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International Journal of Minerals,Metallurgy and Materials 2020年第5期27卷 630-639页

作者： Ying Zhang teng-fei han Meng Xiao Yi-fu Shen College of Materials Science and Technology Nanjing University of Aeronautics and Astronautics(NUAA)Nanjing 210016China Nanjing Institute of Advanced Laser Technology Nanjing 210038China

FeNiCoCrTi0.5 coatings with different process parameters were fabricated by laser cladding. The macro-morphology, phase, microstructure, hardness, and wear resistance of each coating were studied. The smoothness and dilution rate of the FeNiCoCrTi0.5 coating generally increased with the increase of specific energy(Es), which is the laser irradiation energy received by a unit area. FeNiCoCrTi0.5 coatings at different parameters had bcc, fcc, and Ti-rich phases as well as equiaxed, dendritic, and columnar structures. When Es increased, the size of each structure increased and the distribution area of the columnar and dendritic structures changed. The prepared FeNiCoCrTi0.5 coating with the Es of 72.22 J·mm-2 had the highest hardness and the best wear resistance, the highest hardness of the coating reached HV 498.37, which is twice the substrate hardness. The average hardness of the FeNiCoCrTi0.5 coating with the Es of 72.22 J·mm-2 was 15.8% higher than the lowest average hardness of the coating with the Es of 108.33 J·mm-2. The worn surface morphologies indicate that the FeNiCoCrTi0.5 coatings exhibited abrasive wear.

关键词： high-entropy alloy coating 45 steel laser cladding microstructure wear resistance

Construction of 3-Azabicyclo[3.1.0]hexane Backbone by the Reaction of Allenes with Allylamines via Tandem Michael Addition and Copper-Mediated Oxidative Carbanion Cyclization

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Chinese Journal of Chemistry 2021年第3期39卷 666-670页

作者： Hui Xu teng han Xiaoyan Luo Wei-Ping Deng Shanghai Key Laboratory of New Drug Design and School of Pharmacy East China University of Science and Technology130 Meilong RoadShanghai 200237China

Main observation and conclusion A facile synthetic method for the construction of 3-azabicyclo[3.1.0]hexane in the presence of copper catalyst system was *** reaction proceeds through Michael addition of allylamines with allenes followed by copper-mediated intramolecular oxidative carbanion 5-exo-trig radical cyclization,affording potential biologically active 3-azabicyclo[3.1.O]hexane derivatives in moderate to high yields(42%-85%).

关键词： Oxidative coupling Allenes Allylamine 3-Azabicyclohexane Miachel addition

Skin-integrated stretchable actuators toward skin-compatible haptic feedback and closed-loop human-machine interactions

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npj Flexible Electronics 2023年第1期7卷 555-566页

作者： Si Chen Yanjun Chen Ji Yang teng han Shanshan Yao Department of Mechanical Engineering Stony Brook UniversityStony BrookNY 11794USA Institute of Software Chinese Academy of Sciences100190 BeijingChina Meta Platforms Menlo ParkCA 94025USA

Skin-integrated haptic interfaces that can relay a wealth of information from the machine to the human are of great ***,existing haptic devices are not yet able to produce haptic cues that are compatible with the *** this work,we present the stretchable soft actuators for haptic feedback,which can match the perception range,spatial resolution,and stretchability of the ***-amplification structures are fabricated using a scalable self-assembly process to ensure an output pressure beyond the skin perception *** to the minimized device size,the actuator array can be fabricated with a sufficiently high spatial resolution,which makes the haptic device applicable for skin locations with the highest spatial acuity.A haptic feedback system is demonstrated by employing the developed soft actuators and highly sensitive pressure *** proof-ofconcept applications are developed to illustrate the capability of transferring information related to surface textures and object shapes acquired at the robot side to the user side.

关键词： robot Skin stretch

Exploring the effect of fingertip aero-haptic feedforward cues in directing eyes-free target acquisition in VR

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虚拟现实与智能硬件（中英文） 2024年第2期6卷 113-131页

作者： Xiaofei REN Jian HE teng han Songxian LIU Mengfei LV Rui ZHOU Faculty of Information Technology Beijing University of TechnologyBeijing 100124China Institute of Software Chinese Academy of SciencesBeijing 100190China Beijing Engineering Research Center for IoT Software and Systems Beijing University of TechnologyBeijing 100124China

Background The sense of touch plays a crucial role in interactive behavior within virtual spaces,particularly when visual attention is *** haptic feedback has been widely used to compensate for the lack of visual cues,the use of tactile information as a predictive feedforward cue to guide hand movements remains unexplored and lacks theoretical *** This study introduces a fingertip aero-haptic rendering method to investigate its effectiveness in directing hand movements during eyes-free spatial *** wearable device incorporates a multichannel micro-airflow chamber to deliver adjustable tactile effects on the *** The first study verified that tactile directional feedforward cues significantly improve user capabilities in eyes-free target acquisition and that users rely heavily on haptic indications rather than spatial memory to control their hands.A subsequent study examined the impact of enriched tactile feedforward cues on assisting users in determining precise target positions during eyes-free interactions,and assessed the required learning *** The haptic feedforward effect holds great practical promise in eyeless design for virtual *** aim to integrate cognitive models and tactile feedforward cues in the future,and apply richer tactile feedforward information to alleviate users'perceptual deficiencies.

