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Efficient stabilization of dredged sludge with high water content using an improved bio-carbonation of reactive magnesia cement method

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Journal of Rock Mechanics and Geotechnical Engineering 2024年第9期16卷 3760-3771页

作者： Rui Wang Chaosheng Tang Xiaohua Pan Dianlong Wang Zhihao Dong Xiying Zhang xiancai Lu School of Earth Sciences and Engineering Nanjing UniversityNanjing210023China Qinghai Provincial Key Laboratory of Geology and Environment of Salt Lake Qinghai Institute of Salt LakesChinese Academy of SciencesXining810008China

This study proposed an improved bio-carbonation of reactive magnesia cement(RMC)method for dredged sludge stabilization using the urea pre-hydrolysis *** on unconfined compression strength(UCS),pickling-drainage,and scanning electron microscopy(SEM)tests,the effects of prehydrolysis duration(T),urease activity(UA)and curing age(CA)on the mechanical properties and microstructural characteristics of bio-carbonized samples were systematically investigated and *** results demonstrated that the proposed method could significantly enhance urea hydrolysis and RMC bio-carbonation to achieve efficient stabilization of dredged sludge with 80%high water content.A significant strength increment of up to about 1063.36 kPa was obtained for the bio-carbonized samples after just 7 d of curing,which was 2.64 times higher than that of the 2.-day cured ordinary Portland cement-reinforced *** elevated T and UA could notably increase urea utilization ratio and carbonate ion yield,but the resulting surge in supersaturation also affected the precipitation patterns of hydrated magnesia carbonates(HMCs),which weakened the cementation effect of HMCs on soil particles and further inhibited strength enhancement of bio-carbonized *** optimum formula was determined to be the case of T?2. h and UA?10 U/mL for dredged sludge stabilization.A 7-day CA was enough for bio-carbonized samples to obtain stable strength,albeit slightly affected by *** benefits of high efficiency and water stability presented the potential of this method in achieving dredged sludge stabilization and resource *** investigation provides informative ideas and valuable insights on implementing advanced bio-geotechnical techniques to achieve efficient stabilization of soft soil,such as dredged sludge.

关键词： Reactive magnesia cement(RMC)biocarbonation Urea pre-hydrolysis Dredged sludge Efficient stabilization Unconfined compressive strength Microbially induced carbonate precipitation(MICP)

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Simultaneous multiplex genome loci editing of Halomonas bluephagenesis using an engineered CRISPR-guided base editor

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Synthetic and Systems Biotechnology 2024年第3期9卷 586-593页

作者： Yulin Zhang Yang Zheng Qiwen Hu Zhen Hu Jiyuan Sun Ping Cheng xiancai Rao Xiao-Ran Jiang Medical Research Institute Southwest UniversityChongqing400716China Department of Microbiology College of Basic Medical SciencesArmy Medical University(Third Military Medical University)Chongqing400038China

Halomonas bluephagenesis TD serves as an exceptional chassis for next generation industrial biotechnology to produce various ***,the simultaneous editing of multiple loci in *** TD remains a significant ***,we report the development of a multiple loci genome editing system,named CRISPR-deaminase-assisted base editor(CRISPR-BE)in *** *** system comprises two components:a cytidine(CRISPR-cBE)and an adenosine(CRISPR-aBE)deaminase-based base ***-cBE can introduce a cytidine to thymidine mutation with an efficiency of up to 100%within a 7-nt editing window in *** ***,CRISPR-aBE demonstrates an efficiency of up to 100%in converting adenosine to guanosine mutation within a 7-nt editing ***-cBE has been further validated and successfully employed for simultaneous multiplexed editing in *** *** findings reveal that CRISPR-cBE efficiently inactivated all six copies of the IS1086 gene simultaneously by introducing stop *** system achieved an editing efficiency of 100%and 41.67%in inactivating two genes and three genes,*** substituting the Pcas promoter with the inducible promoter PMmp1,we optimized CRISPR-cBE system and ultimately achieved 100%editing efficiency in inactivating three *** conclusion,our research offers a robust and efficient method for concurrently modifying multiple loci in *** TD,opening up vast possibilities for industrial applications in the future.

