Ke Ji Ri Bao
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【科技日报】AI智慧鲸豚保护实践亮相第五届世界生物圈保护区大会
Ke Ji Ri Bao· 2025-09-26 01:25
Group 1 - The AI Smart Dolphin Protection Project, showcased by the Chinese Academy of Sciences, Wuhan Yangtze River Dolphin Protection Foundation, and Lenovo Group, highlights the achievements and advancements in the protection of the Yangtze River dolphin, along with sharing practical experiences of technology application in conservation efforts [1][2] - The population of the Yangtze River dolphin has seen a historic rebound due to supportive policies like the ten-year fishing ban and collaborative efforts from various sectors, providing a replicable model for global endangered species protection [1][2] - Lenovo Group is actively involved in the smart dolphin protection initiative, leveraging its AI, big data, and smart device capabilities to develop an intelligent monitoring platform for the Yangtze dolphin, and is exploring advanced technologies for data collection and monitoring [2][3] Group 2 - The conservation strategy for the Yangtze River dolphin includes natural protection, translocation, breeding protection, and ex-situ conservation, resulting in a stable growth of the population and contributing to global biodiversity protection efforts [2] - Lenovo Group's initiatives encompass technology empowerment, public participation, international collaboration, and technology export, aiming to enhance the effectiveness of dolphin protection through innovative solutions [2]
科学家新发现南美捕食性恐龙物种
Ke Ji Ri Bao· 2025-09-26 01:24
科技日报讯 (记者张梦然)据新一期《自然·通讯》发表的一篇论文,报道了一个最新发现的南美 捕食性恐龙物种,名为"J.casali"。该物种是兽脚类大盗龙科的成员,可追溯至7000万至6600万年前的白 垩纪晚期,是该地区的顶级捕食者。 此次,阿根廷巴塔哥尼亚地质和古生物研究所的科学家们描述了一个保存完好、部分交联的化石, 包含大部分颅骨、前后肢、肋骨和椎骨。科学家确定该标本可追溯至白垩纪晚期。根据骨骼微结构,判 断该标本为成年个体,但可能没完全成熟,死亡时可能约19岁。该恐龙体长可能约7米、重1000多公 斤。 沉积物证据显示,它曾生活在温暖潮湿的泛滥平原环境。而压着J.casali下颌的鳄鱼腿骨化石揭示了 其摄食行为,提示它可能是该地区的顶级捕食者。科学家判断,这种恐龙直到白垩纪末期才与其他非鸟 类恐龙一起灭绝。 大盗龙科是在亚洲、澳大利亚、南美发现的食肉性兽脚类恐龙,有着细长头骨以及强壮前臂和大爪 子。不过,科学家对该群体的了解十分有限,主要原因是缺乏完整化石。 ...
特色活动打造“科普盛宴”
Ke Ji Ri Bao· 2025-09-26 01:24
Group 1 - The "National Science Popularization Month" is marked by various engaging activities across the country, showcasing scientific knowledge and innovations to the public [1][2] - The event features interactive exhibits and hands-on experiences, making advanced technologies more accessible and relatable to the audience [2][3] - The activities aim to bridge the gap between scientific concepts and everyday life, enhancing public understanding of science [3][4] Group 2 - The "Marine Science Popularization Caravan" initiative aims to bring marine biology education to inland areas, fostering interest in oceanic life among youth [4][5] - The collaboration between coastal and inland regions enhances the sharing of scientific resources, expanding the reach and impact of science education [5]
硬核科技褪去“冰冷外衣”
Ke Ji Ri Bao· 2025-09-26 01:24
点燃科学火种 当硬核科技生动呈现,冷冰冰的专业知识便有了直抵人心的温度。如何实现这一神奇转化?全国科 普月中的一些实践或许能给出启示。 具化抽象概念 一线科研案例是科学普及的"最佳剧本"。9月20日,深圳理工大学计算机科学与控制工程学院助理 教授杨智荣的讲座《追捕隐形凶手的疾病侦探》,让200多名中学生体验了一场现实版悬疑推理。 "日常生活中,疾病背后的'隐形凶手'往往是病原体。"杨智荣介绍,为了追捕它们,医生和科学家 们化身"疾病侦探",围绕"谁生病、为何生病、如何防治"这三个核心问题追寻答案。 在解答核心问题时,杨智荣以伦敦宽街霍乱暴发调查、破解吸烟和肺癌的谜团、英国海军坏血病的 消除这三个历史上的经典案例展开讲述,通过"观察—假设—验证—结论"的科学逻辑,呈现出一场"福 尔摩斯式"的科学推理。 创新不止于形式,更在于如何将抽象概念做具体化表达。 在甘肃科技馆,中国科普作家协会常务理事焦国力一句"误差不超过5厘米",让歼-10战斗机空中加 油的"厘米级对接"在学生心中具象化。"这一看似简单的对接过程,需要克服气流扰动、速度差等挑 战。"他说。 创新平台建设打通了科普传播的"任督二脉"。9月12日,《知识就 ...
