What's the difference between concave and sphere?

Concave


Definition:

  • (a.) Hollow and curved or rounded; vaulted; -- said of the interior of a curved surface or line, as of the curve of the of the inner surface of an eggshell, in opposition to convex; as, a concave mirror; the concave arch of the sky.
  • (a.) Hollow; void of contents.
  • (n.) A hollow; an arched vault; a cavity; a recess.
  • (n.) A curved sheath or breasting for a revolving cylinder or roll.
  • (v. t.) To make hollow or concave.

Example Sentences:

  • (1) In the absence of glutamine the aggregate is readily dissociated following dilution of the extract; that is, velocity concaves upward as a function of increasing protein concentration.
  • (2) Under the SEM, the unstained area of rods is always showing a concavity, which is just a nucleoid in sections under the TEM.
  • (3) Three cases are presented in which a focal concave deformity occurred along the greater curvature of the stomach on upper gastrointestinal (GI) series.
  • (4) This change in shape varied from a slight flattening of the LV and IVS during diastole to total reversal of the normal direction of septal curvature such that the IVS became concave toward the RV and convex toward the LV.
  • (5) The technique combines the conventional plotting the contour lines and the highlighting, by means of hatching, of the concavities (or convexities) of the 'surface' representative of radioactive distribution.
  • (6) The trapezoidal shape of the vertebrae and scarring of the soft tissues within the concavity made correction difficult.
  • (7) On freeze-fracture preparations, the fragments with concave profile, corresponding to the external fracture face of plasma membrane, displayed an intramembrane particle density (ranging from 0 to 750 particles per micron2) which is similar to that recorded on the corresponding fracture face of intact cells from the common lymphoblastic leukemia antigen positive leukemic cell line (Nalm-1) or of vesicles shed in the culture medium by Nalm-1 cells.
  • (8) In testicular and cauda spermatozoa NBD-phallacidin fluorescent material was present in the two ventral processes that extended from the upper concave surface of the sperm head; also fainter material occurred along the concave border and as a dorsocaudal spur.
  • (9) When viewed in the lateral projection, the concavities superimpose, lying in the posterior portion of the vertebral body.
  • (10) Dose-effect relationships for most of the sampling times were linear and sometimes linear-quadratic concave upward or downward.
  • (11) This should be prevented by a bone-graft operation along the concave side of the tibia.
  • (12) Since February 1982, 23 patients with scoliosis were treated by releasing the soft tissues on the concave side and plaster spinal fusion jacket.
  • (13) The DRT curves of all data were concave and appeared to have two discrete slopes (z(D) values).
  • (14) Between the concave surfaces of two bent cadaverine molecules exists water channels all along the short b axis.
  • (15) Homotropic cooperative effects were observed as shown by the concave downward curvature of the reciprocal plots.
  • (16) The late mortality is 3.8% per patient-year--standard disc group 2.9% per patient-year and convexo-concave group 4.3% per patient year (no significant difference).
  • (17) The relationship between chloride transport and extracellular chloride in the presence of bromide is concave upward which suggests that this anion inhibits chloride movement.
  • (18) (3) A row of regularly spaced ribosomes located in the concavity, but at some distance from the arciform filament.
  • (19) The authors also consider a problem of how to interpret the symptom of a "snake mouth" or a "concave lens" which (depending on its cause) can be either transient (in a large concrement) or stable (in an exophytic tumor, completely occluding the duct).
  • (20) In both maxillary and mandibular teeth, approximal concavities often started in enamel, extending down to the root surface.

Sphere


Definition:

  • (n.) Rank; order of society; social positions.
  • (n.) A body or space contained under a single surface, which in every part is equally distant from a point within called its center.
  • (n.) Hence, any globe or globular body, especially a celestial one, as the sun, a planet, or the earth.
  • (n.) The apparent surface of the heavens, which is assumed to be spherical and everywhere equally distant, in which the heavenly bodies appear to have their places, and on which the various astronomical circles, as of right ascension and declination, the equator, ecliptic, etc., are conceived to be drawn; an ideal geometrical sphere, with the astronomical and geographical circles in their proper positions on it.
  • (n.) In ancient astronomy, one of the concentric and eccentric revolving spherical transparent shells in which the stars, sun, planets, and moon were supposed to be set, and by which they were carried, in such a manner as to produce their apparent motions.
  • (n.) The extension of a general conception, or the totality of the individuals or species to which it may be applied.
  • (n.) Circuit or range of action, knowledge, or influence; compass; province; employment; place of existence.
  • (n.) An orbit, as of a star; a socket.
  • (v. t.) To place in a sphere, or among the spheres; to insphere.
  • (v. t.) To form into roundness; to make spherical, or spheral; to perfect.

