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联合防控、哨点监测、“高温+虫媒”预警……法国这样应对基孔肯雅疫情
Ke Ji Ri Bao· 2025-07-31 00:04
Core Viewpoint - The World Health Organization (WHO) has raised alarms about a new outbreak of Chikungunya virus linked to the Indian Ocean region, which has spread to Europe and other continents, urging immediate action to prevent a repeat of the global epidemic from 20 years ago [1] Group 1: Current Situation and Historical Context - France has reported approximately 800 imported cases of Chikungunya since May 1, with 12 confirmed local transmission cases [1] - The most severe outbreak historically occurred in the French overseas department of Réunion from 2005 to 2006, infecting over 26.6 million people and resulting in 250 deaths [2] - France is considered a high-risk country for Chikungunya due to frequent exchanges with French-speaking African nations and the increasing frequency of imported cases every 3-5 years [2] Group 2: Response and Prevention Strategies - France has established a comprehensive response and prevention system for mosquito-borne diseases, integrating national and community-level strategies [3] - The "National Mosquito-Borne Disease Monitoring System" operates through five key stages: capture, identification, detection, early warning, and response [3] - The EID-Med program monitors the distribution and virus-carrying status of Aedes albopictus mosquitoes, providing real-time data to decision-makers [3] Group 3: Climate Change Impact - Climate change is enhancing the suitability of European climates for mosquito species, particularly Aedes albopictus, leading to an increased risk of virus transmission [5] - France's inland areas now possess the climatic conditions necessary for Chikungunya virus transmission, with local cases reported earlier than in previous years [6] - A comprehensive early warning system combining climate suitability models and northward transmission predictions is necessary to address the challenges posed by climate change [6] Group 4: Recommendations for Other Regions - The experience from France suggests that countries facing similar risks should enhance quarantine measures for incoming travelers and goods from endemic regions [6] - Continuous mosquito control activities and environmental health interventions are recommended to mitigate risks [6] - Establishing a monitoring system similar to France's could help in early detection and response to potential outbreaks [6]
《自然》发表评论称:中国核能建设打破“成本攀升魔咒”
Ke Ji Ri Bao· 2025-07-31 00:01
研究人员认为,中国的成就得益于稳定的监管环境、国内供应链发展以及标准化反应堆设计等战略性措 施的有机结合。核能成本降低的关键在于积极推进国内民用核电的发展,从20世纪90年代至2005年,通 过多项措施共同作用,提升了中国在核能领域的自主创新能力;2005年至2010年期间,显著提高了生产 能力;2011年后则加快采用先进安全措施的步伐,并进一步发展了自主研发的先进反应堆型号。 然而,成本控制这一核心挑战依旧存在。历史上,核能行业一直遭受"成本攀升"困扰。随着更多反应堆 的建设,每瓦电的成本不降反升,这影响了其经济可行性。核电站建设成本上升的因素可能包括缺乏标 准化设计、材料和劳动力成本增加、法规变化和技术复杂性等,但这种成本上涨是否不可避免呢? 文章称,中国的经验表明,通过努力可以有效降低建设成本。来自美国哈佛大学、纽约市立大学、纽约 州立大学石溪分校与约翰斯·霍普金斯大学的研究人员,整理并分析了来自多种公开渠道的中国核电站 建设成本数据集。 而中国集中化的核能监管体系、长期政策承诺以及快速的项目执行能力,使其能在不到西方国家一半的 时间内完成反应堆建设。这对寻求核能复兴的政策制定者具有重要启示。 最新发表 ...
