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Three-Dimensional Multi-Phase Microscopic Simulation of Service Life of Recycled Large Aggregate Self-Compacting Concrete

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Journal of Materials Science and Chemical Engineering 2024年第4期12卷 126-135页

作者： Jing Li Lina Gao libo liu Liao Zhang Jianhua Zheng Jing Gao College of Pipeline and Civil Engineering China University of Petroleum (East China) Qingdao China China Huanqiu Contracting & Engineering Co. Ltd. Beijing China School of Civil and Transportation Engineering Beijing University of Civil Engineering and Architecture Beijing China The Fourth Construction Co. Ltd. of China Construction Eighth Engineering Division Qingdao China

Recycled large aggregate self-compacting concrete (RLA-SCC) within multiple weak areas. These weak areas have poor resistance to chloride ion erosion, which affects the service life of RLA-SCC in the marine environment. A three-dimensional multi-phase mesoscopic numerical model of RLA-SCC was established to simulate the chloride ions transportation in concrete. Experiments of RLA-SCC immersing in chloride solution were carried out to verify the simulation results. The effects of recycled large aggregate (RLA) content and RLA particle size on the service life of concrete were explored. The results indicate that the mesoscopic numerical simulation results are in good agreement with the experimental results. At the same depth, the closer to the surface of the RLA, the greater the chloride ion concentration. The service life of RLA-SCC in marine environment decreases with the increase of RLA content. Compared with the service life of 20% content, the service life of 25% and 30% content decreased by 20% and 42% respectively. Increasing the particle size of RLA can effectively improve the service life of RLA-SCC in chloride environment. Compared with the service life of 50 mm particle size, the service life of 70 mm and 90 mm increased by 61% and 163%, respectively. .

关键词： Recycled Large Aggregate Self-Compacting Concrete Mesoscopic Mode Chloride Ion Diffusion Numerical Analysis

Basic research and industrial development status of suancai in Northeast China: History， microflora diversity， processing technology， nutrition and safety

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Food Science and Human Wellness 2024年

作者： Qianqian Wang Jingbo Yang Yuqi Wang Meiru Xie Xiaoxi Qi Ramnarain Ramakrishna libo liu Wenkui Guo Guofang Zhang Chun Li Key Laboratory of Dairy Science， Ministry of Education， College of Food Science， Northeast Agricultural University Department of Plant Sciences， North Dakota State University Heilongjiang Institute of Green Food Science

Suancai has a lengthy history and a wide range of categories， which has some influence on the pickled diet culture around the world. Suancai production is transitioning to a large-scale， standardized production due to the growth of the market. It has a unique flavor and is rich in nutrients， and its abundance of free amino acids， vitamins and phenolics has many positive effects on the human body. This review gives the types and history of suancai， as well as its impact on the world's pickled culture. The changes in nutritional composition and flavor of suancai during fermentation are summarized. It presented the production technology and influencing factors of the northeast suancai， examined the quality and safety issues in suancai， and put forth some ideas and opinions on the standardization development of the suancai industry. It also summarized the geographic distribution and flora diversity of pickles around the world. In order to provide some knowledge and guidance for the promotion of modern industrial production in the suancai industry.

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意识形态安全视域下网络无政府主义的新动向及其治理对策

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思想教育研究 2024年第8期 84-92页

作者：刘力波崔子恒陕西师范大学马克思主义学院陕西西安710061 陕西师范大学国家安全学院陕西西安710061

以反权威和追求网络空间绝对自由为思想内核的网络无政府主义,通过迎合思潮合流趋势、推动关涉议题下沉、依托新型虚拟空间和倚靠境外敌对势力正在呈现新的发展动向。当前,网络无政府主义对我国意识形态安全的冲击加速显现,包括与其他... 详细信息

