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1

A Methodology to Estimate Permeability in Porous and Fissured Rock Specimens at Laboratory Scale

100%

Estévez-Ventosa X., González-Molano N. A., Blázquez-Pascual V., Alvarellos J., Alejano L. R., Estévez-Ventosa X., González-Molano N. A., Blázquez-Pascual V., Alvarellos J., Alejano L. R.

Archives of Mining Sciences

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2020

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vol. 65

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issue 4

2

Hydrodynamic and kinetic study of an elution of a high viscosity liquid from the sand bed using eluent of low viscosity

88%

Sęk J., Błaszczyk M., Bartos M.

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vol. 33

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issue 1

31-41

EN

The study was aimed to determine the hydrodynamic of water seepage through a porous bed saturated with different amounts of high viscosity liquids. An attempt was made to describe the process of seepage through beds saturated with oils using the theory of outflow of a liquid from the tank. It was assumed that the discharge coefficient will represent changes of flow resistance during the process. It was found that the dependence of this factor on time is linear. In the second part of this work kinetics of the seepage process was investigated. Dependence of oil concentrations, eluted from the deposit with the flowing water, on time has been evaluated. Thanks to these studies it was possible to determine the effectiveness of an elution of high viscosity liquids from porous beds using water as the washing out liquid.

3

Hydrodynamics of gas flow through anisotropic porous materials in phenomenological and numerical terms

88%

Wałowski G., Filipczak G.

Archives of Thermodynamics

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2018

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vol. 39

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issue 3

4

Chromatographic Behaviour and Analytical Method Development for Metformin HCl: Application to Permeation Studies through Caco-2 Cells

88%

Hamdan I. I., Farah D. a. G., Abu-Dahab R. A.-D.

Acta Poloniae Pharmaceutica - Drug Research

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2020

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vol. 77

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issue 1

11-21

EN

Metformin HCl (Mtf) is a polar compound with low bioavailability. Counter ions have been shown to improve the bioavailability of polar ionizable drugs. The goal of this work was to develop an HPLC method that is capable of separating and quantifying Mtf from a group of selected organic anions: diclofenac sodium (DS), citric acid (CA), hydroxyl cinnamic acid (HCA), 8-anilinonaphthalene-1-sulfonic acid (ANS),and trisodium phosphate (TSP). Thus, the effect of the mixture of anions on the transport of Mtf through Caco-2 cells could be studied. During the development of the method, interesting chromatographic behaviors of Mtf were observed using a polar stationary phase (Hypersil® SAS, C1). The developed method was validated and found to be linear in the range 2-100 µg/mL with good accuracy and precision. The method was applied for transport experiments of Mtf across Caco-2 cells in the presence and absence of organic anions. Apparent permeability coefficients (Papp) were calculated. The Papp of Mtf was increased in the presence of CA and DS from 3.37×10-6 cm/s to 5.08×10-6 and 4.25×10-6 cm/s respectively, while it was decreased to 1.9×10-6 cm/s (p-value 0.01) in the presence of HCA. Interestingly, the Papp for Mtf increased more than four-fold when present with both calcium and CA together, which might lead to significant improvement in the bioavailability of the drug.

5

Permeability of Sand-Clay Mixtures

75%

Kacprzak G., Boutin C., Doanh T.

Archives of Civil Engineering

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2010

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issue 4

6

Experimental study on sedimentation removal of pervious concrete

75%

Rama M., Shanthi V. M., Rama M., Shanthi V. M.

Archives of Civil Engineering

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2018

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vol. 64

|

issue 1

7

Hydrodynamic and kinetic study of an elution of a high viscosity liquid from the sand bed using eluent of low viscosity

75%

Sęk J., Błaszczyk M., Bartos M.

Chemical and Process Engineering

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2012

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issue 1

8

Experimental Study on the Effects of Vibrational Frequency on the Permeability of Gas-Containing Coal Rocks

75%

Bairu Z., Yang S., Beining W., Yongqi L., Bairu Z., Yang S., Beining W., Yongqi L.

Archives of Mining Sciences

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2021

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vol. 66

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issue 2

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A Methodology to Estimate Permeability in Porous and Fissured Rock Specimens at Laboratory Scale

Hydrodynamic and kinetic study of an elution of a high viscosity liquid from the sand bed using eluent of low viscosity

Hydrodynamics of gas flow through anisotropic porous materials in phenomenological and numerical terms

Chromatographic Behaviour and Analytical Method Development for Metformin HCl: Application to Permeation Studies through Caco-2 Cells

Permeability of Sand-Clay Mixtures

Experimental study on sedimentation removal of pervious concrete

Hydrodynamic and kinetic study of an elution of a high viscosity liquid from the sand bed using eluent of low viscosity

Experimental Study on the Effects of Vibrational Frequency on the Permeability of Gas-Containing Coal Rocks