(n.) The loadstone; a species of iron ore (the ferrosoferric or magnetic ore, Fe3O4) which has the property of attracting iron and some of its ores, and, when freely suspended, of pointing to the poles; -- called also natural magnet.
(n.) A bar or mass of steel or iron to which the peculiar properties of the loadstone have been imparted; -- called, in distinction from the loadstone, an artificial magnet.
Example Sentences:
(1) By presenting the case history of a man who successively developed facial and trigeminal neural dysfunction after Mohs chemosurgery of a PCSCC, this paper documents histologically the occurrence of such neural invasion, and illustrates the utility of gadolinium-enhanced magnetic resonance scanning in patient management.
(2) The tumors were identified by magnetic resonance (MR) imaging.
(3) Twenty patients with non-small cell bronchogenic carcinoma were prospectively studied for intrathoracic lymphadenopathy using computed tomography (CT) and magnetic resonance imaging (MRI).
(4) The role of magnetic resonance imaging is also discussed, as is the pathophysiology, management, and prognosis in the elderly patient.
(5) An innovative magnetic resonance imaging technique was applied to the measurement of blood flow in the abdominal aorta.
(6) Sequelae of chemo- and radiotherapy were only depicted by magnetic resonance imaging.
(7) Magnetic polyethyleneimine (PEI) microcapsules have been developed for trapping electrophilic intermediates in the gastrointestinal (GI) tract.
(8) Our data support the hypothesis that evoked and epileptiform magnetic fields result from intradendritic currents oriented perpendicular to the cortical surface.
(9) We conclude that exposure for 20 min to a 1.5-T static magnetic field does not alter body and skin temperatures in man.
(10) Magnetic resonance imaging of the spinal cord clearly demonstrated the entire lesion.
(11) Right ventricular volumes were determined in 12 patients with different levels of right and left ventricular function by magnetic resonance imaging (MRI) using an ECG gated multisection technique in planes perpendicular to the diastolic position of the interventricular septum.
(12) In April 1986, magnetic resonance imaging (MRI) of the thorax and shoulder girdle was presented to the 99th Annual Meeting of the American Association of Anatomists.
(13) In addition, a 31P nuclear magnetic resonance (NMR) technique was applied to investigate the in vivo energy metabolism of the graft.
(14) Line broadening detected in several of the high-field nuclear magnetic resonance spectra was attributed to cis-trans isomerization.
(15) The correlation of posterior intervertebral (facet) joint tropism (asymmetry), degenerative facet disease, and intervertebral disc disease was reviewed in a retrospective study of magnetic resonance images of the lumbar spine from 100 patients with complaints of low back pain and sciatica.
(16) In this critical review of human in vivo nuclear magnetic resonance (NMR) spectroscopy, the questions of which chemical species can be detected and with what sensitivity, their biochemical significance, and their potential clinical value are addressed.
(17) The location of the internal trans and cis isoprene units in ficaprenol-11 isolated from Ficus elastica was determined by 13C nuclear magnetic resonance.
(18) Using sterile conditions, antibodies to G were incubated with a suspension of transformed cells at 4 degrees C, unbound antibodies were then removed, and the cells were incubated with the immunoabsorbent (3 micron magnetic beads; J. Ugelstad et al.
(19) The EMD was miniaturized by using rare earth magnets in the construction of both external transmitter and internal receiver.
(20) We present three patients in whom the diagnosis of intranasal meningoencephalocele was made by magnetic resonance imaging.
Paramagnetism
Definition:
(n.) Magnetism, as opposed to diamagnetism.
Example Sentences:
(1) Our results show that paramagnetic enhancement with T1-weighted imaging adds specificity and enables rapid assessment of abnormalities of the blood-brain barrier.
(2) The linear electric field shift in paramagnetic resonance has, for the first time, been observed in frozen solutions.
(3) The Soret MCD of the reduced protein is interpreted as th sum of two MCD curves: an intense, asymmetric MCD band very similar to that exhibited by deoxymyoglobin which we assign to paramagnetic high spin cytochrome a3(2+) and a weaker, more symmetric MCD contribution, which is attributed to diamagnetic low spin cytochrome a2+.
(4) However, the intercept of the curve continued to increase in that region, as expected, because of the additional paramagnetic ions.
(5) These derivatized paramagnetic polysaccharides were shown to be more effective relaxants than the small paramagnetic molecules alone.
(6) The use of the latter has been limited to the few cells which contain paramagnetic iron.
(7) Only the derivative prepared by adding sodium formate demonstrates measurable intensity in the g' = 12 region of the low-temperature electron paramagnetic resonance (EPR) spectrum.
(8) The air flow is determined by the differential pressure principle, CO2 measurement is by the infra-red technique and O2 analyser is of the paramagnetic type.
(9) The formation of Cu(II)-bleomycin complexes as a function of pH has been studied using circular dichroism, absorption, electron paramagnetic resonance spectroscopy, and potentiometric titration.
(10) The iron-sulfur proteins of the green photosynthetic bacterium Chlorobium have been characterized by oxidation-reduction potentiometry in conjunction with low-temperature electron paramagnetic resonance spectroscopy.
(11) A transient electron paramagnetic resonance emission is observed after flash excitation of chloroplasts at room temperature.
(12) The microprocessor-based instrument fully automates each step of the assay, including sample and reagent addition, separation and wash of paramagnetic particles, and generation and acquisition of the chemiluminescent signal.
(13) Electron paramagnetic resonance (EPR) at 15 K was used to probe the magnetic interaction between the visible copper CuA2+ and ferric cytochrome a in the carbon monoxide compound of beef heart cytochrome oxidase.
(14) (electron-paramagnetic-resonance) spectroscopy, and a parallel study, using both e.p.r.
(15) These results have important consequences for the interpretation of distance measurements within the tubulin dimer using paramagnetic ions.
(16) The examination of the data leads to the conclusion on the existence of two possible mechanisms: the variation of properties of surface tryptophan residues environment and paramagnetic orientation of protein globule under the influence of a magnetic field.
(17) Chelates of paramagnetic metals have been developed for use as contrast agents for MRI.
(18) It is shown that 7-11-day long consumption (by rats) of water naftusia or organic matters isolated from it which contain carbonic acids and catecholamines possessing paramagnetic activity exerts a preventive effect on stress injuries of the mucous membrane of the stomach.
(19) 51V nuclear magnetic resonance spectroscopy and electron paramagnetic resonance spectroscopy were employed to investigate the interactions between ammonium vanadate and sugar phosphates and the formation of vanadium--sugar phosphate complexes that may be involved in the stimulation of the catalytic activity of the isomerases.
(20) The electronic and magnetic properties of the Fe(II)-thiolate centers in Fe(II)-metallothionein have been investigated by low-temperature magnetic circular dichroism and electron paramagnetic resonance spectroscopies at various levels of Fe(II) incorporation.