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现有商用磁铁可助力太空制氧,支持人类更高效开展宇宙探索
Ke Ji Ri Bao· 2025-09-02 01:12
Core Insights - A recent study published in *Nature Chemistry* demonstrates that using commercial magnets can enhance oxygen production in space by up to 240% in microgravity environments, potentially improving oxygen supply for astronauts during space exploration [2] Group 1: Research Findings - The study highlights the need for efficient and lightweight life support systems for space missions, as current systems, like those on the International Space Station, rely on complex mechanical components and consume significant power [2] - The process of electrolysis converts water into breathable oxygen, reducing the need to transport additional fuel and air to spacecraft [2] - In microgravity, the lack of buoyancy makes it difficult for gas bubbles to detach from electrode surfaces, which can limit the production of fuel and air for astronauts [2] Group 2: Proposed Solutions - Previous solutions to bubble detachment included shaking or vibrating devices, which consume extra energy and increase costs [2] - Researchers from Georgia Tech and the University of Bremen simulated a low-gravity environment and demonstrated a simple method to remove bubbles from the electrode surface by incorporating commercial neodymium magnets, enhancing the detachment of oxygen bubbles [2] - The study also includes the design of a proof-of-concept device that can separate bubbles during water decomposition in low gravity, achieving efficiency close to that in Earth environments [3]
全球首个绿电绿氢流化床氢冶金中试线实现工艺贯通
Ke Ji Ri Bao· 2025-09-01 11:33
冶金行业是碳排放大户,直接碳排放量高达全国碳排放总量的15%,是我国实现碳达峰碳中和的关键战 场。面对传统高炉长流程炼铁依赖焦化、烧结等高碳排放环节的行业现状,2022年,鞍钢集团联合中国 科学院大连化学物理研究所、中国科学院过程工程研究所和上海大学等单位启动了万吨级流化床氢冶金 中试线建设。 "项目所需绿电来自风电机组,采用先进碱水电解制氢技术生产绿氢,解决了传统电解水制氢能耗偏 高、高活性材料稳定性不足等问题,实现自动、安全、可靠的氢气连续化生产和供应。"鞍钢集团总工 程师刘丰强介绍,项目依托流化床氢气还原铁新技术,突破传统氢冶金原料适应性差、还原效率低和黏 结失流等难题,打通"制氢—还原—压块"全流程,形成了具有完全自主知识产权的流化床氢冶金新技术 成套工艺技术包。 据悉,相较传统高炉工艺,该项目每吨直接还原铁实现二氧化碳近零排放。产出的直接还原铁产品杂质 含量低,可满足新能源汽车电机用钢等高端产品需求。 "与传统冶炼技术相比,该项目对铁矿石品位要求低,具备更强的原料适应性,有利于提升我国矿产资 源利用率,缓解铁矿石进口压力。"中国科学院院士李灿说,相关技术前景广阔,随着未来大规模工业 化应用,其成本竞 ...
大连高新区:一体化金融服务为企业纾困
Ke Ji Ri Bao· 2025-09-01 07:35
科技日报记者 张蕴 通讯员 杨景怡 "我们想方设法向企业'输血',促进企业自身'造血',现已推动金融机构向包括深蓝肽、云动力科技 等在内的企业授信14.11亿元,这项工作仍在继续推进。"大连高新区创新创业创投服务中心相关负责人 说。 科技创新是企业增强核心竞争力的动力源泉,金融服务是助力科技创新的重要力量。自今年2月 起,大连高新区创新创业创投服务中心聚焦落地企业存在的融资难题,联合中信银行大连黄浦支行创新 金融服务模式,通过政策引导、资源整合和服务升级等方式,构建了"融资+服务+资源对接"一体化的 金融服务体系。 针对企业不同发展阶段的融资需求和自身状况,大连高新区创新创业创投服务中心发挥桥梁纽带作 用,深入了解企业经营状况、融资需求和发展规划,协同中信银行利用多样化金融产品和灵活的审批模 式,"一企一策"量身定制金融解决方案,实现金融"活水"精准滴灌,为企业带来更多生机活力。 "8月下旬,我们刚刚举办了一场线下宣讲活动,邀请中信银行、广发证券、辽宁英翰律师事务所等 专业机构进行科技企业融资及数智化管理主题分享,围绕专属融资产品、股权投融资策略等四大维度展 开深度解读,为企业拓宽融资渠道、获取全链条金融服务 ...
