(a.) Having the power or quality of acting; causing change; communicating action or motion; acting; -- opposed to passive, that receives; as, certain active principles; the powers of the mind.
(a.) Quick in physical movement; of an agile and vigorous body; nimble; as, an active child or animal.
(a.) In action; actually proceeding; working; in force; -- opposed to quiescent, dormant, or extinct; as, active laws; active hostilities; an active volcano.
(a.) Given to action; constantly engaged in action; energetic; diligent; busy; -- opposed to dull, sluggish, indolent, or inert; as, an active man of business; active mind; active zeal.
(a.) Requiring or implying action or exertion; -- opposed to sedentary or to tranquil; as, active employment or service; active scenes.
(a.) Given to action rather than contemplation; practical; operative; -- opposed to speculative or theoretical; as, an active rather than a speculative statesman.
(a.) Brisk; lively; as, an active demand for corn.
(a.) Implying or producing rapid action; as, an active disease; an active remedy.
(a.) Applied to a form of the verb; -- opposed to passive. See Active voice, under Voice.
(a.) Applied to verbs which assert that the subject acts upon or affects something else; transitive.
(a.) Applied to all verbs that express action as distinct from mere existence or state.
Example Sentences:
(1) Tryptic digestion of the membranes caused complete disappearance of the binding activity, but heat-treatment for 5 min at 70 degrees C caused only 40% loss of activity.
(2) A study revealed that the percentage of active sperm in semen 30 seconds after ejaculation was 10.3% when a nonoxynol 9 latex condom was used as opposed to 55.9% in a nonspermicidal condom.
(3) The most actively proliferating region of the excurrent duct system is zone 3 of the epididymis, whereas the least active region is the ductuli efferentes.
(4) Spectral analysis of spontaneous heart rate fluctuations, a powerful noninvasive tool for quantifying autonomic nervous system activity, was assessed in Xenopus Laevis, intact or spinalized, at different temperatures and by use of pharmacological tools.
(5) Activity of Na,K-ATPase activity was measured as a functional marker for synaptosomal membranes.
(6) The antiarrhythmic activity similar to that of quinidine (with ca.
(7) The microsomal preparations from untreated Syrian golden hamster livers exhibited higher activities of N-demethylation towards the macrolide antibiotics, erythromycin and troleandomycin, than those from untreated and phenobarbital-treated rats.
(8) Patient plasma samples demonstrated evidence of marked complement activation, with 3-fold elevations of C3a desArg concentrations by the 8th day of therapy.
(9) After stimulation with lipopolysaccharide and calcium ionophore A23187, culture supernatants of clones c18A and c29A showed cytotoxic activity against human melanoma A375 Met-Mix and other cell lines which were resistant to the tumor necrosis factor, lymphotoxin and interleukin 1.
(10) Phospholipid methylation in human EGMs is distinctly different from that in rat EGMs (Hirata and Axelrod 1980) in that the human activity is not Mg++-dependent, and apparent methyltransferase I activity is located in the external membrane surface.
(11) Increased plasmin activity was associated with advancing stage of lactation and older cows after appropriate adjustments were made for the effects of milk yield and SCC.
(12) Arachidic acid was without effect, while linoleic acid and linolenic acid were (on a concentration basis) at least 5-times less active than arachidonic acid.
(13) Following in vitro C activation in NHS by delta IgG, the 40 KD C4d component increased markedly.
(14) One hour after direct mechanical cardiomassage (DMCM) a moderately pronounced edema of the intercellular spaces in the basal compartment of the seminiferous epithelium, normal content of lactate and succinate dehydrogenases, and a certain decrease in the activity of glucose-6-phosphate dehydrogenases and NAD- and NADP-diaphorases were noted.
(15) We conclude that first-transit and blood-pool techniques are equally accurate methods for determining EF when the time-activity method of analysis is employed.
(16) This difference was not due to ATPase activity in the assay.
