(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.
Vessel
Definition:
(n.) A hollow or concave utensil for holding anything; a hollow receptacle of any kind, as a hogshead, a barrel, a firkin, a bottle, a kettle, a cup, a bowl, etc.
(n.) A general name for any hollow structure made to float upon the water for purposes of navigation; especially, one that is larger than a common rowboat; as, a war vessel; a passenger vessel.
(n.) Fig.: A person regarded as receiving or containing something; esp. (Script.), one into whom something is conceived as poured, or in whom something is stored for use; as, vessels of wrath or mercy.
(n.) Any tube or canal in which the blood or other fluids are contained, secreted, or circulated, as the arteries, veins, lymphatics, etc.
(n.) A continuous tube formed from superposed large cylindrical or prismatic cells (tracheae), which have lost their intervening partitions, and are usually marked with dots, pits, rings, or spirals by internal deposition of secondary membranes; a duct.
(v. t.) To put into a vessel.
Example Sentences:
(1) Arterial compliance of great vessels can be studied through the Doppler evaluation of pulsed wave velocity along the arterial tree.
(2) With aging, the blood vessel wall becomes hyperreactive--presumably because of an augmented vasoconstrictor and a reduced vasodilator responsiveness.
(3) Multiple overlapping thin 3D slab acquisition is presented as a magnitude contrast (time of flight) technique which combines advantages from multiple thin slice 2D and direct 3D volume acquisitions to obtain high-resolution cross-sectional images of vessel detail.
(4) In the course of the syndrome development blood vessel permeability was increased in the anterior chamber of the eye.
(5) Aside from these characteristic findings of HCC, it was important to reveal the following features for the diagnosis of well differentiated type of small HCC: variable thickening or distortion of trabecular structure in association with nuclear crowding, acinar formation, selective cytoplasmic accumulation of Mallory bodies, nuclear abnormalities consisting of thickening of nucleolus, hepatic cords in close contact with bile ducts or blood vessels, and hepatocytes growing in a fibrous environment.
(6) Two fully matured specimens were collected from the blood vessel of two fish, Theragra chalcogramma, which was bought at the Emun market of Seoul in May, 1985.
(7) Its pathogenesis, still incompletely elucidated, involves the precipitation of immune complexes in the walls of the all vessels.
(8) In one of the cirrhotic patients, postmortem correlation of sonographic, angiographic, and pathological findings showed that the dilated vessels seen on sonography were cystic veins draining normally into the portal vein rather than portosystemic anastomoses.
(9) The observed pulmonary hypertension is probably the result of the left heart insufficiency and is being discussed with regard of the histopathological alterations in the heart muscle and the pulmonary vessels.
(10) DNA synthesis by endothelium subsequently increased and within 48 hr new blood vessel formation was detected.
(11) There was immediate resolution of paresthesia following mobilization of the impinging vessel from the nerve.
(12) After examining the cases reported in literature (Sacks, Barabas, Beighton Sykes), they point out that, contrary to what is generally believed, the syndrome is not rare and cases, sporadic or familial, of recurrent episodes of spontaneous rupture of the intestine and large vessels or peripheral arteries are frequent.
(13) The relationship between pressure at the functional site of origin of intracranial collateral channels (Pstem) and systemic pressure allows an estimation of the size of vascular channels from which collateral vessels originate.
(14) The release of possible peptide hormones into the interpeduncular cistern, where a pool of cerebrospinal fluid and large blood vessels occur, cannot be excluded.
(15) It is suggested that intra-endothelial conduction of electrical signals from capillaries to the resistance vessels may be involved in the local regulation of blood flow in the intact heart.
(16) Type C-like particles were found inter- and intracellularly in gland and vessel lumina and scattered in the connective tissue.
(17) We have characterized the effects of adenosine, the A1-receptor agonist N6-(L-2-phenylisopropyl)-adenosine (PIA) and the A2-receptor agonist 5'-(N-ethyl)-carboxamido-adenosine (NECA), in isolated human pulmonary vessels.
(18) It appears that the viscosity of the arterial wall must be the major source of attenuation in the larger arteries, while the viscosity of the blood plays a significant role only in the smaller vessels.
(19) In the choroid, VIP-immunoreactive fibers were seen mainly in close association with the choroidal blood vessels.
(20) Resistance vessels play a predominant role in limiting systemic arterial pressure in the orthostatic position.