Ke Ji Ri Bao
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科技重塑生产链,新疆棉“丝路出海”
Ke Ji Ri Bao· 2025-07-04 00:50
Group 1: Technological Innovation in Agriculture - The transformation of barren land into productive cotton fields in Xinjiang is attributed to advanced agricultural technologies, including smart monitoring and irrigation systems [2][3] - The implementation of "dark pipe salt drainage" and "water-saving irrigation" technologies has significantly improved land utilization and increased cotton yield from over 200 kg to 450 kg per mu, effectively doubling production [3] - The introduction of high-efficiency drip irrigation systems has reduced the number of valves needed for irrigation, leading to cost savings of approximately 1,000 yuan per valve [3] Group 2: Industrial Applications of Cotton - Xinjiang Yuan Yi Technology Co., Ltd. has developed a new type of ultra-thin steel paper from cotton, achieving a thickness of only 0.2 mm, which is considered a leading product in the domestic market [4] - The company invests 20% of its profits annually into R&D, collaborating with universities to overcome manufacturing challenges, resulting in increased product value and annual sales of around 5 million yuan [4] - The steel paper produced is primarily used in high-tech industries such as 5G base station construction and aerospace, capturing a 45% market share domestically and expanding into international markets [4] Group 3: Logistics and Export - Xinjiang's logistics network has evolved to facilitate the efficient export of cotton, connecting domestic production with international markets through a comprehensive transportation system [5][6] - The establishment of the International Public-Rail Combined Transport Logistics Park in Jinghe County has enhanced trade with Central Asian countries and Europe, reducing transportation costs and improving efficiency [6] - The integration of road and rail transport has streamlined the export process, allowing for quicker delivery of cotton and textile products to neighboring countries [6] Group 4: Overall Impact - The advancements in technology and logistics reflect the broader trend of industrial upgrading in Xinjiang's cotton sector, showcasing the region's potential for high-quality development [7]
低空飞行如何飞得好、管得好?
Ke Ji Ri Bao· 2025-07-04 00:50
Core Viewpoint - The Jiangsu Low Altitude Flight Service Center has launched a management platform for low altitude flight services, enabling efficient and safe management of both manned and unmanned aerial vehicles, addressing the need for streamlined flight plan submissions and real-time monitoring of flight activities [1][2]. Group 1: Services Provided to the Public - The management platform allows users to submit flight plans easily, reducing the occurrence of unauthorized flights [2]. - The platform offers various services including flight plan declaration, route planning, and weather information, enhancing the overall management of low altitude airspace [2]. - The platform ensures that users' planned routes do not conflict with restricted areas or other users' flight plans, promoting coordinated flight activities [2]. Group 2: Real-time Monitoring and Safety Measures - The platform refreshes flight information every 2 seconds, utilizing advanced technologies such as 5G and automatic surveillance systems for effective communication between drones and ground control [4]. - Specific "red zones" have been established where drone flights require prior approval, ensuring safety in sensitive areas such as highways and water sources [4]. - The platform issues alerts if drones enter restricted airspace, enhancing safety measures for low altitude operations [4]. Group 3: Integration of Manned and Unmanned Aircraft - Current regulations for airspace separation between manned and unmanned aircraft are lacking, posing challenges for safe coexistence [6]. - The center is developing a grid-based airspace management system to measure distances between aircraft, which will trigger alerts if safety distances are breached [6]. - The center plans to implement a phased approach to establish a comprehensive low altitude flight service system by 2030, aiming for improved coordination between manned and unmanned flights [6].
