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Encyclopedia results for Capillary

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Encyclopedia results for Capillary

  1. Alveolar capillary dysplasia

    Infobox disease Name Alveolar capillary dysplasia Image Caption DiseasesDB ICD10 ICD9 ICDO OMIM 265380 MedlinePlus MeshID Alveolar capillary dysplasia ACD , also congenital alveolar dysplasia is a very rare congenital malformation involving abnormal development of the capillary vascular system around the alveolus alveoli of the lung s. It is a rare cause of persistent pulmonary hypertension in infants . ref name pmid2915290 cite journal author Cater G, Thibeault DW, Beatty EC, Kilbride HW, Huntrakoon M title Misalignment of lung vessels and alveolar capillary dysplasia a cause of persistent pulmonary hypertension journal The Journal of Pediatrics volume 114 issue 2 pages 293 300 year 1989 month February pmid 2915290 doi 10.1016 S0022 3476 89 80800 5 url issn ref It also may be a rare cause of pulmonary hypoplasia . ref name pmid9050066 cite journal author Sirkin W, O Hare BP, Cox PN, Perrin D, Cutz E, Silver MM title Alveolar capillary dysplasia lung biopsy diagnosis, nitric oxide responsiveness, and bronchial generation count journal Pediatric Pathology & Laboratory Medicine Journal of the Society for Pediatric Pathology, Affiliated with the International Paediatric Pathology Association volume 17 issue 1 pages 125 32 year 1997 pmid 9050066 doi url issn ref The outcome is neonatal death . One of the longest surviving infants lived 2 months. ref name pmid9021581 cite journal author ... veins with alveolar capillary dysplasia journal Journal of Pediatric Surgery volume 32 issue ... one form of ACD. In some families, a form of ACD known as alveolar capillary dysplasia with misalignment ... of FOXF1 cause alveolar capillary dysplasia and other malformations journal American Journal of Human ... pulmonary vessels with alveolar capillary dysplasia language French journal Archives De P diatrie ... capillary dysplasia journal Journal of Pediatric Surgery volume 32 issue 1 pages 99 100 year 1997 ..., Zackai E, Ruchelli E title Misalignment of pulmonary veins with alveolar capillary dysplasia affected ...   more details



  1. Macrocephaly-capillary malformation

    infobox disease Name Macrocephaly capillary malformation Image Alt Caption DiseasesDB 34862 ICD10 ICD9 ICDO OMIM 602501 MedlinePlus eMedicineSubj eMedicineTopic MeshID GeneReviewsID GeneReviewsName Macrocephaly capillary malformation M CM is a multiple malformation syndrome causing abnormal body and head overgrowth and cutaneous , vascular , neurologic , and limb abnormalities. The disorder is assumed to have a genetic basis, but the precise genetic cause for M CM is unknown and diagnosis is currently based on clinical observations. Though not every patient has all features, commonly found signs include macrocephaly , congenital macrosomia , extensive cutaneous capillary malformation naevus flammeus or port wine stain type birthmark over much of the body a capillary malformation of the upper lip or philtrum is seen in many patients with this condition , body asymmetry also called hemihyperplasia or hemihypertrophy , polydactyly or syndactyly of the hands and feet, lax joints, doughy skin, variable developmental delay and other neurologic problems such as seizures and low muscle tone . History and Nomenclature This disorder was recognized as a distinct syndrome in 1997 and named macrocephaly cutis marmorata telangiectasia congenita or M CMTC. ref name pmid9354837 cite journal author Clayton Smith J, Kerr B, Brunner H, Tranebjaerg L, Magee A, Hennekam RC et al. title Macrocephaly with cutis marmorata, haemangioma and syndactyly a distinctive overgrowth syndrome. journal Clin Dysmorphol year 1997 volume 6 issue 4 pages 291 302 pmid 9354837 url http www.ncbi.nlm.nih.gov entrez eutils elink.fcgi?dbfrom pubmed&tool clinical.uthscsa.edu cite&retmode ref&cmd prlinks&id 9354837 ref ... ref&cmd prlinks&id 9129744 ref A new name, macrocephaly capillary malformation, was recommended in 2007 ... macrocephaly cutis marmorata telangiectatica congenita M CMTC as macrocephaly capillary malformation .... title Neuroimaging findings in macrocephaly capillary malformation a longitudinal study of 17 patients ...   more details



