Core Viewpoint - The successful launch of 18 low Earth orbit satellites for satellite internet by China Aerospace Science and Technology Corporation marks a significant achievement in the aerospace sector, contributing to the growing capabilities in commercial space endeavors [2] Group 1: Launch Details - The Long March 8A rocket was launched on January 13 at 23:25 from the Hainan commercial space launch site [2] - This mission successfully placed 18 low Earth orbit satellites into their designated orbits [2] - The launch represents the 625th flight of the Long March series of rockets [2] Group 2: Company Achievements - The 18 satellites were developed by the Fifth Academy of China Aerospace Science and Technology Corporation [2] - With this launch, the total number of spacecraft developed and successfully launched by the Fifth Academy has exceeded 600 [2]

Group 1 - The "Beijing Rocket Street" project has successfully completed its construction filing and has officially entered the delivery and operational phase, marking it as China's first commercial aerospace common testing and research production base [1] - The project was developed and managed by Yizhuang Holdings and constructed by Bodao Construction Company, featuring four main functional areas: common technology platform, innovation research center, high-end manufacturing center, and display and operation control center [1] - The project integrates existing industrial resources and provides over ten shared services tailored to the needs of the commercial aerospace industry, including satellite and rocket research and testing, smart manufacturing platforms, and integrated space-ground operation control [1] Group 2 - Beijing Yizhuang has become a strategic industry hub for commercial aerospace, with over 180 related enterprises, including a concentration of commercial rocket companies that account for 75% of the national total, forming a complete industrial chain covering various aspects of aerospace [2] - The "Beijing Rocket Street" utilizes an intelligent IoT system to create a smart park management system, enhancing the attractiveness of the Beijing Economic Development Zone to leading commercial aerospace companies and their supply chains [2] - The initiative aims to build an innovative industrial cluster with the vision of "thousand enterprises linked, thousand stars launched, and thousand billion revenue" [2]

Core Viewpoint - The establishment of Gestala, China's first ultrasound brain-computer interface company, marks a significant advancement in the field of brain-computer interfaces, focusing on a new route centered on ultrasound technology [1][2]. Group 1: Company Overview - Gestala was co-founded by Peng Lei, former CEO of Brain Tiger Technology, and Chen Tianqiao, founder of Shanda Group and Tianqiao Brain Science Research Institute [1]. - The company is based in Chengdu and aims to explore next-generation platforms for reading and writing brain signals [1]. Group 2: Technology and Innovation - Ultrasound brain-computer interface technology addresses traditional challenges in brain science research, particularly the difficulties in achieving both "whole-brain imaging" and "real-time response" [1]. - Unlike invasive electrodes and functional MRI (fMRI) that have delays of 3-10 seconds, ultrasound technology allows for non-invasive, precise modulation of specific brain areas and high temporal and spatial resolution recording of blood flow signals in different brain regions [1]. Group 3: Collaborations and Future Plans - Gestala has established collaborative frameworks with Huashan Hospital, Xiehe Hospital, and West China Hospital, aiming to deepen industry-academia-research-medical cooperation for clinical studies on various indications [1]. - The company plans to leverage China's advantages, such as policy support, abundant talent, low clinical costs, large patient scale, and a complete industrial chain, to potentially achieve a competitive edge in the ultrasound brain-computer interface field [2].

有网友近日发文称，用湿巾擦拭某高端品牌手机后，手机"毁容"—— 机身部分着色层脱落，露出金属底色。相关专家表示，用湿巾擦拭并 非掉色主要原因。不过，此事引发了网友关于清洁手机方法的讨论， 也意外带火了屏幕专用清洁湿巾等清洁产品。那么，我们应该如何科 学清洁电子产品？ 为保护产品表面不被腐蚀，严禁使用窗户清洁剂、家用多功能清洁 剂、喷雾剂、氨水等产品或含过氧化氢的强氧化剂进行清洁。与此同 时，应避免将电子产品长时间置于高温、高湿环境，以免破坏屏幕疏 油层和机身防护层。在选择湿巾时，建议优先选用符合《湿巾及类似 用途产品》（GB/T27728—2024）、《一次性使用卫生用品卫生要 求》（GB15979—2024）等标准的产品，避免使用含腐蚀性成分的 劣质湿巾。除此之外，需注意不要过度清洁，频繁使用湿巾擦拭可能 加速机身表面的损耗。 赵旭辉还强调，钢丝球、粗糙抹布等硬质工具会造成电子产品磨损， 柔软、不起毛的超细纤维布是清洁的最佳选择。在日常使用时，用户 可以给手机"穿"上官方厂商认证的手机壳，减少机身直接暴露在外的 机会，从而减少不必要的刮擦。（记者 王姗姗） 北京化工大学材料科学与工程学院副教授赵旭辉在接受科 ...

