(1) We had blind-folded subjects who were rotating at constant velocity make standardized head movements during the free-fall and high force phases of parabolic flight, and we measured both the characteristics of their horizontal nystagmus and the magnitude of their experienced self-motion.
(2) Twenty-one subjects flew aboard a KC-135 aircraft operated by the National Aeronautics and Space Administration (NASA) which performed parabolic maneuvers resulting in periods of 0-g, 1-g, and 1.8-g. Each subject flew once with a tablet containing scopolamine and once with a placebo in a random order, crossover design.
(3) There was a parabolic relationship between agent lipophilic-hydrophilic balance, measured as chromatographic Rm values, and ILSmax.
(4) The grouping structure, which prescribes the location of major tempo changes, and the parabolic timing function, which represents a natural manner of executing such changes, seem to be the two major constraints under which pianists are operating.
(5) A sigmoidal relationship, rather than the familiar parabolic relationship, best described the influence of lipophilicity on both conjunctival and corneal drug penetration.
(6) Two methods are proposed for the analysis of the resulting progress curve of nitroaniline formation in terms of zymogen-activation kinetics: a graphical transformation of the parabolic curve and transformation of the curve for nitroaniline production into a linear progress curve by the addition of a specific inhibitor of plasmin, bovine pancreatic trypsin inhibitor.
(7) Lineweaver-Burk plots for insulin as varied substrate were linear, whereas those for the thiol substrates were nonlinears: the plots for low molecular weight monothiols (GSH and mercaptoethanol) were parabolic; those for low molecular weight dithiols (dithiothreitol, dihydrolipoic acid, and 2,3-dimercaptopropanol) were apparently linear modified by substrate inhibition; and the plots for protein polythiols (reduced insulin A and B chains and reduced ribonuclease) were parabolic with superposed substrate inhibition.
(8) A review of previous research and hardware development, performed mostly in parabolic flight both in the Soviet Union and the U.S., reveals an interest in surgical chambers to prevent cabin atmosphere contamination.
(9) The effects of PRLs were parabolic, high doses of the hormones being less effective than low doses.
(10) Although this drive could be a consequence of a disorientation experienced by subjects undergoing parabolic flight or by astronauts, the phenomenon also supports the hypothesis of a tonic influence exerted by the otoliths on the postural and extra-ocular musculature in order to compensate for the downward pull by the gravitoinertial forces.
(11) Orally administered metoclopramide (REGLAN) at doses of 10 or 20 mg, 75 min prior to either stressful linear acceleration (parabolic flight) or cross-coupled accelerative semicircular canal stimulation in a rotating chair was evaluated for its ability to prevent emesis or nausea II, respectively.
(12) A third-order polynomial function would theoretically explain better than a linear relation or a parabolic fit the curved shape of experimentally obtained P-Q relationships.
(13) These values are situated on a look like parabolic curve (C) centered on a 26.13 mm or 27.2 mm l value according to anterior or posterior implants.
(14) The univariate analysis concerning the BMI for various age groups, the two sexes, and variable periods of follow-up has almost systematically showed a parabolic inverted J shaped relationship with minimal levels of risk for BMI values of 27-29 units.
(15) Left atrial and aortic root dimensions tended to show a parabolic relationship with birth weight, increments were reduced at higher birth weights (r = +0.92 and 0.85).
(16) Therefore, the velocity profile is "trapezoidal" rather than parabolic at all times during the pulsation period.
(17) The inhibitory activity is strongly dependent on the alkyl chain length of the alkoxy-substituent showing a typical quasi-parabolic dependence with maximum effect at 6-8 carbon atoms in the alkyl chain.
(18) To facilitate description of central field defects, enlargement of the central visual field by a parabolic, non-linear projection has been proposed.
(19) A highly significant reversed parabolic relationship was shown between the Rm values and the biliary excretion of the test compounds.
(20) Sections cut normal to the plane of the laminae do not show parabolic patterning.
Paraboloid
Definition:
(n.) The solid generated by the rotation of a parabola about its axis; any surface of the second order whose sections by planes parallel to a given line are parabolas.
Example Sentences:
(1) The paraboloid is found in cytoplasmic processes projecting into the follicular lumen and in perikarya of the follicular cells.
(2) The sinuses are subsequently arranged into 4 classes, according to their similarity to solids of revolution such as: semi-ellipsoid (class a: 15% of specimens); paraboloid (class b: 30%); hyperboloid (class c: 47%) and cone (class d: 8%).
(3) In normal adult eyes and in eyes 21 days after lens removal, the paraboloid portion of the photoreceptor inner segments, and in some cases the perinuclear cytoplasm of the photoreceptor cells, contained the antigen.
(4) The present study suggests that the chick paraboloid not only is a field for active glycogen metabolism, but also becomes a storage of glycogen.
(5) A comparison of salmonella findings and E. coli titre showed that with increasing E. coli contamination the proportion of positive salmonella findings also increased (paraboloid curve).
(6) Double cones consist of a larger chief member which shows a thin tapering outer segment, a large heterogeneous oil droplet and a prominent paraboloid.
(7) Histamine-like immunoreactivity was localized within paraboloids of certain cone photoreceptors by use of two different antisera directed against histamine.
(8) Branching glycosyltransferase seemed to appear after phosphorylase was activated and these enzymes became higher in their activity with the differentiation in the paraboloid in the fetal and early postnatal periods.
(9) Native glycogen in the paraboloid stained brown, while histochemically synthesized polyglucose stained brown or purple.
(10) Overproduction of polyglucose particles was not found in the paraboloid of the retina incubated in the medium in vivo.
(11) Glycogen synthetase and phosphorylase activities in the paraboloid glycogen of the accessory cone of the chick retina were studied electron histochemically, while the paraboloid glycogen was observed by electron microscopy.
(12) Some of the paraboloid of the accessory cone of the chick retina contained abundant glycogen granules, but some showed no glycogen granules.
(13) Rod inner segments display an ellipsoid but no oil droplet or paraboloid.
(14) Polyglucose particles synthesized by phosphorylase activity in the chick paraboloid were located in the cytoplasmic matrices and expanded them widely.
(15) These enzyme activities appeared in the cytoplasmic matrices of the developing paraboloid in the photoreceptor inner segment almost simultaneously at the 17th day of incubation.
(16) These results show that (i) the shape of a fine tip is not conical but resembles more closely a paraboloid of revolution, and (ii) for this shape to be maintained throughout growth, accretion (rate of mass uptake per unit area) cannot everywhere be the same on the surface of the tip but must decrease as the diameter increases.
(17) A delay in formation of ellipsoid and paraboloid occurred, especially in membrane discs of the external segment of photoreceptor.
(18) Preincubation of eyecups in Ringer's containing 10 microM histamine selectively increased the immunoreactivity of these photoreceptor paraboloids.
(19) The specimens were embedded for routine electron microscopy and the paraboloid of the accessory cone was observed by electron microscopy.
(20) Electron microscopy revealed that the paraboloid in all experimental groups appeared to have many vacant spaces at the sites of polyglucose particles, as after the amylase digestion test.