  1. Hyperkeratotic cutaneous capillary-venous malformation

    Hyperkeratotic cutaneous capillary venous malformation is a cutaneous condition characterized also by inherited cerebral capillary malformation s. ref name Bolognia cite book author Rapini, Ronald P. Bolognia, Jean L. Jorizzo, Joseph L. title Dermatology 2 Volume Set publisher Mosby location St. Louis year 2007 pages isbn 1 4160 2999 0 oclc doi accessdate ref See also Lowry MacLean syndrome List of cutaneous conditions References reflist Dermatology stub Category Cutaneous congenital anomalies ...   more details



  1. Capillary action through synthetic mesh

    Orphan date September 2011 Capillary action through synthetic mesh is the result of the intermolecular attraction between moisture and semi Organic compound Synthetic compounds synthetic polymers , causing a current of thermionic energy through a specific pathway within a mesh material. The combination of the adhesive forces and the surface tension that arises from cohesion produces the characteristic upward curve in a fluid, such as water. Capillarity is the result of cohesion of water molecules and adhesion of those molecules to the solid material forming the void. As the edges of the material are brought closer together, such as in a very narrow path, the interaction causes the liquid to be drawn away from the original source. The more narrow the pathway, the greater the rise of the liquid. Greater surface tension and increased ratio of adhesion to cohesion also result in greater rise. Synthetic materials using conductive polymer as found in polypyrrole to reduce liquid density to a manageable state. Clarify date February 2011 The force with which water is held by capillary action varies with the quantity of water being held. As part of a demonstration conducted by Bright Idea and Webb development Water entering a natural void, such as a pore within a synthetic mesh material, forms a film on the surface of the material surrounding the pore. The adhesion of the water molecules nearest the solid material is greatest. As water is added to the pore, the thickness of the film increases, the capillary force is reduced in magnitude, and water molecules on the outer portion of the film may begin to flow away from its source. As more water enters the pore the capillary force is reduced to zero when the pore is saturated, unless a hydrophilic body is introduced. The movement of moisture through the mesh is controlled by this capillary action. Sources for Reference See Wikipedia ... http www.nanowerk.com spotlight spotid 6371.php Capillary Action at the Nanoscale http www.iop.org ...   more details



  1. KCE

    KCE may refer to Karpagam College of Engineering Kinetic capillary electrophoresis King Country Energy Konami Computer Entertainment disambig ...   more details



  1. Microvessel

    Microvessel or microvasculature can refer to Arteriole , a small diameter blood vessel that extends and branches out from an artery and leads to capillaries Capillary , the smallest blood vessels Metarteriole , a vessel that links arterioles and capillaries Sinusoid blood vessel , similar to a capillary, but with a discontinuous endothelium Venule , a blood vessel that allows deoxygenated blood to return from the capillary beds to the larger blood vessels called veins Microcirculation , the system of smaller blood vessels that distribute blood within tissues disambig Long comment to prevent listing on Special Shortpages..........................................................................   more details



