What's the difference between null and pert?

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.

Pert


Definition:

  • (a.) Open; evident; apert.
  • (a.) Lively; brisk; sprightly; smart.
  • (a.) Indecorously free, or presuming; saucy; bold; impertinent.
  • (v. i.) To behave with pertness.

Example Sentences:

  • (1) To date we have analysed members of 28 DMD families (10 familial, 18 sporadic) and six BMD families (four familial, two sporadic) with the closely linked pERT probes 87-1, 87-8, and 87-15 (DXS164).
  • (2) The Electrodyn sprayer was compared with a compression sprayer (Hudson X-pert) for residual application of cypermethrin, a pyrethroid insecticide, to control the malaria vectors Anopheles arabiensis Patton and An.
  • (3) Analysis of cloned segments of X chromosome DNA from the patient and her son showed the XmnI(Asp) alleles of pERT 87-15 and the TaqI alleles of pERT 87-8 in both patients.
  • (4) Most of the PERT clones were mapped to human chromosome (chr) 2p23-2pter, where the N-myc gene is located.
  • (5) Richard Beckinsale was Geoffrey, Paula Wilcox was Beryl, pretty, pert and given the best lines: "Beryl, we live in a permissive society."
  • (6) Whaanga said: "My scars are not ugly, they mean I'm alive" – and to me they're much more impressive than a perfect, pert cleavage.
  • (7) The air pulsed automatic tonometer X-PERT NCT has been tested in hospitals on glaucomatous patients.
  • (8) Determining the minimum time (to), the maximum one (tp) and the more frequent time (tm) of each activity and applying the statistic method PERT, one gets the probable duration (te) of every activity and the critical path of the net is placed in evidence.
  • (9) Probe pERT-84 maps to the same fragment, within 750 kb of XJ1.1.
  • (10) RFLP analysis revealed that the affected male and an unaffected sister shared a complete Xp21 haplotype while the affected sister had inherited a recombinant Xp21 region resulting from a crossover between pERT 87-15 and J-Bir.
  • (11) L. M. Kunkel and his colleagues isolated genomic sequences (PERT 87) from within a large deletion causing DMD, whereas our group isolated genomic sequences (XJ) spanning the junction of an X-autosome translocation causing the disease.
  • (12) The insertion is demonstrated by field-inversion gel electrophoresis as an enlarged SfiI fragment hybridizing to probe J-Bir, while neighboring SfiI fragments (detected by probes PERT 87 and J-66) are unchanged.
  • (13) The recombinant DNA study showed a recombinant chromosome with a crossover between pERT 87-8 and pERT J-Bir in the manifesting carrier.
  • (14) On my first day at primary school, my teacher, Mr Smith, said in front of the class, “What kind of person calls their child Roo-pert?” Put me off school for ever.
  • (15) Photograph: Charlotte Pert The government then offered $5,000 to each family, but has been accused of dragging its heels over the payments.
  • (16) Denise has a small, trim nose; more decorous than pert.
  • (17) Residual effect and cost-benefit were evaluated and compared to the standard DDT spraying technique using the Hudson X-pert sprayer.
  • (18) Gluttony was, as Francine Prose (author of a pert monograph, Gluttony ) puts it, all about the "inordinate desire" for food, which makes us "depart from the path of reason".
  • (19) By applying over 100 fold excessive CTX and liver single strand cDNA to the CB double strand cDNA, subtractive hybridization was carried out by phenol-emulsion-reassociation-technique (PERT), in which the common expressed housekeep genes would be eluted by restrict site ligation, and CB specific cDNA flanking with EcoRI site in both ds cDNA ends could be cloned into lamda gill phage.
  • (20) The use of PERT as a standardized process for the placement of patients in community facilities is illustrated and advocated by the authors.

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