Resource Type

Journal Article 261

Conference Videos 5

Year

2024 1

2023 19

2022 25

2021 24

2020 15

2019 18

2018 5

2017 11

2016 16

2015 12

2014 6

2013 9

2012 14

2011 9

2010 18

2009 9

2008 14

2007 11

2006 7

2005 2

open ︾

Keywords

Air pollution 10

air pollution 8

China 4

air quality 4

ozone 4

Air pollution control 3

ANOVA 2

Air pollution exposure 2

Air quality 2

Catalytic wet air oxidation 2

air pollution control 2

air temperature 2

air-conditioning 2

artificial intelligence 2

desiccant air-conditioning 2

development 2

laminar flame speed 2

numerical simulation 2

performance 2

open ︾

Search scope:

排序： Display mode:

Torque characteristics in a large permanent magnet synchronous generator with stator radial ventilatingair ducts Article

He HAO,Wei-zhong FEI,Dong-min MIAO,Meng-jia JIN,Jian-xin SHEN

Frontiers of Information Technology & Electronic Engineering 2016, Volume 17, Issue 8,   Pages 814-824 doi: 10.1631/FITEE.1500238

Abstract: characteristics of large low-speed direct-drive permanent magnet synchronous generators with stator radialventilating air ducts for offshore wind power applications.ventilating air ducts and rotor step skewing on torque features.The influences of the radial ventilating ducts in the stator on torque characteristics, such as torqueThe results showed that stator radial ventilating air ducts could not only reduce the average torque

Keywords： Permanent magnet synchronous generator (PMSG)     Radial ventilating air duct     Torque ripple     Step skewing    

HTML PDF Collect

Bile duct injury repair — earlier is not better

Vinay K. Kapoor

Frontiers of Medicine 2015, Volume 9, Issue 4,   Pages 508-511 doi: 10.1007/s11684-015-0418-7

Abstract:

Bile duct injury is a common complication of cholecystectomy.The timing of bile duct injury repair remains controversial.Most patients with bile duct injury present with bile leak and sepsis; thus, early repair is not recommendedand endoscopic stenting are the mainstays of treatment of bile leak because they convert acute bile duct

Keywords： bile duct injury     cholecystectomy     laparoscopic cholecystectomy    

HTML PDF Collect

A giant Müllerian duct cyst in the perineum: a case report

Xianghu Meng, Jihong Liu, Xiao Yu, Shaogang Wang, Cong Liu, Zhangqun Ye

Frontiers of Medicine 2012, Volume 6, Issue 4,   Pages 440-443 doi: 10.1007/s11684-012-0222-6

Abstract:

The authors present a case report of a giant Müllerian duct cyst in the perineum.Pathologic examination confirmed the presence of a Müllerian duct cyst.Huge Müllerian duct cyst is uncommon in clinic.Treatments of Müllerian duct cysts depend on their sizes and symptoms.

Keywords： Müllerian duct cyst     clinical symptoms     diagnosis    

HTML PDF Collect

Calculation method of radial stress and deformation on conic threaded connections with interference fit

Shoujun CHEN, Qiang LI, Qi AN,

Frontiers of Mechanical Engineering 2010, Volume 5, Issue 3,   Pages 302-307 doi: 10.1007/s11465-010-0018-9

Abstract: This paper presents a calculation method for radial stress distribution and deformation on conic threadedThe model offers a new way of calculating the radial stress and deformation on conic thread connections

Keywords： conic threaded connections     interference fit     radial stress     deformation     finite element analysis (FEA)    

HTML PDF Collect

Diagnosis and treatment of thyroglossal duct carcinoma: Report of three cases with review of literatures

GAO Yan, CHEN Yan, SUN Zhipeng, GUO Chuanbin, YU Guangyan, ZHAN Yi

Frontiers of Medicine 2008, Volume 2, Issue 1,   Pages 58-62 doi: 10.1007/s11684-008-0011-4

