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| 1 | 大白菜AB-81高频再生系统的建立及gusA基因瞬时表达的研究显示文摘以大白菜自交系AB 81的子叶和真叶切块为外植体 ,建立了高频不定芽离体再生系统。在MS附加TDZ 0 .2mg/L ,NAA 2 .0mg/L ,AgNO310mg/L和ABA 0 .2 5mg/L的再生培养基上 ,子叶和真叶的不定芽再生频率分别达到 93.3%和 90 .0 % ,每块外植体的不定芽数达 3~ 6个 ,最多达 2 1个。以EHA10 5/pMOG4 10为载体转化侵染大白菜AB 81的子叶 ,获得较高gusA基因瞬时表达频率的条件为 :子叶预培养 2~ 3d ;侵染的工程菌液的浓度OD 0 .3~ 0 .5;侵染时间 2~ 10min ;共培养时间 2~ | 王火旭 王关林 王晓岩 方宏筠 贾士荣 Tang Yixiong 唐益雄 魏毓棠 | 2001 | 园艺学报2001，28，1： | 29 |
| 2 | Highly efficient induction and long-term maintenance of multipotent cardiovascular progenitors from human pluripotent stem cells under defined conditions显示文摘心血管的祖先房间( CVPC )源于人的 pluripotent 干细胞( hPSCs ),包括人的胚胎的干细胞( hESCs )和人的导致的 pluripotent 干细胞( hiPSCs ),为心血管的开发和心疾病的基于房间的治疗的学习的抓住伟人诺言,但是他们的应用被困难在他们的有效产生和稳定的维护质问。这研究试图由关键早发展的小径在人的心血管的说明和 CVPC 自强包含了的 modulating 为柔韧的产生和导出 hPSC 的 CVPC 的稳定的繁殖开发化学上定义的系统。此处,我们报导那骨头的联合形态基因的蛋白质 4 (BMP4 ) ,肝糖 synthase kinase 3 (GSK3 ) 禁止者 CHIR99021 和维生素酸是足够的很快变换单层有教养的 hPSCs 包括 hESCs 和 hiPSCs,调节进在在喂免费、没有浆液的文化下面的化学上定义的媒介的同类的 CVPC。在喂免费、没有浆液的条件下面稳定地自我更新、在 10 7-fold 上膨胀的这些 CVPC 从 BMP, GSK3 和 Activin/Nodal 小径的导致区别的信号是什么时候,同时消除了。而且,这些 CVPC 在 vitro 展出了 CVPC,包括 cardiomyocytes 产生主要的心血管的系的保留的潜力,光滑的肌肉房间和 endothelial 房间的期望的染色体宽的分子的特征,并且是在 vivo 的 non-tumorigenic。总的来说,这里报导的确定的系统允许有效产生和导出 hPSC 的 CVPC 的稳定的维护,它代表一个强大的工具学习早胚胎的心血管的开发并且为心肌的再生药提供房间的潜在地安全的来源。 | Nan Cao He Liang Jijun Huang Jia Wang Yixiong Chen Zhongyan Chen Huang-Tian Yang | 2013 | Cell Research2013，23，9： | 12 |
| 3 | Microstructural Evolution of Pearlite in Eutectoid Fe-C Alloys during Severe Cold Rolling显示文摘The microstructural evolution of pearlite during severe cold rolling in Fe-0.8C binary alloy and Fe-1Mn-0.8C ternary alloys was investigated by using SEM, TEM and XRD etc. The results show that the deformed pearlite consists of irregularly bent lamella, coarse lamella with shear-band and fine lamella. As the rolling reduction increases, the proportion of fine lamella increases. The strong plastic deformation, amorphization and dissolution of cementite take place during the severe cold rolling. The maximum carbon content in ferrite reaches 0.15 mass% after 90% cold rolling. | WantangFU YiXIONG JunZHAO YongLI T.Furuhara T.Maki | 2005 | Journal of Materials Science & Technology2005，21，1： | 9 |
| 4 | Optimization and control of a reactive distillation process for the synthesis of dimethyl carbonate显示文摘Dimethyl carbonate is an environmentally benign and biodegradable chemical.Based on integration of reactive distillation and pressure-swing distillation technologies,a novel process for synthesis of dimethyl carbonate through transesterification with propylene carbonate and methanol has been developed by Huang et al.In this work,the optimization of this process was performed by minimizing the total TAC.The results show that the optimal design flowsheet can save energy consumption by 18.6% with the propylene carbonate conversion of 99.9%.Then,an effective plant-wide control structure for the process was developed.Dynamic simulation results demonstrate that the temperature/flow rate cascade control plus with simple temperature control can keep not only product purity but also the conversion of the reactant at their desired values in the face of the disturbance in reactant feed flow rate and feed composition. | Zhixian Huang Yixiong Lin Xiaoda Wang Changshen Ye Ling Li | 2017 | Chinese Journal of Chemical Engineering2017，25，8： | 8 |
