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| 1 | Effect of processing parameters on the densification of an additively manufactured 2024 Al alloy显示文摘Understanding the densification behaviours and formation mechanisms of defects are essential to fabricate high quality and high strength aluminium components using selective laser melting(SLM) technology. In this work, the effects of laser power and scanning speed on the densification, defects evolution and their formation mechanisms in a SLMed 2024 aluminium(Al) alloy were investigated in consideration of the corresponding laser energy input, melting mode transition and microstructural evolution. The results showed that optimizing the processing parameters effectively reduced the porosity level below1% by avoiding the lack of fusion and keyhole melting mode, and minimizing the gas pores. However,optimization of the processing parameters could not eliminate the columnar structure associated with the SLMed 2024 Al alloy, which contributed to the hot-tearing cracks in the SLMed parts. It was found that the dependence of porosity formation on SLM processing parameters was contrary to the crack density. Hence, to further improve the SLM-processability of the 2024 Al alloy it is necessary to develop SLM methods in order avoid the hot-cracking within the optimized processing parameter window associated with the minimum porosity formation. | Qiyang Tan Yingang Liu Zhiqi Fan Jingqi Zhang Yu Yin Ming-Xing Zhang | 2020 | Journal of Materials Science & Technology2020，58，23： | 13 |
| 2 | Performance and capacity fading reason of LiMn_2O_4/graphite batteries after storing at high temperature显示文摘Spinel LiMn2O4 was synthesized by a solid-state method. A 204468-size battery was fabricated and stored at 55°C. The structure and morphology of the LiMn2O4 cathode were analyzed by X-ray diffraction (XRD) and scanning electron microscopy (SEM) technique. Energy dispersive spectroscopy (EDS) was used to analyze the surface component of the carbon anode. The discharge capacities of LiMn2O4 stored for 0, 24, 48, and 96 h are 106, 98, 96, and 92 mAh?g?1, respectively. The cyclic performance is improved after storage. The capacity retentions of LiMn2O4 stored for 0, 24, 48, and 96 h are 83.8%, 85.8%, 86.9%, and 88.6% after 180 cycles. The intensity of all the LiMn2O4 diffraction peaks is weakened. Mn is detected from the carbon electrode when the battery is stored for 96 h. Cyclic voltammograms and electrochemical impedance spectroscopy (EIS) were used to examine the surface state of the electrode after storage. The results show that the resistance and polarization of LiMn2O4/electrolyte is increased after storage, which is responsible for the fading of capacity. | LIU Yunjian LI Xinhai GUO Huajun WANG Zhixing HU Qiyang PENG Wenjie YANG Yong | 2009 | Rare Metals2009，28，4： | 7 |
| 3 | 离体猪胃模型应用于内镜模拟手术培训的初步探讨显示文摘目的对离体猪胃模型应用于内镜模拟手术培训进行初步探讨。方法对消化科专科医师进行为期6个月的培训,共操作胃ESD 6例及POEM3例,此培训在北京平谷医院动物实验基地进行。进行基础理论知识学习、记录ESD总体操作时间、创面范围、操作部位、操作速度(创面面积/时间)、POEM总体操作时间、隧道长度,并应用李克特量表调查问卷检测学员培训前后的变化。数据应用SPSS25.0统计软件进行分析。结果在胃窦及胃体部位进行ESD操作时间无明显差异,且操作时间与创面大小比较差异不具有统计学意义。POEM成功1例。随着培训次数的增加,学员的操作速度逐渐提高。通过李克特量表调查问卷,发现在对适应症及禁忌症的把握、操作器械的熟悉情况、操作过程的熟悉情况、操作并发症的处理、操作的自信心程度方面均有所提高。结论离体猪胃模型应用于内镜黏膜下剥离术的模拟培训是可行的。 | 陈倩倩 熊英 张荣贵 柴宁莉 令狐恩强 HUANG Qiyang | 2019 | 现代消化及介入诊疗2019，24，1： | 6 |
| 4 | Research on the Optimization of Public Spaces in Urban Villages Based on Space Syntax:A Case Study of Luochengtou Village in Handan City显示文摘This paper based on the theory of space syntax took Luochengtou Village in Handan City,Hebei Province for example,tried to figure out a proper way for the renewal of urban villages,and change the current dilemma of'one-size-fits-all'and'removing all'in most cases,and put forward that local conditions and regional characteristics must be considered to propose the renewal strategies more suitable for the targeted objects.Based on the space syntax Depthmap software and field investigation,the