检索结果-南通市图书馆

Multifunctional AlPO_(4)reconstructed LiMn_(2)O_(4)surface for electrochemical lithium extraction from brine

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

Journal of Energy Chemistry 2024年第2期89卷 410-421,I0010页

作者： Jun gu linlin Chen Xiaowei Li guiling Luo Linjing Fan Yanhong Chao Haiyan Ji Wenshuai Zhu School of Materials Science and Engineering Jiangsu UniversityZhenjiang 212013JiangsuChina School of Chemistry and Chemical Engineering Jiangsu UniversityZhenjiang 212013JiangsuChina College of Science State Key Laboratory of Heavy Oil ProcessingChina University of Petroleum-BeijingBeijing 102249China School of the Environment and Safety Engineering Jiangsu UniversityZhenjiang 212013JiangsuChina

LiMn_(2)O_(4)(LMO)electrochemical lithium-ion pump has gained widespread attention due to its green,high efficiency,and low energy consumption in selectively extracting lithium from brine.However,collapse of crystal structure and loss of lithium extraction capacity caused by Mn dissolution loss limits its industrialized application.Hence,a multifunctional coating was developed by depositing amorphous AlPO_(4)on the surface of LMO using sol-gel method.The characterization and electrochemical performance test provided insights into the mechanism of Li^(+)embedment and de-embedment and revealed that multifunctional AlPO_(4)can reconstruct the physical and chemical state of LMO surface to improve the interface hydrophilicity,promote the transport of Li^(+),strengthen cycle stability.Remarkably,after 20 cycles,the capacity retention rate of 0.5AP-LMO reached 93.6%with only 0.147%Mn dissolution loss.The average Li^(+)release capacity of 0.5AP-LMO//Ag system in simulated brine is 28.77 mg/(g h),which is 90.4%higher than LMO.Encouragingly,even in the more complex Zabuye real brine,0.5AP-LMO//Ag can still maintain excellent lithium extraction performance.These results indicate that the 0.5AP-LMO//Ag lithium-ion pump shows promising potential as a Li^(+)selective extraction system.

关键词： LiMn_(2)O_(4) Multifunctional AlPO_(4)coating Li^(+)embedment and de-embedment mechanism Stability Hydrophilicity Various solution

Avoiding Sabatier's limitation through pulsed electrocatalysis for enhanced nitrogen oxidation performance

在线全文

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2024年第8期95卷 484-489页

作者： Xiping guan Zhongfen Nie linlin Zhang Mingxia guo Chuanwei Shi Chunlei gu Xia Liu Xin Ding College of Chemistry and Chemical Engineering Qingdao University State Key Laboratory of Fine Chemicals Dalian University of Technology(DUT)

1. Introduction The activation and conversion of the Earth’s abundant inert nitrogen resources into high-value-added products epitomize one of nature’s most critical processes[1–3]. Nitric acid （HNO3）, as a pivotal industrial raw material, showcases an extensive range of applications and possesses substantial economic value in the production of indispensable chemical compounds[4–6]. Currently,

关键词： AMMONIA

Liquefaction-induced damage evaluation of earth embankment and corresponding countermeasure

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Frontiers of Structural and Civil Engineering 2022年第9期16卷 1183-1195页

作者： linlin gu Wei ZHENG Wenxuan ZHU Zhen WANG Xianzhang LING Feng ZHANG Department of Civil Engineering Nanjing University of Science and TechnologyNanjing 210094China Department of Civil Engineering Shanghai Jiao Tong UniversityShanghai 200030China School of Mechanical Engineering Nanjing University of Science and TechnologyNanjing 210094China Department of Civil Engineering Harbin Institute of TechnologyHarbin 150001China Department of Civil Engineering Nagoya Institute of TechnologyNagoya 4668555Japan

Liquefaction of sandy soils is a big threat to the stability and the safety of an earth embankment laid on saturated soils.A large number of liquefaction-induced damages on embankment due to different types of earthquakes have been reported worldwide.In this research,the dynamic behaviors of earth embankment and the reinforcement effects of grouting as remediation method,subjected to moderate earthquake EQ1 and strong earthquake EQ2,were numerically investigated.The seismic behaviors of ground composed of cohesionless sandy soil and cohesive clayey soil were uniformly described by the cyclic mobility(CM)model,which is capable of describing accurately the mechanical property of the soil due to monotonic and cyclic loadings by accounting for stress-induced anisotropy,over-consolidation,and soil structure.It is known from the numerical investigation that the embankment would experience destructive deformation,and that the collapse mode was closely related to the properties of input seismic motion because high intensities and long durations of an earthquake motion could lead to significant plastic deformation and prolonged soil liquefaction.Under the strong seismic loading of EQ2,a circular collapse surface,combined with huge settlement and lateral spread,occurred inside the liquefication zone and extended towards the embankment crest.In contrast,in moderate earthquake EQ1,upheaval was observed at each toe of the embankment,and instability occurred only in the liquefied ground.An anti-liquefaction remediation via grouting was determined to significantly reduce liquefaction-induced deformation(settlement,lateral spreading,and local uplift)and restrain the deep-seated circular sliding failure,even though the top sandy soil liquefied in both earthquakes.When the structure was subjected to EQ2 motion,local failure occurred on the embankment slope reinforced with grouting,and thus,an additional appropriate countermeasure should be implemented to further strengthen the slope.For both input motions,the surface deformation o