| 5 | Product Modular Design Incorporating Preventive Maintenance Issues显示文摘Traditional modular design methods lead to product maintenance problems, because the module form of a system is created according to either the function requirements or the manufacturing considerations. For solving these problems, a new modular design method is proposed with the considerations of not only the traditional function related attributes, but also the maintenance related ones. First, modularity parameters and modularity scenarios for product modularity are defined. Then the reliability and economic assessment models of product modularity strategies are formulated with the introduction of the effective working age of modules. A mathematical model used to evaluate the difference among the modules of the product so that the optimal module of the product can be established. After that, a multi-objective optimization problem based on metrics for preventive maintenance interval different degrees and preventive maintenance economics is formulated for modular optimization. Multi-objective GA is utilized to rapidly approximate the Pareto set of optimal modularity strategy trade-offs between preventive maintenance cost and preventive maintenance interval difference degree. Finally, a coordinate CNC boring machine is adopted to depict the process of product modularity. In addition, two factorial design experiments based on the modularity parameters are constructed and analyzed. These experiments investigate the impacts of these parameters on the optimal modularity strategies and the structure of module. The research proposes a new modular design method, which may help to improve the maintainability of product in modular design. | GAO Yicong FENG Yixiong TAN Jianrong | 2016 | Chinese Journal of Mechanical Engineering2016，29，2： | 8 |
| 6 | Preparation and shaping of solid acid SO_4^(2-)/TiO_2 and its application for esterification of propylene glycol monomethyl ether and acetic acid显示文摘The solid acid SO_4^(2-)/TiO_2 was prepared by immersion method and applied for synthesis of propylene glycol methyl ether acetate(PMA) through esterification reaction of propylene glycol monomethyl ether(PM)and acetic acid(HAc). The optimal catalyst preparation condition was determined by orthogonal analysis of parameters in a five-factor and four-level test. The obtained solid acid catalysts were characterized in detail by means of X-ray powder diffraction, thermogravimetry, pyridine adsorbed IR analysis, scanning electron microscopy, and BET surface area method. Synthesis of PMA was studied in this paper through experimental investigation of reaction conditions such as temperature, molar ratio of reactants, catalyst dosage and agitation speed. Based on its possible reaction mechanism, a pseudo-homogeneous kinetic model was established and its activation energies E_a^+ and E_a^-,65.68 × 10~3J·mol^(-1) and 57.78 × 10~3J·mol^(-1), were estimated. To prepare shaped solid acid catalyst SO_4^(2-)/TiO_2, the shaping method of impregnation–shaping–impregnation was applied. The optimal molding formulation of solid acid catalyst, obtained from the orthogonal test, was found to be binder 7 wt%, reinforcing agent 20 wt%, pore forming material 2.5 wt%, and lubricant 4 wt%.The results of performance test of catalyst demonstrated that the shaped solid acid catalyst exhibited high activity and stability. | Zhixian Huang Yixiong Lin Ling Li Changshen Ye Ting Qiu | 2017 | Chinese Journal of Chemical Engineering2017，25，9： | 8 |
