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张朝阳对话诺贝尔奖得主David Gross:解密“时空涌现”“质量起源”
Guang Zhou Ri Bao· 2025-07-12 13:03
7月11日,搜狐创始人、董事局主席兼首席执行官、物理学博士张朝阳和2004年诺贝尔物理学奖获得 者、2025年基础科学终身成就奖得主、美国国家科学院院士、中国科学院外籍院士戴维·格罗斯(David Gross)展开了一场知识对谈,共同探讨物质世界最基础的构成和物理理论的前沿进展。 据悉,张朝阳与格罗斯教授从自然界四种基本力的差异切入,其间讨论了强相互作用的"渐近自由"特性 ——这一突破性发现正是格罗斯教授获得诺贝尔物理学奖的关键。随着对话向理论前沿延伸,二人又从 量子引力谈到弦理论,探究时空的本质,同时也直面了暗物质探测领域的当代难题。 从量子场论的"反叛者"到渐近自由的"奠基人" 作为诺奖级成果,渐近自由的发现历程是张朝阳本次对话最关心的话题之一。格罗斯教授回忆20世纪60 年代末的"泥沼":加速器每周都能发现新粒子,但没人理解它们的本质。直至1968年,斯坦福直线加速 器中心(SLAC)意外证实质子内部存在自由运动的点状粒子——"夸克",一举逆转局面。但这又引出 了更多的矛盾,如果夸克能够自由运动,它们为何从未单独现身? 在张朝阳的追问下,格罗斯教授承认,他在29岁为此开启了一场豪赌。在长达五年的工作中, ...
三亚出台非遗保护实施细则
Hai Nan Ri Bao· 2025-07-11 01:50
Core Viewpoint - The implementation details for the protection of intangible cultural heritage in Sanya have been established, focusing on a comprehensive protection system and the allocation of special funds to support various aspects of heritage preservation [1][2]. Group 1: Implementation Details - The "Implementation Details for the Protection of Intangible Cultural Heritage" will take effect on September 1 and remain valid until September 1, 2030, consisting of 7 chapters and 67 articles [1]. - A "five-in-one" protection system is constructed, covering special fund management, project evaluation, recognition of representative inheritors and groups, demonstration base management, and cultural ecological protection area establishment [1]. Group 2: Funding and Support - Special funds will be established to support nine key areas, including resource investigation and representative project protection, with inheritors receiving an annual subsidy of 6,000 yuan per person for activities such as teaching and research [1]. - Different types of projects will receive tailored protection, with an emphasis on regional protection for folk literature and customs, tourism integration for traditional music and dance, and encouragement for the development of modern cultural products in traditional crafts [1]. Group 3: Inheritor and Group Recognition - An innovative recognition system for "inheritor groups" has been established, providing equal protection for groups with two or more members collaborating and mastering core skills [2]. - Inheritors are required to fulfill obligations such as training successors, preserving physical materials, and submitting annual reports, with evaluations every two years [2].
