Ke Ji Ri Bao
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【科技日报】“草原天眼”逐日追风——探秘我国首台行星际闪烁监测望远镜
Ke Ji Ri Bao· 2025-09-12 01:34
Core Viewpoint - The establishment of China's first interstellar flicker monitoring telescope, known as the "Grassland Eye," marks a significant advancement in the country's capabilities for ground-based observation of interstellar flickering, enhancing its position in global space weather research [1][3]. Group 1: Telescope Overview - The interstellar flicker monitoring telescope is a major piece of equipment under the national infrastructure project "Meridian Project Phase II," with its detection sensitivity at an internationally leading level [1][3]. - The telescope consists of a main station and two auxiliary stations, forming an equilateral triangle layout, with each station approximately 200 kilometers apart [2][3]. Group 2: Purpose and Functionality - The primary purpose of monitoring interstellar flickering is to conduct space weather research and disaster forecasting, as solar activities can lead to significant disturbances affecting Earth [3][5]. - The telescope can capture radio signals from cosmic sources that are disrupted by solar wind, allowing for the monitoring of solar storms and their potential impacts on satellites, communication, navigation, and power grids [5][6]. Group 3: Technical Innovations - The main station features three rows of parabolic antennas, each measuring 140 meters in length and 40 meters in width, making it the largest parabolic radio telescope in China [6][7]. - Key technological breakthroughs include high-precision synchronization control and a digital multi-beam receiving system, which have been fully domestically developed [6][7]. Group 4: Performance and Impact - The "Grassland Eye" can simultaneously receive signals from multiple directions, with a detection sensitivity capable of capturing cosmic radio signals weaker than mobile phone signals by a factor of 10 billion [6][7]. - Since its operation, the telescope has demonstrated exceptional performance, successfully recording significant solar storm events and contributing valuable data for space weather forecasting [7].
创新点亮未来生活——2025年服贸会描绘民生服务新图景
Ke Ji Ri Bao· 2025-09-12 01:13
Group 1: Event Overview - The 2025 China International Service Trade Fair (CIFTIS) opened in Beijing, showcasing innovative products that integrate cutting-edge technology across various sectors including environment, education, and cultural tourism [2][3] - The event highlights the deep integration of technology into daily life, with products designed to enhance industry development and improve user experience [2] Group 2: Water Environment Scout - The "Water Environment Scout," developed by Chip Vision (Beijing) Technology Co., utilizes quantum dot spectral sensing technology for real-time water quality monitoring [3][4] - This system can detect multiple water quality indicators with second-level precision and provides early warnings for pollution, aiding in pollution source tracing [3][4] - The system has been implemented in over 20 cities, significantly improving pollution source identification efficiency compared to traditional methods [4] Group 3: Smart Sports Technology - The Smart Tennis Hawk-Eye system, developed by Beijing Ruige Technology Co., employs high-speed cameras and advanced algorithms to resolve disputes in tennis matches by providing precise 3D trajectory simulations [5][6] - This system enhances training efficiency by offering personalized training plans and real-time performance data [6] - The technology has been adapted for other sports, including certified systems for football and table tennis, used in international competitions [6] Group 4: Educational Innovations - The "Jingwa" smart companions, "Jingxiaojian" and "Jingxiaozhuang," focus on the health and physical activity of middle school students, utilizing AI and multi-modal sensing technology [7][8] - These devices collect health data and provide personalized exercise plans, aiming to integrate technology into the educational experience [7][8] - The initiative is positioned as a model for future smart education development across China [8] Group 5: AR Educational Tools - The AR building blocks for animal science, developed by Beijing Zoo and Yuanli Technology, transform traditional education into an interactive experience using augmented reality [10][11] - This product allows children to engage in hands-on learning while fostering interest in science and nature through immersive experiences [10][11] - Future plans include expanding educational functionalities and integrating with school curricula to enhance ecological awareness among youth [11]
打着“安全”旗号 FCC搅乱全球供应链
Ke Ji Ri Bao· 2025-09-11 23:53
FCC主席布伦丹·卡尔如此解释新规出台的理由:受制于外国对手的"不可靠实验室"可能会批准不安全 的设备进入美国市场。 按照美国政府规定,所有进口到美国的具有无线电发射功能的电子产品,在上市或进口前都必须在获得 FCC许可的实验室通过合规性测试。据统计,FCC此前授权175家中国实验室等认证机构开展测试,数 量超过美国本土,美国市场上约75%的电子产品在中国测试认证。 7∶175,看起来此次被撤销许可的中国实验室只占总数的一小部分。但值得注意的是,FCC正在就将撤 销范围扩大到中国等"外国敌对国家"管辖范围内的任何实体征求意见。在不久的将来,所有中国实验室 获得的FCC许可很可能会被全部撤销。 日前,美国联邦通信委员会(FCC)宣布,已经启动程序撤销7家中国实验室对进入美国市场电子产品 的测试认证许可,另有4家中国实验室的许可已经到期且不再续签。此举依据为今年5月FCC投票通过的 一项新规:禁止与美国政府"黑名单"有关的中国实验室测试在美国使用的手机、电脑等电子产品。 也就是说,在FCC摆上台面的安全借口下,可能还藏着破坏中国电信制造业的集群效应和战略优势、促 进相关产业回流美国的深层目的。 目的未必能实现,但 ...
