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可视化新方法直观呈现“特勒尔效应”
Ke Ji Ri Bao· 2025-05-08 01:16
为攻克超高速观测面临的难题,研究团队另辟蹊径。他们利用飞秒激光脉冲照射立方体和球体模 型,同时配合超精密时间门控相机,巧妙地将光速"降档"至2米/秒——相当于普通人散步的速度。 利用这种"时空慢放"技术,研究团队捕捉到了球体和立方体的光学失真,将"特勒尔效应"直观呈 现:立方体在图像中逐渐呈旋转状态,前缘变得突出,后缘则如披风般向后舒展;而球体虽然由于对称 性外形不变,表面光斑却分布不均。 研究人员表示,这种可视化让深奥的物理理论"大白于天下",有助于科学家更深刻地理解难以捉摸 的相对论世界。这不仅是科学上的成功,也是艺术与科学之间碰撞出的火花。几年前,艺术家恩纳尔· 德·迪奥斯·罗德里格斯与该校科学家合作,探索了超快摄影的可能性以及由此产生的"慢光速"效应。 原标题:可视化新方法直观呈现"特勒尔效应" 科技日报讯 (记者刘霞)奥地利维也纳工业大学与维也纳大学联合研究团队近日利用一种创新的 可视化方法,首次将狭义相对论中的"特勒尔效应"直观地呈现在世人面前。1959年,两位科学家分别得 出结论:快速移动的物体看起来在旋转。这种奇特现象被称为"特勒尔效应"。历经60余年,研究人员终 于将这一效应可视化。相关成果 ...
传承“两弹一星”精神,见证“大国重器”辉煌,三家在京部属单位联合开展党建活动
Core Insights - The event highlighted the spirit of "Two Bombs, One Satellite" and showcased China's advancements in science and technology over the past 60 years [1][2] - The theme day activity included visits to significant sites, emphasizing the transition from historical achievements to modern scientific breakthroughs [2] Group 1: Historical Significance - The "Two Bombs, One Satellite" memorial showcased the dedication and sacrifices of early scientists during challenging times, reflecting their patriotism and self-reliance [1] - The event served as a reminder of the historical journey of Chinese scientists from basic research to significant technological advancements [2] Group 2: Modern Achievements - The Beijing Synchrotron Radiation Facility represented China's major breakthroughs in cutting-edge technology, illustrating the rapid development of the country's scientific capabilities [1] - Participants experienced the power of modern scientific instruments and the importance of ongoing research in exploring the microcosm of the universe [1] Group 3: Educational Approach - The theme day included a diverse range of learning experiences, moving beyond traditional exhibition formats to incorporate various educational settings [2] - The involvement of scientists from different generations provided a comprehensive perspective on the evolution of China's scientific endeavors [2]
引“金融活水”浇灌“科创绿洲”
Ren Min Ri Bao· 2025-05-07 21:46
2023年,西安交通大学教授刘明团队研发多年的电磁感应材料终于突破最后一道技术瓶颈。但遗憾的 是,资金成为横亘在实验室与市场之间的最大障碍。 "没有生产线,再好的技术也只能锁在实验室里。"刘明说,就在团队灰心时,西安市人才发展基金(以 下简称"人才基金")及时出手。2024年,该基金拿出600万元政策性资金,支持刘明团队核心技术产业 化,更是撬动了1.05亿元社会资本,使团队得以建成1.2万平方米的新产线,并开始向多家上市公司供 货。同年,刘明团队所在的企业快速发展,2024年企业实现千万级营收,同比增长47倍,预计2025年营 收突破亿元。 在西安,越来越多的科研创业者正受益于这支人才基金。"它不追求短期回报,而是甘当'耐心资本伯 乐',在科学家最需要的时候'雪中送炭',把硬科技的'种子'浇灌成参天大树。"刘明说。 2023年5月,西安市设立西北地区首支人才发展基金,由西安市委组织部(人才办)主导、市区财政联合 出资、西安财金投资管理有限公司("西安财金")负责运营管理,主要投资于西安市战略性新兴产业及各 级各类高层次人才创新创业项目,旨在突破人才创新创业初期面临的研发创新投入高、项目发展融资 难、企业引才 ...
