(n.) A solid of the form described by the revolution of a right-angled triangle about one of the sides adjacent to the right angle; -- called also a right cone. More generally, any solid having a vertical point and bounded by a surface which is described by a straight line always passing through that vertical point; a solid having a circle for its base and tapering to a point or vertex.
(n.) Anything shaped more or less like a mathematical cone; as, a volcanic cone, a collection of scoriae around the crater of a volcano, usually heaped up in a conical form.
(n.) The fruit or strobile of the Coniferae, as of the pine, fir, cedar, and cypress. It is composed of woody scales, each one of which has one or two seeds at its base.
(n.) A shell of the genus Conus, having a conical form.
(v. t.) To render cone-shaped; to bevel like the circular segment of a cone; as, to cone the tires of car wheels.
Example Sentences:
(1) Implantation of the mouse embryo involves the invasion of the secondary trophoblast giant cells of the ectoplacental cone (EPC) into the uterine decidua.
(2) It is commonly assumed that the visual resolution limit must be equal to or less than the Nyquist frequency of the cone mosaic.
(3) In scanning of more than 20 Hz frequency, the spectral pattern also reflected the characteristics of the cone system.
(4) The function of these triple cones can not be deduced from the behavior patterns of these fishes.
(5) Light-induced cone shortening provides a useful model for stuying nonmuscle contraction because it is linear, slow, and repetitive.
(6) As early as E-28 many growth cones have lamellipodia that extend outward from the core region as far as 10 microns.
(7) RCA-1, which is specific for D-galactose, showed patchy fluorescence on the basal and distal portions of the outer segments of the cones and rods, whereas neuraminidase-treated sections had uniform fluorescence throughout the tissues.
(8) Rats permitted to recover for 13 weeks and then sacrificed had lost almost all their rods (p less than 0.001) while the cones were reduced by about 50% (p less than 0.01).
(9) Rod adaptation had no reliable influence on response to rapid onset in cones or bipolar cells.
(10) Unique domains of the retinal interphotoreceptor matrix (IPM), termed cone matrix sheaths, are composed largely of chondroitin 6-sulfate proteoglycan in most higher mammalian species.
(11) Psychophysical results on human colour matching (Stiles & Burch, 1955; Stiles & Burch, 1959) were well predicted from the spectral sensitivities of the monkey cones.
(12) Our model of voltage dependence of GABA uptake predicts that all colors of light should hyperpolarize H1 cone horizontal cells and other investigators have shown by intracellular recording and dye-marking that type H1 cone horizontal cells hyperpolarize to all wavelengths of light.
(13) During the third stage, the dendritic trees of ganglion cells no longer branch or extend by means of active growth cones.
(14) Growth cones from the neurons contacted the muscle fibers within 6-12 h after isolation.
(15) The results indicate that contact Nd.YAG laser conization for CIN is an excellent conservative therapy from the point of cure rate, safety, indication, operation time and cone specimen, even compared with CO2 laser conization.
(16) In the human retina, which has both cones and rods in abundance, cones, cone bipolars, ganglion cells, horizontal cells, and small and large amacrine cells were labeled.
(17) Neither pH nor composition of liner collection cone had an effect on postthaw acrosomal scores, but the time required for a 50% increase in severely damaged acrosomes was greater for spermatozoa collected in polyethylene than in rubber liner collection cones.
(18) These regenerating nerve fibres together with growth cones make terminals in the form of buttons, rings and loops.
(19) Underneath the envelope, p17 forms the matrix protein layer, while the capsid of the double cone shaped core is built up of p24.
(20) On the model of electrical coupling proposed by Lamb & Simon (1976), this suggests that to the extent that the voltage-dependent desensitization results from an increased conductance and hence an increased shunt of the signals at the plasma membrane, there must be a concomitant increase in the conductance of the electrical pathways linking cones to one another.
