(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.
Woodpecker
Definition:
(n.) Any one of numerous species of scansorial birds belonging to Picus and many allied genera of the family Picidae.
Example Sentences:
(1) A blackbird is broadcasting its mellifluous song, a squirrel runs up a nearby tree and surprisingly, given that we are in central London, we can both hear a woodpecker knocking.
(2) The only sound is the astonishing cackle of a green woodpecker.
(3) You will see woodpeckers and treecreepers, and all the flora you would expect.
(4) Cystacanths later recovered from the woodroaches developed into mature worms when pipetted into esophaguses of red-bellied woodpeckers, Centurus carolinius: red-headed woodpeckers, Melanerpes erythrocephalus; yellow-shafted flickers, Colaptes auratus; and a hairy woodpecker, Dendrocopos villosus.
(5) Furthermore, all these impacts could occur simultaneously, posing a particularly devastating threat to already vulnerable species and systems.” They note the endangered red-cockaded woodpecker as an example; it lives in longleaf pine forests, which will likely be among the forest casualties in this new urban wasteland.
(6) Ceca are absent in woodpeckers, hummingbirds, swifts, kingfishers, pigeons, mousebirds, cuckoos, and parrots.
(7) From Tring station there's a four- or a six-mile circular route through an area with lots of wildlife including red kites, goldcrests, lesser spotted woodpeckers and wild fallow deer.
(8) One woodpecker finch, Cactospiza pallida, was found to be infected with I. exigua, and a warbler finch, Certhidea olivacea was infected with I. fragmenta.
(9) Luddenden Brook runs through it, there are shaded walks criss crossing throughout, rare plants, woodpeckers and deer - and you can camp very cheaply at the council-run Jerusalem Farm on the edge of the woods.
(10) Phosalone had little effect on brain ChE activity of birds from treated groves; only slight to moderate (21 to 38%) ChE inhibition was detected in blue jays (Cyanocitta cristata) and red-bellied woodpeckers (Melanerpes carolinus).
(11) As a contrast, it depleted 60-80% of both NE and E from the innervated glands as compared to 17-43% reduction from the denervated glands in nonpasserine (woodpecker, parakeet, and koel) birds.
(12) Cystacanths fed starlings, Sturnus vaulgaris, and red-winged blackbirds, Agelaius phoeniceus, did not produce infections although cystacanths from the same pool were infective to control woodpeckers.
(13) Infection was achieved in all woodpeckers fed cystacanths at least 47 days old and the mean prepatent period was 35 days.
(14) We determined the prevalence of six genera of bacteria from a sample of 387 cloacal swabs from 364 passerines and woodpeckers.
(15) This brought on an unprecedented wave of extinctions or near misses; the Carolina parakeet and the Rocky Mountain locust were driven to extinction and the Pronghorn antelope, the bison, black-footed ferret, Eskimo curlew, ivory-billed woodpecker, heath hen and others were brought to the brink.
(16) A preliminary anatomical study of the woodpecker's head suggests that it may be fruitful to explore impact protective systems which are radically different from those in common use.
(17) Which is exactly what we did on her last day, watching woodpeckers in the copse in front of her cottage, and remembering our adventures together; up to an hour before she died, we were planning a new one, and she was excited that it might include a recce to the Arctic Circle to view the aurora borealis .
(18) Filled with long-tailed tits or goldfinches or cackling green woodpeckers, many are as thick as houses, a coalition of holly, rowan, hazel, dogwood and bramble, with oaks permitted to grow into grand trees.
(19) My mother made a new cover for our battered sofa from his Woodpecker fabric and my sisters wore smock-like dresses made from his textiles.
(20) The woodpecker is an experiment in Nature, a model for the investigation of mechanisms of basic importance for head injury and its prevention.