What's the difference between null and purpose?

Null


Definition:

  • (a.) Of no legal or binding force or validity; of no efficacy; invalid; void; nugatory; useless.
  • (n.) Something that has no force or meaning.
  • (n.) That which has no value; a cipher; zero.
  • (v. t.) To annul.
  • (n.) One of the beads in nulled work.

Example Sentences:

  • (1) Measurements of acetylcholine-induced single-channel conductance and null potentials at the amphibian motor end-plate in solutions containing Na, K, Li and Cs ions (Gage & Van Helden, 1979; J. Physiol.
  • (2) DR(+) cells, however, showed no change in percentage and a lesser drop in absolute numbers, suggesting an increase with advancing disease of DR(+), Ig(-) null cells, which may represent immature B cell precursors.
  • (3) In this report we describe an improvement upon the design by Stanton and Lightfoot for a simple photographic null method to determine the kVp of a diagnostic region x-ray source.
  • (4) At least two (Rh null and the McLeod type) are responsible for congenital hemolytic disorders.
  • (5) (2) Sequences of brightness steps of like polarity (either increments or decrements) elicit positive and negative motion-dependent response components when mimicking motion in the cell's preferred and null direction, respectively.
  • (6) The analysis also involved statistical tests of a modified null hypothesis, the generation of confidence intervals (CIs) and a meta-analysis.
  • (7) The null potential of both responses became more and less negative with a decrease and an increase, respectively, in the extracellular potassium concentration.
  • (8) The null mutation of algR was generated in a mucoid derivative of the standard genetic strain PAO responsive to different environmental factors.
  • (9) Endoneurial fluid pressure (EFP) was recorded by an active, servo-null pressure system after a glass micropipette was inserted into rat sciatic nerve undergoing wallerian degeneration.
  • (10) In thymo-deprived mice (nude mice and B mice) the percentage of null cells increases during the stage of regeneration, and B mice develop a large number of Ig +-bearing cells.
  • (11) Alkaline phosphatase activity was elevated in the lymphocytes from T-CLL, cord blood and tonsils and the blast cells from Null-ALL.
  • (12) Analysis of ldlA cells has identified three classes of mutant alleles at the ldlA locus: null alleles, alleles that code for normally processed receptors that cannot bind LDL, and alleles that code for abnormally processed receptors.
  • (13) Putative null sup-38 mutations cause maternal-effect lethality which is rescued by a wild-type copy of the locus in the zygote.
  • (14) Null cells of patients with hypoplastic anemia did not produce erythroid colonies under any culture conditions.
  • (15) Comparison of simulated versus actual inheritance data demonstrates that the so-called null structural alleles actually produce functional globins.--The genetic controls in Peromyscus may be analogous to those in primates.
  • (16) A null zone and associated sudden phase-reversal of RSA were observed in stratum lucidum of CA3.
  • (17) When the stimulus is placed at a position approximately 80 degrees dorsal to the eye axis, there is no response; this area is called the null region.
  • (18) Northern blot analysis showed that Adh-1 mRNA was synthesized at wild-type levels in immature seeds of the null mutant, but dropped to 25% in mature seeds.
  • (19) Two tumours were null cell adenomas with PIs less than 0.1 and 0.2%.
  • (20) Thus this methodology offers the potential to study naturally occurring ADH electromorphs and null alleles independent of enzymatic activity assays.

Purpose


Definition:

  • (n.) That which a person sets before himself as an object to be reached or accomplished; the end or aim to which the view is directed in any plan, measure, or exertion; view; aim; design; intention; plan.
  • (n.) Proposal to another; discourse.
  • (n.) Instance; example.
  • (v. t.) To set forth; to bring forward.
  • (v. t.) To propose, as an aim, to one's self; to determine upon, as some end or object to be accomplished; to intend; to design; to resolve; -- often followed by an infinitive or dependent clause.
  • (v. i.) To have a purpose or intention; to discourse.

Example Sentences:

  • (1) If the method was taken into routine use in a diagnostic laboratory, the persistence of reverse passive haemagglutination reactions would enable grouping results to be checked for quality control purposes.
  • (2) The purpose of these studies was to better understand the molecular basis of chromosome aberration formation after mitomycin C treatment.
  • (3) The purpose of the present study was to report on remaining teeth and periodontal conditions in a population of 200 adolescent and adult Vietnamese refugees.
  • (4) It was the purpose of the present study to describe the normal pattern of the growth sites of the nasal septum according to age and sex by histological and microradiographical examination of human autopsy material.
  • (5) The purpose of this paper is to discuss the potential for integrating surveillance techniques in reproductive epidemiology with geographic information system technology in order to identify populations at risk around hazardous waste sites.
  • (6) These patients had undergone selective and bilateral simultaneous IPS sampling for diagnostic purposes or for neurosurgical indications.
  • (7) The purpose of the present study was to analyze the effects of cromakalim (BRL 34915), a potent drug from a new class of drugs characterized as "K+ channel openers", on the electrical activity of human skeletal muscle.
  • (8) The committee reviewed the history, original intent, current purpose, and effectiveness of meetings held on the unit; when problems were identified, suggestions for change were formulated.
  • (9) Current status of prognosis in clinical, experimental and prophylactic medicine is delineated with formulation of the purposes and feasibility of therapeutic and preventive realization of the disease onset and run prediction.
  • (10) For this purpose a test consisting of 135 picture cards was devised.
  • (11) For this purpose the blood flow velocity in the internal carotid artery, basilar cerebral artery and the anterior cerebral artery was measured by pulsed Dopplersonography before and 5-10 min after i.v.
  • (12) The purpose of our study was to determine the effect of HVPC on edema formation in frogs.
  • (13) The purpose of this study was to determine the effect of pretreatment with indomethacin on the refractory period to hypertonic saline-induced bronchoconstriction.
  • (14) What constitutes a "mental disorder" for purposes of the insanity defense?
  • (15) It delimitates the restrictive conditions in which such methods could be used for clinical but not research purposes.
  • (16) Benzyloxycarbonylarginine p-nitrophenyl ester and other activated esters of N-a-sustituted arginine salts may be useful reagents for introduction of trypsin-labile protecting groups into peptide fragments for purpose of polypeptide semi-synthesis.
  • (17) The purposes of this study were to assess the career development needs of entering medical students as measured by the Medical Career Development Inventory and to examine gender differences in responses to the inventory.
  • (18) For this purpose, five queries may contribute to programming the most suitable surgery.
  • (19) The purpose of the present study was to investigate whether the signaling behaviors of female Long-Evans rats varies over the estrous cycle.
  • (20) The purposes of this study were to locate games and simulations available for nursing education, to categorize these materials to make them more accessible for nurse educators, and to determine how nursing's use of instructional games might be enhanced.