Core Viewpoint - The Guangdong Olympic Sports Center has undergone a significant transformation, blending technology and art to create an immersive experience for the 15th National Games, showcasing the vibrancy of the Greater Bay Area [1][2]. Group 1: Venue Overview - The Guangdong Olympic Sports Center covers an area of 654,600 square meters with a total construction area of 154,900 square meters, accommodating approximately 75,000 spectators [1]. - Originally built for the 9th National Games in 2001, the venue has now hosted significant events for the second time, reinforcing its status as a "dual National Games venue" [1]. Group 2: Design and Aesthetics - The design features a "ribbon-like" roof with a light gray tone and dynamic lines, enhancing the visual appeal and creating a sense of movement [2]. - The innovative PTFE membrane design covers exposed steel structures, optimizing the visual effect and allowing for diverse dynamic lighting during events [2]. - The integration of modern projection technology transforms the venue into an interactive performance space, enhancing the atmosphere during events [2]. Group 3: Accessibility and User Experience - The entrance features a gently sloping ramp instead of stairs, improving accessibility for elderly and disabled individuals while providing a scenic experience [3]. - The overall color scheme of the venue is dominated by sea blue, with seating areas resembling blooming petals, creating a dynamic visual effect [3]. Group 4: Environmental Considerations - The renovation includes features to improve ventilation, reduce energy consumption, and adapt to the humid subtropical climate, such as a ventilated fitness platform and sunshade eaves [3]. - Solar photovoltaic panels and climbing plants are incorporated to further decrease energy consumption and carbon emissions [3]. Group 5: Community Integration - A key goal of the renovation is to establish the Olympic Sports Center as a "People's Sports Park," encouraging local residents and visitors to engage in physical activities post-events [4].

实验结果显示，在这些快速相变中，水会经历此前未被发现的过渡结构，并最终形成一种全新的冰相， 即冰XXI。这种新冰具有异常庞大而复杂的晶胞结构，其晶格单元呈扁平矩形，形态独特，与此前所有 已知冰相显著不同。 韩国标准科学研究院研究团队首次在室温、超高压（超过2吉帕）条件下，观测到水在百万分之一秒 （微秒）内经历的多重冻结与融化过程，并据此发现了人类已知的第21种冰相，命名为"冰XXI"。这一 成果揭示了此前从未发现的水结晶路径，为理解水在极端环境中的结构变化提供了新视角。相关论文发 表于新一期《自然·材料》杂志。 通常，水在温度降至0℃以下时会结冰。但事实上，冰也可在室温甚至高于沸点的温度下形成，因为结 晶（液体转变为固体的过程）不仅受温度影响，也受压力制约。例如在室温下，当水受到的压力超过 0.96吉帕时，就会发生相变，形成一种称为"冰Ⅵ"的晶体结构。过去一个世纪中，研究人员通过改变温 度与压力，已在实验中发现20种不同的冰相结构。然而，在0—2吉帕这一压力区间，水的相变最为复 杂，超过10种冰相密集存在，结构极为多样。 研究团队利用自主研制的动态金刚石对顶砧（dDAC），首次在室温下生成了"超压缩液态水"， ...

Core Insights - A research team from MIT has developed a new type of nano-delivery particle that significantly enhances the efficacy of mRNA vaccines, potentially reducing the cost of single-dose vaccines [1][2] - Animal trials indicate that the new nano-particle delivery system for mRNA influenza vaccines requires only 1% of the traditional vaccine dose to elicit an equivalent immune response in mice [1] - The new particles are not only applicable to influenza vaccines but also hold promise for the prevention of various infectious diseases, including COVID-19 and HIV [1] Group 1 - The new AMG1541 lipid nano-particle shows two main advantages: it significantly improves "endosomal release" efficiency, allowing for quicker release of mRNA once inside cells [1] - The design of the ester tail enables rapid degradation of the particles after fulfilling their purpose, which accelerates the clearance process in the body and reduces the risk of side effects [1] - The technology provides a new pathway for developing more precisely matched influenza vaccines for the circulating strains each year, as well as for combating major infectious diseases like HIV [2]

