"五一"前夕，当记者走进中国科学院西安光学精密机械研究所阿秒科学与技术研究中心，数百平方米布 满仪器的无尘实验室里十多名科研人员或在监测数据、或在调试设备。仪器上光点的闪烁，与屏幕上数 字的跳动，都像在为一项重要科研工作的阶段性成果倒计时。 "4月底是我们大科学装置建设中设计层面的一个关键节点，大家目前正快马加鞭，确保分管部分顺利产 出预期成果。"戴着防护镜的该中心副主任薛冰说。 这批青年的创新成果不断涌现，离不开团队建设和科研氛围营造。"我们经常开非正式'小会'，针对各 自研究领域的观点和问题展开讨论，这样开放包容的学术科研氛围，带来很多灵感和启发。"惠丹丹 说，既有坚定的目标导向、又充分鼓励自由探索，已成为团队的底色。 作为这一青年科研团队的"领队"，中国科学院西安光机所副所长、先进阿秒激光设施（西安部分）副总 指挥付玉喜是一名"80后"。在他看来，这个团队中的年轻人既有干劲也有冲劲，更有报国的理想信念， 把青春梦想扎根在了极微观处。 "科学研究不是坦途，但青年坚韧不拔的品质，助力这项国家使命不断向前迈进。"他说，"这让我想到 阿秒激光团队2023年第一次参加所里的篮球比赛首轮就被淘汰。后来，大家把每周三 ...

新华社伦敦5月1日电 特稿｜动摇科研根基 重创国际合作——特朗普政府科技政策引发科学界担忧 新华社记者郭爽 美国《纽约时报》报道说，美国新政府为了压制或避免"政治上偏向"的研究结果，已经删除了有关空气 质量、地震强度和海底地质等领域的大量公开数据集。文章说，在美国政府希望"尽可能少做"的当下， 最好人们什么都不知道，这样就不用去采取行动预防或者改善什么。 历史上，美国科技崛起得益于人才引进，但现在越来越多的科学家正考虑"逃离"美国。据英国《卫报》 近日报道，由于担心被拘留，一些澳大利亚学者已拒绝赴美参加学术会议。《纽约时报》上述报道指 出，美国有三分之一的诺贝尔奖得主出生于外国，但新一届政府移民政策的冲击却将一些科学家卷入其 中。 美国哈佛大学肯尼迪政府学院科学政策专家约翰·霍尔德伦表示，美国政府造成的损害可能会使美国科 学研究倒退数十年。"如此大的破坏性影响将极难逆转，需要很长时间才能恢复。" 动摇科研根基 英国《自然》杂志日前刊文说，特朗普上台仅3个月，就动摇了80多年来美国政府对科学的支持。政府 解雇了数千名政府机构的科学家，使大量研究陷入停滞，许多临床试验也被迫停止。美国政府还威胁要 削减美国研究型大 ...

据了解，此次下行的材料类实验样品后续将随返回舱运输回京，包括高强韧钢、月壤加固材料等4类22种。 太空生命科学实验 助力守护人类健康 为什么要在太空开展生命科学实验，这些生命科学实验样品将为我们揭开哪些"生命密码"呢？一起来了解。 央视网消息：4月30日13时08分，神舟十九号载人飞船返回舱在东风着陆场东区成功着陆，中国空间站第八批空间科学实验样品也随神舟 十九号乘组返回地球，生命类科学实验样品于30日晚顺利交付给科学家。 据记者介绍，这次随神舟十九号飞船下行的科学实验样品涉及空间生命科学、材料科学、新技术等多个领域的25个实验项目，总重量约 37.25公斤。在现场交付的实验样品主要是生命类科学实验样品，因为生物活性的特殊要求，这些样品是第一时间从着陆场转运到中国科学院 空间应用中心。现场交付的生命类科学实验样品包括骨细胞和成骨细胞、人支气管上皮细胞、蛋白样品及果蝇等20类，是空间站应用与发展阶 段下行生物样品种类最多的一次。此次下行的果蝇，跟斑马鱼、小白鼠一样是重要的模式生物，人类有约75%的致病基因都可以在果蝇身上找 到同源基因。神舟十九号乘组在轨期间，果蝇在空间站特殊装置内展开了"亚磁-微重力"实验。在 ...