| 7 | Non-axisymmetric Flow Characteristics in Centrifugal Compressor显示文摘The flow field distribution in centrifugal compressor is significantly affected by the non-axisymmetric geometry structure of the volute.The experimental and numerical simulation methods were adopted in this work to study the compressor flow field distribution with different flow conditions.The results show that the pressure distribution in volute is characterized by the circumferential non-uniform phenomenon and the pressure fluctuation on the high static pressure zone propagates reversely to upstream,which results in the non-axisymmetric flow inside the compressor.The non-uniform level of pressure distribution in large flow condition is higher than that in small flow condition,its effect on the upstream flow field is also stronger.Additionally,the non-uniform circumferential pressure distribution in volute brings the non-axisymmetric flow at impeller outlet.In different flow conditions,the circumferential variation of the absolute flow angle at impeller outlet is also different.Meanwhile,the non-axisymmetric flow characteristics in internal impeller can be also reflected by the distribution of the mass flow.The high static pressure region of the volute corresponds to the decrease of mass flow in upstream blade channel,while the low static pressure zone of the volute corresponds to the increase of the mass flow.In small flow condition,the mass flow difference in the blade channel is bigger than that in the large flow condition. | WANG Leilei LAO Dazhong LIU Yixiong YANG Ce | 2015 | Journal of Thermal Science2015，24，4： | 7 |
| 8 | Simulation model of self-organizing pedestrian movement considering following behavior显示文摘在本文中一种新的力学模型被引入到社会力模型中,用来仿真相向行人流中的跟随行为。这种跟随行为指的是行人通过接近同向行人以避免与反向行人冲突的行为。新的力学模型类似于一种引力模型,在建模过程中考虑了行人的视野范围、自身的运动状态、被跟随行人的运动状态等因素。我们利用新的力学模型对相向行人流进行了仿真,研究了跟随行为对渠化现象、行人间冲突以及双向通道通行效率的影响。仿真结果表明:跟随行为能促进渠化现象形成,并能起到缓解相向行人流拥堵的作用;跟随行为具有降低相向行人流冲突次数的作用,这种作用在入口流量较低时并不明显,但随着行人流量的升高而增强。跟随行为能够提高双向通道的通行效率,并且跟随行为的强度参数越大通道的通行效率越高。 | Zhilu YUAN Hongfei JIA Mingjun LIAO Linfeng ZHANG Yixiong FENG Guangdong TIAN | 2017 | Frontiers of Information Technology & Electronic Engineering2017，18，8： | 7 |
| 9 | Hot corrosion behavior of nanostructured Gd2O3 doped YSZ thermal barrier coating in presence of Na2SO4+V2O5 molten salts显示文摘Nickel-based superalloy DZ125 was first sprayed with a NiCrAlY bond coat and followed with a nanostructured 2 mol% Gd_2O_3-4.5 mol% Y_2 O_3-ZrO_2(2 GdYSZ) topcoat using air plasma spraying(APS). Hot corrosion behavior of the as-sprayed thermal barrier coatings(TBCs) were investigated in the presence of 50 wt%Na_2SO_4 + 50 wt% V_2O_5 as the corrosive molten salt at 900 ℃ for 100 h. The analysis results indicate that Gd doped YVO_4 and m-ZrO_2 crystals were formed as corrosion products due to the reaction of the corrosive salts with stabilizers(Y_2O_3, Gd_2O_3) of zirconia. Cross-section morphology shows that a thin layer called TGO was formed at the bond coat/topcoat interface. After hot corrosion test, the proportion of m-ZrO_2 phase in nanostructured 2GdYSZ coating is lower than that of nano-YSZ coating. The result reveals that nanostructured 2GdYSZ coating exhibits a better hot corrosion resistance than nano-YSZ coating. | Yixiong Wang Chungen Zhou | 2017 | Progress in Natural Science:Materials International2017，27，4： | 7 |
