Ke Ji Ri Bao
Search documents
低空逐梦 “祥云”翱翔——国产载人飞艇“祥云”迎来商业化新突破
Ke Ji Ri Bao· 2025-11-27 02:30
Core Insights - The AS700 "Xiangyun" manned airship has received 18 new orders, marking the largest single order in the domestic civil manned airship sector, indicating strong market recognition of domestic advanced aviation products and providing robust momentum for the development of China's low-altitude economy [1] Group 1: Product Features - The "Xiangyun" airship measures 50 meters in length, has a maximum range of 700 kilometers, and can carry 10 passengers, offering a unique low-altitude sightseeing experience at an optimal viewing height of 100-300 meters [2] - The airship's design allows for stable and quiet flight, making it suitable for low-altitude tourism, with passengers reporting a smoother experience than that of boats [2] Group 2: Safety Technologies - The safety of the "Xiangyun" airship is enhanced by its nearly spherical lift-generating envelope, which minimizes the risk of severe airflow separation and stall [3] - Advanced safety features include high-strength, low-leakage, and low-temperature-resistant composite materials for the gas envelope, emergency helium release, and water ballast dumping capabilities, ensuring safe descent in case of power loss [3] - The airship employs vector control technology, allowing thrust vectoring from -120° to +90°, which aids in vertical short-distance takeoff and landing, further enhancing safety [3] Group 3: Application Scenarios - Currently, the primary application of the "Xiangyun" airship is in low-altitude sightseeing tourism, with plans to expand into geological exploration and urban security [4] - In geological surveying, the airship can carry high-precision mapping equipment and remote sensing sensors, providing a stable platform for tasks such as geological exploration and environmental sampling [4] - In urban public service, the airship can be utilized for aerial security patrols during large events and traffic monitoring, contributing to urban image display [4] - The commercialization of the "Xiangyun" airship is expected to stimulate the entire industry chain, from research and manufacturing to operation and infrastructure development, marking the beginning of a new era for general aviation in China [4]
【科技日报】南沙永暑礁:从海上戈壁到绿树成荫
Ke Ji Ri Bao· 2025-11-27 02:19
Core Viewpoint - The ecological restoration efforts on the Nansha Yongshu Reef have led to the establishment of a near-natural salt marsh, significantly improving the local environment and biodiversity [1][2]. Group 1: Ecological Restoration Efforts - The Yongshu Reef has transformed from a barren coral sand beach to a green oasis, guided by the philosophy of "lucid waters and lush mountains are invaluable assets" [1]. - The establishment of a near-natural salt marsh is crucial for maintaining the ecosystem, regulating hydrology, and protecting the coastline [2]. - The survival rate of plants has increased to over 90% due to innovative soil improvement techniques, reducing the salinity of the reef sand from 1.38‰ to 0.443‰ [2]. Group 2: Biodiversity Enhancement - The number of plant species that can be cultivated on Yongshu Reef has increased from fewer than 20 to over 120, surpassing many urban planning standards for green space [3]. - The implementation of a marine environmental monitoring system allows for real-time tracking of water quality and coral health, contributing to the protection of marine biodiversity [3][4]. Group 3: Technological Integration - The monitoring system includes underwater cameras that provide continuous surveillance of the marine environment, enabling timely responses to ecological threats such as coral die-offs caused by crown-of-thorns starfish [3][5]. - The use of drones for marine debris inspection and remote sensing technology for monitoring vegetation growth enhances the efficiency and effectiveness of ecological management efforts [5].