关键词： Base editor Gene editing Multiplex Halomonas bluephagenesis

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Highly-chlorinated inert and robust interphase without mineralization of oxide enhancing high-rate Li metal batteries

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Chinese Chemical Letters 2024年第6期35卷 239-243页

作者： Long Li Kang Yang Chenpeng Xi Mengchao Li Borong Li Gui Xu Yuanbin Xiao xiancai Cui Zhiliang Liu Lingyun Li Yan Yu Chengkai Yang Key Laboratory of Advanced Materials Technologies International(HongKong Macao and Taiwan)Joint Laboratory on Advanced Materials TechnologiesSchool of Materials Science and EngineeringFuzhou UniversityFuzhou 350108China College of Material Sciences and Chemical Engineering Harbin Engineering UniversityHarbin 150001China

Side reactions and dendrite growth triggered by the unstable interface and inhomogeneous deposition have become the biggest obstacle to the commercialization for lithium metal *** this study,a highly-chlorinated organic-inorganic hybrid interfacial protective layer is developed by rationally tuning the interfacial passivation and robustness to achieve the convenient and efficient Li metal *** polyvinyl chloride(PVC)can effectively resist water and oxygen,which is confirmed by density functional *** organic-dominant solid electrolyte interphases(SEI)with lithium chloride are investigated by the X-ray photoelectron spectroscopy(XPS)with little mineralization of oxide,such as Li_(2.O and Li_(2.CO_(3).With such artificial SEI,a uniform and dense lithium deposition morphology are formed and an ultra-long stable cycle of over 500 h are achieved even at an ultra-high current density of 10 m A/cm^(2..Moreover,the simple and convenient protected anode also exhibits excellent battery stability when paired with the LiNi_(0.8)Co_(0.1)Mn_(0.1)O_(2.(NCM811)and LiFePO_(4)(LFP)cathode,showing great potential for the commercial application of lithium metal batteries.

关键词： Highly-chlorinated Water/oxygen resistance Stable interphase Dendrite-free lithium metal batteries High-rate

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Effects of COVID-19 pandemic on human fertility:A scientometric and visualized evaluation

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Genes & Diseases 2024年第4期11卷 113-115页

作者： Xiangxiu Wang Yifan Rao Lili Tan Ziqiu Hu Lin Wen Weixi Qin Bingyi Li Keqiao He Tieying Yin Juhui Qiu Yuming Wang Yaokai Chen xiancai Rao Guixue Wang Key Laboratory of Biorheological and Technology of the Ministry of Education State and Local Joint Engineering LaboratoryforVascular ImplantsModern LifeScience Experiment Teaching Center at Bioengineering College of Chongqing UniversityChongqing 400030China Department of Microbiology College of Basic Medical SciencesKey Laboratory of Microbial Engineering Under the Educational Committee in ChongqingArmy Medical University(Third Military Medical University)Chongqing 400038China Jinfeng Laboratory Chongqing 401329China Division of Infectious Diseases Chongqing Public Health Medical CenterChongqing 400036China

CovID-19,also known as coronavirus disease 2.19,is a novel coronavirus disease with high infectivity,strong heterogeneity,and long incubation period(generally 3-14 days).Its main symptoms and signs include fever,dry cough,nasal congestion,fatigue,disorientation,lymphopenia,and *** short-term and long-term impacts of covID-19 on human health,particularly its effects on human reproduction and offspring development,continue to receive significant concerns,as they may lead to potential sequelae for several decades or even centuries.

关键词： nasal fertility fever

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Atmospheric COremoval efficiency through enhanced silicate weathering in croplands: a review with emphasis on the contribution of fungi

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Journal of Earth Science 2024年

作者： Zibo Li Gaojun Li Jonathan M.Adams Dongxing Guan Liang Zhao Rongjun Bian Qing Hu xiancai Lu Junfeng Ji Jun Chen State Key Laboratory of Palaeobiology and Stratigraphy， Nanjing Institute of Geology and Palaeontology， Chinese Academy of Sciences Key Laboratory of Surficial Geochemistry， Ministry of Education， School of Earth Sciences and Engineering and Frontiers Science Center for Critical Earth Material Cycling， Nanjing University School of Geography and Ocean Science， Nanjing University Institute of Soil and Water Resources and Environmental Science， College of Environmental and Resource Sciences， Zhejiang University Institute of Resource， Ecosystem and Environment of Agriculture， Nanjing Agricultural University Xiong'an Institute of Innovation， Chinese Academy of Sciences