Core Points - The eighth batch of scientific experiment samples from the Chinese space station successfully returned to Earth on April 30 with the Shenzhou 19 manned spacecraft [1] - The returned samples include 25 experimental projects related to space life sciences and space materials sciences, weighing approximately 37.25 kilograms [1] - Life science experiment samples have been delivered to scientists in Beijing, while materials science samples will be transported back to Beijing with the Shenzhou 19 spacecraft [1]

Core Viewpoint - The articles highlight the enduring spirit of self-reliance and hard work among Chinese youth throughout history, emphasizing their contributions to national development and agricultural innovation [1][5][9]. Group 1: Historical Context - The narrative reflects on the historical efforts of youth during the anti-Japanese war, where 40,000 patriotic young people traveled to Yan'an to seek a brighter future for the nation [5]. - The article discusses the challenges faced by youth in the Yan'an area, including shortages of food and materials, and their determination to overcome these obstacles through innovative agricultural practices [7][9]. Group 2: Agricultural Innovation - Research teams at the Chinese Academy of Sciences are studying alfalfa, a high-protein forage crop that can replace soybean meal, highlighting its potential to improve local livestock farming and reduce reliance on imported soybeans [3]. - The efforts of agricultural students and researchers in areas like Quzhou County have led to significant improvements in crop yields, achieving a breakthrough of one ton per mu for grain crops, setting a model for low-yield farmland across the country [15]. Group 3: Modern Applications - The establishment of the first technology small courtyard in Quzhou County in 2009 represents a shift towards integrating academic research with practical farming, where graduate students apply their knowledge directly in the fields [13]. - The collaboration between agricultural students and local farmers has fostered a community-oriented approach to agricultural development, ensuring that innovations are beneficial and accepted by the farming community [13].

Core Viewpoint - The series report "Striving in the Most Beautiful Youth" by CCTV highlights the spirit of self-reliance and hard work among Chinese youth throughout history, particularly focusing on the transformation of the Nanniwan area from barren land to a productive agricultural region, showcasing the importance of youth contributions to national development [1][3]. Group 1: Historical Context - The Nanniwan area was transformed from a barren land into a productive agricultural region through the efforts of youth during the Anti-Japanese War, emphasizing the spirit of self-reliance and hard work [1][5]. - A research team from the Chinese Academy of Sciences is studying alfalfa, a high-protein forage crop that can replace soybeans, highlighting the importance of utilizing saline-alkali land for agricultural production [3][5]. Group 2: Agricultural Innovation - The agricultural efforts in the Nanniwan area were led by a team that collected over 2,000 plant specimens to understand local vegetation and climate conditions, which was crucial for successful farming [5][9]. - The collaboration between agricultural researchers and local farmers in Quzhou County has led to significant improvements in crop yields, achieving a breakthrough of one ton of grain per mu [11][13]. Group 3: Educational Impact - The establishment of the "Technology Courtyard" in Quzhou County has allowed agricultural students to apply their research in real-world farming, contributing to local food security and agricultural innovation [9][11]. - The focus on practical agricultural education has resulted in students being well-integrated into the local community, enhancing the acceptance of new agricultural technologies [11][15].

Core Insights - The successful return of the eighth batch of space science experiment samples from the Chinese space station on April 30, 2023, marks a significant achievement in space research, involving 25 experimental projects across various fields including space life sciences, materials science, and new technologies, with a total weight of approximately 37.25 kilograms [1][3] Group 1: Space Life Sciences - The returned life science samples include 20 categories such as bone cells, induced pluripotent stem cells, bronchial epithelial cells, early embryos of humans and animals, protein samples, and fruit flies, representing the largest variety of biological samples and experimental projects to date from the Chinese space station [3][5] - Research will focus on mechanisms of bone loss in microgravity, characteristics of 3D growth of stem cells in space, effects of space radiation on cancer, and the impact of space environments on early embryonic development [5][7] Group 2: Space Materials Science - The materials science samples, which will be transported back to Beijing, consist of 22 types across 4 categories, including tungsten-based ultra-high temperature alloys, high-strength steel, nonlinear optical crystals, indium selenide semiconductor crystals, lunar soil reinforcement materials, and gel composite lubricants [5][7] - The research aims to analyze the effects of microgravity on material growth, segregation, solidification defects, and performance, providing technical support for the design of new high-performance alloys and large-size high-performance crystals [7]