美国梅奥诊所与内布拉斯加大学医学中心科学家合作，开发出一款干细胞贴片，无需开胸手术也可修复 受损心脏。该贴片的设计理念体现了工程学与生物学的深度协同，使复杂的心脏组织修复变得简单可 控，为心力衰竭治疗开辟了新路径。相关成果发表于最新一期《生物材料学报》杂志。 这项技术利用成人干细胞重编程后培育出的心脏组织，仅通过小切口即可植入体内。临床前试验表明， 这种干细胞贴片能有效恢复心脏功能，提高治疗效果。团队表示，严重心力衰竭患者目前除机械泵或移 植外选择有限，最新成果有望提供一种更安全的新疗法。 心脏病发作是全球主要致死因素之一。多年来，科学家致力于用干细胞衍生的健康心肌细胞替换受损组 织。早期研究虽展现潜力，但需实施开胸手术，对多数重症患者而言风险过高。科学家通过将皮肤或血 细胞等成体细胞重编程为诱导多能干细胞，进而培育为替代性心脏细胞。但如何安全、高效地递送这类 工程心脏组织，始终是重大挑战。 临床前模型验证显示，与传统方法相比，这种微创植入显著改善了心脏功能，减少瘢痕形成，促进血管 生长，减轻炎症反应，并激发心脏自我修复。 【总编辑圈点】 这款干细胞贴片最大意义不仅在于避免了高风险开胸手术，更在于将再生医学与 ...

数据显示，树龄在500年及以上（一级保护）的古柏占总数的2.3%，树龄300年至499年（二级保 护）的占13.8%，树龄100年至299年（三级保护）的占比最高，达83.9%。其中，古柏园内最大树龄为 769年，而阿子沟区域发现了目前该区域内已知的最大树龄个体，其树龄高达916年。 据了解，本次研究基于翔实数据，成功构建了林木树高与胸径、材积与树高胸径、年龄与树高胸径 等多维度生长预测模型。 这一成果意味着，未来，研究人员能通过测量树木外观等指标科学预测其树龄，可以减少甚至避免 钻取树芯对古柏造成的干扰。这也成为古柏保护技术手段的一项重要创新。 通过对采集的树芯及圆盘样本进行科学鉴定分析，调查团队清晰掌握了两大区域古柏群落的年龄结 构。 记者近日从青海省海西蒙古族藏族自治州获悉，该州德令哈市林业和草原局近日完成了柏树山地区 祁连圆柏古柏群落的专项科学调查工作，发现了当地目前已知的最大树龄个体。 德令哈市位于柴达木盆地，本次调查聚焦该市柏树山地区千年古柏园和蓄集乡阿子沟两大重点区 域，采用外业实地勘察与内业样本分析相结合的方式有序推进。 ...

Core Insights - The Massachusetts Institute of Technology (MIT) physicists have observed key evidence of unconventional superconductivity in twisted trilayer graphene (MATTG), which is a significant step towards achieving room-temperature superconductivity [1][2] - Room-temperature superconductivity could enable technologies such as zero-energy transmission cables, efficient power grids, and practical quantum computing systems [1] - MATTG exhibits unique quantum properties due to its specific twisting angle, leading to the emergence of a new research field known as "twisted electronics" [1] Summary by Sections - **Unconventional Superconductivity**: The direct observation of superconducting energy gaps and zero-resistance characteristics in MATTG indicates that its electron pairing mechanism differs from traditional superconductors, suggesting a new superconducting mechanism [1][2] - **Experimental Methodology**: A newly developed experimental platform combined electron tunneling measurements with electrical transport tests, allowing simultaneous observation of superconducting energy gaps and zero-resistance states [1] - **Future Research Directions**: The research team plans to explore more twisted structures and materials using the new platform, aiming to uncover the nature of electron pairing and quantum state competition, which could lead to the design of new efficient superconductors and quantum computing materials [2]

Core Insights - The research from MIT physicists provides crucial evidence for unconventional superconductivity in twisted trilayer graphene (MATTG), advancing the goal of achieving room-temperature superconductivity [1][2] - Room-temperature superconductivity could lead to innovations such as zero-energy transmission cables, efficient power grids, and practical quantum computing systems [1] Group 1: Research Findings - MATTG exhibits unique quantum properties due to its specific twisting angle, which has led to the emergence of a new research field known as "twisted electronics" [1] - The recent experiments combined electron tunneling measurements with electrical transport tests, revealing a superconducting energy gap only when the material is in a zero-resistance state [1] - Further temperature and magnetic field tests indicated a distinct "V"-shaped curve for the energy gap in MATTG, contrasting with the smooth, symmetric shape typically seen in conventional superconductors [2] Group 2: Implications for Future Research - The findings suggest that the electron pairing mechanism in MATTG differs fundamentally from traditional superconductors, potentially due to strong electron interactions rather than lattice vibrations [2] - The new experimental platform allows real-time observation of the formation and evolution of superconducting energy gaps in two-dimensional materials, providing a novel method for studying electron pairing mechanisms [2] - Future research will explore more twisted structures and materials, aiming to uncover the essence of electron pairing and quantum state competition, which could inform the design of new efficient superconductors and quantum computing materials [2]