以反权威和追求网络空间绝对自由为思想内核的网络无政府主义,通过迎合思潮合流趋势、推动关涉议题下沉、依托新型虚拟空间和倚靠境外敌对势力正在呈现新的发展动向。当前,网络无政府主义对我国意识形态安全的冲击加速显现,包括与其他错误思想互掺增加主流意识形态的整合困难、散播消极情绪削减民众对社会主义核心价值观的认同效度、抢占思想阵地挤压党和政府在新兴场域的话语空间以及勾连技术资本消解社会主义意识形态权威性。为此,应围绕增进公众政治认同、贯彻科技向善理念、规范网络空间秩序、动员各方主体力量和强化教育精准供给等多个维度出发综合施策,完善网络意识形态安全治理体系,防范化解网络无政府主义的现实威胁。

关键词：网络无政府主义意识形态安全发展动向治理对策

New understanding achieved from 2 years of Chinese ionospheric investigations

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Science Bulletin 2016年第7期61卷 524-542页

作者： libo liu Weixing Wan Key Laboratory of Earth and Planetary Physics Institute of Geology and Geophysics Chinese Academy of Sciences Beijing National Observatory of Space Environment Institute of Geology and Geophysics Chinese Academy of Sciences Geoscience School University of the Chinese Academy of Sciences

In the mainland of China, the number of ionospheric research groups is more than 10. Around 110 articles related to ionospheric physics have been published during 2014–2015. In this annual national report of the Committee on Space Research(COSPAR), we will outline some recent progresses in ionospheric studies conducted by the Chinese mainland scientists in the past 2 years. These investigations cover(1) the ionosphere responses to geomagnetic activities;(2) ionospheric climatology and structures;(3) couplings between the ionosphere, plasmasphere and lower atmosphere, and possible seismic signatures in the ionosphere;(4) ionospheric irregularities and scintillation;(5) ionospheric models, data assimilation and simulations;(6) ionospheric dynamics and electrodynamics;(7) progresses in the observation methodology and technique; and(8) planetary ionospheres. Such investigations will strengthen our ability to monitor the ionosphere,provide a better understanding of the ionospheric states and the underlying fundamental processes, and improve the ionospheric modeling, forecasting, and related applications.

关键词： Ionosphere Ionospheric climatology Ionospheric dynamics Ionospheric coupling Planetary ionospheres Ionospheric disturbance

Recent ionospheric investigations in China(2018–2019)

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Earth and Planetary Physics 2020年第3期4卷 179-205页

作者： libo liu WeiXing Wan Key Laboratory of Earth and Planetary Physics Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China Innovation Academy for Earth Science Chinese Academy of SciencesBeijing 100029China Beijing National Observatory of Space Environment Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100101China College of Earth and Planetary Sciences University of the Chinese Academy of SciencesBeijing 100019China

Since the release of the 2018 National Report of China on ionospheric research(liu LB and Wan WX,2018)to the Committee on Space Research(COSPAR),scientists from China's Mainland have made many new fruitful investigations of various ionospheric-related *** this update report,we briefly introduce more than 130 recent reports(2018–2019).The current report covers the following topics:ionospheric space weather,ionospheric structures and climatology,ionospheric dynamics and couplings,ionospheric irregularity and scintillation,modeling and data assimilation,and radio wave propagation in the ionosphere and sounding techniques.

关键词： ionosphere ionospheric storm ionospheric climatology ionospheric irregularity GNSS space weather

煤炭勘察设计企业EPC工程总承包项目的成本管控研究

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露天采矿技术 2024年第3期39卷 105-109页

作者：张凯刘立波中煤科工集团沈阳设计研究院有限公司辽宁沈阳110015

基于常见EPC工程总承包成本管控流程梳理典型管控问题,依据“价本分离”的方法提出了成本效益“同心圆”的管控原则,细化了预算指引和过程严管的核心内容,明确了提升分包单位管理能力和信息化建设的重要方法。结果表明:权责明晰的成本... 详细信息