拒绝“一问三不知”!企业环境风险防范须做到“三清”
Zhong Guo Huan Jing Bao· 2025-07-11 00:08
Core Insights - Companies have established emergency response systems for environmental risks, but many lack clarity on key risk factors, indicating a need for improved management practices [1][2] - The identification of risk substances, risk units, and risk levels is crucial for effective environmental risk management [2][3] Group 1: Environmental Risk Management - Many companies have not implemented a regular risk assessment mechanism due to cost considerations, leading to a lack of understanding of the physical and chemical properties of risk substances [1][2] - Emergency plans are often created by copying templates without verifying the actual risk conditions, resulting in a disconnect between plans and real risks [1][2] Group 2: Risk Identification and Classification - "Risk substance clarity" involves identifying the characteristics and scale of risk substances, requiring professional teams or third-party organizations to conduct thorough assessments [2][3] - "Risk unit clarity" necessitates precise identification of risk units throughout the production process, with tailored monitoring and prevention strategies for different types of units [2][3] Group 3: Risk Level Assessment - "Risk level clarity" requires scientific classification of risk units based on established standards, ensuring that risk levels are matched with appropriate prevention measures and resources [3] - Companies must revise emergency plans to incorporate detailed risk characteristics and response standards, creating a refined risk prevention and emergency response system [3]
我国上半年新批准建立国家标准物质524项
仪器信息网· 2025-07-10 08:19
导读: 1—6月,我国新批准建立国家标准物质524项,同比增长78.8%,涉及研制单位51家。截至目前,市场监管总局累计批准建立国家标准物质18982项,标 准物质国际计量互认能力稳居国际第一梯队。 特别提示 微信机制调整,点击顶部"仪器信息网" → 右上方"…" → 设为 ★ 星标,否则很可能无法看到我们的推送。 从研制单位类型看, 企业申报标准物质379项,占比72.3%,同比增长86.7%;科研事业单位申报145项,占比27.7%,同比增长61.1%。 企业和科研事业单位新建标准物质总数均有大幅度增长,标准物质研制单位以企业为主,标准物质行业经济活力回暖加速。 从地域分布看, 华北地区新建标准物质234项,占比44.7%;华东地区新建标准物质124项,占比23.7%;东北地区新建标准物质62项,占比 11.8%;西北地区新建标准物质48项,占比9.2%;华南地区新建标准物质32项,占比6.1%;西南地区新建标准物质24项,占比4.5%;华中 地区未新建标准物质。华北地区新建标准物质数量最多,西南地区新建标准物质增速较低。 标准物质是开展化学、生物等检测活动必不可少的"标尺"和"砝码"。截至目前,市场监管 ...
天津滨海机场物流公司开展七类放射性物质运输安全培训
Zhong Guo Min Hang Wang· 2025-07-10 05:50
《中国民航报》、中国民航网 记者李佳为 通讯员王鹏 报道:为落实天津市对放射性药品航空运输的相 关需求,切实提升第七类放射性物质航空运输的合规性与安全性,7月7日,天津滨海机场物流公司开展 了七类放射性物质运输安全专项培训,天津滨海机场公司相关操作岗位人员、外包方人员参加培训。此 次培训特邀天津滨海机场安全检查站、中国国际货运航空股份有限公司、天津云商智慧物流股份有限公 司相关岗位人员共同参与。 此次七类放射性物质运输安全专项培训,通过权威解读与实战教学,使相关从业人员掌握七类放射性物 质运输核心规定,推动培训成果切实转化为实际操作中的合规保障,筑牢航空货运安全防线。(编辑: 李季威 校对:张薇 审核:韩磊) 针对第七类放射性物质运输法规复杂、操作要求高的特点,本次培训精心设计两大核心模块,一是天津 恒瑞医药有限公司培训讲师围绕放射性药品全链条管理,结合《放射性药品管理办法》等法规,深入讲 解药品分类特性、运输安全规范与应急处置流程,助力学员建立全流程安全意识。二是天津津检专家聚 焦航空运输专业领域,全面解读ICAO TI-2025版国际规则,涵盖放射性物质包装等级、豁免运输条件、 剂量限值等核心标准;结合民 ...