Abstract: Thyroglossal duct carcinoma, which is usually diagnosed postoperatively, is a rare malignant tumor arisingin the thyroglossal duct cyst.We retrospectively reviewed three cases of thyroglossal duct carcinoma diagnosed in Peking UniversityThe constituent ratio of thyroglossal duct carcinoma among surgically excised thyroglossal duct lesionsTwo cases were diagnosed as thyroglossal duct cyst prior to the operation, the remaining one as dermoid
HTML PDF Collect

Hierarchical ZSM-5 zeolite with radial mesopores: Preparation, formation mechanism and application for

Darui Wang, Hongmin Sun, Wei Liu, Zhenhao Shen, Weimin Yang

Frontiers of Chemical Science and Engineering 2020, Volume 14, Issue 2,   Pages 248-257 doi: 10.1007/s11705-019-1853-9

Abstract: Hierarchical ZSM-5 zeolite with radial mesopores is controllably synthesized using piperidine in a NaOHIn this manner, radial mesopores are formed in the ZSM-5 zeolite with a maximal preservation of the microporesThe incorporation of the radial mesopores results in micropores that are interconnected which shortened

Keywords： hierarchical ZSM-5 zeolite     protective desilication     piperidine     radial mesopores     benzene alkylation    

HTML PDF Collect

Different manipulation mode analysis of a radial symmetrical hexapod robot with leg–arm integration

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 1,   Pages 8-8 doi: 10.1007/s11465-021-0664-0

Abstract: With the widespread application of legged robot in various fields, the demand for a robot with high locomotion and manipulation ability is increasing. Adding an extra arm is a useful but general method for a legged robot to obtain manipulation ability. Hence, this paper proposes a novel hexapod robot with two integrated leg–arm limbs that obtain dexterous manipulation functions besides locomotion ability without adding an extra arm. The manipulation modes can be divided into coordinated manipulation condition and single-limb manipulation condition. The former condition mainly includes fixed coordinated clamping case and fixed coordinated shearing case. For the fixed coordinated clamping case, the degrees of freedom (DOFs) analysis of equivalent parallel mechanism by using screw theory and the constraint equation of two integrated limbs are established. For the fixed coordinated shearing case, the coordinated working space is determined, and an ideal coordinated manipulation ball is presented to guide the coordinated shearing task. In addition, the constraint analysis of two adjacent integrated limbs is performed. Then, mobile manipulation with one integrated leg–arm limb while using pentapod gait is discussed as the single-limb manipulation condition, including gait switching analysis between hexapod gait and pentapod gait, different pentapod gaits analysis, and a complex six-DOF manipulation while walking. Corresponding experiments are implemented, including clamping tasks with two integrated limbs, coordinated shearing task by using two integrated limbs, and mobile manipulation with pentapod gait. This robot provides a new approach to building a multifunctional locomotion platform.

Keywords： leg–arm integration     hexapod robot     fixed coordinated manipulation     mobile manipulation    

HTML PDF Collect

Comparison of optimal capacitor placement methods in radial distribution system with load growth and

Veera Venkata Satya Naryana MURTY, Ashwani KUMAR

Frontiers in Energy 2013, Volume 7, Issue 2,   Pages 197-213 doi: 10.1007/s11708-013-0249-7

Abstract: sensitivity (PLS) index-based approach is proposed to determine the optimal location of the capacitors in the radial

Keywords： load growth     load models     reactive power compensation     radial distribution system     power loss index (PLI)    

HTML PDF Collect

A total torque index for dynamic performance evaluation of a radial symmetric six-legged robot

Kejia LI, Xilun DING, Marco CECCARELL

Frontiers of Mechanical Engineering 2012, Volume 7, Issue 2,   Pages 219-230 doi: 10.1007/s11465-012-0320-9

Abstract:

This article focuses on the dynamic index and performance of a radial symmetric six-legged robot.

