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Electrical discharge and arc milling with automatic tracking of optimal flushing direction:A novel high-efficiency compound machining method

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Chinese Journal of Aeronautics 2024年第3期37卷 351-364页

作者： xinlei wu Yonghong LIU Pengxin ZHANG Liang QI Dege LI Chi MA Renjie JI College of Mechanical and Electronic Engineering China University of Petroleum(East China)Qingdao 266580China School of Mechanical and Power Engineering Nanjing Tech UniversityNanjing 211816China

The arc milling method has the advantages of high machining efficiency and low cost and is independent of the strength and hardness of machined ***,frequent electrode back-offs and the risk of workpiece burning may occur if erosion products are not removed *** this study,it was found that the flushing method of the working medium had a significant impact on the machining performance of arc *** on this,a novel highefficiency compound machining method of electrical discharge and arc milling with automatic tracking of the optimal flushing direction was *** automatic tracking optimizer for external working medium injection was designed to determine the optimal external flushing direction according to the feed *** influence of flushing methods,working mediums,and machining parameters on the machining efficiency,tool electrode wear rate,machining error,and surface integrity of titanium alloys were *** results indicated that better machining performance and environmental friendliness were achieved using the compound flushing method of outer compressed air and inner deionized ***,the automatic tracking flushing method in the opposite direction of the feed direction showed superior results compared to other *** material removal rate with the opposite direction injection could be increased up to 1.62 times that of the same direction,and the relative electrode wear rate could be reduced by 14.76%.This novel method has broad application prospects for machining parts with difficult-to-cut materials in aerospace and military industries.

关键词： Arc milling Dielectric Difficult-to-cut materials Electric discharge machining Erosion Material removal rate

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A novel angiography-based computational modelling for assessing the dynamic stress and quantitative fatigue fracture risk of the coronary stents immediately after implantation: Effects of stent materials, designs and target vessel motions

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Medicine in Novel Technology and Devices 2022年第2期14卷 31-38页

作者： xinlei wu Mattia Lunardi Ahmed Elkoumy Jiayue Huang Jing Kan Shaoliang Chen Shengxian Tu Shanghai Med-X Engineering Research Center Shanghai Jiao Tong UniversityShanghaiChina Institute of Cardiovascular Development and Translational Medicine The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical UniversityWenzhouZhejiangChina Department of Cardiology National University of IrelandGalway(NUIG)GalwayIreland Division of Cardiology Nanjing First HospitalNanjing Medical UniversityNanjingChina Med-X Research Institute Shanghai Jiao Tong UniversityShanghaiChina

Fluctuating stress on the implanted coronary stents within cardiac cycle is an important mechanism of fatigue fracture,which is associated with in-stent restenosis and stent *** developed a novel computational modelling to calculate the dynamic stress of stents based on the time sequence angiography immediately after *** groups of patient-specific cases(one same stent design treated in 4 different coronary arteries and one same artery actually/virtually implanted one stent with 3 different designs)were performed the dynamic stress analysis by this computational modelling and subsequently assessed the fatigue fracture risk by Goodman *** motion of target arteries significantly impacts on distribution of the stress and the risk of stent fracture,particularly in the site of hinge *** the location of stent stress concentration in the obtuse marginal artery and the“unsafe”region in the inverse fatigue safety factor contour co-registered with the position of complete transverse fracture 13 months later after *** stents with different designs had the same location of highest stress concentration at the hinge motion site of the actually/virtually treated *** strength stent materials are significantly lower the risk of stent fracture rather than stent *** new computational modelling might be a useful tool in assessment of fracture risk of the implanted stent and in optimizing new design of dedicated stent treated specific coronary arteries and mechanical properties in vivo of bioresorbable scaffold during degradation process.