  1. Precapillary sphincter

    The precapillary sphincter is a band of smooth muscle that adjusts the blood flow into each capillary . ref http medical dictionary.thefreedictionary.com Precapillary sphincter Precapillary Sphincter definition . The Free Dictionary by Farlex. Medical Dictionary ref At the point where each true capillary originates from a metarteriole , a smooth muscle fiber usually encircles the capillary. This is called the precapillary sphincter. This sphincter can open and close the entrance to the capillary. Blood flow in a capillary changes as vasomotion occurs. ref PDF http www.aw bc.com info ip assignmentfiles cardiovascular Autoreg Cap Dynamics.pdf Autoregulation and Capillary Dynamics. Autoregulation and Capillary DynamicsPearson Education Inc., publishing as Benjamin Cummings ref The entire capillary bed may be bypassed by blood flow through arteriovenous anastomoses . A precapillary sphincter encircles each capillary branch at the point where it branches from the arteriole. Contraction of the precapillary sphincter can close the branches off to blood flow. If the sphincter is damaged or can not contract, blood can flow into the capillary bed at high pressures. When capillary pressures are high and this can be the result of gravity , fluid passes out of the capillaries into the Fluid compartments interstitial space , and edema or fluid swelling is the result. External links http www.ncbi.nlm.nih.gov pubmed 141891 Central neural influence on precapillary microvessels and sphincter . PubMed Abstract , American Journal of Physiology , 1977 Jul 233 1 H141 7. Baez S, Feldman SM, Gootman PM. References references Fundamentals of Anatomy & Physiology seventh edition , Frederic H. Martini Dzulfitree B. Ahmad, Cyberjaya University College of Medical Sciences 07 08 Category Muscular system Category Angiology Category Circulatory system muscle stub ...   more details



  1. Jurin's law

    unreferenced date January 2011 Image Capillarity.svg thumb Capillary rise or fall in a tube. Jurin s law describes the rise and fall of a liquid within a thin capillary tube. Named after its discoverer James Jurin . This law is expressed as math qquad h frac 2 gamma cos theta r. rho.g math where h is the liquid height is the liquid surface tension is the contact angle of the liquid on the tube wall is the liquid density r is the tube radius g is the gravitational acceleration . This law is valid if the tube radius is smaller than the capillary length . See also Capillary action Category Fluid dynamics Category Hydrology Hydrology stub fr Loi de Jurin physics stub ...   more details



  1. CEMS

    CEMS may refer to Capillary electrophoresis mass spectrometry CEMS Global Alliance in Management Education Rochester Area Colleges Center for Excellence in Math and Science Continuous emissions monitoring system Coordinated Electronic Music Studio disambig fr CEMS ...   more details



  1. Metarteriole

    Image Illu capillary.jpg thumb 300px A Metarteriole or arterial capillary is a short vessel that links arterioles and venules. Instead of a continuous tunica media, they have individual smooth muscle cells placed a short distance apart, each forming a precapillary sphincter that encircles the entrance to that capillary bed. Constriction of these sphincters reduces or shuts off blood flow through their respective capillary beds. This allows the blood to be diverted to elsewhere in the body. External links eMedicineDictionary metarteriole http www.sci.sdsu.edu class bio590 pictures lect5 5.3.html Diagram at sci.sdsu.edu http www.uni mainz.de FB Medizin Anatomie workshop EM EMArteriole.html Histology at uni mainz.de Category Arteries circulatory stub pl Metaarteriola pt Metarter ola ...   more details



  1. Leverett J-function

    DISPLAYTITLE Leverett J function Context date October 2009 In petroleum engineering , the Leverett J function is a dimensionless function of water saturation describing the capillary pressure ref cite journal author M.C. Leverett title Capillary behaviour in porous solids journal Transactions of the AIME issue 142 pages 159 172 year 1941 ref , math J S w frac p c S w sqrt k phi sigma cos theta math where math S w math is the water saturation measured as a fraction, math p c math is the capillary pressure in Pascal unit pascal , math k math is the Permeability fluid permeability measured in Square metre m , math phi math is the porosity 0 1 , math sigma math is the surface tension and math theta math is the contact angle . The function is important in that it is constant for a given saturation within a reservoir, thus relating reservoir properties for neighboring beds. The Leverett J function is an attempt at extrapolating capillary pressure data for a given rock to rocks that are similar but with differing permeability, porosity and wetting properties. It assumes that the porous rock can be modelled as a bundle of non connecting capillary tubes, where the factor math sqrt k phi math is a characteristic length of the capillaries radii. See also Amott test References reflist External links http www.ux.uis.no s skj ResTek1 v03 Notater Tamu.Lecture.Notes Capillary.Pressure Lecture 16.ppt Category Petroleum engineering fluiddynamics stub ...   more details



