Core Insights - The article discusses a pioneering clinical study at the Army Medical University’s Xinqiao Hospital, focusing on the use of Vagus Nerve Stimulation (VNS) to treat upper limb motor dysfunction in chronic ischemic stroke patients [1][2] - The study aims to provide new treatment pathways for stroke patients suffering from upper limb functional impairments, which are a significant cause of disability in China [1] Group 1: Treatment Mechanism - VNS involves implanting a miniature stimulator in the neck of stroke patients to activate the vagus nerve, enhancing brain plasticity and rebuilding damaged motor pathways [1] - The mechanism of VNS treatment includes activating the brainstem nucleus and promoting the release of neurotransmitters like acetylcholine and norepinephrine, which are crucial for motor function recovery [1] Group 2: Clinical Study Results - Eleven stroke patients have been enrolled in the study, with seven completing the main treatment phase [2] - The average improvement in upper limb motor function scores was 11.7 points, representing a 37.9% enhancement compared to pre-treatment levels [2] - Other significant improvements included a 121.7% increase in stroke impact scale scores, a 26.2% enhancement in daily living activity scores, and a 10.6-point increase in overall recovery ratings [2]

刘志芬介绍，"情绪中暑"是由高温天气引发的心理及行为异常现象。其典型表现包括：易因琐事发 火、精神萎靡不振、对周遭事物深感不满、坐立难安及睡眠质量下降等。 刘志芬建议，大家在保证规律作息、健康饮食、适度运动的基础上，尝试理解和接纳自己的情绪。 同时，也可以选择一个安静的环境，以一个舒服的姿势坐下或者平躺，使用"4—7—8呼吸法"：吸气4 秒，想象吸入清凉空气；屏气7秒，想象凉意在体内扩散；呼气8秒，想象呼出燥热与烦躁，上述步骤重 复5次。这样可以激活身体的副交感神经，缓解因炎热带来的烦躁感。 另一方面，剧烈运动或长时间高温作业时，人体汗液分泌增多，不仅身体会流失水分，而且体内 钾、钠等元素也会随之流失，继而使人感到浑身没劲、提不起精神、头晕恶心，这些不适会使人更容易 出现情绪波动等问题。 虽然今年的"三伏天"已近尾声，但不少地区的高温态势仍然明显。"情绪中暑"等话题近期在社交媒 体上引发讨论。什么是"情绪中暑"？如何有效缓解？科技日报记者就此采访了山西医科大第一医院精神 卫生科主任刘志芬。 一般来说，引发"情绪中暑"的原因可能有长时间暴露在高温、高湿或炎热环境中，人体体温调节中 枢——下丘脑出现功能紊乱，从而 ...

科技日报讯 （记者陈曦 通讯员赵晖）记者8月13日从天津大学获悉，该校王汉杰、刘夺团队与西北 农林科技大学杜涛峰团队合作，成功构建"可吞服光电子胶囊—工程菌双向交流系统"，为肠道健康监测 与疾病治疗开辟了新路径。相关研究成果发表在国际期刊《自然·微生物学》上。 据介绍，肠道内栖息着数以亿计的微生物，其组成和活动与人体健康密切相关。但由于肠道环境复 杂，传统检测和调控手段难以精准捕捉菌群的实时状态。此次研究团队研发的可吞服光电子胶囊，如 同"智能潜水艇"深入肠道，可通过光学信号实现与工程菌的双向交流。 该成果为肠道微生物研究提供了全新工具，未来结合人工智能和云技术，有望实现对肠道健康的动 态监测与精准调控，为肠炎等疾病的治疗开辟新途径。 在猪肠炎模型实验中，该系统能比传统检测方法提前1—2天捕捉到肠炎信号，且通过远程调控工程 菌可有效缓解炎症。这项技术构建了新型"菌—机接口"，为实现"人—机—菌交互"、推动智能化疾病诊 疗奠定了基础。 处于炎症状态的肠道细胞会产生异常高浓度的一氧化氮，并在肠道中很快转化为硝酸根，因此硝酸 根可以作为一种肠炎标志物。研究团队改造工程菌使其一旦"感受"到硝酸根便会发光，胶囊的光电传 ...