关键词： Coronary angiography Dynamic stress Superficial wall strain Fatigue analysis Cardiac cycle Cardiovascular biomechanics

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Efficient Preparation of Nanoparticle-Reinforced Nickel-based Composite Coating with Highly Preferred(220)Orientation

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Chinese Journal of Mechanical Engineering 2020年第6期33卷 187-204页

作者： Renjie Ji Hui Jin Yonghong Liu Tiancong Dong Fan Zhang Lilong Zhao xinlei wu Qiang Sun Peng Liu Hang Dong Chi Ma Dege Li Baoping Cai College of Mechanical and Electronic Engineering China University of Petroleum(East China)Qingdao266580China Key Laboratory of Unconventional Oil&Gas Development Ministry of EducationChina University of Petroleum(East China)Qingdao266580China

Nanoparticle-reinforced metal matrix composite coatings have significant potential in mechanical part surface strengthening owing their excellent mechanical *** paper reports a phenomenon in which the grain orientation gradually evolves to(220)as the deposition current density increases when preparing nanoparticle-reinforced nickel-based composite coatings through jet electrodeposition(JED).During the preparation of the Ni-SiC composite coatings,the deposition current density increased from 180 A/dm2 to 220 A/dm2,and TC(220)gradually increase from 41.4%to 97.7%.With an increase of TC(220),the self-corrosion potential increases from−0.575 to−0.477 V,the corrosion current density decreases from 9.52μA/cm^2 to 2.76μA/cm^2,the diameter of the corrosion pits that after 10 days of immersion in a 3.5 wt%NaCl solution decreases from 278–944 nm to 153–260 nm,and the adhesion of the coating increases from 24.9 N to 61.6 *** a conventional electrodeposition(CED),the Ni-SiC composite coating using JED has the advantages of a smooth surface morphology,high corrosion resistance,and strong adhesion,which are more obvious with an increase in TC(220).

关键词： Jet electrodeposition Composite coating Preferred orientation Adhesion force Corrosion resistance

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Synthesis and Modulation of Low-Dimensional Transition Metal Chalcogenide Materials via Atomic Substitution

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Nano-Micro Letters 2024年第9期16卷 49-94页

作者： Xuan Wang Akang Chen xinlei wu Jiatao Zhang Jichen Dong Leining Zhang Key Laboratory of Cluster Science Ministry of Education of ChinaBeijing Key Laboratory of Photoelectronic and Electrophonic Conversion MaterialsSchool of Chemistry and Chemical EngineeringBeijing Institute of TechnologyBeijing 100081People’s Republic of China Beijing National Laboratory for Molecular Sciences Key Laboratory of Organic SolidsInstitute of Chemistry Chinese Academy of SciencesBeijing 100190People’s Republic of China

In recent years,low-dimensional transition metal chalcogenide(TMC)materials have garnered growing research attention due to their superior electronic,optical,and catalytic properties compared to their bulk *** controllable synthesis and manipulation of these materials are crucial for tailoring their properties and unlocking their full potential in various *** this context,the atomic substitution method has emerged as a favorable *** involves the replacement of specific atoms within TMC structures with other elements and possesses the capability to regulate the compositions finely,crystal structures,and inherent properties of the resulting *** this review,we present a comprehensive overview on various strategies of atomic substitution employed in the synthesis of zero-dimensional,one-dimensional and two-dimensional TMC *** effects of substituting elements,substitution ratios,and substitution positions on the structures and morphologies of resulting material are *** enhanced electrocatalytic performance and photovoltaic properties of the obtained materials are also provided,emphasizing the role of atomic substitution in achieving these ***,challenges and future prospects in the field of atomic substitution for fabricating low-dimensional TMC materials are summarized.

