检索结果-南通市图书馆

中国厨卫 2024年第8期23卷 54-56页

作者：吴宏兴沧州大运河建设发展有限公司河北沧州061000

文章以某建筑工程为例,对软基处理设计方案进行了对比分析,阐述了换填法地基加固施工技术的关键材料,探讨了换填法地基加固施工技术的应用要点,同时对换填法地基加固施工技术在建筑工程中的应用进行了分析,旨在为施工人员提供借鉴。

关键词：建筑工程换填法地基加固设计技术应用

Origin of the tribofilm from MoS_(2) nanoparticle oil additives: Dependence of oil film thickness on particle aggregation in rolling point contact

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

Friction 2021年第6期9卷 1436-1449页

作者： hongxing wu Liping WANG Guangneng DONG State Key Laboratory of Solidification Processing Center of Advanced Lubrication and Seal MaterialsNorthwestern Polytechnical UniversityXi’an 710072China Petro China Lanzhou Lubricating Oil R&D Institute Lanzhou 730060China Key Laboratory of Education Ministry for Modern Design and Rotor-Bearing System Xi'an Jiaotong UniversityXi'an 710049China

The lubrication effectiveness of MoS_(2) nanoparticles as an oil additive remains unclear,restricting its application in industry to reduce *** goal of this work was to explore the lubrication mechanism of MoS_(2) nanoparticles as an oil *** this study,the oil film thickness behaviors of MoS_(2) nanoparticles in poly-alpha olefin(PAO4)base oil,PAO4 with 3 wt%dispersant(polyisobutyleneamine succinimide,PIBS),and 0W20 engine oil were investigated using an elastohydrodynamic lubrication(EHL)testing *** the EHL tests,the flow patterns around the contact area and the tribofilm covering rate on contact area were studied using optical microscopy to understand the lubrication *** results indicate that both the dispersant and nanoparticle aggregation significantly affected the oil film *** expected oil film thickness increase in the case of 0.1 wt%MoS_(2) in PAO4 base oil was obtained,with an increase from 30 to 60 nm over 15 min at a velocity of 50 mm/*** pattern analysis revealed the formation of particle aggregation on the rolling path when lubricated with 0.1 wt%MoS_(2),which is associated with a tribofilm coverage rate of 41.5%on the contact ***,an oil film thickness increase and particle aggregation were not observed during the tests with 0.1 wt%MoS_(2) blended with 3 wt%PIBS as the dispersant in PAO4 base oil,and for 0.75 wt%MoS_(2) in 0W20 engine *** results suggest that nanoparticles responsible for tribofilm formation originated from aggregates,but not the well-dispersed nanoparticles in point *** understanding should aid the advancement of novel lubricant additive design.

关键词： nanoparticle lubrication oil film thickness flow pattern particle aggregation

乡村振兴战略下农家书屋的困局、机遇与可持续发展策略

在线全文

学校读者我要写书评

暂无评论

河南图书馆学刊 2024年第4期44卷 71-73页

作者：林曦武洪兴攀枝花学院图书馆四川攀枝花617000

农家书屋是乡村文化建设体系的重要组成部分。文章简述了农家书屋的实际运营困局,分析了国家乡村振兴战略为农家书屋带来的发展机遇,提出了加强制度执行力度、优化资源结构、加强人才队伍建设、创新“农家书屋+”发展模式、加强数字资... 详细信息

农家书屋是乡村文化建设体系的重要组成部分。文章简述了农家书屋的实际运营困局,分析了国家乡村振兴战略为农家书屋带来的发展机遇,提出了加强制度执行力度、优化资源结构、加强人才队伍建设、创新“农家书屋+”发展模式、加强数字资源建设等可持续发展策略,以期为乡村文化振兴探索一条特色发展之路。

关键词：乡村振兴文化建设农家书屋发展策略

维普期刊数据库博看期刊

80 kVA交流电炉熔分铜渣选尾料金属化球团提取铁合金

在线全文

学校读者我要写书评

暂无评论

有色金属工程 2024年第5期14卷 66-72,154页

作者：马鹏宗红星吴红星赵德刚赵怀宇张天权金玉芬镍钴共伴生资源开发与综合利用全国重点实验室甘肃金昌737100 金川镍钴研究设计院甘肃金昌737100 金川集团铜业公司甘肃金昌737100

铜渣选尾料是铜冶炼炉渣经过选矿工艺处理后产出的尾料,其中赋存丰富的Fe、Ni、Cu、Cr等有价金属。以回转窑还原焙烧后得到的铜渣选尾料金属化球团为研究对象,采用80 kVA交流电炉进行熔分实验,研究了额定工况下还原剂、助熔剂、沉降时... 详细信息

