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“益生817肉鸡”拿到国家新品种证书
Ke Ji Ri Bao· 2025-11-24 07:19
Core Viewpoint - The successful approval of the "Yisheng 817 broiler chicken" as a national poultry variety marks a significant milestone in China's poultry breeding history, indicating a transition from breeding technology to a nationally recognized variety [1][3]. Group 1: Industry Development - The "Yisheng 817 broiler chicken" was developed to address the shortage of specialized breeds for traditional chicken dishes like "pa chicken" and "roast chicken" [3]. - The breeding model of the 817 chicken integrates existing commercial breed resources, resulting in a breed that is efficient in growth, adaptable, and cost-effective, thus paving a unique development path for China's poultry industry [3][4]. - The 817 chicken has become one of the three main types in China's poultry industry, with an expected output of 2.47 billion birds in 2024, accounting for 17.2% of the national broiler output, and approximately 40% of this production will come from Shandong Province [4]. Group 2: Breeding and Market Impact - The breeding model of the 817 chicken involves a hybridization of fast-growing white feather broiler roosters and high-yield brown-shelled egg layers, which allows for the integration of advanced global breeding results [4]. - The "Yisheng 817 small white feather broiler chicken" has been well-received in the market, with 400,000 sets promoted within a few months [4]. - The breed is characterized by low cost, fast growth, and high-quality meat, making it suitable for both traditional Chinese and Western-style chicken products [5].
流感病毒“进化”了吗?专家回应
Ke Ji Ri Bao· 2025-11-24 06:42
流感病毒"进化"了吗?专家回应: 那么,当季接种流感疫苗是否还有效?流感监测周报显示,国家流感中心对55株甲型H3N2流感毒株进 行抗原性分析,其中24株(43.6%)为世卫组织推荐疫苗组分A/Croatia/10136RV/2023(鸡胚株)的类似株, 31株(56.4%)为A/Croatia/10136RV/2023(鸡胚株)的低反应株;55株(100.0%)均为世卫组织推荐疫苗组分 A/District of Columbia/27/2023(细胞株)的类似株。 相关专家解释,国家流感中心对分离到的毒株与世卫组织推荐的当季疫苗组分中的对应同型别疫苗推荐 株进行比较,结果表明疫苗对当前流感病毒仍然有较高匹配性,对H3N2来说,细胞培养株的疫苗效果 要略优于鸡胚培养疫苗,这和病毒特性有关。进行抗原性分析的55株都是细胞株的类似株,表明毒株匹 配度高。 "流感疫苗是覆盖了三种以上亚型的多价疫苗。"彭质斌提醒,一个流行季可能不止一种流感病毒亚型流 行,不同的亚型之间是没有交叉保护的。即便感染了某种亚型的流感病毒,仍需接种流感疫苗预防其他 亚型感染,建议公众尽早接种流感疫苗,减少感染、发病以及发生重症的风险。 当 ...
上海市养老科技产业园:打造“银发经济”生态圈
Ke Ji Ri Bao· 2025-11-24 05:36
Core Insights - The Shanghai Aging Technology Industry Park is showcasing innovative aging technology products aimed at addressing the needs of the elderly population in Shanghai, which is experiencing significant aging demographics [1][2][3] Group 1: Aging Population Statistics - By the end of 2024, the elderly population (aged 60 and above) in Shanghai is projected to reach 5.7762 million, accounting for 37.6% of the total population [2] - The "Shanghai Action Plan for Promoting Aging Technology Innovation Development (2024-2027)" aims to establish a highland for aging technology innovation and industry development by 2027 [2] Group 2: Industry Development and Infrastructure - The Shanghai Aging Technology Industry Park, covering an area of 1.3 square kilometers, consists of two main functional areas: "Evergreen Years: Innovation R&D Zone" and "Silver Hair: Industry Bearing Zone" [2] - The park has established public service platforms for R&D testing, demonstration, and incubation, collaborating with universities and research institutions for technology project development [2][3] Group 3: Innovative Products and Solutions - The park features various innovative products, including a "Nano Bath Cabin" that cleans disabled elderly individuals using only 500 milliliters of water in 15 minutes [3] - A lightweight exoskeleton robot developed by Shanghai Sanlian Ren Technology Co., Ltd. provides over 30% walking assistance for elderly individuals with lower limb weakness [3] - An intelligent adult diaper with real-time monitoring capabilities has been developed to enhance care for disabled elderly individuals [3] Group 4: Collaborative Initiatives - The "2025 Silver Technology Partner Program" received 189 project applications from 16 provinces, with 15 projects selected for acceleration, focusing on areas like smart monitoring and AI emotional companionship [4][5] - The program aims to facilitate the real-world application and iterative optimization of selected products in nursing homes [5] Group 5: Ecosystem Development - The Shanghai Aging Technology Industry Park is fostering collaboration among government, enterprises, and aging institutions to create a supportive ecosystem for the "silver economy" [6] - The park aims to provide a complete innovation ecosystem that includes scene matching, data loops, and commercial transformation [6] Group 6: Future Goals - The goal is to establish a world-class aging technology industry park within seven years, with an expected industry scale exceeding 20 billion yuan, positioning Shanghai as a leader in the "silver economy" [7]
