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An advanced ash fusion study on the melting behaviour of coal,oil shale and blends under gasification conditions using picture analysis and graphing method

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Chinese Journal of Chemical Engineering 2021年第4期34卷 393-407页

作者： yang Meng Peng Jiang yuxin yan yuxin Pan Xinyun Wu Haitao Zhao Nusrat Sharmin Edward Lester Tao Wu Cheng Heng Pang Department of Chemical and Environmental Engineering The University of Nottingham Ningbo ChinaNingbo 315100China Ningbo New Materials Institute The University of NottinghamNingbo 315042China Department of Mechanical Engineering Massachusetts Institute of TechnologyCambridge 02139USA Department of Chemical and Environmental Engineering The University of NottinghamNottingham NG72RDUK Key Laboratory for Carbonaceous Wastes Processing and Process Intensification Research of Zhejiang Province The University of Nottingham Ningbo ChinaNingbo 315100China

This study investigates the potential of solid fuel blending as an effective approach to manipulate ash melting behaviour to alleviate ashrelated problems during gasification,thus improving design,operability and *** ash fusion characteristics of Qinghai bituminous coal together with Fushun,Xinghua and Laoheishan oil shales(and their respective blends)were quantified using a novel picture analysis and graphing method,which incorporates conventional ash fusion study,dilatometry and sintering strength test,in a CO/CO_(2)*** imagebased characterisation method was used to monitor and quantify the complete melting behaviour of ash samples from room temperature to 1520℃.The impacts of blending on compositional changes during heating were determined experimentally via Xray diffraction and validated computationally using *** showed that the melting point of Qinghai coal ash to be the lowest at 1116℃,but would increase up to 1208℃,1161℃and 1160℃with the addition of 30%50%of Laoheishan,Fushun,and Xinghua oil shales,*** formation of highmelting anorthite and mullite structures inhibits the formation of lowmelting ***,the sintering point of Qinghai coal ash was seen to decrease from 1005℃to 855℃,834℃,and 819℃in the same blends due to the formation of lowmelting *** also showed that blending directly influences the sintering strength during the various stages of *** key finding from this study is that it is possible to mitigate against the severe ash slagging and fouling issue arising from high calcium and iron coals by cogasification with a high silicaalumina oil ***,blending coals with oil shales can also modify the ash melting behaviour of fuels to create the optimal ash chemistry that meets the design specification of the gasifier,without adversely affecting thermal performance.

关键词： Oil shale Coal Image-based ash fusion test Co-gasification Mineral transformation

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Shell Casing Size Measurement Method Based on Improved Hough Transform

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Instrumentation 2022年第3期9卷 19-26页

作者： ZHANG Liguang LIU Ying yan yuxin ZHANG Yuzhe Xi’an Technology University Xi’an 710021

In order to improve the accuracy and efficiency of the measurement of the Shell Case size,a measurement system based on machine vision is *** the preprocessing,threshold segmentation algorithm and edge detection of the shell case *** size measurement of lines and circles in contour using binary search method and Hough *** experiment of detecting four sizes of 100 qualified shells shows that the system can realize the rapid and accurate detection of shell casings,and can be used to assess their quality *** effectively improves the detection efficiency and further improves the automation level of detection,which has a good application prospect.

关键词： Machine Recognition Hough Transform Dichotomy Method Shell Case

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Research on How to Strengthen Women’s Right to Employment in MNEs

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Psychology Research 2023年第3期13卷 123-130页

作者： yan yuxin Murdoch University SingaporeSingapore

Women’s equal employment encounters challenges such as gender-blindness in legal protection,a cultural environment where traditional conservative views are at odds with women’s equal employment,the absence of international and domestic gender discrimination intervention links,and invisible gender *** or inequitable treatment can marginalize women and make it impossible for them to contribute to social and economic development as active members of *** gender bias in the employment process is increasingly *** paper examines the current situation of women’s equal employment and the inadequacy of relevant laws and regulations from both international and Chinese *** problem of the composition of social structures and the cultural environment which is contrary to the equality of employment of women is the main reason for the current situation and the inadequacy of *** solution to the above problems can be found in three perspectives which are legislative improvements,legal and regulatory level improvement,and perfection of multinational enterprise *** from the perspective of legal interpretation tends to focus on formal equality in women’s employment.‘‘MNEs’’means multinational *** makes it difficult to achieve the transition to substantive *** from a public policy perspective often invites criticism of government overreach and the injustice of proposing policies that favor women’s *** order to better guarantee an equal employment environment for women,this paper proposes creating a gender-disaggregated employment statistics and monitoring system based on firm type and size,thereby improving the intervention mechanism of gender discrimination in employment linked by the government,social organizations,and the media.