铜渣选尾料是铜冶炼炉渣经过选矿工艺处理后产出的尾料,其中赋存丰富的Fe、Ni、Cu、Cr等有价金属。以回转窑还原焙烧后得到的铜渣选尾料金属化球团为研究对象,采用80 kVA交流电炉进行熔分实验,研究了额定工况下还原剂、助熔剂、沉降时间等不同工艺条件对Fe、Ni、Cu等金属回收率的影响,以及金属化球团熔分过程主要元素的迁移规律。结果表明,经回转窑还原得到的铜渣选尾料金属化球团在1530℃、熔剂率18%、沉降时间30 min工艺条件下进行电炉熔分可有效回收铁、铜等有价金属,获得高品位铁合金产品,Fe回收率达95%以上,镍、铜回收率分别达到38%和71%。元素走向分析表明,S、Pb、As等杂质元素会不同程度进入合金。

关键词：铜渣选尾料金属化球团熔分铁合金

Design of a Transverse-flux Permanent-magnet Linear Generator and Controller for Use with a Free-piston Stirling Engine

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Mechanical Engineering 2016年第4期29卷 832-842页

作者： ZHENG Jigui HUANG Yuping wu hongxing ZHENG Ping Electrical Engineering & Automation Department Harbin Institute of Technology Harbin 150001 China Beijing Research Institute of Precise Mechatronic Controls Beijing 100076 China

Transverse-flux with high efficiency has been applied in Stirling engine and permanent magnet synchronous linear generator system,however it is restricted for large application because of low and complex process.A novel type of cylindrical,non-overlapping,transverse-flux,and permanent-magnet linear motor（TFPLM） is investigated,furthermore,a high power factor and less process complexity structure research is *** impact of magnetic leakage factor on power factor is discussed,by using the Finite Element Analysis（FEA） model of stirling engine and TFPLM,an optimization method for electro-magnetic design of TFPLM is proposed based on magnetic leakage *** relation between power factor and structure parameter is investigated,and a structure parameter optimization method is proposed taking power factor maximum as a *** last,the test bench is founded,starting experimental and generating experimental are performed,and a good agreement of simulation and experimental is *** power factor is improved and the process complexity is *** research provides the instruction to design high-power factor permanent-magnet linear generator.

关键词： permanent-magnet linear motor(TFPLM) stirling engine magnetic leakage factor power factor

在线全文

学校读者我要写书评

暂无评论

采用RKEF技术从铜渣尾料中提取铁合金

中国冶金 2024年第7期34卷 122-128页

作者：马鹏吴红星宗红星赵德刚赵怀宇张天权金玉芬郑江华镍钴共伴生资源开发与综合利用全国重点实验室甘肃金昌737100 金川镍钴研究设计院甘肃金昌737100 金川集团铜业公司甘肃金昌737100

中国是铜冶炼生产大国,每年产出铜渣尾料约1500万t,该尾料中富含多种有价金属。为了有效回收铜渣尾料中的有价金属,实现固废资源再利用,减少环境污染,以铜渣尾料为原料,采用RKEF技术(球团预制→回转窑还原焙烧→电炉还原熔炼)还原提取... 详细信息

中国是铜冶炼生产大国,每年产出铜渣尾料约1500万t,该尾料中富含多种有价金属。为了有效回收铜渣尾料中的有价金属,实现固废资源再利用,减少环境污染,以铜渣尾料为原料,采用RKEF技术(球团预制→回转窑还原焙烧→电炉还原熔炼)还原提取铜渣尾料中的有价金属。试验以煤为还原剂、石灰石为熔剂,探索最佳冶炼参数,最终在电炉中还原熔分得到含Fe质量分数大于95%的铁合金,其可作为钢铁冶炼的原料。本研究将铜渣尾料资源化利用延伸至炼钢行业,为铜渣尾料综合利用奠定了理论及实践基础。

关键词：铜渣尾料提取铁合金还原 RKEF技术

Optimization control strategy for single-phase permanent magnet generator based on voltage ripple

在线全文

学校读者我要写书评

暂无评论

High Technology Letters 2013年第4期19卷 429-436页

作者：周寿明 wu hongxing Zhao Gouping Li Liyi Electrical Engineering and Automation Harbin Institute of Technology

A method of feedforward compensation for electromotive force(EMF) in the single-phase permanent magnet linear generation system and a research in the performance of the single-phase PMLG system are presented.A general mathematical model for the single-phase permanet magnet linear generator(PMLG) system is established and the current loop,voltage loop and the feedforward control are studied based on it for the control *** this paper analyses the transfer function of the power system,optimizes current loop and voltage loop parameters by engineering algorithm,and calculates the optimal control *** EMF feedforward compensation method is developed to optimize the control system which improves dynamic performance of the power system but does not affect the steady-state *** result of this research verifies the correctness and rationality of the design for the control system.

