检索结果-南通市图书馆

An Integrated Carbon Dioxide Capture and Methanation Process

CCS Chemistry 2024年第5期6卷 1174-1183页

作者： Xiaochen Zhang Mengzhu Li Xingwu Liu Ang Li Yuchen Deng mi Peng Yu Zhang Charlotte Vogt Matteo Monai Junxian Gao Xuetao Qin Yao Xu Qiaolin Yu Meng Wang Guofu Wang Zheng Jiang Xiaodong Han Casper Brady Wei-Xue Li Wu Zhou Jin-Xun Liu Bingjun Xu Bert M.Weckhuysen ding Ma Beijing National Laboratory for Molecular Sciences College of Chemistry and Molecular EngineeringPeking UniversityBeijing 100871 China Academy of Aerospace Science and Innovation Beijing 100088 National energy Center for Coal to Liquids Synfuels China Co.Ltd.Beijing 101400 Beijing Key Laboratory of microstructure and Property of Advanced Materials Beijing University of TechnologyBeijing Inorganic Chemistry and Catalysis group Institute for Sustainable and Circular Chemistry and Debye Institute for Nanomaterials ScienceFaculty of ScienceUtrecht University3584 CG Utrecht State Key Laboratory of Coal Conversion Institute of Coal ChemistryChinese Academy of SciencesTaiyuan 030001 Shanghai Synchrotron radiation Facility Zhangjiang LadShanghai Advanced Research InstituteChinese Academy of SciencesShanghai 201210 Center for Catalytic Science and Technology University of DelawareNewarkDelaware 19716 Key Laboratory of Precision and Intelligent Chemistry School of Chemistry and Materials ScienceUniversity of Science and Technology of ChinaHefeiAnhui 230026 Hefei National Laboratory University of Science and Technology of ChinaHefei 230088 School of Physical Sciences CAS Key Laboratory of Vacuum PhysicsUniversity of Chinese Academy of SciencesBeijing 100049

reducing the ever-growing level of CO_(2)in the atmosphere is critical for the sustainable development of human society in the context of global *** of the capture and upgrading of CO_(2)is,therefore,highly desirable since each process step is costly,both energetically and ***,we report a CO_(2)direct air capture(DAC)and fixation process that produces *** concentrations of CO_(2)(∼400 ppm)in the air are captured by an aqueous solution of sodium hydroxide to form *** carbonate is subsequently hydrogenated to methane,which is easily separated from the reaction system,catalyzed by TiO2-supported ru in the aqueous phase with a selectivity of 99.9%among gas-phase *** concurrent regenerated hydroxide,in turn,increases the alkalinity of the aqueous solution for further CO_(2)capture,thereby enabling this one-ofits-kind continuous CO_(2)capture and methanation *** simulations demonstrate the energy feasibility of this CO_(2)DAC and methanation process,highlighting its promise for potential largescale applications.

关键词： CO_(2)capture and methanation process sodium hydroxide carbonate ru/TiO_(2) catalytic mechanism CO_(2)activation and hydrogenation

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Molecular characterization of an outbreak-involved Bacillus anthracis strain confirms the spillover of anthrax from West Africa

引用

Infectious Diseases of Poverty 2024年第1期13卷 93-94页

作者： Shuchao Wang roland Suluku Mohamed B.Jalloh Ahmed F.Samba Baogui Jiang Yubiao Xie Doris Harding Mengyao Zhang Foday Sahr Mahmud e.Sesay James S.Squire Mohamed A.Vandi Moinina N.Kallon Shoufeng Zhang rongliang Hu Yuee Zhao Zhiqiang mi Changchun Veterinary research Institute Chinese Academy of Agricultural Sciences Changchun China Department of Animal Sciences School of Agriculture and Food Sciences Njala University Njala Sierra Leone Department of microbiology College of Medicine and Allied Health Sciences University of Sierra Leone Freetown Sierra Leone ministry of Agriculture and Food Sciences Freetown Sierra Leone Beijing Institute of microbiology and epidemiology Beijing China ministry of Health and Sanitation Freetown Sierra Leone Beijing Institute of Biotechnology Beijing China