关键词： dynamic response earth embankment damage pattern liquefaction ground improvement

Eco-friendly iron-catalyzed oxidation of unstrained tertiary aromatic alcohols to ketones

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

Chinese Chemical Letters 2024年第1期35卷 250-253页

作者： Shanmei Zhu Penghui Hu Mengying guo linlin Zhao linlin Yang Wei-Jin gu Wei Han Jiangsu Collaborative Innovation Center of Biomedical Functional Materials Jiangsu Key Laboratory of Biofunctional MaterialsKey Laboratory of Applied PhotochemistrySchool of Chemistry and Materials ScienceNanjing Normal UniversityNanjing 210023China

A general,facile and eco-friendly iron catalysis enables oxidation of unstrained tertiary aromatic alcohols to ketones through C-C bond cleavage even with H_(2)O_(2) as the oxidant.Notably,this transformation can tolerate oxidation-labile functional groups.The robustness of this method is further demonstrated on the late-stage oxidation of complex bioactive molecules.

关键词： Iron catalysis C-C bond cleavage Oxidation H_(2)O_(2) Late-stage functionalization

分“门”别类:博士生师门组织类型及其特征的质性研究

在线全文

学校读者我要写书评

暂无评论

现代教育管理 2024年第2期 62-71页

作者：顾建民浦琳琳浙江大学浙江杭州310058 浙江水利水电学院浙江杭州310018

师门组织是博士生成长的主要微观环境。师门通常由导师领导和管理,承载着师生、学生之间的学术交流、情感互动等,是区别于院系、研究所等正式组织进行博士生培养的非正式组织。运用质性研究方法,通过对“双一流”高校不同学科的博士生... 详细信息

师门组织是博士生成长的主要微观环境。师门通常由导师领导和管理,承载着师生、学生之间的学术交流、情感互动等,是区别于院系、研究所等正式组织进行博士生培养的非正式组织。运用质性研究方法,通过对“双一流”高校不同学科的博士生进行深度访谈发现:博士生师门存在理性密集型、理性松散型、自然密集型、自然松散型四种类型;各类师门组织在组织管理方式、组织结构、人员密度、组织氛围、培养成效方面存在差异。相较之下,密集型师门组织比松散型更有利于博士生及时获得指导与支持,师门组织管理过于正式或非正式都不利于博士生成长。良好的师门组织建设只有充分发挥导师的主导作用,注重学科差异和文化建设,才能打造有利于导生共同发展、相互成就的学术共同体。

关键词：博士生师门组织类型质性研究

胶质细胞内SNARE复合体功能及其与抑郁障碍发生的关系

在线全文

学校读者我要写书评

暂无评论

上海交通大学学报（医学版） 2024年第5期44卷 653-657页

作者：谷涓华焦扬鲁琳王琳琳昆明医科大学生物医学工程研究院昆明650500

抑郁障碍是现代人类致残和死亡的一个常见原因,部分患者对现有的抗抑郁障碍药物并不敏感,复发率极高。现有的抗抑郁障碍药物存在许多问题,迫切需要找到一种针对多个靶点的新型抗抑郁药。近年来的研究发现,可溶性N-乙基马来酰亚胺敏感因... 详细信息

抑郁障碍是现代人类致残和死亡的一个常见原因,部分患者对现有的抗抑郁障碍药物并不敏感,复发率极高。现有的抗抑郁障碍药物存在许多问题,迫切需要找到一种针对多个靶点的新型抗抑郁药。近年来的研究发现,可溶性N-乙基马来酰亚胺敏感因子附着蛋白受体(soluble N-ethylmaleimide-sensitive factor attachment protein receptor,SNARE)复合体与抑郁障碍发生及进展密切相关。该文总结和归纳了胶质细胞内SNARE复合体在抑郁障碍发生过程中的潜在作用机制,并对相关研究进行综述,以期为临床上开发新型的抗抑郁障碍药物提供新的思路。

关键词：抑郁障碍可溶性N-乙基马来酰亚胺敏感因子附着蛋白受体复合体胶质细胞

高温后水泥砂浆-花岗岩复合层动态力学性能试验研究

在线全文

学校读者我要写书评

暂无评论

振动与冲击 2024年第11期43卷 176-184页

作者：顾琳琳尹克飞王振吴汩何鹏涛南京理工大学安全科学与工程学院南京210094 南京理工大学机械工程学院南京210094 南京玻璃纤维研究设计院有限公司南京210012

