... media microchannel flow Navier-Stokes equations mass transfer microchannel bioreactor porous wall Damkohler number Porous structures are used in reactors for bioengineering applications. A perfusion bioreactor was designed ( 1 2 ) with fibrous matrix walls in the channels, for tissue...

...Weiping Ding; Xiaoming Zhou; Shelly Heimfeld; Jo-Anna Reems; Dayong Gao Hollow fiber modules are commonly used to conveniently and efficiently remove cryoprotective agents (CPAs) from cryopreserved cell suspensions. In this paper, a steady-state model coupling mass transfers across cell and hollow...

... to be known, but both are difficult to measure in the industry. Mathematical modeling of heat and mass transfer helps to determine local freeze-drying conditions and predict effects of operation policy, and equipment and recipe changes on drying time and product quality. Representative pellets situated...

...: Co-Cultivation of Hepatocytes and Nonparenchymal Cell,” FASEB J. 13, pp. 1883–1900 ) to avoid species insufficiency based on basic fibroblast growth factor (bFGF). The mass transfer effectiveness was found to be higher with more numbers of micropattern units. The optimal condition for micropatterned...

... . Turitto , V. T. , 1981 , “ Blood Viscosity, Mass Transport and Thrombogenesis ,” Progress in Hemostasis and Thrombosis , T. M. Spaet , ed., Grune & Stratton , New York , Vol. 6 , pp. 139 – 174 . Basmadjian , D. , 1990 , “ The Effect of Flow and Mass Transfer...

... bifurcations are potentially more susceptible to atherogenesis and steady-state ATP transport reproduces essential features of time-averaged pulsatile transport for small Womersley number. Larger Womersley numbers appear to be an important factor in time-dependent mass transfer. For ADP, a similar condition...

... in a two-generation geometry by comparing the average gas-phase mass transfer coefficients with the experimental values. ASPM predicted mass transfer coefficients within 20% of the experimental values. The flow and concentration variables in the ASPM were solved using Galerkin finite element method...

... through the third ventricle cerebrospinal fluid by prolonging residence times of the communicated hormones. 13 06 2006 16 02 2007 biological fluid dynamics biomedical MRI brain models mass transfer patient diagnosis We have shown elsewhere ( 1 ) that the cerebrospinal fluid...

... interaction (FSI) program code by the finite element method (FEM). Next, based on the obtained results, we further simulated LDL transport using a mass transfer analysis code by the FEM. We analyzed the PHEM in comparison with a rigid model. For the blood flow, stagnation was observed downward of the bends...

...-convective models of gas exchange in PLV. The mass transfer rate is nearly constant throughout the breath when Pe≫1, but when Pe≪1 nearly 100% of the transport occurs during inspiration. A range of respiratory rates (RR), including those relevant to high frequency oscillation (HFO)+PLV, tidal volumes V T...

... 07 October 2004 08 03 2005 biothermics cellular biophysics freezing mass transfer optical microscopes biological techniques The first practical light microscopes were invented and applied for laboratory studies of micro-organisms in the 1660’s by van Leeuwenhoek and Hooke...

... to the width of the cavity and by the ratio of cavity volume to duct volume. While weak, the slowly rotating flow in the cavity is thought to be important to the convective transport of heat and mass transfer to, or from, the walls of the cavity. The relevance of these finding to particle transport...

... to another. The purpose of our research is to investigate the flow and mass transfer characteristics of an IMO device, using realistic and correct computational models; to determine the relevant parameters of the IMO device, and to reduce the complexity of the fundamental variables in order to develop...

...Zhijie Liao; Churn K. Poh; Zhongping Huang; Peter A. Hardy; William R. Clark; Dayong Gao To develop a more efficient and optimal artificial kidney, many experimental approaches have been used to study mass transfer inside, outside, and cross hollow fiber membranes with different kinds of membranes...

...Elizabeth M. Lutostansky; Gerhard Karner; Gerhard Rappitsch; David N. Ku; Karl Perktold The mass transfer behavior in the recirculation region downstream of an axisymmetric sudden expansion was examined. The Reynolds number, 500, and Schmidt number, 3200, were selected to model the mass transfer...

... finite element analysis mass transfer porosity flow through porous media orthopaedics Intervertebral Disc Endplate Cartilage Poroelastic Fluid Flow Biomechanics Finite Element Analysis A load applied to the spinal motion segment results in compressive stresses...