Core Insights - The concept of "Green Mountains and Clear Water are as Valuable as Mountains of Gold and Silver" has gained significant traction over the past 20 years, particularly since the 18th National Congress of the Communist Party of China, leading to a historic transformation in ecological civilization construction [1][2] - Technological innovation has played a crucial catalytic role in the transition from traditional growth models to innovation-driven green development, enhancing both environmental protection and economic efficiency [1][2] Group 1 - The application of various green technologies in agriculture and industry has addressed environmental issues while generating economic benefits through cost reduction and product upgrades [1][2] - The renewable energy sector, particularly solar power, has seen significant growth, with installed capacity surpassing 1 billion kilowatts, contributing to a complete and internationally competitive solar industry chain [1][2] Group 2 - The value of ecological assets has become measurable and tradable, exemplified by the carbon emissions trading market, which has achieved a cumulative transaction volume exceeding 47 billion yuan over four years [2] - The integration of technology in ecological product production, assessment, and trading is promoting a deep fusion of economic activities and ecological protection [2] - Despite advancements, challenges remain in green technology innovation, necessitating a focus on industrial green transformation and ecological value conversion [2]

Core Viewpoint - The recent case of an 11-year-old boy diagnosed with Toxic Epidermal Necrolysis (TEN) after improper medication highlights the urgent need for improved safety in pediatric medication practices [1][2]. Group 1: TEN and Its Risks - TEN is a rare but severe drug-induced skin reaction with a mortality rate ranging from 14.8% to 30% [2]. - Symptoms of TEN progress in stages, starting with fever and fatigue, followed by skin lesions and potential multi-organ involvement [2]. - Children are at higher risk for TEN due to their immature immune systems and skin barriers, with 40% experiencing liver damage and 75% facing eye injuries [2][3]. Group 2: Medication Safety and Guidelines - Medications account for over 90% of TEN cases, with Nimesulide being a common trigger for children, leading to liver damage and immune reactions [3]. - Parents are advised to avoid self-medicating with unclear compound drugs and to use acetaminophen or ibuprofen under specific conditions [3][4]. - The use of certain medications like aspirin and dipyrone is discouraged due to severe side effects, and combination cold medications should be approached with caution [4]. Group 3: Challenges in Pediatric Medication - As of the end of 2023, only 3.2% of marketed drugs are specifically for children, with over 40% of pediatric drug labels lacking dosage information [5]. - There are ongoing issues with the availability of suitable pediatric formulations and the need for more clinical trials [5][6]. Group 4: Policy and Future Directions - The government has initiated policies to encourage the development of pediatric drugs and improve medication management [6][7]. - Local initiatives aim to enhance the quality and availability of children's medications, including prioritizing pediatric formulations in insurance coverage [6][7].

"信息技术与生物技术的融合，正推动种业进入'智能设计育种4.0'时代。"中国工程院院士、北京农 林科学院赵春江在报告中指出，虽然当前数字技术在生物育种应用中仍面临数据质量不高、田间信息获 取成本高、国际数据共享受限等挑战，但随着技术突破，大数据将全面渗透育种全流程，推动"经验育 种"向"精确育种"转型；人工智能—机器学习将成为多组学信息解析的新工具，显著提升育种精准性； 智能化装备则将广泛应用于智能育种各环节。 不仅是育种，在农业其他领域，人工智能与大数据技术同样发挥关键作用。中国工程院院士、宁波 大学研究员陈剑平表示，传统植保技术存在精准度不足、人力成本高、环境影响大等局限，而"智慧植 保"通过传感器与数据分析可实现病虫害精确诊断和预测，通过自动化装备可减少人工操作，通过低毒 高效技术可减少农药的使用，推动植保向"全流程智能化、全方位精准化、可持续绿色化"升级。 技术突破还延伸至农药设计领域。中国工程院院士、贵州大学校长宋宝安介绍，其团队构建的具有 自主知识产权的高效分子设计平台，已助力创制20余种国产新农药。"2012年至2024年，全球批准的20 余个除草剂新品种创制工作，超半数由该平台引领。"宋宝安说 ...

Group 1 - The core viewpoint of the article highlights the revolutionary development of the world's first phased array CT, which enables doctors to observe lung nodules smaller than 2mm and accurately distinguish between benign and malignant nodules, thus avoiding unnecessary surgeries and excessive medical interventions [1] - The phased array CT technology represents a significant leap in CT technology, with all core components developed and fully localized by Beijing Nanwei Jing Technology Co., Ltd. [1][5] - The phased array CT's optical rotation mode disrupts the traditional mechanical rotation model, allowing for a significant increase in scanning speed and image quality [2][3] Group 2 - The phased array CT can produce ultra-high-definition medical images with a pixel resolution of 3072×3072, enhancing spatial resolution by 64 times and temporal resolution by 3 times compared to traditional spiral CT [2][3] - Nanwei Jing has developed key technologies such as photon flow detectors and distributed X-ray source arrays, overcoming the limitations of traditional CT detectors that relied on imports [3][4] - The successful development of the phased array CT marks a historic transition for China's high-end medical equipment industry from being a technology follower to a leader in the CT technology field [5]

