What's the difference between elliptical and spiral?

Elliptical


Definition:

  • (a.) Of or pertaining to an ellipse; having the form of an ellipse; oblong, with rounded ends.
  • (a.) Having a part omitted; as, an elliptical phrase.

Example Sentences:

  • (1) In this paper we present a robust algorithm to determine automatically contours with elliptical shapes.
  • (2) The results of the rapid-freeze and deep-etch procedure showed that the ridges observed by the surface replica method consisted of linear arrangements of elliptical particles on the ES face of the plasma membrane.
  • (3) The interaction with these lipids, the rotational conformations of the 17-acetyl group, and invertible conformations of the cyclohexenone of PROG were discussed on the basis of the elliptical strength of the Cotton effect and energy estimation of the preferred conformers.
  • (4) Similar aftereffects were obtained whether the area of the test stimulus was fixed or varied randomly from trial to trial, and whether the test stimulus was rectangular or elliptical.
  • (5) Raji consistently exhibited the highest and SU-AMB-1 the lowest polymerase activity and ellipticity.
  • (6) As univariate predictors, the variance of nuclear roundness, the mean of ellipticity, the Gleason score, age, and clinical stage were statistically significant predictors of disease progression when analyzed with Kaplan-Meier survival curves.
  • (7) The thermodynamics of this self-association have been evaluated by studying the temperature- and concentration-dependence of the mean residue ellipticity at 220 nm.
  • (8) In addition, it appears that the population of Elschnig type III nerve heads includes higher elliptical values than that for the Elschnig type II nerve heads.
  • (9) Protein unfolding was detected by ellipticity changes at 222 nm with increasing concentrations of guanidine hydrochloride (GdnHCl).
  • (10) Ontogenetic data on developmental stages I-IV of 3678 melanosomes based on geometric considerations (length, width, shape, and area) showed that MSH did not induce a complete transformation from spherical phaeomelanosomes to elliptical eumelanosomes.
  • (11) On 62 of 100 pediatric bladder sonograms a small, elliptical, hypoechoic structure was observed on the middle of the anterosuperior surface of the urinary bladder.
  • (12) The spatial extension of these megalospermatocyte populations is spherical to elliptical, some of them look like a section of a spiral around the longitudinal axis of the seminiferous tubule.
  • (13) In the case of the inclined model and a vertical beam the diffusion field was elliptical, with a still more diffuse transition to the fields above and below than in the case of the vertical model and a horizontal beam.
  • (14) CD measurements gave equal [theta] values for lysozyme and derivative at the two negative ellipticity bands at 208 and 220 nm.
  • (15) LH-RH nerve processes terminated mainly in the infurdibular radix within an elliptical zone surrounding the bases of the infundibular recessus.
  • (16) Similar, but far smaller, effects were seen in a region with an elliptical cross-section and when the flow was made pulsatile.
  • (17) The correlation showed the advantages of planning using optimal schemes in volumes with an elliptical and irregular section by the criteria of homogeneity of target contour irradiation, the lessening of radiation exposure beyond the target and an increase in the absolute value of minimum dose rate at the border of an irradiated volume.
  • (18) There was no positive ellipticity, and the spectrum was not characteristic of collagen.
  • (19) (b) Chemical input is received from unidentified presynaptic neurons containing either round or elliptical vesicles.
  • (20) The kinetics of regain of the native ellipticity in the far- and near-UV spectra have been investigated during the refolding at pH 7.8 and 20 degrees C of guanidine-unfolded, nonreduced hen egg white lysozyme.

Spiral


Definition:

  • (a.) Winding or circling round a center or pole and gradually receding from it; as, the spiral curve of a watch spring.
  • (a.) Winding round a cylinder or imaginary axis, and at the same time rising or advancing forward; winding like the thread of a screw; helical.
  • (a.) Of or pertaining to a spiral; like a spiral.
  • (a.) A plane curve, not reentrant, described by a point, called the generatrix, moving along a straight line according to a mathematical law, while the line is revolving about a fixed point called the pole. Cf. Helix.
  • (a.) Anything which has a spiral form, as a spiral shell.

Example Sentences:

  • (1) Digestion is initiated in the gastric region by secretion of acid and pepsin; however, diversity of digestive enzymes is highest in the post-gastric alimentary canal with the greatest proteolytic activity in the spiral valve.
  • (2) Don't we by chance come across this reciprocal spiral perspective when two people distrust one another without actually showing it?
  • (3) A great deal of information about the spiral bacteria of the stomach has accumulated in the past 5 years.
  • (4) Somalia has faced drought; famine; decades of conflict, now involving the Islamist rebels of al-Shabaab among other groups; the absence of an effective, central authority; and spiralling food prices.
  • (5) Spiral neurons, their fibers and endings as well as inner and outer hair cells express NSE in the isolated organ of Corti in culture.
  • (6) The binding sites were mainly located on the stereocilia, the cuticular plate of hair cells, the head plates of Deiters' cells, fibrous structures in pillar cells, in the spiral limbus and tectorial membrane and basilar membrane, plasma membranes, mitochondria and the chromatin of various kinds of cells.
  • (7) When normalized with respect to scala cross-section, the process of tracer movement across the spiral ligament is similar in the basal and third turns.
  • (8) Tangent-screen studies uncovered neurasthenic spiral fields superimposed on hysterical tubular contractions of both eyes.
  • (9) The phi-model also gives the noble numbers and moreover orders them in a way that establishes connections with the morphogenetic principles used in models for pattern generation; the order has to do with the relative frequencies of the spiral patterns in nature.
  • (10) The row had been inflamed over the weekend by a series of leaks about the spiralling price of Gove's free schools and high costs of Clegg's free school meals, giving Labour ammunition to attack the government's education policy in Westminster.
  • (11) Spiral-like primary dendrites were found and the orientation of secondary dendrites changed.
  • (12) The main uterine, radial and spiral arteries were identified in all patients.
  • (13) In animals receiving passive (unstimulated) implants, morphometric analysis of spiral ganglion cell density showed no significant difference in ganglion cell survival between the implanted cochleas and the contralateral control ears.
  • (14) Later, these vacuoles were divided into numerous vesicular spiral formation-centers, producing micronemes at the apical pole of young merozoites.
  • (15) During more extended exposure (60 and 90 days) the changes in hair cells of the spiral organ, which included nuclear deformation and disintegration of chromatin, mitochondria and endoplasmic reticulum membranes, became irreversible and caused the decay of injured cells.
  • (16) The company's value lies in its FM licence for London, with the audience for its national AM licence spiralling downwards in recent years.
  • (17) The spiral reinforcement at the same time prevents compression of the vein by surrounding cicatricial tissue as well as an aneurysmatic extension of the transplant.
  • (18) The intensity-measuring device in both apparatuses has a mobile disk attached to a motionless axis by a spiral spring; the clamps have fixing screws in the butts of a spong.
  • (19) The balance is fragile and the threat of a spiral of decline is not an idle one.
  • (20) They ran in a spiral pattern in the distal part of the middle cerebral artery.