Background Anthrax,a zoonotic disease caused by the spore-forming bacterium Bacillus anthracis,remains a major global public health concern,especially in countries with limited *** Leone,a West African country historically plagued by anthrax,has almost been out of report on this disease in recent *** this study,we described a large-scale anthrax outbreak affecting both animals and humans and attempted to characterize the *** The causative agent of the animal outbreak in Port Loko District,Sierra Leone,between March and May 2022 was identified using the nanopore sequencing technique.A nationwide active surveillance was implemented from May 2022 to June 2023 to monitor the occurrence of anthrax-specific symptoms in *** cases were subsequently verified using quantitative polymerase chain ***-genome sequencing was accomplished by combining long-read and short-read sequencing *** phylogenetic analysis was performed based on the full-chromosome single nucleotide *** The outbreak in Port Loko District,Sierra Leone,led to the death of 233 animals between March 26th and May 16th,*** ruled out the initial suspicion of Anaplasma species and successfully identified *** as the causative agent of the *** a result of the government's prompt response,out of the 49 suspected human cases identifed during the one-year active surveillance,only 6 human cases tested positive,all within the frst month after the official declaration of the *** phylogenetic analysis indicated that the BaSL2022 isolate responsible for the outbreak was positioned in the ***.153 clade within the TranseuroAsian group of *** We successfully identifed a large-scale anthrax outbreak in Sierra *** causative isolate of ***,BaSL2022,phylogenetically bridged other lineages in ***.153 clade and neighboring genetic groups,***.144 and ***.148,

关键词： Molecular identification Anthrax Bacillus anthracis Sierra Leone Phylogeny Single nucleotide polymorphism

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

热连轧高碳带钢65Mn边裂原因分析及改进

引用

中国冶金 2024年第4期34卷 145-152页

作者：关建辉曲锦波丁美良罗咪江苏省沙钢钢铁研究院有限公司江苏张家港215625

高碳钢65Mn由于碳含量高、硬度大,在热轧生产中易出现边部开裂缺陷。为彻底解决高碳钢65Mn边裂问题,采用断口分析、金相组织观察、硬度检测等方法,分析了热轧高碳钢65Mn边裂缺陷的成因,并通过热模拟试验,研究了不同冷却速率对65Mn钢相... 详细信息

高碳钢65Mn由于碳含量高、硬度大,在热轧生产中易出现边部开裂缺陷。为彻底解决高碳钢65Mn边裂问题,采用断口分析、金相组织观察、硬度检测等方法,分析了热轧高碳钢65Mn边裂缺陷的成因,并通过热模拟试验,研究了不同冷却速率对65Mn钢相变过程的影响。结果表明,冷却速率显著影响65Mn钢相变过程,当冷却速率大于25℃/s时会发生马氏体相变。在热轧生产过程中,带钢边部过冷形成马氏体,马氏体硬度高,变形能力差,在卷取张力作用下,边部易产生开裂缺陷。通过减弱层流冷却强度、提高卷取温度和减少边部侧喷水等措施可有效改善带钢边部过冷问题,从而避免边裂缺陷的产生,并改善其组织和硬度均匀性。

关键词：高碳钢 65Mn 边裂卷取温度层流冷却

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

radical innovation breakthroughs of biodegradation of plastics by insects:history,present and future perspectives

引用

Frontiers of environmental Science & engineering 2024年第6期18卷 127-165页

作者： Shan-Shan Yang Wei-min Wu Federica Bertocchini Mark eric Benbow Suja P.Devipriya Hyung Joon Cha Bo-Yu Peng Meng-Qi ding Lei He Mei-Xi Li Chen-Hao Cui Shao-Nan Shi Han-Jun Sun Ji-Wei Pang Defu He Yalei Zhang Jun Yang Deyi Hou De-Feng Xing Nan-Qi ren Jie ding Craig S.Criddle State Key Laboratory of Urban Water resource and environment School of EnvironmentHarbin Institute of TechnologyHarbin 150090China Department of Civil and environmental engineering William&Cloy Codiga Resource Recovery CenterStanford UniversityStanfordCA 94305USA Plasticentropy rue Thiers 28Reims 51100France Department of entomology and Department of Osteopathic Medical Specialties Michigan State UniversityEast LansingMI 48824USA School of environmental Studies Cochin University of Science and TechnologyKochi 682022India Department of Chemical engineering Pohang University of Science and TechnologyPohang 37673Republic of Korea School of environmental Science and engineering Tongji UniversityShanghai 200092China China energy Conservation and environmental Protection Group CECEP Talroad Technology Co.Ltd.Beijing 100096China School of ecological and environmental Sciences East China Normal UniversityShanghai 200241China research Institute for Frontier Science Beihang UniversityBeijing 100191China School of environment Tsinghua UniversityBeijing 100084China

