来源：科技日报 科技日报记者 叶青 通讯员 华轩 你有没有过这样的体验？长时间独处后，明明没发生什么事，却莫名心慌、坐立不安甚至对社交产生恐 惧。这其实是"社交隔离"在悄悄改变你的大脑。 近日，华南理工大学医学院王卓副教授团队联合浙江大学、南方医科大学等单位，在国际期刊《细胞· 代谢》上发表原创性研究成果。该研究首次揭示了社交隔离会触发大脑特定区域的"铁堆积"，进而激活 一条全新的神经可塑性通路——研究团队将其命名为"铁可塑性"。这项发现，不仅解开了"孤独伤脑"的 长久谜题，更开辟了一条无需传统抗焦虑药物无创可逆的全新干预路径。 团队通过模拟人类长期独居的小鼠模型，发现了被单独饲养的小鼠，其大脑中一个叫 "腹侧海马" 的区 域（更偏好调控情绪的海马亚区）铁含量异常升高。 别小看这点"铁"——它可不是补品！过量的铁，就会像"错误信号"一样，激活一种名为α-突触核蛋白的 分子，导致神经元过度放电。这就像电路短路一样，不断向身体发送"危险！快逃！"的焦虑警报。更关 键的是，这种变化精准锁定情绪中枢，让大脑对"社交剥夺"有高度特异的应激反应。 过去，人们认为铁只是维持神经健康的"营养元素"，但该研究证明，在心理压力下 ...

Core Insights - The research team from the University of Science and Technology of China has developed the world's first quantum sensing network based on atomic nuclear spins, significantly enhancing the sensitivity for dark matter detection [1][3] - Dark matter, which constitutes approximately 26.8% of the universe, interacts through gravity but not electromagnetically, making it challenging to detect [1] - The team has established a distributed detection network using five ultra-sensitive quantum sensors, achieving detection precision that surpasses astronomical observations by 40 times in certain mass ranges of axions, a leading candidate for dark matter [3] Group 1 - The quantum sensors are equipped with advanced features that allow for the storage of fleeting signals in a nuclear spin coherence state for nearly a minute, greatly extending the detection window [1] - The team has developed a self-research quantum amplification technology that enhances weak signals by a factor of 100, making it easier to detect subtle interactions [1] - The breakthrough adds a new, more precise tool to humanity's arsenal for searching for dark matter, with potential future enhancements in sensitivity through global networking and space deployment [3] Group 2 - The sensors are deployed in Hefei and Hangzhou, synchronized via satellite for precise timing, forming a distributed detection network [3] - After two months of continuous observation, the team has provided the strictest constraints on dark matter models across a wide range of axion masses [3] - Future collaborations with gravitational wave observatories could further increase detection sensitivity by four orders of magnitude [3]

全固态真空紫外激光源（波长≤200纳米）因光子能量高、光束质量好、结构紧凑且稳定性强等特性， 在精密加工、高端科研装备等多个领域具有不可替代的战略意义。长期以来，氟代硼铍酸钾晶体 （KBBF）是唯一能够通过直接倍频技术实现200纳米以下激光输出的实用晶体，由陈创天院士团队在 20世纪90年代发明。随着应用需求的不断发展，寻找下一代性能更优的新型晶体成为该领域的挑战性科 学难题。 "非线性光学晶体是实现这一激光输出的核心材料。"新疆理化所所长潘世烈介绍，作为激光设备的关键 部件，该类晶体可以转换激光频率，从而获得不同波长的激光，满足多样化的应用需求。如何突破这一 技术桎梏？潘世烈团队从源头出发，创造性地提出"氟化"设计思想，将元素周期表中电负性最强的氟元 素引入到硼酸盐晶体结构中，攻克对非线性光学材料关键性能的协同调控和晶体生长技术难题，成功获 得厘米级高光学质量的ABF单晶，为紧凑、高效的全固态真空紫外激光器提供了全新的材料体系。 "新晶体的加工器件制造尤为困难，其软硬度等各种物理参数的匹配都需要从头摸索。"潘世烈说，经过 长期试验，团队自主研发出一套完整适配ABF晶体的器件加工工艺，涵盖从定向切割、粗抛到精 ...

