5月28日，330千伏玛尔挡水电站2号机组圆满完成人工短路扰动试验，这是我国首次容量最大、电压等级最高、调相能力最强的水电机组压水调相试验，标 志着我国在高海拔大型水电机组压水调相运行技术领域取得重大突破，多项技术指标达到国际领先水平。 压水调相是一种电力系统调节技术，指水轮发电机组在调相运行过程中，通过注入压缩空气将转轮室内的水位压至转轮以下，以减少旋转阻力并高效提供无 功功率，其主要作用是通过快速调整无功功率来维持电网电压稳定。该技术相较于其他方式，拥有操作简单、切换方便、节约发电用水、经济性优良等显著 优势。此次玛尔挡水电站2号机组的压水调相改造工程，是国家电网有限公司首次提出该技术在大容量水电机组应用的具体实践。 责任编辑：沈馨蕊 330千伏玛尔挡水电站2号机组压水调相人工短路扰动试验现场。卫洁 摄 国网青海省电力公司联合国家能源集团青海分公司等多家单位共同完成技术攻关与试验。试验团队通过调相性能验证试验、模式切换、稳态失磁等9项关键 测试，首次在高海拔环境下获取了大型水电机组调相运行的完整性能参数。数据显示，该机组在进相深度、工况转换时长、提升系统电压稳定性能等方面表 现优异，为大容量水电站、抽蓄电 ...

Group 1 - The significance of May 30 as the National Science Workers' Day highlights the contributions of countless technology workers in advancing China's scientific journey [1] - Major achievements in Chinese technology include the Chang'e 6 mission, which successfully collected samples from the moon's far side, and the launch of the "Dream" vessel, which has a maximum drilling depth capability of 11,000 meters [2][3] - The successful development of the Chang'e 6 mission involved overcoming unprecedented challenges in lunar sampling, marking a significant milestone in China's space exploration efforts [3] Group 2 - Research on lunar soil has led to the publication of over 100 scientific papers, showcasing the ongoing scientific inquiry in this area [4] - The "Dream" vessel's success is attributed to the collaborative efforts of over 150 research and testing units and more than 3,000 builders [5] - The C919 aircraft, developed over 16 years, has expanded its operational routes to cover 16 cities in China and initiated international routes [6] Group 3 - The growth of technology talent in China is supported by a robust policy framework and innovation ecosystem, with over 120 million technology professionals, the highest in the world [9][10] - Recent initiatives include the "Youth Talent Support Project" aimed at nurturing top-tier scientific talent and reforms in talent evaluation to focus on research outcomes rather than publication quantity [9][10] - The emphasis on scientific integrity and ethical guidelines is fostering a positive research environment, contributing to the development of a well-structured and high-quality technology talent pool [10] Group 4 - The commitment to technological innovation is underscored by the belief that science and technology will lead the way in China's modernization efforts, with a focus on emerging industries and high-quality development [11] - Companies like Star Ring Energy are making strides in controlled nuclear fusion, aiming to break the long-standing barriers in this field [12] - The emergence of companies like Weijing Energy is focused on overcoming technical and cost challenges in long-duration energy storage, aiming to make renewable energy more accessible and reliable [12]

在日前举行的中国农业农村低碳发展报告发布会暨第十八届农业环境学术研讨会上，中国农业科学 院农业环境与可持续发展研究所所长赵立欣介绍，我国首个农产品碳足迹因子基准数据库启动建设3年 来，已完成小麦、玉米、水稻、苹果、柑橘、花生、蔬菜、甘蔗等农产品的碳足迹因子数据集构建，绘 制了农产品碳足迹因子空间特征图谱，形成了基于省级行政区的农产品碳足迹排放基准。 据悉，数据库覆盖三大主粮、大宗经济作物等八大品类农产品，包含29个省级行政区3.8万条数 据。"历经3年攻关，数据库已能精准解析农产品碳足迹在时间序列和省级尺度上的变化特征。"赵立欣 说。 赵立欣介绍，数据库的搭建严格遵循联合国政府间气候变化专门委员会清单指南方法和全生命周期 碳足迹核算框架，创造性构建起"种植—加工—包装"全生命周期三级核算体系，整合肥料施用、农药使 用、地膜覆盖、灌溉能耗及机械耕作五大关键排放源，进行精准计量。同时，数据库确定以"单位质量 农产品碳足迹"为功能单位，划定"从摇篮到出厂门"的系统边界，设定1%取舍准则，建立了标准化的核 算流程。 数据库项目组代表、中国农业科学院农业环境与可持续发展研究所智慧气象团队首席科学家马欣 说，预计到202 ...

