Core Insights - The successful development of the "Large-span Space Structure Wind-Rain-Heat-Snow Comprehensive Simulation Test System" marks a significant advancement in China's ice and snow engineering research, entering a new era of comprehensive factor coupling [1][2] Group 1: Research and Development - The new system provides the world's first experimental platform to reveal the evolution mechanism of snow accumulation on roofs under the coupling effects of wind, rain, heat, and snow [1] - The system is designed to simulate extreme weather conditions, allowing for real-time monitoring and testing of snow load on large-span structures [2] Group 2: Technological Features - The system compresses the time and space scales of natural climate, enabling the simulation of the entire snow accumulation and melting process on building roofs [2] - It integrates multiple subsystems to recreate the periodic changes of snow accumulation, drifting, melting, crystallization, and re-accumulation, providing accurate data for snow load research on large roofs [2]

Core Viewpoint - The successful development of China's first lunar regolith brick-making machine marks a significant step towards utilizing lunar soil for construction on the Moon, potentially enabling the creation of lunar habitats. Group 1: Development Stages of the Lunar Regolith Brick-Making Machine - The research and development of the lunar regolith brick-making machine took approximately two years, involving three key stages: concept validation, product development, and process iteration [2]. - In the concept validation stage, the research team conducted various tests on solar concentration technology, ultimately selecting Fresnel lens and film lens methods for solar concentration [2]. - During the product development phase, the team focused on efficient energy transmission and lunar regolith densification, achieving breakthroughs in energy transmission fiber technology and lunar regolith transport mechanisms [2][3]. Group 2: Characteristics of the Lunar Regolith Bricks - The lunar regolith brick-making machine operates by using a parabolic mirror to concentrate solar energy, achieving a concentration ratio of over 3000 times, which melts the lunar soil at temperatures exceeding 1300°C [4]. - The bricks produced are made from 100% in-situ lunar regolith without any additives, exhibiting high strength and density, suitable for various construction needs beyond just housing [4]. Group 3: Steps to Build Lunar Habitats - To construct habitats on the Moon, several technical challenges must be addressed, including the integration of lunar regolith bricks with rigid and flexible structural components [5]. - The process involves three main steps: advancing key technologies for brick manufacturing and structural evaluation, conducting lunar surface tests of the brick-making machine, and developing pressure-resistant modules that work in conjunction with the brick-making machine and lunar construction robots [6].

Core Insights - The "Large-Scale Salt Cavern Hydrogen Storage" project marks a significant step in China's hydrogen energy industry, addressing the need for large-scale hydrogen storage solutions [1][2] - The project aims to fill the gap in China's large-scale salt cavern hydrogen storage sector and provide practical examples to overcome technical challenges in gaseous hydrogen storage [1] - The initiative is a collaboration between China Salt Group, Tsinghua University, and several other institutions, focusing on developing a complete technology system with independent intellectual property rights for salt cavern hydrogen storage [1] Group 1 - The project officially commenced on July 25, 2023, in Changzhou, Jiangsu, and is part of a national key research and development plan [1] - The project will establish two new salt caverns, including two hydrogen injection and extraction wells and two brine injection and discharge wells, serving as a testbed for hydrogen storage performance [2] - The project is set to tackle core issues related to safety, efficiency, and cost in large-scale hydrogen storage, including geological space optimization and new material development [1][2] Group 2 - The project is expected to enhance China's strategic hydrogen storage capacity and provide essential infrastructure for the future large-scale application of hydrogen energy [2] - The project will also create a geological large-scale hydrogen storage verification platform for experimental research [1]

