(a.) Opposite to the northern or arctic pole; relating to the southern pole or to the region near it, and applied especially to a circle, distant from the pole 23ยก 28/. Thus we say the antarctic pole, circle, ocean, region, current, etc.
Example Sentences:
(1) He then went on to contradict the claims made by Attenborough in his own Radio Times article by stating that the polar bear population is, in fact, rising, Antarctic sea ice is expanding, and there was "no global warming at all" in the last quarter of the 20th century.
(2) Measurements of serum freezing points in three Antarctic marine fishes indicated that they do not freeze in the -1.87 degrees C seawater because their blood is isosmotic to seawater.
(3) Maximum power output for the fast muscle fibres from the Antarctic species at -1 degree C is around 60% of that of the tropical fish at 20 degrees C. Evolutionary temperature compensation of muscle power output appears largely to involve differences in the ability of cross bridges to generate force.
(4) The virus used was apparently partly attenuated for man; at the dosage used its effects in England were similar to a smaller dose of an unattenuated strain, but in the Antarctic it caused relatively severe infections.
(5) If coastal ice shelves buttressing the west Antarctic ice sheet continue to disintegrate, the sheet could disgorge into the ocean, raising sea levels by several metres in a century.
(6) Despite Antarctica's simultaneous warming and cooling phenomena, the second lowest temperatures ever measured on Earth was recorded in July at Dome Argus in the centre of the Antarctic plateau.
(7) The complete amino acid sequence of the single hemoglobin of the Antarctic teleost Gymnodraco acuticeps has been determined.
(8) Japan has recalled its whaling fleet from the Antarctic following confrontations with activists from the Sea Shepherd marine conservation group, the government has said, in a move that has raised hopes that the hunts will be halted altogether.
(9) But Rapley, a leading climate scientist who was previously head of the British Antarctic Survey in Cambridge, confessed that current progress on climate change is slow.
(10) The Nasa researchers focused on melting over the last 20 years, while the scientists at the University of Washington used computer modelling to look into the future of the western Antarctic ice sheet.
(11) Serum total and free T4 levels fell slightly but not significantly after very prolonged Antarctic residence.
(12) It was shown that the chemical composition of the canned food "Natural Antarctic Krill Meat" is similar to that of the canned food manufactured from crabs.
(13) The ministry accused London of infringing the spirit of the Antarctic treaty, signed in 1959 in Washington DC by 50 nations including Britain and Argentina to preserve the Antarctic from territorial disputes by guaranteeing freedom of scientific investigation and banning military activity on the continent.
(14) "During this period when temperatures were 2-3C above pre-industrial levels, global sea level looks like it was very likely at least 6.6m higher than today, which implies significant melting of the Greenland and west Antarctic ice sheets."
(15) Circadian rhythms of plasma cortisol, aldosterone and testosterone levels were studied longitudinally in a member of the 21st Japanese Antarctic Research Expedition during periods of one year both in Antarctica and in Hokkaido, Japan.
(16) Indeed, lavish media approval of a scheme so fabulously harebrained as Fiennes's can't but suggest continued respect for a version of masculinity that will always reject domesticity and grandmothers in favour of all-male challenges in the Antarctic, or at the golf club, or, failing that, at the House of Commons.
(17) In the present study, 10 soil samples were collected aseptically from an equal number of areas of the Antarctic in the zone occupied by the 1986-1987 Italian expedition for research on keratinophilic fungi.
(18) A huge ice shelf in the Antarctic is in the last stages of collapse and could break up within days in the latest sign of how global warming is thought to be changing the face of the planet.
(19) To determine whether some of these adaptations may be present in a domain of tubulin that participates directly or indirectly in lateral contact between microtubule protofilaments, we have examined the energetics of the binding of colchicine, a drug thought to bind to such a site, to pure brain tubulins from an Antarctic fish (Notothenia gibberifrons) and from a mammal (the cow, Bos taurus).
(20) Thirteen men wintering on an Antarctic base were isolated from other human contact for 10 months.
Polar
Definition:
(a.) Of or pertaining to one of the poles of the earth, or of a sphere; situated near, or proceeding from, one of the poles; as, polar regions; polar seas; polar winds.