关键词： gender discrimination in employment market competition realization mechanism

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Analysis on geo-effects of China’s overseas industrial parks:A case study of Cambodia Sihanoukville Special Economic Zone

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Journal of Geographical Sciences 2021年第5期31卷 712-732页

作者： WANG Shufang MENG Guangwen ZHOU Jun XIONG Liran yan yuxin YU Na School of Geographic and Environmental Sciences Tianjin Normal UniversityTianjin 300387China Institute of European Civilization Tianjin Normal UniversityTianjin 300387China Institute of Free Economic Zone Tianjin Normal UniversityTianjin 300387China Faculty of Geography Yunnan Normal UniversityKunming 650500China Center for Cambodia Studies Yunnan Normal UniversityKunming 650500China

China's overseas industrial parks contribute to political and economic cooperation, cultural exchange between home and host countries. Current studies mainly discuss the effect of overseas industrial parks from the perspective of institutional and cultural difference, multi-scale coupling, as well as key partnerships, while little attention has been paid to the comprehensive analysis of overseas industrial parks. Based on a theoretical framework, this paper explores the overall effect of China's overseas industrial parks from the geo-effects perspective by using field interviews and a case study approach. The research shows that:(1) the geo-effects reveal the over effect of overseas industrial parks from the multiple and complementary dimensions of geopolitics, geo-economics, geo-society and geo-culture;(2) the Cambodia Sihanoukville Special Economic Zone, as a flagship BRI project, has produced the prominent and positive geo-effects;(3) the institutional-economic-cultural-environmental adaptability of overseas industrial parks is becoming important. Overseas industrial parks must be rooted in the politics, economy, society, and culture of host country;embedded in local social networks;balance the rights and interests of all stakeholders;and form the community of interests, community of destiny, and community of responsibility with political mutual trust, economic integration, cultural inclusiveness, and social harmony. The paper not only deepens the understanding about the overall effect of overseas industrial parks, but also provides decision support and theoretical reference for government policy makers and the overseas investment of enterprises.

关键词： overseas industrial parks geo-effects the Belt and Road Sihanoukville Special Economic Zone

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Developing a microfluidic-based system to quantify cell capture efficiency

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Science China(Life Sciences) 2009年第2期52卷 173-181页

作者： yanG Fan, GAO yuxin, ZHANG yan, CHEN Juan & LONG Mian National Microgravity Laboratory and Center for Biomechanics and Bioengineering, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100080, China 1. National Microgravity Laboratory and Center for Biomechanics and Bioengineering Institute of Mechanics Chinese Academy of Sciences Beijing 100080 China

Micro-fabrication technology has substantial potential for identifying molecular markers expressed on the surfaces of tissue cells and viruses. It has been found in several conceptual prototypes that cells with such markers are able to be captured by their antibodies immobilized on microchannel substrates and unbound cells are flushed out by a driven flow. The feasibility and reliability of such a microflu- idic-based assay, however, remains to be further tested. In the current work, we developed a microflu- idic-based system consisting of a microfluidic chip, an image grabbing unit, data acquisition and analysis software, as well as a supporting base. Specific binding of CD59-expressed or BSA-coupled human red blood cells (RBCs) to anti-CD59 or anti-BSA antibody-immobilized chip surfaces was quan- tified by capture efficiency and by the fraction of bound cells. Impacts of respective flow rate, cell concentration, antibody concentration and site density were tested systematically. The measured data indicated that the assay was robust. The robustness was further confirmed by capture efficiencies measured from an independent ELISA-based cell binding assay. These results demonstrated that the system developed provided a new platform to effectively quantify cellular surface markers effectively, which promoted the potential applications in both biological studies and clinical diagnoses.

