchmark Levels and Baseline Levels for Clean and Efficient Utilization of Coal" has been jointly issued by six departments, replacing the 2022 version, to enhance energy efficiency and environmental standards in coal utilization [1][2] Group 1: Policy Updates - The new edition aims to improve the energy efficiency and pollution control levels in coal utilization, with a target to reduce the share of coal in total energy consumption from 56.7% in 2020 to 53.2% by 2024 [1] - The "2025 Edition" expands the scope of applicable areas, adding two new fields: coal-to-natural gas and coal-to-oil, in addition to the previously defined nine key areas [2] Group 2: Implementation Guidelines - New coal development projects and existing projects with conditions are encouraged to reach benchmark levels for clean and efficient utilization [2] - Existing projects that fall below the baseline levels are guided to undertake orderly upgrades for cleaner and more efficient coal utilization, with a focus on reducing pollution and carbon emissions [2] Group 3: Standards and Indicators - The "2025 Edition" revises the indicator levels based on the latest national standards and policies from the past three years, updating relevant indicators in areas such as coal-fired power generation and coal-based methanol [2] - The updated standards reflect new requirements and aim to strengthen regulatory constraints and guidance in the coal sector [2]