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Valveless pumping using a two-stage impedance pump
V. C.-C. LEE, Y. A. ABAKR, K.-C. WOO
《机械工程前沿(英文)》 2013年 第8卷 第3期 页码 311-318 doi: 10.1007/s11465-013-0270-x
Impedance pump is defined as a type of valveless pumping mechanism, where an elastic tube is joined with a tube of different impedance, a periodic asymmetrical compression on part of the elastic tube will produce a unidirectional flow. Numerical and experimental studies had been conducted in the past, but little experimental work was found to exploit the principle of multi-stage impedance pumping for fluid transportation. This paper concentrates on the fluid behavior for an open-loop two-stage system experimentally. The aim of this work is to have an insight on the deliverable head and pumping rate of an open-loop two-stage impedance pumping system. This paper generally investigates the effect of different parameters towards the generation of unidirectional flows and composite flow of two opposite directions. Results obtained are of significant values.
关键词: valveless pumping open-loop two-stage unidirectional composite
Digitalization optical open loop test system for fiber optic gyroscope
ZHANG Deng-wei, SHU Xiao-wu, MU Xu-dong, LIU Cheng
《机械工程前沿(英文)》 2006年 第1卷 第4期 页码 434-438 doi: 10.1007/s11465-006-0053-8
关键词: stability real-time controlling standardization controlling procedure complete digitalization
Improvement of the cascading closed loop cycle system
ZHANG Guoqiang, CAI Ruixian
《能源前沿(英文)》 2007年 第1卷 第3期 页码 341-346 doi: 10.1007/s11708-007-0051-5
《机械工程前沿(英文)》 2022年 第17卷 第3期 doi: 10.1007/s11465-022-0695-1
关键词: translational parallel mechanism single loop multiple driving system workspace analysis singularity
Design and analyses of open-ended pipe piles in cohesionless soils
Yuan GUO,Xiong (Bill) YU
《结构与土木工程前沿(英文)》 2016年 第10卷 第1期 页码 22-29 doi: 10.1007/s11709-016-0314-5
Development of a hydrodynamic model and the corresponding virtual software for dual-loop circulating
Shanwei Hu, Xinhua Liu
《化学科学与工程前沿(英文)》 2021年 第15卷 第3期 页码 579-590 doi: 10.1007/s11705-020-1953-6
关键词: multi-loop circulating fluidized bed mathematical modeling energy minimization multiscale virtual fluidization mesoscale structure
Loop theory and applications to some key problems of kinematic structure of kinematic chains
Huafeng DING, Zhen HUANG
《机械工程前沿(英文)》 2009年 第4卷 第3期 页码 276-283 doi: 10.1007/s11465-009-0061-6
关键词: Loop theory kinematic chains isomorphism atlas database
Thermal response of steel framing members in open car park fires
Xia YAN; Marion CHARLIER; Thomas GERNAY
《结构与土木工程前沿(英文)》 2022年 第16卷 第9期 页码 1071-1088 doi: 10.1007/s11709-022-0879-0
关键词: open car park localized fire steel frame numerical modeling computational fluid dynamics
UPFC setting to avoid active power flow loop considering wind power uncertainty
Shenghu LI, Ting WANG
《能源前沿(英文)》 2023年 第17卷 第1期 页码 165-175 doi: 10.1007/s11708-020-0686-z
关键词: active power loop flow (APLF) unified power flow controller (UPFC) wind power uncertainty interval power flow (IPF)
NC flame pipe cutting machine tool based on open architecture CNC system
Xiaogen NIE, Yanbing LIU
《机械工程前沿(英文)》 2009年 第4卷 第2期 页码 147-152 doi: 10.1007/s11465-009-0025-x
关键词: flame pipe cutting flame incision tracks CNC open architecture CNC system
Cavitation in semi-open centrifugal impellers for a miniature pump
LUO Xianwu, LIU Shuhong, ZHANG Yao, XU Hongyuan
《能源前沿(英文)》 2008年 第2卷 第1期 页码 31-35 doi: 10.1007/s11708-008-0011-8
关键词: cavitation performance semi-open impeller increased two-dimensional efficiency
Experimental investigations on operating characteristics of a closed loop pulsating heat pipe
Yu WANG
《能源前沿(英文)》 2015年 第9卷 第2期 页码 134-141 doi: 10.1007/s11708-015-0354-x
关键词: closed loop pulsating heat pipe thermal performance operation limit thermography