paper analyzed the accessibility,intelligibility and throughput of public spaces in Luochengtou Village,and put forward 3 optimization strategies in view of the problems such as insufficient public spaces,poor accessibility and intelligibility of roads,and poor activity of spaces,specifically,increasing public activity spaces,sorting out public space network,and creating active space nodes,so as to optimize public environment of the village,enhance villagers’sense of belonging,sense of safety and sense of identity. | CHEN Xiaowei HU Qiyang CAI Qiang | 2021 | Journal of Landscape Research2021，13，6： | 2 |
| 5 | A paper-based microfluidic platform with shapememory-polymer-actuated fluid valves for automated multi-step immunoassays显示文摘Smart fluid manipulation with automatically controlled paper valves will enable automated and multi-step immunoassays on paper-based microfluidic devices.In this work,we present an integrated paper-based microfluidic platform with shape-memory polymer(SMP)-actuated fluid valves capable of automated colorimetric enzyme-linked immunosorbent assays(ELISAs).A single-layer microfluidic paper-based analytical device(μPAD)was designed to store all the reagents on the chip,and sequentially transfer reagents to a paper test zone following a specific ELISA protocol through automatic fluidic flow control by the multiple SMP-actuated valves.The actuation of a paper valve was based on the thermally responsive,duel-state shape transformation of a SMP sheet attached to the root of a paper cantilever beam for driving a hydrophilic paper bridge to connect and disconnect two paper channels.A portable colorimetric reader was developed to control the on-chip valve operations,quantify the colorimetric signal output,display the assay result,and wirelessly transmit the data to a smart phone for the application of telemedicine.Reliable operations of the paper valve and the entireμPAD were demonstrated with success rates of 97%and 93%,respectively.A detection mechanism for valve malfunction was designed and confirmed effective to identify any mal-operation of individual valves,thus rendering our platform reliable in real assays.For device calibration,we conducted direct ELISAs of rabbit IgG in phosphate-buffered saline(PBS),and achieved a low limit of detection(LOD)of 27 pM(comparable to that of standard and paper-based ELISAs).In order to demonstrate the clinical application of our multi-step immunoassay platform,we also conducted sandwich ELISAs to quantify the protein level of an inflammatory cytokine,namely tumor necrosis factor(TNF)-α,in surgically injured laryngeal tissues of rats.The protein levels of TNF-αwere shown similar between the conventional andμPAD ELISAs. | Hao Fu Pengfei Song Qiyang Wu Chen Zhao Peng Pan Xiao Li Nicole YKLi-Jessen Xinyu Liu | 2019 | Microsystems & Nanoengineering2019，5，1： | 2 |
| 6 | 2003–2017年东北露天生物质燃烧时空变化特征显示文摘近年来,露天生物质燃烧对我国东北重霾污染影响显著。本文综合利用MODIS C6火点产品以及下垫面类型产品,结合GFAS火点排放清单数据,定量研究了2003–2017年东北的火点演变特征。结果显示,东北区域近15年来火点震荡增加,并在2013–2017年达到峰值。火点季节变化明显,主要集中3–4月(占37%)和10–11月(占46%), 2013年之后春季火点突增,且在2016–2017年春季火点超过秋季。空间分布上,火点主要位于黑龙江(占71%),其次是吉林(16%)和辽宁(13%)。相比森林和草地下垫面类型,农田火点占比高达91%。本研究结果为东北区域露天生物质燃烧的重点监测时段和管控方案制订提供了参考依据。 | WANG Lili JIN Xin WANG Qinglu MAO Huiqin LIU Qiyang WENG Guoqing WANG Yuesi | 2020 | Atmospheric and Oceanic Science Letters2020，13，3： | 2 |
| 7 | Pretreatment study on chloridizing segregation and magnetic separation of low-grade nickel laterites显示文摘 | LIU Wanrong LI Xinhai HU Qiyang | 2010 | Transactions of Nonferrous Metals Society of China2010，20，1： | 1 |
| 8 | Extraction of valuable metals from lepidolite显示文摘 | Qunxuan Yan Xinhai Li Zhixing Wang Xifei Wu Huajun Guo Qiyang Hu Wenjie Peng Jiexi Wang | 2012 | Hydrometallurgy2012，，： | 1 |
