(n.) A solid bounded by eight faces. The regular octahedron is contained by eight equal equilateral triangles.
Example Sentences:
(1) The structure of the activated forms of CF1 can be described best as an intermediate between the dimeric arrangement of latent CF1 and an octahedron.
(2) Location and refinement of the two inequivalent H atoms permitted a detailed analysis of the hydrogen bonding, which occurs principally between the oxygen octahedron and the bromate groups.
(3) The room-temperature structure is very similar to that reported previously for a sample at 169 K. The water O atoms form a very slightly distorted octahedron about nickel while the perbromate-ion geometry is virtually regular tetrahedral.
(4) The central molybdenum atom adopts a distorted octahedral coordination geometry with one face of the octahedron occupied by the tridentate pyrazolylborate ligand and the opposite face by the oxo and the two phenolato ligands.
(5) The coordination environment of the Mg atom is a very nearly regular octahedron of water O atoms.
(6) The quaternary structure of the protein molecule is approximated by a model consisting of six spherical subunits situated at the vertices of an octahedron having the symmetry 32.
(7) The single type of Al ion is coordinated by six inequivalent water O atoms which form a slightly distorted octahedron.
(8) Scanning electron microscopy was employed to elucidate the structure of the crystals, which were found to exist as regular octahedrons ranging in size from 5 to 90 micrometers.
(9) The different spectral forms result from the extent of distortion of the MnIV octahedron.
(10) By computer calculation with the use of atom-atom potentials a stereochemical model of the DNA-hydrate Na+ complex was obtained according to which the Na+(H2O)6 octahedrons are localized in the narrow groove of DNA with formation of a great number of van der vaals contacts and hydrogen bonds.
(11) In the case of artificially produced conjugate containing six cross-linked CT molecules, this is observed at Wo = 43 when rc is equal to the radius of the sphere surrounding the absolute octahedron composed of six CT globules.
(12) In one simulation, one alpha-cyclodextrin form in a "truncated octahedron box" containing 611 water molecules is simulated over 90 picoseconds to mimic the solution structure.
(13) The average Al--O distance within the octahedron is 1.872 (11) A.
Triangle
Definition:
(n.) A figure bounded by three lines, and containing three angles.
(n.) An instrument of percussion, usually made of a rod of steel, bent into the form of a triangle, open at one angle, and sounded by being struck with a small metallic rod.
(n.) A draughtsman's square in the form of a right-angled triangle.
(n.) A kind of frame formed of three poles stuck in the ground and united at the top, to which soldiers were bound when undergoing corporal punishment, -- now disused.
(n.) A small constellation situated between Aries and Andromeda.
(n.) A small constellation near the South Pole, containing three bright stars.
Example Sentences:
(1) Subcortical leukomalacia occurs in this triangle as well as in border zones between the major cerebral arteries.
(2) Compression can occur on various anatomic levels: interscalene triangle, costoclavicular passage, pectoralis minor tendon.
(3) Electron micrographs of negatively stained hexamers show a characteristic curvilinear, equilateral triangle of 12 nm in diameter (top view) and a rectangle measuring 10 x 12 nm (side view).
(4) This flap is formed by a triangle-shaped excision combined with cranial and caudal slitting of the periosteum.
(5) End-on views of G on virus clearly showed triangles consisting of three dots indicating the trimeric nature of native G. End-on views of CHAPS-isolated G showed very similar triangles confirming that, using this detergent, G was solubilized in its native trimeric structure.
(6) Defensively excellent, Sampson’s players persistently forced their opponents to construct their passing triangles down a series of cul-de-sacs and blind alleys.
(7) A small square and a large triangle below it were presented in the first frame.
(8) The spinal nerve is essentially damaged at two sites: the supraclavicular fossa (where the nerve is very superficial) and in the antero-lateral triangle of the neck (where the nerve approaches the sterno-cleido-mastoid muscle).
(9) A three-dimensional configuration of the temporomandibular joint was constructed by 108 triangles for the condyle and 180 triangles for the glenoid fossa.
(10) Its principle consists in repairing the tissue defect resulting from the excision of the lower lip by the additional surgical removal of one or two soft tissue triangles from the region of the nasolabial fold and in achieving primarily, by means of horizontal relieving incisions at the base of the lip defect, an extension of the mouth aperture.
(11) On the opposite side there are obviously a few people who are full of a lot of hatred.” Jake Johnstone, who was was wearing the pink triangle of the 1980s Act Up movement, said: “Obviously we had the Paris attacks and everyone was shocked by it, but because Orlando was an attack on the LGBT community it feels very personal and a lot of people feel deeply affected by it.
(12) A technique of thoracotomy via the triangle of auscultation is described.
(13) The topographic anatomy of the submandibular triangle and its contents are described in terms of four surgical planes, with considerations of the anatomic complications during surgery.
(14) The minor anatomic triangles of the neck are outlined, with appropriate direct external vessel ligation.
(15) Ward's triangle was the most sensitive area to bone mineral density changes in patients receiving prednisone, with a highly significant intergroup difference (p < 0.01).
(16) Bone mineral content (BMC) of the lumbar spine (L2-L4), femoral neck, Ward's triangle and the trochanteric region was measured in 52 consecutive patients on maintenance haemodialysis.
(17) Prevention of this obstructive type of apnea would depend on the recognition of infants showing inspiratory and expiratory changes in pharyngeal airway size as can be seen externally by the movements in the carotid triangle of the neck and confirmed by roentgenography or cinematoradiography.
(18) Microtubules capable of binding a xamimum of 4 linkers are arranged in regularly distorted hexagons and equilateral triangles.
(19) Twelve homosexual patients with Kaposi's sarcoma associated with the acquired immune deficiency syndrome (AIDS) were treated with a preparation of purified human lymphoblastoid interferon (Wellferon [Burroughs Wellcome, Research Triangle Park, NC]).
(20) The "dangerous zones" are situated at the base of the right-side surface of the interatrial septum above the fibrous ring of the septal cusp of the tricuspid valve, along the base of the membranous segment of the interventricular septum, in front of the posterior fibrous triangle, and at the fibrous ring encircling the bases of the posterior and right aortic semilunar valves.