(17) In the surface epithelial cells, the basolateral cell surface showed moderate enzymatic activity.
(18) Both the vitellogenesis and the GtH cell activity are restored in the fish exposed to short photoperiod if it is followed by a long photoperiod.
(19) It was shown in experiments on four dogs by the conditioned method that the period of recovery of conditioned activity after one hour ether anaesthesia tested 7 to 7.5 days.
(20) Together these results suggest that IVC may operate as a selective activator of calpain both in the cytosol and at the membrane level; in the latter case in synergism with the activation induced by association of the proteinase to the cell membrane.
Valid
Definition:
(a.) Strong; powerful; efficient.
(a.) Having sufficient strength or force; founded in truth; capable of being justified, defended, or supported; not weak or defective; sound; good; efficacious; as, a valid argument; a valid objection.
(a.) Having legal strength or force; executed with the proper formalities; incapable of being rightfully overthrown or set aside; as, a valid deed; a valid covenant; a valid instrument of any kind; a valid claim or title; a valid marriage.
Example Sentences:
(1) Unfortunately, due to confidentiality clauses that have been imposed on us by the Department of Immigration and Border Protection, we are unable to provide our full names and … titles … However, we believe the evidence that will be submitted will validate the statements that we are making in this submission.” The submission detailed specific allegations – including names and dates – of sexual abuse of child detainees, violence and bullying of children, suicide attempts by children and medical neglect.
(2) Recently, the validity of the American Thoracic Society (ATS) standards for selection of spirometric test results has been questioned based on the finding of inverse dependence of FEV1 on effort.
(3) Single-case experimental designs are presented and discussed from several points of view: Historical antecedents, assessment of the dependent variable, internal and external validity and pre-experimental vs experimental single-case designs.
(4) An application is made to the validity of cancer risk items included in a cancer registry.
(5) Although measurements are easily obtained with a tape measure, the validity of these measurements is not known.
(6) This observation, reinforced by simultaneous determinations of cortisol levels in the internal spermatic and antecubital veins, practically excluded the validity of the theory of adrenal hormonal suppression of testicular tissues.
(7) However, each of the studies had numerous methodological flaws which biased their results against finding a relationship: either their outcome measures had questionable validity, their research designs were inappropriate, or the statistical analyses were poorly conceived.
(8) We found no statistically significant difference in one-year, biochemically validated, sustained cessation rates between the group offered the long-term follow-up visits (12.5%) and the group given the brief intervention (10.2%).
(9) Although, it did give me the confidence to believe that my voice was valid and important.
(10) Both demonstrated concurrent validity and feasibility.
(11) Specifically, we apply techniques of data preprocessing, orthogonality constraints, and validation of solutions in a complete TC analysis, for the first time using actual MEP data.
(12) However, no evidence could be discerned to support its validity as a measure of a patient's treatment outcome.
(13) Validation studies, to show that the method is precise, accurate and rectilinear, have been carried out on four linctus formulations and two pastille formulations.
(14) In this paper the domain of validity of the unlabelled and labelled minimal models of glucose disappearance is studied.
(15) However, valid electroacoustic evaluation of the DMHAs cannot be accomplished using the conventional hearing aid test box.
(16) Validity of the fructosamine assay allows its potential use as a mass screening test for diabetes in these populations (USA, Africa, Caribbean...).
(17) Furthermore, CV1% and DV6% have proved to be valid parameters in finding differences in the light reflex in non-age-matched study groups.
(18) A role for cAMP in the process of LHRH release was suggested several years ago, but only recently has the validity of this notion come under close scrutiny.
(19) However the study does not permit to reach any valid conclusions; further elaborate investigations alone could prove the useful role of genetic influence in the propagation of lepromin sensitivity to the subsequent sibs.
(20) From the subcutaneous transplanted tumors a large number of MLuC1-positive tumor cells could easily be recovered, thus indicating the validity of the in vivo methodology.