记者24日从南京大学获悉，该校科研团队通过构建高精度的非光合植被（NPV）遥感观测反演框架，首 次绘制全国陆地NPV最大覆盖度时空分布图，并创新性地提出陆地生态系统碳交换通量指数，揭示了中 国陆地生态系统中，NPV对气候梯度的响应特征及其在碳循环中的核心作用。该成果近日刊发于中国地 学领域期刊《中国科学：地球科学》。 在此次研究中，团队对2016—2024年的中国全境进行300米分辨率的年度最大NPV覆盖度估算。 "研究发现，在750—900纳米的光谱范围中，NPV和裸露土壤呈现出不同的反射光谱曲线形态。"田庆久 介绍，经团队计算，全国年平均非光合植被覆盖度峰值约占所有土地面积的37%，并以每年0.14%的速 度显著增长，其中大部分由裸露土壤转化。其中，半干旱至半湿润区是NPV分布的高值区和快速增长 区，增速达0.75%。季度气温和降水是影响NPV空间变化的主导因素。 "此次研究揭示了NPV在调节地表能量平衡和土壤碳封存中的作用愈发重要。"田庆久说，该研究填补了 我国大范围NPV动态监测估算的空白，对于精准评估我国不同气候区陆地生态系统的抗逆性及碳循环反 馈机制具有重要价值。 （文章来源：科技日报） NPV包 ...

其中，全新亮相的6SV3产品，作为15L燃气机新标杆，拥有200万公里的超长寿命、领先1—2kg的超低 气耗、领先40%的超快响应等特性，覆盖长春、青岛基地全部主销车型，在新疆线、云南线、青藏线及 东北线的典型干线物流路线场景进行了实车深度验证，能够满足客户多场景运输需求。 同时，本次迭代升级推出的6SX1 PRO 产品也备受瞩目。作为国内首款批量上市的16L重型燃气机， 6SX1持续引领行业大马力化发展趋势，此次其升级款—6SX1 PRO更是实现核心性能的全面跃升，不仅 巩固了一汽解放在大马力燃气机市场的标杆地位，更是全面满足长途干线、重载运输等多场景高效运营 需求，为用户打造极具竞争力的"挣钱机器"。 此次NG重型发动机产品焕新发布，标志着一汽解放在天然气动力领域的技术实力与产品布局再上新台 阶。未来，一汽解放将继续秉持"以用户为中心"理念，以过硬的产品与服务为用户创造更大价值，不断 引领中国商用车行业向高质量、可持续发展方向稳步迈进，书写行业发展新篇章。 近日，以"智领全球 质赢未来"为主题的一汽解放2026全球合作伙伴大会在成都开幕。当日下午，NG重 型发动机产品焕新发布会召开。 一汽解放党委委员、副 ...

Group 1 - The first batch of wind power steel products, 100mm thick wide plates, has been successfully produced and shipped by Xinjiang Bayi Steel Group, achieving full specification coverage for wind power steel products [1] - The new products will be used in the manufacturing of wind turbine towers, meeting local and high-end steel demands [1] - Previously, the company could only produce wide plates with a maximum thickness of 60mm, which only met the production needs for the upper part of the tower [1] Group 2 - After a year of technical breakthroughs and production line construction, the company has successfully overcome the production challenge for wide plates with a maximum thickness of 100mm [1] - The steel used for wind turbine towers must meet stringent quality requirements, including welding performance, mechanical properties, and low-temperature impact toughness [1] - The company has established strict control indicators for all production stages, ensuring that the products maintain good impact toughness and performance even under extreme conditions of -40°C [1] Group 3 - Each wind turbine tower requires approximately 30 different specifications and models of wide plates, necessitating fully customized production [2] - The company currently has an annual production capacity of 1 million tons of wide plates, enabling customized production and complete delivery according to tower requirements [2] - The company aims to deepen cooperation with partners in the wind power industry in the areas of product high-end and green development, contributing to the efficient advancement of wind power projects in Xinjiang [2]