Core Viewpoint - The rise of Generative Engine Optimization (GEO) services is reshaping digital marketing, allowing businesses to enhance their visibility in AI search results, but it raises concerns about consumer deception and the ethical implications of such practices [1][3]. Group 1: GEO Services Overview - GEO services claim to help businesses achieve priority recommendations in AI search results from platforms like ChatGPT and DeepSeek, thereby capturing targeted traffic [1]. - Companies specializing in AI search optimization are emerging, focusing on improving clients' search exposure through various technical means [4][5]. - The service process typically involves keyword selection, optimization execution, and verification of ranking results, with costs ranging from 4,000 to 6,000 yuan per quarter in Beijing [5]. Group 2: Consumer Concerns - Consumers are increasingly reporting confusing and misleading search results from AI, where advertisements are not clearly marked, leading to perceptions of biased recommendations [3][4]. - The blending of genuine product information with promotional content has led to accusations of AI-generated results being akin to "digital garbage" [3]. Group 3: Industry Criticism and Legal Implications - The GEO industry faces criticism for potentially manipulating AI search results, raising ethical questions about the responsibility of AI service providers and third-party marketers [6][8]. - Legal experts highlight that misleading AI marketing practices could violate advertising laws, as they may mislead consumers and infringe on their rights [9][10]. - Current regulations do not impose specific responsibilities on AI service providers, complicating accountability for misleading content generated by AI [10]. Group 4: Regulatory and Governance Recommendations - Effective regulation of AI marketing practices is deemed necessary, relying on administrative oversight and industry self-regulation rather than solely on post-fact civil liability [11]. - Authorities are encouraged to enhance enforcement against false advertising and unfair competition using AI, while promoting industry standards for data quality and content compliance [11].

Core Viewpoint - The rapid development of the HarmonyOS ecosystem, driven by national strategies and technological advancements, positions it as a key player in the digital economy, with Xiamen emerging as a significant hub for its implementation and innovation [1][2][3]. Group 1: HarmonyOS Development - HarmonyOS has evolved from its debut in 2019 to commercial use in 2024, completing a decade's worth of development in just five years, showcasing remarkable speed in the industry [1]. - The ecosystem addresses traditional operating system challenges such as poor device compatibility and low development efficiency, facilitating a shift from functional hardware to scenario-based services [2]. - The strong policy support, including the "14th Five-Year Plan" and "15th Five-Year Plan," emphasizes the importance of foundational software and operating systems as key areas for breakthrough [2]. Group 2: Xiamen's Role in the Ecosystem - Xiamen has established the first HarmonyOS-themed developer innovation center in the country, which serves as a platform for enterprise empowerment, talent cultivation, and ecological aggregation [3][5]. - The center collaborates with nine local associations and has developed numerous local enterprises into Huawei's HarmonyOS ecosystem partners, fostering industry clustering [5]. - Xiamen's ecosystem includes applications in smart home, smart healthcare, smart shipping, and financial technology, demonstrating a diverse and growing application matrix [5]. Group 3: Achievements and Impact - Over three years, the center has empowered more than 110 enterprises and created over 20 benchmark cases in various industries, while also training over 1,300 certified HarmonyOS engineers [7][9]. - The center has played a crucial role in bridging the gap for traditional enterprises lacking the capability to adapt to new operating systems, facilitating their transition to HarmonyOS [8]. - Successful commercial cases, such as the significant sales growth of products upgraded to HarmonyOS, highlight the ecosystem's potential to drive new growth curves for businesses [11]. Group 4: Developer Opportunities - The expanding demand for HarmonyOS has created a wide range of opportunities for developers, from application adaptation to vertical industry solutions [13]. - The center provides systematic support for developers, including technical exchanges, training, and access to resources, enabling them to enhance their skills and participate in commercial projects [13]. - The success stories of local enterprises serve as a direct value guide for developers, indicating that engaging with HarmonyOS can lead to tangible business benefits [13]. Group 5: Future Prospects - The HarmonyOS ecosystem is expected to continue growing, with Xiamen positioned to leverage its existing strengths in areas like smart oceans and green buildings [14]. - The integration of cutting-edge technologies such as AIoT is anticipated to further expand the application space for HarmonyOS [14]. - Xiamen's experience demonstrates that with the right focus and execution, cities can become fertile grounds for innovation and digital transformation [14].