我国5G基站总数已近460万个 6G等技术研发处于全球第一阵营
Ke Ji Ri Bao· 2025-09-01 02:37
Group 1 - As of the end of July 2023, China has built 4.598 million 5G base stations and over 30.53 million gigabit network capability ports, achieving "gigabit access in every county and 5G access in every township" [1] - The Ministry of Industry and Information Technology (MIIT) emphasizes four upgrades in the new information infrastructure: comprehensive coverage and leading performance, integration of computing and networking, resource sharing and green energy, and urban-rural integration [1] - The MIIT is focusing on strengthening core technologies, enhancing the resilience and security of the industrial chain, and achieving breakthroughs in key technology areas [1] Group 2 - Emerging fields such as artificial intelligence and satellite internet are accelerating their development, with significant advancements in open-source models and vertical domain models [2] - Major Chinese telecom companies, including China Mobile, China Telecom, and China Unicom, rank 1st, 7th, and 8th respectively among global operators, while several device manufacturers like Huawei have become global leaders [2] - The information and communication industry is characterized by high R&D investment, advanced technology, and strong innovation, playing a crucial role in supporting new industrialization and the integration of the real economy with the digital economy [2] Group 3 - The MIIT will continue to promote network construction and upgrades, enhance the coverage of 5G and gigabit optical networks, and accelerate the deployment of 5G-A and 10G optical networks [3] - The MIIT aims to implement large-scale applications of 5G through various action plans, promoting collaboration between the information and communication industry and artificial intelligence [3] - The MIIT is also focused on technological innovation, accelerating the deployment of 5G-A products, and advancing the research and development of 6G technology [3]
广东海洋能源产业科技创新高质量发展研讨会在广东深圳举行
Ke Ji Ri Bao· 2025-09-01 00:59
Core Insights - The Guangdong Marine Energy Industry Technology Innovation High-Quality Development Seminar was held with a focus on leveraging marine advantages for economic growth [1] - Guangdong aims to achieve a marine production value exceeding 2 trillion yuan by 2024, with offshore wind power capacity reaching 12.51 million kilowatts, leading the nation [1] - Significant technological advancements in offshore wind power and deep-sea oil and gas development have been made in Guangdong, positioning the region at the forefront of global marine technology [1][2] Group 1: Offshore Wind Power Development - Guangdong has established a complete offshore wind power industry chain, including research, manufacturing, installation, operation, and testing [1] - Key projects include the world's largest anti-typhoon wind-fish integration platform "Fuxi No. 1" and the first semi-submersible wave energy breeding platform "Penghu No. 1" [2] - The region is also developing a green energy industry chain that integrates wind power, hydrogen production, methanol, and shipping [2] Group 2: Collaborative Efforts and Strategic Initiatives - China General Nuclear Power Group (CGN) has launched major offshore wind projects in Guangdong, supported by provincial government initiatives [1] - CGN is exploring three marine energy integration models: wind-fish integration, nuclear-wind-solar integration, and comprehensive energy islands [2] - A strategic cooperation project for green ship fuel supply and sales was signed between CGN and Shenzhen Port Group, marking a step towards innovation in the Guangdong-Hong Kong-Macao Greater Bay Area [3] Group 3: Policy and Future Directions - The National Energy Administration emphasizes the importance of developing marine energy for energy security and transition during the 14th Five-Year Plan period [3] - The seminar included discussions on innovative projects and the establishment of a collaborative platform for new energy systems in Guangdong [3]
科学家开发出新型mRNA疫苗平台
Ke Ji Ri Bao· 2025-09-01 00:54
Core Viewpoint - A new mRNA vaccine platform developed by researchers at Yale University aims to significantly enhance immune responses and expand the application potential of mRNA vaccines in various disease prevention and treatment [1][2]. Group 1: Vaccine Technology - The new technology, named "Molecular Vaccine Platform" (MVP), addresses the issue of antigen exposure by adding a "cellular GPS" module to mRNA-encoded proteins, guiding them efficiently to the cell surface [1][2]. - The "cellular GPS" module consists of natural membrane protein elements, including signal peptides and transmembrane anchors, which ensure stable expression of proteins on the cell membrane [2]. Group 2: Experimental Results - Laboratory tests on various pathogens, including monkeypox, human papillomavirus (HPV), and varicella-zoster virus, demonstrated stronger antigen expression, higher antibody levels, and more active T-cell responses [2]. Group 3: Future Applications - Researchers are working to expand this technology to broader disease areas, including cancer, AIDS, and autoimmune diseases, aiming to transition mRNA technology from infectious disease prevention to comprehensive medical applications [2][3]. - The MVP technology is expected to accelerate the development of new vaccines, reduce research and development costs and timelines, and elevate vaccine technology to new heights [3].
