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北方最大的大兆瓦风电齿轮箱生产基地投产
Ke Ji Ri Bao· 2025-12-12 00:53
据介绍,中车戚墅堰所年产800台齿轮箱项目首批下线的7款产品,未来可以与目前主流的7-16兆瓦的 整机产品相匹配,可以在内蒙古以及"三北"地区实现完全消纳。该项目全面达产后,预计可实现新增产 值10亿元,提供超过300个就业岗位。 包头中车戚墅堰所风电传动有限公司总经理徐瀚说:"下一步,我们将以更大力度嵌入本地风电整机企 业的产业链,为客户提供全球一流的风电传动系统解决方案和全生命周期服务。" "团队攻克了'沙戈荒'地区高风沙、极端温差等痛点,实现低温密封、防腐、防尘、散热等核心技术的 突破,同时,能与明阳6-18兆瓦陆上风机形成适配,为新能源项目提供更高效、更可靠的核心支 撑。"中车戚墅堰所风电装备事业部副总经理张保松介绍,这是我国风电装备核心技术自主可控道路上 的一次重要突破,为应对全球最恶劣风场环境提供了"中国方案"。 科技日报讯 (记者夏天一 通讯员张划)记者12月10日从中车戚墅堰机车车辆工艺研究所股份有限公司 (以下简称"中车戚墅堰所")获悉,该公司年产800台齿轮箱项目在内蒙古自治区包头市风电装备制造 产业园正式投产。这填补了内蒙古在大兆瓦风电齿轮箱总装集成和试验验证领域的空白,使该产业园成 为 ...
我研究团队提出广谱抗甲流新策略
Ke Ji Ri Bao· 2025-12-12 00:50
记者11日从南开大学获悉,该校化学学院刘书琳研究员团队开发出一种全新的广谱抗甲型流感病毒策 略。该策略基于一种名为"多路复用蛋白降解靶向嵌合分子(PROTAC)"的技术,能精准锁定并同步瓦 解流感病毒复制的核心——病毒核糖核蛋白复合体,实现对多个关键病毒组分的"一网打尽"。该成果为 克服当前抗流感药物疗效单一、易产生耐药性等局限,提供了强效、持久且广谱的治疗新方案。相关成 果近期发表于国际期刊《美国化学会志》。 甲型流感病毒(IAV)因其快速变异率和规避宿主免疫反应的能力,是全球公共卫生的重大威胁。目前 的抗IAV药物只能攻击病毒的某一个靶点,导致病毒极易通过变异产生耐药性,显著限制了广谱疗效, 使药物效果大打折扣。 对此,研究团队巧妙地利用了病毒RNA中一段高度保守的"通用密码"——5'非翻译区(UTR)。这段序 列在不同流感病毒株中极为稳定,是病毒复制不可或缺的"开关"。刘书琳介绍:"团队据此理性设计了 一种多功能PROTAC分子,它像一个精准的'特洛伊木马',能够同时执行识别、结合并引导降解的任 务。" 该分子的一端是能精准结合病毒"通用密码"的寡核苷酸配体,另一端则负责招募细胞内固有的蛋白 质"粉碎机 ...
“银河画卷”公开首批毫米波分子谱线观测数据
Ke Ji Ri Bao· 2025-12-12 00:49
历时12年巡天观测,获取超过1亿条谱线数据,构建出目前最完备的毫米波一氧化碳分子谱线数据库, 今朝与全球共享。11日,中国科学院紫金山天文台"银河画卷"巡天计划(以下简称"银河画卷")正式向 全球公开释放其首批毫米波分子谱线观测数据。这些数据对于天体起源、恒星演化、银河系结构、星际 物质循环、高能天体物理过程等前沿研究具有重要意义。 "该计划不仅清晰勾勒出银河系分子气体的宏观分布结构,也揭示了星际分子云的内部细节与物理特 性,为研究银河系气体循环和恒星形成过程,提供了高精度、多谱线联合分析的银河系分子气体'三维 天图'和'普查报告'。"杨戟表示,这些数据对理解银河系物质分布与结构,以及气体生态循环等有不可 替代的基础支撑价值。 "银河画卷"是中国科学院紫金山天文台组织开展的一项大规模毫米波分子谱线巡天计划。该计划依托位 于青海德令哈的紫金山天文台青海观测站13.7米口径毫米波射电望远镜开展,覆盖北天银道面附近约 2300平方度的天区,通过探测星际一氧化碳分子气体发出的毫米波信号,高精度描绘银河系分子气体的 分布与结构。 近年来,"银河画卷"的观测数据持续向全球学者开放。2016年以来,"银河画卷"已经与国内外 ...