甘肃:求取教育科技人才创新“最大值”
Zhong Guo Fa Zhan Wang· 2025-05-07 11:27
Core Viewpoint - Gansu Province has issued measures to accelerate the integrated development of education, technology, and talent, aiming to enhance innovation capabilities and establish a robust talent pool by 2030 [1][2]. Group 1: Education and Talent Development - The measures emphasize the importance of deep integration between education, technology, and talent to cultivate a large-scale, well-structured, and high-quality innovative talent team [2]. - Universities will be categorized into research-oriented, application-oriented, and skill-oriented types, promoting differentiated development in fields such as science, engineering, agriculture, and medicine [2][3]. Group 2: Technology Transfer and Innovation - The measures aim to break through technology transfer barriers by encouraging universities and research institutions to lead joint efforts in tackling fundamental technology challenges [3]. - A mechanism will be established to allow technology transfer revenues to support further research, promoting a "try before you pay" model for small and medium enterprises [3]. Group 3: Corporate Involvement - Companies are encouraged to establish talent funds and collaborate with universities for commissioned training, creating "school-in-factory" and "factory-in-school" models [4]. - By 2025, the number of corporate experts in the provincial technology evaluation expert database is expected to exceed 1,000, with over 75% of major provincial technology projects led or significantly participated in by enterprises [4][5]. Group 4: Policy Support and Financial Incentives - By 2025, Gansu Province plans to allocate 150 million yuan from state-owned capital revenues to support technological innovation, alongside tax incentives for high-tech enterprises [5]. - The measures will explore various incentive mechanisms for state-owned enterprises, including profit-sharing and market-oriented salary systems [5]. Group 5: Ecosystem for Innovation - The measures outline a comprehensive approach to create a favorable ecosystem for integrated development, focusing on resource coordination, project management, and financial support [6][7]. - New talent utilization models such as "technology vice presidents" and "industry professors" will be supported, with plans to recruit over 1,200 high-level talents by 2025 [7].
X射线三维成像“飞入寻常实验室”
Ke Ji Ri Bao· 2025-05-07 00:53
为让3DXRD技术惠及更多研究者,团队开发出实验室级的3DXRD系统。传统设备受限于固态金属阳极 的熔点,而新技术采用液态金属喷射阳极,既避免了熔化风险,又大幅提升了X射线输出强度。 为验证系统可靠性,团队让新型实验室级3DXRD、同步加速器3DXRD和实验室衍射断层扫描技术"同 台竞技",同时检测钛合金样品。结果显示,实验室级3DXRD准确识别了96%的晶体结构,尤其对60微 米以上的大晶体解析效果卓越。 团队表示,未来配备更高灵敏度探测器后,将能捕捉更细微的晶体特征。这项突破不仅让科学家能随时 开展预实验,更打破了同步加速器6天的时限枷锁,对于研究材料在反复应力作用下的长期演变(如数 千次循环载荷测试)具有革命性意义。(记者刘霞) 原标题:X射线三维成像"飞入寻常实验室" 美国密歇根大学研究团队在最新一期《自然·通讯》杂志发表论文称,他们成功研制出实验室级3DXRD 系统,首次在常规实验环境下实现X射线三维衍射技术(3DXRD),并成功解析了金属、陶瓷等材料 的微观结构。这项突破使原本依赖粒子加速器的尖端技术"飞入寻常实验室",为材料科学研究开辟了新 途径。 3DXRD技术是通过多角度X射线照射,构建出物 ...