中国散裂中子源二期工程首栋建筑单体完工
Ke Ji Ri Bao· 2025-07-30 23:56
国家"十四五"规划重大科技基础设施——中国散裂中子源二期工程迎来新进展。7月29日,中国散裂中 子源二期工程项目首栋建筑单体——放射性固体废物暂存厅顺利提前完工,为后续精密设备安装、系统 联调等关键环节筑牢根基。 中国散裂中子源位于广东省东莞市,是被誉为"超级显微镜"的大科学装置。2018年8月23日,中国散裂 中子源通过国家验收。2024年1月9日,中国散裂中子源二期工程正式启动,主要建设11台中子谱仪和实 验终端,并新增国内首台缪子实验终端和高能质子实验终端。二期工程建成后,中国散裂中子源中子散 射应用的覆盖范围和能力将达到国际先进水平,设备装置研究能力将大幅提升,实验精度和效率显著提 高,将为探索科学前沿及解决国家重大需求和产业发展中的关键科学问题提供科技利器。 目前,中国散裂中子源建安工程各项节点正按计划推进,后续将通过倒排工期、优化工序及资源投入, 全力保障"8月底背散射谱仪实验站完工、年底全面主体封顶"两大年度节点目标如期实现。 (文章来源:科技日报) 大科学装置的建安工程是保障装置性能的基石。中国散裂中子源二期建安工程是广东省和东莞市的重点 建设项目,将新建直线设备楼(二期)及直线低温厅、实验支 ...
高光谱成像给相机装上“火眼金睛”
Ke Ji Ri Bao· 2025-07-30 23:54
记者30日从西湖大学获悉,该校孵化的西湖智能视觉科技(杭州)有限公司最新研发出国内首款采用单 曝光压缩光谱成像技术的高光谱成像相机。这款相机通过底层光学硬件和算法突破,实现智能成像系统 的革新,形成了基于人工智能计算成像的新一代机器视觉感知系统。 "相较于过去的图像采集方法,高光谱成像技术的一大突破在于'看得更清',像是给相机装上了'火眼金 睛'。"公司创始人、西湖大学工学院感知与计算成像实验室负责人袁鑫说。 "高光谱成像相机能把光线分成100多种不同的光谱波段,覆盖400—1000纳米可见光至近红外波段。单 帧采集即可获得100个连续光谱通道信息,图像分辨率不低于1024×1024像素,细节十分清晰。"袁鑫 说,这款高光谱成像相机能够通过解析物质的光谱特征,揭开肉眼不可见的物质真相。 具体而言,这款高光谱成像相机能识别树叶上病虫害早期特征;可分辨水域中藻类繁殖征兆、重金属污 染痕迹以及化学物质溶解迹象;也能快速筛查田间作物病害情况,并定位农田中毒素富集区域,替代传 统耗时耗力的采样检测。目前该相机已应用于智慧农业、环保监测、电力巡检等领域,并持续向工业质 检、医疗科研等方向拓展。 (文章来源:科技日报) ...
有外卖自天上来——“5G-A+多模态”打开杭州600米低空消费新场景
Ke Ji Ri Bao· 2025-07-30 23:54
"为了保障600米空域内飞行器正常通信,示范区采用5G-A通感一体技术,通过最新128T通感设备,新 增对空波束,提升空域覆盖能力。"岑曙炜介绍,在软件方面,通过算法优化,推动低空网络感知高度 升级,实现低空专网与大网普通用户的分层组网,确保实现600米空域的5G-A通信全覆盖。 正午时分,艳阳高照。在杭州未来科技城海创园写字楼里,工作人员打开手机某外卖App,进入无人机 送货专区,点了两杯炒酸奶。下单显示发货地距离7公里,10分钟可送达,配送费6元。 订单另一端位于未来科技城某餐饮商圈。外卖小哥来到迅蚁无人机巢,将打包好的冷饮放进送货无人机 的货箱后,无人机升空往西南方向飞去。浙江移动杭州分公司5G技术专家岑曙炜打开电脑,向科技日 报记者展示这架送货无人机的飞行轨迹。 6分钟后,无人机缓缓降落在海创园的机巢内,自动卸下货物放入快递柜中。工作人员用密码取出外 卖,炒酸奶很完整,一点儿也没有融化。据实地测算,这段送货路程开车需要20多分钟。 杭州迅蚁网络科技有限公司工作人员介绍,去年以来,多家快递公司开始在未来科技城运营无人机送快 递业务。目前已开通4条航线,运送量日益增长,平均每天运送近40单。 2024年, ...
