检索结果-南通市图书馆

Research on Iron Loss of Switched Reluctance Starter/Generator for Energy Storage

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

Protection and Control of Modern Power Systems 2024年第4期9卷 147-159页

作者： Hao Chen Xing Wang Yongqiang Liu vuong Dang quoc Wenju Yan Muhammad Saqib Antonino Musolino Guanjun Wang Yong Qi Ali Asghar Memon Alexandros G.Paspatis the Shenzhen Research Institute China University of Mining and TechnologyShenzhen 515100China the School of Electrical Engineering China University of Mining and TechnologyXuzhou 221116China Xinjiang Institute of Engineering Urumqi 830000China the International Joint Research Center of Central and Eastern European Countries on New Energy EV Technology and Equipment Xuzhou 221008China the International Cooperation Joint Laboratory of New Energy Power Generation and EVs of Jiangsu Province Colleges and Universities Xuzhou 221008China the Xuzhou Key Laboratory of New Energy EV Technology and Equipment Xuzhou 221008China the the School of Electrical Engineering China University of Mining and Tech-nologyXuzhou 221116China the Laboratory of High Performance Electric Machines(HiPems) Hanoi VN 10000Viet Nam the University of Engineering and Technology Lahore 54890Pakistan the Department of Energy Pisa Uni-versity of PisaPisa IT 56126Italy the Wuxi Inspection and Testing Certification Research Institute Wuxi 214000China the Nanjing University of Science&Tech-nology Nanjing 210094China the Mehran University of Engi-neering&Technology Jamshoro PK 76062Sindh the National Technical University of Athens Zografou GR 15780Attica

In order to better realize the energy recovery and storage of hybrid EVs(HEVs),a switched reluctance starter/generator(SRS/G)with both starting and power generation functions is investigated in this ***,the iron loss of SRS/G is mainly studied to reduce the motor loss and improve the power generation ***,the energy storage of hybrid EVs can be effectively ***,a magnetic flux density(MFD)waveforms solution method is proposed to solve the difficulty in calculating the iron loss of the SRS/*** with the commonly used finite element method,the proposed solution method has the advantages of simple,fast and small computational ***,considering the different operating conditions of SRS/G,the iron loss models for both the time-domain and frequency-domain are *** addition,the calculation formula of the variable coefficient Bertotti three-term loss separation is *** the hysteresis loss coefficient,the Steinmetz coefficient and the stray loss coefficient are respectively fitted by the Fourier fitting *** method is also applied to solve the iron loss of SRS/***,through an experimental verification,it is indicated that the development of proposed method has high accuracy.

关键词： Switched reluctance starter/generator energy storage iron loss finite element method magnetic flux density(MFD)

The Challenges of Integrated Management of Mekong River Basin in Terms of People’s Livelihood

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

正反向排水板真空预压法在地基处理工程中的应用

Journal of Water Resource and Protection（水资源与保护） 2010年第1期

作者： Alebel Abebe Belay Shah Md. Atiqul Haq vuong quoc chien Badandi Arafat

来源：评论

学校读者我要写书评

暂无评论

水运工程 2024年第7期 217-225,238页

作者：武亚军陈浩 VU quoc vuong 陈国公陈先叠上海大学力学与工程科学学院上海200444 越南水利大学土木工程学院越南河内100000 浙江省龙港市兴港投资建设有限公司浙江温州325802

目前真空预压法加固软土地基中排水板负压源通常位于顶部,由于真空度沿竖向的衰减,普通真空预压对深层土体的加固效果较差。为此提出了正反向排水板相结合的排水方式,正向排水板的负压源在排水板顶部,反向排水板的负压源在排水板的底部... 详细信息

目前真空预压法加固软土地基中排水板负压源通常位于顶部,由于真空度沿竖向的衰减,普通真空预压对深层土体的加固效果较差。为此提出了正反向排水板相结合的排水方式,正向排水板的负压源在排水板顶部,反向排水板的负压源在排水板的底部。将正反向排水板结合真空预压应用于温州某地基处理工程中,对地表沉降、真空度、孔隙水压力等指标的监测结果显示,平均固结度达到93.1%。相同工况下正反向排水板结合真空预压数值模拟得到的地表沉降大于正向排水板结合真空预压得到的地表沉降,增长率达到12.9%;相同工况下正反向排水板结合真空预压数值模拟得到的孔隙水压力在3~10 m范围内的消散情况明显优于正向排水板结合真空预压,地基加固效果更好。正反向排水板结合真空预压方法值得在工程中进一步推广应用。

