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不需要火箭就可直达,太空电梯离我们还有多远?
Ren Min Ri Bao· 2026-01-24 03:47
为了让碳纳米管早日从实验室走向太空,中国科学家一直在探索。清华大学化学工程系反应工程团队长 期从事碳纳米管材料的可控制备与应用研究,努力攻坚材料难题。 首先是突破长度极限。实际制备中,碳纳米管长度通常只有几十微米,且内部存在大量结构缺陷,实际 强度远低于理论值。2013年,研究团队通过提高催化剂活性概率,成功制备出单根长度超过半米的碳纳 米管,为超长碳纳米管的规模化制备奠定了基础。 早在1895年,就有科学家提出建造直达太空的"天梯"。这一设想提出已逾百年,似乎仍停留在想象阶 段,原因何在?问题的关键,在于找到足够强韧的缆绳材料。 太空电梯缆绳必须同时承受巨大的重力和离心力作用,对材料的抗拉强度要求极高。有没有既轻又强 的"超级材料"呢?1991年,科学家发现了碳纳米管,这给太空电梯研究带来了曙光。 碳纳米管是由碳原子按六边形蜂窝状结构排列而成的中空管状材料,直径只有几纳米到几十纳米。别看 身形纤细,它是人类发现的力学性能最优的材料之一:理论上,单壁碳纳米管的抗拉强度可超过100吉 帕,是最好钢材的数百倍;其杨氏模量(衡量材料刚性的指标)高达1太帕,极难被拉伸变形。更难得 的是,其密度仅为钢的1/4左右,单位 ...
大数据观察|冬日消费 创意满满
Ren Min Ri Bao· 2026-01-24 03:17
Core Insights - The integration of ice and snow consumption with winter demand is creating a significant consumption boom in China, with diverse new experiences emerging in various regions [1][2] Group 1: Ice and Snow Tourism - Jilin Province is enhancing its ice and snow tourism offerings, with over 800 events planned this winter and a focus on family, cultural, and recreational tourism products [4] - The province received 8.11 million domestic tourists during the New Year holiday, generating a total expenditure of 9.1 billion yuan, with a 45.1% year-on-year increase in revenue for monitored scenic spots [4] - Tourists are increasingly engaging in activities such as skiing and ice sculpture viewing, with Jilin's tourism strategy focusing on a comprehensive product system catering to various skill levels [3][4] Group 2: Multi-Experience Tourism - In Jiangsu's Nanjing, the combination of hot springs and wildlife experiences is attracting families, with the local tourism area reporting over 1.5 billion yuan in annual revenue and a peak daily visitor count of nearly 20,000 [6] - The region is set to host over 6,800 promotional consumption events by 2025, indicating a strong push towards enhancing consumer experiences [6] Group 3: Culinary Innovations - In Chengdu, the unique "flower field hot pot" experience is gaining popularity, allowing diners to enjoy hot pot amidst blooming canola flowers, with the flower variety cultivated to bloom earlier [7] - The city's restaurant industry is projected to reach 142.58 billion yuan in revenue by 2025, reflecting a 5.2% year-on-year growth, driven by innovative dining experiences that blend food with entertainment [8]
人民币对美元汇率中间价升破“7”汇率预计将继续双向浮动、保持弹性
Ren Min Ri Bao· 2026-01-24 02:09
Core Viewpoint - The People's Bank of China announced a rise in the RMB exchange rate against the USD, reaching 6.9929, the highest since May 2023, indicating a strengthening trend influenced by various internal and external factors [1] Group 1: Exchange Rate Movement - The central parity rate of the RMB against the USD was set at 6.9929, an increase of 90 basis points from the previous day's rate of 7.0019 [1] - Both offshore and onshore RMB appreciated against the USD, with projections indicating that by the end of 2025, both rates may break the "7" mark [1] Group 2: Economic Factors - The strengthening of the RMB is attributed to a combination of market supply and demand, policy guidance, and external environmental factors [1] - The Deputy Governor of the People's Bank of China highlighted the robust long-term economic fundamentals of China, including a large market size, complete industrial chain, and accelerating technological and industrial innovation [1] Group 3: Future Outlook - The RMB exchange rate is expected to continue to fluctuate in both directions, maintaining elasticity amid complex external conditions, including uncertainties in interest rate adjustments by major economies and ongoing geopolitical tensions [1]
2025年我国共授权发明专利97.2万件 人工智能专利有效量居全球前列
Ren Min Ri Bao· 2026-01-24 02:09
1月23日,国务院新闻办举行新闻发布会,介绍2025年知识产权工作进展。2025年,我国共授权发明专 利97.2万件,受理PCT国际专利申请7.8万件,注册商标420.6万件。截至2025年底,我国国内发明专利 有效量达532万件,每万人口高价值发明专利拥有量达到16件。 信息技术管理方法、计算机技术、医学技术等领域有效发明专利增速最快 创新质量持续提升,重点区域创新活跃。国家知识产权局副局长芮文彪介绍,在国内有效发明专利中, 信息技术管理方法、计算机技术、医学技术等领域的有效发明专利增速最快,人工智能专利有效量居全 球前列。截至2025年底,长三角地区、京津冀地区和广东省的发明专利有效量分别为173.4万件、91.6万 件和89.9万件,合计约占国内总量的2/3。 截至2025年底,我国国内高价值发明专利拥有量达到229.2万件,占国内有效发明专利比重达到43.1%, 较"十三五"末提高2.9个百分点。 "战略性新兴产业的国内有效发明专利达到153.4万件,28万家企业拥有176.4万件高价值发明专利,成为 创造高价值发明专利的'主力军'。"国家知识产权局战略规划司司长梁心新认为,我国专利结构正在向 优转变 ...