Keywords： six-legged robots     dynamic modeling     performance index    

HTML PDF Collect

Strategies of minimally invasive treatment for intrahepatic and extrahepatic bile duct stones

Zongming Zhang, Zhuo Liu, Limin Liu, Mengmeng Song, Chong Zhang, Hongwei Yu, Baijiang Wan, Mingwen Zhu, Zixu Liu, Hai Deng, Haiming Yuan, Haiyan Yang, Wenping Wei, Yue Zhao

Frontiers of Medicine 2017, Volume 11, Issue 4,   Pages 576-589 doi: 10.1007/s11684-017-0536-5

Abstract: method, effect, and complications of minimally invasive treatment of intrahepatic and extrahepatic bile ductstones by combining our practical experience were summarized as follows. (1) For intrahepatic bile ductstones, the operation may be selected by laparoscopic liver resection, laparoscopic common bile ductLCBDE), or percutaneous transhepatic cholangioscopy. (2) For concomitant gallstones and common bile ductLCBDE, and T-tube drainage or primary suture. (3) For concomitant intrahepatic and extrahepatic bile duct

Keywords： laparoscopy     choledochoscopy     duodenoscopy     cholelithiasis     minimally invasive treatment    

HTML PDF Collect

An efficient stochastic dynamic analysis of soil media using radial basis function artificial neural

P. ZAKIAN

Frontiers of Structural and Civil Engineering 2017, Volume 11, Issue 4,   Pages 470-479 doi: 10.1007/s11709-017-0440-8

Abstract: Since a lot of engineering problems are along with uncertain parameters, stochastic methods are of great importance for incorporating random nature of a system property or random nature of a system input. In this study, the stochastic dynamic analysis of soil mass is performed by finite element method in the frequency domain. Two methods are used for stochastic analysis of soil media which are spectral decomposition and Monte Carlo methods. Shear modulus of soil is considered as a random field and the seismic excitation is also imposed as a random process. In this research, artificial neural network is proposed and added to Monte Carlo method for sake of reducing computational effort of the random analysis. Then, the effects of the proposed artificial neural network are illustrated on decreasing computational time of Monte Carlo simulations in comparison with standard Monte Carlo and spectral decomposition methods. Numerical verifications are provided to indicate capabilities, accuracy and efficiency of the proposed strategy compared to the other techniques.

Keywords： stochastic analysis     random seismic excitation     finite element method     artificial neural network     frequency domain analysis     Monte Carlo simulation    

HTML PDF Collect

Radial electromagnetic type unbalance vibration self-recovery regulation system for high-end grinding

Frontiers of Mechanical Engineering 2023, Volume 18, Issue 3, doi: 10.1007/s11465-023-0763-1

Abstract: Modern rotating machines, which are represented by high-end grinding machines, have developed toward high precision, intelligence, and high durability in recent years. As the core components of grinding machine spindles, grinding wheels greatly affect the vibration level during operation. The unbalance vibration self-recovery regulation (UVSRR) system is proposed to suppress the vibration of grinding wheels during workpiece processing, eliminating or minimizing the imbalance. First, technical principles and the system composition are introduced. Second, the balancing actuator in the UVSRR system is analyzed in detail. The advanced nature of the improved structure is presented through structure introduction and advantage analysis. The performance of the balancing actuator is mutually verified by the theoretical calculation of torque and software simulation. Results show that the self-locking torque satisfies the actual demand, and the driving torque is increased by 1.73 times compared with the traditional structure. Finally, the engineering application value of the UVSRR system is verified by laboratory performance comparison and actual factory application. The balancing speed and effect of the UVSRR system are better than those of an international mainstream product and, the quality of the workpieces machined in the factory improved by 40%.

Keywords： UVSRR system     radial electromagnetic type     vibration suppression     performance simulation     engineering    

HTML PDF Collect

A redundantly actuated PRPRP radial mechanism in the segment erector of a shield machine for synchronization

Wanghui BU, Zhenyu LIU, Jianrong TAN, Jin CHENG

Frontiers of Mechanical Engineering 2011, Volume 6, Issue 4,   Pages 463-467 doi: 10.1007/s11465-011-0225-z

Abstract: is difficult to achieve precise control in the 6-DOF (degree of freedom) erector in the 2-DOF 5-bar radialHence, this paper proposes a redundantly actuated PRPRP radial mechanism for the segment erector.When the redundant actuator is unlocked, the radial mechanism is able to adjust its posture, which hasthe PRPRP mechanism can ensure the synchronization of the two driving hydraulic cylinders along the radial

