apparent porosity open porosity

apparent porosity - translation - English-French Dictionary
apparent porosity - translation - English-French Dictionary

en The invention relates to a method for modifying a cellular polymer foam with apparent porosity, preferably made of polyurethane, which includes the following steps: a) providing a cellular polymer foam with apparent porosity (a); b) placing said cellular polymer foam in contact with at least one compound (b) selected among the compounds comprising at least one catechol unit, and preferably .

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Detection of open or closed porosity in low- κ dielectrics ,
Detection of open or closed porosity in low- κ dielectrics ,

The presence of open porosity in a porous interlayer dielectric (ILD) can seriously degrade the ultimate performance and reliability of a device

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Using Geophysical Logs to Estimate Porosity, ^Vater ,
Using Geophysical Logs to Estimate Porosity, ^Vater ,

Using Geophysical Logs to Estimate Porosity, ^Vater Resistivity, and Intrinsic Permeability United States Geological Survey , Books and Open-File Reports Section US Geological Survey Federal Center Box 25425 Denver, CO 80225 , nd Apparent porosity from a density log, dimensionless nn Apparent porosity from a neutron log, dimensionless .

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Porosity of refractories - Springer
Porosity of refractories - Springer

POROSITY OF REFRACTORIES K K Strelov , The structure of the pores is characterized by the magnitude and the form of the porosity (total, closed, open, capillary, channel, etc), the dimensions and distribution of the pores in regard to size, , apparent porosity is given in standards

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KGS--Geological Log Analysis--Nuclear Porosity Logs
KGS--Geological Log Analysis--Nuclear Porosity Logs

The correction of the apparent limestone porosity to true porosity in other lithologies is then made by incorporating information from the neutron porosity, as will be described later in this lesson In the example above, we see a density porosity index scaled in porosity units that is ,

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Properties of Refractories | ispatguru
Properties of Refractories | ispatguru

Properties of Refractori , Frequently, not the values of the true porosity but those of apparent porosity (open porosity) are used as the application property The apparent porosity includes only those holes which can be infiltrated by water and not the closed hol

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POROSITY AND PERMEABILITY IN THE BASEMENT ROCKS AT ,
POROSITY AND PERMEABILITY IN THE BASEMENT ROCKS AT ,

POROSITYAND PERMEABILITY IN THE BASEMENT ROCKSAT THE , open fault zones and breccia zones produced by hydraulic fracturing (Grindley Browne, 1976) provide much of the permeability Fig 2E , Apparent porosity (the volume of pores interconnected with the sample surface and

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Crain's Petrophysical Handbook - Porosity Basics
Crain's Petrophysical Handbook - Porosity Basics

porosity basics Porosity is the volume of the non-solid portion of the rock filled with fluids, divided by the total volume of the rock Primary porosity is the porosity developed by the original sedimentation process by which the rock was created

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Formation evaluation neutron porosity - Wikipedia
Formation evaluation neutron porosity - Wikipedia

Neutron porosity measurement employs a neutron source to measure the hydrogen index in a reservoir, which is directly related to porosity The Hydrogen Index (HI) of a material is defined as the ratio of the concentration of hydrogen atoms per cm 3 in the material, to that of pure water at 75 °F

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ASTM C830 - 00(2016) Standard Test Methods for Apparent ,
ASTM C830 - 00(2016) Standard Test Methods for Apparent ,

31 Apparent porosity, water absorption, apparent specific gravity, and bulk density are primary properties of refractory shap These properties are widely used in the evaluation and comparison of product quality and as part of the criteria for selection and use of refractory products in a variety of industrial applications

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The sintering of open and closed porosity in UO2: The ,
The sintering of open and closed porosity in UO2: The ,

The apparent activation energy for open pore sintering was significantly higher than that for volume or grain boundary diffusion, this being attributed to systematic differences resulting from ,

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Porosity Applied Paper Technology
Porosity Applied Paper Technology

More open sheets allow air to pass through the sheet more rapidly The porosity test is sometime used on coated paper or coated paperboard These products are not generally porous, so the apparent porosity measurement is in reality a measurement of air leakage from the clamp

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Proper Hair Care Routine For High Porosity Hair | Trials N ,
Proper Hair Care Routine For High Porosity Hair | Trials N ,

Jul 23, 2015· Avoid Heat: In most instances high porosity hair has experienced some form of trauma that has caused the cuticle to drastically open and remain opened Either your hair has been damaged by heat, or chemicals and adding heat will only make the situation worse

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ISO 18754:2013(en), Fine ceramics (advanced ceramics ,
ISO 18754:2013(en), Fine ceramics (advanced ceramics ,

NOTE These methods are not appropriate for the determination of an apparent porosity greater than 10 % For materials with higher porosity, the accuracy of the measurement may not be satisfactory , The method may also not give a satisfactory open porosity result if ,

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Neutron porosity logs - petrowikiorg
Neutron porosity logs - petrowikiorg

Neutron log interpretation Because we are stuck with values reported in apparent neutron porosity, that is how we typically interpret them Most interpretation schemes assume that the neutron porosity is scaled in apparent limestone units; that means a limestone matrix and water-filled porosity