【科技日报】纤维素全碳素合成淀粉转化率提升至93.3%
Ke Ji Ri Bao· 2025-11-24 02:56
Core Insights - The research team at the Tianjin Institute of Industrial Biotechnology has made significant advancements in the field of cellulose-derived starch synthesis, achieving a theoretical yield increase from 50% to 100% through innovative energy cycle reconstruction and enzyme stability improvements [1][2]. Group 1: Research Achievements - The team has successfully restructured the synthetic pathway for cellulose to starch conversion, addressing carbon loss issues and enhancing the overall yield [1]. - By innovatively designing glucose recovery and activation mechanisms, the team has fundamentally improved the efficiency of starch production [1]. - The real conversion rate of cellulose to starch has been enhanced to 93.3% through systematic optimization of reaction factors [1]. Group 2: Product Characteristics - The starch produced is pure linear starch with highly controllable polymerization degrees and a narrow molecular weight distribution, offering superior structural uniformity compared to naturally extracted starch [2]. - This newly synthesized starch has unique application potential in food, pharmaceuticals, and materials, particularly in chiral separation technologies [2].
【科技日报】年度学科研究前沿热点词发布
Ke Ji Ri Bao· 2025-11-24 02:56
Core Insights - The National Committee for the Standardization of Scientific and Technical Terms released 68 frontier research hot words for 2025, covering 11 disciplines including civil aviation, medicine, public health, museum studies, computer science, water resources, coal science, music, intangible cultural heritage, publishing, and surveying [1][2]. Group 1: Civil Aviation - The frontier hot words in civil aviation research include "Air Silk Road" and "Negative Carbon Aviation," among a total of 10 terms [1]. Group 2: Medicine - In the field of medicine, the hot words include "Stable Medicine" and "Intelligent Anesthesia," totaling 10 terms [1]. Group 3: Public Health and Preventive Medicine - The public health and preventive medicine hot words feature "Human Health Community" and "Eastern Healthy Diet Model," comprising 9 terms [1]. Group 4: Museum Studies - Museum studies highlight terms such as "Museum Fever" and "Phenomenal Exhibitions," with a total of 9 hot words [1]. Group 5: Computer Science - The computer science hot words include "Reinforcement Learning" and "Embodied Intelligence," totaling 6 terms [1]. Group 6: Water Resources - In water resources science, the hot words are "National Water Network" and "Smart Dams," with 5 terms [1]. Group 7: Coal Science - The coal science hot words include "Fluidized Mining of Deep Solid Resources" and "Non-destructive Filling Mining," totaling 5 terms [1]. Group 8: Music - Music research features hot words like "Immersive Opera" and "Grand Canal Music," comprising 5 terms [1]. Group 9: Intangible Cultural Heritage - The intangible cultural heritage hot words include "Spring Festival" and "Research on Intangible Cultural Heritage," totaling 4 terms [1]. Group 10: Publishing - In publishing studies, the hot words are "Ear Economy," "Cultural Digitization," and "Revitalization of Ancient Books," totaling 3 terms [1]. Group 11: Surveying - The surveying hot words include "Spatiotemporal Intelligence" and "Geographic Information Knowledge and Innovative Leadership," comprising 2 terms [1]. Methodology - The hot words were generated through a comprehensive evaluation process involving experts from respective discipline committees, based on the latest research dynamics and development trends, adhering to principles of frontier, innovation, practicality, trend, standardization, and impact [2].
