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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
三亚出台非遗保护实施细则 设立专项资金促进保护传承 海南日报讯(海南日报全媒体记者李艳玫)《三亚市非物质文化遗产保护规定实施细则》(以下简称 《细则》)于7月8日发布。该《细则》将于9月1日起施行,有效期至2030年9月1日。 《细则》共7章67条,从非物质文化遗产保护专项资金管理、市级非遗代表性项目评定与分级分类 保护、代表性传承人及传承团体(群体)认定与管理、非物质文化遗产生产性保护示范基地评定与管理到 文化生态保护区设立与管理,构筑起"五位一体"的保护体系。 《细则》明确,设立非遗保护专项资金支持非遗资源调查研究、代表性项目保护等九大领域工作, 其中,市级非遗代表性传承人及传承团体(群体)每年可获0.6万元/人的传承补助,用于授徒传艺、研究 交流等活动。此外,针对不同类型项目实施差异化保护。民间文学和民俗类注重区域性整体保护;传统 音乐、舞蹈、戏剧类强化与旅游融合;传统技艺类则鼓励开发兼具生活感与现代感的文创产品。对黎族 原始制陶技艺等涉及濒危原材料的项目,将专项支持原材料保护和替代品研发,并建立数字化保护档案 系统。 《细则》创新设立"传承团体(群体)"认定制度,对两名及以上分工协作、掌握核心技艺的传 ...
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 ...
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].
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 ...
勇敢的科学追梦人(弘扬科学家精神)
Ren Min Ri Bao· 2025-07-07 22:28
Core Insights - The article highlights the progress and vision of the Shenzhen Institute of Advanced Technology (SMART) under the leadership of Yan Ning, emphasizing her commitment to scientific research and the development of a robust biomedical platform in Shenzhen [2][3][10]. Group 1: Progress of SMART - Yan Ning expresses satisfaction with the progress of SMART, stating it has exceeded expectations since its establishment [3]. - The institute has successfully recruited several prominent Principal Investigators (PIs), enhancing its research capabilities [5]. - The Shenzhen Bay Laboratory, which operates in conjunction with SMART, has also seen significant growth, with over 60 young PIs joining [5][10]. Group 2: Research Focus - Yan Ning's research primarily revolves around transport proteins and ion channels related to human diseases, with a focus on understanding their three-dimensional structures [8][9]. - The concept of "life dark matter" is introduced, referring to the unknown substances in life sciences, such as carbohydrates and lipids, which are crucial for understanding life's essence and potential applications [9][10]. - The research aims to bridge the gap between basic science and practical applications, striving for impactful contributions to human health [10]. Group 3: Vision for the Future - Yan Ning envisions that, through collective efforts, Shenzhen will hold a significant position in the global biomedical landscape in the next 10 to 20 years [6]. - The institute aims to create an environment where researchers can focus on their work without administrative burdens, promoting a culture of "research without worries" [10][11]. - The ongoing construction of SMART's facilities is progressing rapidly, with plans for completion and operational readiness in the near future [11].
7/7财经夜宵:得知基金净值排名及选基策略,赶紧告知大家
Sou Hu Cai Jing· 2025-07-07 16:04
Group 1 - The article provides a ranking of open-end funds based on their net asset value growth as of July 7, 2025, highlighting the top 10 funds with significant increases [2][3] - The top-performing funds include 中航混改精选C, 中航混改精选A, and 渤海汇金新动能主题混合A, with net values of 0.7587, 0.7765, and 1.0978 respectively [2] - The bottom-performing funds include 中航优选领航混合发起C and 中航优选领航混合发起A, which saw declines in their net values to 1.6989 and 1.7045 respectively [4] Group 2 - The overall market performance indicates a slight increase in the Shanghai Composite Index, while the ChiNext Index experienced a downward trend [6] - The leading sectors include comprehensive services, multi-financial services, and advertising packaging, all showing growth of over 2% [6] - The article notes that the fund 中航混改精选C has shown rapid net value growth, outperforming the market [6] Group 3 - The top holdings of the funds are concentrated in the real estate sector, with a holding concentration of 86.55% for 中航混改精选C, indicating a strong focus on this industry [7] - The fund's top ten holdings include 万科A and 信达地产, which have shown positive price movements [7] - Conversely, the fund 中航优选领航混合发起C has a lower holding concentration of 82.19% in the pharmaceutical sector, with several holdings experiencing declines [7]