全景AI技术精准监测城市道路碳排放
Ke Ji Ri Bao· 2025-09-11 23:50
Core Viewpoint - Chinese scientists have developed a new technology for urban carbon emission monitoring based on "Panoramic Artificial Intelligence (Panoramic AI)", which provides high-precision real-time tracking of carbon dioxide emissions from road traffic, supporting low-carbon management in cities [1][2]. Group 1: Technology Development - The new technology addresses the limitations of traditional carbon emission inventories, which have low spatial resolution and cannot accurately trace emission sources or analyze their causes [1]. - The research team collaborated with the Shenzhen Ecological Environment Monitoring Center to create a Panoramic AI carbon emission observation platform that integrates AI technology with panoramic cameras, high-precision greenhouse gas analyzers, and meteorological sensors [1]. Group 2: Performance and Application - The Panoramic AI carbon emission observation platform achieves high-precision identification of emission sources, with an average accuracy exceeding 93% [1]. - The system can analyze the impact of various factors on emissions, including traffic conditions, surrounding landscapes, and meteorological conditions, revealing the spatiotemporal dynamics and driving mechanisms of carbon emissions [1]. - The technology has been implemented in Shenzhen, Guangdong Province, and is expected to be promoted to more cities for assessing the actual effects of urban road carbon dioxide reduction [2].
633项农业科技成果亮相中国北京种业大会
Ke Ji Ri Bao· 2025-09-11 23:48
Core Insights - The 32nd China Beijing Seed Industry Conference showcased 633 agricultural technology achievements from 143 units, featuring over 300 new products and 173 new varieties, technologies, and policies [1] - Six cooperation agreements were signed during the opening ceremony, including three international seed industry collaborations and two agreements between Beijing, Tianjin, and Hebei [1] - The conference aims to enhance the seed industry through collaboration and innovation among the Beijing-Tianjin-Hebei region, promoting resource flow and cooperation in research and development [1] Industry Developments - The conference included a technology achievement exchange experience event, covering an area of 4,500 square meters with various zones for showcasing innovations [2] - The event has positioned itself as a world-class platform for seed industry exchange, attracting global experts and promoting mutual benefits through the introduction of advanced foreign technologies and quality varieties [2] - Future goals include significant breakthroughs in seed industry revitalization, focusing on improving genetic resource identification, breeding innovation, and enhancing the modern level of seed industry bases [2]
新技术为狡猾癌细胞贴上“通缉令”
Ke Ji Ri Bao· 2025-09-11 23:47
Core Insights - The research team at the Chinese Academy of Sciences has developed an engineered nanoenzyme that responds to deep red light or ultrasound, transforming proximity labeling technology into a powerful therapeutic tool [1][2] - The study, published in the journal Nature, demonstrates that artificially increasing antigen density on tumor cells can significantly enhance immune recognition and killing efficiency [1][2] Group 1 - The engineered nanoenzyme creates a strong artificial target on cancer cells, which allows for the effective aggregation of T cell receptors, triggering a potent attack mode against the targeted area [2] - In mouse experiments, the tumor volume was reduced by over 80%, and the immune system was activated to suppress untreated distant tumors, indicating a systemic anti-tumor effect [2] - Long-term studies show that cured mice exhibit complete immunity to secondary tumor challenges, suggesting the induction of long-lasting immune memory akin to vaccination against tumors [2] Group 2 - The research indicates that the new method significantly improves immune activation and killing efficiency compared to traditional antigen amplification methods [2] - The study's findings open new avenues for developing smarter and more efficient next-generation immunotherapies [2]
国产离子回旋加热系统通过验收
Ke Ji Ri Bao· 2025-09-11 23:45
(文章来源:科技日报) 等离子体物理研究所研究员秦成明介绍,离子回旋加热系统的成功验收,标志着项目团队成功突破该系 统核心技术瓶颈,实现了全链路国产化与自主可控,具有重要应用价值。其相关技术还可拓展应用于运 载推进、医疗健康、电子科技等领域。 11日,离子回旋加热系统顺利通过专家组验收,标志着我国在高功率射频加热技术领域取得新突破。该 系统由中国科学院合肥物质科学研究院等离子体物理研究所(以下简称"等离子体物理研究所")牵头承 担,系国家"十三五"重大科技基础设施聚变堆主机关键系统综合研究设施(CRAFT)项目关键子系 统。 离子温度是聚变堆"点火"的关键参数。在氘氚聚变反应中,离子温度需达到上亿摄氏度并自持燃烧,离 子回旋可直接加热等离子体中的离子,有效提升反应概率,但其波源核心器件长期受国外垄断制约。面 向未来聚变堆需求,CRAFT项目团队围绕发射机核心器件兆瓦级电子四极管研制、大功率合成器研 制、聚变堆天线设计等关键技术,历经5年技术攻关,实现兆瓦级电子四极管的研发和国产化;创新设 计多路大功率合成网络及低损耗传输器件,实现了40—80MHz宽频段2MW功率、千秒量级稳定输出, 完成兆瓦级功率合成与传输 ...