  1. Portal venous system

    dablink This article discusses the portal venous systems in general. For the system involving the liver, see Hepatic portal system . In the circulatory system of animals, a portal venous system occurs when a capillary bed pools into another capillary bed through vein s, without first going through the heart. Both capillary beds and the blood vessel s that connect them are considered part of the portal venous system. They are relatively uncommon as the majority of capillary beds drain into veins which then drain into the heart , not into another capillary bed. Portal venous systems are considered venous because the blood vessels that join the two capillary beds are either vein s or venule s. Examples of such systems include the hepatic portal system and the hypophyseal portal system . Unqualified, portal venous system often refers to the hepatic portal system. For this reason, portal vein most commonly refers to the hepatic portal vein . The functional significance of such a system is that it transports products of one region directly to another region in relatively high concentrations. If the heart was involved in the blood circulation between those two regions, those products would be spread around the rest of the body. In humans The final common pathway for transport of venous blood from spleen, pancreas, gallbladder and the abdominal portion of the gastrointestinal tract with the exception of the inferior part of the anal canal is through the portal vein. The portal vein is formed by the union of the superior mesenteric vein and the splenic vein posterior to the neck of the pancreas at the level of vertebra body LII. Ascending towards the liver, the portal vein passes posterior to the superior part of the duodenum and enters the right margin of the lesser omentum, it is anterior to the omental foramen and posterior to both the bile duct, which is slightly to the right, and the hepatic artery proper, which is slightly to the left. On approaching the liver, the por ...   more details



  1. Electrocapillarity

    Electrocapillarity or Electrocapillary phenomena are the phenomena related to changes in the surface energy or interfacial tension of the Dropping mercury electrode DME as the electrode potential changes or the electrolyte electrolytic solution composition and concentration change. The term Electro Capillary is used to describe the change in mercury element mercury Hg electrode potential as a function of the change in the surface or interfacial tension of the Hg determined by the capillary action capillary rise method. The phenomena are the historic main contributions for understanding and validating the models of the structure of the electrical double layer. The phenomena are related to the electrokinetic phenomena and consequently to the colloid chemistry. Interfacial tension Outdated units, see talk page The interfacial surface tension, St, dyne cm sup 1 sup , can be calculated by applying the equation of capillary rise method when the contact angle 0 br St h r g d where h cm is the height of Hg column above the Hg meniscus in the capillary r cm is the radius of capillary d g cm sup 3 sup is the Hg density g is the acceleration due to gravity, g 981  cm s sup 2 sup . The circuit contains Hg electrode as the ideally polarizable electrode and a reference electrode as the non polarizable electrode. Thus, when an external voltage is applied, only EM S of Hg solution interface is changed. See also Electrical double layer Electrokinetic phenomena Colloid chemistry Liquid metal electrode Rotating disk electrode References references Modern Electrochemistry, Volume 2, J.O M. Bockris and A.K.N. Reddy, Plenum Rosetta Edition, 2000. Theoretical Electrochemistry, L.I. Antropov, English Edition, Mir Publishers, Moscow. Category Electrochemistry ...   more details



