(v. t.) To turn the course of, as water; to divert and distribute into subordinate channels; to diffuse; to communicate; to transmit; -- followed by to, into, on, upon.
(v. t.) To receive, as from a source or origin; to obtain by descent or by transmission; to draw; to deduce; -- followed by from.
(v. t.) To trace the origin, descent, or derivation of; to recognize transmission of; as, he derives this word from the Anglo-Saxon.
(v. t.) To obtain one substance from another by actual or theoretical substitution; as, to derive an organic acid from its corresponding hydrocarbon.
(v. i.) To flow; to have origin; to descend; to proceed; to be deduced.
Example Sentences:
(1) The interaction of the antibody with both the bacterial and the tissue derived polysialic acids suggests that the conformational epitope critical for the interaction is formed by both classes of compounds.
(2) The vascular endothelium is capable of regulating tissue perfusion by the release of endothelium-derived relaxing factor to modulate vasomotor tone of the resistance vasculature.
(3) Leumorphin is a 29-amino-acid peptide derived from preproenkephalin B. Intracerebroventricular (i.c.v.)
(4) A full-length cDNA encoding porcine heart aconitase was derived from lambda gt10 recombinant clones and by amplification of the 5' end of the mRNA.
(5) In animal experiments pharmacological properties of the low molecular weight heparin derivative CY 216 were determined.
(6) In addition to their involvement in thrombosis, activated platelets release growth factors, most notably a platelet-derived growth factor (PDGF) which may be the principal mediator of smooth muscle cell migration from the media into the intima and of smooth muscle cell proliferation in the intima as well as of vasoconstriction.
(7) Release of 51Cr was apparently a function of immune thymus-derived lymphocytes (T cells) because it was abrogated by prior incubation of spleen cells with anti-thymus antiserum and complement but was undiminished by passage of spleen cells through nylon-wool columns.
(8) PMNs could be primed for PMA-triggered oxidative burst by muramyl peptide molecules (MDP) and two of its adjuvant active nonpyrogenic derivatives.
(9) Recent studies have shown that an aberration in platelet-derived growth factor gene expression is unlikely to be a factor in proliferation of smooth-muscle cells.
(10) The macrophage-derived product, interleukin 1 (IL 1) is thought to play an important regulatory role in the proliferation of T lymphocytes; however, its mechanism of action is unknown.
(11) In the upper limb and facial forms of familial amyloidotic polyneuropathy first recorded in Swiss and Finns respectively, the differences in their patterns of neurological disease and ocular lesions could be the result of their amyloids deriving from proteins other than prealbumin.
(12) The antiproliferative activity of IFN was studied using the parental L cell line, a tk- derivative, and a tk- (tk+) subline into which the tk gene of herpes simplex virus was introduced.
(13) Bipolar derivations with the maximum PSE always included the locations with the maximum PSE obtained from a linked ears reference.
(14) Only those derivatives with a free amino group and net positive charge in the side chain were effective.
(15) Northern blot analysis with an 18-mer radiolabelled oligonucleotide, derived from an ALP specific cDNA clone, revealed a specific mRNA of about 700-800 nucleotides in HS-24 tumor cells.
(16) The mortality data were derived from the reports by Miyagi Prefectural Government.
(17) Ferrocene derivatives, in general, show a degree of versatility, coupling the electron-transfer reactions of many enzymes.
(18) The ADAM derivative of carnitine was separated from decomposition products of the reagent and related compounds such as amino acid derivatives on a silica gel column eluted with methanol-5% aqueous SDS-phosphoric acid (990:10:1).
(19) This doxorubicin derivative did not bind to Sepharose which was conjugated with cardiac actin.
(20) In the triploids, the 40 female chromosomes present (mouse, n = 20) were derived from a single diploid pronucleus formed after the extrusion of a first polar body, and following the monospermic fertilization of primary oocytes.
Empirical
Definition:
(a.) Pertaining to, or founded upon, experiment or experience; depending upon the observation of phenomena; versed in experiments.
(a.) Depending upon experience or observation alone, without due regard to science and theory; -- said especially of medical practice, remedies, etc.; wanting in science and deep insight; as, empiric skill, remedies.
Example Sentences:
(1) The issue of the Schizophrenia Bulletin is devoted to articles representing this full range of conceptual and empirical work on first-episode psychosis.
(2) The authors empirically studied the self-medication hypothesis of drug abuse by examining drug effects and motivation for drug use in 494 hospitalized drug abusers.
(3) It is time to start over with an approach to promoting wellbeing in foreign countries that is empirical rather than ideological.
(4) In later years, the church built a business empire that included the Washington Times newspaper, the New Yorker Hotel in Manhattan, Bridgeport University in Connecticut, as well as a hotel and a car plant in North Korea.
(5) Comparisons between predicted and observed results of studies using different coalition paradigms show considerable empirical support for the model.
(6) Though the concept of phase, known also as focus, is a very helpful notion, its empirical foundation is yet very weak.
(7) This empirical fact has in recent years been increasingly dealt with in pertinent German-language literature, the discussion clearly emphasizing the demand that programmes aimed at the vocational qualification of unemployed disabled persons be provided, along with accompanying measures.
(8) The current work utilizes an empirical relationship between HbO2 saturation measurements and reflected light oximetry, which is consistent with the two-flux theory of Kubelka and Munk (Z.
(9) Energy conformational calculations on these compounds were also carried out using the empirical energy program called MOLMEC, in order to better understand how the 4-R substituents modulate receptor binding affinities and efficacies.
(10) The resultant scales were administered to a small sample for preliminary empirical testing.
(11) We conclude that the concept of the limbic system cannot be accepted on empirical grounds.
(12) Based on a large, ongoing empirical research effort to determine factors associated with the successful community adjustment of troubled adolescents leaving residential treatment, this paper focuses on multiple indicators of success measured at multiple points of time in the treatment process.
(13) Given that patient preferences constitute a central concept within the framework of HRQL, further empirical evaluation of utility measures of preference is fundamental to improving the HRQL measurement tool-kit.
(14) The discovery of this vast tranche of documents has prompted historians to suggest that a major reappraisal of the end of Britain's empire will be required once these materials have been digested – a "hidden history" if ever there were one.
(15) The similarities in methods of intervention found in the work of investigators of very different theoretical persuasion raise the possibility that most treatment methods owe more to empirical clinical experience than to their presumed derivation from a theoretical model.
(16) This study is directed toward the empirical elaboration of four of these issues as they relate to adjustment in the community.
(17) The Assyrian Empire, though it did fluctuate in strength, had gone down finally over six hundred years before this scene is set.
(18) In addition to a detailed description of the method, examples for its applications are given, including concomitant investigations of the same cells by empirical staining, immunostaining, and fluorescence histochemistry of biogenic monoamines; colocalization of multiple peptides to the same cells and corresponding specificity controls; three-dimensional reconstructions based upon immunostained serial semithin sections; quantitative (computer-assisted) determinations of immunoreactivities.
(19) The purpose of this study was to test an empirically based prediction model of school dropout on a sample of 137 juvenile delinquents, some who have dropped out and some who have remained in school.
(20) Comparison with other pinch strength studies established that although force magnitudes may be strongly influenced by specific experimental conditions, empirical relationships among different pinch forces are fairly stable and predictable.