单词 | monophasic |
释义 | monophasicadj. 1. (Of an electric current or signal) exhibiting a single phase; (of an electrical device) operating on a single phase. Cf. monophase adj. ΘΚΠ the world > matter > physics > electromagnetic radiation > electricity > electrical engineering > phase > [adjective] monophasic1883 monophase1902 1883 Philos. Trans. (Royal Soc.) 173 35 (table) Character of variation. Monophasic, −39·1. Diphasic, +11·7, −21·2. 1900 Nature 26 July 290/2 So producing a monophasic variation of considerable E.M.F. 1994 IEEE Trans. Rehabilit. Engin. 2 92 Using a tripolar electrode configuration and monophasic rectangular current pulses in acute canine experiments. 2. Physiology. Designating or relating to (a record of) a nerve impulse that is of the same sign throughout, and experimental arrangements devised to give such records. ΘΚΠ the world > life > biology > biological processes > action of nervous system > [adjective] > electrical phenomena electromotive1800 neuroelectric1843 bioelectric1849 rheoscopic1851 anelectrotonic1862 monophasic1888 off1903 on1903 bioelectrical1910 neuroelectrical1914 rheobasic1917 myoelectric1955 myoelectrical1970 1888 Philos. Trans. 1887 (Royal Soc.) B. 178 237 The review of these examples [of electrometer records of beating hearts] shows (1) that our instrument was perfectly capable of giving the record of diphasic variations, (2) that in some cases only a monophasic variation is revealed. 1915 W. M. Bayliss Princ. Gen. Physiol. xii. 380 If electrode B is on a spot [of the nerve] which has been killed, the wave of negativity..disappears in the killed area, so that the only electrical effect seen is that due to the becoming negative of spot A and consists, therefore, of only the first half..of the diphasic response; it is..‘monophasic’. 1932 Jrnl. Cellular & Compar. Physiol. 1 177 Local asphyxia at one of the leading-off electrodes renders a nerve potential record monophasic even more effectively than crushing does. 1950 Jrnl. Gen. Physiol. 33 654 The problem of obtaining a monophasic lead, by which is meant one in which no membrane changes at the distal electrode are recorded, is one of great importance. 1974 V. B. Mountcastle et al. Med. Physiol. (ed. 13) I. ii. 39/1 Monophasic and diphasic recording of extracellular actional potentials in nerve fibers. 1997 Jrnl. Cardiovascular Pharmacol. 29 795 Monophasic action potential of the right ventricle..and left ventricular pressure were continuously monitored. 3. Physical Chemistry. Of a substance or mixture: consisting of a single phase (phase n.2 4). ΚΠ 1910 Proc. Royal Soc. B. 83 104 A point is reached at which the two phases assume the same chemical composition, and the system becomes monophasic. 1950 Science 20 Jan. 73/2 The monophasic systems of solution photometry. 1979 Applic. Surface Sci. 3 121 In the case of slightly endothermic monophasic alloys this is accompanied by a smooth concentration gradient over several subsurface layers. 1997 Physica B. 240 6/2 Our studies..indicate an insulating behaviour in the entire region of Ge substitution in which the samples are monophasic. 4. Science. Of a process, or a curve representing it: occurring in a single phase; not marked by two or more stages of different character. ΚΠ 1937 Proc. Royal Soc. B. 122 499 The reaction is strictly monophasic, taking the form of an abrupt fall in growth rate to a level which remains constant for long periods. 1967 Proc. National Acad. Sci. U.S.A. 57 873 At higher concentrations..this decay pattern is replaced by monophasic kinetics. 1993 Jrnl. Fish Biol. 42 279 In this type of experiment the number of data points allow the determination of only a monophasic decay slope. This entry has been updated (OED Third Edition, December 2002; most recently modified version published online March 2022). < |
随便看 |
|
英语词典包含1132095条英英释义在线翻译词条,基本涵盖了全部常用单词的英英翻译及用法,是英语学习的有利工具。