关键词： Haptic Feedforward Virtual reality Aero-haptic

Enhanced recovery after surgery programs in patients undergoing hepatectomy:A meta-analysis

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World Journal of Gastroenterology 2015年第30期21卷 9209-9216页

作者： Tian-Gen Ni han-teng Yang Hao Zhang Hai-Peng Meng Bo Li Department of Liver Surgery Liver Transplantation CenterWest China Hospital of Sichuan University

AIM:To evaluate the impact of enhanced recovery after surgery(ERAS) programs in comparison with traditional care on liver surgery ***:The Pub Med,EMBASE,CNKI and Cochrane Central Register of Controlled Trials databases were searched for randomized controlled trials(RCTs) comparing the ERAS program with traditional care in patients undergoing liver surgery. Studies selected for the meta-analysis met all of the following inclusion criteria:(1) evaluation of ERAS in comparison to traditional care in adult patients undergoing elective open or laparoscopic liver surgery;(2) outcome measures including complications,recovery of bowel function,and hospital length of stay; and(3) RCTs. The following exclusion criteria were applied:(1) the study was not an RCT;(2) the study did not compare ERAS with traditional care;(3) the study reported on emergency,non-elective or transplantation surgery; and(4) the study consisted of unpublished studies with only the abstract presented at a national or international meeting. The primary outcomes were complications. Secondary outcomes were length of hospital stay and time to first ***:Five RCTs containing 723 patients were included in the meta-analysis. In 10/723 cases,patients presented with benign diseases,while the remaining 713 cases had liver cancer. Of the five studies,three were published in English and two were published in Chinese. Three hundred and fifty-four patients were in the ERAS group,while 369 patients were in the traditional care group. Compared with traditional care,ERAS programs were associated with significantly decreased overall complications(RR = 0.66; 95%CI:0.49-0.88; P = 0.005),grade?Ⅰ?complications(RR = 0.51; 95%CI:0.33-0.79; P = 0.003),and hospitallength of stay [WMD =-2.77 d,95%CI:-3.87-(-1.66); P < 0.00001]. Similarly,ERAS programs were associated with decreased time to first flatus [WMD =-19.69 h,95%CI:-34.63-(-4.74); P < 0.0001]. There was no statistically significant difference in gra

关键词： Enhanced recovery after surgery Liversurgery Complications Hospital length of stay Metaanalysis

Multimodal Interactive Network for Sequential Recommendation

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Journal of Computer Science & Technology 2023年第4期38卷 911-926页

作者：韩滕跃王鹏飞牛少彰 Beijing Key Laboratory of Intelligent Telecommunication Software and Multimedia Beijing University of Posts and TelecommunicationsBeijing 100876China School of Computer Science Beijing University of Posts and TelecommunicationsBeijing 100876China

Building an effective sequential recommendation system is still a challenging task due to limited interactions among users and *** work has shown the effectiveness of incorporating textual or visual information into sequential recommendation to alleviate the data sparse *** data sparse problem now is attracting a lot of attention in both industry and academic ***,considering interactions among modalities on a sequential scenario is an interesting yet challenging task because of multimodal *** this paper,we introduce a novel recommendation approach of considering both textual and visual information,namely Multimodal Interactive Network(MIN).The advantage of MIN lies in designing a learning framework to leverage the interactions among modalities from both the item level and the sequence level for building an efficient ***,an item-wise interactive layer based on the encoder-decoder mechanism is utilized to model the item-level interactions among modalities to select the informative ***,a sequence interactive layer based on the attention strategy is designed to capture the sequence-level preference of each *** seamlessly incorporates interactions among modalities from both the item level and the sequence level for sequential *** is the first time that interactions in each modality have been explicitly discussed and utilized in sequential *** results on four real-world datasets show that our approach can significantly outperform all the baselines in sequential recommendation task.

关键词： multi-modality interactive network sequential recommendation

Ultrasonic integrated backscatter in assessing liver steatosis before and after liver transplantation

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Hepatobiliary & Pancreatic Diseases International 2014年第4期13卷 402-408页

作者： han-teng Yang Ke-Fei Chen Qiang Lu Yong-Gang Wei Bo Li Yang Qin Wen-Qing Huang Department of Liver Surgery and Liver Transplantation Center West China Hospital Sichuan University Department of Ultrasound West China Hospital Sichuan University Institute of Biochemistry and Molecular Biology West China School ofPreclinical and Forensic Medicine Sichuan University

