permeance definition
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Permeance In a magnetic circuit, permeance is a measure of the quantity of magnetic flux for a number of current-turns. A magnetic circuit almost acts as though the flux is 'conducted', therefore permeance is larger for large cross sections of a material and smaller for longer lengths.
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- 1 A selectively permeable membrane (also called a semipermeable membrane) is a membrane that allows some substances to pass through easily while other substances pass through very slowly or not at all. 2  Osmosis, on the other hand, refers to the diffusion of the solvent across a selectively permeable membrane.
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- semipermeable. adj. 1. (Biology) (esp of a cell membrane) selectively permeable. (ˌsɛm iˈpɜr mi ə bəl, ˌsɛm aɪ-). adj.emipermeable. adj. 1. (Biology) (esp of a cell membrane) selectively permeable. (ˌsɛm iˈpɜr mi ə bəl, ˌsɛm aɪ-). adj.
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permeability Definition of PERMEABILITY. 1. : the quality or state of being permeable. 2. : the property of a magnetizable substance that determines the degree in which it modifies the magnetic flux in the region occupied by it in a magnetic field.See permeability defined for kids. ADVERTISEMENT.. : the quality or state of being permeable. 2. : the property of a magnetizable substance that determines the degree in which it modifies the magnetic flux in the region occupied by it in a magnetic field.
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- Definition of Pervade transitive verb To pass or flow through, as an aperture, pore, or interstice; to permeate. transitive verb To pass or spread through the whole extent of; to be diffused throughout.
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semipermeable membrane semipermeable membrane. Etymology: L, semi + permeare, to pass through. a membrane that prevents the passage of some substances but allows the passage of others based on differences in the size, charge, or lipid-solubility of the substances.
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- Air Permeability - The porosity of a fabric as estimated by the ease with which air passes through it. Air permeability measures the warmth of blankets, the air resistance of parachute cloth, the wind resistance of sailcloth, etc. as measured on standard testing equipment. Algaecide - Kills algae.
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Selective Permeability Ability to allow the movement of some substances but not of others, particularly across membranes. Generally permeability is determined by a molecule's size as well as specific chemistry. Lipid bilayers tend to be permeable to small, nonpolar substances while impermeable to large, polar substances. Figure legend: The selective permeability of a lipid bilayer, one unadorned with transport proteins.
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What is differentially permeable? The permeabilty of something refers to an object's ability to pass liquids through it. Something that is semi-permeable will pass the liquid of a solution through, while filtering out either some or all of the solvents in it.
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Biology A selectively permeable membrane is a membrane that allows some substances to pass through easily, while other substances pass through very slowly or not at all. All cell membranes, including the plasma membrane, are selectively permeable. selectively permeable membrane is a membrane that allows some substances to pass through easily, while other substances pass through very slowly or not at all. All cell membranes, including the plasma membrane, are selectively permeable.
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permeate verb (used with object), permeated, permeating. 1. to pass into or through every part of: Bright sunshine permeated the room. 2. to penetrate through the pores, interstices, etc., of. 3. to be diffused through; pervade; saturate:
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Permeability (earth sciences) Permeability is the property of rocks that is an indication of the ability for fluids (gas or liquid) to flow through rocks. High permeability will allow fluids to move rapidly through rocks. Permeability is affected by the pressure in a rock. The unit of measure is called the darcy, named after Henry Darcy (1803-1858).
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What are the overall powers of the legislative branch? Legislative Branch: Headed by Congress, which includes the House of Representatives and the Senate. The main task of these two bodies is to make the laws. Its powers include passing laws, originating spending bills (House), impeaching officials (Senate), and approving treaties (Senate).