锻造商用车强劲“中国心”
Ke Ji Ri Bao· 2025-07-30 19:27
Core Insights - FAW Jiefang has launched four smart power domain products, marking significant breakthroughs in traditional fuel, new energy, and hydrogen power technologies [1][2] - The company aims to enhance its powertrain systems, which are crucial for commercial vehicle performance, through a self-research and development approach [1] - FAW Jiefang's smart power domain integrates engine, transmission, drive axle, and intelligent control software into a comprehensive solution [2] Development Stages - The development of FAW Jiefang's powertrain can be divided into three stages: 1. The first stage introduced the Aowei 6DL1 engine, marking the entry into the electronic control era 2. The second stage featured the Aowei 6DM2 engine, achieving fuel efficiency improvements 3. The current third stage focuses on creating a smart power domain to meet industry trends towards high intelligence, reliability, and low cost [1] New Energy Solutions - FAW Jiefang has established a comprehensive layout for new energy power domain products, including pure electric, hybrid, and hydrogen platforms - The EE270 product, part of the pure electric E platform, boasts a system efficiency of 92% and can operate effectively in extreme cold conditions [2] Production Capabilities - The company has developed full-chain autonomous production capabilities for electric drive and battery systems, along with innovative detection and quality assessment systems [2] Market Strategy - FAW Jiefang is focusing on high-end, green, and intelligent development, aiming for a revenue target in the billions and transitioning from traditional manufacturing to a "service + green ecosystem" model [2] Ecosystem and Partnerships - The company is restructuring its aftermarket ecosystem through a digital intelligent platform, enhancing supply, technical support, and channel sharing [3] - FAW Jiefang has established partnerships with major companies like CATL to provide comprehensive new energy solutions [2][3] Customer Network - The company has built a high-end customer network covering core logistics enterprises domestically and internationally, evidenced by partnerships with companies like TWT and Debang Logistics [3] Commitment to National Goals - FAW Jiefang is committed to establishing a strong national automotive brand, focusing on core technology, excellent products, and exceptional service to contribute to the growth of China's automotive industry [3]
从“月壤砖”到“月球房”,还需这三步
Ke Ji Ri Bao· 2025-07-30 09:22
Core Viewpoint - The successful development of China's first lunar regolith brick-making machine marks a significant step towards utilizing lunar materials for construction on the Moon, potentially enabling the creation of lunar habitats. Group 1: Development Stages of the Lunar Regolith Brick-Making Machine - The research and development of the lunar regolith brick-making machine took approximately two years, involving three key stages: concept validation, product development, and process iteration [2]. - In the concept validation stage, the research team conducted various tests on solar concentration technology, ultimately selecting Fresnel lens and film lens methods for energy concentration [2]. - During the product development phase, the team focused on high-efficiency energy transmission and lunar regolith densification, overcoming challenges related to energy transmission efficiency and regolith transport mechanisms [2][3]. Group 2: Characteristics of the Lunar Regolith Bricks - The lunar regolith brick-making machine operates by using a parabolic mirror to concentrate solar energy, achieving over 3000 times solar concentration, which melts the lunar regolith at temperatures exceeding 1300°C [4]. - The bricks produced are made entirely from lunar regolith without any additives, exhibiting high strength and density, suitable for various construction needs beyond just housing [4]. Group 3: Steps to Build Lunar Habitats - Despite the progress made with the lunar regolith brick-making machine, several technical challenges remain before constructing habitats on the Moon [5]. - The construction process requires integrating lunar regolith bricks with rigid and flexible structural systems to withstand the Moon's extreme conditions [5][6]. - The pathway to achieving this includes further technological breakthroughs in brick manufacturing, structural assessments, and conducting tests under lunar conditions [6].