2025年产业链供应链国际合作交流会举办
Ke Ji Ri Bao· 2025-11-24 02:13
Core Viewpoint - The 2025 International Cooperation and Exchange Conference on Industrial and Supply Chains, along with the Entrepreneurs' Taihu Forum, was held in Wuxi, Jiangsu Province, focusing on enhancing collaboration and innovation in key industries such as new energy and biomedicine [1] Group 1: Event Overview - The forum featured various functional areas including an industrial chain docking exhibition area and a results display area, showcasing Wuxi's technological breakthroughs and collaborative achievements [1] - The event emphasized the theme "Gathering New Quality Productive Forces, Open Cooperation for a Better Future" [1] Group 2: Regional Strengths - Jiangsu Province boasts a comprehensive industrial system with complete and synergistic industrial chains, as well as well-developed infrastructure, making it a fertile ground for business development [1] - Jiangsu's Secretary of the Provincial Party Committee, Xin Changxing, highlighted the commitment to providing long-term stability and certainty for foreign enterprises operating in the province [1] Group 3: Government Support - The Ministry of Commerce's Assistant Minister, Yuan Xiaoming, expressed willingness to share the benefits of China's large-scale market and provide essential support for the stable operation of global industrial and supply chains [1] - The government aims to create a favorable environment for foreign enterprises to deepen their engagement in China, emphasizing the importance of innovation ecosystems and market opportunities [1]
“一带一路”旗舰项目再添中国智造新引擎 
Ke Ji Ri Bao· 2025-11-24 02:13
Core Viewpoint - CRRC Dalian Company has successfully launched a new generation of passenger and freight electric locomotives tailored for Malaysia's East Coast Rail Link project, which is a flagship initiative under the Belt and Road Initiative, receiving significant attention from both governments and society [1][2] Group 1: Product Features - The newly launched passenger trains and electric locomotives are designed with a focus on "intelligent, high-end, and lightweight" principles, featuring a dual-redundancy train network control system that monitors key operational states in real-time [1] - The passenger trains are equipped with a rapid-response onboard fault diagnosis system, achieving millisecond-level response times, enhancing operational safety [1] - The electric locomotives exhibit superior starting traction, a wide constant power range, and excellent adhesion performance, along with an intelligent human-machine interaction and safety protection system [2] Group 2: Technological Advancements - The export trains incorporate several technological breakthroughs, including the most advanced domestic train control systems, enhancing automation levels for safer and more reliable operations [2] - Communication between the train and ground has been upgraded from 2G to 4G, with capabilities for 5G, and the communication method has shifted from text and voice to high-definition audio and video transmission [2] Group 3: Economic Impact - The East Coast Rail Link will connect the east and west coasts of the Malaysian peninsula, significantly reducing travel time and improving logistics efficiency, thereby promoting inclusive economic growth in the region [2] - The advanced rail transport equipment is expected to provide smarter, more comfortable, and convenient travel services for local residents, further enhancing regional railway transport efficiency and contributing to local economic and social development [2]
“一带一路”旗舰项目再添中国智造新引擎
Ke Ji Ri Bao· 2025-11-24 01:51
Core Viewpoint - CRRC Dalian Company has successfully launched a new generation of passenger and freight electric locomotives tailored for Malaysia's East Coast Rail Link project, which is a flagship initiative under the Belt and Road Initiative, receiving significant attention from both governments and society [1][2] Group 1: Product Features - The newly launched passenger trains and electric locomotives are designed with a focus on "intelligent, high-end, and lightweight" principles, featuring a dual-redundancy train network control system that monitors key operational states in real-time [1] - The passenger trains are equipped with a rapid-response onboard fault diagnosis system, achieving millisecond-level response times, enhancing operational safety [1] - The electric locomotives exhibit significant technical characteristics such as high starting traction, a wide constant power range, and superior adhesion performance, along with an intelligent human-machine interaction and safety protection system [2] Group 2: Technological Advancements - The export passenger trains incorporate several technological breakthroughs, including the most advanced domestic train control systems, enhancing automation levels for safer and more reliable operations [2] - Communication between the train and ground has been upgraded from 2G to 4G, with capabilities for 5G, transitioning from text and voice transmission to high-definition audio and video wireless transmission [2] Group 3: Economic Impact - The East Coast Rail Link will connect the east and west coasts of the Malay Peninsula, significantly reducing travel time and improving logistics efficiency, thereby promoting inclusive economic growth in the region [2] - The advanced rail transport equipment is expected to provide smarter, more comfortable, and convenient travel services for local residents, further enhancing regional railway transport efficiency and contributing to local economic and social development [2]
