环境浓度四环素调控脱氮副球菌生理响应机制。安徽师范大学供图 研究团队以典型反硝化细菌为对象，模拟环境中常见浓度的四环素类抗生素暴露情况。结果发现，即使在不足以杀死细胞的低浓度下，抗生素仍能显著 延缓硝酸盐的去除过程，并大幅增加氧化亚氮排放。通过酶活测定、细胞生理与转录组学分析，研究团队发现抗生素通过抑制蛋白质合成、干扰葡萄糖代谢 与电子传递，导致细胞内部氧化还原失衡和活性氧积累，进而优先抑制了还原氧化亚氮的酶活性，造成氧化亚氮积累。 该研究首次从"抗生素—微生物—温室气体"连锁机制的角度，阐明了亚致死浓度抗生素对氮循环的非致死性干扰途径，为科学评估抗生素污染的环境与 气候效应提供了新依据。研究成果提示，在环境风险评价和全球氧化亚氮排放模型中，应考虑低浓度抗生素的长期生态效应。 1月11日，记者从安徽师范大学获悉，该校水生态环境团队李想博士研究首次从细胞层面揭示了低浓度抗生素对微生物氮循环的干扰机制，发现其可显 著促进温室气体氧化亚氮排放，为认识抗生素污染气候效应提供新的科学证据。相关成果日前刊发在《环境科学与技术》上。 抗生素在土壤、水体和沉积物等环境中普遍存在，其中低浓度抗生素虽不直接杀灭微生物，却可能改变 ...

Core Viewpoint - The launch of the "cross-province handling" mechanism for electricity services in the northwest region marks a significant improvement in the convenience of electricity service access for users across provinces [1][2]. Group 1: Service Implementation - The first user to benefit from the new cross-province electricity service is a resident of Lanzhou, who previously had to return to his home county in Qinghai to complete the electricity service process [1]. - The new mechanism allows users to complete the application for new electricity service in any designated service hall in either Qinghai or Gansu, significantly reducing the time and effort required [2]. Group 2: Collaboration and Efficiency - The collaboration between State Grid Qinghai Electric Power Company and State Grid Gansu Electric Power Company has led to the establishment of a strategic cooperation agreement, enhancing service coordination between the two regions [1][2]. - The innovative service model includes "one location receiving applications, multi-location collaboration, internal circulation, and time-limited completion," achieving "same-city efficiency" for cross-province electricity services [2]. Group 3: Future Developments - The two companies plan to continuously improve their collaboration mechanism and expand the range of cross-province services, aiming to enhance the convenience and intelligence of electricity services [2]. - Future initiatives may include exploring integrated service scenarios such as "one matter handled at once," further supporting regional economic and social development through improved energy service [2].

在同时发表的新闻与观点文章中，德国斯图加特大学研究人员指出："这种对色彩与纹理的双重独立控 制，构成了自然界中最精密的伪装系统之一。" （文章来源：科技日报） 受章鱼等动物改变皮肤外观的启发，研究人员此次开发出了可编程薄膜，能实现纹理与色彩的动态转 换。该材料初始状态平整无纹，遇水膨胀后即显现图案与色彩。 利用电子束在薄膜上"刻写"图案，研究人员添加了产生色彩效果的光学层。这些变化发生迅速，多数色 彩转换耗时不到20秒，且材料进行数百次切换而性能不衰。根据皮肤接触液体的面不同，色彩与纹理还 能独立改变。 研究人员表示，此次成功证明方法的可行性，虽然当前每件装置仅能呈现单一图案，但未来版本有望实 现多图案显示、电子控制及大规模生产。 最新一期《自然》报告了美国斯坦福大学研究人员开发的一种新型合成皮肤，其突破性地可同时改变质 地与颜色。该技术未来有望应用于伪装、柔性机器人及先进显示等技术领域。 自然界中，章鱼、乌贼等头足类动物通过控制皮肤中的色素细胞和肌肉组织，可在毫秒级时间内改变体 色与纹理，实现与环境完美融合。这种生物伪装机制，涉及复杂的神经调控系统，而人工材料想要同时 实现颜色与纹理的独立、可逆调控，一直是 ...

