(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).
Homeothermic
Definition:
Example Sentences:
(1) While in the brains of adult homeothermic vertebrates (with thermo-regulation: mammals, birds) the di-sialoganglioside GD1a predominates, in the brain of poikilotherms (without thermo-regulation: e.g.
(2) Thus, whereas a change in central MSH sensitivity may contribute to reduced fever in aged homeotherms, a reduction in central pyrogen receptors appears to be the most parsimonious explanation.
(3) The relationship between body size and basal metabolic rate (BMR) in homeotherms has been treated in the literature primarily by comparison between species of mammals or birds.
(4) Some homeothermic animals can survive adverse conditions by hibernation, i.e., by reducing their body temperature in accordance with ambient temperature, thus reducing metabolism and vital functions.
(5) By extension these findings implicate the Na+ pump as a heat source in the evolution of the homeotherms.
(6) On the 15th day after hatching, chinstrap chicks were completely, and gentoo chicks almost completely, homeothermic.
(7) These results may indicate that the homeothermic metabolic response in late embryos is O2-conductance-limited and power-limited as previously suggested.
(8) For mild cooling (32 degrees C), the Q10 in 18-day-old embryos was about 1.5, while 12- and 16-day-old embryos had a Q10 value of about 2, indicating that a feeble homeothermic metabolic response to cooling appears in late prenatal embryos.
(9) R-band exons in homeotherms but not G-band exons have directionally acquired GC-rich wobble bases and the corresponding codon usage: CpG islands in mammals are specific to R-band exons, exons not facultatively heterochromatinized, and are independent of the tissue expression pattern of the gene.
(10) The carp muscle enzyme was less sensitive to AMP inhibition than the muscle enzyme from a homeothermic mammal.
(11) This observation, when coupled with the experimental results, suggests that the effect of low [K]o on membrane permeability in homeothermic preparations of cardac muscle should be reevaluated.
(12) The hibernation season in the arctic ground squirrel (Citellus undulatus) is broken into 8- to 18- day cycles by short homeothermal periods during which the carboydrate reserves depleted during hibernation are replenished.
(13) The relative susceptibility of rabbit (homeothermic) kidney to mercury intoxication was compared to that of Coho salmon (poikilothermic) kidney to mercury intoxication was compared to that of Coho salmon (poikilothermic) kidney over temperature ranges consistent with the habitat of each of the two species.
(14) We have compared changes in axon numbers in the developing optic nerves of eight homeotherms (seven mammals and one bird) using data from the available literature and our own material.
(15) Phylogenetic data indicate that the complete psysiological and behavioral manifestations of sleep are unique to homeotherms; furthermore "ontogeny recapitulates phylogeny" in the parallel development of slow wave sleep and thermoregulation as exemplified in the opossum.
(16) The adult tapeworm lives in the intestine of a homeothermic host and has a pattern of very active and never ending growth.
(17) Color-coded liquid plastic was injected intraparenchymally (not into the blood vessels) into more than 300 hearts of homeotherms--including dog, cat, sheep, beef, horse, mammalian dolphins, chickens, turkeys, etc.
(18) Increased host resistance to viral and bacterial infections has also been noted in homeotherms whose body temperature has been elevated by manipulation of ambient temperature.
(19) However, the effect of ambient temperature on intestinal transit in homeothermic neonates such as pigs, calves, and humans may be different from that in mice because neonatal mice are poikilothermic.
(20) The spadix of Symplocarpus foetidus L. maintains an internal temperature 15 degrees to 35 degrees C above ambient air temperatures of -15 degrees to +15 degrees C. For at least 14 days it consumes oxygen at a rate comparable to that of homeothermic animals of equivalent size.