强底气添动能 税收数据折射经济向新向好
Core Viewpoint - The report highlights the positive momentum in China's key engineering projects and overall economic performance in the first quarter of 2025, driven by increased investment and innovation in various sectors [1][2][3]. Investment and Project Development - In the first quarter, the number of engineering projects reported for work injury insurance reached 39,000, a year-on-year increase of 9.4%, with a total project cost of 1.9 trillion yuan, up 4.8% year-on-year [1]. - March saw a significant acceleration in project construction, with 18,000 projects reported, accounting for 46.5% of the quarterly total, and a total cost of 800 billion yuan, representing 43.9% of the quarterly total [3]. Innovation and High-Technology Growth - High-tech industry sales revenue grew by 13.4% year-on-year in the first quarter, with digital product manufacturing and digital technology application sectors seeing increases of 12% and 11.6%, respectively [1]. - The report emphasizes the role of tax incentives in supporting technological innovation and the development of new productive forces [2]. Consumer Market Dynamics - The health consumption sector experienced significant growth, with sales revenue from elderly care services increasing by 65.5% and nursing institution services by 23.9% year-on-year [3]. - The "May Day" holiday period saw a 15.2% year-on-year increase in sales revenue across consumer-related industries, driven by policies promoting the replacement of old consumer goods [3]. Manufacturing Sector Performance - Manufacturing sales revenue rose by 4.8% year-on-year, accounting for 29.1% of total national sales, with equipment manufacturing growing by 9.7% [4]. - High-tech manufacturing and equipment manufacturing sales increased by 12.1% and 9.7%, respectively, indicating a shift towards high-end and digital transformation in the manufacturing sector [4][5]. Tax Policy and Support Measures - The tax authorities are committed to implementing tax and fee support policies to enhance service levels and promote high-quality economic development [4][5]. - The report indicates that the tax department will continue to optimize tax payment services and respond to the needs of manufacturing enterprises, facilitating their transition to high-end, intelligent, and green development [5].
过于离谱!妇科论文惊现“子宫肌瘤男性患者”,院方:记过处分、降级处理
21世纪经济报道· 2025-05-06 09:05
以下文章来源于21新健康 ,作者韩利明 21新健康 . 21世纪传媒 · 公众号矩阵成员。 事件发酵后,山东大学齐鲁医院通过官方微博发布声明称,在关注到网友反馈的相关论文信息后,第一时间开展调查工作, "经核查,网传论 文存在学术不端问题。我院依规依纪给予护士霍某某记过处分、降级处理,取消其五年内各类晋级晋升等资格。" 齐鲁医院也明确表示高度重 视学风建设,对学术不端行为始终秉持"零容忍"态度。 作 者丨韩利明 编 辑丨 季媛媛 据央视网报道,近日,一篇题为《针对性护理干预在子宫肌瘤围手术期的情绪和生活质量临床应用效果》的论文在网上被广泛议论。 舆论直指 这篇聚焦子宫肌瘤的学术研究中,竟出现男性患者,"过于离谱"。 2 1世纪经济报道在中国知网查询发现,该论文于2 0 1 7年6月2 8日刊载于《实用妇科内分泌杂志》(电子版),作者署名为山东大学齐鲁医院妇 科的霍文静。通过国家卫生健康委护士执业注册信息查询系统进一步核实,霍文静持有山东省卫生健康委员会颁发的执业证书,证书编码为 2 0 0 8 3 7 1 2 9 6 6 4 。 在这场风波背后,舆论逐渐聚焦两大核心议题。其一,学术不端行为对医学科研公信力的侵 ...