关键词： Transition metal chalcogenides Atomic substitution Ion exchange Low-dimensional materials Controllable synthesis

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Synthesis of cationic styrene-acrylic acid ester copolymer emulsion for paper sizing

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Journal of Bioresources and Bioproducts 2016年第1期1卷 36-41页

作者： xinlei wu Youjia Cui Yi Jing Joseph Mosseler Jiangsu Provincial Key Lab of Pulp and Paper Science and Technology Nanjing Forestry UniversityNanjing210037China Department of Chemical Engineering&Limerick Pulp and Paper Centre University of New BrunswickFrederictonNew BrunswickCanadaE3B 5A3

Surface sizing is an effective way to increase paper’s water-resistance and *** purpose of this study was to study synthesis process to develop an efficient cationic styrene-acrylic acid ester emulsion(SAE)for the surface sizing of *** methacrylate methyl chloride(DMC)was used as the cationic monomer,and cationic starch or native starch was used as the emulsion stabilizer to copolymerize with styrene and butyl *** results indicated that the SAE synthesized with cationic starch and DMC had a high cationic charge density and a high DMC conversion *** sized with the cationic SAE had higher surface strength and lower Cobb value than the paper sized with other surface sizing agents such as,anionic SAE,and cationic or oxidized *** electron micrographs revealed that the paper sized with a combination of oxidized starch and cationic SAE had smoother surface morphology when compared to the paper sized with oxidized starch alone,or with oxidized starch and anionic SAE.

关键词： Surface sizing agent Synthesis Polymer Styrene Butyl acrylate Cationic modification Paper

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中国和美国:全球化时代昆曲的发展

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文艺研究 2007年第3期 86-99页

作者：吴新雷白先勇南京大学美国圣塔芭芭拉加州大学

为纪念明代戏曲大家汤显祖逝世390周年,苏州昆剧院青春版《牡丹亭》剧组在旅美学人白先勇教授的统筹下,于2006年9月到美国巡回演出。恰好南京大学吴新雷教授应柏克莱、洛杉矶加州大学之邀,赴美参加《牡丹亭》的学术研讨会。本刊编辑部... 详细信息

为纪念明代戏曲大家汤显祖逝世390周年,苏州昆剧院青春版《牡丹亭》剧组在旅美学人白先勇教授的统筹下,于2006年9月到美国巡回演出。恰好南京大学吴新雷教授应柏克莱、洛杉矶加州大学之邀,赴美参加《牡丹亭》的学术研讨会。本刊编辑部特邀吴新雷先生访问了白先勇先生,就昆曲在全球化时代“走出去”的国际动态及昆曲艺术的发展等课题,进行了多次对谈。

关键词：中国戏曲史昆曲艺术全球化时代《中国昆剧大辞典》美国南京大学中文系《两宋文学史》《牡丹亭》

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响应面试验优化植物甾醇超声乳化工艺及其乳化稳定性

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食品科学 2016年第6期37卷 20-25页

作者：陈红邬欣蕾王大为吉林农业大学食品科学与工程学院吉林长春130118

采用超声乳化法,以蔗糖酯为乳化剂,通过单因素试验和响应面分析,对植物甾醇超声乳化的工艺条件进行研究,结果表明:超声功率330 W、超声时间35 min、植物甾醇加入量0.53%、超声频率28 k Hz、超声温度30℃、蔗糖酯质量分数6%条件下,植物... 详细信息

采用超声乳化法,以蔗糖酯为乳化剂,通过单因素试验和响应面分析,对植物甾醇超声乳化的工艺条件进行研究,结果表明:超声功率330 W、超声时间35 min、植物甾醇加入量0.53%、超声频率28 k Hz、超声温度30℃、蔗糖酯质量分数6%条件下,植物甾醇乳化液吸光度为1.57,吸光度与理论预测值基本一致。对超声乳化法与水浴乳化法制备的植物甾醇乳化液的稳定性进行评价,并采用倒置显微镜观察植物甾醇乳化液的粒径大小及形态,结果表明:超声乳化法制备的植物甾醇乳化液稳定性更好,粒径较小且更均匀。

关键词：植物甾醇超声乳化稳定性响应面

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电力营销大数据下的用电客户精准营销研究

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电力系统装备 2024年第5期 161-163页

作者：吴鑫蕾国网陕西电力公司延安供电公司陕西延安716099

大数据技术逐渐渗透到电力领域,为电力营销提供了全新的技术指引,电力营销可充分借助于大数据技术优势,实现对电力客户的精准营销。文章对基于大数据状态下的电力营销模型进行分析,对营销建模流程展开详细探究后,结合某实际电力营销案... 详细信息