| 9 | Efficient Fe based catalyst with nitrogen doped carbon material modification for propane non-oxidative dehydrogenation显示文摘Nitrogen doped carbon species(NC)was introduced into Fe based catalyst and applied into propane non-oxidative dehydrogenation.With characterizations of XRD,TEM and XPS,it was deduced that the NC modification induces the electrons transferred from NC species to Fe species,leading to electron-rich Fe species.Consequently,propane conversion and propene selectivity were increased by suppressing the by-products formation.It was also confirmed that such a modification strategy could be also extended to ones with different supports,iron precursors,and NC precursors. | Yuming Li Qiyang Zhang Xue Yu Guiling Jiang Yajun Wang Guiyuan Jiang Zhen Zhao Chunming Xu State | 2020 | Carbon Resources Conversion2020，3，1： | 1 |
| 10 | Electrochemical performance and capacity fading reason of LiMn 2 O 4 /graphite batteries stored at room temperature显示文摘 | Liu Yunjian Li Xinhai Guo Huajun Wang Zhixing Hu Qiyang Peng Wenjie Yang Yong | 2008 | Journal of Power Sources2008，，1： | 1 |
| 11 | Experimental Study on the Improvement of Yaw Stability by Coordination Control between the Caudal Fin and Anal Fin显示文摘Due to the unique locomotion,the head-shaking problem of biomimetic robotic fish inevitably occurs during rectilinear locomotion,which strongly hinders its practical applications.In this paper,we experimentally study this problem by proposing the method of coordination control between the caudal fin and anal fin.First,an untethered biomimetic robotic fish,equipped with an anal fin,a caudal fin and two pectoral fins,is developed as the experimental platform.Second,a Central Pattern Generator(CPG)-based controller is used to coordinate the motions of the anal fin and caudal fin.Third,extensive experiments are conducted to explore different combinations of the flapping frequencies,the flapping amplitudes,and the phase differences between the anal fin and caudal fin.Notably,through proper control of the anal fin,the amplitude of the yaw motion can be as small as 4.32°,which sees a 65%improvement compared to the scenario without anal fin,and a 57%improvement compared to that with a stationary anal fin.This paper provides a novel way to alleviate the head-shaking problem for biomimetic robotic fish,and first test this method on an untethered,freely swimming robotic platform,which can shed light on the development of underwater robotics. | Jiang Ding Changzhen Zheng Chaocheng Song Qiyang Zuo Yaohui Xu Bingbing Dong Jiaxu Cui Kai He Fengran Xie | 2022 | Journal of Bionic Engineering2022，19，5： | 1 |
| 12 | Extraction of valuable metals from lepidolite显示文摘 | Qunxuan Yan Xinhai Li Zhixing Wang Xifei Wu Huajun Guo Qiyang Hu Wenjie Peng Jiexi Wang | 2012 | Hydrometallurgy2012，，： | 1 |
| 13 | Effect of antimony on the growth kinetics of high purity A1-Si alloys 显示文摘 | Liu Qiyang | 1998 | ScriptaMaterialia1998，38，7： | 1 |
| 14 | Portable visible-light photocatalysts constructed from Cu2O nanoparticles and graphene oxide in cellulose matrix显示文摘 | Tu Kai Wang Qiyang Lu Ang | 2014 | The Journal of Physical Chemistry C2014，118，13： | 1 |
| 15 | Effect of commercialprocessing on pesticide residues in orange products显示文摘 | LI Yuncheng JIAO Bining ZHAO Qiyang | 2012 | European FoodResearch and Technology2012，234，3： | 1 |
| 16 | Unilateral heat-transfer asphalt pavement for permafrost protection显示文摘 | QiYang Zhu Wei Wang ShengYue Wang XiaoFeng Zhou GongYun Liao ShuangJie Wang JianBing Chen | 2011 | Cold Regions Science and Technology2011，，： | 1 |
| 17 | White collar-1,a DNA binding transcription factor and a light sensor显示文摘 | He Qiyang Cheng Ping Yang Yuhong | | 0，，5582： | 1 |
| 18 | White Collar-1,a DNA Binding Transcription Factor and a Light Sensor显示文摘 | Qiyang He Ping Cheng Yuhong Yang | 2002 | Science2002，297，5582： | 1 |
| 19 | Functional conservation of light,oxygen,or voltage domains in light sensing显示文摘 | Ping Cheng Qiyang He Yuhong yang | 2003 | PNAS May2003，，10： | 1 |
| 20 | 陕北马头山道教真身(肉身)泥塑像搬迁及保护研究[J]显示文摘 | MaLinyang(马琳燕) ZhouWeiqiang(周伟强) QiYang(齐杨) | | 文物保护与考古科技0，，： | 1 |
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