نتایج جستجو برای: variable permeability

تعداد نتایج: 308446  

Tedious calculations and simulations are needed to obtain an efficient production scenario and/orproper field development strategy. Capacitance-resistance model (CRM) is proved to be a fastreservoir simulation tool using just the field-available data of production and injection rates. Thisapproach sets a time-constant and a weighting factor (or well-pair connectivity parameter...

Journal: :Plant physiology 1977
B E Michel

A model that relates hydraulic permeability to water flux and to gradients in pressure potential and solute potential was tested using soybean (Glycine max) plants. Water flux was varied by additions of polyethylene glycol 6,000 around one portion of a divided root system and by changing the light intensity and CO(2) concentration around the plants. The data are compatible with the model only i...

In the present paper, we have studied MHD free convective two dimensional unsteady viscous incompressible flows through a porous effect bounded by an infinite vertical porous plate with constant suction. The permeability of the porous medium fluctuates in time about a constant mean, and the viscosity of fluid is assumed to vary as a linear function of temperature. The flow is permitted under th...

Journal: :Applied and Computational Mechanics 2023

This paper investigates the nonlinear dispersion of a pollutant in non-isothermal incompressible flow temperature-dependent viscosity fluid rectangular channel filled with porous materials. The Brinkman-Forch-heimer effects are incorporated and is assumed to be variably permeable through channel. External injection, heat sources radiative flux Rossland approximation accounted for. system partia...

Journal: :IOSR Journal of Mechanical and Civil Engineering 2017

Journal: :Journal of veterinary pharmacology and therapeutics 2011
E Neirinckx C Vervaet J Michiels S De Smet W Van den Broeck J P Remon P De Backer S Croubels

The aim of this study was to assess the feasibility of the Ussing chamber technique for the determination of the jejunal permeability of passively absorbed, high permeability model compounds (acetaminophen and ketoprofen) in different animal species. Additionally, electrophysiological measurements and histological examination of pre- and post-incubation tissue specimens were performed. Apparent...

Journal: :Analytical sciences : the international journal of the Japan Society for Analytical Chemistry 2006
Hiroshi Kobayashi Tohru Ikegami Hiroshi Kimura Takeshi Hara Daisuke Tokuda Nobuo Tanaka

Monolithic silica columns and their use in high peak-capacity HPLC separations are reviewed. Monolithic silica columns can potentially provide higher overall performance than particle-packed columns based on the variable external porosity and variable through-pore size/skeleton size ratios. The high permeability of monolithic silica columns resulting from the high porosity is shown to be advant...

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