1月13日，记者从南京农业大学（以下简称南农）获悉，该校主导研发出国内首个面向通用农业领域的 开源垂直大语言模型"司农"。这标志着南农在农业领域的人工智能基础模型研究与应用取得新突破。 据悉，研究团队依托南农学科优势，收集了包括动物科学、农业经济管理、农业资源与环境、园艺学、 智慧农业、动物医学、植物保护、作物育种等学科数据，涵盖了近9000册书籍、24万余篇学术论文和近 2万份政策、标准，构建了体系相对完整的农业基础数据集。 针对文献知识利用效率问题，团队推出多智能体检索增强框架。该框架通过优化知识库构建、智能查询 改写、混合检索等策略，使模型能够精准调用专业知识，有效保障了生成内容的准确性与时效性。 目前，司农大语言模型已在魔塔社区和GitHub社区全面开源，发布了8B和32B两种参数规模的版本。这 一开源开放策略，旨在降低农业AI应用门槛，助力广大科研机构、企业和开发者基于司农大语言模型 进行二次开发与创新应用，共同培育智慧农业的应用生态。 （文章来源：科技日报） 针对大语言模型在专业领域应用中常见的"幻觉问题"和知识滞后性，团队在模型训练阶段，除微调传统 指令外，还引入了思维链和上下文参考等多维训练数 ...

Core Insights - The research reveals that a significant impact event approximately 4.25 billion years ago in the South Pole-Aitken basin not only created the largest crater on the Moon but also altered the deep material on the Moon's far side, leading to the loss of certain volatile elements [1] Group 1: Impact of the Research - The study provides critical samples from the South Pole-Aitken basin, which is the largest impact basin on the Moon, enabling a deeper understanding of the effects of large impact events on the Moon's interior [1] - The research highlights that asteroid impacts have been the primary external force shaping the Moon's surface since its formation, creating numerous craters and basins that significantly altered its topography and chemical composition [1] Group 2: Isotope Analysis Findings - The analysis of potassium isotopes from the lunar basalt samples collected by the Chang'e 6 mission shows a significantly higher proportion of the heavier potassium isotope (K-41) compared to samples from the Moon's near side [2] - The study concludes that the early large impact event altered the potassium isotope composition of the Moon's deep mantle, with the high-temperature and high-pressure conditions during the impact causing the lighter potassium isotope (K-39) to escape, resulting in a relative enrichment of K-41 in the remaining material [2] - This loss of volatile elements is suggested to have potentially suppressed later volcanic activity on the Moon's far side, providing key scientific insights into the differences in geological evolution between the Moon's near and far sides [2]

Core Viewpoint - The recent social media trend suggests that being slightly overweight after the age of 40 may be linked to longevity, sparking discussions on the relationship between weight and health in middle-aged and elderly individuals [1] Group 1: BMI and Longevity - The Body Mass Index (BMI) is a common measure for overweight and obesity, with normal BMI ranging from 18.5 to 23.9, overweight from 24 to 27.9, and obesity at 28 or above [2] - A study published in "Cell Reports Medicine" found that middle-aged individuals with a BMI in the overweight range are more likely to live longer, with ideal BMI figures for longevity being 26.3 for men and 25.4 for women [3][4] - The Chinese Dietary Guidelines recommend a BMI range of 20 to 26.9 for older adults, aligning with the findings that slightly higher BMI may be beneficial for energy reserves and immune resistance [3][4] Group 2: Importance of Muscle and Fat Ratio - Experts emphasize that managing the ratio of muscle to fat is crucial for the health of middle-aged and elderly individuals, as adequate fat reserves are essential for energy storage and organ protection [5] - Muscle mass is critical for overall health, influencing bodily functions and recovery from illness, with significant muscle loss expected as individuals age [5][6] - Maintaining sufficient muscle mass is likened to having a "strong ammunition depot" that aids in disease resistance and recovery [5] Group 3: Recommended Body Fat and Muscle Standards - Recommended body fat percentages for middle-aged individuals are approximately 25% for women and 20% for men, while older adults should aim for around 30% for women and 20% for men [7] - Muscle mass recommendations suggest that middle-aged women should have 20% to 30% skeletal muscle mass, while men should have 25% to 35% [7] Group 4: Diet and Exercise Recommendations - A balanced diet and regular exercise are essential for achieving the desired muscle-to-fat ratio, with recommendations for middle-aged individuals to limit carbohydrate intake and ensure adequate protein and vitamin D3 consumption [8][9] - Effective exercise should include resistance training and aerobic activities, with specific heart rate targets for optimal results [8][9] - The suggested exercise regimen includes three weekly sessions of resistance training and two sessions of aerobic exercise, emphasizing the importance of warming up before workouts [9]

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 ...