Core Insights - A research team from Cornell University has developed a low-power microchip known as the "microwave brain," which is the first processor capable of simultaneously processing ultra-fast data signals and wireless communication signals using microwave physics principles [1][2] - The chip operates at a power consumption of less than 200 milliwatts and can perform real-time frequency domain calculations, making it suitable for tasks such as radio signal decoding, radar target tracking, and high-speed digital data processing [1] - The chip's architecture is inspired by neural networks, allowing it to recognize patterns and learn from data, and it operates in an analog manner at microwave frequencies, processing signals directly without the need for extensive signal preprocessing [1][2] Technical Features - The chip can perform both basic logical operations and complex tasks, achieving over 88% accuracy in various wireless signal classification tasks, comparable to traditional digital neural networks but with significantly lower power consumption and space requirements [2] - Unlike traditional digital systems, which require increased circuit size, power, and error correction mechanisms as task complexity rises, this new method maintains high accuracy in both simple and complex tasks without increasing system overhead [2]

Core Insights - Scientists have achieved a significant breakthrough in brain-computer interface technology by decoding "inner speech" brain activity with an accuracy of 74%, opening new avenues for helping patients with severe speech impairments to communicate naturally [1][2]. Group 1: Research Findings - The research team implanted microelectrodes in the motor cortex of participants suffering from severe paralysis due to amyotrophic lateral sclerosis or brainstem strokes [2]. - It was found that both attempting to speak and imagining speech activate overlapping areas of the brain, producing similar neural activity patterns, although the signal strength of "inner speech" is generally weaker [2]. - The team trained an AI model using data collected from "inner speech," enabling the brain-computer interface system to decode imagined sentences from a vocabulary of up to 125,000 words with a 74% accuracy rate [2]. Group 2: Communication Mechanism - The research team demonstrated a password control mechanism that allows the system to temporarily ignore "inner speech" and switch to a keyword password unlocking mode, achieving over 98% accuracy in recognizing and activating the decoding function when users silently think of specific phrases [2]. - Although the technology is not yet perfect in processing "inner speech," advancements in sensors and algorithms are expected to lead to more sophisticated devices capable of facilitating fluid communication akin to everyday conversations [2].

Core Viewpoint - The development of sixth-generation fighter jets, driven by AI technology, is reshaping future aerial combat and global strategic dynamics, with multiple countries racing to establish air superiority [1][4]. Group 1: Sixth-Generation Fighter Jet Development - The U.S. government has selected Boeing to produce the "Next Generation Air Dominance" fighter, which is touted to be the most advanced and lethal aircraft ever [1]. - Countries like the UK, Italy, and Japan are collaborating on the "Tempest" project, aiming for its first flight by 2035, while France, Germany, and Spain are leading the "Future Combat Air System" expected to be deployed by 2040 [1][4]. - The sixth-generation fighter jets will redefine aerial combat rules and significantly alter the global strategic landscape [1]. Group 2: Technological Advancements - The sixth-generation fighter jets will feature a significant increase in size compared to current fifth-generation jets, driven by the need for enhanced stealth capabilities and internal weapon storage [2]. - Key competitive advantages of sixth-generation jets will include supersonic cruise capability, omnidirectional stealth, and extended operational range, with the "Tempest" expected to carry twice the weapon load of the F-35 [2][3]. Group 3: AI Integration and Cloud Warfare - Sixth-generation jets are described as "flying supercomputers," capable of processing vast amounts of data in real-time and sharing information across military units via satellite data links [3]. - The integration of AI systems is a hallmark of sixth-generation fighters, promising to enhance overall efficiency and reshape future aerial combat through a "cloud warfare" model [3]. Group 4: Global Competition and Strategic Goals - The U.S. has officially named its sixth-generation fighter as the F-47, which emphasizes modular design, directed energy weapon integration, advanced stealth, and AI-assisted operations, with an expected service entry by 2030 [4]. - In Europe, the FCAS aims to combine manned and unmanned systems for a new air superiority paradigm, with deployment expected by 2040 [4]. - Russia's MiG-41 is projected to achieve speeds of 4-5 Mach and is expected to enter service by 2028 [5]. Group 5: Challenges in Development - The development of sixth-generation fighters requires the integration of multiple advanced technologies, including AI and stealth, into a multi-domain combat platform [6][7]. - A significant challenge is the development of robust AI systems for autonomous combat decision-making, with debates ongoing about the necessity of retaining a pilot's cockpit [7]. - Balancing performance with cost is critical, as projects like the F-47 may exceed initial contracts of $20 billion, with total costs potentially reaching hundreds of billions [7].