Evaluation of the harmonic scalpel in open surgery for abdominal aortic aneurysm
null
《医学前沿(英文)》 2012年 第6卷 第1期 页码 85-88 doi: 10.1007/s11684-012-0174-x
The harmonic scalpel is a hemostatic device primarily designed for use in laparoscopic surgery. During the last few years, many surgeons have begun to use the harmonic scalpel in open surgery. Several papers have cited the benefits of the device compared with conventional knot-tying techniques; however, no evidence showing the advantages of using the harmonic scalpel in complicated abdominal aortic aneurysm (AAA) surgery has been presented. The aim of the present study is to determine the value of the harmonic scalpel in open operation for AAA. A total of 153 patients who underwent open surgery for AAA at the Department of Vascular Surgery of Guangdong General Hospital, China between January 2001 and December 2010, were retrospectively analyzed. Open surgery performed with the harmonic scalpel on 105 patients was compared with open operation using conventional knot-tying techniques on 48 patients. The operative time, intraoperative blood loss, total postoperative drainage fluid volumes, hospital stay, and postoperative complications between the two groups were compared. The harmonic scalpel group was associated with a shorter operation time (113.2±23.6 min vs. 232.1±39.2 min, P<0.01) and lower intraoperative blood loss (126.1±96.6 ml vs. 592.1±207.2 ml, P<0.01). Postoperative drainage fluid volumes were greater in the conventional surgery group than in the harmonic scalpel group (702.1±192.8 ml vs. 198.5±97.4 ml, P<0.01). The hospital stay was shorter for the harmonic scalpel group than for the conventional surgery group (10.7±3.3 d vs. 16.5±4.7 d, P<0.05). No differences between the postoperative complications or hospital mortality of the two groups were found. The harmonic scalpel is a safe and minimally invasive tool in open surgery for AAA and is associated with shorter operative time, shorter hospital stay, and lower intraoperative blood loss and postoperative drainage fluid volumes compared with conventional knot-tying techniques.
关键词: abdominal aortic aneurysm harmonic scalpel minimally invasive
Experimental study on flow behavior at open channel confluences
WANG Xiekang, WANG Xianye, LU Weizhen, LIU Tonghuan
《结构与土木工程前沿(英文)》 2007年 第1卷 第2期 页码 211-216 doi: 10.1007/s11709-007-0025-z
Ming-jun MA,Zhong-he JIN,Hui-jie ZHU
《信息与电子工程前沿(英文)》 2015年 第16卷 第6期 页码 497-510 doi: 10.1631/FITEE.1400349
关键词: Bias drift Closed-loop MEMS accelerometer Modulated feedback approach Temperature compensation
标题 作者 时间 类型 操作
Digitalization optical open loop test system for fiber optic gyroscope
ZHANG Deng-wei, SHU Xiao-wu, MU Xu-dong, LIU Cheng
期刊论文
Design and analysis of partially decoupled translational parallel mechanisms with single-loop structures
期刊论文
Development of a hydrodynamic model and the corresponding virtual software for dual-loop circulating
Shanwei Hu, Xinhua Liu
期刊论文
Loop theory and applications to some key problems of kinematic structure of kinematic chains
Huafeng DING, Zhen HUANG
期刊论文
Thermal response of steel framing members in open car park fires
Xia YAN; Marion CHARLIER; Thomas GERNAY
期刊论文
UPFC setting to avoid active power flow loop considering wind power uncertainty
Shenghu LI, Ting WANG
期刊论文
NC flame pipe cutting machine tool based on open architecture CNC system
Xiaogen NIE, Yanbing LIU
期刊论文
Cavitation in semi-open centrifugal impellers for a miniature pump
LUO Xianwu, LIU Shuhong, ZHANG Yao, XU Hongyuan
期刊论文
Experimental investigations on operating characteristics of a closed loop pulsating heat pipe
Yu WANG
期刊论文
Experimental study on flow behavior at open channel confluences
WANG Xiekang, WANG Xianye, LU Weizhen, LIU Tonghuan
期刊论文