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| 1 | Coercivity enhancement of nanocrystalline hot-deformed Nd-Fe-B magnets by low-melting eutectic MM-Cu(MM=La,Ce,Pr,Nd) alloys addition显示文摘MM85Cu15(MM = La,Ce,Pr,Nd) eutectic alloys were added into the hot-deformed Nd-Fe-B magnets to enhance the coercivity.It is found that three endothermic peaks occur on the differential scanning calorimetry curve of the MM-Cu melt-spun ribbons at 432.2,451.1 and 516.5℃.The peaks substantially correspond to three types of MM-Cu low-melting eutectic phase.The coercivity of magnets increases when the MM-Cu content is lower than 4 wt%,and then keeps almost no change with the content further increasing to 5 wt%.The coercivity of the hot-deformed magnets with 4 wt% and without MM-Cu addition is 948 and 683 kA/m,respectively.Nearly all the platelet-shaped grains are isolated by the thickened intergranular phase after MM-Cu addition.Moreover,the average grain size of the magnets with MM-Cu addition decreases compared with that of the magnet without MM-Cu addition.Scanning electron microscopy images show that the areal fraction of the RE-rich grain boundary phase increases from 8.6% to 15.1% after MM-Cu addition.The La,Ce together with Cu and Ga aggregate at the grain boundary regions separating neighboring grains and smoothing the grain boundaries.Therefore,both the thickened grain boundary and decreased mean grain size result in the enhancement of coercivity after MM-Cu eutectic alloy addition. | Zheng Jing Zhaohui Guo Younian He Meiling Zhang Xin Wang Minggang Zhu Wei Li | 2020 | Journal of Rare Earths2020，38，6： | 9 |
| 2 | Effects of grain boundary ternary alloy doping on corrosion resistance of(Ce,Pr,Nd)-Fe-B permanent magnets显示文摘To satisfy the application of different environments,grain boundary doping is commonly used in the preparation of sintered magnets to improve the coercivity and the corrosion resistance.In this paper,the alloys were prepared by mixing different ratios of the master alloy(Ce,Pr,Nd)-Fe-B and the sintering aid(Pr,Nd)-Al.The coercivity of sintered(Ce,Pr,Nd)-Fe-B magnet is substantially enhanced by doping 2 wt%of(Pr,Nd)-Al,while the maximum energy product decreases slightly.We systematically investigated the corrosion behavior and micro structure of the sintered magnets in order to determine the mechanism of the degradation.The sintered(Ce,Pr,Nd)-Fe-B magnets with 2 wt% of(Pr,Nd)-Al addition exhibit the decreasing corrosion rate compared with others,due to the distribution of intergranular phases.The electrode potential difference between the main phase and the RE-rich phase is reduced by the addition of Al,improving the potential and stability of RE-rich phase due to the higher electrode potential of Al than that of Nd,Pr or Ce.In addition,the element distribution of the magnets doped by(Pr,Nd)-Al indicates that the Al-rich shell formed at the marginal area of the Ce-rich phase improves its stability.Therefo re,intergranular adding te rnary(Pr,Nd)-Al alloy powders results in both high coe rcivity and good corrosion resistance synchronously. | Xin Wang Minggang Zhu Feng Xi Meiling Zhang Fei Liu Yingjian Guo Lele Zhang Guangrui Zhang Wei Li | 2021 | Journal of Rare Earths2021，39，8： | 6 |
| 3 | Vacuum carburization of 12Cr2Ni4A low carbon alloy steel with lanthanum and cerium ion implantation显示文摘As bearing parts, 12 Cr2 Ni4 A is expected to have high hardness and excellent fatigue strength, so carburizing is employed to improve the inherit properties of 12 Cr2 Ni4 A. However, the traditional carburizing is limited by poor microstructure distribution and low rate of carburizing. The rare earth ion implantation is known to help improving the properties of tribology, corrosion resistance and oxidation resistance of metal. In this article, the RE implantation is employed to assist the carburizing. Lanthanum and cerium ion implantations are initially used to assist 12 Cr2 Ni4 A low pressure vacuum carburization.The microstructure, content of retained austenite, hardness, thickness of layer and carbon diffusion were analyzed by optical microscopy(OM), scanning electron microscopy(SEM), X-ray diffraction(XRD) and Rockwell/Vickers hardness tester, respectively. It was shown that lanthanum and cerium implantations can improve structure of the vacuum carburizing layer, and enhance the uniformity of carbon element distribution on the carburized surface. Meanwhile the RE implantation plays a positive role in promoting the surface hardness and carburized rate. The lanthanum element has more significant effect on surface hardness and content of retained austenite than cerium element. The surface hardness of lanthanum element implanted layer was 62.9 HRC with 9.6% content of retained austenite, while the carburizing rate of cerium implanted layer increased by 12.4%. | Meiling Dong Xiufang Cui Yuhui Zhang Guo Jin Caiwen Yue Xin Zhao Zhaobing Cai Binshi Xu | 2017 | Journal of Rare Earths2017，35，11： | 3 |
