What's the difference between boundary and crust?

Boundary


Definition:

  • (n.) That which indicates or fixes a limit or extent, or marks a bound, as of a territory; a bounding or separating line; a real or imaginary limit.

Example Sentences:

  • (1) Patients with papillary carcinoma with a good cell-mediated immune response occurred with much lower infiltration of the tumor boundary with lymphocyte whereas the follicular carcinoma less cell-mediated immunity was associated with dense lymphocytic infiltration, suggesting the biological relevance of lymphocytic infiltration may be different for the two histologic variants.
  • (2) In contrast, boundary layer diffusion is operative in the release from the matrixes prepared by compression of physical mixtures.
  • (3) The review will now be delayed for five years, leaving the next election to be fought on the existing constituency boundaries, and seriously damaging David Cameron's chances of winning an overall majority in 2015.
  • (4) In Europe such escapees often find themselves recaptured by boundary adjustments.
  • (5) This gene was previously shown to have a DNase I- and S1-sensitive site for which the boundaries varied with the cell cycle, and we have now precisely mapped these modifications.
  • (6) Past measurements have shown that the intensity range is reduced at the extremes of the F0 range, that there is a gradual upward tilt of the high- and low-intensity boundaries with increasing F0, and that a ripple exists at the boundaries.
  • (7) The problem, however, is that this scale of economic planning and management is entirely outside the boundaries of our reigning ideology.
  • (8) His first ball reaches Ali at hip height and he flicks him to fine leg for a boundary that takes him to a quite epic century.
  • (9) Upon estimation of 5' and 3' boundaries, a 497 base stretch of homology with the TOP1 mRNA was found.
  • (10) Responses above the associated boundary decreased stimulus intensity, responses below the associated boundary increased stimulus intensity.
  • (11) The position of the sedimenting boundary can be observed at any time during the run, and up to six 'photographs' can be recorded for subsequent analysis.
  • (12) If figurative language is defined as involving intentional violation of conceptual boundaries in order to highlight some correspondence, one must be sure that children credited with that competence have (1) the metacognitive and metalinguistic abilities to understand at least some of the implications of such language (Lakoff & Johnson, 1980; Nelson, 1974; Nelson & Nelson, 1978), (2) a conceptual organization that entails the purportedly violated conceptual boundaries (Lange, 1978), and (3) some notion of metaphoric tension as well as ground.
  • (13) First, chains are constrained by their inability to penetrate the boundary.
  • (14) Within the developing CNS of mouse embryos the anterior boundaries of expression are specific for each gene.
  • (15) Cities and counties across the US have also passed laws that prohibit such performances from occurring within their boundaries.
  • (16) The rate of forward patch movement was generally greater at positions further behind the boundary.
  • (17) He said the proposals had been directed at seats that have not changed hands for many years, but said with the redrawing of the constituency boundaries required by David Cameron's desire to cut the number of constituencies no safe seats as previously defined would exist.
  • (18) A line iterative technique is described to solve numerically the resulting coupled system of nonlinear partial differential equations with physiologically relevant boundary and entrance conditions.
  • (19) Many Iranian women are already pushing the boundaries , and observers in Tehran say women who drive with their headscarves resting on their shoulders are becoming a familiar sight.
  • (20) And then, as the Guardian revealed at the weekend, there is the potentially devastating effect of the boundary changes, which can’t really be brought in before an early election but will radically tilt the field by 2020.

Crust


Definition:

  • (n.) The hard external coat or covering of anything; the hard exterior surface or outer shell; an incrustation; as, a crust of snow.
  • (n.) The hard exterior or surface of bread, in distinction from the soft part or crumb; or a piece of bread grown dry or hard.
  • (n.) The cover or case of a pie, in distinction from the soft contents.
  • (n.) The dough, or mass of doughy paste, cooked with a potpie; -- also called dumpling.
  • (n.) The exterior portion of the earth, formerly universally supposed to inclose a molten interior.
  • (n.) The shell of crabs, lobsters, etc.
  • (n.) A hard mass, made up of dried secretions blood, or pus, occurring upon the surface of the body.
  • (n.) An incrustation on the interior of wine bottles, the result of the ripening of the wine; a deposit of tartar, etc. See Beeswing.
  • (n.) To cover with a crust; to cover or line with an incrustation; to incrust.
  • (v. i.) To gather or contract into a hard crust; to become incrusted.

Example Sentences:

  • (1) In certain cases the ulcerous crust is removed with chloramine.
  • (2) A rapid evolution of epithelialization was found in case of treated animals as distinguished from control sample, where the infected crust was far from being healed.
  • (3) Future ice loss and bending of the crust due to rising sea levels have the potential ultimately to raise levels of both earthquake and volcanic activity.
  • (4) A search for an intact blister is always warranted when erosions, oozing, or crusts are noted.
  • (5) In general, healthy panelists evaluated the cakes as sweeter, crust bitterness as greater, and overall eating quality as higher than the panel members with carbohydrate metabolic disorders.
  • (6) The tanks fell from 2,000ft on to the salt crust of the open desert and burst open as they struck the ground.
  • (7) A negative correlation between the number of mites and the presence and extensiveness of crusts was observed.
  • (8) The presence of subcorneal pustules in a solitary, indolent, crusted plaque, or in erythema annulare-like lesions with a trailing scale, is evidence of atypical psoriasis.
  • (9) Requirements for intranasal douching with saline have varied; however, we have had no problems with bothersome crusting following b.i.d.
  • (10) Disadvantages are a longer healing period and temporary crust formation as in conchotomy, the high technical effort and cost of the laser.
  • (11) Crusting was found around the lashes, and the lids developed loss of lashes and hair.
  • (12) Within three weeks after treatment was initiated, all animals were free of crusts.
  • (13) After the crust falls, carrying away some tattoo pigment on its deeper surface, a pale-pink scar forms, then gradually fades in several months.
  • (14) We report a case of nonvesicular hydroa vacciniforme in which only extensive crusting associated with hypertrophic scarring on sun-exposed skin was present.
  • (15) The absorption of mercury was investigated after three phase crusting by Grob on a second-degree scald burn of 10 to 15% of the body surface in rats.
  • (16) For oxalate stones a separation of the outer layer (crust) from the inner layer (core) marked the point of maximum load.
  • (17) The vesicles progress to pustules, then to crusts that eventually are lost.
  • (18) A case of localized CrS appearing as a yellowish and crusted plaque on the second right toe is reported in a woman with AIDS.
  • (19) All the patients were elderly women who developed chronic, extensive, pustular, crusted and occasionally eroded lesions of the scalp which produced scarring alopecia.
  • (20) For all their apparent beauty and fragility, just think of coral reefs as big lumps of rock with a living crust.