What's the difference between derive and obtain?

Derive


Definition:

  • (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.

Obtain


Definition:

  • (v. t.) To hold; to keep; to possess.
  • (v. t.) To get hold of by effort; to gain possession of; to procure; to acquire, in any way.
  • (v. i.) To become held; to gain or have a firm footing; to be recognized or established; to subsist; to become prevalent or general; to prevail; as, the custom obtains of going to the seashore in summer.
  • (v. i.) To prevail; to succeed.

Example Sentences:

  • (1) A former Labour minister, Nicholas Brown, said the public were frightened they "were going to be spied on" and that "illegally obtained" information would find its way to the public domain.
  • (2) Sperm specimens were obtained from 13 men participating in our in vitro fertilization program.
  • (3) As a consequence, similar response curves were obtained for urine specimens containing morphine or barbiturates.
  • (4) The nuclear origin of the Ha antigen was confirmed by the speckled nuclear immunofluorescence staining pattern given by purified antibody to Ha obtained from a specific immune precipitate.
  • (5) Manometric studies with resting cells obtained by growth on each of these sulfur sources yielded net oxygen uptake for all substrates except sulfite and dithionate.
  • (6) Although measurements are easily obtained with a tape measure, the validity of these measurements is not known.
  • (7) Multiple overlapping thin 3D slab acquisition is presented as a magnitude contrast (time of flight) technique which combines advantages from multiple thin slice 2D and direct 3D volume acquisitions to obtain high-resolution cross-sectional images of vessel detail.
  • (8) Since 1987, it has become possible to obtain immature ova from the living animal and to let them mature, fertilize and develop into embryos capable of transplantation outside the body.
  • (9) Symptomatic improvement was obtained in 14 of the 15 hands, and sensory-evoked response improved in 13 hands.
  • (10) These data indicate that RNA faithfully transfers "suppressive" as well as "positive" types of immune responses that have been reported previously for lymphocytes obtained directly from tumour-bearing and tumour-immune animals.
  • (11) These observations were confirmed by the killing curves in pooled serum obtained at peak and trough levels.
  • (12) The obtained results are used to study the relation between the acoustic characteristics of these vowels and the corresponding articulatory dimensions.
  • (13) Scatchard analyses of binding data obtained with synaptosomal preparations from 17-day-old embryos revealed two T3 binding sites.
  • (14) In the present study, respirometric quotients, the ratio of oral air volume expended to total volume expended, were obtained using separate but simultaneous productions of oral and nasal airflow.
  • (15) Maximal yields of lipid and aflatoxin were obtained with 30% glucose, whereas mold growth, expressed as dry weight, was maximal when the medium contained 10% glucose.
  • (16) Flow cytometric DNA analysis was performed on both fresh and on paraffin embedded samples obtained by gastroscopic biopsies in 5 patients with histologically normal gastric mucosa (20 specimens) and by radical gastrectomies in 9 cases of human gastric cancer (36 specimens).
  • (17) In experiments performed to determine whether PtdIns(4,5)P2 hydrolysis induced by TRH may have been caused by the elevation of [Ca2+]i, the following results were obtained: the effect of TRH to decrease the level of PtdIns(4,5)P2 was not reproduced by the calcium ionophore A23187 or by membrane depolarization with 50 mM K+; the calcium antagonist TMB-8 did not inhibit the TRH-induced decrease in PtdIns(4,5)P2; and, most importantly, inhibition by EGTA of the elevation of [Ca2+]i did not inhibit the TRH-induced decrease in PtdIns(4,5)P2.
  • (18) Variables included an ego-delay measure obtained from temporal estimations, perceptions of temporal dominance and relatedness obtained from Cottle's Circles Test, Ss' ages, and a measure of long-term posthospital adjustment.
  • (19) Data obtained with fenoldopam were corroborated with use of SK&F 38393, another dopamine D1-receptor agonist.
  • (20) Bipolar derivations with the maximum PSE always included the locations with the maximum PSE obtained from a linked ears reference.