Insects damaging and penetrating plastic packaged materials has been reported since the *** innovation breakthroughs of plastic biodegradation have been initiated since the discovery of biodegradation of plastics by Tenebrio molitor larvae in 2015 followed by Galleria mellonella in *** we review updated studies on the insect-mediated biodegradation of *** biodegradation by insect larvae,mainly by some species of darkling beetles(Tenebrionidae)and pyralid moths(Pyralidae)is currently a highly active and potentially transformative area of *** the past eight years,publications have increased explosively,including discoveries of the ability of different insect species to biodegrade plastics,biodegradation performance,and the contribution of host and microbiomes,impacts of polymer types and their physic-chemical properties,and responsible enzymes secreted by the host and gut *** date,almost all major plastics including polyethylene(Pe),polypropylene(PP),polyvinyl chloride(PVC),polyethylene terephthalate(PeT),polyurethane(PUr),and polystyrene(PS)can be biodegraded by *** and ten other insect species representing the Tenebrionidae and Pyralidae *** biodegradation processes are symbiotic reactions or performed by synergistic efforts of both host and gut-microbes to rapidly depolymerize and biodegrade plastics with hourly *** digestive ezymens and bioreagents screted by the insects play an essential role in plasatic biodegradation in certain species of Tenebrionidae and Pyralidae *** research on the insect itself,gut microbiomes,transcriptomes,proteomes and metabolomes has evaluated the mechanisms of plastic biodegradation in *** conclude this review by discussing future research perspectives on insect-mediated biodegradation of plastics.

关键词： Plastics Biodegradation Insects Gut microbiomes enzymes

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Optimization and Innovation of the Operation Model of Mobile Social e-commerce under AI empowerment:Taking the Female Community Platform“Little red Book”as an example

引用

Proceedings of Business and economic Studies 2024年第4期7卷 269-274页

作者： mi Liu Jia Yu Yan Li Jun Zheng Department of Business Management of Shanghai Information Technology College Shanghai 20033China School of Information Science and Technology Shanghai Shanda UniversityShanghai 20033China

This article takes the female community platform“Little red Book”as an example to explore the optimization and innovation of mobile community e-commerce operation mode under Artificial Intelligence(AI)***,the relevant concepts were defined,and then the unique attributes of mobile community e-commerce were *** a typical representative of mobile community e-commerce,Little red Book introduces the background and characteristics of its platform,analyzes its mobile community operation mode,and focuses on exploring how to establish a mobile community e-commerce platform and effective operation mode under the empowerment of AI technology,to provide some reference and inspiration for the development and operation of Little red Book and other e-commerce platform enterprises.

关键词： Mobile social e-commerce Little red Book Female community platform AI User experience UGC

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

内外噪声扰动下放牧生态系统的稳态转换现象

引用

数学的实践与认识 2024年第1期54卷 90-98页

作者：米丽娜郭永峰丁佳鑫天津工业大学数学科学学院天津300387

生态系统的稳态转换可能会造成生态环境的退化和巨大的经济损失,研究稳态转换如何受随机因素影响非常必要.文章研究放牧模型在高斯噪声和Lévy噪声共同作用下的稳态转变现象.首先介绍了放牧模型的确定性方程,然后利用Janicki-Weron算法... 详细信息

生态系统的稳态转换可能会造成生态环境的退化和巨大的经济损失,研究稳态转换如何受随机因素影响非常必要.文章研究放牧模型在高斯噪声和Lévy噪声共同作用下的稳态转变现象.首先介绍了放牧模型的确定性方程,然后利用Janicki-Weron算法产生Lévy噪声,并通过四阶runge-Kutta算法对放牧系统进行数值模拟,最后基于稳态概率密度分别分析了内噪声和外噪声对系统稳态转换行为的影响.研究发现两种噪声均可诱导系统产生稳态转换现象,但作用相反;高斯噪声强度的增大可以诱导放牧系统从高植被态向荒漠态转换,而Lévy噪声的强度、稳定性指标和偏斜参数的增大均可促进放牧系统从荒漠态向高植被态的恢复.