Core Insights - The research team at Tianjin University has developed a high-performance electrocatalyst for the efficient synthesis of green hydrogen peroxide (H2O2), aiming for an "on-demand" production model [1][2] - The global demand for hydrogen peroxide is projected to reach 6 million tons by 2024, with 95% of current production relying on the energy-intensive anthraquinone process, which poses safety and environmental risks [1] Group 1: Research Breakthrough - The team designed a nickel-based metal-organic framework material (Ni-BTA) that utilizes unique interlayer hydrogen bonding to enhance catalytic activity for H2O2 synthesis [1][2] - This innovative "non-coordinative structural regulation" strategy allows for precise control over catalytic reactions, differing from traditional catalysts that rely on metal center electronic structures [2] Group 2: Performance and Applications - The new catalyst demonstrates significantly higher H2O2 production rates in neutral and alkaline environments compared to similar products, achieving a concentration of 1% in artificial seawater and 3% in alkaline solutions [2] - The catalyst can effectively eliminate 100% of pathogenic bacteria, such as E. coli, in physiological saline within 30 minutes and rapidly degrade toxic organic dyes, meeting practical standards for pollution degradation and disinfection [2] Group 3: Future Prospects - The research team is accelerating the industrialization process of this technology, aiming to replace traditional high-pollution methods and provide a "green" solution for medical disinfection and wastewater treatment [2]

Core Viewpoint - Vascular tumors, while common and mostly benign, can pose significant health risks if located in deeper tissues or organs, necessitating increased awareness and vigilance among parents and healthcare providers [1][4]. Group 1: Prevalence and Detection - Vascular tumors account for approximately 7% of soft tissue tumors, with an incidence rate of 1%-3% in the general population [2]. - The two peak age groups for vascular tumor occurrence are children under 6 years and adults aged 30 to 50, with a 4%-10% incidence in infants and a 30% incidence in premature infants [2]. - Certain vascular tumors are visible to the naked eye due to their superficial location, particularly in infants, where they may appear as red spots or raised lesions [2][3]. Group 2: Diagnostic Methods - A method using a flashlight can help identify vascular tumors, as the light penetration differs between normal skin and tumor tissue, achieving a detection rate of 78% for tumors thicker than 3mm [2][3]. - However, this method is not applicable for deeper tumors located in internal organs, which require ultrasound or imaging techniques for diagnosis [3]. Group 3: Risks and Complications - Vascular tumors can lead to serious complications depending on their type, size, and location, with some potentially causing significant health issues such as jaundice or life-threatening brain hemorrhages [4]. - High-risk areas for vascular tumors include the head, neck, and groin, where untreated tumors can severely affect appearance and function [5]. Group 4: Early Detection and Intervention - Early detection is crucial, especially in infants, as vascular tumors can grow rapidly within the first few weeks of life [7]. - Parents are advised to monitor for multiple lesions and seek ultrasound examinations to rule out internal complications [7]. - Adults may experience subtle symptoms, such as abdominal pain or discomfort, indicating the need for medical attention [7]. Group 5: Management and Care - Upon diagnosis, care for superficial vascular tumors includes avoiding friction and pressure to prevent complications [8]. - Regular monitoring of the tumor's characteristics is essential, and protective measures such as sun avoidance and gentle clothing are recommended [8].

Group 1 - The core viewpoint is that the Chinese government is promoting the establishment of child-friendly hospitals, aiming for 2,000 medical institutions to meet these standards by the end of 2025 [1] - Recent data shows that child health levels in China have improved, with infant mortality and under-five mortality rates projected to reach historical lows of 4.0‰ and 5.6‰ respectively by 2024 [1] - The National Health Commission is addressing the shortage of pediatric services by enhancing pediatric care in county hospitals and promoting the establishment of national children's medical centers [1] Group 2 - Concerns remain regarding the rising obesity rates among children aged 6-17, which can lead to long-term health issues such as cardiovascular diseases and diabetes [2] - Recommendations for preventing childhood obesity include maintaining a balanced diet and ensuring at least 60 minutes of physical activity daily for school-aged children [2] - The National Health Commission is focusing on myopia prevention and treatment, with new guidelines and standards for eye care services being implemented [2] Group 3 - The application of new technologies and products is enhancing children's health services, such as the establishment of a digital platform for monitoring neuropsychological development in Zhejiang [3] - Vaccination initiatives, including the HPV vaccine, are being expanded, with free vaccination policies covering 60% of eligible girls nationwide [3]

