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新型液冷机柜破解数据中心散热能耗难题
Ke Ji Ri Bao· 2025-12-30 01:11
据了解,该机柜每用1度电支撑算力运算,仅需额外消耗0.1度电用于散热,相比传统风冷技术降耗超 70%。按一个数据中心500台机柜规模计算,每年能节省近1.4亿度电,可节约标准煤约4.5万吨,相当于 减少11万吨二氧化碳排放。 (文章来源:科技日报) 因此,寻求高效、节能、稳定的散热解决方案成为行业共识,液冷技术研发与应用势在必行。 华科高功率密度液冷机柜HZKJ-DS80单柜换热量突破80kW,意味着每秒能带走的热量相当于80台 1000W家用电暖器同时开到最大功率产生的热量总和。传统数据中心要散去这样规模的热量,需要部署 大量风冷设备。 记者12月25日获悉,湖北华中电力科技开发有限责任公司(以下简称"华中科技公司")成功研发了一款 4U机架式高功率液型CDU,搭载该组件的"华科高功率密度液冷机柜HZKJ-DS80"顺利通过中国泰尔实 验室检测。单柜换热量突破80千瓦(kW)、整体电源使用效率低至1.1,核心指标达到行业领先水平, 为我国绿色低碳数据中心建设提供强有力的国产化方案。 数据中心作为数字经济的核心枢纽,散热难题已成产业升级的关键瓶颈。传统风冷技术如同用电风扇, 为24小时不熄火的"锅炉"降温,散 ...
甲醇拖电混动液压挖掘机下线
Ke Ji Ri Bao· 2025-12-30 01:11
Core Viewpoint - Taiyuan Heavy Machinery Group has successfully launched a 135-ton methanol-electric hybrid hydraulic excavator, integrating clean power with strong excavation capabilities to enhance environmental protection, economic efficiency, and operational effectiveness [1] Group 1: Product Features - The excavator combines methanol power and drag electric technology, allowing for flexible switching between methanol drive and grid power supply [1] - It features a split power generation system that reduces vibration and enhances stability, significantly improving system reliability and lowering maintenance costs [1] - The excavator is equipped with two 300 kW methanol generator sets, ensuring ample power reserve and uninterrupted operation [1] Group 2: Economic Benefits - The annual electricity cost of the excavator is projected to be over 1 million yuan lower than that of traditional fuel engines [1] - The advanced electro-hydraulic control technology allows for precise matching and intelligent regulation of power, flow, and efficiency, greatly enhancing operational precision [1]
“电池胶水”修补界面裂痕 全固态钠电实现千圈稳定循环
Ke Ji Ri Bao· 2025-12-30 01:11
全固态钠离子电池(以下简称"全固态钠电")因高安全性和高能量密度被视为下一代储能技术的核心, 而钠基材料凭借钠资源丰富、成本低廉的优势,成为平衡性能与经济性的优选方向。但固态电解质与电 极间的界面问题,长期以来像一道无形的墙,阻挡着技术落地的脚步。 中国科学院大连化学物理研究所(以下简称"大连化物所")能源催化转化全国重点实验室团队近日在 《自然·通讯》上发表的一项重要成果,如同在这道墙上打开了一扇门。他们研发的电诱导加速聚合界 面修复技术,成功让Ah级全固态软包电池在无外部加压的条件下稳定循环超1000圈,使得全固态电池 向产业化迈出关键一步,为低成本储能技术的规模化应用扫清了核心障碍。 固态电池的界面困境 "就像两块干燥的玻璃,叠放再紧密也会存在缝隙,这就是固态电池的界面困境。"大连化物所动力电池 与系统研究部访问学者杨庭舟点出了全固态电池产业化的核心痛点。作为全固态电池的"心脏瓣膜",固 态电解质承担着传输钠离子的关键作用,而氧化物电解质因高离子电导率和化学稳定性,成为科研界的 重点攻关方向。但氧化物电解质的固有脆性使其从制备到使用的每一步都极易受损。 在大连化物所能源催化转化全国重点实验室里,该实验室 ...