关键词：放牧生态系统高斯白噪声 Lévy噪声稳态概率密度稳态转换

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

微针药物递送系统应用于角膜病治疗的研究进展

引用

中华眼科杂志 2024年第2期60卷 186-192页

作者：穆菁青弭宝月丁翔宇陈百华华夏天津大学爱尔眼科医院天津300190 中南大学爱尔眼科学院长沙410125 中南大学湘雅二医院眼科长沙410011

角膜病是我国常见的眼部疾病之一,短期内得不到有效救治很容易致盲。然而,由于眼部屏障和清除机制的存在,安全有效地将药物输送到角膜十分具有挑战性。传统给药方式生物利用度低,难以达到治疗效果。微针能够有效穿过眼表屏障,将药物顺... 详细信息

角膜病是我国常见的眼部疾病之一,短期内得不到有效救治很容易致盲。然而,由于眼部屏障和清除机制的存在,安全有效地将药物输送到角膜十分具有挑战性。传统给药方式生物利用度低,难以达到治疗效果。微针能够有效穿过眼表屏障,将药物顺利递送至靶部位,且侵入性小,是目前最具有潜力的穿透性给药技术。本文介绍了眼表的主要递送屏障,微针的分类以及在角膜疾病治疗领域的最新进展。最后,对微针递送系统应用于眼表的潜在挑战进行了分析,以期为微针在角膜疾病中的临床应用提供参考。

关键词：角膜疾病药物释放系统投药局部

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

基于Mask r-CNN和迁移学习的无人机遥感影像杉木单木树冠提取

引用

北京林业大学学报 2024年第3期46卷 153-166页

作者：谢运鸿孙钊丁志丹罗蜜李芸孙玉军北京林业大学森林资源和环境管理国家林业和草原局重点实验室北京100083

【目的】利用无人机遥感影像对树冠进行自动化提取,获取高精度树冠信息。【方法】该研究提出一种基于Mask rCNN和迁移学习的无人机影像单木树冠提取方法。首先,选用在Faster r-CNN基础上改进优化的Mask r-CNN实例分割模型,特征提取网络... 详细信息

【目的】利用无人机遥感影像对树冠进行自动化提取,获取高精度树冠信息。【方法】该研究提出一种基于Mask rCNN和迁移学习的无人机影像单木树冠提取方法。首先,选用在Faster r-CNN基础上改进优化的Mask r-CNN实例分割模型,特征提取网络在resNet50残差网络和resNet101残差网络二者间选取最优。其次,引入迁移学习与Mask rCNN一起训练,联合迁移学习的导向作用降低训练时间,提高训练精度。【结果】Mask r-CNN模型的总体精度为93.59%,用户精度为65.46%,F1分数为76.05%,平均精度均值为0.31;载入迁移学习后的Mask r-CNN模型在同等训练条件下比原模型的用户精度提升29.53%,F1分数提升19.63%,平均精度均值提升0.21;分别以resNet50和resNet101为特征提取网络的Mask r-CNN模型中,resNet50+Mask r-CNN模型的总体精度、用户精度、F1分数、平均精度均值各为96.94%、95.57%、96.17%、0.54,resNet101+Mask r-CNN模型的总体精度、用户精度、F1分数、平均精度均值各为96.20%、94.41%、95.19%、0.49;其中载入迁移学习的resNet50+Mask r-CNN模型在预测东西冠幅、南北冠幅、树冠面积与样方郁闭度的预测决定系数分别为0.87、0.84、0.93和0.83。【结论】本研究提出的基于Mask r-CNN和迁移学习的方法得到了较为精准的树冠参数结果,为无人机遥感影像评估树木资源提供了一种快速高效的解决方案。

