What's the difference between null and pearl?

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.

Pearl


Definition:

  • (n.) A fringe or border.
  • (v. t. ) To fringe; to border.
  • (n.) A shelly concretion, usually rounded, and having a brilliant luster, with varying tints, found in the mantle, or between the mantle and shell, of certain bivalve mollusks, especially in the pearl oysters and river mussels, and sometimes in certain univalves. It is usually due to a secretion of shelly substance around some irritating foreign particle. Its substance is the same as nacre, or mother-of-pearl. Pearls which are round, or nearly round, and of fine luster, are highly esteemed as jewels, and compare in value with the precious stones.
  • (n.) Hence, figuratively, something resembling a pearl; something very precious.
  • (n.) Nacre, or mother-of-pearl.
  • (n.) A fish allied to the turbot; the brill.
  • (n.) A light-colored tern.
  • (n.) One of the circle of tubercles which form the bur on a deer's antler.
  • (n.) A whitish speck or film on the eye.
  • (n.) A capsule of gelatin or similar substance containing some liquid for medicinal application, as ether.
  • (n.) A size of type, between agate and diamond.
  • (a.) Of or pertaining to pearl or pearls; made of pearls, or of mother-of-pearl.
  • (v. t.) To set or adorn with pearls, or with mother-of-pearl. Used also figuratively.
  • (v. t.) To cause to resemble pearls; to make into small round grains; as, to pearl barley.
  • (v. i.) To resemble pearl or pearls.
  • (v. i.) To give or hunt for pearls; as, to go pearling.

Example Sentences:

  • (1) Based on their localisation and histology these are classified into three types (Epstein's pearls, Bohn's nodules, Dental lamina cysts).
  • (2) Pregnancy occurred in 14 women corresponding to a Pearl-index of 55.6.
  • (3) Bloody odd combination but those Orange Foam Headphones would blast those magnificent records into my developing brain over and over again" chernypyos – Björk's Human Behavior and Sinead O'Connor's Fire On Babylon: "bjork's 'human behavior' and sinead o'connor's "fire on babylon" oddly stick in my head from that one evening walking in the woods, breathing the damp air, and feeling pleasantly invisible" Pyromancer – REM – Automatic for the People Blood Sugar Sex Magic Pearl Jam - Vs RATM's first album Portishead Maxinquaye by Tricky Manic Street Preachers – Gold Against the Soul Smashing Pumpkins, Siamese Dream "I used to go to the local library and take out a CD (50p for 3 weeks!
  • (4) Further south is Ghadames, one of the most ancient settlements in north Africa , which Unesco calls “the pearl of the desert”.
  • (5) Whereas a simple tympanoplasty could cure a localized pearl, typically anterosuperior in the mesotympanum, the stapes is fast eroded (7 cases) if progression goes on.
  • (6) The pregnancy rate after 5 years was 3.2 or a Pearl index of 1.21 which is very good compared to other methods of contraception now available.
  • (7) Our plan is to have 200 Pearl accredited homes by the end of 2016 to help meet the UK's growing need for specialist dementia care centres with specially trained staff.
  • (8) We now have 67 Pearl accredited homes with a further 70 working through the pathway to achieve accreditation.
  • (9) It was established that density of one-generation concrements resembling pearl granules was far greater as compared to that of the other varieties of cholesterol concrements.
  • (10) use efficacy may be calculated in 2 ways: the Pearl Index (the failure rate expressed as the number of pregnancies divided by the number of months of exposure and multiplied by 1200) and the cumulative life table method.
  • (11) Brush the buns with the egg and sprinkle with pearl sugar.
  • (12) It has a Pearl index of 2.9 and must be replaced yearly.
  • (13) PEARL can also serve as a tool in basic research on human psychophysiology.
  • (14) The packing of crystals seemed to be less tight in pearl enamel.
  • (15) Confectionery levels ranged between 0.26 and 7.9 mg g-1, whilst contents in health products were 0.30-47.1 mg g-1, the highest values being measured for throat pearls.
  • (16) Twenty-four wethers had ad libitum access to a total forage diet (pearl millet forage), water and trace mineralized salt.
  • (17) Compared with Progestasert, LNG Nova-T showed lower pregnancy rates (Pearl Index 0.30), less risk for ectopic pregnancy, and a longer effective lifetime (7 years).
  • (18) The physical parameters tested were: test weight (TW), endosperm texture (TE), pearling index (IP), 1000 kernel wt (W 1000), infrared reflectance (NIR) and color (Ref).
  • (19) Shenzhen , the country’s first SEZ, which opened in 1980, currently harbours 300,000 migrant workers, while Pearl River Delta Economic Zone is home to 42 million people.
  • (20) In the mid-1990s, when the movement's influence on HTB was at its height, I visited a Chelsea church run by Nicky Lee, one of the men who converted Welby at Cambridge, and when the Holy Spirit started knocking people down, I'd hear the distinct rattle of pearls when the young women fainted to the floor.