蚊子口器“变身”3D打印喷嘴
Ke Ji Ri Bao· 2025-12-30 01:09
高分辨率3D打印对喷嘴精度要求极高。目前,市售的超细喷嘴多由特种金属或玻璃制成,制造工艺复 杂,成本高昂。研究团队指出,传统喷嘴在生产和使用过程中不仅产生大量环境废弃物,还可能因工艺 局限带来健康风险。为了寻找替代方案,研究团队将目光投向自然界中高度进化的微结构——蚊子口 器。 经过数百万年进化,蚊子口器形成了一种直径仅为人类发丝直径一半左右的天然微针结构,兼具特殊几 何形态和力学韧性。研究团队在显微镜下分离出蚊子吸血管,并利用特种树脂将其固定在标准塑料分配 器尖端。结果发现,这种生物喷嘴能承受极大的压力,打印出的复杂结构精细程度大约是目前商业打印 喷嘴的2倍。 据最新一期《科学进展》杂志报道,加拿大麦吉尔大学与美国德雷塞尔大学团队联合,开发出一种颇具 创意的高分辨率3D打印新技术。他们将雌性蚊子的口器(吸血管)转化成了高分辨率的3D打印喷嘴。 这种技术不仅能打印出精度达20微米的极细线条,还为解决昂贵、高能耗的微纳制造难题提供了可持续 的生物学方案。 团队已利用该技术成功打印出蜂窝状结构、枫叶图案,以及封装有红细胞和癌细胞的生物支架。研究团 队表示,蚊子口器使其能够制造出传统工具难以实现或成本极高的超精细结 ...
基于风险而非年龄筛查乳腺癌更有效
Ke Ji Ri Bao· 2025-12-30 01:09
数十年来,筛查通常假设所有女性风险相同,尽管大量证据表明个体差异显著,但指南仍主要依赖年龄 作为筛查依据。团队对参与"WISDOM研究"第一阶段的4.6万名美国女性展开分析,结果证实:以全面 风险评估为起点的筛查策略,能为每位女性制定更精准的筛查计划,优于现行仅按年龄划分的做法。 美国加州理工学院与加州大学旧金山分校的一项合作研究显示,采用基于个人风险的乳腺癌筛查策略, 可能比传统仅依据年龄的筛查方式更有效。这种个性化方法不仅有助于提高乳腺癌检出率,还能降低晚 期乳腺癌的发生风险。相关论文发表于最新一期《美国医学会杂志》。 团队介绍,个性化筛查首先综合评估个人的遗传、生理和生活方式等因素,进而制定针对性预防措施。 这一发现有望推动临床指南更新,改变乳腺癌筛查的现行实践。 团队强调,将筛查资源向高风险人群倾斜,是提升癌症防控效率的重要方向。 (文章来源:科技日报) 团队对比了标准年度乳腺X光检查与个性化风险评估两种模式。根据年龄、基因、生活方式、健康史及 乳腺密度等指标,将参与者分为4个风险等级,并给出了不同筛查策略。针对中高风险女性,研究还提 供个性化健康建议,包括在线乳腺健康决策工具、专家咨询,以及饮食运动 ...