关键词：无人机遥感影像深度学习 Mask r-CNN 迁移学习树冠提取

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Linear/branched Block Polyethylene Produced by a-Diimine Nickel(Ⅱ)Catalyst and Bis(phenoxy-imine)Zirconium Binary Catalyst System in the Presence of Diethyl Zinc

引用

Chinese Journal of Polymer Science 2021年第12期39卷 1581-1589页

作者： ding-ding Zhao Yan-Hui Hou Ke-Ning Zong mi-mi Cui Bin-Yuan Liu min Yang Hebei Key Laboratory of Functional Polymers Institute of Polymer Science and EngineeringHebei University of TechnologyTianjin 300130China State Key Laboratory of Separation Membranes and Membrane Processes School of Material Science and EngineeringTiangong UniversityTianjin 300160China

In order to promote development of linear/branched block polyethylenes based on new catalytic systems,we synthesized a novel *** nickel(Ⅱ)complex with isopropyl substituents on ortho-N-aryl and hydroxymethyl phenyl substituents on para-Naryl *** activity of a-dimine nickl(Ⅱ)catalyst was 3.02x10^(6)g-mol_(ni)^(-1)·h^(-1) at 70℃,and resultant polyethylene possessed 135/1000C *** linear/branched block polyethylenes were synthesized from ethylene polymerization catalyzed by the a-dimine nicke(Ⅱ)complex/bis(phenoxy-imine)zirconium in the presence of diethyI *** the addition of Znetz(from 0 to 400),the melting peak of resultant polyethylene changed from a single melting peak to bimodal melting *** molecular weights of resultant polyethylene ranging from 26.8 kg/mol to 17.1 kg/mol and PDI values varying gradually from 24.4 to 15.2 were obtained vla adjusting Znet;*** molar ratio of two *** addition,the branching degree of the polyethylene increased from 13/1000C to 56/1000 with the increase of the proportion of a dimine nickel(Ⅱ)*** this binary catalyst system,the reaction temperature of chain shutting polymerization can be carried out at 70℃,which is more conducive to industrial application.

关键词： Chain shuttling polymerization Linear/branched block polyethylene a-Diimine nickel Bis(phenoxy-imine)zirconium ethylene

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

融合车载影像与点云的道路边界提取与矢量化

引用

武汉大学学报（信息科学版） 2024年第4期49卷 631-639页

作者：李庞胤米晓新丁鹏辉孙为晨张华祖刘翀董震杨必胜武汉大学测绘遥感信息工程国家重点实验室湖北武汉430079 时空数据智能获取技术与应用教育部工程研究中心湖北武汉430079 青岛市勘察测绘研究院青岛市海陆地理信息集成与应用重点实验室山东青岛266034

车载激光点云的数据不完整和影像连续帧之间的地物重影现象给提取连续、完整的道路边界带来了巨大挑战。提出了一种融合点云与全景影像的道路边界提取与矢量化方法。首先,分别从点云和全景影像中提取初始道路边界点,然后基于非闭合Snak... 详细信息

车载激光点云的数据不完整和影像连续帧之间的地物重影现象给提取连续、完整的道路边界带来了巨大挑战。提出了一种融合点云与全景影像的道路边界提取与矢量化方法。首先,分别从点云和全景影像中提取初始道路边界点,然后基于非闭合Snake模型融合两种数据源中的道路边界点,实现结构化和非结构化道路边界的准确提取与矢量化。该融合过程首先基于点云中的道路边界构建特征图,并以车载影像中的道路边界提取结果为初始轮廓,然后基于道路边界的几何特性构建非闭合Snake模型,最后通过求解该模型实现多源道路边界点的融合,并完成道路边界线的矢量化。将该方法应用于2个城市场景数据集,结果表明:该方法可有效提取形状多样的结构化和非结构化道路边界,对由于遮挡导致的数据不完整和多帧影像中的地物重影具有较强的鲁棒性,对城区道路边界提取的精度、召回率、F1值分别优于95.43%、89.27%、93.38%。

关键词：道路边界提取移动激光扫描(MLS) 多模态数据融合

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：