(p. p. & a) Joined or held together; leagued; confederated.
(p. p. & a) Composed or made; -- with of.
(p. p. & a) Closely or firmly united, as the particles of solid bodies; firm; close; solid; dense.
(p. p. & a) Brief; close; pithy; not diffuse; not verbose; as, a compact discourse.
(v. t.) To thrust, drive, or press closely together; to join firmly; to consolidate; to make close; -- as the parts which compose a body.
(v. t.) To unite or connect firmly, as in a system.
(n.) An agreement between parties; a covenant or contract.
Example Sentences:
(1) The estimated DNA compaction ratio (approximately 3-fold) is consistent with a significant degree of nucleosome unfolding in the hyperstimulated BR genes.
(2) DNA compactization by protamines and histones HI is discussed in terms of the results obtained.
(3) At S-L clefts, paranodal-nodal regions, and Schwann cell nuclei, the axonal areas were smaller and the NF densities were higher than at compact myelinated regions.
(4) A compact attachment for microscope-type instruments is described enabling to introduce, rapidly and qualitatively, minute biological speciments into melted embedding medium and ensuring the safety of optics.
(5) Laminin was already present on the cell surface at the 2-cell stage, while nidogen was first detectable on compacted 8- to 16-cell stage morulae.
(6) Both types of molecules are compact and globular in shape and apparently contain beta-pleated sheet conformation.
(7) The tail region appeared to be cleaved off, making the head region less compact.
(8) Qualitatively the cell aspirator collected epithelial cells which were better preserved morphologically, but also a larger number of compact cell clusters.
(9) The ultrastructural study of nucleoli and ribonucleoprotein-containing structures in human seminiferous tubules revealed that the nucleoli of spermatogonia, spermatocytes and Sertoli cells exhibited a tripartite structure consisting of: a fibrillar center, a compact granular portion, and a reticular portion containing both pars fibrosa and pars granulosa.
(10) Compaction of the morula is a prerequisite for subsequent differentiation of the mouse embryo.
(11) Most double-helical segments were reactive to cobra venom ribonuclease to some degree; the exceptions were the five "long-range" helices that are probably compactly folded within the structure.
(12) During powder compaction on a Manesty Betapress, peak pressures, Pmax, are reached before the punches are vertically aligned with the centres of the upper and lower compression roll support pins.
(13) Based on these results we propose that the linearization of the DNA elution dose-response curve observed after chromatin decondensation reflects a reduction in the degree of chromatin compactness in the nuclear complexes that leads to a relatively uniform distribution of the DNA on the filter and reduces trapping of elutable material in the compact nuclear structures otherwise present.
(14) Cleavage to the compacted and cavitating stages was achieved in 78% and 69%, respectively, of human embryos cocultured in 24-48 hour human ampullary subcultures as compared to 50% and 33%, respectively, for embryos grown in culture medium alone.
(15) These observations strongly suggest that (i) GCN4 specifically recognizes the central base pair, (ii) the optimal half-site for GCN4 binding is ATGAC, not ATGAG, and (iii) GCN4 is a surprisingly flexible protein that can accommodate the insertion of a single base pair in the center of its compact binding site.
(16) In fact, the large scattering angle we chose, theta = 135 degrees, allowed us to assemble a very compact source-detector device.
(17) A monoclonal antibody to the cell adhesion molecule, E-cadherin, which mediates mouse embryo compaction, completely blocks compaction induced by these activators of PKC.
(18) At rostral levels, one third of the tracts are loosely built forming a king of curtain, while they become more compact at caudal levels.
(19) This shows that the compaction of chromatin associated with transcriptional inactivation does not require phosphorylation of H3 and suggests that the level of basal phosphorylation of H1 is not correlated with the intensity of transcription or DNA replication.
(20) After 8 days of incubation, SM subdivides into superficial (compact) and deep (disperse) sublaminae.
Sinter
Definition:
(n.) Dross, as of iron; the scale which files from iron when hammered; -- applied as a name to various minerals.
Example Sentences:
(1) To isolate single spores from adhesive ascospores and the mycelium, the suspension was sucked through a combination of sintered-glass plates with different pore sizes.
(2) However, within the short sintering times needed to achieve maximum density the rhenanite particles remained mostly intact.
(3) Hydroxyapatite ceramics with zirconia dispersion from fine powders synthesized hydrothermally were post-sintered at 1000-1300 degrees C under 200 MPa of argon for 1 h without capsules, after normal sintering in air at 1200 degrees C for 3 h. Densification was most significant with post-sintering at 1200 degrees C. Fracture toughness, Vickers hardness and elastic properties of these materials were investigated.
(4) The interconnected pore volume decreased with decreasing particle size of the powder, increasing compaction pressure, and increasing sintering temperature.
(5) In this work, we have identified the crystalline phases in eight commercial dental porcelains (four enamels and four dentin bodies) in both powder (unfired) and sintered forms, by x-ray diffraction, emission spectroscopy analysis, reflection optical microscopy, and scanning electron microscopy.
(6) New and deeper understanding of the structure of non-crystalline solids, structural imperfections, sintering physics, and other physical phenomena related to the melting and solidification processes has brought ceramics from the near-total art form process of the mid-century to the status of a highly sophisticated science it enjoyed in the 1980's.
(7) These surface treatments allowed testing of the same basic material which was mill-finished, metallurgically polished, electrochemically oxidized, sintered with a porous surface, and glow-discharged.
(8) Beta-TCP powders with larger particle size, obtained by sintering at higher temperatures, increased the ultimate strength of the cement.
(9) Knoop Hardness and pin-and-disc-wear measurements were made on a commercial silver-sintered glass-ionomer cement.
(10) In this study, the vapor was generated from the surface of a sintered sphere of glass beads filled with propylene oxide.
(11) Densely sintered synthetic hydroxyapatite (HA) is used as an implant material because of its excellent tissue biocompatibility.
(12) The materials studied included pure Ag, Au, and Ti and sintered Ag 10% Ti and Ag 10% Ta.
(13) The right prosthesis, in place for 25 months, was a Porous-Coated Anatomic (PCA) implant with double-layered, sintered, cobalt-chromium alloy beads.
(14) The Authors present personal histological findings on a beta-tricalcium phosphate Mg substituted (beta-TCMP) prepared as sintered granules and unsintered powder.
(15) 5-7): calcite and quartz are the principal components of the sinters, additional diffuse apatite lines appear in bone samples.
(16) In the experiment, fresh bovine bone was chemically defatted and deproteinized, and sintered by high temperature (which is called ceramic bovine bone).
(17) The sintered hydroxyapatite was designed to be utilized as a percutaneous device.
(18) A gravity sintering fabrication technique has been developed for producing Co-Cr-Mo alloy dental implants having a porous coating on the root portion.
(19) Fatigue testing was performed on sintered materials as well as sintered and HIPed materials, both with and without a porous coating.
(20) Sintering and densification additives, such as SiO2 powder, do not appear to be necessary.