BACKGROUND： Liver steatosis affects 20%-30% of *** of the increasing gap between graft supplies and demands, livers with steatosis are frequently used in liver transplantation. But severely steatotic liver grafts are associated with a high risk of intraoperative and postoperative complications. Accurate assessment of fat content of donor livers and monitoring of the extent of steatosis in recipients are required for liver transplantation. The present study aimed to determine the correlation between liver echogenicity and fat content, and to evaluate the use of an ultrasonic integrated backscatter system（IBS） in the assessment of changes in fat content after liver ***： Seventy-nine consecutive patients receiving liver grafts from living donors were evaluated in our center. Of these recipients, 67 survived for more than two years and were included in this study. Each liver graft was evaluated with IBS and ultrasound before operation and the fat content was estimated. The fat content of the grafts in the recipients was again assessed with ultrasound at 18 months after ***： A correlation was detected between each graft＇s IBS value and its fat content（P=0.001）. The IBS value in fatty grafts with various degrees of steatosis was significantly decreased in 3（P=0.02）, 12, 15 and 18（P=0.001） months after orthotopic liver transplantation. The IBS value returned to normal in all patients in 18 months after liver ***： Decreased fat content in steatotic grafts can be observed in all recipients. Ultrasonic IBS is useful in determining the steatotic degree of grafts in donors as well as in monitoring the grafts after liver transplantation.

关键词： fat content fatty liver liver transplantation ultrasonic integrated backscatter

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液固混合介质的隔振性能分析

振动工程学报 2009年第3期22卷 256-261页

作者：滕汉东陈前南京航空航天大学振动工程研究所江苏南京210016

液固混合介质以一种全新的工作机理形成优良的隔振系统动力学特性,此介质由一类几乎不可压缩液体和许多可压缩的固体单元混合而成;当振动、冲击发生时,液体将动压力瞬间传递到所有单元体上,使它们同时参与变形,可有效隔离振动,冲击能量... 详细信息

液固混合介质以一种全新的工作机理形成优良的隔振系统动力学特性,此介质由一类几乎不可压缩液体和许多可压缩的固体单元混合而成;当振动、冲击发生时,液体将动压力瞬间传递到所有单元体上,使它们同时参与变形,可有效隔离振动,冲击能量也可被大幅度吸收、损耗;若设计得当,这类隔振器可同时具有卓越的隔振、缓冲性能。为研究其隔振机理与隔振性能,以空心橡胶球作为固体单元体,分析了该单元体在有限变形情况下的变形规律以及隔振器的非线性刚度特性,建立了系统的非线性动力学方程;采用精细时程积分方法,计算了主共振的时域响应,并和试验结果进行了对比,两者有较好的一致性;还用此数值方法研究了系统主共振时的稳定性,在一定条件下,液固混合介质隔振系统主共振响应存在多解和跳跃现象;最后分析了液固混合介质隔振器的隔振性能,发现了一些有趣的新现象。

关键词：液固混合介质隔振非线性刚度振动控制数值积分

从西藏地方对尼泊尔的救灾账目看清中晚期的藏尼关系和货币政策

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中国藏学 2019年第1期 167-173页

作者：韩腾重庆大学人文社会科学高等研究院

文章以清朝中晚期西藏地方政府对尼泊尔的一次跨境救援行动为切入点,通过西藏地方政府在1833年的尼泊尔地震中,主持维修受破坏的加德满都"加容卡肖佛塔",以及藏尼货币兑换关系的变化,重点论证和评析清廷在第二次藏尼战争后在西藏颁行的... 详细信息

文章以清朝中晚期西藏地方政府对尼泊尔的一次跨境救援行动为切入点,通过西藏地方政府在1833年的尼泊尔地震中,主持维修受破坏的加德满都"加容卡肖佛塔",以及藏尼货币兑换关系的变化,重点论证和评析清廷在第二次藏尼战争后在西藏颁行的新货币政策,对18世纪末至19世纪上半叶的藏尼关系所造成的影响和这一时期西藏的白银货币体系等问题。

关键词：西藏地方尼泊尔大佛塔尼藏关系救灾货币制度

金川雍仲拉顶寺碑背面碑文再探——兼论清代驻京喇嘛制度

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中国藏学 2023年第2期 62-72,216页

作者：韩腾四川师范大学历史文化与旅游学院成都610066

四川省阿坝藏族羌族自治州金川县境内的雍仲拉顶寺,作为苯教在嘉绒地区的一座重要寺院,在清乾隆年间先后经历了扩建、兵燹、重建和改宗的过程,尤其是其扩建的历史在寺前所立石碑中有明确记载,学界也多有抄录和研究。经调研发现,该石碑... 详细信息

四川省阿坝藏族羌族自治州金川县境内的雍仲拉顶寺,作为苯教在嘉绒地区的一座重要寺院,在清乾隆年间先后经历了扩建、兵燹、重建和改宗的过程,尤其是其扩建的历史在寺前所立石碑中有明确记载,学界也多有抄录和研究。经调研发现,该石碑是座双面碑,正反两面均镌刻有铭文,但学界多关注正面铭文,对石碑背面碑铭的研究却非常少。因此,文章对石碑背面的文字进行了抄录和释读,对涉及的相关历史人物与事件进行梳理,并在此基础上重新审视了金川战役之后清廷从宗教方面入手的善后事宜,重点对清代驻京喇嘛制度在这一地区的实施情况作了考察。

关键词：雍仲拉顶寺石碑考证驻京喇嘛