(n.) An opening; an open space; a gap, cleft, or chasm; a passage perforated; a hole; as, an aperture in a wall.
(n.) The diameter of the exposed part of the object glass of a telescope or other optical instrument; as, a telescope of four-inch aperture.
Example Sentences:
(1) Both apertures were repaired with great caution using individual sutures without resection of the hernial sac.
(2) By moving an electronic pen over a digitizing tablet, the subject could explore a line drawing stored in memory; on the display screen a portion of the drawing appeared to move behind a stationary aperture, in concert with the movement of the pen.
(3) The procedure consists of a Kirschner wire used as the means of traction on the remaining soft tissue of the lower lip, using the upper teeth or pyriform aperture bone as remote fixed points for tissue traction.
(4) The calibrated aperture in the bottom of each well is small enough to retain fluid contents by surface tension during monolayer growth, but also permits fluid to enter the wells when transfer plates are lowered into receptacles containing washing buffer or test sera.
(5) Acute toxicity consisted primarily of pain within the AA aperture (74%), pain outside the aperture (33%), and bladder spasm (26%) or systemic stress (25%).
(6) Latex particles, including BCR Certified Reference Material CRM 166a, have important applications for checking linearity and for calibrating aperture-impedance instruments used to determine red-cell volumes.
(7) The distance between the apertures on the screen as well as the subject's distance from the screen served as experimental parameters.
(8) When the highly crystalline core contents are suitably oriented to transmit their Bragg reflections through the objective aperture, regular fringes separated by 2-9.5 A have been visualized.
(9) Aperture size was modulated during flight on some trials in an attempt to test between these possibilities, but the results were inconclusive.
(10) When examined with the 3 mm aperture, the average resolving power of the IOLs was 81% of the diffraction limit; when examined with the 4 mm aperture, the average resolving power was 67% of the diffraction limit.
(11) Its principle consists in repairing the tissue defect resulting from the excision of the lower lip by the additional surgical removal of one or two soft tissue triangles from the region of the nasolabial fold and in achieving primarily, by means of horizontal relieving incisions at the base of the lip defect, an extension of the mouth aperture.
(12) Temporal fluctuations of stomatal aperture are important to water use efficiency.
(13) Specific microscope components and objectives are used, and the numerical apertures are adjusted such that light diffraction colors are produced to allow differentiation of the various biological entities and their habitat materials.
(14) Topographical corneal thickness changes were monitored in 10 subjects who each wore a hydrogel contact lens with a large central aperture ("donut" lens) for 6 hours.
(15) The theory is based on a three-dimensional model and the electromagnetic field is assumed to be generated by a prescribed electric field along a ring-shaped aperture.
(16) Quantitative analysis of an area 27 microns in diameter, or a total analysed volume of 1.1 microns3, was performed by using a mechanical aperture in the ion optical system.
(17) We evaluated both low- and high-power lenses and varied the input aperture size between 1, 3, and 5 mm.
(18) Subjects were asked to match the speeds of two moving random-dot patterns seen through circular apertures.
(19) However, our experience has shown us that in certain cases, there are some possibilities of aperture if we feel ourself free enough with our medical identity and if we keep silent as long as the patient is not able to hear us.
(20) The estimated doses to the third, fourth, fifth, and sixth cranial nerves was calculated at a saggital plane 13 to 15 mm from the pituitary by using computer-drawn dosimetry charts for the respective aperture size.
Slit
Definition:
() 3d. pers. sing. pres. of Slide.
(imp. & p. p.) of Slit
(n.) To cut lengthwise; to cut into long pieces or strips; as, to slit iron bars into nail rods; to slit leather into straps.
(n.) To cut or make a long fissure in or upon; as, to slit the ear or the nose.
(n.) To cut; to sever; to divide.
(n.) A long cut; a narrow opening; as, a slit in the ear.
Example Sentences:
(1) There was no evidence for ocular trauma, disease, or vascular malformation by slit-lamp examination and gonioscopy.
(2) In normal kidneys fixed by perfusion with tannic acid and glutaraldehyde, glomerular slit diaphragms have been reported to consist of highly ordered and isoporous substructures with a zipper-like configuration.
(3) Neutral dextran clearances for radii greater than 30 A were elevated during the PEAK period, and, concurrently, there was extensive intraglomerular microthrombosis, obliteration of foot processes, and disruption of filtration slit diaphragms.
(4) Neovascular responses were evaluated by daily slit-lamp observations and terminal whole-mount and histologic examinations of colloidal carbon-perfused vessels.
(5) Only 5 or 6 patients could be examined per hour with the 60D slit-lamp compared with 30-35 examined by reading retinal photographs.
(6) This flap is formed by a triangle-shaped excision combined with cranial and caudal slitting of the periosteum.
(7) Negative slit smears for AFB from the nodules repeatedly and the histology of one on the skin nodules clinched the diagnosis of multicentric reticulohistiocytosis.
(8) Incisional slit grafting utilizes larger numbers of smaller grafts than does traditional punch grafting.
(9) After amputation of the closed tip, a cap from a syringe was inserted via a slit made at the base into one prong of a pair of nasal cannulae.
(10) The use of a standard 35 mm camera with a spot metering system to take slit-lamp photographs is described.
(11) Light scatter from epithelial cells in a slit-scan flow system is modeled using the Fraunhofer condition of scalar diffraction theory.
(12) Depending on the slit width of the illumination source, a typical endothelial photomicrograph contains three or four distinct zones.
(13) By using a slit plate, scanographic arterial studies can be performed with a tomographic attachment of an X-ray unit that is normally used for routine radiographic examinations.
(14) The present study, however, qualitatively evaluates the unsharpness of redundant shadows of the mandibular ramus, especially with reference to the effects of first-slit width.
(15) Microcirculation is clearly visible and can be observed on the conjunctival mucosa by means of any microscope and notably with the slit lamp microscope of ophtalmologists.
(16) The dark, luxury air in the silent bedrooms of empty riverside apartments, their identical curving blocks clustered in threes and fours, grim and silent as gill slits, will be theirs.
(17) For the purpose of covering the demerits of the conventional sliding tube, a new slit sliding tube which is made up of three parts was devised by us.
(18) The optimal slit width in the ordinary roentgenokymographic device was found to equal 0.5+0.03 mm, and in the protected roentgenokymographic device the investigation of adults and children indicated 0.15+0.02 and 0.22+0.02 mm, respectively.
(19) Sequential photomicrographs of RBCs passing through interendothelial slits (IES) in walls of venous sinuses in rat spleen were obtained by video recording in vivo microscopic views.
(20) At both stages and with both dextran fractions the following results were obtained: (a) dextran was retained for up to 3 h (the longest interval studied) in the plasma at high concentration; (b) there was a sharp drop in the concentration of tracer between the inner, looser portions of the basement membrane (lamina rara interna) and its outer denser portions (lamina densa), (c) accumulation of dextran was seen in the mesangial areas with time; and (d) no accumulation of dextran was seen in the slits at any time.