关键词： cell surface marker microfluidic capture efficiency

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基于VSC的DCIPC阻尼系统功率振荡及限制短路电流研究

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电力自动化设备 2015年第5期35卷 58-63页

作者：李娟严宇昕聂鹏东北电力大学电气工程学院吉林吉林132012

根据相间功率控制器(IPC)和电压源型变换器(VSC)的基本原理、工作特性,将二者结合构成移相环节连续可调的动态可控相间功率控制器(DCIPC)。通过参考电压值对VSC进行调节,进而改变电感和电容支路的注入电压,达到快速连续地改变IPC各支路... 详细信息

根据相间功率控制器(IPC)和电压源型变换器(VSC)的基本原理、工作特性,将二者结合构成移相环节连续可调的动态可控相间功率控制器(DCIPC)。通过参考电压值对VSC进行调节,进而改变电感和电容支路的注入电压,达到快速连续地改变IPC各支路移相角的目的。分析移相角控制对带DCIPC联络线传输功率的调节作用,以发电机角速度变化作为反馈控制信号设定VSC产生的移相电压,从而实现抑制功率振荡的功能。该控制器电感支路由晶闸管控制电抗器(TCR)代替,电容支路由晶闸管控制串联电容器(TCSC)容性微调模式构成,分析TCR支路感抗和TCSC支路容抗对短路电流的限制作用,以晶闸管触发角作为控制信号设定DCIPC的等值参数,从而实现限制短路电流的功能。以经带DCIPC联络线相连的两机系统为例,验证了所提方法的有效性。

关键词：电压源型变换器移相器动态可控相间功率控制器功率振荡短路电流控制相间功率控制器

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《中国运动员退役转型适应评价量表》的建立及测评

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中国体育科技 2021年第10期57卷 38-45页

作者：闫昱新胡咏梅天津体育学院天津301617

目的:建立运动员退役转型适应特征概念模型,编制适用于我国运动员的退役转型适应评价量表。方法:使用已有量表部分条目和自编条目获得4个维度,共33个原始条目,作为初测量表发放并回收有效问卷,共423份,使用探索性因素分析和验证性因素... 详细信息

目的:建立运动员退役转型适应特征概念模型,编制适用于我国运动员的退役转型适应评价量表。方法:使用已有量表部分条目和自编条目获得4个维度,共33个原始条目,作为初测量表发放并回收有效问卷,共423份,使用探索性因素分析和验证性因素分析对量表条目进行筛选并检验其信效度。结果:正式量表确定为身份转换、应对策略、退役准备、社会支持4个维度,共14个条目。量表整体内部一致性系数α=0.808。身份转换维度与生活满意度相关不显著。本量表的各维度在退役运动员的性别、运动项目及运动等级上均不存在显著差异。结论:《中国运动员退役转型适应评价量表》具有良好的信度和效度,可以作为我国运动员退役转型质量的评估工具。

关键词：运动员退役转型量表测评

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氢键活化的硝基烯参与的多组分不对称串联合成研究进展

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有机化学 2020年第4期40卷 856-872页

作者：严丽君闫玉鑫陈雪冰王永超云南师范大学职业技术教育学院昆明650092 红河学院理学院云南蒙自661199

有机催化多组分不对称串联反应是构建复杂手性化合物的最有效方法之一,双功能手性催化剂是一类重要的单分子双活化有机小分子催化剂,能同时对多个反应底物进行氢键活化,实现多个新键的形成和多个手性中心的立体选择性控制.基于双功能催... 详细信息

有机催化多组分不对称串联反应是构建复杂手性化合物的最有效方法之一,双功能手性催化剂是一类重要的单分子双活化有机小分子催化剂,能同时对多个反应底物进行氢键活化,实现多个新键的形成和多个手性中心的立体选择性控制.基于双功能催化剂氢键活化的硝基烯是一类重要的有机反应合成子,能参与多种有机小分子催化的串联反应.对硝基烯参与的多组分不对称串联反应,根据双功能催化剂的结构特征,从双功能硫脲-胺催化、双功能方酰胺-胺催化、其它双功能催化剂催化三个方面进行文献综述.从反应类型、反应机理、反应特点及应用等方面进行了系统地阐述,并对该领域的研究应用和发展前景进行了展望.