(a.) Of or pertaining to the magnetic pole, or to the point to which the magnetic needle is directed.
(a.) Pertaining to, reckoned from, or having a common radiating point; as, polar coordinates.
(n.) The right line drawn through the two points of contact of the two tangents drawn from a given point to a given conic section. The given point is called the pole of the line. If the given point lies within the curve so that the two tangents become imaginary, there is still a real polar line which does not meet the curve, but which possesses other properties of the polar. Thus the focus and directrix are pole and polar. There are also poles and polar curves to curves of higher degree than the second, and poles and polar planes to surfaces of the second degree.
Example Sentences:
(1) Using monoclonal antibodies directed against the plasma membrane of Madin-Darby canine kidney (MDCK) cells, we demonstrated previously that a glycoprotein with an Mr = 23,000 (gp23) had a non-polarized cell surface distribution and was observed on both the apical and basolateral membranes (Ojakian, G. K., Romain, R. E., and Herz, R. E. (1987) Am.
(2) It was found that linear extrapolations of log k' versus ET(30) plots to the polarity of unmodified aqueous mobile phase gave a more reliable value of log k'w than linear regressions of log k' versus volume percent.
(3) The dependence of fluorescence polarization of stained nerve fibres on the angle between the fibre axis and electrical vector of exciting light (azimuth characteristics) has been considered.
(4) A triphasic pattern was evident for the neck moments including a small phase which represented a seating of the headform on the nodding blocks of the uppermost ATD neck segment, and two larger phases of opposite polarity which represented the motion of the head relative to the trunk during the first 350 ms after impact.
(5) The remainder of the radioactivity appeared chromatographically just prior to the bisantrene peak, indicating that compounds more polar than the parent were present as transformation products.
(6) In the triploids, the 40 female chromosomes present (mouse, n = 20) were derived from a single diploid pronucleus formed after the extrusion of a first polar body, and following the monospermic fertilization of primary oocytes.
(7) Genetic regulation of the ilvGMEDA cluster involves attenuation, internal promoters, internal Rho-dependent termination sites, a site of polarity in the ilvG pseudogene of the wild-type organism, and autoregulation by the ilvA gene product, the biosynthetic L-threonine deaminase.
(8) These transcriptional experiments provide in vitro confirmation for the latent rho-dependent termination site model of transcriptional polarity.
(9) I evaluated use of the fluorescence polarization technique to measure neocarzinostatin, a proteinaceous antitumor antibiotic, and its antibody, in serum.
(10) During photoirradiation, both in vivo and in vitro, the serum polar (ZE)-bilirubin IX alpha concentration increased remarkably, but unbound-bilirubin values were not affected at all.
(11) Actin is present in chromosomal spindle fibres, with consistent polarity.
(12) The results are summarized in Table I, indicating that the ratio of formation of the cis product (2) increases as a solvent becomes more polar.
(13) No disorganization of the muscle structure was detected by polarized light and electron microscopic inspection.
(14) Subsequently, due to the rotation of the original polar axis in one hemisphere, the third cleavage plane through one half of the egg is transverse to the third cleavage plane through the other half.
(15) These activities define both the polarity of the anterior-posterior (AP) axis and the spatial domains of expression of the zygotic gap genes, which in turn control the subsequent steps in segmentation.
(16) It is released into the urine in large quantities and thus represents a potential candidate for a protein secreted in a polarized fashion from the apical plasma membrane of epithelial cells in vivo.
(17) The anodic polarization profiles are presented, as well as scanning electron micrographs and x-ray analysis of the corroded amalgam surfaces.
(18) Descending neurons have opposite structural polarity, arising in the brain and terminating in segmental regions of the fused ventral ganglia.
(19) Immunofluorescence and immunoelectronmicroscopy experiments demonstrated that while tight junctions demarcate PAS-O distribution in confluent cultures, apical polarity could be established at low culture densities when cells could not form tight junctions with neighboring cells.
(20) Halothane variably increased the current produced (and therefore the estimated oxygen tension) at all polarizing voltages in saline solution equilibrated with either N2 or air.