(n.) One of two straps, chains, or ropes of a harness, extending from the collar or breastplate to a whiffletree attached to a vehicle or thing to be drawn; a tug.
(v. t.) A mark left by anything passing; a track; a path; a course; a footprint; a vestige; as, the trace of a carriage or sled; the trace of a deer; a sinuous trace.
(v. t.) A very small quantity of an element or compound in a given substance, especially when so small that the amount is not quantitatively determined in an analysis; -- hence, in stating an analysis, often contracted to tr.
(v. t.) A mark, impression, or visible appearance of anything left when the thing itself no longer exists; remains; token; vestige.
(v. t.) The intersection of a plane of projection, or an original plane, with a coordinate plane.
(v. t.) The ground plan of a work or works.
(v. t.) To mark out; to draw or delineate with marks; especially, to copy, as a drawing or engraving, by following the lines and marking them on a sheet superimposed, through which they appear; as, to trace a figure or an outline; a traced drawing.
(v. t.) To follow by some mark that has been left by a person or thing which has preceded; to follow by footsteps, tracks, or tokens.
(v. t.) Hence, to follow the trace or track of.
(v. t.) To copy; to imitate.
(v. t.) To walk over; to pass through; to traverse.
(v. i.) To walk; to go; to travel.
Example Sentences:
(1) Glyceryl p-aminobenzoate and amyl p-dimethyl-aminobenzoate were labeled on 1 and 3 sunscreens, respectively, but glyceryl p-aminobenzoate was not found in any of them and only traces of amyl p-dimethylaminobenzoate were found in 1 sunscreen.
(2) Throughout the entire cultivation cytidyl derivatives occurred in trace quantities.
(3) persisted and was more abnormal in 23% of the cases including specific tracings in 37%.
(4) Traces of the sulphoxide of butylmercapturic acid have been found in rat urine but not in rabbit urine.
(5) No 7 beta-hydroxysteroid dehydrogenase activity and only a trace of 7 alpha-hydroxysteroid dehydrogenase activity could be demonstrated when bile acid was deleted from the growth medium.
(6) Silicon, a relatively unknown trace element in nutritional research, has been uniquely localized in active calcification sites in young bone.
(7) Although various micronutrients (vitamins and trace elements) have also been found to have either a positive or negative association, findings were more clear-cut for the different food items contributing the micronutrients than for the specific micronutrients themselves.
(8) Methods used in tracing and improving cooperation of subjects are described.
(9) Her black persona unravelled this week when Ruthanne and Larry Dolezal, a couple named on her Montana birth certificate as her biological parents, told Spokane’s KREM 2 News that her ancestry was German and Czech, with traces of Native American.
(10) they are shown to inhibit in vitro the release of iron from acidified host cell cytosol, consisting mostly of hemoglobin, a process that could provide this trace element to the parasite.
(11) Thus, the carotid pulse tracing provides an accurate reproduction of the morphology of the pressure tracing recorded from the ascending aorta, and when calibrated by peripheral blood pressure measurement, it can be used to calculate LV pressure throughout ejection.
(12) Mutant C grew anaerobically in the light, whereas mutant G1 was light sensitive and produced only trace amounts of bacteriochlorophyll a (0.6 mumole per ml of protein).
(13) The effect was shown to be due to caldesmon and not to a trace contaminant by its full reversibility after addition of a monospecific caldesmon antibody.
(14) Of 15 organochlorine compounds analyzed, trace amounts mainly of p,p-DDE and polychlorinated biphenyls (PCBs) were detected, but could not be quantitated.
(15) Fifty physiologically characterized units were injected with horseradish peroxidase (HRP) or Lucifer yellow CH (LY) and their processes were traced to the crista.
(16) Polysomnography has revealed that this drug has several interesting qualities that benzodiazepines do not possess: stages 3-4 increase, stage 2 is unchanged or slightly reduced and no abnormal changes are detected on the EEG tracing.
(17) We find that the labelled cell has a myelinated axon, but that the axon loses its myelin within 50 microns of the soma and has not yet been traced further.