记者12月19日从国网鄂州供电公司获悉，由该公司研发的无人 机智能核相定相装置已通过国家专利初审，并成功应用于鄂州110千 伏临旭线迁改工程、鄂州110千伏郎樊线技改工程。该装置是国内首 台适用于10—500千伏全电压等级的无人机智能核相定相装置，相关 技术规范与操作手册已编制完成，该装置接下来将在湖北省推广应 用。 作为电网建设的关键环节，核相是主配网送电前的最后一道安全 防线，其结果的准确性直接关系到电网和设备的安全和稳定运行。长 期以来，传统核相主要依赖人工手持式、PT（电压互感器）感应式 两种核相方式，存在人身风险突出、作业效率较低、应用场景受限等 问题。 决了新建变电站无参考源核相的行业难题，拓展了核相作业的适用场 景，增强了灵活性。（记者吴纯新 通讯员陈丽 刘洪峰） 无人机智能核相定相装置从源头化感知、空间化作业、智能化同 步系统性解决了核相工作难题，为电网安全高效建设提供全新技术支 撑。以前核相是既危险又繁琐的体力活，现在成了又快又安全的"科 技活"。 该装置创新融合北斗/GPS微秒级同步授时、电场感应、4G网络 传输与无人机操作平台，好比给电网"隔空把脉"，通过近程核相、远 程核相、网络定相三 ...

Core Insights - The research team successfully reduced carbon dioxide byproduct content in iron-based Fischer-Tropsch synthesis from approximately 30% to below 1% by adding halogen compounds at a concentration of one part per million, while increasing the yield of high-value olefins to over 85% [1][2][3]. Group 1: Current Challenges in Fischer-Tropsch Synthesis - Fischer-Tropsch synthesis is a crucial catalytic reaction technology in the chemical industry, primarily used to convert syngas (a mixture of carbon monoxide and hydrogen) into liquid fuels or high-value chemicals [2]. - The iron-based catalyst is favored in over two-thirds of industrial processes due to its low cost and high oil production rate, but it is associated with significant carbon dioxide emissions [2][3]. - Traditional iron-based Fischer-Tropsch synthesis processes often have a carbon dioxide selectivity as high as 30%, meaning that for every 100 carbon atoms converted, 30 become greenhouse gases [2][3]. Group 2: Innovative Halogen Regulation Strategy - The research introduces a trace halogen regulation strategy, where halogen compounds like bromomethane and iodomethane are added to the reaction gas at a concentration of one part per million [3][4]. - This strategy acts as a "molecular switch," effectively blocking the pathway that generates carbon dioxide while enhancing the production of olefins [4]. - The addition of halogen compounds prevents excessive hydrogenation of hydrocarbons, allowing more carbon atoms to be utilized for olefin production [4]. Group 3: Practical Implications and Future Directions - The halogen regulation strategy is practical and convenient, requiring no major modifications to existing catalysts or equipment, only the addition of trace halogen gases at the inlet [4][5]. - The research team is actively collaborating with relevant enterprises for pilot-scale testing and long-term stability assessments, aiming to expedite the industrial application of this strategy [5]. - Key challenges for industrialization include precise dosing and concentration control of halogen compounds, ensuring the stability of iron-based catalysts over long operational periods, and adapting the strategy to different gasification feedstock compositions [5].

Core Viewpoint - The recent attention on Antarctic krill oil highlights its marketing as a rich source of valuable Omega-3 fatty acids, referred to as the "golden liquid" of health products [1] Group 1 - Antarctic krill oil is being promoted by businesses for its health benefits, particularly its high Omega-3 fatty acid content [1] - There is a need for expert clarification on the actual health benefits of Antarctic krill oil [1]

"人工智能应该说是一种革命性的技术发展潮流，对于各行各业都是赋能的最佳契机。"12月23日，在国 务院新闻办公室就新时代交通运输服务经济社会高质量发展举行的新闻发布会上，交通运输部副部长李 扬表示，交通运输行业作为人工智能落地领域，场景多元、数据丰富、应用需求巨大，是一个庞大的人 工智能应用场景。 交通运输部高度重视人工智能应用。今年9月，交通运输部会同国家发展改革委等六部门，印发《关 于"人工智能+交通运输"的实施意见》，对人工智能在公路、铁路、水路、民航、邮政和综合交通方面 进行了总体部署，画出了"路线图"。 除政策体系不断完善，李扬介绍，在夯实数智底座方面，交通运输部加快建设国家综合交通运输信息平 台，谋划和部署综合交通运输大模型，推动打造"数据中枢"和"智慧大脑"；在加快场景培育方面，形成 了860项场景应用的"全景图"，聚焦智慧港口、应急物流、国际物流供应链韧性等重点方向，推动建设 青岛、绵阳、厦门3家国家人工智能应用中试基地，加快打造"人工智能+交通运输"创新高地；在优化产 业生态方面，指导成立了交通大模型创新与产业联盟，首批已吸纳55家头部企业，成功举办首届综合交 通运输大模型智能体创新应用大赛 ...