关键词：双功能催化剂氢键活化硝基烯多组分反应不对称合成串联反应

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中国境外经贸合作区的政策移动研究——以天津经济技术开发区和中埃·泰达苏伊士经贸合作区为例

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地理科学 2022年第7期42卷 1187-1195页

作者：王淑芳闫语欣孟广文天津师范大学地理与环境科学学院天津300387 天津师范大学自由经济区研究所天津300387 天津师范大学欧洲文明研究院天津300387

中国境外经贸合作区的建设是国内特殊经济区发展经验在空间上的延展。基于东道国独特的发展条件,需要将国内园区的建设经验进行调整,再运用到中国境外经贸合作区以适应东道国本地化发展。构建政策移动的理论框架,采用案例分析和比较研究... 详细信息

中国境外经贸合作区的建设是国内特殊经济区发展经验在空间上的延展。基于东道国独特的发展条件,需要将国内园区的建设经验进行调整,再运用到中国境外经贸合作区以适应东道国本地化发展。构建政策移动的理论框架,采用案例分析和比较研究法,以天津经济技术开发区与中埃·泰达苏伊士经贸合作区为例,将国内园区与境外经贸合作区的相关政策进行对比分析,验证政策在不同国家“土壤环境”中的适应性。研究发现:①根据政策施行的影响因素和不同作用,政策移动可以分为政策移植、政策调试和政策创新;②规划建设经验、运营管理经验、环保政策、人才政策等可直接进行政策移植;发展模式和文化政策要进行政策调试;法规政策、晋升政策和优惠政策需要进行政策创新;③园区的共性体现在国内园区成熟经验的借鉴、人才的培育与储备、园区生态环境的保护以及基础设施和配套设施的完善;④园区的个性体现在文化的求同尊异、园区品牌的打造、晋升制度的创新和协调机制的建立等。创新性地运用政策移动性理论将国内和国外园区进行关联研究,揭示了境外经贸合作区的移植、调试和创新国内园区政策的过程,深化了政策移动理论的内涵,丰富了境外经贸合作区的理论研究成果。

关键词： “一带一路”倡议境外经贸合作区政策移动天津经济技术开发区中埃·泰达苏伊士经贸合作区

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“一带一路”沿线国家投资悖论的形成机理研究

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世界地理研究 2021年第4期30卷 781-791页

作者：王淑芳闫语欣于娜天津师范大学地理与环境科学学院天津300387

投资与贸易合作是"一带一路"倡议实施的重点。投资者往往会选择低风险且具有高收益潜力的国家或地区进行高投资,然而中国企业对"一带一路"沿线国家的投资却存在高风险与高投资并存的投资悖论现象。本文遴选2013—2018年"一带一路"沿线... 详细信息

投资与贸易合作是"一带一路"倡议实施的重点。投资者往往会选择低风险且具有高收益潜力的国家或地区进行高投资,然而中国企业对"一带一路"沿线国家的投资却存在高风险与高投资并存的投资悖论现象。本文遴选2013—2018年"一带一路"沿线吸纳中国对外直接投资金额较高且存在较高投资风险的国家,解析这些国家的时空特点,探究投资悖论的形成机理。研究发现(:1)从空间视角看,投资悖论国家大多数为中国的周边邻国。从"一带一路"的空间走向看,海上丝绸之路沿线国家分布较多;从分布密度看,东南亚地区是投资悖论国家分布的集中区。(2)从时间视角看,高风险高投资在时间上具有延续性,6年间有13个国家出现两次以上的投资悖论现象。按投资悖论出现的频次,将"一带一路"沿线国家分为高频国家、中频国家和低频国家。(3)从形成机理看,地缘区位、能源资源、地缘政治、地缘经济和人文社会这五个因素分别从不同的方面作用于投资悖论的产生。

关键词： “一带一路” 高风险高投资投资悖论形成机理

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