Enhanced silicate weathering （ESW） is a geoengineering method aimed at accelerating carbon dioxide (CO2. removal （CDR） from atmosphere by increasing the weathering flux of silicate rocks and minerals. It has emerged as a promising strategy for CDR. Theoretical studies underscore ESW’s substantial potential for CDR and its diverse benefits for crops when applied to croplands. However， the well-known significant discrepancies in silicate weathering rates between laboratory and field conditions introduce uncertainty in CDR through ESW. By compiling data from recent literature， we calculated and compared CDR efficiency (t CO2.silicate-1ha-1y-1) observed in mesocosm experiments and field trials. The findings indicate that CDR efficiencies in field trials are comparable to or exceeding that observed in mesocosm experiments by 1-3 orders of magnitude， particularly evident with wollastonite application. The hierarchy of CDR efficiency among silicates suitable for ESW is ranked as follows: olivine ≥ wollastonite > basalt > albite ≥ anorthite. We suggest the potential role of biota， especially fungi， in contributing to higher CDR efficiencies observed in field trials compared to mesocosm experiments. We further emphasize introducing fungi known for their effectiveness in silicate weathering could potentially enhance CDR efficiency through ESW in croplands. But before implementing fungal-facilitated ESW， three key questions need addressing: （i） How does the community of introduced fungi evolve over time? （ii） What is the long-term trajectory of CDR efficiency following fungal introduction? and （iii） Could fungal introduction lead to organic matter oxidation， resulting in elevated CO2.missions? These investigations are crucial for optimizing the efficiency and sustainability of fungal-facilitated ESW strategy.

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基于偏振编码图像的低空伪装目标实时检测

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兵工学报 2024年第5期45卷 1374-1383页

作者：沈英刘贤财王舒黄峰福州大学机械工程及自动化学院福建福州350108

偏振可以提高无人机的自主侦察能力,但易受到探测角度和目标材质的影响,从而降低偏振检测的鲁棒性。为此,提出一种基于偏振图像的低空伪装目标实时检测算法YOLO-P,采用融合多偏振方向信息的编码图像作为输入,应用三维卷积模块提取不同... 详细信息

偏振可以提高无人机的自主侦察能力,但易受到探测角度和目标材质的影响,从而降低偏振检测的鲁棒性。为此,提出一种基于偏振图像的低空伪装目标实时检测算法YOLO-P,采用融合多偏振方向信息的编码图像作为输入,应用三维卷积模块提取不同偏振方向图像之间的联系特征;引入特征增强模块对多层次特征进行进一步增强;采用跨层级特征聚合网络,充分利用不同尺度的特征信息,完成特征的有效聚合,最终联合多通道特征信息输出检测结果。构建包含10类目标的低空伪装目标偏振图像数据集PICO(Polarization Image of Camouflaged Objects)。在PICO数据集上的实验结果表明,新方法可以有效检测伪装目标,mAP_(0.5:0.95)达到52.0%,mAP_(0.5)达到91.5%,检测速率达到55.0帧/s,满足实时性要求。

关键词：无人机伪装目标检测深度学习偏振成像特征增强特征聚合

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2.2.年中国台湾选后民进党派系政治发展研究

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台湾研究 2024年第1期 15-23页

作者：陈先才郭宇歆教育部人文社科重点研究基地厦门大学台湾研究中心厦门大学厦门大学台湾研究院

派系共治一直是民进党的生态传统,2.2.年选后民进党各派系将进入新的盘整期。“新潮流系”突破“老二哲学”独占鳌头,势力明显超过其他派系,民进党内或形成“反新系”联盟,各派系趋于竞合,“赖系”初现维形,值得持续观察。未来民进党或... 详细信息

派系共治一直是民进党的生态传统,2.2.年选后民进党各派系将进入新的盘整期。“新潮流系”突破“老二哲学”独占鳌头,势力明显超过其他派系,民进党内或形成“反新系”联盟,各派系趋于竞合,“赖系”初现维形,值得持续观察。未来民进党或长期执政的发展态势将深刻影响中国台湾政局和台海局势的发展。

关键词： 2.2.年选举民进党派系政治

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依恋相关情景模拟对成人依恋安全感的影响

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心理科学进展 2024年第1期32卷 14-26页

作者：曹贤才王大华白学军教育部人文社会科学重点研究基地天津师范大学心理与行为研究院天津师范大学心理学部学生心理发展与学习天津市高校社会科学实验室天津300387 北京师范大学发展心理研究院北京100875

依恋的可塑性是成人依恋领域研究的重要主题,而探究依恋的可塑性首先需要了解依恋安全感是如何获得的。依恋控制系统模型指出,个体可以通过内部表征的方式通达依恋安全感。现有研究中常常将安全基地脚本作为这种内部表征方式,但忽视了... 详细信息

