What's the difference between polarity and sign?

Polarity


Definition:

  • (n.) That quality or condition of a body in virtue of which it exhibits opposite, or contrasted, properties or powers, in opposite, or contrasted, parts or directions; or a condition giving rise to a contrast of properties corresponding to a contrast of positions, as, for example, attraction and repulsion in the opposite parts of a magnet, the dissimilar phenomena corresponding to the different sides of a polarized ray of light, etc.
  • (n.) A property of the conic sections by virtue of which a given point determines a corresponding right line and a given right line determines a corresponding point. See Polar, n.

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.

Sign


Definition:

  • (n.) That by which anything is made known or represented; that which furnishes evidence; a mark; a token; an indication; a proof.
  • (n.) A remarkable event, considered by the ancients as indicating the will of some deity; a prodigy; an omen.
  • (n.) An event considered by the Jews as indicating the divine will, or as manifesting an interposition of the divine power for some special end; a miracle; a wonder.
  • (n.) Something serving to indicate the existence, or preserve the memory, of a thing; a token; a memorial; a monument.
  • (n.) Any symbol or emblem which prefigures, typifles, or represents, an idea; a type; hence, sometimes, a picture.
  • (n.) A word or a character regarded as the outward manifestation of thought; as, words are the sign of ideas.
  • (n.) A motion, an action, or a gesture by which a thought is expressed, or a command or a wish made known.
  • (n.) Hence, one of the gestures of pantomime, or of a language of a signs such as those used by the North American Indians, or those used by the deaf and dumb.
  • (n.) A military emblem carried on a banner or a standard.
  • (n.) A lettered board, or other conspicuous notice, placed upon or before a building, room, shop, or office to advertise the business there transacted, or the name of the person or firm carrying it on; a publicly displayed token or notice.
  • (n.) The twelfth part of the ecliptic or zodiac.
  • (n.) A character indicating the relation of quantities, or an operation performed upon them; as, the sign + (plus); the sign -- (minus); the sign of division Ö, and the like.
  • (n.) An objective evidence of disease; that is, one appreciable by some one other than the patient.
  • (n.) Any character, as a flat, sharp, dot, etc.
  • (n.) That which, being external, stands for, or signifies, something internal or spiritual; -- a term used in the Church of England in speaking of an ordinance considered with reference to that which it represents.
  • (n.) To represent by a sign; to make known in a typical or emblematic manner, in distinction from speech; to signify.
  • (n.) To make a sign upon; to mark with a sign.
  • (n.) To affix a signature to; to ratify by hand or seal; to subscribe in one's own handwriting.
  • (n.) To assign or convey formally; -- used with away.
  • (n.) To mark; to make distinguishable.
  • (v. i.) To be a sign or omen.
  • (v. i.) To make a sign or signal; to communicate directions or intelligence by signs.
  • (v. i.) To write one's name, esp. as a token of assent, responsibility, or obligation.

Example Sentences:

  • (1) Forty-nine patients (with 83 eyes showing signs of the disease) were followed up for between six months and 12 years.
  • (2) It is concluded that during exposure to simulated microgravity early signs of osteoporosis occur in the tibial spongiosa and that changes in the spongy matter of tubular bones and vertebrae are similar and systemic.
  • (3) Clinical signs of disease developed as early as 15 days after transition to the experimental diets and included impaired vision, decreased response to external stimuli, and abnormal gait.
  • (4) The neurologic or digestive signs were present in 12% of the children.
  • (5) The recent rise in manufacturing has been welcomed by George Osborne as a sign that his economic policies are bearing fruit.
  • (6) The omission of Crossrail 2 from the Conservative manifesto , in which other infrastructure projects were listed, was the clearest sign yet that there is little appetite in a Theresa May government for another London-based scheme.
  • (7) In patients with coronary artery disease, electrocardiographic signs of left atrial enlargement (LAE-negative P wave deflection greater than or equal to 1 mm2 in lead V1) are associated with increased left ventricular end diastolic pressure (LVEDP).
  • (8) The only sign of life was excavators loading trees on to barges to take to pulp mills.
  • (9) Based on our results, we propose the following hypotheses for the neurochemical mechanisms of motion sickness: (1) the histaminergic neuron system is involved in the signs and symptoms of motion sickness, including vomiting; (2) the acetylcholinergic neuron system is involved in the processes of habituation to motion sickness, including neural store mechanisms; and (3) the catecholaminergic neuron system in the brain stem is not related to the development of motion sickness.
  • (10) Endoscopic retrograde cholangiography failed to demonstrate any bile ducts in the right postero-lateral segments of the liver, the "naked segment sign".
  • (11) There was prompt symptomatic relief and amelioration of signs of nephritis.
  • (12) In the 2nd family, several members had cerebellar signs, chorea, and dementia.
  • (13) There are several common clinical signs which should alert the physician to a possible diagnosis of SLE and which should condition him to look for specific clinical and laboratory findings.
  • (14) It is also a clear sign of our willingness and determination to step up engagement across the whole range of the EU-Turkey relationship to fully reflect the strategic importance of our relations.
  • (15) Some retailers said April's downpours led to pent-up demand which was unleashed at the first sign of summer, with shoppers rushing to update their summer wardrobes.
  • (16) About tow amyloid tumors diagnosed because of oropharyngeous signs, the authors remind the main symptoms at the upper airway and ENT tracts; the local, regional and general treatment will be discussed.
  • (17) In addition, PDBu-treated subjects showed signs of having remembered the location of the platform better than controls when tested 24 h later.
  • (18) No signs of the blood-brain barrier disruption were observed.
  • (19) Never become so enamored of your own smarts that you stop signing up for life’s hard classes.
  • (20) However, coinciding with the height of inflammation and clinical signs at 12 dpi, the GFAP mRNA content dropped to approximately 50% of the level at 11 dpi but rose again at 13 dpi.