湛江市住建领域“质量月”活动启动
Ke Ji Ri Bao· 2025-09-26 01:18
Core Points - The "Quality Month" event in Zhanjiang's housing and urban construction sector was launched on September 19, 2025, focusing on "Strengthening Comprehensive Quality Management to Promote Quality Power Construction" [1] - The event was organized by the Zhanjiang Housing and Urban-Rural Development Bureau, with participation from over 300 attendees from various construction departments, industry associations, and key construction enterprises [1] - The Huashang Bay project, a key initiative by China State Construction Engineering Corporation (CSCEC), aims to set a benchmark for construction quality and green building practices in Zhanjiang [1] Group 1 - The event showcased innovative quality management measures and achievements through physical observation and digital interaction in areas such as safety experience, green construction, and intelligent building [2] - The project team is committed to applying advanced techniques and processes observed during the event to enhance project construction, focusing on safety, comfort, green practices, and intelligence [4]
干细胞移植逆转动物中风损伤
Ke Ji Ri Bao· 2025-09-26 01:11
Core Insights - A breakthrough in regenerative medicine has been achieved by a research team from the University of Zurich, demonstrating the ability to reverse brain damage caused by stroke through stem cell transplantation, promoting neuron regeneration and significantly restoring motor function [1][2][3] Group 1: Research Findings - The study utilized human-induced pluripotent stem cell-derived neural stem cells, which can be reprogrammed from ordinary somatic cells and have the ability to differentiate into various neural system cells [1] - In animal experiments, the team induced permanent brain damage in mice to simulate human stroke, and after one week, they precisely transplanted neural stem cells into the damaged brain area, tracking changes for five weeks using various imaging and biochemical techniques [1][2] - The transplanted stem cells successfully survived in the damaged brain area, with most differentiating into mature neurons that established functional connections with the host's existing neural network, indicating integration into the brain's operational system [2] Group 2: Broader Implications - The research revealed widespread regenerative effects, including the formation of new blood vessels in the damaged area, significant reduction in brain inflammation, and restoration of blood-brain barrier integrity, highlighting how transplanted cells activate the brain's overall "regeneration program" [2] - Collaboration with Kyoto University ensured that all stem cells were prepared without using animal-derived reagents, laying the groundwork for future safe applications in humans [2] - A critical finding was that transplantation performed one week after the stroke yielded better results, providing a valuable preparation window for clinical treatment [2][3] Group 3: Future Directions - The research opens new clinical prospects by achieving biological repair of structural brain damage rather than merely alleviating symptoms, potentially offering a treatment paradigm for other neurodegenerative diseases such as Parkinson's or spinal cord injuries [3] - The identified "one-week delayed transplantation" window enhances clinical feasibility, marking a significant step towards real-world application of the technology [3] - The team is working on developing a "safety switch" system to minimize potential risks and optimize the technology for human application, allowing for the termination of stem cell proliferation if necessary [2]
一次抽血可评估人体11个系统衰老状况
Ke Ji Ri Bao· 2025-09-26 01:11
Core Insights - A new blood testing technology called "System Age Detection Method" has been developed by researchers from Sweden's Karolinska Institute and Yale University, which can assess the aging status of 11 different physiological systems through a single blood draw, providing a more precise basis for personalized health management [1][2] Group 1: Technology Overview - The new method utilizes DNA methylation mechanisms from epigenetics to analyze specific biomarkers in the blood, such as cholesterol and blood sugar, and their association with age-related diseases in various organs [1] - A predictive model was established using health data from approximately 7,500 individuals and validated with over 8,000 blood samples, demonstrating improved accuracy in predicting specific age-related diseases compared to traditional biological age detection methods [1] Group 2: Clinical Applications - The detection technology offers targeted intervention guidance for clinical settings, allowing doctors to recommend specific measures based on the aging status of different systems, such as enhancing immune function or lifestyle adjustments for cardiovascular health [2] - This advancement signifies a shift from assessing "overall age" to "system age," providing a scientific tool for personalized anti-aging and health management strategies [2]
我国普氏野马种群从濒危走向壮大
Ke Ji Ri Bao· 2025-09-26 01:11
新疆卡拉麦里山有蹄类野生动物自然保护区(以下简称"卡山保护区")是国内最大的普氏野马保护 基地。众多专家学者四十年如一日,扎根荒漠腹地,从零开始进行科学研究,充分运用先进技术手段, 助力普氏野马种群恢复。同时,新疆加快推进普氏野马种群扩散和扩大放归试验,与甘肃、宁夏、内蒙 古等地进行跨区域合作,合力推进普氏野马保护。目前,我国普氏野马种群数量已突破900匹,占全球 总量的1/3。 科技助力种群恢复 在天山脚下的昭苏湿地公园,成群的马匹在平缓的河水中奔跑。与这些常见的家马相比,普氏野马 喜欢离群索居,在外形和基因上,二者均有区别。 新疆野马繁殖研究中心工程师薛剑楠告诉记者,普氏野马头大颈粗、全身呈土黄色,耳短小而圆, 无长额毛,鬃毛短而直立,背部中央有一条黑褐色脊线。 普氏野马有66条染色体,比家马多出两条。作为地球上唯一现存的野生马种,普氏野马仍保留着 6000万年前的原始基因图谱,被称为"生物基因的活化石",对生态链修复意义重大。 普氏野马是国家一级保护动物、全球濒危大型野生动物,珍稀程度堪比大熊猫。 普氏野马原产于我国新疆准噶尔盆地和蒙古国干旱荒漠草原地带,由于气候变化、人为干扰、栖息 地碎片化等原因,曾 ...
