(n.) Any large piece of timber or iron long in proportion to its thickness, and prepared for use.
(n.) One of the principal horizontal timbers of a building or ship.
(n.) The width of a vessel; as, one vessel is said to have more beam than another.
(n.) The bar of a balance, from the ends of which the scales are suspended.
(n.) The principal stem or horn of a stag or other deer, which bears the antlers, or branches.
(n.) The pole of a carriage.
(n.) A cylinder of wood, making part of a loom, on which weavers wind the warp before weaving; also, the cylinder on which the cloth is rolled, as it is woven; one being called the fore beam, the other the back beam.
(n.) The straight part or shank of an anchor.
(n.) The main part of a plow, to which the handles and colter are secured, and to the end of which are attached the oxen or horses that draw it.
(n.) A heavy iron lever having an oscillating motion on a central axis, one end of which is connected with the piston rod from which it receives motion, and the other with the crank of the wheel shaft; -- called also working beam or walking beam.
(n.) A ray or collection of parallel rays emitted from the sun or other luminous body; as, a beam of light, or of heat.
(n.) Fig.: A ray; a gleam; as, a beam of comfort.
(n.) One of the long feathers in the wing of a hawk; -- called also beam feather.
(v. t.) To send forth; to emit; -- followed ordinarily by forth; as, to beam forth light.
(v. i.) To emit beams of light.
Example Sentences:
(1) An argon laser beam was used to irradiate the round window in 17 guinea pigs.
(2) Streaming is shown to occur in water in the focused beams produced by a number of medical pulse-echo devices.
(3) 11 patients with a postoperative classification of stage D had additional external beam radiation to the pelvic and paraaortic lymph nodes with shielding of the implanted prostatic region.
(4) The data collection scheme for the scanner uses multiple rotations of a linearly shifted, asymmetric fan beam permitting user-defined variable resolution.
(5) The scatter measurement was made using a standard imaging geometry with both beam stops and an additional x-ray detector placed behind the standard imaging detector.
(6) In an effort to decrease the treatment time for this technique, the flattening filter has been removed from an AECL Therac-6 linear accelerator and the characteristics of the resulting beam have been measured.
(7) Comparative clinical studies on temporomandibular joints (TMJ) between the LEGP and fan beam collimators also confirm the superior image quality obtained with the fan beam collimator.
(8) The special advantage of the UV-beam is that it allow to inactivate selectively of the particular elements of nuclear apparatus of living ciliates is to observe consequences of operation on distant descendants of irradiated cell.
(9) Three-five days after endoscopic laser destruction long-distance open-field gamma-beam therapy was administered to 10 patients and polychemotherapy to 9 of these.
(10) Guidelines for external beam treatment have been set forth in the ASTRO Newsletter.
(11) In work to determine whether X-radiation could be used to induce tumors of the colon in outbred Holtzman rats, a technique was devised so that only the descending colon could be irradiated with a collimated X-ray beam and tumorigenic exposures in the kilo-Roentgen range were delivered.
(12) Nevertheless some technical variations are required, to maintain the typical homogeneity of photon beams.
(13) The RBEs of fast neutron, thermal neutron beams, and neutron capture therapy relative to 60Co gamma-ray were calculated as 2.78, 4.18, and 6.15 at 0.1 surviving fraction, respectively.
(14) Some patients received postoperative external beam irradiation (2000 cGy whole pelvis and an additional 3000 cGy to the parametria, with a midline stepwedge) when deep myometrial invasion was present.
(15) Between 1981 and 1985, 20 patients with malignancy-associated ureteral obstruction (MAUO) were given external beam irradiation with a palliative intent.
(16) Finally, the question of oncogenic effects raised with 193 nm laser beams does not seem to apply to the 308 nm wavelength.
(17) Hence the laser beam acts as a fixation target and measuring beam.
(18) Electron beam therapy is usually employed for the treatment of tumours located at or near the surface of the body, because the electron beam gives a high dose near the surface, but falls off rapidly with increasing depth beyond the level of the 80% depth dose.
(19) By embedding the biopsy in the acrylic resin LR White, unsupported sections of which are stable in the electron beam, light and electron microscopy and immunocytochemistry become feasible on sections from the same block.
(20) Real 60Co beams contain lower energy components; in addition, Awall is defined differently by different authors.
Ledge
Definition:
(n.) A shelf on which articles may be laid; also, that which resembles such a shelf in form or use, as a projecting ridge or part, or a molding or edge in joinery.
(n.) A shelf, ridge, or reef, of rocks.
(n.) A layer or stratum.
(n.) A lode; a limited mass of rock bearing valuable mineral.
(n.) A piece of timber to support the deck, placed athwartship between beams.
Example Sentences:
(1) This bony strut reduces inferomedial displacement of the muscle cone and provides a medial supporting "ledge" in cases requiring late orbital reconstruction.
(2) The continuous ledge will be covered with a cast continuous bar, intended to restore the lingual crown morphology.
(3) The number of two-year sojourns in a hospital and other data are reported on the basis of an evaluation of the signature ledges of the clinical histories in the district Dresden.
(4) In April 2001, he secured the con- viction of Klan member Thomas Blanton for driving the men to the church in the middle of the night to lay a dozen sticks of dynamite on the window ledge.
(5) The ledges of some pleats partly grow toward each other as ring like diaphragms, leaving openings whose boundary is composed of alveolar epithelium separated by a basal lamina from a connective tissue sheath with capillaries.
(6) All the determinants for ledging were not identified with this study, and further research is indicated.
(7) In the outer and middle layers of the spiny deposits, the Ca, P, and Mg concentrations were all significantly higher than those of the ledge-type deposits.
(8) Calculus components of the ledge-type deposits contained crystal types quite similar to sandy grain-shaped hydroxyapatite (HAP), plate-shaped octacalcium phosphate (OCP), and hexahedral Mg-containing whitlockite (WHT).
(9) Geologists sort the waterfalls into two types: wedding-cake falls, which descend in multiple tiers, and bridal-veil falls, that plunge over a ledge into a pool.
(10) Ridge POAMES occurred most frequently, followed by combined, ledge and the nodular exostose types.
(11) The edges of the breaks appear clinically as glassy ridges or ledges and are also called Haab's lines.
(12) 15 had a significantly higher incidence of ledging.
(13) Hypoplasia of the labial enamel of 15 out of 19 teeth from sheep killed after recovery from the infection was classified according to the extent and depth as pits, grooves or larger areas of missing enamel with ledge-formation cervically.
(14) Immature spores in the strain studied had a ledge which disappeared during maturation.
(15) Shaping effectiveness of the tested files was qualitatively evaluated in terms of respect for conservation of the apical constriction and the presence or absence of ledging, specially in the apical third of the root canals.
(16) By following the continental ledge in search of sardines, sardinella, and mackerel, it hopes to catch 3,000 tonnes of fish in a four- to six-week voyage before it offloads them, possibly in Las Palmas in the Canary Islands.
(17) This preliminary study suggests that such a wheelchair feature might improve the safety of wheelchairs in conditions involving inadvertent loss of caster support, as when they drop off a stair or ledge.
(18) A complicated system of low lying slanting, diagonal mucosal ledges forms between the tall longitudinal folds.
(19) Ten of the 107 had small enamel fractures, primarily occurring on cingulum ledges.
(20) Each of the nine objects was placed on a ledge inside a dummy television screen next to the video screen, the food items alternating with the neutral objects, and 20 female patients with anorexia nervosa and 20 female controls matched for age were asked to adjust the size of the video recording to that of the real object.