◎科技日报记者 代小佩 在生命科学研究领域，地衣这一特殊生物复合体，曾长期处于我国科学家的认知之外。而中国科学院院 士、著名地衣真菌学家魏江春经过半个多世纪深耕，用智慧和坚持在地衣学领域取得系列成果。 魏江春是中国地衣学科的开拓者。从零起步，他建立了亚洲最大的地衣标本室，完成了世界上第一个地 衣型真菌全基因组测序及其基本生物学分析，从中发现大量抗逆基因和"沉默基因"，并破解其激活机 制；他提出"沙漠生物地毯工程"，为治沙提供新路径。魏江春推动中国地衣学科完成了从"一人独 行"到"世界领跑"的跨越。 魏江春的科研足迹，勾勒出地衣研究在我国的发展历史，更展现出中国科学家填补学科空白、勇攀世界 高峰的精神力量。 前不久，魏江春接受了科技日报记者专访。从地衣的本质特性到其科学价值，从个人科研历程到学科发 展脉络，94岁的他娓娓道来我国地衣学科发展的历程。 白手起家建立亚洲最大地衣标本室 记者：您投身地衣研究已70余年。很多人对"地衣"并不熟悉，能否用通俗的语言介绍一下什么是地衣？ 它的科学研究价值体现在哪些方面？ 魏江春：地衣是一类特殊的生物复合体，由真菌与光合生物（如藻类）共生形成。真菌通过菌丝为藻类 提供水分、矿 ...

Core Viewpoint - The article emphasizes the importance of public awareness and education in combating viral hepatitis, highlighting common misconceptions and the need for collective action to eliminate the disease [1] Group 1: Misconceptions about Transmission - Misconception 1: Contact with hepatitis patients leads to infection. Daily interactions with hepatitis B and C patients do not pose a risk unless there is exposure to blood or bodily fluids [2][3] - Misconception 2: Hepatitis can be prevented by taking health supplements. The most effective prevention is vaccination, and reliance on supplements can be harmful to the liver [4][5][6] Group 2: Understanding Disease Progression - Misconception 3: All viral hepatitis will progress to liver cancer. Acute hepatitis A and E typically do not lead to cancer, while chronic hepatitis B and C can, but with proper treatment, many patients can avoid this outcome [7][9] - Misconception 4: Viral hepatitis is hereditary. It is a contagious disease, not genetic, although it can be transmitted from mother to child during childbirth [10][11]

Core Insights - Qinghai Province is leveraging its clean energy resources to pursue a path of green and high-quality development, becoming a leader in clean energy production in China [1][3] Group 1: Clean Energy Infrastructure - Qinghai's total installed power capacity reached 75.9 million kilowatts by June 2023, with clean energy and renewable energy accounting for 94.2% and 72.6% of the total, respectively, both ranking first in the country [1] - The province has established the first clean energy and green computing scheduling center, which connects data from 28 power generation companies and 558 renewable energy stations, enabling efficient management of dispersed power generation facilities [2] Group 2: Operational Efficiency - The scheduling center allows for unmanned operation and centralized monitoring, reducing operational personnel costs by over 40% for power generation companies [2] - The center supports real-time monitoring, remote control, and fault handling, ensuring the safe operation of the power grid [2] Group 3: Green Computing Integration - Qinghai is integrating clean energy with green computing, responding to the growing demand for computing power driven by advancements in artificial intelligence [3][4] - The province has developed a big data model for coordinated scheduling of computing power and energy, optimizing energy consumption during periods of abundant renewable energy supply [4] Group 4: Carbon Footprint Management - Green computing is being utilized for carbon footprint tracking and green low-carbon certification for export products, enhancing the international competitiveness of enterprises [5] - The scheduling center has established a carbon footprint database for export-oriented companies, providing proof of green computing usage to help them navigate global green trade barriers [5]

Core Insights - The "Fengren-2025" International Sniper Shooting Competition showcased advanced technology, including an intelligent scoring system that enhances accuracy and fairness in judging [1][2][4] - The competition is a significant platform for the People's Armed Police Force of China to conduct practical training and international military cooperation [2] Intelligent Scoring System - The intelligent scoring system measures shooting precision to the millimeter, utilizing mobile terminals and high-definition cameras to cover over 120 shooting positions across various competition venues [3][4] - This system eliminates blind spots and risks in judging, allowing for real-time display of target images and automatic aggregation of competition results [4] Live Broadcasting System - The competition featured an innovative live broadcasting system that provided a new viewing experience through multi-angle video streams and real-time coverage of the event [5][6] - Spectators enjoyed immersive experiences with first-person perspectives and detailed commentary on the competition [7] Information Storage and Replay System - The information storage and replay system ensures comprehensive backup of audio, video, and operational data throughout the competition, allowing for easy retrieval and review [8] - This system aids in resolving disputes and serves as valuable material for post-competition analysis and tactical research [9]

