What's the difference between octant and sector?

Octant


Definition:

  • (n.) The eighth part of a circle; an arc of 45 degrees.
  • (n.) The position or aspect of a heavenly body, as the moon or a planet, when half way between conjunction, or opposition, and quadrature, or distant from another body 45 degrees.
  • (n.) An instrument for measuring angles (generally called a quadrant), having an arc which measures up to 9O¡, but being itself the eighth part of a circle. Cf. Sextant.
  • (n.) One of the eight parts into which a space is divided by three coordinate planes.

Example Sentences:

  • (1) With stimulation of the octants next to the vertical meridian, this component was of large amplitude, while with stimulation of the octants next to the horizontal meridian, it was small and inconspicuous.4.
  • (2) The absolute configuration is proposed based on the octant rule and a biogenetic pathway for this type of homoisoflavan is briefly discussed.
  • (3) These criteria are: (1) the direction of the maximal spatial ST vector points either to the right-anterior-inferior or to the right-posterior-inferior octant, and (2) the magnitude of the projection of the maximal spatial ST vector is greater than or equal to 0.15 mV in the horizontal plane.
  • (4) The mid-temporal vectors were located in the left postero-superior octant, and the late portion of the loop was inscribed anteriorly to the right with conspicuous conduction delay.
  • (5) Their directions pointed either to: (1) the right-anterior-inferior, or (2) the right-posterior-inferior octant.
  • (6) The greatest steepening in the eyes treated with radial keratotomy compared with the untreated eyes occurred at 1.5 to 2.5 mm peripheral to the corneal apex in the inferonasal and nasal octants.
  • (7) Myocardial area and midwall perimeter were obtained for each octant, and wall thickness was calculated at end diastole (ED), isovolumetric systole (IS), and end systole (ES).
  • (8) The segmental area and its changes during the cardiac cycle were measured and calculated for each octant.
  • (9) Variability of sample size per octant was noted, but when averaged across entire muscles, it was in all instances greater than 33%.
  • (10) In this paper, circular dichroism (CD), sector projection and reverse octant rule projection of four diterpenoid dilactones and five tylophorines (two of them, 6, 8, are new compounds) are reported in which reverse octant rule projection is the first application to the configuration determination of diterpenoid dilactone.
  • (11) These cells were seen in the temporal half and dorsal-dorsonasal and ventral-ventronasal octants of the ipsilateral retina and accounted for 11.5% of all the labeled cells.
  • (12) The short-axis cross-sectional images were divided into octants and were analyzed.
  • (13) C18H22N4O2, Mr = 326.40, orthorhombic, Pbca, a = 19.475 (10), b = 10.435 (20), c = 8.762 (20) A, V = 1780.6 A3, Z = 4, Dx = 1.22 g cm-3, lambda(Mo K alpha) = 0.7107 A, mu = 0.76 cm-1, F(000) = 696, room temperature, 1564 reflections averaged from two octants, R = 0.044, wR = 0.050 for 669 observed reflections with I greater than sigma(I).
  • (14) Thirteen-channel visual evoked potentials (VEPs) to pattern-onset were recorded with stimuli restricted to individual octants of the peripheral field, to halves and to quadrants of the fovea.
  • (15) In patients with acute inferior-posterior and right ventricular infarction, the serial maximal spatial ST vector pointed to the right-posterior-inferior octant during the whole course of the acute stage.
  • (16) Stimuli consisting of checkerboard-filled octant or annular octant segments are presented as appearance-disappearance pulses at sixteen different positions in the visual field in randomized order.
  • (17) The locations of evoked cortical activity in the occipital, parietal and temporal lobes are represented on a Mercator projection map for each octant or octant segment stimulated.
  • (18) The delta vector is formed by the pre-excitation, it is oriented toward the right posterior superior, the right posterior inferior and the right anterior superior spatial octants.
  • (19) With upper field octants, the peak at 100 msec was surface-negative, while with lower field octants it was reversed in polarity.5.
  • (20) By using lactone sector rule, the olefin octant rule, allylic oxygen rule and Beecham rule with C = C-C-O and C = C-C = O chromophore, their absolute configurations were assigned.