Group 1 - The core viewpoint of the articles revolves around the challenges and implications of using "AI rate" as a criterion for evaluating academic papers, highlighting the potential for misjudgment and the limitations of AI detection systems [1][2][3] - Several universities have implemented regulations linking the proportion of AI-generated content in graduation theses to their acceptance, aiming to prevent academic misconduct [1] - The detection systems analyze text features such as vocabulary frequency, sentence structure, and logical expression to determine similarity with AI-generated content, but this approach is flawed due to the inherent similarities between AI-generated and human-written academic texts [1][2] Group 2 - Controversies surrounding "AI rate" detection reflect the broader challenges faced by education in the era of technological transformation, where reliance on AI detection may lead to superficial modifications in original works [2] - Academic committees are deemed the ultimate authority in evaluating the authenticity of student work, as educators possess a deeper understanding of students' capabilities and research processes [2] - The focus should be on fostering independent thinking and innovative ideas in students rather than merely producing texts that pass AI detection [3]

原标题：两部门印发《通知》有序推动绿电直连发展 科技日报讯 （记者刘园园）为探索创新新能源生产和消费融合发展模式，促进新能源就近就地消纳， 更好满足企业绿色用能需求，5月30日，由国家发展改革委、国家能源局联合印发的《关于有序推动绿 电直连发展有关事项的通知》（以下简称《通知》）正式发布。 谈及《通知》出台背景，该负责同志提到，近年来，随着我国新能源跃升式发展，新能源消纳压力逐年 递增。在远距离输送的同时，通过绿电直连项目等探索新能源生产和消费集成发展模式，可挖掘就近就 地消纳需求，拓展新能源应用场景，提高新能源资源利用效率。 《通知》提出，绿电直连项目以满足企业绿色用能需求、提升新能源就近就地消纳水平为目标。为规范 项目建设，《通知》要求，新增负荷可配套建设新能源项目。存量负荷在已有燃煤燃气自备电厂足额清 缴可再生能源发展基金的前提下开展绿电直连，通过压减自备电厂出力，实现清洁能源替代。有降碳刚 性需求的出口外向型企业利用周边新能源资源探索开展存量负荷绿电直连。《通知》明确，包括民营企 业在内的各类经营主体（不含电网企业）可投资绿电直连项目。 "《通知》始终坚持以绿为底色，多措并举提高绿电直连项目对新能源消 ...

Core Viewpoint - The article discusses the increase in patients presenting with "small blisters" on hands and feet during the summer, primarily caused by various skin conditions, with a focus on sweat eczema as the most common cause [1][2]. Group 1: Common Conditions - The most common condition leading to "small blisters" is sweat eczema, characterized by small blisters on the palms and soles, often accompanied by severe itching [2][3]. - Other potential causes include athlete's foot, hand-foot eczema, contact dermatitis, and hand-foot-mouth disease, each with distinct characteristics and treatment approaches [3][4]. Group 2: Symptoms and Diagnosis - Patients typically experience blisters on the sides of fingers, palms, and soles, with symptoms worsening at night or with heat, leading to potential secondary infections if scratched [2][3]. - Sweat eczema is noted for its self-limiting nature, often exacerbating in summer and improving in fall and winter, with recurrent episodes leading to skin thickening and cracking [2][3]. Group 3: Treatment Approaches - Treatment for sweat eczema focuses on symptomatic relief, with options like calamine lotion for itching and topical corticosteroids for severe cases [6]. - Athlete's foot requires maintaining dry skin and may involve antifungal medications, with an emphasis on completing the full treatment course to prevent recurrence [6]. - Hand-foot eczema treatment involves avoiding irritants and may include wet dressings during acute phases, transitioning to topical corticosteroids as the condition stabilizes [6]. - Contact dermatitis treatment emphasizes identifying and removing the irritant, followed by appropriate topical or oral medications as needed [6][7].

Core Insights - The research team from the Chinese Academy of Sciences has discovered that insects can cleverly utilize circadian rhythm genes to regulate their seasonal rhythms, enabling adaptation to different habitats and climates [1][2]. Group 1: Research Findings - The study focuses on the Lepidoptera order of insects, which includes moths and butterflies, and identifies the biological clock gene Cycle as a key molecular "switch" controlling diapause in silkworms [1]. - The Cycle gene in silkworms and Lepidoptera insects encodes three subtypes, with some responsible for circadian regulation and others for diapause control, achieving dual regulation of circadian and seasonal rhythms [1][2]. - Tropical silkworms have lost the subtype that regulates diapause due to genetic mutations, resulting in an inability to undergo diapause [1]. Group 2: Implications - The research provides a theoretical basis for understanding the seasonal occurrence patterns of pest insects, particularly in the context of global climate change, which may affect population dynamics [2].