(n.) A flat, circular plate; as, a disk of metal or paper.
(n.) The circular figure of a celestial body, as seen projected of the heavens.
(n.) A circular structure either in plants or animals; as, a blood disk; germinal disk, etc.
(n.) The whole surface of a leaf.
(n.) The central part of a radiate compound flower, as in sunflower.
(n.) A part of the receptacle enlarged or expanded under, or around, or even on top of, the pistil.
(n.) The anterior surface or oral area of coelenterate animals, as of sea anemones.
(n.) The lower side of the body of some invertebrates, especially when used for locomotion, when it is often called a creeping disk.
(n.) In owls, the space around the eyes.
Example Sentences:
(1) These findings suggest that clonidine transdermal disks lower blood pressure in hypertensive patients, but produce local skin lesions and general side effects.
(2) These observations suggest that the liver secretes disk-shaped lipid bilayer particles which represent both the nascent form of high density lipoproteins and preferred substrate for lecithin-cholesterol acyltransferase.
(3) Opsin becomes incorporated into the disk membrane by a process of membrane expansion and fusion to form the flattened disks of the outer segment.
(4) Somatic and functional antigens of Dictyocaulus filaria were comparatively studied by means of disk electrophoresis.
(5) We performed a prospective study on 68 eyes of 68 patients to compare the vertical cup-disk ratio obtained with the video-ophthalmograph to that obtained with manual analysis of black-and-white stereoscopic photographs.
(6) Visible light activates a large guanosine cyclic 3',5'-phosphate (cGMP)- and phosphodiesterase (PDE)-dependent infrared light-scattering change in suspensions of photoreceptor disk membranes.
(7) Three disks of different sizes (10, 25, and 45 mm in diameter) were attached to the edge of the baresthesiometer, and pressures of 1, 3 and 5 kg were applied to the 10 mm disk, and 1, 3, 5, and 7 kg to the other disks.
(8) The hemolytic characteristics of 14 different polydimethyl-siloxane materials were studied, using a rotating disk device to shear whole human blood for 6000 sec.
(9) These optic disk anomalies occurred bilaterally with some inter- and intra-individual variable expressivity.
(10) This is the first reported case, to the best of my knowledge, of disk neovascularization occurring after intravenously injected, crushed, unfiltered, methylphenidate HCl tablets.
(11) We have investigated the relationship between rhodopsin photochemical function and the retinal rod outer segment (ROS) disk membrane lipid composition using flash photolysis techniques.
(12) We found that the Na-Ca exchanger is distributed throughout all membranes in contact with the extracellular space, including the sarcolemma, the transverse tubules (T-tubules), and the intercalated disks.
(13) The minimal inhibitory concentration of netilmicin determined by the agar dilution method was correlated with the disk diffusion zone of inhibition against 322 clinical isolates.
(14) The initiation step consisting of the binding of RNA with the 36S disk of protein was easily accomplished.
(15) The state of the intervertebral disks, intervertebral joints and cerebrospinal canal in degenerative vertebral diseases was assessed.
(16) It is concluded that although a rapid automated system for antibiotic sensitivity testing is desirable, the conventional disk agar diffusion method is easier to perform, more reliable, and a less expensive procedure for antibiotic sensitivity determination.
(17) The diagnostic accuracy of CT in cases of lumbar disk prolapse was investigated on the basis of a group of 158 of our own patients who were divided into three separate groups.
(18) Disk position was assessed inaccurately in either plane in patients with severe degenerative joint disease.
(19) Based on the morphology and magnetic anisotropy of the rod outer segment, the major phospholipid peak is attributed to the flat part of the disk membranes while the phospholipids of the plasma membrane are thought to contribute only to the minor peak.
(20) QC range for H. Influenzae ATCC 49247 were established using multiple HTM agar and broth base lots, three disk lots for each drug, and a number of test replicates consistent with the National Committee for Clinical Laboratory Standards M23-T guideline.
Reflector
Definition:
(n.) One who, or that which, reflects.
(n.) Something having a polished surface for reflecting light or heat, as a mirror, a speculum, etc.
(n.) A reflecting telescope.
(n.) A device for reflecting sound.
Example Sentences:
(1) A changed position of the mirror-reflector in the Rubin-2 thermovision unit as well as the use of an improved model of the couch-chair and a special cassette for electrochemical paper reduce the labour input and raise the information value of the method.
(2) As radiation sources, the following ones have proved useful: high-pressure mercury-vapour lamps, compound radiation systems consisting of high-pressure mercury-vapour burner, series coiled filament and reflector bulbs made of special glass as well as halogen metal-vapour lamps.
(3) We present applications to speckle reduction, detection of specular reflectors, attenuation estimation and ultrasound imaging.
(4) The likelihood for men to remarry is approximately five to six times higher and can be best interpreted as a reflector of the distribution of sexes on the "remarriage market", rather than as an expression of any differential priorities or attitudes between sex groups.
(5) It is estimated that about 30% of scintillation light can be collected at one end of such a counter, with a non-uniformity not greater than 10%, if magnesium oxide is used as the external reflector at all other surfaces.
(6) In this paper, it is demonstrated that the presence of a cepstral peak depends on the form of the probability density function (pdf) of the separation between reflectors.
(7) The data indicate that pharmacological stimulation of the peripheral arterial chemoreceptors by almitrine bismesylate in normoxic healthy humans causes reflectorically a slight renal vasoconstriction and a long-lasting inhibition of renal tubular sodium reabsorption.
(8) Therefore, the Doppler signal from a strong reflector distant from the center of the sample volume may mask the signal of a weak reflector located within the center.
(9) Moreover, strong echo-reflectors, such as calcification or prosthetic heart valves, create large acoustic shadowing effects behind which obtaining an ultrasound signal is difficult if not impossible.
(10) An even bigger motorcade collected us at the airport, security men in reflector shades jumping out and opening doors as our cars slowed down.
(11) Environmental noxious agents initiate hyper-reflectoric reactions of the mucosa, which seems to be the most impressive factor causing the change in rhinological diseases nowadays.
(12) The model includes magnitude and position of specular echoes, a random description of echoes from diffuse reflectors, and a parametric characterization of attenuation.
(13) Buried in the berm will be radar reflectors, magnets and a “Storage Room”, constructed around a stone slab too big to be removed via the chamber entrance.
(14) The use of levels of plasma HVA as a noninvasive reflector of DA function provides a research strategy for longitudinal studies of neuroleptic effects in schizophrenia.
(15) Reverberation produces a set of equally spaced artifactual echoes distal to the real reflectors.
(16) The shock wave ellipsoid reflector position is adjusted to the stone with a computer assisted positioning device.
(17) Four reflectors are fixed on the face of subject; two others are fixed on a metallic system that is glued on the buccal face of inferior canines.
(18) The manual therapy enables the treatment of the reflectoric expression of these disturbances.
(19) Disturbance of muscle coordination by reflectoric afferences from cervical or shoulder regions.
(20) On the other hand, extreme reflectoric muscle contractions, caused by a rotational trauma can cause chondromalacic lesions in the femoro-patellar joint, broadening the syndrome of the "unhappy triad" to an "unhappy tetrad".