(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.
Volar
Definition:
(a.) Of or pertaining to the palm of the hand or the sole of the foot.
Example Sentences:
(1) Each subject applied a vehicle cream containing 0.075% capsaicin (Axsain, GalenPharma Inc.) to a 4 cm2 area of skin on one volar forearm and vehicle alone to an identical treatment area on the other forearm, according to a double-blind procedure.
(2) Weakness of the flexor pollicis longus, flexor digitorum profundus and pronator quadratus is usually related to an isolated paralysis of the anterior interosseous nerve in the volar aspect of the forearm.
(3) The procedure to accomplish this end utilizes the measured thermal pain threshold, surface temperature, exposure time, and incident energy on a standardized skin site (volar surface of the forearm) to obtain conductivity values.
(4) It is suggested that this is due to the fact that the small animals have discrete, elevated volar pads.
(5) The treatment of a Smith type-II fracture is a volar buttress plate unless extended comminution is present.
(6) Volar subluxation of the tendons of the first dorsal compartment of the wrist occurred in two patients after surgery for treatment of de Quervain's stenosing tenosynovitis.
(7) Bleeding into the anterior muscles and into the volar aspect of the wrist, on the other hand, was complicated by contracture, neuropathy, or both in six cases.
(8) Histologic examination of the volar carpal ligament showed fibrocartilaginous changes suggesting a progressive degenerative phenomenon.
(9) Using a volar technique, rather than the traditional dorsal method, allows stabilization of the constructed metacarpophalangeal joint and maximizes flexor function.
(10) We have constructed a device for standardized radiodiagnostics of ulnar, volar, and radial capsulo-ligamentous lesions of the basal thumb joint.
(11) The tests, performed on volar forearm skin, were removed after a 24-h application.
(12) The effect of application site on anthralin inflammation was measured at 10 clinically normal volar skin sites on each forearm of 31 subjects as the increase in skin thickness at 48 h using Harpenden calipers.
(13) This report describes the successful use of a free sensory medial plantar flap for the reconstruction of the volar skin of the index finger.
(14) This study examined input-output relation of the somatosensory system in response to mechanical air-puff stimuli applied to the volar aspect of the tip of the index finger.
(15) This was achieved with good result by release of all the retaining ligaments around the proximal interphalangeal joint including both the collateral ligaments, the volar plate, the transverse retinacular ligaments, and extensor tenolysis.
(16) The interval between injury and the onset of symptoms of volar compartment syndrome varied between 12 and 48 hours.
(17) The flag flap, elevated from the dorsal aspect of the proximal phalanx, may be employed as a one-stage procedure to cover a loss of soft tissue on the volar aspect of the adjacent finger, the staff of the flap running over an oblique web-space incision.
(18) We decided to test Chrysaora hysoscella dermotoxicity on healthy volunteers by cutting a Chrysaora hysoscella tentacle and placing it on a gauze soaked in a solution of 3% NaCl and applying then to the volar side of the right wrist for one minute.
(19) This provides good quality cover to the volar aspect and avoids bulk on the dorsum.
(20) For these sites thin and pliant fasciocutaneous flaps are ideal tissue transfers, and we favour the radial forearm flap which is raised from the distal volar forearm.