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Self-generation of machining precision and its realization in lapping of super precision solid balls
ZHANG Bopeng
《机械工程前沿(英文)》 2008年 第3卷 第3期 页码 348-353 doi: 10.1007/s11465-008-0065-7
关键词: self-generation necessary self-regulation capability viewpoint Necessary
Climate change and its consequences for water and wastewater management
Peter A. WILDERER
《环境科学与工程前沿(英文)》 2009年 第3卷 第1期 页码 1-1 doi: 10.1007/s11783-009-0001-z
关键词: ecosystem management tools self-regulation urbanization water-climate relationship water reuse
Design and experimental study of a passive power-source-free stiffness-self-adjustable mechanism
Yuwang LIU, Dongqi WANG, Shangkui YANG, Jinguo LIU, Guangbo HAO
《机械工程前沿(英文)》 2021年 第16卷 第1期 页码 32-45 doi: 10.1007/s11465-020-0604-4
关键词: variable stiffness mechanism stiffness self-regulation bionic robot modeling
《机械工程前沿(英文)》 2023年 第18卷 第3期 doi: 10.1007/s11465-023-0763-1
关键词: UVSRR system radial electromagnetic type vibration suppression performance simulation engineering application
SALL4 maintains self-renewal of porcine pluripotent stem cells through downregulation of OTX2
Ning WANG, Sile WANG, Yaxian WANG, Yuanxing CAI, Fan YANG, Huayan WANG
《农业科学与工程前沿(英文)》 2019年 第6卷 第1期 页码 81-92 doi: 10.15302/J-FASE-2017180
Sall4 as one of the spalt family members contains several alternative splicing variants, which are differentially expressed and has a key role in maintaining pluripotent stem cells. However, the molecular features and function of SALL4 have not been well elucidated in porcine induced pluripotent stem cells (piPSCs). In this study, we identified splice variants and found two splicing variants through analysis of the porcine transcriptome data derived from piPSCs. SALL4A was only detected in piPSCs but SALL4B was globally expressed in porcine tissues and piPSCs. The level of SALL4B was significantly reduced when piPSCs differentiation occurred, however, the expression of SALL4A was not affected, indicating that SALL4B may be essential for the maintenance of piPSCs self-renewal. Overexpression of SALL4A and SALL4B in PEF cells could significantly stimulated expression of endogenous pluripotent genes, when SALL4B significantly promoted OCT4 expression. Conversely, SALL4A significantly promoted KLF4 expression. Additionally, both SALL4A and SALL4B could repress promoter activity in a dose-dependent manner. Conversely, OTX2 also negatively regulated SALL4 expression. These observations indicate that a negative feedback regulatory mechanism may exist between SALL4 and OTX2, which is useful for the maintenance of the self-renewal of piPSCs.
API-based assessment on urban air environment bearing capability in China
Jinnan WANG,Jing ZHANG,Hongqiang JIANG,Yaling LU
《环境科学与工程前沿(英文)》 2015年 第9卷 第6期 页码 1049-1055 doi: 10.1007/s11783-014-0662-0
关键词: air pollution index (API) air environment bearing capability key city assessment method
Enhancing power transfer capability through flexible AC transmission system devices: a review
Fadi M. ALBATSH,Saad MEKHILEF,Shameem AHMAD,H. MOKHLIS,M. A. HASSAN
《信息与电子工程前沿(英文)》 2015年 第16卷 第8期 页码 658-678 doi: 10.1631/FITEE.1500019
关键词: FACTS devices Available transfer capability Power transfer capability Artificial intelligence
Motion capability analysis of a quadruped robot as a parallel manipulator
Jingjun YU,Dengfeng LU,Zhongxiang ZHANG,Xu PEI
《机械工程前沿(英文)》 2014年 第9卷 第4期 页码 295-307 doi: 10.1007/s11465-014-0317-7
This paper presents the forward and inverse displacement analysis of a quadruped robot MANA as a parallel manipulator in quadruple stance phase, which is used to obtain the workspace and control the motion of the body. The robot MANA designed on the basis of the structure of quadruped mammal is able to not only walk and turn in the uneven terrain, but also accomplish various manipulating tasks as a parallel manipulator in quadruple stance phase. The latter will be the focus of this paper, however. For this purpose, the leg kinematics is primarily analyzed, which lays the foundation on the gait planning in terms of locomotion and body kinematics analysis as a parallel manipulator. When all four feet of the robot contact on the ground, by assuming there is no slipping at the feet, each contacting point is treated as a passive spherical joint and the kinematic model of parallel manipulator is established. The method for choosing six non-redundant actuated joints for the parallel manipulator from all twelve optional joints is elaborated. The inverse and forward displacement analysis of the parallel manipulator is carried out using the method of coordinate transformation. Finally, based on the inverse and forward kinematic model, two issues on obtaining the reachable workspace of parallel manipulator and planning the motion of the body are implemented and verified by ADAMS simulation.