Example Sentences:

  • (1) Mike Ashley told Lee Charnley that maybe he could talk with me last week but I said: ‘Listen, we cannot say too much so I think it’s better if we wait.’ The message Mike Ashley is sending is quite positive, but it was better to talk after we play Tottenham.” Benítez will ask Ashley for written assurances over his transfer budget, control of transfers and other spheres of club autonomy, but can also reassure the owner that the prospect of managing in the second tier holds few fears for him.
  • (2) Quantitative measurements of image contrast were carried out for B-mode images of anechoic spheres (cysts) embedded in a random scattering medium.
  • (3) The relation between genetic counseling and the procreation sphere among the studied families is presented.
  • (4) Despite Facebook's size and reach, and its much-vaunted role in the short-lived Arab spring , there are reasons for thinking that Twitter may be the more important service for the future of the public sphere – that is, the space in which democracies conduct public discussion.
  • (5) I care far more that women are absolutely essential to political life, influential at every level, and are leading dynamic conversations in the public sphere around social and cultural change.
  • (6) The algorithm is an improvement over the sphere model in that it considers two distinct surfaces: an ellipsoid, to model the region of the skull on which the sensors are placed, and a sphere as the medium in which the current dipole model is considered.
  • (7) The yolk spheres, which were free of precipitates, gave the characteristic signal of the nitrogen K-edge.
  • (8) In family therapy, the analysis of secret implies not only to define the network of the concerned persons, but also the definition of the bonds between the secret and loyalties, the distribution of power, the alliances and the definitions of the private sphere (proper to each family) and of the protective function of the secret.
  • (9) The sphering agent lysolecithin is less effective in reducing red cell deformability, when the external calcium-concentration is kept low.
  • (10) The magnitude of changes in both energy interaction and intensity were used to explore the degree of outer and inner sphere coordination, incidence of covalency and the extent of metal 4f-orbital involvement in chemical bonding.
  • (11) Ultrastructurally, hemolytic concentrations of tributyltin can be visualized in the electron microscope by osmium staining during fixation as electron-dense spheres penetrating the lipid bilayer of the erythrocyte plasma membrane.
  • (12) In the present paper the images produced by spheres of varying diameter (d = 4,6,8,10 mm) embedded in a homogeneous substance of varying densities (H' = 3,48,93,137 Hounsfield units) as produced by computer tomography were studied.
  • (13) The typical elements of risk (tobacco, age, socio-professional sphere) reappear in this study.
  • (14) Our results showed that a lower percentage of normal subjects and a lower percentage of constipated patients were able to pass a 1.8 cm incompressible sphere compared with a 50 ml deformable balloon, although constipated patients found it more difficult than normal subjects to expel both types of simulated stool.
  • (15) A transient 5-coordinate intermediate might play a role in the mechanism of action of carbonic anhydrase by facilitating ligand exchange reactions within the inner coordination sphere of the Zn(II) ion at the active center.
  • (16) The expression of WAP appears to be dependent upon the formation of the alveoli-like spheres: prevention of sphere formation by fixation or drying of the matrix abolishes the expression of WAP.
  • (17) The SAR patterns in birds, however, varied markedly from those obtained from spheres of comparable mass.
  • (18) The depth of FAD incorporation into the enzyme molecule as calculated according to the outer sphere electron transfer theory is 6.1 A.
  • (19) For the hard-sphere model used in these calculations, it was found that current helix-coil transition theory does not predict the correct perturbed dimensions.
  • (20) These questions are the points of collision of two immensely important spheres of interest in our everyday life.