| 4 | Blockchain-Based Reliable Fog-Cloud Service Solution for IIoT显示文摘Industrial Internet of things(IIoT)deploys a large number of smart devices to obtain industrial data,which will be transmitted to cloud for analysis to improve industrial productivity.The management of large-scale devices is complicated,and it’s also a challenge to choose a high-quality cloud service for data analysis as the number of service with similar functions increases.To address these issues,we propose a reliable fog-cloud service solution with blockchain-based fog-cloud architecture.In fog layer,we build a management blockchain between fog servers and design a management method for industrial devices;In cloud layer,we construct a service blockchain between cloud service providers to form an open'service market'.Quality of service and reputation based matching algorithm and reputation-based consensus algorithm are designed.The simulation results show correctness and efficiency of algorithms,and validate effectiveness of our proposed solution. | DAI Meiling XU Siya SHAO Sujie GUO Shaoyong QIU Xuesong XIONG Ao | 2021 | Chinese Journal of Electronics2021，30，2： | 3 |
| 5 | Toxic Effects of Three Heavy Metallic Ions on Rana zhenhaiensis Tadpoles显示文摘Heavy metal pollution is widespread in some areas of China and results in contamination of land, water, and air with which all living organisms interact. In this study, we used three heavy metallic ions(Cu2+, Pb2+ and Zn2+) to assess their toxicity effects on mortality, blood biomarker and growth traits(body length and body mass) of Rana zhenhaiensis tadpoles. The results showed that the toxicity levels of the three metallic ions were different when conducted with different experiment designs. For acute toxicity tests, Cu2+ was the most toxic with the highest tadpole mortality. The mortalities of tadpoles showed significant differences among the treatments at the same exposure time endpoints(24, 48, 72 and 96h). Results from repeated measures ANOVA indicated that metallic ion concentration, exposure time and their interactions significantly affected the mortalities of R. zhenhaiensis tadpoles. Also, the toxicity effects of all binary combinations of the three metallic ion treatments showed synergism. The half lethal concentrations(LC50) decreased with increasing exposure time during the experimental period, and the safe concentration(SC) values of Cu2+, Pb2+ and Zn2+ were different from each other. Combined and compared LC50 values with previous data reported, it is suggestes that the toxicity levels of metal pollution to anuran tadpoles should be species-and age-related. For blood biomarker tests, Zn2+ was the most toxic with the highest total frequencies of abnormal erythrocytic nucleus. All three metallic ions caused higher abnormal erythrocytic nucleus compared with control groups. In a chronic toxicity test, Pb2+ was the most toxic with lowest growth traits. Survival rate(except for 18 days), total body length and body mass showed significant differences among the treatments. These findings indicated that tadpoles of R. zhenhaiensis should be as a bioindicator of heavy metals pollution. | Li WEI Guohua DING Sainan GUO Meiling TONG Wenjun CHEN Jon FLANDERS Weiwei SHAO Zhihua LIN | 2015 | Asian Herpetological Research2015，6，2： | 3 |