(18) He is likely to propose increased funding of plant disease experts, the stepping up of surveillance at ports of entry and a Europe-wide "plant passport" system to trace the origins of all plants coming into Britain.
(19) In addition, the postulated personality for PD may predispose to hard work, perspiration, and increased exposure to putative trace elements in the water supply.
(20) The voltage trace is then analysed with a piece of transparent paper, on which lines corresponding to solutions of the diffusion equation convert the time axis of the voltage trace into a concentration axis.
Tracer
Definition:
(n.) One who, or that which, traces.
Example Sentences:
(1) If tracer is introduced into the carotid artery after osmotic treatment, brain uptake is increased by a net factor of 50 (a factor of 70 due to elevation of PA, multiplied by 7 due to infusion by the carotid route) as compared to uptake by normal, untreated brain with infusion into a peripheral vein.
(2) Limitations include the facts that the tracer inventory requires a minimal survival period, can only be done postmortem, and has low resolution for cuts of the vagal hepatic branch.
(3) Thus, the enzyme-immunoassay shows specificity and sensitivity comparable to radioimmunoassay making use of radioactive tracer unnecessary.
(4) By contrast, there was a rapid exchange of tracer Leu carbon between placenta and fetus resulting in a significant flux of labeled KIC from placenta to fetus.
(5) Acetylcholine caused a rapid decrease (42% in 1 min) in 36Cl content of control acini which were preloaded with tracer for 12 min, but only a 23% decrease in acini of reserpine-treated rats.
(6) An isotopic steady state was established in five pregnant animals by the daily feeding of a tracer dose of cholesterol-4-(14)C. Comparison of maternal and fetal serum cholesterol SA revealed that an average of 42.6% of the serum cholesterol in the term fetus originated by transfer from the maternal blood.
(7) Injection of the tracer substance wheat germ agglutinin-horseradish peroxidase (WGA-HRP) directly into the basilar pontine nuclei using a ventral surgical approach resulted in the labeling of somata in many areas both rostral and caudal to the basilar pons.
(8) These results suggest that [99mTc]LDL acts as a trapped ligand in vivo and should therefore, be a good tracer for noninvasive quantitative biodistribution studies of LDL.
(9) The organization of the afferent and efferent connections of the sagittal Zones A and B of the cerebellar cortex of the rat have been studied using wheat-germ agglutinin conjugated to horseradish peroxidase as a tracer.
(10) Three exponential terms were required to fit the data for each of the tracers in all six experiments.
(11) The radiation dose to the tumor after a single injection of 500 muCi 131I-MAb 139H2 was 1,300 cGy over 7 days, which appeared slightly lower than the dose calculated after administration of a tracer dose of iodinated MAb 139H2.
(12) A light and electron microscopic double immunostaining technique was employed using the beta subunit of unconjugated cholera toxin as a neural tracer.
(13) Coronary collateral blood flow was measured with tracer microspheres in 3 different experimental conditons in the dog heart: 1. after occlusion of a large coronary artery in the in situ beating heart, 2. after occlusion of a small coronary artery in the in situ beating heart and 3. after occlusion of a large coronary artery in the isolated, empty beating, blood-perfused heart.
(14) This exogenous protein tracer could be seen in apical vacuoles and phagosomes in the cuboidal parietal epithelium.
(15) In the present study, we assessed transepithelial transport of Na+, K+ and Cl- in the isolated initial segment (P1) of rabbit colon in vitro using radioisotopic tracer fluxes and electrophysiological techniques.
(16) Each group of cattle consisted of six permanent members, two members fistulated at the oesophagus and one worm-free tracer calf.
(17) The immunoreactivity of the tracer can instead be lower than that shown by the standard, although it must not be too different.
(18) This reconstruction only requires very general assumptions, such as tracer-tracee indistinguishability and mass conservation; in particular it is independent of the glucose model structure, i.e., number of compartments and their interconnections.
(19) When normalized with respect to scala cross-section, the process of tracer movement across the spiral ligament is similar in the basal and third turns.
(20) The electron-dense tracers, ferritin, peroxidase, Thorotrast, and latex beads were all ingested but none was phagocytized.