| 10 | Using in situ REE analysis to study the origin and diagenesis of dolomite of Lower Paleozoic,Tarim Basin显示文摘In situ REE concentrations of various dolomites from Tarim Basin were obtained by LA-ICP-MS analysis,and the data were normalized to standard seawater(Seawater Normalized=SWN).Most of the samples have a ΣREE range of less than 20 ppm.All samples show similar REESWN distributions with heavy REE depletion,and positive Ce anomaly,which indicates that they have the same dolomitization fluids(seawater).According to the origin and diagenetic process of dolomite,two types of dolomite are determined and described as follows:1) syndepositional dolomite,with the highest REE concentrations(more than 20 ppm),the cores of which are more enriched in REE compared with their cortexes,indicating that they underwent the dolomitization of calcareous sediments by hypersaline and subsequent diagenesis decreased the REE content of the cortex because of the low REE concentration of the diagenetic fluids;2) diagenetic dolomite,which can be subdivided into four groups.(1) burial dolomite which has higher REE concentrations than limestone,but lower than syndepositional dolomite.This shows that pore fluids with high salinity dolomitized the pre-existing limestone;(2) void filling dolomite which has the similar REE patterns with the matrix dolomite.In addition,the Eu anomaly is not obvious,suggesting that the dolomitization fluids originated from the diagenetic fluids;(3) recrystallized dolomite,whose REE concentration was obviously decreased,indicating that the REE concentration was decreased during the recrystallization processes;and(4) hydrothermal altered void-filling dolomite,which has the lowest REE concentration,but obvious positive Eu anomaly,reflecting its hydrothermal activity related origin.Thus,the diverse REE signatures,which were recorded in different dolomites,retain the information of their formation conditions and subsequent diagenetic processes.In situ REE analysis of dolomite is an effective probe into the origin and diagenetic process of dolomite. | WANG XiaoLin JIN ZhiJun HU WenXuan ZHANG JunTao QIAN YiXiong ZHU JingQuan LI Qing | 2009 | Science China Earth Sciences2009，52，5： | 7 |
| 11 | Effect of Gd_2O_3 on the microstructure and thermal properties of nanostructured thermal barrier coatings fabricated by air plasma spraying显示文摘The nanostructured 4–8 mol% Gd_2O_3-4.5 mol% Y_2O_3-ZrO_2(4–8 mol% Gd YSZ) coatings were developed by the atmospheric plasma spraying technique. The microstructure and thermal properties of plasmasprayed 4–8 mol% Gd YSZ coatings were investigated. The experimental results indicate that typical microstructure of the as-sprayed coatings were consisted of melted zones, nano-zones, splats, nano-pores,high-volume spheroidal pores and micro-cracks. The porosity of the 4, 6 and 8 mol% Gd YSZ coatings was about 9.3%, 11.7% and 13.3%, respectively. It was observed that the addition of gadolinia to the nano-YSZ could significantly reduce the thermal conductivity of nano-YSZ. The thermal conductivity of Gd YSZ decreased with increasing Gd_2O_3 addition. And the reduction in thermal conductivity is mainly attributed to the addition of Gd_2O_3, which results in the increase in oxygen vacancies, lattice distortion and porosity. | Yixiong Wang Chungen Zhou | 2016 | Progress in Natural Science:Materials International2016，26，4： | 6 |
| 12 | An Airfoil Parameterization Method for the Representation and Optimization of Wind Turbine Special Airfoil显示文摘A new airfoil shape parameterization method is developed, which extended the Bezier curve to the generalized form with adjustable shape parameters. The local control parameters at airfoil leading and trailing edge regions are enhanced, where have significant effect on the aerodynamic performance of wind turbine. The results show this improved parameterization method has advantages in the fitting characteristics of geometry shape and aerodynamic performance comparing with other three common airfoil parameterization methods. The new parameterization method