Permeability measurements
Assessing accuracy of gas-driven permeability measurements: a comparative study of diverse Hassler-cell and probe permeameter devices
... intrinsic permeability. A minimum of three (bet- ter five) subsequent measurements at equal flow rates but at different back-pressure steps and resulting differential pres- sures can be performed with ...
11
Investigation of moisture condition and Autoclam sensitivity on air permeability measurements for both normal concrete and high performance concrete
... air permeability is not expected to vary when the RH of the con- crete is between 40% and 60% [31], it was susequently decided that the drying and conditioning procedures proposed were applicable to HPC prior to ...
9
Complex Permittivity and Permeability Measurements and Numerical Simulation of carbonyl iron rubber in X-Band frequency
... Carbonyl iron powder was chosen as absorbing filler and silicon rubber was used as polymeric matrix. Both components are commercially available. The densities of the employed carbonyl iron and silicon matrix are 7.8 and ...
7
Perturbation of EMC Microstrip Patch Antenna for Permittivity and Permeability Measurements
... and permeability of barium hexaferrite in the 8–12 GHz range was determined by using perturbation of electromagnetically coupled Ag thick film patch antenna due to ...
10
Assessment of mechanical properties of isolated bovine intervertebral discs from multi parametric magnetic resonance imaging
... Methods: Sixty IVDs were harvested from bovine tails, and randomly separated in four groups (in-situ, digested-6h, digested-18h, digested-24h). Multi-parametric MRI acquisitions were used to quantify the relaxation times ...
14
The value of fault analysis for field development planning
... These permeability measurements provide important calibration points for the 21 fault property assessment, which was used to calculate transmissibility multipliers TM that were 22 incorp[r] ...
40
Gas diffusivity and permeability through the firn column at Summit, Greenland: measurements and comparison to microstructural properties
... and permeability measurements were made on the full firn core shortly after collection, and then again on select samples used in this study in ...two measurements was ...of permeability and ...
10
Anisotropic Structure of Glass Wool Determined by Air Permeability and Thermal Conductivity Measurements
... There is a need of studying material structural properties in order to analyze and interpret thermal behavior. The present work presents three main characteristics of glass wool structure: volume ratio of the solid phase ...
8
Low-Loss Complex Permittivity and Permeability Determination in Transmission/Reflection Measurements with Time-Domain Smoothing
... broadband measurements to characterize materials, there remain inherent issues to be ...and permeability measurements with the conventional T/R ...
11
A technique for evaluating the hydraulic conductivity of saprolite
... Part of the investigation was to collect "undisturbed" samples of saprolite and to use the heat-shrinkable plastic to encase the cores for laboratory permeability measurements[r] ...
41
STRUCTURAL AND MAGNETIC STUDIES OF COBALT SUBSTITUTED NICKEL ZINC FERRITES
... the permeability measurements, it is observed that with increasing cobalt content, the domain wall energy increases and the value of initial permeability μi ...
9
PERMEABILITY OF DENTINE
... influences permeability of dentine ...the permeability of dentine in live dogs decreased with ...the permeability of dentine in fibrinogen-depleted dogs was shown to be greater than that in which no ...
10
A CT Method to Measure Hemodynamics in Brain Tumors: Validation and Application of Cerebral Blood Flow Maps
... In the third part of this investigation, we evalu- ated interstudy variabilities of the CT CBV and CBF measurements in brain tumors. The variability of the CBV measurements was low (7.3%) com- pared with ...
9
Radon concentration in soil gas and radon exhalation rate at the Ravne Fault in NW Slovenia
... 7.4 × 10 −13 m 2 for soil permeability, and 86–138 nSv h −1 for gamma dose rate. The concentrations of 222 Rn in soil gas were found to be lower than the average for Slovenia. Be- cause the deformation zones ...
5
Study on the Critical Production Calculation Method of the Water Flooding Reservoir with Gas Cap
... As shown in Figure 4, for horizontal wells, when the water cut is the same, the critical production increases with the increment of the horizontal permeability and the ratio of vertical permeability to ...
12
Dynamic Susceptibility Contrast Enhanced Perfusion and Conventional MR Imaging Findings for Adult Patients with Cerebral Primitive Neuroectodermal Tumors
... in permeability without increases in volume, and in- creases in both, to varying ...highest permeability, and vice ...but permeability moderately correlated with maximal enhancement and not with ...
9
Non-contrast MR imaging of blood-brain barrier permeability to water
... measuring and modeling dynamic contrast-enhanced (DCE) MRI signal quantitatively (11). While this method is elegantly sensitive to major breakdowns of BBB (to the extent that large molecules like gadolinium ...
36
Investigations on the Durability Parameters of Different Grades of Concrete
... oxygen) permeability, water permeability, carbonation depth, chloride permeability, and/or resistivity are often conducted to develop correlations among these ...
9
The Relation of Spirostomum Ambiguum to the Hydrogen Ion Concentration (Alkaline Range)
... It is therefore suggested that increased permeability of the cell wall causes the destruction of Spirostomum ambiguum and that, in the present experiments, this increase in permeability [r] ...
13
Swimbladder Permeability to Oxygen
... The low over-all conductance resides in the low diffusion constant, K, of the middle layer of the wall submucosa while the outer and inner layers tunica externa and mucosa have diffusion[r] ...
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