Core Viewpoint - The first financial meteorological AI model "Entropy Machine" has been launched in China, developed by Fudan University and the National Meteorological Information Center, aiming to explore the role of meteorological factors in financial asset pricing and provide innovative tools for risk management and investment decision-making [1][2]. Group 1: Model Development and Purpose - "Entropy Machine" is based on global meteorological reanalysis data and stock price-volume data, capable of predicting short-term returns for the majority of A-share market stocks [1]. - The model's validation shows that it accurately identifies industries highly sensitive to meteorological factors, such as renewable energy (wind and solar), traditional oil and chemical industries, construction, and agriculture, aligning with the World Meteorological Risk Management Association's listed industries [1]. Group 2: Investment Strategy and Performance - Investment strategies constructed based on the model's test results have demonstrated consistent positive returns during historical backtesting across multiple time periods, preliminarily validating the effectiveness and application potential of meteorological factors in the A-share market [1]. Group 3: Applications and Implications - The "Entropy Machine" has broad applications in the financial sector, allowing companies in climate-sensitive industries to manage climate risks and maintain market value [2]. - Financial institutions such as banks and insurance companies can utilize the model for risk control in equity pledge businesses and expand into innovative climate investment and financing [2]. - Investors can use the model as an auxiliary tool for quantitative investment, while academia can leverage its outputs to test and refine asset pricing theories [2].

Core Insights - The research conducted by Hainan University's Coral Reef Ecology International Joint Research Center reveals that two common nitrogen pollutants, nitrate and ammonium, have opposing effects on corals under thermal stress [1][2] - The study provides a new perspective on how climate change and nutrient pollution jointly impact coral reef ecosystems and establishes a nitrate concentration threshold for seawater quality management [1] Group 1: Effects of Nitrogen Pollutants - Nitrate exacerbates coral bleaching by intensifying oxidative damage to symbiotic algae (zooxanthellae) and disrupting the stability of photosynthesis-related membrane structures, ultimately leading to a breakdown of the symbiotic relationship [1] - In contrast, ammonium enhances corals' heat resistance by boosting their antioxidant capacity and promoting the synthesis of lipids necessary for photosynthesis, thereby alleviating oxidative stress caused by high temperatures [1] Group 2: Management Recommendations - The research identifies a protective threshold for nitrate concentration at 0.13 mg/L (approximately 9 micromoles/L), below which coral bleaching under high temperatures can be effectively mitigated [2] - It emphasizes the need for strict local water quality management to control anthropogenic nitrate emissions, particularly in coastal areas like the Great Barrier Reef and Caribbean, where nutrient enrichment is primarily driven by nitrate [2] - The findings suggest that while climate change remains the greatest threat to coral reefs, managing nitrate pollution is crucial for enhancing the resilience of coral ecosystems against global climate change [2]

Core Insights - A new low-cost solution for all-solid-state lithium batteries has been proposed by Professor Ma Cheng from the University of Science and Technology of China, addressing the challenge of maintaining good interface contact without relying on high external pressure [1] Group 1: Technical Innovations - The newly developed solid electrolyte, lithium zirconium aluminum chloride oxide, has a Young's modulus of less than 25% and hardness of less than 10% compared to other mainstream inorganic solid electrolytes, making it suitable for commercial production [2] - The solid electrolyte maintains its inorganic powder form, allowing for effective adaptation to large-scale roll-to-roll production processes [2] Group 2: Performance Improvements - The lithium zirconium aluminum chloride oxide enables the pressure required for stable cycling of all-solid-state lithium batteries to be reduced from tens or hundreds of megapascals to just 5 megapascals, achieving hundreds of stable cycles at this lower pressure [2] - The core raw material for this new electrolyte, zirconium tetrachloride, is highly economical, costing less than 5% of mainstream sulfide solid electrolytes, indicating strong commercial viability [2]

Core Viewpoint - The article highlights the discovery of a radiation-exceeding "amulet" at Dalian Zhoushuizi International Airport, which poses significant health risks due to its radioactive content, specifically thorium-232, and warns consumers about similar products in the market [1][2]. Group 1: Health Risks - The detected amulet emitted a radiation dose rate of 168.6 microsieverts per hour, exceeding the background level by 1686 times, indicating severe radiation hazards [1]. - Prolonged exposure to such items can lead to irreversible health damage, including acute reactions like skin rashes and long-term risks such as leukemia and lung cancer [2]. - The presence of radioactive isotopes like thorium-232, uranium-238, and radium-226 in these products can cause genetic mutations and cellular damage [2]. Group 2: Regulatory and Preventive Measures - Customs authorities have intercepted multiple items containing radioactive isotopes through various channels, including cross-border e-commerce [2]. - Recommendations include avoiding the purchase of unverified "energy products" and ensuring that items come with proper certification and radiation detection reports [2][3]. - A comprehensive radiation prevention system has been established by customs, utilizing handheld nuclear identification devices and radiation detection equipment to monitor incoming goods [3].