【人民日报】提升人居环境,农家有了新面貌
Ren Min Ri Bao· 2026-01-24 01:07
"十五五"规划建议提出,持续整治提升农村人居环境,以钉钉子精神解决好农村改厕、垃圾围村等 问题。整洁有序的村容村貌、舒适宜人的生活环境,不仅是村民们的殷切期盼,更是乡村全面振兴的应 有之义。近日,记者前往云南、黑龙江、江西等地,探访农村人居环境改善成果。 ——编 者 人居环境舒适度是衡量乡村发展质量的重要标尺。从厕所革命到垃圾整治,再到闲置空间改造,各 地农村瞄准村民关切,因地制宜改善人居环境,提升村民生活幸福感。 云南景谷县:把"方便"事办成村民的舒心事 云南省普洱市景谷傣族彝族自治县凤山镇平寨村的村民查世忠说,早些年上厕所真让人脑壳疼。院 子外有一个用木板搭成的公共旱厕,冬天,风从板缝钻进来;夏天,蚊子追着人叮,腿上咬的都是包。 "旱厕味道大、条件差,老人和小孩用着实在危险。"平寨村党总支书记王德强说。 改变始于2018年。景谷县启动农村"厕所革命",计划改造全县10个乡镇154个行政村(社区)的农 村户厕。消息传来,查世忠犹豫了:"改了不好用咋办?粪肥没了还咋种地?" "群众有顾虑,我们就得找对策。"景谷县农业农村和科学技术局技术员黄华介绍,景谷地形复杂, 一套固定的方案行不通。景谷县组建10支技术队伍 ...
张家界武陵源年接待入境游客首破100万
Ren Min Ri Bao· 2026-01-24 01:01
Core Insights - The Wulingyuan District of Zhangjiajie is projected to receive 1.0076 million inbound tourists in 2025, marking a 25.05% year-on-year increase, with visitors from 183 countries and regions, establishing a historical high for the area [1] - The region is becoming a significant window for global perceptions of "Beautiful China," benefiting from the expansion of its "visa-free" travel network and the allure of the "Avatar" film series filming locations [1] Group 1: Tourism Growth and Development - The inbound tourism market in Wulingyuan is experiencing sustained growth, with a notable increase in foreign tourists from countries such as South Korea, Russia, Italy, Canada, France, Germany, and Thailand [1] - The district is focusing on upgrading its products and services to transition from simple sightseeing to deeper cultural immersion, with new attractions and events being introduced throughout the year [1] Group 2: Night Economy and Visitor Experience - A high-quality night economy zone has been developed along the Suoxi River, featuring a variety of attractions including drone light shows, night markets, and local handicrafts, enhancing the nighttime experience for visitors [2] - The Zhangjiajie National Forest Park is improving its service quality through regular foreign language training for staff and implementing multilingual signage, along with advanced smart guiding systems for better visitor navigation [2] Group 3: Strategic Initiatives and Future Plans - The Wulingyuan District aims to enhance its tourism offerings by focusing on smart, international, and human-centered services, targeting Southeast Asian and European markets with customized high-end products [3] - The district is committed to transforming inbound tourism from broad coverage to in-depth cultivation, striving to establish itself as a world-class tourist destination [3]
【人民日报】努力实现“十五五”良好开局——习近平总书记在省部级专题研讨班开班式上重要讲话鼓舞干劲、汇聚力量
Ren Min Ri Bao· 2026-01-24 00:54
Group 1 - The core message emphasizes the importance of implementing the five-year plan as a political advantage, with a focus on enhancing the Party's leadership in economic and social development [1] - The "14th Five-Year Plan" strategic deployment requires a comprehensive and accurate understanding, with key industries such as IoT and integrated circuits being prioritized for development [2][3] - The need for innovation and technology development is highlighted, with a call for enhancing independent innovation capabilities and fostering new productive forces [2] Group 2 - Specific regions, such as Chengdu and Chongqing, are focusing on developing green industries and agricultural products, aiming for significant economic contributions by 2025 [3][4] - Urban renewal projects are being implemented to improve living conditions and enhance cultural tourism, aligning with the goal of coordinated economic and social development [5] - There is a strong emphasis on improving the capabilities of Party leaders and officials, with a focus on practical skills and a commitment to serving the public effectively [6][7]
