Ke Ji Ri Bao

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蚂蚁成为女王,“天注定”还是“靠打拼”?
Ke Ji Ri Bao· 2025-07-24 05:53
接下来,科学家让不同基因型的幼虫在相同环境中成长。结果更戏剧化,他们发现编号为"M"的基因型 蚂蚁就算长得比同类矮小,也更容易获得蚁后特征;而另一些"A"型蚂蚁,则必须长到更大体型才能解 锁"女王权限"。 科学家发现,环境决定了蚂蚁长到多大,而基因决定体型如何转化。换句话说,蚂蚁可以通过环境努力 长大,但能不能成为女王,还得看出生"编码"。 这项研究破解了蚂蚁社会的关键机制,为理解复杂群体如何组织和演化提供了新视角。这种精密的分工 机制,也许正是自然界最了不起的演化成果之一。 但一只小小的蚂蚁幼虫,是如何"决定"自己成为工蚁还是蚁后的?是天生注定,还是后天培养?最近, 美国洛克菲勒大学的科学家揭开了这一谜团——体型和基因共同书写了蚂蚁的命运剧本。 你或许注意过,蚁后与工蚁简直判若两"蚁"。蚁后体型硕大,拥有翅膀、发达的复眼和巨大的卵巢;而 工蚁小巧无翅,多数甚至放弃生育权利。奇妙的是,这两种截然不同的个体,往往来自完全相同的基 因。这种"同基因不同命"的现象,被称为"发育可塑性"。 但蚂蚁是否像果蝇那样,某些性状可以脱离体型独立变化?学界长期争论不休。为破解这个谜题,科学 家选用了一个特别的研究对象:毕氏卵角 ...
东北亚绿色甲醇供应链全线贯通
Ke Ji Ri Bao· 2025-07-24 01:58
Group 1 - The successful refueling of 500 tons of domestic bonded green methanol fuel for the "COSCO Shipping Yangpu" vessel marks the first bonded green methanol refueling operation for international navigation in Northeast China, indicating the full connectivity of the Northeast Asia green methanol supply chain [1] - The "COSCO Shipping Yangpu" is the first domestically built methanol dual-fuel container ship, which will be operated by COSCO Shipping Container Lines Co., Ltd. on routes to the Americas [1] - The 500 tons of green methanol refueled at Dalian Port is sourced entirely from green methanol projects in Heilongjiang and Inner Mongolia, with the entire process receiving international sustainability and carbon certification, thus opening a "green" channel for international shipping fuel supply in Northeast China [1] Group 2 - To ensure the smooth implementation of the first bonded green methanol refueling operation, a pilot program was initiated to combine bonded warehouse and export supervision warehouse functions, allowing methanol to be transferred between accounts without actual transfer operations, significantly reducing operational costs for shipping companies and improving supply efficiency [2] - Northeast China currently has 75 green methanol and green ammonia production projects under construction or planning, accounting for over 80% of the national capacity. By 2030, the production capacity of green methanol and green ammonia in Northeast China is expected to exceed 31 million tons and 5.5 million tons, respectively, positioning the region as a major low-cost green shipping fuel production base globally [2]
银川电网新能源装机占比突破50%
Ke Ji Ri Bao· 2025-07-24 01:58
Group 1 - The successful launch of the Baoxin photovoltaic power station has increased the total installed capacity of the Yinchuan power grid to 3.9284 million kilowatts, with renewable energy capacity exceeding 2 million kilowatts, reaching 2.1236 million kilowatts, and the installed proportion surpassing 50% [1] - Since the second quarter of this year, there has been a peak in the grid connection of renewable energy, prompting the State Grid Yinchuan Power Supply Company to establish a special working group for grid connection services to track project progress and provide targeted support [1] - The working group has enhanced communication with renewable energy enterprises, holding regular meetings to address challenges and provide timely solutions, ensuring that all project phases are completed on schedule [1] Group 2 - The operation and maintenance model for renewable energy generation companies is increasingly automated and intelligent, with a focus on seven key tasks related to network safety and control capabilities [2] - The Yinchuan Power Supply Company has conducted comprehensive inspections of equipment and management to ensure the safe and stable operation of renewable energy, optimizing the energy structure of the Yinchuan power grid [2] - This year, Yinchuan has connected 11 renewable energy stations to the grid, with a total capacity of 338,800 kilowatts, contributing significantly to economic development and green transformation [2]
氢动三秦 破壁新局 陕西全链攻坚锻造千亿氢能产业