利用率逼近100%!我国科学家实现这一领域重大突破
Ke Ji Ri Bao· 2025-09-26 00:48
经该策略制备的催化剂,过去需要1吨来完成的任务,如今只需要200斤就可以完成,实现了近乎极致的 原子经济性。在丙烷脱氢制丙烯等高温苛刻反应中,该催化剂在铂用量减少90%的前提下,仍表现出优 于现行商业催化剂的活性与稳定性。 带领该研究团队的天津大学教授巩金龙表示:"我们的研究跳出传统'分散单原子'的思维框架,通过原 子级合金设计与界面调控,使贵金属在催化过程中的原子利用率逼近理论极限,为高效催化剂的设计开 拓了新路径。" 催化剂被誉为现代化学工业的"心脏",在众多化学反应中发挥着不可替代的加速作用。贵金属是催化剂 的关键组分,其用量关乎化工过程的节能增效。天津大学新能源化工团队创新提出"原子抽提"策略,将 在催化中起关键作用的贵金属铂原子全部抽提到表面参与催化反应,利用率逼近100%。相关研究成果9 月26日在线发表在国际期刊《科学》上。 ...
推动低空经济产业从“概念热”走向“实质兴”
Ke Ji Ri Bao· 2025-09-25 23:57
Core Viewpoint - The low-altitude economy is emerging as a strategic new industry that integrates new infrastructure, new productivity, new technology, and new consumption, playing a crucial role in promoting high-quality economic and social development [1] Group 1: Industry Value and Impact - The core value of the low-altitude economy lies in shaping future industrial competitive advantages, driving overall productivity leaps, and restructuring regional growth patterns [2] - It promotes traditional industry transformation through the construction of a "low-altitude+" industrial ecosystem, leading to the rapid rise of new business forms such as eVTOL and flying cars [2] - The development of the low-altitude economy is closely linked to high-end equipment manufacturing, driving collaborative development across upstream and downstream industries, potentially forming a trillion-level industrial cluster [2] Group 2: Regional Development and Policy Framework - Local economies can gain new momentum by developing characteristic low-altitude industries tailored to regional resources and conditions [3] - A unified and coordinated policy system for the low-altitude economy is essential, addressing fragmentation in airworthiness certification and airspace management [5] - The central government is promoting a multi-level, systematic policy framework through top-level design and local innovative practices [5] Group 3: Key Technologies and Trends - Key technologies in low-altitude equipment development include overall configuration and structural design, energy power, flight control, airspace management, and safety assurance [6][7] - Current trends in low-altitude equipment development are moving towards electrification, unmanned operation, and intelligence [8] Group 4: Talent Development and Education - There is a significant talent gap in the low-altitude economy, necessitating the establishment of a rapid response talent cultivation mechanism [9] - The Ministry of Education is actively developing undergraduate and doctoral programs in low-altitude technology and engineering to meet the industry's needs [10] Group 5: Flying Cars and Urban Mobility - The development of flying cars is expected to fill the gap in urban low-altitude transportation, alleviating ground traffic congestion [12] - Flying cars can leverage existing road infrastructure for takeoff and landing while utilizing urban low-altitude airspace, promoting a three-dimensional transportation system [12] - The market for flying cars in China has surpassed 10 billion and is expected to grow rapidly, becoming a core pillar of the low-altitude economy [12]