磁性材料中发现量子自旋液存在证据
Ke Ji Ri Bao· 2025-12-30 01:09
为了验证这一猜想,团队此次合成了一种新型磁性笼目材料"锌巴洛石",并将其冷却至极低温度,随后 对材料中自旋的能量激发进行精细测量。结果显示,这种材料中的基本激发正是量子自旋液的重要标 志。这一发现有力证明了,这种奇异的量子激发是广泛存在于笼目材料家族中的普遍现象。 团队表示,在真实材料中获得与理论高度一致的实验结果,是确认量子自旋液存在的重要一步。 (文章来源:科技日报) 量子自旋液是一种极为奇异的量子物质形态。在传统磁性材料中,电子的自旋,即其内秉角动量,通常 会在温度降低时趋于稳定并形成有序排列。然而,在量子自旋液中,即便在接近绝对零度的极端低温 下,自旋依然不会"结冰",而是持续保持波动状态。这种状态伴随着高度的量子纠缠,使得一个粒子的 状态变化会瞬间影响到其他粒子。 笼目材料因其特殊几何结构,长期被视为孕育量子自旋液的理想平台。此前,研究团队曾在笼目材料羟 氯铜矿中观测到奇异激发,但这是否属于QSL的共性规律曾引发学术界争论。 据最新一期《自然·物理》杂志报道,美国SLAC国家加速器实验室和斯坦福大学研究团队在一种新型磁 性笼目材料中,发现了内秉量子自旋液(QSL)存在的有力证据,为理解量子自旋液的基 ...
AI网红渐成旅游业新宠
Ke Ji Ri Bao· 2025-12-30 01:04
旅行虚拟人应运而生 在印度东北部雾气缭绕的山丘前,拉迪卡一头浓密的波浪卷发自然垂落肩头。这位年轻的网红坐在咖啡 馆木桌旁,向近7500名粉丝展示她的午餐——一碗热气腾腾的面条。她热情称赞当地的辣酱、香料与竹 制工艺品。然而事实上,她品尝不到辣酱的滋味,闻不到香料的香气,也无法购买任何纪念品,因为拉 迪卡完全由人工智能(AI)生成。 美国《纽约时报》网站在近期的报道中指出,全球旅游机构和企业正越来越多地启用像拉迪卡这样的 AI网红,以降低成本、精准控制信息传递并加速内容生产。这一趋势不仅冲击真人旅行网红行业,也 为旅游业发展注入了新动力。 这些账号下的评论五花八门:爱心点赞、热情回应,亦不乏试图"揭穿"AI身份的留言。部分粉丝似乎未 察觉或不在意网红并非真人,有人在萨玛登机照下留言:"你的背影真美。" 旅行网红凭借精美的影像在社交媒体积累粉丝,已成为影响旅游业的关键力量。旅行预订公司Expedia 《2025年旅行者价值指数》显示,73%的消费者表示网红推荐会影响他们的目的地、酒店等旅行选择; 在40岁以下人群中,这一比例升至84%。 旅行类已成盈利最高的网红领域之一,顶级真人旅行网红单篇帖文收入可达10万美元 ...
对抗肥胖有了新途径 实验药调控细胞“能量工厂”可高效燃脂
Ke Ji Ri Bao· 2025-12-30 01:01
Core Insights - Scientists have discovered a new approach to combat obesity by enhancing the body's own heat production through a novel experimental drug that stimulates mitochondria to burn energy more efficiently as heat rather than storing it [1][2] Group 1: Research Findings - The research, led by a team from Sydney Technology University, focuses on a natural process known as "mitochondrial uncoupling," which reduces the efficiency of energy production in cells, allowing more energy to be released as heat [1] - The team has successfully designed a new generation of "mild" mitochondrial uncouplers that control the heat production process within safe limits, avoiding the toxic risks associated with traditional drugs while retaining the benefits of increased energy expenditure [2] Group 2: Implications and Future Directions - This mild intervention approach may help reduce cellular oxidative stress, potentially improving overall metabolic health and offering additional benefits such as delaying aging and related neurodegenerative diseases [2] - Although the research is still in its early stages, it provides a crucial blueprint for designing a new generation of drugs that can safely induce mild mitochondrial uncoupling [2]
科技日报:美对中国半导体产业调查纯属“贼喊捉贼”
Ke Ji Ri Bao· 2025-12-30 00:40
Core Viewpoint - The U.S. Trade Representative (USTR) has released findings from a Section 301 investigation into China's semiconductor industry, claiming that China's pursuit of dominance in this sector is unreasonable and burdensome to U.S. businesses. Starting June 2027, tariffs will be imposed on semiconductor products from China, with specific rates to be announced at least one month in advance [1]. Group 1: U.S. Policy and Actions - The USTR accuses China of using "non-market policies" such as industrial planning and subsidies to promote its semiconductor industry, labeling these actions as unreasonable. This accusation is seen as hypocritical, as the U.S. is considered the largest implementer of "non-market policies" in the semiconductor sector [1]. - The Biden administration has authorized $52.7 billion in direct subsidies for the semiconductor industry through the CHIPS and Science Act, providing a 25% investment tax credit for building chip factories and equipment, while also restricting companies receiving U.S. subsidies from significantly increasing advanced chip production in China for the next decade [1]. - The Trump administration previously threatened tariffs on imported semiconductor chips to compel international semiconductor companies to invest