全国温室气体自愿减排交易市场扩容
Ke Ji Ri Bao· 2025-11-24 01:45
Core Viewpoint - The release of three new methodologies under the CCER mechanism aims to enhance greenhouse gas reduction efforts in the oil and gas industry, promoting innovative recovery and utilization of associated gas in both onshore and offshore oil fields [1][2][3] Group 1: CCER Methodologies - The third batch of CCER methodologies includes the recovery and utilization of gas from onshore gas fields, low-volume associated gas from onshore oil fields, and associated gas from offshore oil fields, expanding the total to nine methodologies [1] - The methodologies are characterized by their wide coverage across industry sectors and various types of greenhouse gases [1] Group 2: Onshore Gas Field Methodology - The "Onshore Gas Field Testing Gas Recovery Utilization Methodology" is noted for its unique Chinese innovation, addressing the lack of market-based emission reduction incentives for testing gas recovery projects globally [1] - This methodology encourages the recovery of testing gas for use in liquefied natural gas (LNG) and compressed natural gas (CNG), promoting technological upgrades in the oil and gas sector for greenhouse gas reduction and resource recovery [1] Group 3: Low-Volume Associated Gas Methodology - The "Onshore Oil Field Low-Volume Associated Gas Recovery Utilization Methodology" allows projects with associated gas production of less than 30,000 cubic meters per day to apply for CCER [2] - This methodology provides an incentive mechanism for small-scale, decentralized associated gas resource utilization projects that are currently not economically viable [2] - For example, a project in Heilongjiang with an associated gas source of 15,000 cubic meters per day could see its return on investment increase from 5% to approximately 8.5% with CCER benefits [2] Group 4: Offshore Oil Field Methodology - As of October this year, there are four projects that comply with the "Offshore Oil Field Associated Gas Recovery Utilization Methodology," with a total recovery volume of about 150 million cubic meters per year and an LPG production of 32,000 tons per year [3] - A new project is expected to recover about 100 million cubic meters of natural gas annually, resulting in a reduction of approximately 160,000 tons of emissions, which could generate an additional revenue of 12.8 million yuan per year based on an estimated CCER price of 80 yuan per ton [3]
消除“外星母舰”疑云——NASA公布3I/ATLAS彗星最新图像
Ke Ji Ri Bao· 2025-11-24 01:40
Core Insights - The article discusses the recent observations of the interstellar comet 3I/ATLAS, which has sparked curiosity and speculation since its entry into the solar system this summer, traveling at a speed exceeding 240,000 kilometers per hour [2][3] Group 1: Observations and Findings - NASA has released images from multiple spacecraft, confirming that 3I/ATLAS is a typical comet driven by ordinary physical mechanisms, dismissing theories of it being an alien spacecraft [2] - The closest images were captured by the Mars Reconnaissance Orbiter (MRO), showing a blurry white ball composed of dust and ice, with the comet's activity increasing as it approaches the Sun [3] - Data from the James Webb Space Telescope and SPHEREx provided insights into the comet's composition, revealing a significant amount of carbon dioxide and water ice near its nucleus [3] Group 2: Anomalies and Characteristics - Observations indicated unusual phenomena, such as a rapid brightening of the comet as it neared the Sun and the detection of nickel vapor, which is atypical for low-temperature environments [4] - The comet's behavior was reconstructed in three-dimensional space using data from various spacecraft, enhancing the understanding of its characteristics [4] Group 3: Size and Origin - Despite accumulating observations, the exact size of 3I/ATLAS remains uncertain, estimated to be between several hundred meters to a few kilometers in diameter, with its shape obscured by dust [5] - The origin of 3I/ATLAS is challenging to determine, with possibilities suggesting it has been drifting in interstellar space for a long time or may originate from an older stellar system [5] - The comet is expected to come closest to Earth on December 19, at approximately 270 million kilometers away, before it begins to exit the solar system [5]