Ke Ji Ri Bao· 2025-07-24 01:36
Core Insights - The hydrogen energy industry in Shaanxi is rapidly developing, with over 100 hydrogen enterprises established in the province, and the total industry chain output value expected to exceed 4 billion yuan this year [1][4] - The 2025 Hydrogen Energy Specialized Competition is being held in Shaanxi, showcasing the collaboration of government, industry, academia, and finance to accelerate hydrogen technology transformation and industrial upgrading [1][5] Industry Development - The hydrogen fuel cell stack production line in Shaanxi has achieved autonomy in materials, research, and production, with a capacity of 2,000 units per year and a potential output value of approximately 300 million yuan [2][3] - The cost of traditional high-pressure hydrogen storage is 23.3 yuan per kilogram, while new technology can reduce this to below 11 yuan, facilitating safer transportation of hydrogen [3] Policy and Infrastructure - Shaanxi's "14th Five-Year" hydrogen industry development plan aims to establish a complete supply chain and industry system by 2025, with a target industry scale exceeding 100 billion yuan [4][7] - The establishment of hydrogen energy standardization committees in Shaanxi and Xi'an is intended to coordinate technological resources and promote the application of hydrogen energy [3][7] Collaborative Initiatives - The international hydrogen energy joint laboratory involving Shaanxi Hydrogen Energy, Xi'an Jiaotong University, and Serbia aims to research new hydrogen storage materials and AI-assisted hydrogen energy systems [5] - The development of a complete hydrogen energy industry chain in Yulin, Shaanxi, is underway, focusing on hydrogen production, storage, refueling, and application [5][6] Future Projections - By 2025, Shaanxi is expected to have a hydrogen production capacity of 50,000 tons per year and over 200 hydrogen enterprises, with the core components of the hydrogen energy industry projected to generate an output value of 1 billion yuan [7]
科技日报:湖北首个变电站内储能项目在武汉投运
Ke Ji Ri Bao· 2025-07-24 01:29
Group 1 - The core viewpoint of the news is that a new energy storage project in Wuhan is operational, which helps alleviate the pressure on the power grid during peak electricity usage periods due to high temperatures [1][3] - The energy storage project, located at the 110 kV Baoan Substation, has a total capacity of 10,000 kVA and can output up to 20,000 kWh to the main grid during peak times, effectively reducing the load on the substation's main transformer by 10% [3] - The project has successfully completed four safe charge and discharge cycles, delivering a total of 80,000 kWh of electricity, thereby ensuring reliable power supply during peak load periods [3] Group 2 - The construction of the energy storage project faced various challenges, including tight construction schedules, adverse weather conditions, and strict nighttime work regulations, but the company employed strategies like pre-installed foundations and cross-operation to ensure timely completion [3] - The new energy storage system is described as a "virtual generator," which actively participates in grid regulation by simulating synchronous generator characteristics, thus providing voltage, frequency, and inertia support to maintain system stability more effectively [4]
科技加持,暑期旅途惬意升级
Ke Ji Ri Bao· 2025-07-24 01:18
原标题:科技加持,暑期旅途惬意升级 截至7月22日,为期62天的2025年全国铁路暑运已过1/3。今年暑运期间全国铁路预计发送旅客9.53 亿人次,日均发送1537万人次。面对持续高位运行的客流,全国铁路部门在加大运力的同时,升级并运 用多种科技手段,提升在途服务水平,让人们夏日出行既清凉又舒适。 "智慧大脑"保畅通 7月的西安站,暑气裹挟着南来北往的客流涌动。与往年不同的是,今年进站口前再也看不到车站 工作人员手持扩音器调度的场景,曾经让旅客望而生畏的拥堵长龙,如今被井然有序的队伍取代。AI 技术的应用,正让这座近百年老站的面貌焕然一新。 在西安站生产调度指挥中心,一面巨大的综合监控屏格外醒目。屏幕中的高清数字地图上,车站重 要区域以红、黄、绿三色动态标注客流量。"我们站采用的这套AI智能测算系统就像车站的'超级大 脑',能够24小时不间断分析人流汇聚速度、移动方向和峰值时段。"西安站指挥中心主任董海峰指着屏 幕介绍道。 当这一系统监测到东8进站口实时客流突破150人阈值,终端立即弹出红色预警,该区域在地图上瞬 间"闪红"。预警信息被同步推送到相关工作人员的智能手环上。在进站口巡查的值班员看了眼智能手 环, ...