大数据技术逐渐渗透到电力领域,为电力营销提供了全新的技术指引,电力营销可充分借助于大数据技术优势,实现对电力客户的精准营销。文章对基于大数据状态下的电力营销模型进行分析,对营销建模流程展开详细探究后,结合某实际电力营销案例进行深度分析,通过对电力客户特征进行挖掘、分析电力客户数据等,制订了安全用电、智能缴费、提升用户满意度等精准营销建议,以期为相关人员提供参考。

关键词：电力营销大数据电力客户

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改良间断垂直褥式缝合法在跟骨骨折L形切口术中的应用

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实用手外科杂志 2023年第3期37卷 389-392页

作者：吴新磊济宁市第二人民医院手足外科山东济宁272000

目的探讨改良间断垂直褥式缝合法在跟骨骨折L形切口术中缝合的临床效果。方法对2022年1月-12月收治的80例行L形切口治疗的跟骨骨折患者,按照切口缝合方法的不同分成观察组(改良间断垂直褥式缝合法,n=40)和对照组(间断垂直褥式缝合法,n=... 详细信息

目的探讨改良间断垂直褥式缝合法在跟骨骨折L形切口术中缝合的临床效果。方法对2022年1月-12月收治的80例行L形切口治疗的跟骨骨折患者,按照切口缝合方法的不同分成观察组(改良间断垂直褥式缝合法,n=40)和对照组(间断垂直褥式缝合法,n=40)。观察两组的时间指标、术后2周切口炎性反应面积、术后1周疼痛评分、术后3个月的手术疗效、并发症发生率。结果观察组的手术时间、切口缝合时间、负压引流时间、切口愈合时间与对照组比较,差异均无统计学意义(P>0.05);观察组术后2周切口炎性反应面积(27.26±7.30)mm2,小于对照组(31.30±7.87)mm2,差异具有统计学意义(P0.05);观察组手术优良率与对照组比较,差异无统计学意义(P>0.05);观察组术后并发症发生率(5.00%)低于对照组(20.00%),差异具有统计学意义(P<0.05)。结论相较于间断垂直褥式缝合法,跟骨骨折L形切口术中选择改良间断垂直褥式缝合法完成切口缝合,能缩小切口炎性反应面积,降低并发症发生率。

关键词：改良间断垂直褥式缝合法跟骨骨折 L形切口切口愈合并发症

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论南朝以建康为中心的山水诗源流

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南海学刊 2019年第3期5卷 99-106页

作者：吴新雷南京大学文学院

宋、齐、梁、陈的京都建康(今江苏南京)是南朝的政治文化中心,涌现了一批杰出的山水诗人,他们激赏江南大自然的美景,从玄言诗风中解脱出来,纷纷面向自然界,自觉地写出了具有审美意识的自然山水诗,使建康成了南朝山水诗勃兴的发祥地。他... 详细信息

宋、齐、梁、陈的京都建康(今江苏南京)是南朝的政治文化中心,涌现了一批杰出的山水诗人,他们激赏江南大自然的美景,从玄言诗风中解脱出来,纷纷面向自然界,自觉地写出了具有审美意识的自然山水诗,使建康成了南朝山水诗勃兴的发祥地。他们从京城走向四方,扩大了生活面,见识了各地的名山大川,从而由建康诗坛向外拓展了山水诗的新境界,如东到太湖流域,出现了描绘无锡惠山的山水诗;南下会稽、永嘉,使谢灵运的吟咏翻新了意境。而谢朓出任宣城太守以后的山水诗,实践了“永明体”讲究声律的“新变”,直接影响到唐代律诗的形成。以大谢和小谢为代表,开创了山水诗新的艺术风格。从这条创新道路向前发展,便造成了唐代山水诗的大盛。

关键词：建康诗坛自然山水诗谢灵运谢朓永明体

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