西气东输四线吐鲁番至中卫段贯通投产
Ke Ji Ri Bao· 2025-07-04 00:24
Group 1 - The successful commissioning of the Gansu-Ningxia section of the West-to-East Gas Pipeline Phase IV (Turpan-Zhongwei) is a key project under China's 14th Five-Year Plan for oil and gas development, enhancing the efficiency of international oil and gas resource allocation and ensuring energy security under open conditions [1] - The West-to-East Gas Pipeline Phase IV is a strategic energy corridor connecting Central Asia and China, with the Turpan-Zhongwei section being a core component, spanning 1,745 kilometers and accounting for over half of the total length [1][2] - The pipeline has a designed annual gas transmission capacity of 15 billion cubic meters, equivalent to replacing over 27 million tons of standard coal and reducing carbon emissions by approximately 50 million tons [1] Group 2 - The Gansu-Ningxia section of the pipeline is 1,162 kilometers long, starting from the Hongliu Compressor Station to the Zhongwei Liaison Station, and runs parallel to four other oil and gas pipelines, facing complex geological conditions and harsh natural environments [2] - The project has implemented technological, construction, and management innovations to address extreme weather and geological challenges, including the use of high-grade steel pipes and automated welding techniques, significantly improving construction efficiency and quality [2] - The West-to-East Gas Pipeline Phase IV will operate in conjunction with the second and third phases, enhancing the reliability and flexibility of the gas supply system, facilitating the transportation of gas from Central Asia and Xinjiang to key regions in China [3]
汽车运输船“远海口”轮完成首航
Ke Ji Ri Bao· 2025-07-03 23:34
据介绍,"远海口"轮总长199.9米,船舶总吨位68252吨,排水量39069吨。其内部拥有12层汽车甲板, 包括8层固定层和4层活动层,装载能力为7000标准车位,可承载商品车、工程车、大巴等全品类车辆。 该轮采用液化天然气(LNG)和燃油双燃料主机,较传统燃油船节省20%能耗,实现24%以上减碳率。 以典型的中国至欧洲往返航次为例,单航次可减少碳排放2100吨。该轮应用中远海运自主研发的国内首 个轿车和卡车运输汽车船实配装载软件,通过"一车一码一位"技术实现车辆实时定位与火灾预警,安全 护航新能源汽车出海。 记者3日从中远海运集团获悉,该集团旗下全球最大船载光伏能源汽车运输船"远海口"轮日前完成首 航,搭载4000辆国产汽车靠泊希腊比雷埃夫斯港汽车船码头。 "远海口"轮由中远海运特种运输股份有限公司(以下简称"中远海运特运")旗下远海汽车船运输有限公 司投资建造并运营。该轮配备峰值功率302.8千瓦的船载光伏系统,为同类船舶最大。年发电量达41万 度,全生命周期碳强度较传统船舶降低约35%。 "像'远海口'轮这样的船舶,将前沿技术与环保意识相结合,正在为汽车船运输领域树立新的标杆。"国 际海事联合会(希腊 ...
热辐射超材料用上“AI设计师”
Ke Ji Ri Bao· 2025-07-03 23:32
Core Viewpoint - The development of a reverse design AI model for thermal radiation metamaterials by a research team at Shanghai Jiao Tong University significantly enhances the efficiency of material design, enabling rapid generation of numerous candidate designs for various applications [1][2]. Group 1: AI Model Development - The AI model can filter through over 50,000 design combinations in just three months, a process that would take an astronomical amount of time using conventional methods [1]. - The model is inspired by the three-dimensional topology of biological structures and utilizes a novel "three-plane modeling method" to accurately describe three-dimensional structural units [1]. - A comprehensive database containing 57,110 sets of data has been established, linking materials, superstructures, and spectral performance [1]. Group 2: Practical Applications - The team validated the model's effectiveness by designing and experimentally verifying four types of thermal radiation metamaterials for specific applications, including flexible films, coatings, and patches [2]. - In outdoor tests, these metamaterials demonstrated excellent self-cooling effects, with single-band selective metamaterials showing surface temperatures 2.5°C and 5.3°C lower than broadband metamaterials and commercial white paint, respectively [2]. - The experimental results indicate the model's potential applications in building energy efficiency and mitigating urban heat island effects [2].