Group 1: Climate Change Impact on Cultural Heritage - One-sixth of the world's cultural heritage is threatened by climate change, with extreme weather and ecological imbalance causing significant damage [1] - In Shanxi, 1,783 cultural relics were affected by unusual heavy rainfall in October 2021, including 61 sections of the World Heritage site Pingyao Ancient City, which suffered structural collapses [2][3] - Long-term climate changes can gradually damage cultural relics, with a 1°C increase in global average temperature leading to a 20%-25% reduction in wood strength and a 30% increase in stone weathering rates [3][4] Group 2: Challenges in Cultural Heritage Preservation - Approximately 10% of registered protected buildings in China have gradually disappeared since the 21st century, with about 2,000 heritage buildings lost each year [4] - The shift from passive restoration to proactive maintenance is necessary for cultural heritage protection, emphasizing the need for innovative technologies and risk awareness [5][6] - There is a shortage of professionals skilled in both technology and restoration theory, which hampers preventive protection efforts [7][8] Group 3: Resilience Protection Systems - A resilience protection system is needed for ancient buildings to adapt to external shocks and environmental changes [9][10] - This system should integrate monitoring and predictive analysis capabilities, enhancing both the resilience of cultural heritage and its surrounding environment [10][11] - Establishing a comprehensive lifecycle protection system is essential for the longevity and stability of ancient buildings, requiring collaboration across various sectors and the involvement of research institutions and universities [12]

Core Viewpoint - The development of aviation in Tibet has transformed from basic manual operations to advanced smart air traffic control systems, significantly enhancing safety and efficiency in high-altitude operations [1][3][4]. Infrastructure Development - The new air traffic control tower at Lhasa Gonggar International Airport is the tallest and largest high-altitude airport tower in China, equipped with cutting-edge technology for communication, navigation, monitoring, and meteorology [1]. - The airport network in Tibet has evolved to a "1 main and 7 branches" layout, facilitating economic development and cultural exchange [1]. Technological Advancements - The air traffic control capabilities in Tibet have progressed from manual observation to automated systems, allowing for real-time tracking and monitoring of aircraft, which enhances safety and operational efficiency [3]. - The introduction of automated monitoring systems and advanced communication technologies has enabled air traffic controllers to maintain comprehensive situational awareness [3]. Meteorological Improvements - Initially, weather data relied on manual observations, limiting operations to daytime flights; however, advancements in meteorological technology have led to automated data collection and real-time weather forecasting [4]. - The establishment of a modern meteorological system has eliminated the constraints of adverse weather on flight operations, allowing for increased flight frequency and the transition from limited operations to becoming a high-altitude hub [4].

Group 1 - The research team from the University of Leicester has developed an efficient method using acoustic technology to separate materials, enabling effective recovery of fuel cells and extraction of precious metals while preventing harmful chemicals from entering the environment, thus providing a new pathway for sustainable development in clean energy [1] - Fuel cells and electrolyzers are crucial components of hydrogen energy systems, widely used in transportation such as cars, trains, and buses, with catalyst-coated membranes (CCM) containing expensive platinum group metals and fluoropolymer membranes (PFAS) that are difficult to degrade and can contaminate drinking water if not handled properly [1] - Traditional recycling methods struggle to efficiently separate PFAS membranes from CCM due to their strong adhesion, limiting the circular use of fuel cells, prompting researchers to propose an innovative recovery strategy involving organic solvent soaking followed by water ultrasonic treatment to effectively detach PFAS membranes from precious metals [1] Group 2 - The research team has further developed a continuous layered process using a custom blade-type ultrasonic generator that creates tiny bubbles under high-frequency ultrasound, which can release precious catalysts from materials within seconds at room temperature, making the process energy-efficient and environmentally friendly [2] - This innovation not only enhances recovery efficiency but also lays the foundation for large-scale industrial applications, with the potential to be utilized in the hydrogen energy industry for sustainable resource management and environmentally friendly processing, contributing to the establishment of a truly green energy system [2]