为研究高温后水泥砂浆-花岗岩复合层的动态力学特性,采用分离式霍普金森压杆(SHPB)设备,以温度和加载速率为可变参数,开展了复合层试件动态压缩试验及静压对比试验。结果表明:动态抗压强度和动态强度增长因子(dynamic intensity factor,... 详细信息

为研究高温后水泥砂浆-花岗岩复合层的动态力学特性,采用分离式霍普金森压杆(SHPB)设备,以温度和加载速率为可变参数,开展了复合层试件动态压缩试验及静压对比试验。结果表明:动态抗压强度和动态强度增长因子(dynamic intensity factor, DIF)均有显著的应变率效应,应变率低于45 s~(-1)时DIF随温度升高单调减小,高于45 s~(-1)后DIF随温度升高先减小后增大;高温后复合层界面黏结减弱,随着温度升高水泥砂浆和花岗岩破坏形态差异化增大;复合层试件削波耗能特性表现出加载速率低敏感和温度高敏感。峰值应力比和耗能率不随加载速率的改变而发生明显变化,高温后复合层等效波阻抗下降,削波能力得到增强而耗能效果受到削弱;随着温度升高,入射能更多地转化为反射能,透射能及破坏耗能的占比下降。

关键词：分离式霍普金森压杆(SHPB) 复合层高温冲击荷载动态力学性能

“双碳”背景下结合系统动力学和弹性网络回归的区域电力需求中长期预测方法

在线全文

学校读者我要写书评

暂无评论

供用电 2024年第7期41卷 72-83页

作者：游铭豪顾洁储琳琳宗明上海交通大学电子信息与电气工程学院上海200240 国网上海市电力公司市南供电公司上海200030

在“双碳”目标的驱动下,地区社会经济发展、能源生产与消费结构将迎来深刻的变革,从而引发区域电力需求预测影响因素和变化趋势的新特征。作为实现“双碳”目标的关键领域,电力行业亟须深入探索新形势下的区域电力需求预测方法。针对... 详细信息

在“双碳”目标的驱动下,地区社会经济发展、能源生产与消费结构将迎来深刻的变革,从而引发区域电力需求预测影响因素和变化趋势的新特征。作为实现“双碳”目标的关键领域,电力行业亟须深入探索新形势下的区域电力需求预测方法。针对这一挑战,提出了一种创新性的区域电力需求预测方法,该方法融合了系统动力学(system dynamics,SD)与弹性网络回归分析的优势。综合考虑了经济、政策、能源等多重影响因素,并基于SD模型建立了一个包含社会经济、清洁能源发电占比、电气化率、能源强度四大子系统的电力需求场景生成模型。为了进一步提升模型的预测精度,引入了弹性网络回归方法,提升了模型的拟合效果。以我国某地区为例,基于SD模型仿真结果对该地区“双碳”背景下的不同情景电力需求进行了预测,并与传统的电力需求预测方法进行了对比。结果表明所提出的预测方法能够更准确地反映区域电力需求的动态特征,为实现“双碳”目标提供了科学的决策支持。

关键词：电力需求预测 “双碳”目标弹性网络回归系统动力学场景生成

山区输电线路跳线风偏状态方程及临界风速研究

在线全文

学校读者我要写书评

暂无评论

哈尔滨工业大学学报 2024年第3期56卷 164-170页

作者：陈科技卞荣鲍旭明顾逸楼文娟徐海巍张琳琳国网浙江省电力有限公司经济技术研究院杭州310008 浙江大学结构工程研究所杭州310058

为研究山区微地形中的竖向风速对跳线风偏的影响,基于刚性直棒法对导线、跳线及绝缘子串增加竖向风荷载分析,确定跳线处最大风偏位移值作为风偏指标,建立风荷载作用前后跳线静力平衡平面的几何变换关系,提出了考虑竖向风速影响的跳线风... 详细信息

为研究山区微地形中的竖向风速对跳线风偏的影响,基于刚性直棒法对导线、跳线及绝缘子串增加竖向风荷载分析,确定跳线处最大风偏位移值作为风偏指标,建立风荷载作用前后跳线静力平衡平面的几何变换关系,提出了考虑竖向风速影响的跳线风偏状态方程。建立半径5 km的地形模型,包含跳线风偏事故地点与微气象站点,采用数值模拟方法将微气象站点风速推演到事故地点风速,获得了考虑微地形影响的跳线风偏闪络事故风速。将事故线路参数及竖向风速代入跳线风偏状态方程,得到跳线风偏临界水平风速,通过与事故风速进行比较验证了跳线风偏状态方程的可靠性。最后根据风偏状态方程分析竖向风速的变化对跳线风偏临界水平风速的影响。结果表明:随着竖向风速的增大,跳线风偏临界水平风速线性减小,当风攻角为20°时临界水平风速可降低16%。考虑竖向风速影响的跳线风偏临界水平风速取值较为安全,建议在山区输电线路跳线设计过程中加以考虑。

关键词：跳线风偏状态方程临界风速竖向风速数值模拟微地形