关键词: quadruped robot actuated joints selection kinematics analysis motion planning parallel manipulator
Moving policy and regulation forward for single-use plastic alternatives
《环境科学与工程前沿(英文)》 2021年 第15卷 第3期 doi: 10.1007/s11783-021-1423-5
关键词: Single-use plastic alternatives Policy Regulation Sustainable development
Phase transition regulation and caloric effect
《能源前沿(英文)》 2023年 第17卷 第4期 页码 463-477 doi: 10.1007/s11708-023-0860-1
关键词: phase transition regulation caloric effect solid state refrigeration
Selective pseudosolubilization capability of
Fei HUA, Hongqi WANG
《环境科学与工程前沿(英文)》 2013年 第7卷 第4期 页码 539-551 doi: 10.1007/s11783-013-0498-z
关键词:
Evaluation of stray current corrosion resistance of concrete in metro construction
YANG Shucai, YANG Xu
《结构与土木工程前沿(英文)》 2008年 第2卷 第3期 页码 246-252 doi: 10.1007/s11709-008-0036-4
The function and regulation of OTU deubiquitinases
Jiansen Du, Lin Fu, Yingli Sui, Lingqiang Zhang
《医学前沿(英文)》 2020年 第14卷 第5期 页码 542-563 doi: 10.1007/s11684-019-0734-4
关键词: ubiquitin OTU deubiquitinases structure function regulation
《环境科学与工程前沿(英文)》 2021年 第15卷 第6期 doi: 10.1007/s11783-021-1433-3
• Short-term effect of the pyridine exposure on the SAD process was investigated.
关键词: Anammox Inhibition Metabolic pathway Microbial community Pyridine SAD
标题 作者 时间 类型 操作
Self-generation of machining precision and its realization in lapping of super precision solid balls
ZHANG Bopeng
期刊论文
Design and experimental study of a passive power-source-free stiffness-self-adjustable mechanism
Yuwang LIU, Dongqi WANG, Shangkui YANG, Jinguo LIU, Guangbo HAO
期刊论文
Radial electromagnetic type unbalance vibration self-recovery regulation system for high-end grinding
期刊论文
SALL4 maintains self-renewal of porcine pluripotent stem cells through downregulation of OTX2
Ning WANG, Sile WANG, Yaxian WANG, Yuanxing CAI, Fan YANG, Huayan WANG
期刊论文
API-based assessment on urban air environment bearing capability in China
Jinnan WANG,Jing ZHANG,Hongqiang JIANG,Yaling LU
期刊论文
Enhancing power transfer capability through flexible AC transmission system devices: a review
Fadi M. ALBATSH,Saad MEKHILEF,Shameem AHMAD,H. MOKHLIS,M. A. HASSAN
期刊论文
Motion capability analysis of a quadruped robot as a parallel manipulator
Jingjun YU,Dengfeng LU,Zhongxiang ZHANG,Xu PEI
期刊论文
Evaluation of stray current corrosion resistance of concrete in metro construction
YANG Shucai, YANG Xu
期刊论文
The function and regulation of OTU deubiquitinases
Jiansen Du, Lin Fu, Yingli Sui, Lingqiang Zhang
期刊论文