What's the difference between null and rear?

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.

Rear


Definition:

  • (adv.) Early; soon.
  • (n.) The back or hindmost part; that which is behind, or last in order; -- opposed to front.
  • (n.) Specifically, the part of an army or fleet which comes last, or is stationed behind the rest.
  • (a.) Being behind, or in the hindmost part; hindmost; as, the rear rank of a company.
  • (v. t.) To place in the rear; to secure the rear of.
  • (v. t.) To raise; to lift up; to cause to rise, become erect, etc.; to elevate; as, to rear a monolith.
  • (v. t.) To erect by building; to set up; to construct; as, to rear defenses or houses; to rear one government on the ruins of another.
  • (v. t.) To lift and take up.
  • (v. t.) To bring up to maturity, as young; to educate; to instruct; to foster; as, to rear offspring.
  • (v. t.) To breed and raise; as, to rear cattle.
  • (v. t.) To rouse; to stir up.
  • (v. i.) To rise up on the hind legs, as a horse; to become erect.

Example Sentences:

  • (1) The first group was reared in complete darkness while the second one was subjected to permanent noise.
  • (2) Laboratory-reared Ixodes scapularis Say, Amblyomma americanum (L.), and Dermacentor variabilis (Say) were fed on New Zealand white rabbits experimentally infected with Borrelia burgdorferi (JDI strain).
  • (3) Heavy death losses (59%) occurred in adult Mystromys 3--14 days after muscle biopsies were taken from their rear legs.
  • (4) Maternal age had a significant effect (P less than .05) on live body weights of broilers reared either separately or intermingled.
  • (5) Slight but significant shortening of the latency of initial positivity in the evoked potential was observed after rearing in the enriched condition as compared to the data obtained from the littermates that were reared in the standard or impoverished conditions.
  • (6) Here we show that the subsequent survival and reproductive success of subordinate female red deer is depressed more by rearing sons than by rearing daughters, whereas the subsequent fitness of dominant females is unaffected by the sex of their present offspring.
  • (7) Infected ticks were reared from larvae feeding on each of 11 rabbits taken from the same site.
  • (8) But in each party there are major issues to be dealt with as the primary phase of the contests slips gradually into the rear-view mirror.
  • (9) The external and internal rear-view mirrors of automobiles should be positioned within the binocular field of vision.
  • (10) This time, the syndrome was observed on adult cattle reared in the Accra Plains (Ghana) and infected by S. typhimurium.
  • (11) Serum somatomedin A was significantly reduced in the growth-retarded rats as compared to those whose growth was enhanced by rearing in small litters.
  • (12) This measure was significantly greater by 17.2% in chicks trained for 140 min than in dark-reared controls.
  • (13) It was caused at the frequency close to 100% in dysgenic offsprings reared above 25 degrees C, of which gonads were morphologically clearly different from those of usual GD sterility, whereas there was no indication of GD-3 sterility at temperatures below 24 degrees C. Temperature sensitive period of GD-3 sterility was estimated to the prepupal stage by shift-down experiment.
  • (14) a 45-mg pellet every 45 s) induces considerable locomotion, rearing and other motor activities in food-deprived rats.
  • (15) In contrast, when hamsters reared under LD conditions at 25 degrees C for 12 weeks were transferred to SD, testicular regression was associated with a decrease in plasma testosterone and the total LH binding per two testes and an increase in LH binding per unit testicular weight.
  • (16) Nevertheless, there are farms on which satisfactory results are obtained in rearing calves with low Ig levels.
  • (17) Littermate pigs were reared artificially or on the sow.
  • (18) There were no significant differences in the adrenal weights of males or females, but females reared by bisexual pairs had larger absolute and relative adrenals than females reared in populations.
  • (19) sp., described from wild-caught and laboratory-reared females, males, nymphs, and larvae parasitizing the Humboldt Penguin, Spheniscus humboldti Meyen, is the fifth species of the Ornithodoros (Alectorobius) capensis group to be recognized in the Neotropical Region.
  • (20) In cats that viewed lines of the same orientation with both eyes during rearing, a substantially smaller proportion of units were selective for orientation; the preferred orientations of these units also tended to match the orientation to which the cats had been exposed.