关键词：基础工程正反向排水板真空预压地表沉降数值模拟固结度

Properties of poly（1-naphthylamine）/Fe3O4 composites and arsenic adsorption capacity in wastewater

在线全文

学校读者我要写书评

暂无评论

Frontiers of Materials Science 2016年第1期10卷 56-65页

作者： Minh Thi TRAN Thi Huyen Trang NGUYEN quoc Trung VU Minh vuong NGUYEN Faculty of Physics Hanoi National University of Education 136-Xuanthuy Street Caugiay District Hanoi Vietnam Faculty of Chemistry Hanoi National University of Education 136-Xuanthuy Street Caugiay District Hanoi Vietnam Department of Physics Quynhon University 170 An Duong Vuong Quynhon Vietnam

The research results of poly（1-naphthylamine）lFe3O4 （PNA/Fe3O4） nanocomposites synthesized by a chemical method for As（Ⅲ） wastewater treatment are presented in this paper. XRD patterns and TEM images showed that the Fe3O4 grain size varied from 13 to 20 nm. The results of Raman spectral analysis showed that PNA participated in part of the PNA/Fe3O4 composite samples. The grain size of PNA/Fe3O4 composite samples is about 25-30 nm measured by SEM. The results of vibrating sample magnetometer measurements at room temperature showed that the saturation magnetic moment of PNA/Fe3O4 samples decreased from 63.13 to 43.43 emu/g, while the PNA concentration increased from 5% to 15%. The nitrogen adsorption-desorption isotherm of samples at 77 K at a relative pressure PIPo of about 1 was studied in order to investigate the surface and porous structure of nanoparticles by the BET method. Although the saturation magnetic moments of samples decreased with the polymer concentration increase, the arsenic adsorption capacity of the PNA/Fe3O4 sample with the PNA concentration of 5% is better than that of Fe3O4 in a solution with pH = 7. In the solution with pH 〉 14, the arsenic adsorption of magnetic nanoparticles is insignificant.

关键词： poly(1-naphthylamin)/Fe3O4 nanocomposite magnetization arsenic adsorption

化学絮凝结合真空预压处理的渤海湾海洋疏浚泥固结特性

在线全文

学校读者我要写书评

暂无评论

大连理工大学学报 2022年第6期62卷 626-632页

作者：陈国公武亚军许嘉乐李运红王攀秦荣荣 LE Thanh Hai VU quoc vuong 上海大学土木工程系上海200444 中国冶金地质总局青岛地质勘查院山东青岛266109 越南胡志明市国立大学资源与环境研究院胡志明市740500越南越南水利大学土木工程学院河内116301越南

为了改善渤海湾海洋疏浚泥渗透性差和排水固结时间长的不足,引入化学絮凝结合真空预压的地基处理方法.首先分析了山东东营地区疏浚泥的矿物成分与物理性质,然后采用两种不同的絮凝剂进行了沉降柱试验与真空预压模型试验.结果表明:絮凝剂... 详细信息

为了改善渤海湾海洋疏浚泥渗透性差和排水固结时间长的不足,引入化学絮凝结合真空预压的地基处理方法.首先分析了山东东营地区疏浚泥的矿物成分与物理性质,然后采用两种不同的絮凝剂进行了沉降柱试验与真空预压模型试验.结果表明:絮凝剂APAM添加量越大,混液面沉降速度越快,在添加量为15%时速度最快,约5 min内沉降基本稳定;絮凝剂CaO添加量越大,混液面沉降速度越慢,当添加量越过某一值(10%)时,最终混液面基本保持不变;真空预压排水速率并非絮凝剂添加量越大越快,絮凝剂CaO添加量为0.6%时速率最快,絮凝剂APAM添加量为15%时速率最快.研究成果对于东营疏浚泥地基处理工程实践具有一定的指导意义.