is then applied to airfoil shape optimization for wind turbine using Genetic Algorithm(GA), and the wind turbine special airfoil, DU93-W-210, is optimized to achieve the favorable Cl/Cd at specified flow conditions. The aerodynamic characteristic of the optimum airfoil is obtained by solving the RANS equations in computational fluid dynamics(CFD) method, and the optimization convergence curves show that the new parameterization method has good convergence rate in less number of generations comparing with other methods. It is concluded that the new method not only has well controllability and completeness in airfoil shape representation and provides more flexibility in expressing the airfoil geometry shape, but also is capable to find efficient and optimal wind turbine airfoil. Additionally, it is shown that a suitable parameterization method is helpful for improving the convergence rate of the optimization algorithm. | LIU Yixiong YANG Ce SONG Xiancheng | 2015 | Journal of Thermal Science2015，24，2： | 6 |
| 13 | SELF-ORGANIZED SEMANTIC FEATURE EVOLUTION FOR AXIOMATIC DESIGN显示文摘Aiming at the problem existing in the computer aided design process that how to express the design intents with high-level engineering terminologies,a mechanical product self-organized semantic feature evolution technology for axiomatic design is proposed, so that the constraint relations between mechanical parts could be expressed in a semantic form which is more suitable for designers.By describing the evolution rules for semantic constraint information,the abstract expression of design semantics in mechanical product evolution process is realized and the constraint relations between parts are mapped to the geometric level from the semantic level;With semantic feature relation graph,the abstract semantic description,the semantic relative structure and the semantic constraint information are linked together;And the methods of semantic feature self-organized evolution are classified.Finally,combining a design example of domestic high-speed elevator,how to apply the theory to practical product development is illustrated and this method and its validity is described and verified.According to the study results,the designers are able to represent the design intents at an edvanced semantic level in a more intuitional and natural way and the automation,recursion and visualization for mechanical product axiomatic design are also realized. | HAO He FENG Yixiong TAN Jianrong XUE Yang | 2008 | Chinese Journal of Mechanical Engineering2008，21，2： | 5 |
| 14 | ALGORITHM AND IMPLEMENTATION OF AUTO-SEARCHING WELD LINE FOR WELDING MOBILE ROBOT显示文摘为焊接活动机器人的寻找汽车的焊接线的一个算法被介绍。寻找汽车的焊接线是机器人罐头自动地在焊接前根据焊接沟的特征认出一条焊接沟,然后以准备的需要的地位调整自己姿势因为也就是,焊接它是机器人独立地自己排列到焊接缝接的中心的一个过程。第一,与寻找汽车的焊接线的功能焊接活动机器人的配置被介绍,然后,算法和实现寻找 ofauto 焊接线根据机器人的 kinematics 模型被介绍,最后,轨道在寻找汽车的焊接线之中计划详细被调查。发达焊接活动机器人成功地装的实验结果 hows 在焊接前实现 auto-searchingweld 线的任务,追踪错误精确能被控制到近似± 1 .5 公里,并且满足实际焊接的要求工程。 | ZHANG Ke Lü Xueqin WU Yixiong L0U Songnian | 2006 | Chinese Journal of Mechanical Engineering2006，19，2： | 4 |
| 15 | MicroRNA-140 regulates cell growth and invasion in pancreatic duct adenocarcinoma by targeting iASPP显示文摘MicroRNAs 是从在经由绑定调整蛋白质表示水平到 mRNA 起重要作用的 RNA 发卡结构处理的 22 核苷酸 RNA,也压制它的翻译或加快它的降级。在人,他们调整很编码蛋白质的基因,包括在癌症和另外的疾病重要的基因。在这研究, microRNA-140 (miR-140 ) 的表示被表明显著地在胰腺的管腺癌标本和房间线被压制,与他们的邻近的正常纸巾相比。在生物信息学分析的帮助下, p53 (iASPP ) 的刺激 apoptosis 蛋白质的禁止者被识别是 miR-140 的一个直接目标,并且酶记者实验证实了这发现。miR-140 的 Overexpression 减少 iASPP, Np63, MMP2,和 MMP9 的蛋白质表情。PANC-1 房间的生长和侵略被 miR-140 的 overexpression 在 vitro 稀释。PANC-1 房间线上的 miR-140 的镇压效果能被 iASPP 的用手的 overexpression 部分外面平衡。首先,这些调查结果提供了卓见进 miR-140 的功能的机制,建议 miR-140/iASPP 轴可以防碍 proliferative 和胰腺的管腺癌房间的侵略性质,并且显示 miR-140 能是为胰腺的管腺癌的一个潜在的治疗学的目标。 | Shuai Liang Xuejun Gong Gewen Zhang Gengwen Huang Yebin Lu Yixiong Li | 2016 | Acta Biochimica et Biophysica Sinica2016，48，2： | 4 |