【科技日报】研究显示粉尘成分影响海洋碳汇效率
Ke Ji Ri Bao· 2025-11-27 02:19
"这种气候调节作用不仅取决于粉尘的总量,更与粉尘的来源和成分密切相关,但目前学术界对粉 尘的来源和构成仍缺乏系统认知。"论文第一作者兼共同通讯作者、中国科学院青藏高原研究所研究员 昝金波告诉记者。 在这项研究中,科研人员发现,自新生代以来,全球主要海盆的粉尘沉积量呈现出阶梯式增长趋 势,并且这一增长趋势与北半球冰盖扩张以及亚洲、北美洲、非洲等源区的干旱化进程同步。 研究进一步揭示,粉尘对不同海域的影响存在显著差异。在南大洋,粉尘是冰期亚南极海域的关键 铁源,有效促进了浮游植物生产力提升;而在北太平洋,其影响更为复杂——直到中更新世,随着亚洲 粉尘中磷和二价铁含量的提高,浮游植物生产力才逐步增加,并且浮游植物群落逐步由颗石藻向固碳能 力更强的硅藻转变,这显著提升了海洋固碳能力。数据表明,源自青藏高原冰川作用的亚洲粉尘营养含 量远高于北非粉尘,其施肥潜力存在本质区别。 通过系统分析全球22条海洋岩芯粉尘记录,来自中国科学院青藏高原研究所等单位的科研人员,成 功揭示了新生代以来全球粉尘释放与海洋粉尘沉积量增加的驱动机制。相关研究成果日前在线发表于 《自然综述:地球与环境》。 本次研究指出,全球变冷、冰盖侵蚀与强风, ...
激发产业发展新动能丨用好大赛“支点” 构筑“双创”高地
Ke Ji Ri Bao· 2025-11-27 02:10
科技日报记者 金凤 合成生物学,通过对生物体的底层"编程",重塑生物系统的交叉学科,正为医疗健康、食品、能源 等行业发展注入新活力。11月25日,第十四届中国创新创业大赛合成生物与生物制造专业赛(以下简 称"专业赛")半决赛、决赛在江苏常州举办。来自全国各地的44支团队,在这里寻找科技创新与产业创 新"双向奔赴"的聚合点。 "常州将加快未来产业发展作为突破发展瓶颈、优化产业结构、重构城市竞争优势的核心举措,重 点布局了包括合成生物在内的'6+X'未来产业赛道。"常州市委常委、副市长方靖表示,常州已集聚合成 生物相关领域企业203家,预计今年产业产值将超150亿元。 抢抓产业发展风口 中国生物技术发展中心副主任郑玉果在决赛开幕式致辞中介绍,当前,我国的合成生物与生物制造 整体水平已经位居世界第二梯队前列。关键技术和基础前沿领域不断取得新突破,生物制造产业规模居 全球第一。 近年来,我国各地为合成生物与生物制造产业发展营造生态,其中北京、天津、上海等24个省 (区、市)为合成生物与生物制造出台了专项政策。 工业和信息化部火炬中心副总工程师李文雷表示,此次专业赛不止于一场比赛,而是通过"赛事选 拔+资本助力+产业对 ...
打通“最后一公里”,让油茶“金种子”花开满园
Ke Ji Ri Bao· 2025-11-27 02:10
Core Viewpoint - The oil tea industry is undergoing a transformation driven by technological innovation, but faces challenges in market conversion of high-value products developed in laboratories [1][2]. Group 1: Industry Challenges - The oil tea industry is experiencing a structural contradiction where strong research capabilities do not translate into effective market conversion, leading to a surplus of prototypes and a lack of commercial products [1]. - The case of Fujian Jiuzhan Agriculture's tea oil chocolate illustrates the difficulties in mass production due to funding and market channel limitations, despite its high-quality attributes [1]. Group 2: Government and Enterprise Roles - The government is encouraged to act as a "booster" by facilitating the transformation of scientific achievements into marketable products, including the establishment of modern industrial parks that integrate processing, research, and brand incubation [2]. - Enterprises are urged to take the lead in market development and conversion, with examples such as the collaboration between Fujian Jiuzhan Agriculture and universities leading to innovative products like tea oil chocolate [2]. Group 3: Future Development and Trends - The high-quality development of the oil tea industry is seen as a systematic project that requires collaboration among media, industry associations, and enterprises to promote health and quality standards [4]. - Future advancements in the oil tea sector may include gene editing for "super oil tea," artificial intelligence for smart planting, and blockchain for full-chain traceability, shifting the value of tea oil from mere cooking oil to health products [4].
