单词 | perfusion |
释义 | perfusionn. 1. a. The action of pouring or sprinkling (a fluid, etc.) on, over, or through something; an instance of this; spec. the pouring of water over a person in baptism (opposed to immersion). Now also: permeation. Also figurative. Now rare. ΘΚΠ the world > matter > liquid > liquid flow > action or fact of pouring or being poured > [noun] > on or over perfusion1574 affusion1652 the world > movement > motion in a certain direction > movement over, across, through, or past > [noun] > through any medium or space > permeation perfusion1574 permeation1623 interfusion1817 permeance1853 society > faith > worship > sacrament > baptism > kinds of baptism > by pouring water over > [noun] perfusion1574 infusiona1770 1574 T. Newton tr. G. Gratarolo Direct. Health Magistrates & Studentes 9 There should ensue an oyntement or perfusion of temperate oyle. 1607 R. Parker Scholasticall Disc. against Antichrist i. ii. 112 What, and serueth the signe of the water..for the time only of the perfusion? 1632 tr. G. Bruele Praxis Medicinæ 291 The perfusion of naturall heate..doth giue life to the wormes. 1711 J. Gale Refl. Wall's Hist. Infant-baptism 134 This rite was wont to be performed by immersion, and not by perfusion. 1775 E. Barry Observ. Wines Ancients 294 Leave to others the active parts of the perfusions, detersions, &c. 1855 W. C. Duncan Brief Hist. Baptists 135 Christians of the East have never admitted the validity of perfusion and sprinkling as baptism. 1889 A. H. Drysdale Hist. Presbyter. Eng. 439 Perfusion (pouring or sprinkling) was not accounted unlawful. 1958 A. Montagu Cultured Man 54 The backfiring of trucks and buses, and the whistling and groaning of brakes—all to the accompaniment of a perfusion of essence of gasoline exhaust fumes. 1999 D. de la Motte & J. M. Przyblyski Making News 354 This astonishing increase in the perfusion of the social field by journalism. ΘΚΠ the world > matter > liquid > liquid flow > action or fact of pouring or being poured > [noun] > that which has been poured over perfusion1583 douse1835 1583 P. Barrough Methode of Phisicke iii. lxiv. 161 Apply about the priuities, fomentes, perfusions, and ointementes. 1706 J. Floyer Ψυχρολουσια (ed. 2) i. 145 He advises them, who are burnt by the Extream Heat of the Sun, to use a Perfusion of Cold Water all over. 1724 J. Floyer Medicina Gerocomica xviii. 107 Use the Perfusion of warm Water, or Hydroleum, to smooth the Rugosities of the Skin. 1804 H. H. Brackenridge Mod. Chivalry II. i. i. 7 These habiliments were of the people of the town, who had hung them up to the dew, in order to take off the musk of a pole-cat which had affected them from the perfusions of one of these animals. 1848 Ecclesiologist 8 99 Wine for the ablution of the chalice of the mass, and also another chalice to receive the perfusion of the fingers. 2. a. Medicine and Physiology. The passage of a liquid, esp. blood, through an organ or tissue; the process of doing this artificially, esp. with treated blood or a blood substitute. Also: the treatment of a patient by a continuous transfusion of prepared blood. Frequently attributive. ΘΚΠ the world > health and disease > healing > medical treatment > surgery > transfusion > [noun] > continuous perfusion1893 perfusing1913 1893 Proc. Royal Soc. 53 402 Perfusion experiments on the heart. 1925 Proc. Royal Soc. B. 98 93 The work of Hamburger..on the perfusion of frogs' kidneys has shown the part played by the relative properties of Ca, K and NaHCO3 in the Ringer's fluids used in the perfusion. 1972 Brit. Med. Jrnl. 1 Jan. 23/2 The liver was..cooled by perfusion with a chilled electrolyte solution..and then taken to the perfusion apparatus in the patient's room. Perfusion was started after 30–40 minutes of cold ischaemia. 1974 V. B. Mountcastle et al. Med. Physiol. (ed. 13) II. lix. 1391/2 A normal distribution pattern undoubtedly exists both for degrees of ventilation [in the alveoli] and for degrees of perfusion. 1990 Jrnl. Developmental Physiol. 14 50/1 The placenta..was transferred into a small perfusion chamber filled with thermostated physiological saline. b. Chemistry. The process of passing a liquid through a chromatographic substrate consisting of porous particles.Recorded earliest in perfusion chromatography n. at Compounds. ΚΠ 1990 Jrnl. Chromatogr. 519 1 The technique involves the flow of liquid through a porous chromatographic particle, and has thus been termed ‘perfusion chromatography’. 2000 Jrnl. Chromatogr. 880 169 Perfusion media are available in different chromatographic modes: reversed-phase, ion-exchange, hydrophobic interaction, and affinity. Compounds perfusion chromatography n. Chemistry a technique of high-speed liquid chromatography in which the mobile phase is passed through porous particles of the substrate. ΚΠ 1990 [see sense 2b]. 1991 Nature 18 Apr. 634 Perfusion chromatography is a technique based on fluid dynamics for reducing stagnant mobile phase mass transfer in liquid chromatography. This is achieved by using supports with large pores that allow mobile phase to flow through particles. 1999 Proc. National Acad. Sci. U.S.A. 96 8277/2 Further fractionation after treatment of AMS with 1.0M LiClO4..was performed by ion-exchange perfusion chromatography. This entry has been updated (OED Third Edition, December 2005; most recently modified version published online March 2022). < n.1574 |
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