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How Many? A Dictionary of Units of Measurement Â© Russ  Rowlett and the University of North Carolina at Chapel  HillTable of  ContentsAbout the DictionaryUsing the DictionaryG Permeance is defined to be the gas flow rate through the material, per unit of area and per unit of pressure difference across the material. The unit is equal to 10 4 barrer per centimeter, or 10-6 cm·s-1 ·cmHg-1, or, in SI units, 7.5005 x 10-16 m·s-1 ·Pa-1. gauge (ga) [1] a traditional unit measuring the interior diameter of a shotgun barrel.
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permeate infiltrate-pass into or through by filtering or permeating; the substance infiltrated the material. filter, permeate, sink in, percolate-pass through; Water permeates sand easily.
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- peta-petabitpetabits per secondpetabytepetabytes per second. perveance. In an electron tube, a magnitude which determines the saturation current which can flow for a given geometry. It is a proportionality constant equal to J/V3/2, where J is current density, and V is collector voltage. This value changes as a given tube ages.
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Nursing Assistant Certification Status Read Answers to Related Questions. How can I verify if my California CNA certification is still valid? How does one renew their certified nursing assistant (CNA/CNT) license in the state of Tennessee? I worked at a nursing home after I completed the CNA class and got my CNA license in 1994 or 1995.
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Permeable pavingupdate Permeable paving is a range of sustainable materials and techniques for permeable pavements with a base and subbase that allow the movement of stormwater through the surface.In addition to reducing runoff, this effectively traps suspended solids and filters pollutants from the water.ermeable paving is a range of sustainable materials and techniques for permeable pavements with a base and subbase that allow the movement of stormwater through the surface.
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- Permeable Landscaping is that which allows water and air to penetrate the soil. It may be populated with trees, plants, rocks or other natural or manmade materials. It is the natural state of land that permits the earth to breathe.e-introducing permeable landscape where it has been removed is extremely valuable to the health of cities, and is easily and immediately achievable. It simply requires the removal of impermeable materials and replacement with soil, plant material, rock or porous manmade materials.
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Examples of permeable rocks? Permeable rocks are defined rocks that have large enough interconnected spaces between particles to allow the movement of gas or liquid through them.
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- Permeability is a measure of a soil's or rock's ability to transmit a fluid, usually water. Often the term hydraulic conductivity is used when discussing groundwater and aquifer properties. Hydraulic conductivity simply assumes that water is the fluid moving through a soil or rock type.enerally, soil refers to the top few feet of the land surface. The soil acts as a natural filter to screen out many substances that mix with the water. But water will transport some contaminants into the groundwater.
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Permittivity & Permeability Permittivity is a measure of how easy or difficult it is to form an electric field inside of a medium. Likewise, permeability is a measure of the ability to form a magnetic field inside of a medium. Permittivity ε and ε0. Permittivity is determined by how much a medium can polarize in response to an electric field. In cgs units, ε is unitless. In SI units, ε is in units of Farads/meter. This highlights the fundamental difference between the two measures of permittivity in the different unit systems.
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What is the reducing agent in the following reaction? Pyruvate + NADH + H+ ? Lactate + NAD+ Choose one answer. a. selectively permeable (or differentially permeable), allowing some substances to pass through easily, while completely or partially excluding others. Although there are several methods by which solutes may enter or leave cells, the most common is diffusion. Diffusion is the movement of a substance (e.g. molecules and ions) from a region of higher
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Permeability Permeability is an important property of barrier coatings. The permeability of a barrier coating's film depends on its moisture vapor transmission rate. The effectiveness of a coating in preventing permeation depends on how closely and tightly bound the molecules of the resin are to one another.
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- per·va·sive. adj. Having the quality or tendency to pervade or permeate: the pervasive odor of garlic. [From Latin. , past participle of. , to pervade; see pervade .]. per·va′sive·ly adv. per·va′sive·ness n.
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- Origin of permeate. Latin permeāre permeāt-to penetrate per-through; see per-. meāre to pass; see mei-1 in Indo-European roots. Related Forms: per′me·ant per′me·a′tive. adjective. per′me·a′tion. noun