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How Porosity Is Measured - Schlumberger
How Porosity Is Measured - Schlumberger

porosity is lower than the density porosity, the curves cross over each other, giving rise to the term crossover The shale effect counteracts the crossover effect; however, petrophysicists use other measurements to correct for the shale volume and determine the effective porosity The gas effect can also be masked by the presence of deep

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Apparent Porosity - APPO
Apparent Porosity - APPO

Apparent Porosity - APPO This test procedure was employed in the Foresight Ceramic Database and now is available for those having an account at Insight-Live Accumulating test data using the variables defined in these procedures enables us to create tools that enable you to compare the physical properties of materials and recip

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Estimation of total, open-, and closed-pore porosity of ,
Estimation of total, open-, and closed-pore porosity of ,

Open-pore porosity coincided with total porosity in the range of high moisture contents It means that above 10 g/g closed-pore porosity could be neglected However, below critical moisture content (026 g/g in our experiment), open-pore porosity rapidly dropped to 015 ± 007, while closed-pore porosity increased to 028 ± 006

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Porosity of ceramics: Under what circumstances will the ,
Porosity of ceramics: Under what circumstances will the ,

True porosity is a measure of the total of all pores in a material Apparent porosity is a measure of the volume of the pores that contact a surface They will be different if there is a significant volume of (usually smaller) pores that are 'closed off' to the outside .

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What is Porosity? - Definition from Corrosionpedia
What is Porosity? - Definition from Corrosionpedia

Porosity is the open spaces between grains or trapped in grains in a microstructure — the presence of tiny openings or spaces within a material Porous materials can absorb fluids or ,

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What Is Porosity Measured In? - YouTube
What Is Porosity Measured In? - YouTube

Jul 15, 2018· Approaches, and the apparent porosity measurements were made by variations of 16 sep 2014 development well characterized reference samples, these samples with multiple techniqu

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Formation evaluation neutron porosity - Wikipedia
Formation evaluation neutron porosity - Wikipedia

Formation evaluation neutron porosity In the field of formation evaluation , porosity is one of the key measurements to quantify oil and gas reserv Neutron porosity measurement employs a neutron source to measure the hydrogen index in a reservoir, which is directly related to porosity

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Determining the apparent density and open porosity of ,
Determining the apparent density and open porosity of ,

The present authors determined the open porosity and apparent density of magnesite clinker of differ- ent degrees of sinterability obtained by burning it in shaft furnaces fired on liquid fuel A relationship was determined between the apparent density 7, open porosity P, ,

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Effect of Porosity on the Stiffness of Cast Steel
Effect of Porosity on the Stiffness of Cast Steel

Porous cast steel specimens are mechanically tested having apparent elastic moduli reduced between 17 and 61 pct Analysis of radiographs and tomography is used to measure and reconstruct the porosity distribution in these test specimens

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2Density and porosity - Suranaree University of Technology
2Density and porosity - Suranaree University of Technology

30/07/52 Density and porosity/STRattanachan 9 Apparent solid Volume = = the difference between dry weight ( D ) and the immersed weight ( I ) of piece , Apparent Porosity = Ratio of open pore volume to total volume % App Porosity = open pore vol x 100 Total vol

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Effect of Open Porosity of Y2O3 Ceramic on the Apparent ,
Effect of Open Porosity of Y2O3 Ceramic on the Apparent ,

The effect of open porosity of Y 2 O 3 ceramic on the apparent contact angle and interaction between molten Ti47Al alloy and Y 2 O 3 ceramic substrates under pure Ar was investigated by using a sessile drop method at 1600 °C

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How to measure the apparent porosity and bulk density of ,
How to measure the apparent porosity and bulk density of ,

It can be precise if you precise equipments and avoid errors: use the most precise scale and avoid gas buble trapping for apparent porosity, eg by addind the solid in an certain amount of liquid .

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EFFECTS OF POROSITY ON CRITICAL WBGT AND APPARENT ,
EFFECTS OF POROSITY ON CRITICAL WBGT AND APPARENT ,

EFFECTS OF POROSITY ON CRITICAL WBGT AND APPARENT EVAPORATIVE RESISTANCE Thomas Bernarda, Candi Ashleya, Joseph Trentacostab, Vivek Kapurb, Stephanie Tewc a University of South Florida, Tampa FL 33612 USA; b DuPont Central Research and Development, E I duPont de Nemours and Company, Inc, Wilmington, DE 19898 USA;

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porosity logs - density neutron Flashcards | Quizlet
porosity logs - density neutron Flashcards | Quizlet

porosity logs - density neutron STUDY PLAY , LOW (lowers apparent porosity) and HIGH density reading SHALE EFFECTS ON NPHI , in a 100% water bearing limestone, the neutron reads the correct porosity; in a 100% sandstone, the porosity is wrong and must be corrected for lithology and so on

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Bulk density/ open porosity - ReStaR
Bulk density/ open porosity - ReStaR

The apparent porosity or open porosity (oPo) is the volume of the open pores, into which a liquid can penetrate, as a percentage of the total volume of the refractory This property is important when the refractory is in contact with molten charge and slag

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