in U.S. manufacturing [1]. Group 2: China's Semiconductor Industry Focus - China's semiconductor industry is primarily focused on meeting domestic demand rather than exporting, with 80% of its mature process chips sold within the country. The emphasis is on technological research and development rather than increasing production capacity [2]. - The growth rate of domestic demand for mature process chips in China is aligned with the growth rate of production capacity, indicating limited potential for a significant influx of Chinese chips into Western markets [2]. Group 3: U.S. Export Controls and Tariffs - The U.S. has been accused of weaponizing and utilizing chips as tools, implementing export bans to hinder China's development in semiconductors and artificial intelligence. The goal is to reduce China's opportunities in the global market and weaken its industrial system [3]. - Tariffs are viewed as a direct method to curb China's semiconductor exports, with the U.S. aiming to prevent Chinese manufacturers from competing in the U.S. market and avoiding the provision of "excess capacity" to China [3]. - Despite U.S. efforts to restrict China's semiconductor industry through export controls and tariffs, it is believed that China's self-reliance and continuous technological advancements will ultimately lead to the failure of U.S. containment strategies [3].
海上风电产业加速迈向“深蓝”
Ke Ji Ri Bao· 2025-12-30 00:32
Core Insights - China's offshore wind power industry has achieved a historic leap from following to leading globally, with significant technological breakthroughs and a focus on deep-sea development [1][2] Group 1: Industry Development - The first 16 MW floating wind turbine, "Three Gorges Leading," has been assembled, marking a milestone in offshore wind hydrogen production [1] - As of September 2025, China's cumulative installed offshore wind capacity reached 44.61 million kW, maintaining the world's leading position in new installations for seven consecutive years from 2018 to 2024 [2] - The offshore wind power industry is entering a critical phase of scale and intensive development, requiring collaborative innovation, technological breakthroughs, and policy support [1][2] Group 2: Policy and Regulation - The Ministry of Industry and Information Technology has proposed new regulations for the wind power equipment industry, setting entry barriers based on R&D investment, production capacity, quality control, and green manufacturing [1] - The new regulations signal the acceleration of outdated capacity elimination and a shift towards a technology-intensive and low-carbon industry [1][5] Group 3: Market Dynamics - Coastal provinces like Jiangsu and Guangdong have become the main battlegrounds for offshore wind development, with installed capacities exceeding 10 million kW [3] - The offshore wind energy resources in China are vast, with a technical development potential of approximately 278 million kW, indicating significant room for growth [4] Group 4: Industry Challenges - The transition to a market-oriented model has introduced revenue volatility for offshore wind projects, necessitating enhanced risk management across the industry [6] - Key technological breakthroughs are required for large-scale, intelligent, and deep-sea development, focusing on flexible design, lightweight processes, and smart operation systems [6] Group 5: Collaborative Efforts - The Three Gorges Group has achieved 86 supply-demand cooperation agreements with a contract value of approximately 9.3 billion yuan, showcasing the effectiveness of industry collaboration [7] - The future of market competition will rely on collaborative efforts across the industry chain, emphasizing the importance of quality improvement and innovation [6][7]