关键词： linear motor generation system single-phase motor feedforward control

公立医院绩效考核视角下住院病案首页事后质控分析

在线全文

学校读者我要写书评

暂无评论

中国病案 2024年第6期25卷 12-14页

作者：石函宁宋慧吴文靖吴红星赵曼周静江苏省苏北人民医院江苏省扬州市225001

目的建立住院病案首页字段质控规则,通过事后质控,提高住院病案首页质量和上传效率。方法根据全国三级公立医院绩效考核与医疗质量管理住院病案首页采集系统接口标准,对811个住院病案首页字段建立49条质控规则,通过使用Python软件构... 详细信息

目的建立住院病案首页字段质控规则,通过事后质控,提高住院病案首页质量和上传效率。方法根据全国三级公立医院绩效考核与医疗质量管理住院病案首页采集系统接口标准,对811个住院病案首页字段建立49条质控规则,通过使用Python软件构建事后质控管理框架,2022年6月1日-2023年6月30日对158 513份住院病案首页进行质控,每月15日前对上1个月度的住院病案首页进行全量质控,质控结果及时反馈病案信息小组进行整改。结果平均每月质控住院病案首页12 193份,月度住院病案首页问题反馈次数从12次下降到4次,报错率从35.9%下降到16.3%。报错主要集中在病案编码员失误、信息系统故障、未发现的潜在问题等突发情况。结论月度事后质控,可以较好地提升住院病案首页质量,提升绩效考核平台住院病案首页数据上传的准确性。

关键词：住院病案首页绩效考核事后质量控制

在线全文

学校读者我要写书评

暂无评论

铜铅冶炼伴生锡回收利用进展研究

云南冶金 2024年第4期53卷 93-97页

作者：邱文顺张振华宋兴诚吴红星云南锡业股份有限公司云南昆明650021 云南锡业新材料有限公司云南昆明650021 云南锡业集团(控股)有限责任公司云南昆明650021

针对锡二次资源受来源的不确定性、资源的丰富性和多样性、组分的高度复杂性、组元含量的高波动性等因素影响,总体的资源利用程度相对较低的现状,以铜、铅冶炼伴生锡的回收为切入口,对其回收技术的优劣势进行分析与总结,为未来开发短流... 详细信息

针对锡二次资源受来源的不确定性、资源的丰富性和多样性、组分的高度复杂性、组元含量的高波动性等因素影响,总体的资源利用程度相对较低的现状,以铜、铅冶炼伴生锡的回收为切入口,对其回收技术的优劣势进行分析与总结,为未来开发短流程、高值化、经济环保的伴生锡二次资源的回收利用技术提供一定的参考。

关键词：铜冶炼铅冶炼伴生锡锡二次资源回收利用

Observation of transition from superfluorescence to polariton condensation in CsPbBr3 quantum dots film

在线全文

学校读者我要写书评

暂无评论

Light(Science & Applications) 2024年第2期13卷 316-324页

作者： Danqun Mao Linqi Chen Zheng Sun Min Zhang Zhe-Yu Shi Yongsheng Hu Long Zhang Jian wu hongxing Dong Wei Xie hongxing Xu State Key Laboratory of Precision Spectroscopy East China Normal UniversityShanghai 200241China Key Laboratory of Materials for High-Power Laser Shanghai Institute of Optics and Fine MechanicsChinese Academy of Sciences201800 ShanghaiChina Collaborative Innovation Center of Extreme Optics Shanxi UniversityTaiyuanShanxi 030006China Chongqing Key Laboratory of Precision Optics Chongqing Institute of East China Normal UniversityChongqing 401121China CAS Center for Excellence in Ultraintense Laser Science Shanghai 201800China School of Physics and Technology Center for Nanoscience and NanotechnologyWuhan UniversityWuhan 430072China

The superfluorescence effect has received extensive attention due to the many-body physics of quantum correlation in dipole gas and the optical applications of ultrafast bright radiation field based on the cooperative quantum ***,we demonstrate not only to observe the superfluorescence effect but also to control the cooperative state of the excitons ensemble by externally applying a regulatory dimension of coupling light fields.A new quasi-particle called cooperative exciton-polariton is revealed in a light-matter hybrid structure of a perovskite quantum dot thin film spin-coated on a Distributed Bragg *** the nonlinear threshold,polaritonic condensation occurs at a nonzero momentum state on the lower polariton branch owning to the vital role of the synchronized *** phase transition from superfluorescence to polariton condensation exhibits typical signatures of a decrease of the linewidth,an increase of the macroscopic coherence as well as an accelerated radiation decay *** findings are promising for opening new potential applications for super-brightness and unconventional coherent light sources and could enable the exploitation of cooperative effects for quantum optics.

关键词： quantum condensation polar