| 16 | Early dolomitisation of the Lower-Middle Ordovician cyclic carbonates in northern Tarim Basin, NW China显示文摘High-frequency metre-scale cycles are present within the Lower-Middle Ordovician carbonate successions in northern Tarim Basin, NW China. These metre-scale cycles were variably dolomitised from top to bottom. Three types of replacive dolomites were recognised, including dololaminite(very finely to finely crystalline, planar-s to nonplanar-a dolomite;type-1), patterned dolomite(finely crystalline, planar-s dolomite; type-2), and mottled dolomite(finely to medium crystalline,nonplanar-a(s) dolomite; type-3). Petrographic evidence indicate these dolomites were primarily deposited in supratidal to restricted subtidal environments, and formed in near-surface to shallow burial realms. Geochemically, all types of dolomites have similar δ13C and 87Sr/86 Sr ratios comparable to calcite precipitated in equilibrium with the Early-Middle Ordovician seawater. These geochemical attributes indicate that these dolomites were genetically associated and likely formed from connate seawater-derived brines. Of these, type-1 dolomite has δ18O values(.4.97‰ to.4.04‰ VPDB) slightly higher than those of normal seawater dolomite of the Early-Middle Ordovician age. Considering the absence of associated evaporites within type-1 dolomite, its parental fluids were likely represented by slightly evaporated(i.e., mesosaline to penesaline) seawater with salinity below that of gypsum precipitation. More depleted δ18O values(.7.74‰ to.5.20‰ VPDB) of type-2 dolomite and its stratigraphic position below type-1 dolomite indicate the generation of this dolomite from mesosaline to penesaline brines at higher temperatures in near-surface to shallow burial domains. Type-3 dolomite yields the most depleted δ18O values(–9.30‰to –7.28‰ VPDB), pointing to that it was most likely formed from coeval seawater-derived brines at highest temperatures in a shallow burial setting. There is a downward decreasing trend in δ18O values from type-1 through type-2 to type-3 dolomites, and in abundance of dolomites, indicating that the dolomitising fluids probably migrated downward from above and persisted into shallow burial conditions. | GUO Chuan CHEN DaiZhao DONG ShaoFeng QIAN YiXiong LIU CunGe | 2017 | Science China Earth Sciences2017，60，7： | 3 |
| 17 | REE Compositions of Lower Ordovician Dolomites in Central and North Tarim Basin,NW China:A Potential REE Proxy for Ancient Seawater显示文摘摘要:在中央、北的 Tarim 盆的更低的奥陶纪白云石的稀土元素元素作文被学习。大多数白云石样品被泥土矿物质差不多污染。他们的稀土元素元素作文因而被改变了,出现像海水并且 non-seawater-like 特征。在 REE 数据被使用以前,泥土污染应该被处理。通过 ICPMS 和 ICP-AES 分析, REE 特征很好被记录。泥土污染是显微镜的调查,踪迹元素和 REE 内容决定的份量上。至少在 Tarim 盆,当他们的全部的 LREE 内容是不到 3times10 时,白云石被认为纯 ? 6。通过比较,纯白云石在 REE 模式显示出类似但是在 REE 的差别与共存的纯石灰石满足,它显示化成白云石可以稍微改变 REE 作文。不过,变化是无论什么,纯白云石可以为奥陶纪海水充当一个潜在的 REE 代理,它将为缺乏石灰石的古老的巨大的白云石阶层是重要的。 | ZHANG Xuefeng HU Wenxuan JIN Zhijun ZHANG Juntao QIAN Yixiong ZHU Jingquan ZHU Dongya WANG Xiaolin XIE Xiaomin | 2008 | Acta Geologica Sinica(English Edition)2008，82，3： | 3 |