Core Viewpoint - The People's Bank of China has launched the "Action Plan" to enhance the management and service system of the digital renminbi, marking the transition to the 2.0 era of digital currency, which includes a new measurement framework, management system, operational mechanism, and ecosystem [1] Group 1: Application Scenarios - The Action Plan indicates a shift from digital cash to digital deposit currency, allowing digital renminbi to function as a modern payment and circulation method with attributes of commercial bank liabilities [2] - Digital renminbi will now earn interest as it is treated as a deposit, enhancing benefits for both individuals and enterprises [3] - The digital renminbi has achieved full-scenario currency capabilities across various sectors, including retail, education, and cross-border payments, creating replicable and scalable application models [3] Group 2: Dual-Layer Architecture Optimization - The Action Plan optimizes the dual-layer operational system, where the central bank sets rules and standards while commercial banks manage customer wallets and ensure compliance [4] - The upgrade of the dual-layer architecture is expected to increase commercial banks' enthusiasm for promoting digital renminbi, as it aligns responsibilities and benefits [5] - Digital renminbi will be included in the reserve requirement framework, allowing banks to manage it as a liability, thus enhancing financial stability and security [5] Group 3: Technological Advantages - China's approach to digital renminbi combines account-based management with blockchain efficiency, aiming for lower costs and higher efficiency in digital payments [6][7] - The establishment of an international operational center for digital renminbi in Shanghai aims to enhance cross-border payment efficiency using blockchain technology [7] - The multi-central bank digital currency bridge has processed 4,047 cross-border payment transactions, with digital renminbi accounting for approximately 95.3% of the transaction volume, indicating its growing role in international trade [8]

Group 1 - The core achievement of Taiyuan Heavy Machinery Group is the development of the world's first high-altitude operation (empty container bundling) robot, which has passed acceptance testing and is now in production at Ningbo Zhoushan Port [1][3] - The port has an annual throughput of over 1.2 billion tons and handles more than 4 million containers each year, facing challenges such as low efficiency and high risk during seasonal typhoons [3] - The new intelligent operation system integrates a high-altitude work platform, robotic arm system, and visual recognition technology, marking a transition from manual to intelligent operations [3][4] Group 2 - The development team overcame several key technical challenges, enhancing the machine's environmental resistance and introducing real-time visual feedback and adaptive force control systems to ensure precision even in adverse weather conditions [4] - The main goals of the new equipment are to ensure safety, improve efficiency, and reduce costs, with the robot significantly increasing operational efficiency and eliminating high-altitude work risks [4] - The successful deployment of the robot exemplifies the company's commitment to innovation-driven development and aims to contribute to the high-quality development of China's manufacturing industry [4]

Group 1 - The core focus of the article is on the innovations showcased by BOE (京东方) at CES 2026, particularly in the fields of automotive intelligence and green technology [1][3] - BOE presented over 60 advanced display technologies and IoT solutions, aiming to foster collaborative innovation and ecological win-win scenarios with over 40 global partners [1] - The introduction of the HERO 2.0 smart cockpit marks a significant advancement in interactive experiences, emphasizing audio-visual enhancements and connectivity between vehicles and homes [1][3] Group 2 - HERO 2.0 incorporates AI technology for smart voice and gesture control, achieving a complex command recognition rate of 98% [3] - The cockpit features a central control screen that allows users to manage various functions such as sunroof control, food ordering, and home monitoring, facilitating "car-home" and "car-business" connectivity [3] - The world's first smart, independent vehicle amplifier with real-time AI sound quality restoration technology offers a high-fidelity audio experience, while the digital broadcasting system ensures quality audio and image transmission even without 4G or 5G signals [3]