| 6 | Wet-spinning fabrication of shear-patterned alginate hydrogel microfibers and the guidance of cell alignment显示文摘Native tissue is naturally comprised of highly-ordered cell-matrix assemblies in a multi-hierarchical way,and the nano/submicron alignment of fibrous matrix is found to be significant in supporting cellular functionalization.In this study,a self-designed wet-spinning device appended with a rotary receiving pool was used to continuously produce shear-patterned hydrogel microfibers with aligned submicron topography.The process that the flow-induced shear force reshapes the surface of hydrogel fiber into aligned submicron topography was systematically analysed.Afterwards,the effect of fiber topography on cellular longitudinal spread and elongation was investigated by culturing rat neuron-like PC12 cells and human osteosarcoma MG63 cells with the spun hydrogel microfibers,respectively.The results suggested that the stronger shear flow force would lead to more distinct aligned submicron topography on fiber surface,which could induce cell orientation along with fiber axis and therefore form the cell-matrix dual-alignment.Finally,a multi-hierarchical tissue-like structure constructed by dual-oriented cell-matrix assemblies was fabricated based on this wet-spinning method.This work is believed to be a potentially novel biofabrication scheme for bottom-up constructing of engineered linear tissue,such as nerve bundle,cortical bone,muscle and hepatic cord. | You Yang Jing Sun Xiaolu Liu Zhenzhen Guo Yunhu He Dan Wei Meiling Zhong Likun Guo Hongsong Fan Xingdong Zhang | 2017 | Regenerative Biomaterials2017，4，5： | 2 |
| 7 | Phenolic Profile, Antioxidant Activity and Anti-proliferative Activity of Crabapple Fruits显示文摘To explore the potential of crabapples as functional food, polyphenols in crabapples and ‘Fuji’ apples were extracted, and the phenolic profile,total polyphenols, antioxidant activity and anti-proliferative activity against several human cancer cells were determined. The results indicated that crabapple extracts have more abundant phenols and higher total polyphenols(from 4.46 to 46.63 mg GAE·g-1 DW) compared to ‘Fuji’ apples.Crabapple extracts possessed higher antioxidant activity than apple by DPPH and ABTS analysis. All fruit extracts exhibited inhibitory effects on proliferation in different cancer cells;however, crabapple extracts performed significantly better, with half inhibitory concentration(IC50)values varied from 48.34 μg·m L-1 to 974.81 μg·m L-1 for colon cancer cells SW480, 64.67–1 466.35 μg·m L-1 for stomach cancer cells BGC-803,78.88–910.64 μg·m L-1 for esophageal cancer cells CaEs-17. Besides, the red crabapples had higher antioxidant activity and anti-proliferative activity than yellow fruits. These results showed that crabapples, especially red crabapples, have great potential as a healthy food, as they are rich in phenolic compounds with high antioxidant and anti-proliferative activities to cancer cells. | Meiling Han Guo Li Xiaowei Liu Ai Li Peiqi Mao Pengyuan Liu Houhua Li | 2019 | Horticultural Plant Journal2019，5，4： | 1 |
| 8 | Simultaneous direct analysis of benzimidazole fungicides and relevant metabolites in agricultural products based on multifunction dispersive solid-phase extraction and liquid chromatography–mass spectrometry显示文摘 | Bin Guo Zhiqiang Huang Meiling Wang Xiaoying Wang Ying Zhang Bo Chen Yongjun Li Hongfei Yan Shouzhuo Yao | 2010 | Journal of Chromatography A2010，，29： | 1 |
| 9 | A multicentre randomised trial comparing weekly paclitaxel<ce:hsp sp='0.25'/>+<ce:hsp sp='0.25'/>S-1 with weekly paclitaxel<ce:hsp sp='0.25'/>+<ce:hsp sp='0.25'/>5-fluorouracil for patients with advanced gastric cancer显示文摘 | Dingzhi Huang Yi Ba Jianping Xiong Nong Xu Zhao Yan Zhixiang Zhuang Zhuang Yu Huiping Wan Yang Zhang Ting Deng Rongsheng Zheng Zengqing Guo Chunhong Hu Meiling Wang Zhonghe Yu Yang Yao Jichang Meng | 2013 | European Journal of Cancer2013，，： | 1 |
| 10 | Determination of the active metabolite of prulifloxacin in human plasma by liquid chromatography-tandem mass spectrometry显示文摘 | GUO Lixia QI Meiling JIN Xin | 2006 | J Chromatogr B Analyt Technol Biomed Life Sci2006，832，2： | 1 |
| 11 | Phase Equilibria of the Aqueous Systems Containing Lithium and Carbonate Ions显示文摘1 Introduction Alkaline lakes are widely distributed in the area of the Qinghai-Tibet Plateau.Most of the salt lakes are famous for their high concentration of lithium,potassium,magnesium,boron(Ma,2000).In recent years,as a new energy material,lithium and its compounds are widely used in the new area,such as aerospace industry。 | ZHAO Meiling WANG Shiqiang GUO Yafei DENG Tianlong | 2014 | Acta Geologica Sinica(English Edition)2014，88，S1： | 1 |
