What's the difference between constant and isochromatic?
Constant
Definition:
(v. t.) Firm; solid; fixed; immovable; -- opposed to fluid.
(v. t.) Not liable, or given, to change; permanent; regular; continuous; continually recurring; steadfast; faithful; not fickle.
(v. t.) Remaining unchanged or invariable, as a quantity, force, law, etc.
(v. t.) Consistent; logical.
(n.) That which is not subject to change; that which is invariable.
(n.) A quantity that does not change its value; -- used in countradistinction to variable.
Example Sentences:
(1) Between 25 and 40 degrees C, the thermal dependencies of VR and f were approximately constant (Q10's of 1.31 and 1.36 got VR and f, respectively).
(2) By 24 hr, rough endoplasmic reticulum in thecal cells increased from 4.2 to 7% of cell volume, while the amount in granulosa cells increased from less than 3.5% to more than 10%; the quantity remained relatively constant in the theca but declined to prestimulation values in the granulosa layer.
(3) The norepinephrine values remained constant on the three days.
(4) At the same time the duodenum can be isolated from the stomach and maintained under constant stimulus by a continual infusion at regulated pressure, volume and temperature into the distal cannula.
(5) Rise time and fall time constants have been quantified for describing kinetics of response.
(6) Standard nerve conduction techniques using constant measured distances were applied to evaluate the median, ulnar and radial nerves.
(7) The stopped-flow technique was used to measure the rate constants for the reactions between the oxidized forms of peroxidase with luminol and the following substrates: p-iodophenol, p-bromophenol, p-clorophenol, o-iodophenol, m-iodophenol, luciferin, and 2-iodo-6-hydroxybenzothiazole.
(8) The family comprises at least three variable (V) gene segments, three constant (C) gene segments, and three junction (J) gene segments.
(9) This value is about 30 times higher than the association constant for guanine-cytosine base pair formation under the same experimental conditions.
(10) There is a relationship between the duration of stimulation (t) and the total heat production (H) of the type H = A plus bt, where A and b are constants.
(11) Naloxone injection into those rats exposed to constant illumination significantly increased hypothalamic levels of beta-endorphin compared to saline injected controls.
(12) [5alpha-(3)H]5alpha-Androst-16-en-3-one (5alpha-androstenone) was infused at a constant rate for 180min into the spermatic artery of a sexually mature boar.
(13) The birds were maintained at a constant temperature in, dim green light.
(14) We previously established that the binding constant (Ka) of this receptor site for the chemically synthesized model AGE, 2-(2-furoyl)-4(5)-(2-furanyl)-1H- imidazole-butyric acid (FFI-BA), on cells of the mouse macrophagelike cell line RAW 264.7 is identical to that for AGE proteins.
(15) On the other hand, if we correct for the population of HMM with degraded light chain 2, the difference in the binding constants in the presence and absence of Ca2+ may be as great as 5-fold.
(16) The matter is now in the hands of the Guernsey police and the law officers.” One resident who is a constant target of the paper and has complained to police, Rosie Guille, said the allegations had a “huge impact on morale” on the island.
(17) Stability of kinetic constants for a long period of time is demonstrated.
(18) The association constants K'A, KN, and K'N in the scheme (see article), were determined for the magnesium salts of ADP, adenyl-5'-yl imidodiphosphate AMP-P(NH)P, and PPi.
(19) As total pancreatectomy markedly reduces the pancreatic hormone level, leading to a mortal hypoglycaemia, we attempted to maintain plasma glucose within the normal range by constant I.V.
(20) Utilizing a range of operative Michaelis-Menten parameters that characterize phenytoin elimination via a single capacity-limited pathway, a situation assuming instantaneous absorption (case I) is compared with the situation in which continuous constant-rate absorption occurs (case II).
Isochromatic
Definition:
(a.) Having the same color; connecting parts having the same color, as lines drawn through certain points in experiments on the chromatic effects of polarized light in crystals.
Example Sentences:
(1) The contrast dependence of simultaneous masking has been measured using isochromatic yellow-black luminance sinusoids and isoluminant red-green chrominance gratings.
(2) Second, a variation of the phase of the spins in a direction orthogonal to the isochromats causes spins throughout the sample to refocus at different times.
(3) 84 children aged from 2 to 6 years were tested with three different pseudo-isochromatic plates: Velhagen Pflügertrident test, Lanthony Tritan Album and Ishihara test.
(4) The incidence of color deficient vision was investigated using the Pseudo-Isochromatic Plates on a relatively large and representative group.
(5) Zones with high fringe orders of isochromatics in the model correspond to areas with high density of the osseous tissue in equidensity pictures, and the trajectorial pattern in Plexiglas models mirrors the alignment of compressive and tensile cancellous trabeculae.
(6) Evaluation of the load-transfer characteristics of the various designs was based on comparison of the recorded isochromatic fringe distributions.
(7) First, interference causes a loss of transverse magnetization because of a variation in the phase of spins which lie on the same isochromat during the read gradient pulse.
(8) Using a Taylor series expansion of the phase shift of a moving isochromatic spin group in the presence of a magnetic field gradient, the refocusing effects of the Carr-Purcell-Meiboom-Gill pulse sequence on stationary nuclei and those with constant, rectilinear velocity are readily demonstrated.
(9) Through axial application of a vertical compressive load of 8 kg, equivalent to the joint reaction of 3000 N in the human knee joint, the patterns of the isochromatic fringes were observed and stresses around the knee joint were analyzed according to the size of the defect in the medial meniscus.
(10) From our results we can be sure that the colour test disk is at least as reliable for mass testing for colour blindness as the Ishihara isochromatic colour plates.
(11) Contrast sensitivity was measured in all subjects with isochromatic luminance gratings, as well as isoluminant chromatic gratings, modulated along several directions of a color space that represents color-opponent and luminance contrast (Krauskopf et al., 1986).
(12) Results of neuro-ophthalmologic examinations on VS patients showed relatively consistent abnormalities in figure copying, color vision tested by isochromatic plates, and stereopsis.
(13) The luminance contrast sensitivity (L) for a given isochromatic stimulus and the chromatic contrast sensitivity (C) for the corresponding isoluminance stimulus were measured in rapid succession, under identical conditions, using red and green components with accurately known spectral distributions.
(14) In these conditions isoluminant and isochromatic stimuli were used with variable contrast and at different background luminances.
(15) Using isochromatic luminance gratings and isoluminant red-green color gratings, examined luminance and color discrimination in amblyopia were examined.
(16) A red contact lens (X-Chrom lens) worn on the nondominant eye by 12 color-defective subjects caused significant improvements on the Dvorine, Ishihara, and Hardy-Rand-Rittler pseudo-isochromatic color plate tests.
(17) (a) intra-individually, there is no significant correlation between the slope of the isochromatic lines and hue; (b) inter-individually, their Fehlfarben, respective their copunctual points, do not appear to stem from one population; (c) the extreme deuteranomalous do not reveal a trend towards or awau from protanopia.
(18) Colorimetrically, tables I, II, VII and VIII have figure and background colours aligned mainly along the deutan isochromatic lines and only table III is a clear protan plate.
(19) The size of the discrimination ellipse in normal observers is the same in both viewing conditions, but the use of the RLM technique reveals the extent of the isochromatic zones in colour deficient observers.
(20) To select colours for use in diagnostic plates a large number of colour defective subjects have made colour matches with the Lovibond Tintometer and the isochromatic data collected.