贯彻落实党的二十届四中全会精神·权威访谈丨锚定科技强国目标 加快实现高水平科技自立自强——访科技部党组书记、部长阴和俊
Ke Ji Ri Bao· 2025-11-27 02:02
Core Viewpoint - The 20th Central Committee of the Communist Party of China has outlined a grand blueprint for the next five years, emphasizing the importance of technological self-reliance and innovation as a foundation for modernization and economic development [1][9]. Group 1: Achievements in Technological Innovation - The "14th Five-Year Plan" period has been marked by significant milestones in China's technological innovation, with historical achievements and transformations occurring under the leadership of the central government [3]. - By 2024, total R&D investment is projected to reach 3.63 trillion yuan, with an R&D intensity of 2.69%, and the number of R&D personnel is the highest in the world [4]. - Basic research funding has increased to 250.09 billion yuan, a growth of over 70% since 2020, with China leading in high-level international journal publications and patent applications for five consecutive years [4]. Group 2: Integration of Technological and Industrial Innovation - The added value of high-tech manufacturing industries has increased by 42% compared to the end of the "13th Five-Year Plan," with the "three new" economies accounting for 18% of GDP [5]. - Major technological achievements include the operationalization of the "Tianhe" space station, the successful return of the "Chang'e 6" lunar mission, and the commercial flight of the C919 aircraft, among others [5]. - The integration of technological and industrial innovation is seen as essential for fostering new productive forces and enhancing competitiveness [12]. Group 3: Education, Technology, and Talent Development - The integration of education, technology, and talent development is crucial for achieving high-level technological self-reliance, with a focus on aligning educational programs with technological and industrial needs [15]. - Future efforts will include enhancing the synergy between technology and education, improving talent evaluation systems, and fostering a conducive environment for innovation [16]. - The goal is to create a virtuous cycle that enhances the overall effectiveness of the national innovation system, supporting China's modernization efforts [15].
深海探索和海洋环境预测有了全新工具 两大海洋AI大模型正式发布
Ke Ji Ri Bao· 2025-11-27 02:02
Core Insights - The launch of the "Kanhai" AI model and the multi-modal deep-sea habitat cognitive and exploration model aims to enhance understanding and prediction of deep-sea environments, addressing significant gaps in human knowledge about the deep sea [1][2] - The models leverage artificial intelligence and satellite remote sensing data to improve marine disaster warning accuracy and provide intelligent solutions for deep-sea protection [1] Group 1: Model Development and Features - The deep-sea cognitive model can intelligently simulate typical deep-sea habitats, such as seamounts and hydrothermal vents, and provide solutions for deep-sea conservation [1] - The "Kanhai" model integrates data from ocean satellites, offering a comprehensive view from the ocean surface to underwater environments, enhancing predictive capabilities for marine conditions [1] Group 2: Importance and Impact - The application of digital and AI technologies is expected to overcome traditional limitations in deep-sea observation, significantly improving efficiency in understanding deep-sea ecosystems and sustainable resource utilization [2] - The 2025 Xiamen International Marine Week serves as a platform for international collaboration to address challenges facing the oceans, such as climate change and biodiversity loss [2]
《中国噪声污染防治报告(2025)》发布
Ke Ji Ri Bao· 2025-11-27 01:51
Core Insights - The report indicates that noise pollution control efforts in China are ongoing, with overall sound environment quality remaining stable in 2024 [1][2] - Noise complaints from the public are a significant concern, with noise issues accounting for 59.2% of all environmental complaints [1] Group 1: Noise Pollution Statistics - The daytime compliance rate for urban sound environment functional areas is 95.8%, a decrease of 0.3 percentage points from the previous year; the nighttime compliance rate is 88.2%, an increase of 1.2 percentage points [1] - The total number of noise complaints in 2024 is approximately 5.895 million, an increase of 189,000 from the previous year, although the growth rate has slowed [1] - Social life noise complaints account for about 4.197 million