关键词：渤海湾疏浚泥絮凝真空固结

在线全文

学校读者我要写书评

暂无评论

越南老街省第一高中学校汉语教学现状调查

越南老街省第一高中学校汉语教学现状调查

作者：王国正（vuong quoc CHINH）广东外语外贸大学

学位级别：硕士

随着中国经济的发展和中国对外交流与合作,汉语在全球的地位逐渐提高。本研究项目有助于了解越南老街省第一高中学校的汉语教学的情况。研究使用问卷和访谈的方法,根据对象采用不同的方式进行调查,收集资料后再用综合、归纳、统计、演... 详细信息

随着中国经济的发展和中国对外交流与合作,汉语在全球的地位逐渐提高。本研究项目有助于了解越南老街省第一高中学校的汉语教学的情况。研究使用问卷和访谈的方法,根据对象采用不同的方式进行调查,收集资料后再用综合、归纳、统计、演绎、分析等方法来研究,对老街省第一高中校汉语做出相当全面的评估。论文主要由以下几个部分组成:绪论主要概述了越南和老街省汉语教学历史状况;第二、三、四、五章对越南老街省第一高中学校的基本汉语教学情况、汉语教材与教学设备情况、汉语教师情况、汉语学习者情况作了详细的调查。通过调查,我们可以看出越南老街省第一高中学校的汉语教学规模逐年增加,教学质量也越来越高。但是这所学校的汉语教学仍然存着一些问题,比如教师学历普遍不高、师生比例不合理、课程设置没有满足学生的要求、多媒体辅助教学和教学设备明显不足。最后针对学校汉语教学情况提出建议。调查希望对老街省第一高中未来的汉语教学有促进作用。

关键词：越南老街省汉语教学现状调查

Situational Analysis Climate Change Impacts on the Livelihood and Adaptive Solutions of the Coastal Communities:A Case of Phu Tan District,Ca Mau Province

同方学位论文库评论

在线全文

同方学位论文库

学校读者我要写书评

暂无评论

Journal of Environmental Science and Engineering(B) 2021年第6期10卷 237-250页

作者： Pham Chi Trung Duong quoc Huy Doan Van Hue Nguyen Văn chien Center for Training and International Cooperation Vietnam Academy for Water ResourcesHa Noi City 11555Viet Nam South Institute for Water Resources Researches HCM City 750100Viet Nam

The Mekong River Delta has 7 coastal provinces including Tien Giang,Ben Tre,Tra Vinh,Soc Trang,Bac Lieu,Ca Mau and Kien ***,Ca Mau province which exposes to both the East and West sea with a coastline of 254 m(6 coastal districts:Dam Doi,Nam Can,Ngoc Hien,Phu Tan,Tran Van Thoi,U Minh)in the recent years,has been severely influenced by climate *** Ca Mau province has lost nearly 10,000 ha of land and coastal forests;infrastructure and properties of local people along rivers have been eroded and seriously damaged;production activities are vulnerable to sea level rise and other hydro-meteorological *** life of coastal people mainly depends on agricultural *** main income is agricultural production,forestry,aquaculture and *** paper aims to provide a situational analysis on how climate change and natural disasters affect the livelihoods of coastal communities in Ca Mau Province.A case study is conducted for Phu Tan District that addresses problems and proposes urgent measures for climate change adaptation in the near-and long-term planning.

关键词： Climate change livelihood coastal communities Ca Mau province

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

香姜,越南植物一新记录种（英文）

热带亚热带植物学报 2019年第1期27卷 99-101页

作者：武春阳阮国平邓重良严德重高飞平武进正叶幸儿夏念和雄王大学越南科学与技术院越南国立自然博物馆农业遗传研究所河内药学院越南科学与技术院科学与技术研究生院中国科学院华南植物园植物资源保护与可持续利用重点实验室广东省数字植物园重点实验室广州510650

据已有文献记载,香姜(姜科)(Alpinia coriandriodora D. Fang)仅分布于广西,现首次在越南发现其分布。该种在形态上与竹叶山姜(A. bambusifolia D. Fang)相近,但其叶片椭圆状披针形、唇瓣浅黄色及带红褐色条纹和花药附属体三角状而与后... 详细信息

据已有文献记载,香姜(姜科)(Alpinia coriandriodora D. Fang)仅分布于广西,现首次在越南发现其分布。该种在形态上与竹叶山姜(A. bambusifolia D. Fang)相近,但其叶片椭圆状披针形、唇瓣浅黄色及带红褐色条纹和花药附属体三角状而与后者有别。提供该种详细的形态学描述以及图版,亦包括在越南的分布及生态的资料。凭证标本保存于越南国立自然博物馆(VNMN)和中国科学院华南植物园(IBSC)。

关键词：姜科山姜属香姜新记录越南