نتایج جستجو برای: external flow

تعداد نتایج: 662253  

Journal: :Nanoscale 2014
Wenbin Huang Guanglong Wang Fengqi Gao Zhongtao Qiao Gang Wang Li Tao Minjiang Chen Fang Yu Huaichao Yang Lianfeng Sun

Three-dimensional graphene foam (GF) is synthesized by CVD. When water flows through GF, electricity is induced. The direction of the induced current is dominated by the flow direction of water; the value of induced current is related to the flow velocity but has no relationship with the flow direction and external bias voltage.

Journal: :Journal of the American College of Cardiology 1989
A D Guerci H R Halperin R Beyar C Beattie J E Tsitlik E C Wurmb N C Chandra M L Weisfeldt

Aortic flow and pressure relations and aortic diameter were examined during sinus rhythm, internal cardiac massage, vest cardiopulmonary resuscitation, conventional manual cardiopulmonary resuscitation and high impulse manual cardiopulmonary resuscitation in 14 anesthetized large dogs. During sinus rhythm and during internal cardiac massage, ascending aortic flow and pressure increased simultan...

2008
Qingfang Wu Xavier Litrico Alexandre M. Bayen

This article presents a method to estimate flow variables for an open channel network governed by first-order, linear hyperbolic partial differential equations and subjected to periodic forcing. The selected external boundary conditions of the system are defined as the model input; the flow properties at internal locations, as well as the other external boundary conditions, are defined as the o...

Journal: :Japanese heart journal 1968
H Ueda S Hatano T Koide T Gondaira

1) External recording of cerebral clearance was performed after Kr85 saline solution injection into the common carotid artery. Clearance curve thus obtained was divided into 3 exponentials. The 3rd phase represents mainly clearance of the area perfused with external carotid artery and the rest of the curve after subtraction of the 3rd phase can be treated in the similar way to that of reported ...

2008
EVGENY V. VOTYAKOV EGBERT ZIENICKE YURI B. KOLESNIKOV

Many practical applications exploit an external local magnetic field – magnetic obstacle – as an essential part of their construction. Recently, Votyakov et al. (2007) have demonstrated that the flow of an electrically conducting fluid influenced by an external field can show several kinds of recirculation. The present paper reports a 3D numerical study whose some results are compared with an e...

Journal: :Lab on a chip 2013
Sung-Jin Kim Ryuji Yokokawa Shuichi Takayama

We present experiments and theory of a constant flow-driven microfluidic oscillator with widely tunable oscillation periods. This oscillator converts two constant input-flows from a syringe pump into an alternating, periodic output-flow with oscillation periods that can be adjusted to between 0.3 s to 4.1 h by tuning an external membrane capacitor. This capacitor allows multiple adjustable peri...

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