What's the difference between null and quack?

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.

Quack


Definition:

  • (v. i.) To utter a sound like the cry of a duck.
  • (v. i.) To make vain and loud pretensions; to boast.
  • (v. i.) To act the part of a quack, or pretender.
  • (n.) The cry of the duck, or a sound in imitation of it; a hoarse, quacking noise.
  • (n.) A boastful pretender to medical skill; an empiric; an ignorant practitioner.
  • (n.) Hence, one who boastfully pretends to skill or knowledge of any kind not possessed; a charlatan.
  • (a.) Pertaining to or characterized by, boasting and pretension; used by quacks; pretending to cure diseases; as, a quack medicine; a quack doctor.

Example Sentences:

  • (1) The agency has worked with other authorities to move against quack AIDS products and to educate the public concerning this health fraud.FDA hopes that through all these efforts it can help researchers in government, academia, and industry advance the development, testing, and review of safe and effective therapies, preventatives,and diagnostics for AIDS and related conditions.
  • (2) The FPC has neither, so it risks just going quack- quack on a murky pond," he said.
  • (3) Never mind that it muddies the debate (the Le Pen dynasty and the millionaire Nigel Farage somehow turn out to be the real victims in all this) and trivialises the very people to whom the quack is pretending to genuflect.
  • (4) A collection of poems by his widow Karen Green, entitled Bough Down, won praise earlier this year , and Quack This Way , a tribute from his friend Bryan A Garner was published this month.
  • (5) Their ruling will help young people Duncan Smith's department had pushed into quack schemes on pain of losing their benefit.
  • (6) No politician can keep a promise to bring back jobs – especially not Donald Trump Read more Like all good quack analysis, it is instantly digestible, it makes little demands of its audience: no scouring of footnotes nor leafing through history.
  • (7) Brome, western wheat, and quack grasses demonstrated RAST inhibition patterns similar to the northern grasses.
  • (8) Mega-projects have become the quack remedies of modern politics.
  • (9) But it isn't only quack journals that have failures in peer review.
  • (10) We are taught to bark like dogs, quack like ducks around the same time we are learning the words for mummy and daddy.
  • (11) The policy quacks urge us to breezeblock the greenbelt.
  • (12) These objects include radium in devices which were used by legitimate medical practitioners for legitimate medical purposes such as therapy, as well as a wide variety of "quack cures."
  • (13) It was a quick political fix, a quack’s remedy that seemed to deal with the symptoms in the short term when it was really just aggravating the causes.
  • (14) If this is not double-dip recession it is certainly starting to walk, talk and quack like one.
  • (15) State media alleged that in pursuit of profits, Baidu had allowed its online health forums to become “flooded with quacks and advertisements for unlicensed hospitals”.
  • (16) Cue Baxter’s own recollection of her angst about the jab, which concluded with the claim that some parents were “being used by a quack and a fraud”.
  • (17) The structure of sinistrin from red squill (Urginea maritima) was determined by methylation analysis and 13C NMR spectroscopy, using the fructans from Pucinella peisonis and quack-grass (Agropyron repens) as reference substances.
  • (18) George Orwell berated them as "fruit juice drinkers, nudists, sex maniacs, Quakers, nature-cure quacks, pacifists and feminists", while others have, outrageously, labelled them Guardian writers and readers.
  • (19) For Robert De Niro to use the platform of his internationally known film festival to lend credibility to a quack peddling toxic misinformation about autism is, among other things, a flagrant abuse of power and privilege – yes, white power and privilege.
  • (20) He doesn’t look particularly comfortable, writes resident Guardian quack Dr Murray, who has no clue whatsoever if he’s being honest.