能源工程专用卫星制成
Ke Ji Ri Bao· 2025-12-12 00:48
Core Viewpoint - The successful launch of China's first energy engineering dedicated satellite, "Dianjian No. 1," marks a significant advancement in geological disaster monitoring and safety warning systems, transitioning from traditional ground-based methods to an integrated "sky-ground" collaborative model [1]. Group 1: Satellite Overview - "Dianjian No. 1" is a high-performance radar remote sensing satellite equipped with X-band synthetic aperture radar (SAR) payload, capable of all-weather and all-time observation [1]. - The satellite was jointly developed by China Power Construction Group's Chengdu Survey and Design Research Institute and China University of Geosciences (Wuhan) [1]. Group 2: Monitoring Capabilities - The satellite can detect millimeter-level subtle deformations of the Earth's surface and structures from a space orbit 500 kilometers away, effectively monitoring slow displacements and settlements of critical energy infrastructure such as mountain slopes, dams, and power plants [1]. - It provides high-precision and high-frequency space monitoring support for engineering safety [1]. Group 3: Strategic Importance - The launch of "Dianjian No. 1" is a crucial step in the strategic layout of China Power Construction Group's integrated perception system, which combines sky, ground, and water elements, and is essential for developing new productive forces in the engineering sector [1].
正听 | FCC泛化国家安全威胁中美用户正常通信
Ke Ji Ri Bao· 2025-12-11 23:57
Core Viewpoint - The FCC has mandated Chinese telecom operators to resolve certification issues within 14 days, threatening to cut them off from the U.S. telecom network if they fail to comply, which could severely disrupt communication between the U.S. and China [1] Group 1: FCC Actions and Implications - The FCC has increasingly used national security as a justification for actions against Chinese telecom companies, including denying operational applications and revoking licenses from 2019 to 2022 [2] - In 2023, the FCC has intensified its scrutiny of Chinese telecom firms, establishing a National Security Committee and launching investigations into multiple Chinese tech companies [2] - The potential removal of Chinese operators from the RMD could lead to a complete blockage of voice calls from China to the U.S., further escalating the decoupling of telecom networks between the two countries [1][2] Group 2: Broader Context and Consequences - The actions taken by the FCC are seen as part of a broader strategy to contain and restrict Chinese technology, which could lead to increased operational costs for U.S. telecom networks and inconvenience for American consumers [3] - The FCC's restrictions on Chinese products and services are likely to disrupt international supply chains and increase costs, ultimately affecting U.S. consumers [3] - The ongoing tensions and regulatory actions could hinder the necessary interconnectivity of global telecom networks, which is essential in the context of a rapidly evolving digital economy [3]
美国联邦通信委员会泛化国家安全威胁中美用户正常通信
Ke Ji Ri Bao· 2025-12-11 23:37
Group 1 - The FCC has ordered Chinese telecom operators to resolve certification issues within 14 days, threatening to remove them from the RMD if they fail to comply, which would block direct calls from China to the US [1] - The FCC's actions are seen as part of a broader strategy to decouple US and Chinese telecom networks, raising concerns about the impact on communication between the two countries [1][2] - The FCC has previously taken multiple actions against Chinese companies, citing national security risks, including denying operating applications and banning equipment from companies like Huawei and ZTE [2] Group 2 - The narrative suggests that the US is projecting its own security concerns onto Chinese telecom companies, while evidence indicates that the US has engaged in extensive global surveillance [3] - The FCC's restrictions on Chinese telecom products and services are expected to increase operational costs for US telecom networks and disrupt international supply chains, ultimately affecting American consumers [3] - The article advocates for a return to professional regulatory practices that promote international telecom cooperation rather than creating barriers [3]
碱基编辑疗法对抗T细胞白血病效果显著
Ke Ji Ri Bao· 2025-12-11 22:48
Core Insights - A new gene therapy named BE-CAR7 has been developed by a joint team from University College London and Great Ormond Street Hospital, showing significant effectiveness against T-cell acute lymphoblastic leukemia (T-ALL) [1][2] - The therapy utilizes base editing technology, a more advanced version of CRISPR, allowing precise single-letter modifications in DNA without cutting the DNA strands, thus reducing the risk of chromosomal damage [1][2] Group 1: Treatment Process and Results - BE-CAR7 cells are engineered from healthy donor T-cells, modified to recognize and target CD7 markers on leukemia T-cells [1] - After injection, these modified cells proliferate and aim to destroy all T-cells, including leukemia cells, with a successful clearance of leukemia lesions leading to potential bone marrow transplants for immune system reconstruction [2] - Among treated patients, 82% achieved deep remission, allowing for stem cell transplants, and 64% maintained a disease-free status, with some patients remaining disease-free for three years [2] Group 2: Patient Case and Broader Implications - The first beneficiary of this therapy is a 16-year-old girl from Leicester, who, after previous treatments failed, became the first global patient to receive base editing therapy and successfully cleared her cancer cells within a month [2] - This breakthrough offers hope for the approximately 20% of T-cell leukemia patients who do not respond to standard treatments, illuminating a promising path in the field of cancer therapy [3]