  1. Pressure injection cell

    Orphan date March 2012 Pressure Injection Cells , sometimes referred to as bomb loading devices are used in proteomics proteomic research to enable controlled dispensing of small volume liquid samples. Applications Using high pressure, pressure injection cells are used for two applications densely packing nanobore capillary columns micro columns with solid phase particles for use in Liquid chromatography mass spectrometry LC MS analysis and precisely infusing microliter samples directly from microcentrifuge tubes into Mass spectrometer mass spectrometers without additional transfers, wasted sample, or contact with metallic surfaces which adsorb some negatively charged molecules such as phosphopeptides. ref Watson, J. Throck & Sparkman, David O. Introduction to Mass Spectrometry Instrumentation, Applications, and Strategies for Data Interpretation, Wiley, 2007. ref Components A typical pressure injection cell holds a micro tube or a vial in its central chamber ref http www.nextadvance.com public image column packing pressure injection cell operation.jpg Cross section of pressure injection cell showing how gas pressure is used to inject samples or pack columns . Next Advance.com. Retrieved 2012 03 13. ref . A small magnetic stir bar can be used to keep the particles in suspension. Operation The pressure cell is connected to a source of compressed gas such as Argon, Helium or Nitrogen . A capillary is placed through a ferrule in the cap so that one end is in contact with the liquid in the tube or vial. The distal end of the capillary is frit fritted to retain the particles while packing. Pressure from the compressed gas can be regulated to adjust the flow rate of the sample into the capillary. ref http proteomicsresource.washington.edu docs pressurecell UWPR Pressure Cell for packing capillary columns.pdf Pressure cell for packing capillary columns schematic , University of Washington Proteomics Resource. Retrieved 2012 03 13. ref References Reflist Category Analytical ...   more details



  1. CZE

    CZE may refer to Czech Republic ISO abbreviation Czech language Capillary electrophoresis Cryptozoic Entertainment , a trading card game manufacturer dab Long comment to avoid being listed on short pages de CZE fr CZE it CZE lv CZE lt CZE ja CZE ...   more details



  1. Convoluted tubule

    Unreferenced stub auto yes date December 2009 Orphan date December 2009 Convoluted tubule is the compound of a metanephridium which is wrapped with Capillary capillaries . The process of reabsorption occurs in this part of the metanephridium. References reflist DEFAULTSORT Convoluted Tubule Category Annelid anatomy Annelid stub animal anatomy stub ...   more details



  1. Lippmann electrometer

    Refimprove date December 2009 File Kapillarelektrometer.jpg thumb 300px Drawing of a Lippmann electrometer A Lippmann electrometer is a device for detecting small rushes of electric current and was invented by Gabriel Lippmann in 1873 . ref Fritz Scholz, http books.google.it books?id 9t5nzn32ZPoC Electroanalytical Methods Guide to Experiments and Applications , 2nd ed., Springer, 2010. ISBN 3642029140 ref The device consists of a tube which is thick on one end and very thin on the other. The thin end is designed to act as a Capillary action capillary tube. The tube is half filled with mercury element mercury with a small amount of dilute sulfuric acid above the mercury in the capillary tube. Metal wires are connected at the thick end into the mercury and at the thin end into the sulfuric acid. When the pulse of electricity arrives it changes the surface tension of the mercury and allows it to leap up a short distance in the capillary tube. This device was used in the first practical ECG machine which was invented by Augustus Desir Waller . References references See also Electrocapillarity DEFAULTSORT Lippmann Electrometer Category Electrophysiology Category Measuring instruments Physics stub de Kapillarelektrometer it Elettrometro di Lippmann nl Capillaire elektrometer ro Electrometru Lippmann ...   more details



  1. Phreatic zone

    The phreatic zone , or zone of saturation , is the area in an aquifer , below the water table , in which relatively all pores and fractures are saturated with water. The phreatic zone may fluctuate with changes of season and during wet and dry periods. See also Phreatic Capillary fringe Infiltration hydrology Category Aquifers Category Hydrogeology Hydrology stub it Falda freatica ...   more details