南极活动与环境保护法草案（以下简称"草案"）12月22日提请十四届全国人大常委会第十九次会议首次 审议。草案规定，国家鼓励和支持开展南极基础研究和科技创新，加强专业人才培养与队伍建设，推动 长期研究工作，增强科技支撑保障能力。 全国人大环境与资源保护委员会主任委员鹿心社介绍，制定南极活动与环境保护法，是我国参与南极全 球治理的有力支撑，也是协调、管理和规范南极活动的现实需要。开展极地考察40多年来，我国的南极 事业从无到有、由弱到强，在南极持续开展了海洋生态、地质学、空间科学、气候变化等多方面的科学 研究。 "制定南极活动与环境保护法，有利于加强我国南极活动统筹协调和监督管理，为进一步增强南极活动 能力，实现和平利用南极夯实法律基础。"鹿心社说。 在保障与监督方面，草案提出国家采取措施加大对南极技术装备研发及基础性、公益性南极考察和科学 研究的支持力度，加强南极考察站、通信网络、观测监测网、导航系统、运输体系、应急救援体系等基 础设施建设，提升南极活动和安全保障能力；国家建立南极考察活动样品和数据汇交制度。（记者吴叶 凡） 草案共七章五十七条，对在南极开展的考察、渔业、旅游、航运等活动进行了相关规定。 在南极 ...

Group 1 - The core viewpoint of the articles highlights the recent failures in China's space launch attempts, specifically the unsuccessful recovery of rocket stages, which underscores the inherent high-risk nature of space exploration [2][3]. - The Long March 12 rocket's launch on December 23 faced a failure in stage recovery, following a similar setback with Blue Arrow Aerospace's Zhuque-3 rocket just 20 days prior, indicating a trend of challenges in reusable rocket technology [1][2]. - The complexity of rocket recovery is emphasized, comparing it to the difficulty of accurately dropping a needle from several kilometers high, which involves precise control of various technical parameters [2]. Group 2 - The recent failures in rocket recovery reveal significant technical shortcomings and highlight the challenges that lie ahead for China's space industry, which is striving to reduce costs associated with space access [3]. - The industry recognizes that the high difficulty and failure rates of rocket recovery are common challenges globally, with only a few rockets, such as SpaceX's Falcon 9 and New Glenn, having successfully completed this task after extensive trial and error [2]. - The articles advocate for a realistic approach to space exploration, emphasizing the importance of accepting risks and learning from failures as essential steps in advancing China's space capabilities [3].

Group 1: Hydrogen Energy Development - Fujian has prioritized the hydrogen energy industry as a key strategic direction for green energy development, establishing innovation laboratories and conducting forward-looking research since 2019 [2][3] - The hydrogen storage and transportation technology is a critical challenge for the hydrogen industry, with Fuzhou University leading efforts to develop ammonia as an efficient hydrogen storage carrier [2] - A hydrogen industry working group has been established in Fujian to address urgent technical issues and promote collaborative breakthroughs across the entire hydrogen value chain [3] Group 2: Technological Innovation Platforms - Fujian supports the establishment of high-level scientific innovation platforms led by private enterprises to enhance the integration of technology and industry [4] - The Ningde Times Innovation Laboratory, co-built with the Ningde municipal government, has accelerated the development of new battery technologies, enabling rapid product launches [4][5] - Ningde Times has invested over 80 billion yuan in R&D, employing over 20,000 personnel and holding more than 43,000 patents, positioning itself as a leader in the global new energy sector [5] Group 3: Biopharmaceutical Industry Focus - Fujian has made significant strides in the biopharmaceutical sector, exemplified by the launch of the domestically developed nine-valent HPV vaccine, which enhances accessibility for women [6][7] - The establishment of the Xiang'an Innovation Laboratory aims to facilitate the transformation of biopharmaceutical innovations into practical applications, improving the success rate of technology transfer [7] - Fujian's government has implemented targeted policies to strengthen the biopharmaceutical innovation ecosystem, focusing on health needs and enhancing the overall industry chain [6][7]