Core Viewpoint - The news highlights a temporary disruption in the Douyin platform, where users experienced issues with search functionality while video playback remained unaffected [1][2]. Group 1 - Users reported that Douyin could not display search results or showed blank pages when keywords were entered [2]. - The video browsing feature on Douyin was not impacted by the search issues [2]. - Douyin's customer service stated that there was no official notification of a system crash, attributing the problems to potential network fluctuations, device cache issues, or outdated app versions [5].

Core Viewpoint - The price of lithium carbonate has surged to a nearly two-year high, driven by strong demand from the electric vehicle sector and supply constraints in the lithium market [2][3][4]. Group 1: Price Trends and Market Dynamics - As of January 14, lithium carbonate futures reached 168,000 yuan/ton, while the average price in the spot market hit 166,000 yuan/ton, marking a significant increase from the June 2025 low of 58,000 yuan/ton, nearly doubling in price [2]. - The demand for lithium carbonate is expected to continue rising due to the growth of the electric vehicle industry, with production and sales of new energy vehicles in China reaching 16.62 million and 16.49 million units respectively in 2025, reflecting year-on-year growth of 29% and 28.2% [2][3]. Group 2: Supply Constraints - Supply shortages are exacerbated by several lithium companies facing production challenges, such as Ganfeng Lithium's Cauchari-Olaroz project and Tianqi Lithium's Sichuan expansion, which are currently ramping up production [3][4]. - Regulatory changes, including the new Mineral Resources Law and stricter oversight of lithium mining, have led to expectations of reduced short-term lithium resource supply, contributing to the price increase [4][5]. Group 3: Price Transmission in the Supply Chain - The price increase in lithium carbonate has triggered a ripple effect throughout the lithium battery supply chain, impacting the prices of hexafluorophosphate lithium, electrolyte, and battery materials [6]. - Major battery manufacturers have begun raising prices, with Dejia Energy increasing battery product prices by 15% in December 2025, indicating a broader trend of price adjustments across the industry [6][7]. Group 4: Industry Restructuring and Innovation - The rising prices are prompting a restructuring of the industry, with leading companies leveraging scale advantages and long-term contracts to stabilize costs and enhance competitive positioning [7][11]. - Companies are also accelerating the development of solid-state batteries and sodium-ion batteries as alternatives to lithium-ion technology, although these alternatives still face challenges in energy density compared to lithium-ion batteries [8][11]. Group 5: Future Price Outlook - Short-term forecasts suggest that lithium carbonate prices may remain high, potentially reaching 180,000 to 200,000 yuan/ton, driven by strong demand and supply constraints [9][10]. - However, there are contrasting views on the sustainability of high prices, with some experts predicting a return to more balanced supply and demand dynamics by 2026, which could lead to price declines [9][10].

Core Viewpoint - China's 42nd Antarctic Expedition is currently underway, with the "Snow Dragon" conducting ocean operations in the Amundsen Sea, completing 8 survey stations and planning over 20 stations in total during the expedition [1] Group 1: Ocean Operations - The "Snow Dragon" is engaged in various tasks including the deployment of temperature, salinity, and depth instruments, as well as krill and mid-water fish trawling [1] - The successful recovery of a biological buoy deployed during the 41st Antarctic Expedition demonstrates the expedition's capabilities in polar research [10] Group 2: Buoy Recovery Process - The recovery of the buoy involved navigating to a location 4 kilometers from its coordinates, where a cable was deployed to release the buoy from its anchor [2][4] - After multiple attempts, a drone successfully retrieved the buoy's cable, but the complete recovery of the buoy, which is over 3000 meters long and equipped with multiple observation devices, took over six hours [6][8] Group 3: Buoy Deployment Process - Following the recovery, a new buoy was successfully deployed in the same location, marking three consecutive years of buoy deployment by the Antarctic research team [11] - The deployment process required collective effort, with team members coordinating to manage the long cable and ensure proper placement of the buoy [13][14] Group 4: Challenges and Conditions - The deployment and recovery operations were conducted in challenging conditions, including cold temperatures and the presence of drifting ice, which required careful monitoring [16][20] - The team experienced a sense of accomplishment despite the harsh weather, as they successfully completed the buoy deployment after over two hours of outdoor work [20]