Keywords： redundant actuation     parallel mechanisms     five-bar mechanisms     segment erectors     shield machines    

HTML PDF Collect

An optimized grey wolf optimizer based on a mutation operator and eliminating-reconstructing mechanism and its application Article

Xiao-qing ZHANG, Zheng-feng MING

Frontiers of Information Technology & Electronic Engineering 2017, Volume 18, Issue 11,   Pages 1705-1719 doi: 10.1631/FITEE.1601555

Abstract: , MR-GWO is applied to the global optimization experiment of 13 standard continuous functions and a radial

Keywords： Swarm intelligence     Grey wolf optimizer     Optimization     Radial basis function network    

HTML PDF Collect

Numerical calculation for the equivalent surface source of the thermal neutron duct of in-hospital neutron

Zhu Yangni,Jiang Xinbiao,Zhao Zhumin,Zhang Liang,Zhou Yongmao

Strategic Study of CAE 2012, Volume 14, Issue 8,   Pages 56-59

Abstract: text-align: justify;">Numerical calculation for the equivalent surface source of the thermal neutron ductNeutron beam parameters at the exit of thermal neutron duct are calculated.

Keywords： IHNI－1 reactor     thermal neutron duct     equivalent neutron surface source     equivalent γ surface source    

HTML PDF Collect

Title Author Date Type Operation

Torque characteristics in a large permanent magnet synchronous generator with stator radial ventilatingair ducts

He HAO,Wei-zhong FEI,Dong-min MIAO,Meng-jia JIN,Jian-xin SHEN

Journal Article

Bile duct injury repair — earlier is not better

Vinay K. Kapoor

Journal Article

A giant Müllerian duct cyst in the perineum: a case report

Xianghu Meng, Jihong Liu, Xiao Yu, Shaogang Wang, Cong Liu, Zhangqun Ye

Journal Article

Calculation method of radial stress and deformation on conic threaded connections with interference fit

Shoujun CHEN, Qiang LI, Qi AN,

Journal Article

Diagnosis and treatment of thyroglossal duct carcinoma: Report of three cases with review of literatures

GAO Yan, CHEN Yan, SUN Zhipeng, GUO Chuanbin, YU Guangyan, ZHAN Yi

Journal Article

Hierarchical ZSM-5 zeolite with radial mesopores: Preparation, formation mechanism and application for

Darui Wang, Hongmin Sun, Wei Liu, Zhenhao Shen, Weimin Yang

Journal Article

Different manipulation mode analysis of a radial symmetrical hexapod robot with leg–arm integration

Journal Article

Comparison of optimal capacitor placement methods in radial distribution system with load growth and

Veera Venkata Satya Naryana MURTY, Ashwani KUMAR

Journal Article

A total torque index for dynamic performance evaluation of a radial symmetric six-legged robot

Kejia LI, Xilun DING, Marco CECCARELL

Journal Article

Strategies of minimally invasive treatment for intrahepatic and extrahepatic bile duct stones

Zongming Zhang, Zhuo Liu, Limin Liu, Mengmeng Song, Chong Zhang, Hongwei Yu, Baijiang Wan, Mingwen Zhu, Zixu Liu, Hai Deng, Haiming Yuan, Haiyan Yang, Wenping Wei, Yue Zhao

Journal Article

An efficient stochastic dynamic analysis of soil media using radial basis function artificial neural

P. ZAKIAN

Journal Article

Radial electromagnetic type unbalance vibration self-recovery regulation system for high-end grinding

Journal Article

A redundantly actuated PRPRP radial mechanism in the segment erector of a shield machine for synchronization

Wanghui BU, Zhenyu LIU, Jianrong TAN, Jin CHENG

Journal Article

An optimized grey wolf optimizer based on a mutation operator and eliminating-reconstructing mechanism and its application

Xiao-qing ZHANG, Zheng-feng MING

Journal Article

Numerical calculation for the equivalent surface source of the thermal neutron duct of in-hospital neutron

Zhu Yangni,Jiang Xinbiao,Zhao Zhumin,Zhang Liang,Zhou Yongmao

Journal Article