(n.) One who observes, or pays attention to, anything; especially, one engaged in, or trained to habits of, close and exact observation; as, an astronomical observer.
(n.) One who keeps any law, custom, regulation, rite, etc.; one who conforms to anything in practice.
(n.) One who fulfills or performs; as, an observer of his promises.
(n.) A sycophantic follower.
Example Sentences:
(1) The patterns observed were: clusters of granules related to the cell membrane; positive staining localized to portions of the cell membrane, and, less commonly, the whole cell circumference.
(2) However, this deficit was observed only when the sample-place preceded but not when it followed the interpolated visits (second experiment).
(3) In conclusion, in S-rats a glucose-stimulated insulin release is accompanied by an increase in IBF, but this is not observed in P-rats.
(4) The combined immediate and delayed responses to fleas in the dog are as observed by other investigators in man and guinea pigs.
(5) However, when cross-linked to anti-CD4 or anti-CD8 antibodies a markedly enhanced proliferation of the corresponding subpopulation is observed.
(6) Using monoclonal antibodies directed against the plasma membrane of Madin-Darby canine kidney (MDCK) cells, we demonstrated previously that a glycoprotein with an Mr = 23,000 (gp23) had a non-polarized cell surface distribution and was observed on both the apical and basolateral membranes (Ojakian, G. K., Romain, R. E., and Herz, R. E. (1987) Am.
(7) Stimulation is also observed with mixtures of APC expressing DPw3 and APC expressing A1, and likewise, DPw3+ APC become stimulatory when preincubated with supernatants from A1-positive cells.
(8) For this reason, these observations should not be disregarded.
(9) No differences between the two substances were observed with respect to side effects and general tolerability.
(10) The testing of other models and their failure to describe the kinetic observations are discussed.
(11) The extrusion of granules into the intercellular space via exocytosis is frequently observed.
(12) The time of observation varied between 2 and 17 years.
(13) Insensitive variants die more slowly than wild type cells, with 10-20% cell death observed within 24 h after addition of dexamethasone.
(14) The subcellular distribution of sialyltransferase and its product of action, sialic acid, was investigated in the undifferentiated cells of the rat intestinal crypts and compared with the pattern observed in the differentiated cells present in the surface epithelium.
(15) No reaction product was observed in the lamellar areas.
(16) Cyanoacrylate and PDS coatings were not detectable after 6 weeks while PHBA and PLLA coatings were still observed after 48 weeks.
(17) A total of 13 ascertainments of folate sensitive autosomal fragile sites is observed, of which 10q23 fragility appears to be the most frequent.
(18) This new observation offers good possibilities to study the metabolism of tryptophan at the cellular level.
(19) These membrane perturbation effects not observed with bleomycin-iron in the presence of a hydroxyl radical scavenger, dimethyl thiourea, or a chelating agent, desferrioxamine, were correlated with the ability of the complex to generate highly reactive oxygen species.
(20) The fluctuations in [Ca2+]i measured with fura-2 were synchronized among the population of cells observed and were sensitive to extracellular Ca2+ concentration ([Ca2+]o).
Parallax
Definition:
(n.) The apparent displacement, or difference of position, of an object, as seen from two different stations, or points of view.
(n.) The apparent difference in position of a body (as the sun, or a star) as seen from some point on the earth's surface, and as seen from some other conventional point, as the earth's center or the sun.
Example Sentences:
(1) We present a paradigm to estimate local affine motion parallax structure from a varying image irradiance pattern.
(2) There is evidence that OKNe is also sensitive to relative depth cues such as motion parallax, which we suggest helps the system to segregate the object of regard from other elements in the scene.
(3) The 3D spine images were extremely true to life and could be rotated around all three principle axes (constituting a movie), so that an illusion of head-motion parallax was created.
(4) In the second experiment it was shown that stroboscopic illumination disrupted accurate jumping but animals could jump accurately to a platform when only the leading edge was visible, showing that they depend on motion cues but not motion parallax.
(5) Furthermore, there was good agreement when parallax analysis was applied both to quenching by brominated and spin-labeled molecules, suggesting that the analysis is valid in both cases.
(6) A monocularly viewed surface specified by parallax alone was seen as a rigid, corrugated surface translating along a fronto-parallel path.
(7) In each experiment three conditions were compared: an active condition in which the coupling of parallax shifts and observer's head movements operated, a passive condition in which it did not, and a real-life set-up to measure the maximum reliability in depth estimation.
(8) These findings indicate large visual illusions in the nighttime situation and suggest that the ineffectiveness of relative motion parallax may be an important part of night approach problems.
(9) This indicates that the depth reported by parallax analysis is accurate and that the spin labels residue very close to their predicted locations in the membrane.
(10) Various gait parameters were measured from high-speed film, and after parallax correction, compared with the theoretical predictions.
(11) To correct for parallax error, radiopaque markers are positioned between the patient and the x-ray source.
(12) The method involves determination of the parallax in the apparent location of fluorophores detected when quenching by phospholipids spin-labeled at two different depths is compared.
(13) Because of parallax, the relationship between the ilioischial line and the teardrop changes for views varying as little as 10 degrees in horizontal obliquity from the true AP roentgenogram.
(14) We previously introduced the "parallax" method, which uses fluorescence quenching by spin-labeled lipids in order to measure the depth of molecules within a membrane [Chattopadhyay, A., & London, E. (1987) Biochemistry 26, 39-45].
(15) To establish the extent to which a parallax-effect of differing angles of X-ray beam relative to the patient can influence the radiologic assessment of carinal level, we measured the tracheal-vertebral distance at the carina in 29 lateral radiographs of neonates, infants and children, prepared diagrams of the loci of carinal beam intercept of the vertebral column for different angles of beam to body, from tracings of lateral radiographs of two 2-week-old infants, one with trachea of normal length and one with short trachea; of a nine-year-old child with short trachea, and of a ten-year-old with normal trachea, and made radiographs of a postmortem tracheobronchogram of a two-day-old infant at different beam angles.
(16) This prediction was confirmed by the experimental determination of chromatic parallax for two commercially available achromatizing lenses.
(17) The hypothesis was tested that the coupling of parallax shifts between objects depicted on a monitor screen around a fixation point with the head movements of an observer viewing this screen monocularly around a point coinciding with the fixation point is sufficient to create a convincing depth impression and to enable the observer to make reliable estimations of depth.
(18) Traditionally, parallax disparities refer to points that are well defined within the objects, such as edges or boundaries.
(19) Additional experiments indicated that the deficit in performance by MS cats was not reduced either by the administration of amphetamine or by increases in cues for motion parallax.
(20) The next step was to demonstrate that parallax is also significant as a way of segmenting the visual scene into separate objects.