美国市场人士认为:政策和产品性能决定可再生化学品未来
Zhong Guo Hua Gong Bao· 2025-07-09 02:18
近期,美国市场人士表示,可再生化学品在降低美国以及全球化学品生产碳足迹、促进可持续性和支持 循环经济转型方面潜力巨大。然而,高成本、气候变化和政策不确定性正威胁着这一进程,甚至让市场 参与者产生挫败感。经过对可再生化学品的再审视,市场人士认为,可再生化学品的未来在于外部政策 和产品性能。 在页岩气革命前,可再生化学品被视为美国利用本土丰富资源应对石油储量下降、增强能源安全并减少 对产油区地缘政治风险依赖的重要途径。近年来,可再生化学品又被视作振兴美国农村经济、发挥生物 技术基础设施优势及降低燃料化学品生产碳强度的工具。但据美国农业部数据,经过数十年研发投入, 可再生化学品产量仍不足美国化学品总产量的2%。许多技术领先企业因高昂资金成本、漫长市场培育 周期、规模化技术壁垒、现有产品竞争力以及政策波动而折戟。近期,尽管行业期待技术进步和气候变 化紧迫性能推动更多产品规模化,但可再生化学品领域已显露降温迹象,例如Danimer Scientific申请破 产、耐斯特集团放弃可再生化学品优先战略、项目实质性落地案例稀缺。其中,Danimer因生物塑料聚 羟基脂肪酸/聚乳酸销售疲软和扩产成本过高陷入流动性危机,其资产6 ...
泰柬爆发新争端,佩通坦作出一项决定
Huan Qiu Shi Bao· 2025-07-09 00:15
泰柬边界争端持续发酵,两国文化领域也发生冲突。据泰国《国家报》7日报道,泰国计划于2026 年提出申请,将其皇家传统服饰列入联合国教科文组织人类非物质文化遗产名录。柬埔寨此前申请将其 婚礼传统习俗列入人类非物质文化遗产名录引发泰方普遍担忧,据称柬方申报材料中含有泰国服饰的图 片和相关信息。 《国家报》称,柬埔寨婚礼传统习俗申报材料中使用泰国服饰图像,可能会被解读为暗示泰国服饰 是柬埔寨文化不可分割的一部分,或与柬埔寨文化有联系。 柬埔寨《高棉时报》8日刊登了一位常驻金边的地缘政治分析家的文章称,泰国《国家报》的文章 引起柬埔寨传统服饰传承者和实践者、文化学者、公民和官员的强烈反应,他们普遍认为该文章具有挑 衅性且缺乏见识。文章称,该报道曲解了非物质文化遗产的本质,加剧了邻国之间不必要的紧张关系。 柬方认为,文化遗产不应挑起纷争,而应成为增进理解的桥梁。柬方对其传统婚礼习俗"申遗",并非意 在贬低其他国家的传统,而是为弘扬和保护柬埔寨的独特文化。 另据泰国《曼谷邮报》和泰国公共电视台网站报道,被暂停总理职务的泰国新任文化部长佩通坦4 日以财政预算紧张为由,暂停了原计划于本月归还柬埔寨20件高棉文物的进程。她表示 ...
中国将如何建“广寒宫”?揭秘月球“盖房神器”
Huan Qiu Wang Zi Xun· 2025-07-08 12:19
Core Concept - The "International Lunar Research Station" plan proposed by China aims to establish a long-term scientific facility on the Moon, referred to as the "Moon Palace" project, with basic construction expected to be completed by 2035 and expanded by 2045 [1][2]. Group 1: Project Overview - The International Lunar Research Station is designed to be a long-term autonomous facility capable of short-term human participation, featuring capabilities for lunar-earth travel, energy supply, central control, communication navigation, lunar scientific exploration, and ground support [2]. - The project will utilize in-situ resources, including lunar soil for construction materials and ice resources for supporting scientific tasks [1][2]. Group 2: Technology and Innovation - A key technology for the project is the "Lunar Soil In-Situ 3D Printing System," which uses concentrated solar energy to melt lunar soil into bricks, allowing for construction without transporting materials from Earth [2][4]. - The system operates by using a parabolic reflector to concentrate sunlight, heating lunar soil to over 1300°C to create lunar bricks, which are characterized by high strength and good thermal insulation [2][4]. Group 3: Challenges and Solutions - The manufacturing of lunar bricks faces challenges such as uneven heating and the complex mineral composition of lunar soil, which can lead to defects like cracks [4]. - The project team has developed a solution involving a combination of reflective concentrators and fiber optic energy transmission to overcome energy capture and transmission challenges in the Moon's extreme environment [4][5]. Group 4: Resource Extraction - The extraction of water from lunar soil is another significant aspect of the project, with lunar polar regions containing substantial ice resources that can support life and provide fuel for deep space missions [5][6]. - A prototype device for extracting water from lunar soil has been developed, achieving international advanced levels in efficiency and addressing challenges related to high-strength ice-rich soil and low extraction efficiency [6][8]. Group 5: International Collaboration - The initiative has garnered support from 17 countries and over 60 international research institutions, indicating a collaborative approach to the construction and operation of the International Lunar Research Station [8].