安徽合肥:“量子大道”越走越宽
Ke Ji Ri Bao· 2025-07-03 23:27
Group 1 - The core viewpoint of the articles highlights the significant advancements and applications of quantum technology in Hefei, particularly through the efforts of China Telecom Quantum Group, which has developed quantum encryption communication technology that has attracted nearly 6 million users [2][3] - Hefei is recognized as a major hub for quantum technology innovation in China, hosting about one-third of the country's quantum technology enterprises, and is actively transforming cutting-edge technology into a driving force for future industrial development [2][3] - The local government has established a dedicated team to support the quantum industry, facilitating collaboration between academia, research institutions, and enterprises to promote the integration of research and application [3][4] Group 2 - The successful commercialization of quantum technology relies on deep integration of research, industry, and application, with Hefei's government implementing policies to encourage this collaboration, including funding support for projects up to 10 million yuan [3][4] - The development of quantum technology products, such as long-distance single-photon imaging radar systems, has significantly accelerated, with timeframes for commercialization reduced from over 10 years to 3-5 years [4][6] - Initial funding is crucial for startups in the quantum industry, as demonstrated by the case of Yaozheng Quantum Technology Co., which received 30 million yuan in investment to support its development [5][6] Group 3 - Application scenarios are essential for the growth of the quantum industry, exemplified by the establishment of the first quantum application demonstration substation in Anhui, which integrates quantum measurement, communication, and computing [7] - Hefei has developed a complete ecosystem for the quantum industry, with nearly 90 upstream and downstream enterprises, making it a leader in the national quantum industry landscape [7][8] - The local government supports the quantum industry through various initiatives, including recognition programs for new technologies and products, which facilitate the practical application of quantum innovations [7]
青海西宁:废弃物“浴火重生” 电解铝绿色转型
Ke Ji Ri Bao· 2025-07-03 06:12
Group 1: Environmental Initiatives in Xining - Xining has made significant progress in ecological improvement, with forest coverage in the core area of the South-North Mountain Greening Project increasing from 7.2% to 79% since 1989, enhancing carbon sequestration [1] - As a second batch national carbon peak pilot city, Xining is implementing actions targeting major emission sources and promoting green transformations in urban construction, industry, and energy sectors [1] - The city has achieved a 100% resource utilization rate for municipal solid waste, effectively realizing waste reduction, resource recovery, and harmless treatment [3] Group 2: Waste Management and Recycling - Sheneng Huangshui Company specializes in waste incineration power generation, processing approximately 400 trucks of municipal waste daily, converting 1 ton of waste into 500 kWh of electricity [2] - The company employs advanced technologies for waste treatment, ensuring emissions meet standards while generating energy for sale [2] - Xining has closed or ecologically capped all 15 municipal waste landfills, becoming the first city in the Tibetan Plateau to achieve zero landfill for raw waste [3] Group 3: Aluminum Industry Transformation - China's electrolytic aluminum production accounts for half of the global output, with significant carbon emissions associated with traditional production methods [4] - Xining's Ganhua Industrial Park is recognized as a core production base for green electricity aluminum, with companies like Huanghe Xinye focusing on low-carbon transformation and green energy utilization [5][6] - By 2027, Xining aims for a 90% conversion rate of primary electrolytic aluminum products and a 75% share of clean energy in aluminum production [7]
【科技日报】科研人员制备高性能液流电池用超薄聚合物膜材料
Ke Ji Ri Bao· 2025-07-03 05:46
Core Insights - The research team has developed a high-stability ultra-thin polymer membrane with a thickness of only 3 micrometers, which enhances the working current density of all-vanadium flow batteries to 300 milliamps per square centimeter [1][2]. Group 1: Research and Development - The polymer ion-selective membrane is favored in the market due to its low cost and ease of large-scale production [1]. - Traditional polymer membranes often have irregular pore structures, making it difficult to accurately separate active materials and charge carriers in flow batteries [1]. - A new interfacial crosslinking strategy was proposed to create a robust covalent crosslink network in the membrane, improving mechanical stability even at reduced thickness [1][2]. Group 2: Performance and Applications - The pore size distribution of the membrane's separation layer ranges from 1.8 Å to 5.4 Å, allowing for precise separation of active materials and rapid conduction of charge carriers [2]. - The ultra-thin membrane exhibits ultra-low surface resistance and active material permeability across a wide pH range, reducing ion transport resistance [2]. - The membrane was tested in an all-vanadium flow cell, achieving an energy efficiency exceeding 80% at a high current density of 300 milliamps per square centimeter [2]. - The ultra-thin membrane can also be applied to alkaline zinc-iron flow batteries and aqueous organic flow batteries, demonstrating excellent performance at high current densities [2].