【人民日报】把学习贯彻党的二十届四中全会精神不断引向深入——省部级专题研讨班学员深入学习领会习近平总书记重要讲话
Ren Min Ri Bao· 2026-01-24 00:54
Group 1 - The importance of studying and implementing the spirit of the 20th Central Committee's Fourth Plenary Session is emphasized, aiming to unify thoughts and efforts under the strong leadership of the Party Central Committee to achieve a good start for the "14th Five-Year Plan" [1] - Achievements during the "14th Five-Year Plan" period are attributed to the leadership of General Secretary Xi Jinping and the scientific guidance of Xi Jinping's Thought on Socialism with Chinese Characteristics for a New Era [2][3] - The "14th Five-Year Plan" has led to significant advancements in technology, including the establishment of the world's largest and most advanced information and communication network, showcasing the superiority of the socialist system with Chinese characteristics [2] Group 2 - The "15th Five-Year Plan" period is seen as a critical time for achieving socialist modernization, requiring a focus on practical actions and unity in thought and action based on Xi Jinping's important speech [3][4] - The need for a correct view of political achievements is highlighted, with an emphasis on serving and integrating into the domestic cycle, expanding domestic demand, and promoting consumption [4] - The energy sector is tasked with developing a new energy system and ensuring energy supply, with a commitment to high-quality development and green transformation [6]
2025年全国对外直接投资比上年增7.1%
Ren Min Ri Bao· 2026-01-24 00:47
Core Insights - By 2025, Chinese enterprises are expected to maintain healthy and orderly development in foreign investment, with over 50,000 companies established abroad across 190 countries and regions [1] - China's foreign direct investment (FDI) is projected to reach $174.38 billion in 2025, marking a 7.1% increase from the previous year, keeping China among the top three in the world for nine consecutive years [1] - Chinese companies are actively fulfilling social responsibilities, creating over 2 million jobs annually and contributing to the construction of education, health, and environmental facilities, earning widespread praise from host countries [1] Industry Developments - The year 2026 marks the beginning of the "14th Five-Year Plan," during which the Ministry of Commerce will implement effective foreign investment management and enhance overseas service systems [1] - There will be a focus on promoting integrated trade and investment development, supporting enterprises in international operations, and deepening cooperation in emerging fields such as digital economy and green development [1] - These efforts aim to contribute significantly to stable global economic growth [1]
2025年国开行发放贷款超1万亿元
Ren Min Ri Bao· 2026-01-24 00:47
本报北京1月23日电(记者王俊岭)记者23日从国家开发银行获悉,2025年,国开行向长江经济带沿江 省市发放贷款超1万亿元,重点支持减污降碳扩绿增长、基础设施互联互通、产业优化升级等领域,助 力经济社会发展全面绿色转型。获得金融支持的项目覆盖污水处理厂网一体化改扩建、防污治污设施建 设、地下综合管廊建设、港口基础设施建设、集疏运网络体系建设、传感器特色工艺中试平台等领域。 国家开发银行发展与规划部有关负责人说,国开行将坚持生态优先、绿色发展,围绕推进生态环境高水 平保护、创新支撑体系、区域协同融通、保护传承弘扬长江文化等领域,加大金融支持力度,提升金融 服务质效,助力长江经济带发展行稳致远。 ...