瓜香四溢里的科技温度
Ke Ji Ri Bao· 2025-07-24 01:02
Group 1 - The event on July 23 in Ningxia highlighted the enthusiasm of local farmers for agricultural technology, particularly the new watermelon variety "Ningnongke No. 10," which has a sugar content of 14, outperforming other varieties with a sugar content of 12, allowing it to sell for 0.2 yuan more per pound [1] - The event is part of the 2025 National Cultural, Technological, and Health "Three Going to the Countryside" initiative, aimed at promoting quality cultural and technological resources to better serve the production and life of farmers [2] - The local government has established partnerships with agricultural colleges and research institutes to implement agricultural technology projects, including 35 projects for the 2025 County Technology Achievement Transformation Application Demonstration Project [2] Group 2 - The initiative has facilitated cooperation between 28 technology-based enterprises and research institutes, leading to the implementation of 26 joint research projects, effectively addressing technological bottlenecks [3] - The event aims to ensure that technological advancements are accessible to rural communities, reinforcing the idea that technology is not distant but rather integral to local agricultural practices [3]
长庆油田页岩油日产量突破10000吨
Ke Ji Ri Bao· 2025-07-24 01:02
Core Insights - Changqing Oilfield's shale oil daily production has surpassed 10,000 tons, reaching 10,006 tons, marking a significant achievement in China's "shale revolution" [1][3] - In 2024, Changqing Oilfield is expected to produce 52.2% of the country's total shale oil output, having cumulatively produced over 18.5 million tons, establishing itself as a major shale oil production area in China [1][3] - The oilfield has deployed over 700,000 tons of production capacity this year, with 135 horizontal wells put into production, contributing an additional daily output of 1,320 tons, raising total production to 2 million tons [1][3] Industry Developments - Since 2011, Changqing Oilfield has adopted the North American shale revolution's "horizontal drilling + hydraulic fracturing" approach, conducting proactive technological research and pilot development experiments [2][4] - The oilfield has made significant advancements in understanding shale oil accumulation mechanisms and enrichment patterns, leading to the discovery of a 4 billion-year-old large inland freshwater lake basin's shale accumulation rules [2][4] - In 2018, Changqing Oilfield initiated the construction of China's first large-scale hydraulic fracturing scientific test site for shale oil, establishing key technologies for volume fracturing and enhancing single well output from 1.5 tons to 18 tons, overcoming global challenges in developing low-pressure shale oil fields [2][4]
兰州高新区生物医药企业 迎来“政策大礼包”
Ke Ji Ri Bao· 2025-07-24 01:02
Core Viewpoint - Gansu Province has introduced a policy plan to support the biopharmaceutical industry in the Lanzhou High-tech Zone, aiming to enhance innovation and promote sustainable development in the sector [1][2]. Group 1: Policy Implementation - The plan focuses on supporting the industrialization of gene and cell therapies, AI in pharmaceuticals, new vaccines, and precision diagnostics [2]. - A three-tiered collaborative approach will be adopted to address the needs of trial tasks and optimize work measures [2]. - The plan includes establishing a project list for innovative medical devices and providing a "green channel" for product registration and approval processes [2]. Group 2: Industry Goals - By the end of 2027, the total output value of the biopharmaceutical industry in Lanzhou High-tech Zone is expected to exceed 30 billion yuan [3]. - The plan aims to develop 3-5 generic drugs or biological products, 2-3 innovative drugs, and 3-5 new medical devices [3]. - The goal includes introducing over 20 high-level talents in the biopharmaceutical field and establishing more than 10 biopharmaceutical companies in the national base [3]. Group 3: Company Opportunities - Companies like Lanzhou Mingde Pharmaceutical Co. are positioned to benefit from the plan, focusing on the full industrial chain development of sheep placenta [3]. - The plan aligns with ongoing research projects in collaboration with local universities, enhancing the company's competitive edge in the biopharmaceutical market [3]. - Zhongnong Weite Biotechnology Co. is also leveraging the plan to develop new vaccines, targeting significant animal disease prevention needs [4].
深远海绿色智能技术试验船驶向“未来”
Ke Ji Ri Bao· 2025-07-24 01:02
Core Viewpoint - The "Future" deep-sea green intelligent technology experimental ship represents a significant advancement in China's maritime research capabilities, combining innovative design with multifunctional applications for deep-sea exploration and technology testing [1][2][3]. Group 1: Ship Specifications and Capabilities - The "Future" ship measures 110.8 meters in length, has a full load displacement of 7,000 tons, a maximum speed exceeding 15 knots, a crew capacity of 80, and an endurance of over 10,000 nautical miles with self-sustainability for more than 60 days [1]. - It is designed to operate in unlimited navigation areas, making it a versatile platform for various maritime research activities [1]. Group 2: Technological Innovations - The ship features a high degree of modularity, allowing for easy integration of various equipment and systems for real-time testing during voyages [2]. - It is equipped with a powerful A-frame capable of lifting 150 tons, enabling it to support deep-sea operations and the deployment of underwater equipment [2]. Group 3: Research and Testing Facilities - The "Future" ship includes a deep-sea equipment testing and operational support system, underwater acoustic systems, and a multi-disciplinary laboratory, facilitating comprehensive marine research and equipment trials [3]. - It serves as a "mobile laboratory" for scientists to collect environmental data and conduct experiments in deep-sea conditions [3]. Group 4: Smart Operations and Data Management - The ship's bridge is equipped with advanced monitoring systems that provide real-time data on various operational parameters, enhancing situational awareness [4]. - An intelligent information system, MarineNet, and a dynamic testing system enable comprehensive data management and connectivity between the ship and shore, promoting an open digital testing platform [5]. Group 5: Industry Impact and Future Outlook - The "Future" ship aims to bridge the gap between research and industrial application, fostering innovation and digital transformation within the maritime industry [5]. - It is positioned as a new cornerstone for high-quality development in China's shipbuilding and deep-sea technology sectors, supporting the industry's shift towards intelligent and green advancements [5].