YH-1000无人运输机完成复杂地形载货验证飞行
Ke Ji Ri Bao· 2025-07-30 09:22
Core Viewpoint - The successful flight of the YH-1000 unmanned transport aircraft marks a significant milestone in its journey towards practical operation, demonstrating its capability for commercial use in complex mountainous terrain [1] Group 1: Flight Details - The YH-1000 completed a full process verification of "cargo transport - cross-regional flight - autonomous return" over a distance of 134 kilometers between Liangping and Wulong, navigating five peaks over 1,000 meters in elevation [1] - The aircraft took off at 7:47 AM, landed at Wulong Xianren Mountain Airport at 9:06 AM, and returned to Liangping Airport at 11:02 AM after unloading and reloading cargo [1] Group 2: Project Development - The YH-1000 project was initiated in June 2024, with ground taxi tests completed in January 2025 and its first flight successfully conducted on May 22, 2025 [1] - The project team indicated that further steps will be taken to promote trial operations, contributing to the development of the low-altitude economy in the western region, subject to policy approvals [1]
调控油菜产量关键基因发现
Ke Ji Ri Bao· 2025-07-30 09:22
在模式植物拟南芥和油菜中进行的功能验证显示,当BnaC01.CCT8发生突变时,角果长度和种子重量显 著降低,而过量表达该基因则能显著促进角果和种子发育。"这就像给油菜安装了增产'开关'。"顿小玲 说。 目前,该团队基于BnaC01.CCT8优异等位基因,开发了相关分子标记辅助选择技术,并与杂交育种、基 因组选择等技术结合,培育出多个高产油菜新品系。这些品系在长江流域和黄淮地区的多点试验中表现 稳定,预计将为我国油菜产业提质增效提供有力支撑。(记者马爱平) "角果长度和种子重量是决定油菜产量的核心农艺性状,但长期以来,调控这两个性状的关键基因及其 作用机制尚不明确。"论文通讯作者、中国农业科学院油料作物研究所研究员顿小玲告诉科技日报记 者,研究人员通过化学诱变技术获得了角果变短、种子变轻的突变体,并利用图位克隆技术,历经5年 系统研究,成功锁定了调控油菜产量的关键基因BnaC01.CCT8。 油菜是我国第一大油料作物,其年产油量占国产油料作物总产油量的50%以上,油菜产量的提升直接关 系国家粮油安全。记者7月28日从中国农业科学院油料作物研究所获悉,该所油菜遗传育种创新团队首 次揭示了分子伴侣基因BnaC01 ...
耕地扩张 削弱地球“降温屏障”
Ke Ji Ri Bao· 2025-07-30 08:45
耕地扩张使SOA净降温作用减少11%。在未来气候变暖与空气污染减轻的情景下,相同耕地扩张的 增温效应将比当前增强约50%。 该研究首次系统揭示了,耕地扩张通过削弱"降温屏障"加剧全球变暖的新机制。傅平青说:"这项 研究警示我们,在制定粮食安全与气候政策时,必须同时考虑土地利用变化对'碳账本'和'气溶胶降温 账'的双重影响。" 研究建议,保护和恢复森林生态系统不仅能固碳,还能维持重要的SOA自然降温功能,这一"非 碳"效益在未来气候变暖背景下将愈发珍贵。该成果为国家制定碳中和战略和土地科学管理的协同政策 提供了重要科学依据,也为全球气候变化的预测和应对提供了新思路。 记者7月28日从天津大学获悉,该校教授朱佳雷、傅平青联合清华大学教授张强等,采用包含自主 研发模块的地球系统模型,首次在全球范围内系统分析了工业革命以来农田扩张对二次有机气溶胶 (SOA)及其气候效应的影响。该研究揭示了人类农业活动如何通过改变土地覆盖,影响大气成分和气 候变化。研究成果近日发表在国际地学顶级期刊《自然·地球科学》上。 据介绍,工业革命以来,为满足粮食需求,全球森林和草地大规模转为农田。传统研究主要关注这 种转变对碳储存、反照率和水 ...