欧盟砸5亿欧元“抢人” 马克龙:欧洲要做科学家的避风港
Yang Shi Xin Wen· 2025-05-06 04:07
冯德莱恩也在会议上宣布,欧盟将在未来3年内投入5亿欧元资金,使欧洲成为一个吸引研究人员的地方。 自特朗普政府上任以来,美国的科学政策发生了一系列变化,其中包括大幅削减美国国家科学基金会的资金、削减气候问题研究经费,以及取消数百项涉 及"多样性、公平性和包容性"的研究项目等。这一系列举动让在美的众多科研人士感到不安,其中不少人考虑离开美国。 4月18日,法国启动"选择法国科研"平台,该平台隶属"法国2030"国家投资计划,目标是鼓励法国大学及科研机构接收国际科研人员到法国定居,并继续开 展研究。 当地时间5月5日,一场名为"为了科学 选择欧洲"的大会在法国巴黎召开。法国与欧盟委员会在会上宣布,在美国特朗普政府减少对科研领域的资助之际, 欧盟将设立一项总值5亿欧元的科研激励计划,吸引外国的科研人员,特别是来自美国的科研人员前来工作。 此次大会是在巴黎索邦大学举行的,旨在鼓励全球的科研人员选择欧洲作为工作地点。法国总统马克龙、欧盟委员会主席冯德莱恩以及欧洲多所大学校长、 研究机构负责人等出席了活动。 马克龙在会上表示,美国特朗普政府近来采取了一系列裁撤科研项目和削减科研经费的行动;没有人会想到,一个经济模式如此依赖 ...
【中国新闻网】中国空间站第八批25项约37.25公斤科学实验样品返回地球
Zhong Guo Xin Wen Wang· 2025-05-06 03:10
Core Insights - The eighth batch of space science experiment samples from the Chinese space station successfully returned to Earth on April 30, 2023, weighing approximately 37.25 kilograms [5] - This batch includes 25 experimental projects across fields such as space life sciences, space materials science, and new space technologies [5] - The life science samples consist of 20 types, including bone cells, induced pluripotent stem cells, and early embryos, marking the largest variety of biological samples returned to date [5] Group 1: Life Science Samples - The life science samples were immediately transported to the Chinese Academy of Sciences Space Application Center for status checks and further research [5] - Scientists will conduct morphological detection, cell lineage analysis, structural analysis, and multi-omics analysis on the returned samples [5] Group 2: Material Science Samples - The material science samples, which will return with the Shenzhou 19 spacecraft, include 4 categories and 22 types, such as tungsten-based ultra-high temperature alloys and high-strength steel [6] - Research will focus on the effects of microgravity on material growth, composition segregation, solidification defects, and performance [6][7] Group 3: Future Applications - The research outcomes are expected to support the design of new high-performance alloys and the ground preparation of large-sized high-performance crystals [7] - This will aid in the manufacturing and application of key materials for next-generation aerospace turbine blades, nano-electronic devices, and flexible solar sails for deep space exploration [7]
【人民网】合肥科学岛上,这群青年接连刷新世界纪录
Ren Min Wang· 2025-05-06 00:40
强磁场促强科研 在中国科学院合肥物质科学研究院强磁场科学中心,团队中控系统"95后"科研人员刘雪澄正在 给"00后"研究生讲解中控系统操作规范。再过不久,这名研究生也将成为这里的熟面孔,在导师张俊研 究员指导下,逐步接触到稳态强磁场实验装置高场磁体研制相关任务。 把时钟拨回33个月前。 2022年8月12日,入职刚满一个月的刘雪澄,协助同事共同完成了一项实验。直到周围研究人员开 始拥抱欢呼,她才意识到,这是个大项目:由高场磁体技术青年创新先锋队(以下简称"青年创新先锋 队")研制的混合磁体产生了45.22万高斯的稳态磁场,刷新尘封23年的世界纪录。 近年来,青年创新先锋队在稳态强磁场领域不断取得自主研发的创新成果:2022年,混合磁体产生 了45.22万高斯的稳态磁场,目前仍是全球范围内可支持科学研究的最高稳态磁场;2024年,水冷磁体 成功产生42.02万高斯的稳态磁场,再次刷新世界纪录。 这支平均年龄不到35岁的"青年创新先锋队",正在以青年之力,为中国科技发展注入新能量,助推 强磁场技术发展迈上一个又一个巅峰。 日前,2025年度中国青年五四奖章个人(集体)入围名单公布,中国科学院合肥物质科学研究院高 ...