| 18 | TECHNOLOGY AND APPLICATION OF PRODUCT EVOLUTIONARY DESIGN BASED ON CONFIGURATION IN MASS CUSTOMIZATION MODE显示文摘Product customization has been recognized as an effective means to implement mass cus-tomization (MC). A new theory and method for MC-oriented evolutionary design of configuration product is presented based on the study of developing law of evolutionary design in integrated envi-ronment, which focuses on the innovation and reuse properties of configuration product. The key technologies for general requirement modeling in quick response to customer requirement, multi-level stepwise configuration optimization driven by customer requirement and evolutionary deduction of product variable structure based on configuration association are thoroughly investigated. The suc-cessful application of the presented method in the development of real-life products demonstrates its utility, flexibility and robusticity. | FENG Yixiong CHENG Jin TAN Jianrong ZHENG Bing WEI Zhe | 2007 | Chinese Journal of Mechanical Engineering2007，20，3： | 3 |
| 19 | Effect of electromagnetic stirring on the microstructure and wear behavior of iron-based composite coatings显示文摘The effect of electromagnetic stirring on the microstructure and wear behavior of coatings has been investigated. A series of iron-based coatings were fabricated by the plasma-transferred arc cladding process by applying different magnetic field currents. The microstructure and wear resistance of the composite coatings were characterized by scanning electron microscope (SEM), energy dispersive X-ray analysis (EDAX), X-ray diffraction (XRD), and wet sand rubber wheel abrasion tester. The experimental re- sults showed that the microstructure of the coatings was mainly the γ-Fe matrix and (Cr, Fe)7C3 carbide reinforced phase. The coatings were metallurgically bonded to the substrate. With increasing magnetic field current, the amount of the block-like (Cr, Fe)7C3 carbide reinforced phase increased at first, reached a local maximum, and then decreased sharply. When the magnetic field current reached 3 A, the block-like (Cr, Fe)7C3 carbides with high volume fraction were uniformly distributed in the matrix and the coating displayed a high microhardness and an excellent wear resistance under the wear test condition. | Jiangbo Cheng Binshi Xu Xiubing Liang Yixiong Wu Zhengjun Liu | 2008 | Journal of University of Science and Technology Beijing2008，15，4： | 3 |
| 20 | Product Model Evolvement and Configuration Knowledge Reuse Method显示文摘Configuration knowledge is a dynamic information set which is evolving and enriching on and on. Product model is the instantiation of configuration knowledge and the evolution of configuration knowledge is the essential inherent reason which causes the models dynamic evolvement. In the traditional model evolvement process, the inheriting and reuse of configuration knowledge was always ignored. Aim at solving the above problem, the multistage rhombus evolution mode of configuration knowledge is discussed in this paper. The product model based on configuration knowledge is put forward in different levels to achieve the models dynamic evolvement and automatic upgrading. The evolving configuration knowledge drives the product model to evolve directly according to the rule of up-layer evolvement. Furthermore, a new configuration knowledge reuse and optimization technology is presented to inheriting and reuse the foregone configuration knowledge in the course of model evolvement. At last, the air separation equipment which is related with the project is taken as an example to illuminate that the presented model evolvement and configuration knowledge reuse technology are validity and practical. | WEI Wei FENG Yixiong TAN Jianrong | 2009 | Chinese Journal of Mechanical Engineering2009，22，6： | 3 |
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