Hyperbola
Definition:
(n.) A curve formed by a section of a cone, when the cutting plane makes a greater angle with the base than the side of the cone makes. It is a plane curve such that the difference of the distances from any point of it to two fixed points, called foci, is equal to a given distance. See Focus. If the cutting plane be produced so as to cut the opposite cone, another curve will be formed, which is also an hyperbola. Both curves are regarded as branches of the same hyperbola. See Illust. of Conic section, and Focus.
Example Sentences:
(1) After covalent inactivation of a variable proportion of the receptors with I-PTA-PON3, the occupancy-response relationship for platelet aggregation resulted in a similar hyperbola indicating an excess of low-affinity receptors coupled to aggregation (spare receptors).
(2) When phenylalanine was present, a pronounced deviation from the Michaelis-Menten hyperbola occurred.
(3) Flow-insensitive ranges of tcpO2-vs-flow hyperbolas were reduced by both leg lowering and moving the electrode towards proximal measuring sites.
(4) This logistic relationship is more general than the rectangular hyperbola or linear methods, provides excellent goodness of fit, and can be used as a "global" method for the entire calibration curve, rather than as a "local" method for small segments of the curve.
(5) Hill's rectangular hyperbola fitted the force-velocity data if the load during shortening was less than 70% of Fo.
(6) One parameter of the hyperbola is equivalent to the asymptotic response rate and the other parameter is equivalent to the rate of reinforcement that maintains a one-half asymptotic response rate.
(7) Analysis of these inhibition curves as double hyperbolae revealed two binding sites in the presence of DTT and only one low affinity site in the absence of DTT.
(8) The maximum velocity of shortening (Vm), determined by extrapolation from a hyperbola that is fitted to force-velocity data at finite loads, is substantially lower than V0.
(9) In contrast to hog kidney D-amino acid oxidase, the v vs s plots of D-amino acid oxidase in homogenized rat kidney did not have the form of a rectangular hyperbola, and showed an apparent negative cooperativity.
(10) The ligand self-association alone can cause deviation of the profile of the binding curve (r vs Lft plot) from a hyperbola, resulting in a nonlinear Scatchard plot.
(11) Binding was found to be saturable at higher membrane concentrations when using a fixed amount of ligand and showed a hyperbola analogous to enzyme-substrate binding.
(12) Then, we compared G to the conventional slope of the CO2-ventilation response line (S) and that of the metabolic hyperbola (SL).
(13) The difference in estimates of V0 and Vm is a function of: (i) the degree of heterogeneity of the muscle with respect to Vmax(i) and the curvature of the force-velocity relationship of the individual fibres, and (ii) the force range used to establish the hyperbola from which Vm is derived.
(14) The relationship between the slope of the plot and the substrate concentration shows characteristic features depending on the inhibition type: for partial competitive inhibition, the straight line converging on the abscissa at--Ks, the dissociation constant of the enzyme-substrate complex; for non-competitive inhibition, a constant slope independent of the substrate concentration; for uncompetitive inhibition, a hyperbola decreasing with the increase in the substrate concentration; for mixed-type inhibition, a hyperbola increasing with the increase in the substrate concentration.
(15) The data were in reasonable agreement with the theoretical hyperbola.
(16) It was established that there was a relationship between the half-life and the initial titre of antibody of each specificity which could be described by a rectangular hyperbola.
(17) A robust modified hyperbola was found to be superior for determining molecular weights and base-pair numbers for a set of known standards when compared with the conventional log transformation and a similar hyperbolic model.
(18) At low concentrations (42-1260 microM), the relationship between linoleic acid concentration and its absorption rate fitted best to a rectangular hyperbola.
(19) Likewise, the relationship could be described by a hyperbola with a linear relationship between intrapulmonary pressure and the inverse of breath duration.
(20) On the other hand, when mannosylphosphoryldolichol synthase activity was measured in the presence of amphomycin and as a function of dolichylmonophosphate (Dol-P) concentrations, the shape of the substrate velocity curve changed from a rectangular hyperbola to a sigmoid.