“肉食塑造人类”假说有了新证据
Ke Ji Ri Bao· 2025-07-03 04:09
Core Insights - The research provides molecular genetic evidence supporting the hypothesis that meat consumption has shaped human evolution, contributing to physical stature and cognitive abilities [8][9]. Group 1: Genetic Findings - A specific ancient genetic variant, "rs34590044-A," has been identified as a key factor in the evolutionary development of human height and metabolic rate, regulating the ACSF3 gene [3][4]. - The study reveals a genetic correlation between height and metabolic rate, indicating that both traits share a common genetic basis [4][6]. - The rs34590044-A mutation enhances the expression of the ACSF3 gene, which is crucial for metabolizing nutrients from meat, leading to more efficient energy utilization [6][7]. Group 2: Evolutionary Implications - The presence of the rs34590044-A mutation is significantly higher in populations with a history of high meat consumption, suggesting it was favored under evolutionary pressures related to diet [7][8]. - This research contributes to a broader understanding of human adaptive evolution, linking genetic variations to dietary changes and their impact on human development [8]. Group 3: Broader Context - The study situates the ACSF3 gene and the rs34590044-A variant within a larger framework of human metabolic adaptation, alongside other known genetic adaptations related to diet [8]. - It emphasizes that while the rs34590044-A mutation may enhance meat metabolism, it does not imply that individuals without this mutation cannot benefit from meat consumption [9][10].
为何动物伪装不完美也能吓退天敌?
Ke Ji Ri Bao· 2025-07-03 02:02
换句话说,"不像"不一定吃亏。如果它们能让一部分捕食者上当,就足够活下去并传宗接代了。这也解 释了为什么在自然界中,我们会看到如此多样的拟态形态——从完美复刻到似像非像,每一种都有它的 生存空间。 科学家还测试了"多面手"式拟态的想法,也就是试图同时模仿多种有毒生物。不过实验结果显示,这 种"广撒网"策略并没有带来额外的好处。也就是说,与其费劲地模仿多个对象,不如专攻一种,骗住关 键的捕食者更有效。 这项研究不仅揭开了拟态演化中的一个谜团,也让我们意识到:在大自然的舞台上,生存的关键不是完 美,而是够用。 哪怕只是披上一件"吓人"的外衣,只要能在关键时刻躲过一劫,就已经足够成功了。(记者 张梦然) 由英国诺丁汉大学科学家领导的研究团队用3D打印技术制作了一系列昆虫模型,包括真正的胡蜂、各 种不同程度模仿胡蜂的食蚜蝇,还有完全不相关的普通苍蝇。然后把这些小家伙放在野外,观察捕食者 的反应。 结果发现,鸟类这个主要的捕食者群体非常"眼尖"。它们不仅能分辨出哪些是真胡蜂、哪些是假货,还 特别擅长识别那些模仿得不够像的"冒牌货"。当面对这些3D打印的猎物时,鸟儿们大多选择避开真正 有毒的胡蜂模型,而更愿意尝试那些拟态 ...