Sector


Definition:

  • (n.) A part of a circle comprehended between two radii and the included arc.
  • (n.) A mathematical instrument, consisting of two rulers connected at one end by a joint, each arm marked with several scales, as of equal parts, chords, sines, tangents, etc., one scale of each kind on each arm, and all on lines radiating from the common center of motion. The sector is used for plotting, etc., to any scale.
  • (n.) An astronomical instrument, the limb of which embraces a small portion only of a circle, used for measuring differences of declination too great for the compass of a micrometer. When it is used for measuring zenith distances of stars, it is called a zenith sector.

Example Sentences:

  • (1) Adding a layer of private pensions, it was thought, does not involve Government mechanisms and keeps the money in the private sector.
  • (2) Asthma is probably the commonest chronic disease in the United Kingdom, and its attendant morbidity extends outside the possible scope of the hospital sector.
  • (3) It comes as the museum is transforming itself in the wake of major cuts in its government funding and looking more towards private-sector funding, a move that has caused some unease about its future direction.
  • (4) of rats resulted in cell death and terminal degeneration in entorhinal, insular, and posterior cingulate cortices, and in the CA1, CA3 and dentate gyrus sectors of hippocampus.
  • (5) The Future Forum is a group of 57 health sector specialists chaired by the Professor Steve Field, the former chair of the Royal College of General Practitioners.
  • (6) The World Humanitarian Summit in May 2016 may be the most timely opportunity to make an honest appraisal of the effectiveness of the current system to deal with the sector’s “ new normal ” of finite resources and unlimited challenges.
  • (7) This is welcome news but it needs to be borne in mind that the manufacturing sector is still far from racing ahead and serious doubts remain about the strength of demand for manufactured goods over the medium term, particularly once stimulative measures start being withdrawn.
  • (8) "Medical professionals have perhaps been the least involved [of all sectors] in debates and discussions around abortion, and anti-choice groups have very effectively carried out a deliberate strategy of targeting and influencing health professionals.
  • (9) The FCx lesions themselves were shown to have no significant effect on DA utilisation in any CP sector.
  • (10) We present a comparison of the Canadian and American data on expenditures, identifying the sectors in which the experience of the two nations diverges most, and describing the processes of control.
  • (11) Alton Towers has a long record of safe operation and as we reopen, we are committed to ensuring that the public can again visit us with confidence.” A spokesman for the park said that said that X-Sector, the high-octane section of that park where the Smiler is based, would remain closed until further notice.
  • (12) And we will sell those assets that can be managed better by the private sector.
  • (13) "It will mean root-and-branch change for our banks if we are to deliver real change for Britain, if we are to rebuild our economy so it works for working people, and if we are to restore trust in a sector of our economy worth billions of pounds and hundreds of thousands of jobs to our country."
  • (14) Despite some high profile problems, the private sector share of community services has been expanding; its market share grew around 50% in the two years from 2010-11.
  • (15) Analysis of a transposable, element-induced o2 allele, o2-m20, revealed that sectors of endosperm cells contained the nuclear-localized O2 protein, indicating excision of the transposable element.
  • (16) After clinical examination and semen analysis, we studied 4100 patients by scrotal US with sector mechanical (7.5 MHz) probe with water bag and by transrectal US for prostatic vesicular region evaluation with 5-6.5 MHz linear probe (lately we used biplanar probe).
  • (17) We are going to see a sharp fall unless sellers hold the sector up by making aggressive offers.
  • (18) Thanks to the groundbreaking technology and heavy investment of a new breed of entertainment retailers offering access services, we are witnessing a revolution in the entertainment industry, benefitting consumers, creators and content owners alike.” ERA acts as a forum for the physical and digital retail sectors of music, and represents over 90% of the of the UK’s entertainment retail market.
  • (19) Burham's claim to be the continuity candidate, coupled with his past reputation as a Blairite, suggests a centrist leadership that would stay on course in terms of private sector involvement in public services, a crackdown on benefit claimants and a tougher stance on criminals.
  • (20) Generally, patients with anterior sector conditions showed improved performance with band-pass filters (not with ND filters).