卓越新能: 卓越新能关于以简易程序向特定对象发行股票摊薄即期回报的风险提示及填补回报措施和相关主体承诺(修订稿)的公告
Zheng Quan Zhi Xing· 2025-07-08 11:14
关于以简易程序向特定对象发行股票摊薄即期回报的风险 提示及填补回报措施和相关主体承诺(修订稿)的公告 本公司董事会及全体董事保证本公告内容不存在任何虚假记载、误导性陈述 或者重大遗漏,并对其内容的真实性、准确性和完整性依法承担法律责任。 龙岩卓越新能源股份有限公司(以下简称"公司")根据 2023 年度股东大会、 成后,由于募集资金投资项目拟达到的预期收益需逐步释放,预计短期内公司每 股收益(包括扣除非经常性损益后的每股收益)将受到股本摊薄的影响。 为进一步落实《国务院办公厅关于进一步加强资本市场中小投资者合法权益 保护工作的意见》《国务院关于进一步促进资本市场健康发展的若干意见》以及 中国证监会发布的《关于首发及再融资、重大资产重组摊薄即期回报有关事项的 指导意见》等相关文件要求,保障中小投资者知情权,维护中小投资者利益,公 司对本次向特定对象发行股票对即期回报摊薄的影响进行了认真分析,并提出了 具体的填补回报措施,相关主体对公司填补回报措施能够得到切实履行作出了承 诺。具体内容如下: 证券代码:688196 证券简称:卓越新能 公告编号:2025-029 龙岩卓越新能源股份有限公司 基于上述假设,公司测算 ...
庄稼人的劳动号子(说说我家乡的非遗)
Ren Min Ri Bao· 2025-07-07 22:28
《 人民日报 》( 2025年07月08日 16 版) (责编:卫嘉、白宇) 暮色漫过山脊时,锣鼓声总带着点醉意。鼓师把鼓槌抛向空中,李老汉敲锣的身子晃得像棵老槐树,他 们的唱词能突然拐到童谣上,众人笑得前仰后合,手里的锄头却没停。这声音混着炊烟和牛哞,在山谷 里绕啊绕。千年来,它就这样替庄稼人喊着号子,把日子从播种敲到收割,从青丝敲成白发。 李老汉的儿子在城里开挖掘机,机械臂起落的"哒哒"声,总让他想起田垄上的锣鼓点。带父亲去工地那 天,钢铁巨臂挥下的瞬间,李老汉突然哼起"开山锣"的调子,那声音被机器轰鸣揉得断断续续,却在他 浑浊的眼睛里,闪过一丝比铜锣还亮的光。是啊,锄头变成了机械臂,田垄变成了工业园,但有些节拍 早已刻进血脉,就像这川北薅草锣鼓,只要土地还在呼吸,只要庄稼人还在弯腰劳作,这千年未改的号 子,就永远是他们最贴身的心跳。 (作者为四川省广元市青川县教师进修学校原校长) 六月的川北梯田还浸在雾里,李老汉的铜锣便"哐当"一声劈开晨霭。领唱的王伯门牙缺了半颗,唱"玉 米嫩苗青又青"时,风会从齿缝里漏进去,把尾音抻成山雀的啼鸣。拔节时唱"你把盖子排端正",挂红 须时唱"苞米压弯甜苗秆",就连刨出条蚯 ...