Determination of properties

In this section, we describe our experimental and analysis methods to determine spatially dependent porosity and saturation distributions, permeability functions and saturation-dependent multiphase flow properties the relative permeability and capillary pressure functions. 

If the amount of fluid within a fully saturated permeable medium is known as a function of position, the spatially resolved porosity distribution can be determined. If the medium is saturated with two fluids, and the signal from one can be distinguished, the fluid saturation can be determined. In this section, we will develop a method to determine the amount of a single observed fluid using MRI, and demonstrate the determination of porosity. In Section 4.1.4.3, we will demonstrate the determination of saturation distributions for use in estimating multiphase flow functions. 

We can perform spatially resolved Carr-Purcell-Meiboom-Gill (CPMG) experiments, and then, for each voxel, use magnetization intensities at the echo times to estimate the corresponding number density function, P(t), which represents the amount of fluid associated with the characteristic relaxation time t. The corresponding intrinsic magnetization for the voxel, M0, is calculated by 

We represent the NMR relaxation distribution by the continuous number density function, P( t), of characteristic relaxation time t. Our measurements correspond to a series of CPMG echoes, represented by 

The CPMG pulse sequence is composed of the initial 90° radiofrequency (rf) excitation pulse followed by a series of 180° rf pulses spaced to allow a train of 

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The determination of properties for each cut enables curves to be obtained for yields and properties as well as curves for iso-properties that are useful in the economic analyses of crude oils. 

The extraction of characteristics contains the determination of properties and characteristics which describe the casting defect. Within this investigations three different groups of characteristics were determined which include information about the geometry, the distribution of gray values, and the contour of the defects (fig. 9). 

ASTM D3835, Determination of Properties of Thermoplastic Materials by Capillay RJ)eometer, Vol. 8.02, ASTM, Philadelphia, Pa., 1994. 

ISO/DIS 1874-2, Plastics Polyamide (PM) Moulding and Extrusion Materials, Part 2 Preparation of Test Specimens and Determination of Properties, International Standards Organization, Geneva, Switzedand, 1994. 

Characterisation covers a wide field of science and technology and interacts from the synthesis stage through the analysis of structure to the determination of properties. Characterisation allows one to observe, control and model (including "closed-loop" backward interaction) all the complex interrelationships of materials science. 

Except the method of endgroup analysis all the above methods are based on the determination of properties of polymer solution. The Molecular weight of the polymer is related to its chain length or to the degree of polymerisation (DP) defined as the ratio between the Molecular weight of polymer and that of the monomer. 

DIN 53 019 Tl Messung von Viskositaten und FlieBkurven mit Rotationsviskosimetern mit Standardgeometrie. ISO 8961-1987 Plastics - Polymer dispersions Definition and determination of properties. 

Of all the solvents used by electrochemists, water is the most important for understanding the metal/solution interface. Therefore, it is the behavior of water molecules at the interface that is mainly discussed in the following section. The role of other solvents in the determination of properties of the metal/solution interface is described in detail in Section 2. 

ISO 1872-1 1993 Plastics - Polyethylene (PE) moulding and extrusion materials - Part 1 Designation system and basis for specifications ISO 1872-2 1997 Plastics - Polyethylene (PE) moulding and extrusion materials - Part 2 Preparation of test specimens and determination of properties ISO 1969 2004 Fibre ropes - Polyethylene - 3- and 4-strand ropes ISO 3458 1976 Assembled joints between fittings and polyethylene (PE) pressure pipes -Test of leakproofness under internal pressure ISO 3459 1976 Polyethylene (PE) pressure pipes - Joints assembled with mechanical fittings - Internal under-pressure test method and requirement ISO 3501 1976 Assembled joints between fittings and polyethylene (PE) pressure pipes -Test of resistance to pull out... 

ISO 8986-2 1995 Plastics - Polybutene (PB) moulding and extrusion materials - Part 2 Preparation of test specimens and determination of properties... 

ISO 10366-1 2002 Plastics - Methyl methacrylate-acrylonitrile-butadiene-styrene (MABS) moulding and extrusion materials - Part 1 Designation system and basis for specifications ISO 10366-2 2003 Plastics - Methyl methacrylate-acrylonitrile-butadiene-styrene (MABS) moulding and extrusion materials - Part 2 Preparation of test specimens and determination of properties... 

CF Duffy, S Gafoor, DP Richards, H Admadzadeh, R O Kennedy, EA Arriaga. Determination of properties of individual liposomes by capillary electrophoresis with postcolumn laser-induced fluorescence detection. Anal Chem 73 1855-1861, 2001. 

Experimental Procedures for Determination of Properties of Detonation Waves are discussed in Refs 3, 32, 35, 44, 57, 67, 68,... 

Occasionally, determination of properties of the aqueous solution in equilibrium with the solid, such as pH, conductivity, or concentration of ionic species is also of interest—in particular, in the monitoring of cleaning and consolidation of archaeological artifacts. 

Fig. 5. Calculation path for determination of property change AM by residual properties (eq. 135).

Experimental procedures for determination of properties of detonation waves see Refs 3, 32, 35,44, 57,67,68,69,75,94,95a 96 4 D724-D730... 

Determination of Properties of Transition States of Reacting Molecules. Much of the theory of the rate of chemical reactions is based on the notion that the transformation from reactant to products passes through a particular geometry of the excited reactant molecule, called the transition state. Until recently there were no experimental tools with which the transition state could be studied, but it is now possible to determine some of the prop-... 

GAINES, G.L., Insoluble Monolayers at Liquid-Gas Interfaces, Interscience (1966) ALEXANDER, A.E. and HIBBERD, G.E., Determination of properties of insoluble monolayers at mobile interfaces , in reference 17, Part 5, pp. 557-589... 

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