推动“人工智能+”行动落地见效
Ke Ji Ri Bao· 2025-09-01 00:54
国务院近日发布《关于深入实施"人工智能+"行动的意见》(以下简称《意见》),从重点行动领 域、基础要素支撑、组织实施等方面,针对实施"人工智能+"行动进行了全面部署,对于充分利用人工 智能创新成果、更好推动人工智能赋能高质量发展具有重要意义。 人工智能领域呈现三大新趋势 让AI从"新技术"变为"新基建" 推动人工智能与实体经济深度融合,使其从"新技术"变为"新基建",一方面需要持续加强关键核心 技术攻关,提升基础要素保障能力,构建良好的创新生态;另一方面需要从技术驱动转向场景驱动,面 向真实行业需求,从安全治理、金融支持等多方面为落实"人工智能+"行动做好有效支撑。 一是强化算力、数据、模型保障,实现"人工智能+"自主发展。我国高端算力芯片技术仍有较大提 升空间,算力资源地域分散、生态碎片化,需要从模型架构到训推框架再到算力集群,深度实现软硬协 同工程创新,发展异构混训技术,建设物理智能基础设施,打造全国算力一张网,提升算力资源统筹调 度能力,有效支撑国产高性能大模型研发。此外,推理大模型、强化学习训练、高价值应用等都带来高 质量数据需求的快速增长,需要进一步盘活现有资源并发展增量资源,完善数据版权制度、加强 ...
韦布望远镜揭示蝴蝶星云尘埃结构
Ke Ji Ri Bao· 2025-09-01 00:54
最新数据表明,这一环状尘带由晶体硅酸盐(如石英)以及不规则形态的尘粒构成。这些尘粒的大 小约为百万分之一米,以宇宙尘埃的标准来说,这已经相当大了,意味着它们经历了长时间的生长过 程。 实际上,这条环状致密尘带遮住了星云的中心恒星,即一颗类似太阳的恒星遗留下来的古老核心, 正是它为星云提供能量,使其发光。该恒星温度高达22万开尔文,是银河系中已知最炽热的行星状星云 中心恒星之一。 团队还发现,蝴蝶星云中既有在相对平静环境下形成的冷晶体,也有在剧烈环境下形成的无定形尘 埃,二者同时出现,为科学家理解行星基本材料如何聚集提供了关键证据。 科技日报讯 (记者张佳欣)英国卡迪夫大学团队利用詹姆斯·韦布空间望远镜(JWST)对蝴蝶星云 (NGC 6302)进行观测,揭示了其核心区域复杂的宇宙尘埃结构。相关论文8月26日发表于《皇家天文 学会月刊》,为研究地球及其他岩质行星的起源提供了重要参考。 蝴蝶星云位于天蝎座,距离地球约3400光年。它属于"双极星云",也就是说它有两个向相反方向展 开的"气体叶片",构成了蝴蝶的"翅膀";而中间一条环状的致密尘带,则形成了蝴蝶的"身体"。 这次观测还发现碳基分子多环芳香烃,可能与生命 ...