依恋的可塑性是成人依恋领域研究的重要主题,而探究依恋的可塑性首先需要了解依恋安全感是如何获得的。依恋控制系统模型指出,个体可以通过内部表征的方式通达依恋安全感。现有研究中常常将安全基地脚本作为这种内部表征方式,但忽视了另一种内部表征形式,即依恋相关情景模拟。先前有几项研究提出并证实了依恋相关情景模拟这一新的依恋安全感通达路径,但尚未回答:这一新的通达路径与已有路径相比有何特异性?其作用机制是什么?以及如何基于此进行特质依恋安全干预?本课题将通过3项研究来对这些问题进行考察:研究1考察依恋相关情景模拟对依恋安全感的影响及其特异性;研究2.依恋相关情景模拟的内容和加工过程的角度考察其对依恋安全感的影响机制;研究3采用自然语言处理技术开发依恋相关情景模拟分类方法,并将其用于特质依恋安全干预。本课题将补充依恋控制系统模型的内容,能够解释依恋系统的情境灵活性,并为理解依恋的可塑性及进行依恋安全的干预带来启发。

关键词：成人依恋情景模拟依恋控制系统模型依恋安全感内部工作模式

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应用自适应注意力机制U-net的地震数据高分辨处理

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石油地球物理勘探 2024年第4期59卷 675-683页

作者：赵明赵岩沈东皞王建强代显才油气资源与勘探技术教育部重点实验室(长江大学) 湖北武汉430100 长江大学地球物理与石油资源学院湖北武汉430100 中国石化西北油田分公司石油工程监督中心新疆轮台841600 东方地球物理公司国际部河北涿州072751 中国石油新疆油田公司准东采油厂新疆阜康831511

随着油气勘探开发的不断深入,薄储层与岩性油气藏逐渐成为重要的勘探目标,这也对地震资料的分辨率提出了更高的要求。文中提出了一种基于自适应注意力机制的U-net地震数据高分辨处理方法。该方法首先利用U-net结构学习地震数据的特征表... 详细信息

随着油气勘探开发的不断深入,薄储层与岩性油气藏逐渐成为重要的勘探目标,这也对地震资料的分辨率提出了更高的要求。文中提出了一种基于自适应注意力机制的U-net地震数据高分辨处理方法。该方法首先利用U-net结构学习地震数据的特征表示,通过下采样过程的编码器提取地震数据的抽象特征,然后通过上采样的解码器进行特征重建和细化。在上采样的过程中引入了注意力机制,用于自适应地调整网络对不同地震特征的关注程度,网络能够更加有效地捕捉到地震数据更多的细节和特征。Marmousi模型合成地震记录和实际数据实验结果表明,新网络比原U-net误差更小、更稳定,可有效提高预测精度,实现对地震数据的高分辨率处理。

关键词：地震数据处理高分辨率 U-net 注意力机制自适应

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日本安全保障政策调整动向的不确定性归因分析

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日本学刊 2024年第1期 56-80,154页

作者：陈先才钟志成厦门大学台湾研究中心厦门大学台湾研究院

伴随百年变局与中美博弈确定性的不断深化,不确定性派生的认知倾向加剧了国际与地区的风险态势。岸田文雄执政以来的日本安全保障政策延承并调适了后安倍时代的战略惯性与施策取向,但同时日本的安全认知张力与安全战略阻力亦不断积聚。... 详细信息

伴随百年变局与中美博弈确定性的不断深化,不确定性派生的认知倾向加剧了国际与地区的风险态势。岸田文雄执政以来的日本安全保障政策延承并调适了后安倍时代的战略惯性与施策取向,但同时日本的安全认知张力与安全战略阻力亦不断积聚。在此背景下,明晰日本安全保障政策的调整逻辑是促进中日关系发展、维护地区安全稳定的应有之义。归因理论旨在从认知角度推论国家行为的因果关系,基于不确定性归因理论分析框架梳理日本安全保障政策的历史演进发现:在竞争性为主的竞合情境这一前置变量下,日本安全保障政策演进脉络的主动性、综合性、灵活性特点所关涉的“意图-能力”“能力-利益”“决心-其他”自变量相互作用关系构成了其内部驱动力,并在与不确定性作用下的宏观、微观、特殊决策认知结构等外部调节变量的系统效应中,共同塑造了岸田执政后日本安全保障政策动向的调整机制。

关键词：安全保障政策不确定性归因理论岸田文雄内阁战略认知日本安全保障战略

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