cases, representing 71.2% of total complaints, which is an increase of 2.8 percentage points from the previous year [1] Group 2: Regulatory and Management Actions - Over 160,000 industrial enterprises will include industrial noise in their pollution discharge permits and registration management in 2024 [2] - More than 8,200 cases of construction noise violations were investigated, with penalties totaling approximately 126 million yuan, a year-on-year decrease of 23.7% [2] - The promotion of low-noise construction equipment and techniques is accelerating, with 63 models of low-noise construction machinery included in the 2024 guidance directory [2] Group 3: Technological Advancements and Community Initiatives - Public places are being managed more effectively to reduce noise impact, utilizing technologies such as directional sound systems and automatic monitoring devices [2] - By the end of August 2024, 2,223 quiet communities have been established nationwide [2] - The automatic monitoring system for noise has been fully implemented in 338 cities, achieving a 100% automation rate in sound environment quality monitoring [2]
支持创新药高质量发展,重庆有新举措
Ke Ji Ri Bao· 2025-11-27 01:25
Core Insights - The Chongqing Municipal Government has officially issued measures to support the high-quality development of innovative drugs, marking a significant push for the biopharmaceutical industry in the region [1][2] Group 1: Innovative Drug Development - Chongqing has achieved major breakthroughs in innovative drugs, with the launch of the first innovative drug and the first CAR-T cell therapy for children and adolescents [1] - There are currently 42 innovative drug projects in clinical trials in Chongqing, with expectations of 1-3 new drugs being approved annually over the next three years [1][2] Group 2: Support Measures - The newly issued measures include 25 specific initiatives across four main areas: accelerating research and development, optimizing application, clinical collaboration, and ecosystem empowerment [2][3] - A key focus is on creating a priority list for innovative drug research, providing comprehensive support throughout clinical trials, registration, production, and financing [2] Group 3: Clinical Application and Collaboration - Chongqing will establish an "innovative drug application list" to facilitate rapid market access for listed products, ensuring that medical institutions comply with the distribution of innovative drugs [2] - The measures encourage collaboration among pharmaceutical companies, research institutions, and universities to form comprehensive innovation platforms, enhancing clinical research capabilities [3]
解密载人航天首次应急发射任务
Ke Ji Ri Bao· 2025-11-27 01:25
Core Viewpoint - The successful launch of the Shenzhou-22 spacecraft marks China's first emergency launch mission in manned spaceflight, utilizing a 16-day emergency launch plan to ensure the safety and efficiency of the operation [1][2]. Group 1: Emergency Launch Implementation - The emergency launch was initiated after the Shenzhou-20 spacecraft window showed minor cracks, leading to a conclusion that it did not meet safety conditions for manned return. The command center quickly activated the emergency plan, completing risk assessments and necessary preparations within 20 days [2]. - The Long March 2F Yao-22 rocket and Shenzhou-22 spacecraft were put into a ready state, undergoing tests and checks, including propellant loading, to ensure a successful launch and docking with the space station [2]. Group 2: Differences Between Emergency and Regular Launches - The Shenzhou-22 spacecraft features several technical upgrades compared to the Shenzhou-21, enhancing reliability. It was launched in an unmanned state, carrying supplies, which differentiates it from manned launches [3]. - The 16-day emergency launch task is characterized by a compact process, high intensity, and rapid pace, presenting significant challenges to the spacecraft systems [3]. Group 3: Safety Measures for the Space Station - The Chinese space station has implemented various risk control measures since its design phase, including backup systems for the Tianhe core module and cargo spacecraft, ensuring normal operations and safe returns for astronauts [5][6]. - For space debris protection, the station employs active avoidance for debris larger than 10 cm, protective devices for debris smaller than 1 cm, and impact sensing for intermediate sizes, allowing for emergency pressure protocols in case of leaks [6].