“跳跃基因”对人脑早期发育有积极作用
Ke Ji Ri Bao· 2025-09-01 00:54
该研究由瑞典隆德大学联合丹麦哥本哈根大学、美国纽约大学和英国剑桥大学共同完成。他们聚焦 于一类名为LINE-1(L1)的转座子,这类重复序列可在基因组中移动,曾被认为具有潜在破坏性且难 以研究。研究团队此次利用诱导多能干细胞和脑类器官,即在实验室中培育的微型人脑模型,结合 CRISPR基因编辑与高通量测序技术,选择性地让L1序列沉默,观察其对大脑发育的影响。 科技日报讯 (记者张梦然)长期以来,人类基因组中约98.5%的非编码DNA被视为"垃圾",因为它 们缺乏明确功能。然而越来越多的研究表明,这些区域在基因调控、发育过程和进化中扮演着关键角 色。发表于最新一期《细胞·基因组学》的研究中,一个国际团队结合类器官与"基因魔剪"技术,阐明 了重复DNA序列——特别是被称为"跳跃基因"的转座子,如何在人类大脑早期发育中发挥积极作用。 该研究为深入理解脑部疾病提供了全新视角。 研究发现,这些重复序列并非如过去认为的那样"无用",而是在人类干细胞中具有活跃功能。当L1 被关闭后,相关基因的表达出现紊乱,脑类器官的正常生长也受到显著干扰。这表明L1转座子在调控 神经发育过程中发挥着重要作用。从进化角度看,这类活动可能有助 ...
企业“算力落地难”怎么破
Ke Ji Ri Bao· 2025-09-01 00:54
Core Insights - The strategic value of computing power has transcended mere technology, becoming a key variable in reshaping industry structures, with China's AI-related ICT market investment expected to reach 1.6 trillion yuan by 2025 and 3.5 trillion yuan by 2028 [1] - The rapid evolution of large model technology is driving industries towards digital and intelligent transformation, presenting challenges such as "computing power selection difficulties" and "ambiguous transformation paths" for many enterprises [1][2] - The demand for autonomous innovative computing power is rapidly increasing in the Chinese market, projected to occupy nearly half of the market share by the end of this year [4] Industry Trends - As of June 2023, China's total computing power ranks second globally, with 10.85 million standard racks in use and an intelligent computing power scale of 788 EFLOPS [2] - The traditional IT architecture is struggling to meet the high demands of AI in terms of computing power, data, and real-time processing, leading to the emergence of "data islands" [2] - The shift in computing demand structure from training to inference is driving the rise of autonomous innovative computing power, which is expected to accelerate the industry's move towards intelligence [4] Technological Developments - The new AI transformation era is characterized by the need for computing facilities to possess high-performance multi-core processing capabilities and AI application acceleration technologies [3] - Huawei's computing industry in China is projected to grow by 80% in 2024, with the Kunpeng and Ascend platforms playing crucial roles in various sectors such as government, finance, energy, and transportation [5] Solutions and Frameworks - Huawei has developed an "Industry Intelligent Reference Architecture" to help enterprises find suitable upgrade paths for their digital and intelligent transformation, consisting of five layers: intelligent perception, intelligent connection, intelligent foundation, intelligent platform, and AI models [7][8] - The "Three Layers, Five Stages, Eight Steps" methodology provides a comprehensive roadmap for enterprises, detailing the levels, stages, and specific tasks involved in the transformation process [8] Collaborative Efforts - Huawei aims to leverage partnerships to extend the advantages of Kunpeng and Ascend technologies to a wide range of industries, emphasizing the importance of collaboration in achieving widespread intelligent solutions [9] - The company plans to continue investing in computing technology and strengthen its partner ecosystem to drive innovation and accelerate the digital transformation process across various sectors [9]