A method can include receiving porosimetry data for a range of pressures that spans a transition zone defined at least in part by a high-pressure end of a first pressure zone and a low-pressure end of a second pressure zone; detecting at least one artifact in the transition zone; computing accuracy information for the highpressure end of a first pressure zone and the low-pressure end of a second pressure zone; computing a pressure-volume adjustment based at least in part on the accuracy information; and outputting a pressure-volume relationship in the transition zone based at least in part on the pressure-volume adjustment.

The present technology generally relates to a porous medium parameter measurement device comprising one or more component selected from: a porous conductive component; a porous non-conductive component; and a selective component. The one or more component is in operative communication with each one of the one or more component and with a porous medium through a plurality of pores allowing a porous medium solution to reach diffusion equilibrium between the porous medium and each of the one or more component. The one or more component allows direct measurement of a multiplicity of parameters of the porous medium solution.

Systems and methods for obtaining a calibrated permittivity dispersion measurements of a subsurface formation by measuring an impedance of the subsurface formation using a borehole imager at a first one or more frequencies; measuring a permittivity of the subsurface formation using a reference tool at a second one or more frequencies; calculating a first dispersion curve of the permittivity of the subsurface formation based at least in part on the measured impedance of the subsurface formation at the first one or more frequencies; extrapolating the permittivity of the subsurface formation to the second one or more frequencies using the calculated first dispersion curve of the permittivity of the subsurface formation; calibrating the permittivity of the subsurface formation based at least in part on the extrapolated permittivity of the subsurface formation and the measured permittivity of the subsurface formation; and generating a second dispersion curve of the permittivity of the subsurface formation based at least in part on one or more of the calibrated permittivity of the subsurface formation at the first one or more frequencies and the measured permittivity of the subsurface formation at the second one or more frequencies.

A non-contact fiber permeability measurement system includes a mold device, a fluid supplying device, a capacitance detecting device and a permeability converting device. The mold device includes an upper plate, a lower plate and a fluid inlet. The lower plate is parallel to and disposed below the upper plate for forming an accommodating space disposing a measured fibrous fabric insulated against the upper plate and the lower plate. The fluid inlet is disposed through the upper plate. The fluid supplying device is connected to the mold device and for providing a fluid perfused from the fluid inlet into the accommodating space. The capacitance detecting device is electrically connected to the upper plate and the lower plate. The permeability converting device is electrically connected to the capacitance detecting device and for receiving the capacitance detected via the capacitance detecting device to convert the capacitance to a permeability.

Test apparatus for testing porous material such as used in roadway base or building foundations may be deployed in the field at various test sites. The test apparatus includes electrodes that contact the porous material under test and a sensor unit that supplies electromagnetic signals to the porous material. Response signals reveal electrical parameters such as complex impedance which can be equated to material properties such as density and moisture content. Reference may be made to empirical correlations made in laboratory tests using the same test apparatus to enable the effects of the test apparatus on the measurement to be accounted for. The electrodes may include flexible coplanar electrodes that reduce air gaps when in contact with the porous material.

A method for determining water-filled porosity and water salinity in a well includes obtaining complex dielectric permittivity of earth formations, either from dielectric measurements representative of well cores, or from dielectric well logs; selecting a dielectric mixing law for the index number m; plotting a m-th root of complex dielectric permittivity at a specified frequency in the complex domain, wherein m is an index number; determining a matrix permittivity, a water salinity, and a water-filled porosity based on the complex dielectric permittivity and the dielectric mixing law; and displaying the water salinity and the water-filled porosity.

A non-contact fiber permeability measurement system includes a mold device, a fluid supplying device, a capacitance detecting device and a permeability converting device. The mold device includes an upper plate, a lower plate and a fluid inlet. The lower plate is parallel to and disposed below the upper plate for forming an accommodating space disposing a measured fibrous fabric insulated against the upper plate and the lower plate. The fluid inlet is disposed through the upper plate. The fluid supplying device is connected to the mold device and for providing a fluid perfused from the fluid inlet into the accommodating space. The capacitance detecting device is electrically connected to the upper plate and the lower plate. The permeability converting device is electrically connected to the capacitance detecting device and for receiving the capacitance detected via the capacitance detecting device to convert the capacitance to a permeability.

Provided is a method for screening drugs, more particularly, a method for screening drugs by measuring capacitance of an endothelial cell layer at a frequency region of 100 Hz to 5 kHz to screen a drug affecting paracellular permeability of the endothelial cell layer or a drug penetrating through a paracellular path.

A method can include receiving porosimetry data for a range of pressures that spans a transition zone defined at least in part by a high-pressure end of a first pressure zone and a low-pressure end of a second pressure zone; detecting at least one artifact in the transition zone; computing accuracy information for the high-pressure end of the first pressure zone and the low-pressure end of the second pressure zone; computing a pressure-volume adjustment based at least in part on the accuracy information; and outputting a pressure-volume relationship in the transition zone based at least in part on the pressure-volume adjustment.

Test apparatus for testing porous material such as used in roadway base or building foundations may be deployed in the field at various test sites. The test apparatus includes electrodes that contact the porous material under test and a sensor unit that supplies electromagnetic signals to the porous material. Response signals reveal electrical parameters such as complex impedance which can be equated to material properties such as density and moisture content. Reference may be made to empirical correlations made in laboratory tests using the same test apparatus to enable the effects of the test apparatus on the measurement to be accounted for. The electrodes may include flexible coplanar electrodes that reduce air gaps when in contact with the porous material.