Core Viewpoint - The recent emergence of the H3N2 influenza virus has led to increased public concern, with symptoms reported to be more severe than those of a common cold, as indicated by the China CDC's report showing over 90% of positive samples being H3N2 [1] Group 1: Differentiating Between Common Cold and Influenza - Influenza symptoms typically appear suddenly, including high fever, headache, sore throat, cough, significant fatigue, and muscle aches, while common cold symptoms develop more gradually and are generally milder [2] - High fever (above 39°C) lasting 3-5 days is common in influenza, whereas common cold fever is usually below 38°C and resolves within 1-2 days [2] - Early identification of symptoms is crucial for appropriate treatment and resource management [2] Group 2: Recovery Timeline and Potential Aftereffects - Antiviral treatment is most effective when administered within 48 hours of symptom onset, with medications like Oseltamivir and Marbofloxacin recommended [3] - Influenza itself does not typically leave aftereffects, but delayed treatment can lead to serious complications such as pneumonia or myocarditis, which may have long-term health impacts [3] - Healthy adults usually recover from typical influenza symptoms within a week, but some may experience lingering cough and fatigue for up to two weeks [3] Group 3: Preventive Measures for H3N2 Influenza - Vaccination is strongly recommended as the most effective and economical preventive measure against influenza [4][5] - The composition of the flu vaccine is adjusted annually to match circulating strains, enhancing its effectiveness [5] - Public health recommendations include wearing masks in high-risk areas and isolating when symptomatic to prevent the spread of the virus [5]

Core Insights - The research published in "Nature" presents a database of over 10,000 human images aimed at assessing and correcting biases in AI models within the visual domain, marking a significant step towards more trustworthy AI [1][4] - The "Fair Human-Centric Image Benchmark" (FHIBE) was developed by Sony AI, utilizing ethically sourced data with user consent, which allows for precise evaluation of human-centered computer vision tasks [1][4] Group 1 - FHIBE includes 10,318 images from 1,981 individuals across 81 countries and regions, with comprehensive annotations on demographic and physiological characteristics such as age, pronoun category, ancestry, hair color, and skin color [1][2] - The dataset adheres to best practices in consent mechanisms, diversity, and privacy, making it a reliable resource for assessing AI biases [1][2] - The research team compared FHIBE with 27 existing human-centric computer vision datasets, finding that FHIBE has higher standards for diversity and reliable consent, effectively reducing biases [2] Group 2 - The creation of the dataset is acknowledged to be challenging and costly, indicating potential barriers to widespread adoption [3] - The study represents a benchmark in AI ethics, transforming the abstract principle of "fairness" into actionable and verifiable technical standards and workflows [4] - This exploration is seen as crucial for shifting AI development from merely enhancing performance to becoming a trustworthy partner for humanity [4]

Core Viewpoint - Researchers at the Kant Baltic Federal University have developed a new composite material for repairing damaged bones, which accelerates bone graft recovery and improves patient quality of life [1] Group 1: Material Development - The composite material is designed to closely mimic the properties of human bone, addressing a significant challenge in medical research [1] - The material is based on biocompatible polymer polyether ether ketone, with the addition of 0.1% and 1% hydroxyapatite, forming a 2.5D scaffold composite [1] - This polymer is widely used in craniofacial and spinal segment surgeries, offering mechanical properties that are closer to bone tissue compared to metals [1] Group 2: Biological and Mechanical Properties - The 2.5D scaffold made from this composite material allows for the effective infiltration of active components into the regenerated bone tissue, enhancing its biological activity and regenerative capacity [1] - The incorporation of hydroxyapatite improves strength and cell viability, although a 1% concentration results in a reduced relative elongation [1] - The mechanical and biological properties of this composite material facilitate easy implantation into bone defect sites for reconstruction [1]