  1. Fåhræus?Lindqvist effect

    Deleted image removed File FLE2.jpg thumb right Red blood cell s flowing in a capillary. Cell free layer near the capillary walls contributes to lowering the viscosity in blood flow in small capillaries Should not be confused with F hr us effect The F hr us Lindqvist effect IPAc en icon f r e . s l n d k v s t ref http www.medilexicon.com medicaldictionary.php?t 28015 ref is an effect where the viscosity of a fluid, in this case blood , changes with the diameter of the tube it travels through in particular there s a decrease of viscosity as the tube s diameter decreases only if the vessel ... in narrow capillary tubes. The American Journal of Physiology 96 562 568 ref Their study ... for the study of human physiology . They forced blood through fine glass capillary tubes connecting two reservoirs. Capillary diameters were less than 250 m, and experiments were conducted at sufficiently ... is the volumetric flow rate math Delta P math is the pressure drop across the capillary math L math is the length of capillary math mu e math is the effective viscosity math R math is the radius pi ... on the fluid being tested, the capillary diameter, and the flow rate or pressure drop . However ... of their data. First, math mu e math decreased with decreasing capillary radius, R . This decrease was most pronounced for capillary diameters 0.5mm. Second, the tube hematocrit i.e., the average hematocrit in the capillary was always less than the hematocrit in the feed reservoir. The ratio of these two ... to the capillary wall that is depleted of red blood cell s. Because the cell free layer is red cell ... flow resistance within the capillary , with the net effect that the effective viscosity is less ... the particles towards the center of the capillary . This is known as the Segre Silberberg effect . It is clear that red blood cell s cannot pass through the capillary wall, which implies that the centers ... that, on average, there will be more red blood cell s near the center of the capillary than ...   more details



  1. Starling equation

    filtration or net fluid movement J sub v sub . If positive, fluid will tend to leave the capillary filtration . If negative, fluid will tend to enter the capillary absorption . This equation has a number ... variables According to Starling s equation, the movement of fluid depends on six variables Capillary hydrostatic pressure P sub c sub Interstitial hydrostatic pressure P sub i sub Capillary oncotic ... value indicates a highly water permeable capillary. A low value indicates a low capillary permeability. The filtration coefficient is the product of two components capillary surface area capillary ... water so the effective capillary oncotic pressure is lower than the measured capillary oncotic pressure ... name boron sub i sub mmHg ref name boron arteriole arteriolar end of capillary 35 2 28 0.1 venule venular end of capillary 15 2 28 3 Some albumin escapes from the capillaries and enters the interstitial ... end of a capillary , there is a net driving force math P c P i sigma pi c pi i math outwards from the capillary ... outwards from the capillary as a whole, which also results in that more fluid exits a capillary than ... for explaining physiological phenomena happening at the capillary e.g. the formation of edemas ...   more details



  1. Viscotherm

    Orphan date April 2010 Unreferenced date November 2009 Viscotherms are used to determine the viscosity of a fluid this is done by a small pump being fitted throughout the system of the fluid of which the density is required. This small pump will then produce a constant pressure this is then forced through a capillary , where the viscosity can be measured by taking pressure readings a certain points off the capillary. This type of viscotherm is used heavily in the maritime industry, as larger vessels use heavy grades of diesel fuel known as medium diesel oil MDO or heavy fuel oil HFO . These fuels are very viscous and need to be heated so they do not solidify, and also need to be further heated to be used as a combustion product for the various engines on the vessel. Category Viscosity ...   more details



  1. Washburn constant

    orphan date May 2010 Merge to Washburn s equation date May 2010 In physics , the Washburn constant may be included in Washburn s equation , an equation which describes capillary action capillary flow in porous materials . It is calculated as follows math 10 4 um cm 1N m 2 68947.6 dynes cm 2 0.1450 38 math ref Micromeritics, Autopore IV User Manual , September 2000 . Section B, Appendix D Data Reduction, page D 1. Note that the addition of 1N m2 is not given in this reference, merely implied ref ref Micromeritics, A new method of interpolation and smooth curve fitting based on local procedures , Journal of the Association of Computing Machinery 1970 . Volume 17 4 , pp.589 602. ref See Washburn s equation for derivation and applications. References references Category Physics physics stub ...   more details