Core Viewpoint - Starbucks reported strong growth in its first quarter of fiscal year 2026, with double-digit revenue growth in the Chinese market and positive same-store sales for three consecutive quarters [1][3]. Financial Performance - In the first quarter, Starbucks China achieved a revenue of $823.4 million, marking an 11% year-over-year increase, and continued a five-quarter streak of revenue growth [3]. - Same-store sales increased by 7%, driven by a 5% rise in transaction volume and a 2% increase in average ticket size [3]. Growth Drivers - The growth in same-store transaction volume was supported by strong performance in business district stores, breakfast consumption, and robust demand in lower-tier cities [5]. - The increase in average ticket size was attributed to the strong market performance of product and food categories [5]. Store Expansion - Starbucks China continued its high-quality expansion strategy, entering 13 new county-level cities in the first quarter, bringing the total number of stores to 8,011 across 1,103 county-level cities, a 4% year-over-year increase [5][6]. - New stores consistently outperformed industry averages, with over half located in lower-tier cities or special business districts, enhancing brand penetration and market coverage [6]. Product Innovation - The introduction of the "True Taste No Sugar" product line, including the winter signature Toffee Hazelnut series, has resonated well with health-conscious consumers, attracting 1.7 million customers and setting a record for new product trials [6]. - Other new offerings, such as the Cheese Latte series and Vanilla Mocha Layer Cake, also received positive market feedback [6]. Brand Experience - Starbucks explored diverse possibilities for creating a "third space," highlighted by a collaboration with the "Harry Potter" franchise, transforming 38 themed stores into "Hogwarts Starbucks" and selling 194,000 magic wands within a week [6]. - A New Year's Eve countdown party attracted 13,000 customers, setting a record for sales on that night and strengthening emotional connections with consumers [6]. Membership and Customer Engagement - The company enhanced user engagement through partnerships with Hilton Group and China Eastern Airlines, expanding membership benefits to hotel stays [8]. - The launch of "Star Day" on the 17th of each month aims to engage members through various interactive mechanisms, with over 45,000 members participating on the first event [8]. Employee Investment - Continuous investment in partners is crucial for Starbucks' stable development, with the company receiving multiple employer brand awards, reflecting the efforts of over 70,000 partners nationwide [8]. Leadership Statement - The CEO emphasized the commitment to exceeding customer and partner expectations as a driving force for growth, highlighting the dual high growth in revenue and same-store sales for the first quarter of fiscal year 2026 [10][11].

Core Viewpoint - Tesla's annual revenue and net profit have declined for the first time, influenced by market conditions, while the company is investing approximately $2 billion in AI through xAI to strengthen its strategic positioning in the technology sector [1][3]. Financial Performance - In Q4 2025, Tesla's total revenue was $24.901 billion, a decrease of 3% from $25.707 billion in the same quarter last year [3]. - The net profit attributable to common shareholders for Q4 2025 was $840 million, down 61% from $2.128 billion year-over-year, indicating significant profit pressure [3]. - For the full year 2025, Tesla's total revenue reached $94.827 billion, a 3% decline from $97.690 billion in 2024 [3]. - The annual net profit attributable to common shareholders was $3.794 billion, a 46% decrease from $7.091 billion in 2024, reflecting overall performance pressure [3]. Strategic Investments - Tesla is continuing its strategic initiatives during this performance adjustment period by investing approximately $2 billion in xAI, which is part of a recent funding round for the AI company [3]. - This investment aims to deepen Tesla's engagement in the artificial intelligence sector, laying the groundwork for future technological innovation and business expansion [3]. Market Reaction - Despite the annual performance decline, Tesla's Q4 revenue and adjusted earnings per share exceeded market analysts' expectations, boosting investor confidence [3]. - Following the earnings report, Tesla's stock price rose over 3% in after-hours trading [3]. - On the Nasdaq, Tesla's opening price was $431.91, closing at $431.46, with a slight increase of 0.13% during regular trading [3].