What's the difference between null and pupil?

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.

Pupil


Definition:

  • (n.) The aperture in the iris; the sight, apple, or black of the eye. See the Note under Eye, and Iris.
  • (n.) A youth or scholar of either sex under the care of an instructor or tutor.
  • (n.) A person under a guardian; a ward.
  • (n.) A boy or a girl under the age of puberty, that is, under fourteen if a male, and under twelve if a female.

Example Sentences:

  • (1) A 66-year-old woman with acute idiopathic polyneuritis (Landry-Guillain-Barré [LGB] syndrome) had normal extraocular movements, but her pupils did not react to light or accommodation.
  • (2) Results in May 89 emphasizes: the relevance and urgency of the prevention of AIDS in secondary schools; the importance of the institutional aspect for the continuity of the project; the involvement of the pupils and the trainers for the processus; the feasibility of an intervention using only local resources.
  • (3) We’ve spoken to them on the phone and they’ve all said they just want to come home.” A total of 93 pupils from Saint-Joseph were on the trip.
  • (4) Pupils who disrupt the learning of their classmates are dealt with firmly and, in many cases, a short suspension is an effective way of nipping bad behaviour in the bud."
  • (5) The headteacher of the school featured in the reality television series Educating Essex has described using his own money to buy a winter coat for a boy whose parents could not afford one, in a symptom of an escalating economic crisis that has seen the number of pupils in the area taking home food parcels triple in a year.
  • (6) The pupils at the Royal Blind School, Edinburgh, were surveyed and it was found that 40% of the 100 pupils had definitely inherited severe eye disease.
  • (7) The teacher said his school believed it was aware of all the pupils who had been present, and that Nuttall was not among them.
  • (8) While tonic pupil and reduced sweating can be attributed to the affection of postganglionic cholinergic parasympathetic and sympathetic fibres projecting to the iris and sweat glands, respectively, the pathogenesis of diminished or lost tendon jerks remains obscure.
  • (9) For data sampled at a high rate (approximately 200 Hz) pupil velocity deviations from zero can simply be used, giving a satisfactory inaccuracy of about 5 ms. For data sampled at a low rate (less than 50 Hz), e.g.
  • (10) On neurological examination, he showed stupor,pupils and eye position were normal.
  • (11) A nine-year-old Scottish girl who attracted two million readers to a blog documenting her school lunches , consisting of unappealing and unhealthy dishes served up to pupils, has been forced to end the project after the council banned her from taking pictures of the food in school.
  • (12) Posterior synechiae, pupil deformations, grave uveitis with hypotonia of 4-10 mm Hg are rapidly developing.
  • (13) Effects of topical administration of a single dose of 2% pilocarpine on intraocular pressure (IOP) and pupil diameter were evaluated in normotensive eyes of 10 clinically normal cats over 12 hours.
  • (14) Changes in pupil size indicated a substantial cholinergic effect on the iridal sphincter musculature.
  • (15) The nineteen pupils so discovered had more exercise-induced bronchial lability than equivalently exercised controls.
  • (16) Theory and practice of urology generates three types of professionals: doctors, who study at universities and obtain their licence by making a demonstration before the Protomedicato Tribunal; surgeons, who acquire their surgical techniques through a teacher-pupil training relationship outside universities; and empirics, who were in charge of performing surgical operations.
  • (17) The evolution and characteristics of diabetic rubeosis were studied in 33 eyes, and the following vascular abnormalities were found: (1) Dilated leaking capillaries around the pupil; (2) irregular or slow filling of the radial arteries; (3) superficial arborising newly formed vessels, usually starting in the chamber angle; and (4) dilatation and leakage of the radial vessels either before or after the development of neovascular glaucoma.
  • (18) Characteristic clinical features were present in 19 patients, including a gradual obtundation after the initial hemorrhage in 16 patients and small nonreactive pupils in nine patients (all with a Glasgow Coma Scale score of 7 or less).
  • (19) Ed Miliband's education package is less generous than some hoped Read more The Labour leader said the coalition is directly to blame for a trebling in the number of classes with more than 30 pupils from 31,265 in 2010 to 93,345 in 2014, as a result of opening free schools in areas where new schools are not needed.
  • (20) Of these, 61.2% said they had been subjected to a pupil writing an insulting comment about them on a social network or internet site, 38.1% said a student had made comments about their competence or performance as a teacher, and 9.1% said they had faced allegations that they behaved inappropriately with pupils.