世界最大铝挤压机占地两个标准篮球场
Ke Ji Ri Bao· 2025-12-11 14:45
Core Points - Taiyuan Heavy Machinery Group has successfully delivered the world's largest aluminum extrusion press, which has received user recognition for its stable operation [1][3] - The aluminum extrusion press has a pressing force of 235 MN, dimensions of 57m in length, 27m in width, and 18.7m in height, occupying an area close to two standard basketball courts [1][3] - The press is expected to produce 20,000 tons of special large aluminum alloy profiles and 12,000 tons of large aluminum alloy products annually, supporting China's high-end industrial aluminum profile market [3] Group 1 - The aluminum extrusion press is described as the "new king" in the industry, showcasing its superior capabilities in actual operation [3] - The press features an inner diameter of 800mm, making it the strongest in the world, and has successfully produced profiles with a width of 1.1m, reducing welding seams and enhancing manufacturing efficiency [3][4] - Key innovations in the press's structure include a laminated tension column made of multiple steel plates and a fully pre-tensioned closed frame design, improving reliability and safety for long-term operation [3][4] Group 2 - The press is equipped with advanced temperature control, maintaining a precision of ±5 degrees Celsius, and a stable low-speed extrusion speed precision of ±0.02 mm per second [4] - The company aims to continue focusing on user needs and push technological boundaries to enhance user competitiveness [4]
中移金科构建移动出行新生态
Ke Ji Ri Bao· 2025-12-11 12:31
Group 1 - The core theme of the event was "Mobility Intelligence and Carbon Pathways," marking the launch of China Mobile's mobility product strategy and the introduction of a national public transportation carbon standard [1] - The event was organized by China Mobile Financial Technology Co., Ltd., with participation from various partners including China Petroleum and Beijing Zhongjiao Jinka, focusing on digital mobility, green low-carbon initiatives, and industry collaboration [1] - The mobility product utilizes an "AI + communication + mobility" technology path, leveraging China Mobile's comprehensive transportation cloud platform to provide a seamless travel experience across public, shared, and private vehicle scenarios [1] Group 2 - A personal carbon account scheme was introduced, centered around the concept of "mobile number as carbon account ID," which automatically records users' green travel behaviors and creates a carbon incentive loop [2] - The mobility initiative is becoming a key vehicle for China Mobile's digital service capabilities, emphasizing the importance of technological innovation and green development in enhancing public transportation efficiency and promoting sustainable living [2] - The initiative aims to integrate more scenarios into the carbon account system, providing a practical pathway for the transportation industry's low-carbon transition [2]
数智化勘查创新解锁“沉睡”十年矿山
Ke Ji Ri Bao· 2025-12-11 11:34
Core Viewpoint - The project team from China Aluminum International Engineering Corporation has achieved a significant technical breakthrough in a hydrological geological survey project for a large lead-zinc mine in Baoshan, Yunnan, which has been stalled for over a decade due to complex hydrological conditions [1][5]. Group 1: Project Overview - The mine has a resource reserve of 1.02 million tons of lead and zinc, indicating high development value [5]. - Previous assessments indicated high water inflow and strong water-conducting faults, leading to a complex hydrological situation that hindered development [5]. - The cost for water prevention and control engineering was estimated at 200 million yuan, which contributed to the long-term suspension of safety facility construction and mining design [5]. Group 2: Technical Innovations - The team developed an innovative "integrated air-ground, pumping verification, and three-dimensional simulation" exploration technology system, which downgraded the hydrological conditions from "complex" to "moderate" [1][10]. - High-precision hydrological geological mapping was conducted to clarify underground water circulation patterns, utilizing advanced geophysical techniques to accurately depict the distribution of underground water-bearing structures [5][7]. - A large-scale group well pumping test was implemented, with dynamic monitoring using high-precision sensors, improving data collection accuracy by over 50% compared to traditional methods [5][7]. Group 3: Results and Implications - The new exploration conclusions overturned previous judgments, indicating weak water-conducting faults and minimal hydraulic connection between surface and groundwater, significantly reducing hydrological risks [10]. - This breakthrough allows for the resumption of safety facilities and mining design, effectively resolving the decade-long "water prison" dilemma [10]. - The innovative approach not only clears obstacles for the mine's development but also provides a replicable model for data-driven decision-making in the mining sector, revitalizing dormant mineral resources [10].