Core Viewpoint - Shanghai is enhancing its foundational research capabilities and promoting the integration of basic research, applied research, and industrialization, encouraging enterprises to increase their investment in foundational research [1][4]. Group 1: Investment in Basic Research - In 2023, Shanghai's total investment in basic research reached 21.64 billion yuan, with the proportion of basic research in total R&D investment rising from 9.77% in 2021 to 10.6% in 2023, and is expected to reach around 11% in 2024 [2]. - Shanghai's foundational research investment is projected to account for approximately 11% of the total R&D expenditure in 2024, surpassing the national average of 6.91% [1][2]. Group 2: Research Output - In the first quarter of this year, Shanghai scientists published a total of 45 papers in top international journals such as "Science," "Nature," and "Cell," representing 29.2% of the national total of 154 papers, marking a historical high [1]. - Over the past decade, the number of papers published by Shanghai scientists in the three major journals has consistently increased, with 158 papers expected to be published in 2024, accounting for 29.6% of the national total [3]. Group 3: Support Mechanisms for Research - Shanghai is improving its funding mechanisms and management models for basic research, encouraging scientists to explore high-risk, high-value research topics [4]. - The establishment of the "Explorers Program" in collaboration with enterprises has expanded from 2 to 12 participating companies, including 7 private enterprises, and has funded 157 related research projects [5].

据悉，本次债券募集资金全部用于科技创新企业陕西长安先导产业创新中心有限公司股权出资。长安先 导产业创新中心是西安市委、市政府为贯彻落实中央关于科技创新重要指示精神而批准成立的新型研发 机构，首提实验室经济模式，以研发为产业，以服务为产品，开展有组织科研，加速科技成果转化应 用，推动西安市乃至全国的科技创新和产业升级。通过支持长安先导产业创新中心的发展，本期债券将 为培育新质生产力、推动经济高质量发展贡献力量。 实验室经济是以企业为主导、以实验室为载体，将共性关键技术产品化、产品商品化、商品产业化的一 种科技创新模式，有效促进科技与金融的深度融合，为经济发展注入新的活力。西安城发集团作为西安 市城市发展领域的国有资本投资运营公司，秉承"城市高质量发展综合服务商"角色定位，围绕西安区域 科技创新中心建设，实施"空间整理+领先科技+人才驱动"三位一体战略。依托西安市各区域禀赋，布 局航空航天、物质科学、人工智能、生命科学四大领域，汇集科研平台172个、在研攻关项目418个、院 士人才45人，内培外引技术经理人665名，有效促进产学研深度融合，构建科创雨林生态。 本报讯(记者周尚伃)近日，"西安城市发展(集团)有限公 ...

证券代码：600682 证券简称：南京新百 公告编号：临 2025-010 南京新街口百货商店股份有限公司 2025年第一季度经营数据公告 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、准确性和完整性承担法律责任。 南京新街口百货商店股份有限公司（以下简称公司）根据上海证券交易所《上市 公司自律监管指引第 3 号——行业信息披露》之《第四号——零售》的相关要求，现 将公司 2025 年第一季度主要经营数据（未经审计）公告如下： 一、2025 年第一季度主要经营数据如下： （一）主营业务分行业情况 | | | | 主营分行业 | 主营业务收入 | 主营业务成本 | 毛利率 | 营业收入比上年 | 营业成本比上年 | | --- | --- | --- | --- | --- | --- | | | | | （%） | 增减（%） | 增减（%） | | 商业 | 99,731,067.35 | 31,402,919.65 | 68.51 | -11.31 | -2.76 | | 宾馆餐饮业 | 7,801,100.36 | 1,058,679.29 | 8 ...