  1. Tourniquet test

    for the constricting device tourniquet Image Positive tourniquet test.gif thumb 250px A positive tourniquet test on the right side of a patient with dengue fever . Note the increased number of petechia . A tourniquet test also known as a Rumpel Leede Capillary Fragility Test or simply a capillary fragility test determines capillary fragility. It is a clinical medical diagnosis diagnostic method to determine a patient s bleeding haemorrhagic tendency. It assesses fragility of capillary walls and is used to identify thrombocytopenia a reduced platelet count . The test is defined by the World Health Organisation WHO as one of the necessary requisites for diagnosis of Dengue fever . A blood pressure cuff is applied and inflated to a point between the Systole medicine systolic and diastolic blood pressure s for five minutes. The test is positive if there are 10 or more petechiae per square inch. In DHF the test usually gives a definite positive result with 20 petechiae or more. ref http www.searo.who.int LinkFiles Regional Guidelines on Dengue DHF prevention & control searo 29.pdf ref This test does not have high specificity. Interfering factors with this test are women who are premenstrual, postmenstrual and not taking hormones, or those with sun damaged skin, since all will have increased capillary fragility. ref Pagana, & Pagana, 1998 Tsai, 2000 ref The test remains an essential part of the assessment of a patient who may have dengue haemorrhagic fever . References reflist Category Physical examination Med diagnostic stub de Rumpel Leede Test dv fr Test du tourniquet pl Objaw Rumpla Leedego ...   more details



  1. Vascular recruitment

    Direct evidence for insulin induced capillary recruitment in skin of healthy subjects during physiological ... skeletal muscle perfusion by capillary recruitment. Coggins M, Lindner J, Rattigan S, Jahn L, Fasy E, Kaul S, Barrett E. Diabetes. 2001 Dec 50 12 2682 90. ref The exact extent of capillary recruitment ... muscle. ref Visceral and truncal subcutaneous adipose tissue are associated with impaired capillary ... ref Physiology of pulmonary capillary recruitment. Wagner WW Jr, Herv P. Rev Mal Respir. 1989 ... 27 1 120 9. ref and increase pulmonary capillary protein leak. ref Effects of pulmonary vascular recruitment on gamma scintigraphy and pulmonary capillary protein leak. Sugerman HJ, Tatum JL, Strash ... Counterpoint There is not capillary recruitment in active skeletal muscle during exercise. Poole ... that vascular recruitment exists. ref Point There is capillary recruitment in active skeletal muscle ...   more details



  1. Incipient wetness impregnation

    Orphan date November 2006 Incipient wetness impregnation IW or IWI , also called capillary impregnation or dry impregnation, is a commonly used technique for the synthesis of heterogeneous catalyst s. Typically, the active metal precursor is dissolved in an aqueous solution aqueous or organic solution organic solution. Then the metal containing solution is added to a catalyst support containing the same pore volume as the volume of solution that was added. Capillary action draws the solution into the pores. Solution added in excess of the support pore volume causes the solution transport to change from a capillary action process to a diffusion process, which is much slower. The catalyst can then be dried and calcination calcined to drive off the volatility chemistry volatile components within the solution, depositing the metal on the catalyst surface. The maximum loading is limited by the solubility of the precursor in the solution. The concentration profile of the impregnated compound depends in the mass transfer conditions within the pores during impregnation and drying. References Refbegin cite book last de Jong first Krijn title Synthesis of Solid Catalysts year 2009 publisher Wiley isbn 978 3527320400 cite book last Regalbuto first John title Catalyst Preparation Science and Engineering year 2007 publisher CRC Press isbn 978 0849370885 cite book last Ertl first Gerhard title Preparation of Solid Catalysts year 1999 publisher Wiley isbn 978 3527298266 coauthors Kn zinger, Helmut Weitkamp, Jens Refend Category Catalysts ...   more details




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