(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.
Log
Definition:
(n.) A Hebrew measure of liquids, containing 2.37 gills.
(n.) A bulky piece of wood which has not been shaped by hewing or sawing.
(n.) An apparatus for measuring the rate of a ship's motion through the water.
(n.) Hence: The record of the rate of ship's speed or of her daily progress; also, the full nautical record of a ship's cruise or voyage; a log slate; a log book.
(n.) A record and tabulated statement of the work done by an engine, as of a steamship, of the coal consumed, and of other items relating to the performance of machinery during a given time.
(n.) A weight or block near the free end of a hoisting rope to prevent it from being drawn through the sheave.
(v. t.) To enter in a ship's log book; as, to log the miles run.
(v. i.) To engage in the business of cutting or transporting logs for timber; to get out logs.
(v. i.) To move to and fro; to rock.
Example Sentences:
(1) It was found that linear extrapolations of log k' versus ET(30) plots to the polarity of unmodified aqueous mobile phase gave a more reliable value of log k'w than linear regressions of log k' versus volume percent.
(2) The ED50 and ED95 of mivacurium in each group were estimated from linear regression plots of log dose vs probit of maximum percentage depression of neuromuscular function.
(3) Probability distributions are fitted to these data and it is shown that the log-series distribution best fits the data for two subgroups.
(4) Each line exhibited 1-4 log differences in sensitivities to the two toxins.
(5) At a concentration of 10 microM, tetraamine 4 did not affect histamine and 5-hydroxytryptamine receptors of guinea pig ileum or alpha-adrenoreceptors of guinea pig atria whereas it inhibited postsynaptic alpha-adrenoreceptors of rat vas deferens with a -log K value of 5.23 and nicotinic receptors of frog rectus abdominis with an IC50 value of 0.23 microM.
(6) The best compound was trans-alpha-[[(4-bromotetrahydro-2H-pyran-3-yl) amino]methyl]-2-nitro-1H-imidazole-1-ethanol (18), which, due to its activity and log P value, is a candidate for additional in vivo studies.
(7) The final approved log contained 72 problems, 64 of which received importance ratings greater than or equal to 2 on the three-point scale.
(8) All are satisfied by [Formula: see text], where N is the size of rod signal, constant for threshold; theta, theta(D) are steady backgrounds of light and receptor noise; varphi is the threshold flash with sigma a constant of about 2.5 log td sec; B the fraction of pigment in the bleached state.
(9) The results clearly demonstrate local separability in this log frequency and orientation discrimination domain.
(10) Positive correlations were observed between mean log fasting insulin concentration and all parameters of obesity except log triceps skinfold thickness in men.
(11) Cocaine, 3 microM, shifted the noradrenaline concentration response curve to the left about 0.4 log units in all renal vessel groups, thus renal vascular smooth muscle sensitivity to noradrenaline was significantly greater in vessels from rats receiving CyA than in vessels from control rats.
(12) Details of sexual activity and experience were followed by the use of daily logs.
(13) The results should be analysed by the Kaplan-Meier estimator, and patency rates should be compared by the log-rank test or Gehan's test.
(14) There was a significant negative correlation between propranolol level (log-transformed) and glycemic responses, suggesting that propranolol has direct effect on the latter.
(15) Evaluation of lymphocyte phenotype frequencies, functional responses, serum immunoglobulin levels, and autoantibodies was completed for 38 individuals (i.e., 10 families) who were exposed to pentachlorophenol (PCP) in manufacturer-treated log houses.
(16) Spatial summation was found to decrease by 30-50% as the cell was light-adapted to a threshold some 4 log units above the dark-adapted one.
(17) The difference in binding capacity was of the same order of magnitude as the difference in sodium content, indicating that the excess sodium in the thoracic aortas from the hypertensive rats was osmotically inactive and thus unable to cause water logging.
(18) The equations of best fit of log(wax esters) vs age suggested that sebum secretion declines about 23% per decade in men and 32% per decade in women.
(19) Challenge studies using the standard National Veterinary Services Laboratory laryngotracheitis (LT) challenge virus (Log 10(6.7) EID50 per ml) were conducted to assess the presence of maternal protection in chicks of various ages (1, 7, 14, 21, and 28 days).
(20) In lymph node-positive patients a trend between high TA1 reactivity and a worse overall survival was also noted (log rank P = 0.128; Wilcoxon P = 0.054), with a 6-year survival of 42% in the strongly reactive tumors (n = 16) and 65% in the negative to weakly reactive carcinomas (n = 105).