“草原天眼”逐日追风——探秘我国首台行星际闪烁监测望远镜
Ke Ji Ri Bao· 2025-09-11 23:43
"这台望远镜是国家重大基础设施'子午工程二期'的重大设备之一,当地人称它为'草原天眼',其探测灵 敏度处于国际领先水平。"刚到达观测站,行星际闪烁监测望远镜首席科学家、空间中心研究员颜毅华 就热情地介绍起来,它的建成标志着我国行星际闪烁地基观测能力跃居世界前列。 预警"太空炸弹" 广袤的草原上,微风拂过,草浪泛起翠玉般光泽。放眼望去,3排硕大的银白色钢架如同拔地而起的巨 人,静静伫立。"看,那些抛物柱面框架结构就是主望远镜了。"车上的工作人员指着远处的"巨人"告诉 科技日报记者。 前不久,跟随中国科学院国家空间科学中心(以下简称"空间中心")科研人员,记者来到地处内蒙古锡 林郭勒盟的空间中心明安图野外科学观测研究站,探秘我国首台行星际闪烁监测望远镜。 "什么是行星际闪烁?"刚下车,记者就迫不及待地问颜毅华。 "所谓行星际闪烁,就是遥远的宇宙射电源发出的无线电信号,在穿过太阳系时,被不均匀的太阳风'搅 乱'了路径,导致地球上接收到的信号出现快速、不规则变化,就像星星在太空中眨眼睛。"颜毅华解释 道,"这类似于我们透过波动的空气看远处的灯光,会有忽明忽暗的感觉。" 说话间,记者随颜毅华来到控制室。在这里,工作人员 ...
亚洲第一大露天矿坑:从“工业伤疤”变身“矿坑森林”
Ke Ji Ri Bao· 2025-09-11 09:26
Core Viewpoint - The ecological restoration of the Fushun West Open-pit Mine is crucial due to its long history of coal mining and the resulting environmental degradation, with significant efforts being made to address geological hazards and restore the ecosystem [3][5][6]. Group 1: Historical Context and Environmental Issues - The Fushun West Open-pit Mine has been in operation since 1901, producing 280 million tons of coal and 530 million tons of oil shale, contributing significantly to China's economic development [3]. - The mine has left behind a massive pit measuring 6.6 kilometers long and 2.2 kilometers wide, leading to severe environmental issues such as vegetation destruction, land degradation, and ecological imbalance [3]. - Geological hazards have been escalating, with notable incidents of ground fissures and subsidence occurring from 2009 to 2013, indicating a critical need for ecological governance [3][4]. Group 2: Governance and Restoration Efforts - In 2016, the Shenyang Research Institute began systematic research on the comprehensive governance of the West Open-pit Mine, focusing on various geological hazards and their underlying causes [4]. - The project team has proposed multiple remediation measures, including slope reduction, fire root removal, and groundwater drainage to address the complex geological issues [4]. - A dedicated project team was established in August 2021 to conduct on-site research and develop strategies for disaster governance, fire prevention, and ecological restoration [5]. Group 3: Ecological Restoration Plan - The ecological restoration plan aims to complete the afforestation of 8.16 million square meters within three years, with a total area of 9.79 million square meters planned for restoration [5]. - The project incorporates a comprehensive approach, utilizing engineering, botanical, and management measures to improve soil quality and enhance ecological safety [6]. - As a result of these efforts, the vegetation coverage in the mine area has increased from 14% to 63%, transforming the site into a green oasis and a recreational area for the local community [6][7].
扩大开放、深化合作、引领创新——写在2025年中国国际服务贸易交易会开幕之际
Ke Ji Ri Bao· 2025-09-11 09:26
9月10日至14日,2025年中国国际服务贸易交易会(以下简称"服贸会")在北京举办。 商务部副部长盛秋平介绍,过去一年来,我国全面实施跨境服务贸易负面清单,加快推进服务业扩大开 放综合试点示范,稳步推进跨境服务贸易和服务业梯度开放。主动对接国际高标准经贸规则,高质量实 施《区域全面经济伙伴关系协定》。持续加强服务贸易标准化工作,推动服务领域规则、规制、管理、 标准相通相容。 "今年我们将继续利用服贸会这一服务领域的重要开放平台,高规格举办全球服务贸易峰会,发布《中 国服务贸易发展报告》等多项权威报告,举办170多场论坛和洽谈推介活动。"盛秋平说。 今年服贸会将有70余个国家和国际组织设展办会,主宾国澳大利亚将组建历届服贸会期间规模最大的主 宾国展团,组织澳新银行、Canva等世界500强和独角兽企业参展。主宾省安徽将展示本地科技创新和 服务业开放最新成果。 "服贸会已成为汇聚前沿趋势的中心、开放合作的加速器、创新活力的展示窗口。安徽省商务部门及相 关参会企业对本次大会的举办充满期待。"安徽省商务厅副厅长张弘强说。 搭建合作桥梁 2012年以来,服贸会已成功举办11届,见证了中国服务业和服务贸易开放创新、蓬勃 ...