基于常见EPC工程总承包成本管控流程梳理典型管控问题,依据“价本分离”的方法提出了成本效益“同心圆”的管控原则,细化了预算指引和过程严管的核心内容,明确了提升分包单位管理能力和信息化建设的重要方法。结果表明:权责明晰的成本管控原则、强有力的预算核算管理方法和施工管理能力、系统实用的信息化管理手段都将助推煤炭勘察设计企业提升EPC工程总承包项目的成本管控能力。

关键词： EPC工程总承包成本管控管理流程职责分工信息化

Ionospheric Investigations Conducted by Chinese Mainland Scientists in 2020-2021

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空间科学学报 2022年第4期42卷 653-683页

作者： liu libo LEI Jiuhou liu Jing Key Laboratory of Earth and Planetary Physics Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029 Heilongjiang Mohe National Observatory of Geophysics Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029 College of Earth and Planetary Sciences University of the Chinese Academy of SciencesBeijing 100049 Chinese Academy of Sciences Key Laboratory of Geospace Environment School of Earth and Space SciencesUniversity of Science and Technology of ChinaHefei 230022 School of Space Science and Physics Shandong Key Laboratory of Optical Astronomy and Solar-Terrestrial EnvironmentInstitute of Space SciencesShandong UniversityWeihai 264209

In this report,we outline works done by scientists from the Mainland of China on various ionospheric topics after the release of the National Report of China in 2020 on ionospheric researchto the Committee on Space Research(COSPAR).More than 170 papers were published in *** current report covers the following topics:ionospheric space weather,ionospheric structures and climatology,ionospheric dynamics and couplings,ionospheric irregularity and scintillation,modeling and data assimilation,and ionosphere and sounding *** ionospheres are included for the first time.

关键词： Ionospheric Space weather Planetary ionospheres

我国人工智能高质量发展的基本内涵及其时代价值

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江苏大学学报（社会科学版） 2024年第3期26卷 12-21,35页

作者：刘力波韦晰玄陕西师范大学马克思主义学院东北师范大学思想政治教育研究中心

当前,人工智能技术在全球范围内蓬勃兴起,新一轮科技革命和产业变革迅猛发展。以习近平同志为核心的党中央主动应对智能化变革新趋势,抓住人工智能创新重大历史机遇,积极实施新一代人工智能国家发展战略。这一发展战略目标明确、导向清... 详细信息

当前,人工智能技术在全球范围内蓬勃兴起,新一轮科技革命和产业变革迅猛发展。以习近平同志为核心的党中央主动应对智能化变革新趋势,抓住人工智能创新重大历史机遇,积极实施新一代人工智能国家发展战略。这一发展战略目标明确、导向清晰、内涵丰富、体系完备,是我国在新时代探索科技创新规律,开创高质量发展新格局的重要举措之一。我国人工智能高质量发展围绕“以人民为中心”的原则,旨在通过人工智能场景创新,引领美好生活新图景的形成,对于新时代我国完善创新型国家建设、提升国家治理体系和治理能力现代化具有重大的时代价值。

关键词：人工智能国家创新体系新质生产力高质量发展

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连翘在园林绿化中的应用模式研究

现代农业研究 2024年第4期30卷 64-66页

作者：刘立波邓洁刘雅兰凯里学院大健康学院贵州凯里556011

连翘作为广泛应用于园林绿化的植物,在环境适应性、美学价值以及生态功能方面具备独特优势,因而成为园林绿化研究的重点。连翘不仅以春季绚丽的黄色花朵著称,也因其对城市复杂环境的高度适应能力而广受青睐。本文旨在探索连翘在园林绿... 详细信息

连翘作为广泛应用于园林绿化的植物,在环境适应性、美学价值以及生态功能方面具备独特优势,因而成为园林绿化研究的重点。连翘不仅以春季绚丽的黄色花朵著称,也因其对城市复杂环境的高度适应能力而广受青睐。本文旨在探索连翘在园林绿化中的多样化应用模式,分析其在不同城市绿化环境中的功能和作用,以期为城市园林绿化提供更多元化且生态友好的植物应用策略。

关键词：连翘园林绿化应用模式