| 12 | TCP rebuilding for contentaware request dispatching in Web clusters 显示文摘 | Liu Yuchen Chiang Meiling Guo Lianfeng | 2007 | Software Practice & Experience2007，37，11： | 1 |
| 13 | A Thorough Investigation of the Active Titanium Species in TS‐1 Zeolite by In Situ UV Resonance Raman Spectroscopy显示文摘 | Qiang Guo Keju Sun Zhaochi Feng Guanna Li Meiling Guo Fengtao Fan Can Li | 2012 | Chem Eur J2012，，43： | 1 |
| 14 | Analysis and Enlightenment on Continuation of Spatial Image of Traditional Streets and Lanes in Historical Urban Area:A Case Study of Spatial Design of Traditional Streets and Lanes in Xin’gan South Road of Ganzhou City显示文摘Traditional block of Xin’gan South Road in Ganzhou City is taken as the research object.Using urban design techniques,spatial structure,spatial interface,scale,ratio and spatial node of traditional streets and lanes are controlled and processed,and spatial image is analyzed.Moreover,the strategic transformation proposal is put forward.It promotes the renewal of traditional streets and lanes in urban renewal,and realizes the historical continuation of spatial image of traditional streets and lanes,thereby protecting the historical features of the ancient city. | GUO Song HUANG Meiling LI Zhi | 2020 | Journal of Landscape Research2020，12，6： | 1 |
| 15 | Learning Training in Foreign Language Classroom显示文摘 | Guo Meiling | 2002 | 内蒙古师范大学学报2002，，04： | 1 |
| 16 | Role of Notoginsenoside Rg1 in Improving Spatial Cognitive Ability and Lowering Phosphorylation Level of Tau Protein in AD Model Rats显示文摘[Objectives] To study the effects and mechanism of notoginsenoside Rg1 on the spatial learning and memory and phosphorylated tau protein in the AD( Alzheimer's Disease) model rat. [Methods]The AD model rat was replicated by injection of Aβ_(25-35) in the left lateral ventricles of SD rats. The low dose( 25 mg/kg),middle dose( 50 mg/kg) and high dose( 100 mg/kg) notoginsenoside Rg1 was used for intragastric administration,respectively,two times every day. After 4 weeks,the Morris water maze test was done to detect the learning and memory capacity,and the immunoblotting,immunohistochemical methods were used to detect the changes in the phosphorylation level and distribution of tau protein in hippocampus of the rats. [Results] After the intracerebroventricular injection of Aβ_(25-35),the learning and memory capacity of the model rats was significantly lower than the learning and memory capacity of the normal control rats. The immunoblotting test results showed that the phosphorylation level of tau protein threonine 231 site( Thr231) in hippocampus was significantly increased,and the nonphosphorylation level was significantly decreased. The morphological testing results showed that the phosphorylation level of tau protein Thr231 of AD model rats was increased markedly in region of DG,CA1 and CA3 of the hippocampus. The intervention of the middle dose notoginsenoside Rg1 could significantly improve the learning and memory capacity of the model rats in Morris water maze. The notoginsenoside Rg1 in three different doses could all reduce the phosphorylation level of tau protein Thr231 in the hippocampal DG,CA1,CA3 regions,and there were no significant differences among the three doses. [Conclusions]The notoginsenoside Rg1 could improve Aβ_(25-35)-induced spatial learning and memory impairment of the AD model rats,and decreased the phosphorylation level of tau protein in hippocampus. | Muzhe LI Wenhui WU Zhiping WU Meiling REN Shuxian CHEN Xiaoling GUO Ping WANG Li LIN | 2018 | Medicinal Plant2018，9，2： | 1 |
| 17 | Learning Training in Foreign Language Classroom显示文摘 | Guo Meiling | 2002 | 内蒙古师范大学学报2002，，04： | 1 |
| 18 | On the least signless Laplacian eigenvalue ofsome graphs显示文摘 | Yu Guanglong Guo Shuguang Xu Meiling | 2013 | Linear Algebra Appl2013，26，： | 1 |
| 19 | Chronic accumulation of cadmium and its effects on antioxidant enzymes and malondialdehyde in Oxya chinensis (Orthoptera: Acridoidea)显示文摘 | Yuping Zhang Ge Sun Meiling Yang Haihua Wu Jianzhen Zhang Shaojuan Song Enbo Ma Yaping Guo | 2011 | Ecotoxicology and Environmental Safety2011，，5： | 1 |
| 20 | On the least signless Laplacian eigenvalue ofnon-bipartite unicyclic graphs with both given order and diameter 显示文摘 | Guo Shuguang Xu Meiling Yu Guanglong | 2014 | Ars Combin2014，114，： | 1 |
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