(1) The crystals have a rhombic prismatic habit and belong to the orthorhombic space group C222(1) with unit cell dimensions a = 130 A, b = 213 A and c = 216 A. X-ray structure determination is underway.
(2) Most of the cerebellar plate has differentiated an intermediate layer, and the future rhombic lip is discernible.
(3) Treatment of oxidized enzyme with CO causes the g-tensor of the paramagnetic center to change from rhombic to axial symmetry.
(4) The large difference in their midpoint potentials (0 and -400 mV, respectively, in the soluble enzyme) permits the acquisition of individual electron paramagnetic resonance spectra characterized by nearly identical rhombic g tensors (gz = 2.025, gy = 1.93, gx = 1.905).
(5) Upon addition of substrates [such as cholesterol, 22(S)-hydroxycholesterol, 22(R)-hydroxycholesterol, 25-hydroxycholesterol, and 22-ketocholesterol], the EPR spectra exhibited many variations having rhombic symmetry in the major component and an additional minor component with less rhombic symmetry.
(6) The EPR spectra show non-zero rhombicity, the origin of which is discussed in terms of contributions from the usual zero-field effects of iron and from iron-radical spin-dipolar interaction.
(7) Center N-1a exhibits an EPR spectrum of nearly axial symmetry with g parellel = 2.03, g = 1.94, while that of Center N-1b shows more apparent rhombic symmetry with gz = 2.03, gy = 1.94 and gx = 1.91.
(8) At -120 to -100 degrees C, a rhombic signal appears, attributable to cytochrome d, followed at above -100 degrees C, by appearance of a second, axial signal near g = 6, here assigned to cytochrome(s) b, and changes in the redox state of iron-sulphur clusters.
(9) Decreasing the pH induces a shift from the rhombic towards the axial component of the signal.
(10) This result is based on the following assumptions: The crystals are rhombic dodecahedra with a greater than 4.2 nm and space group P213, thus much resembling cubic porcine glucagon; they are teleost glucagon and contain the whole glucagon content of the granule.
(11) The effect of inositol hexakisphosphate on the EPR properties of the nitric oxide derivative of ferrous dromedary (Camelus dromedarius) hemoglobin has been investigated at 110 K. In the absence of inositol hexakisphosphate, the nitrosyl derivative of dromedary hemoglobin shows an EPR spectrum with a rhombic shape and a weak hyperfine splitting in the gz region, a feature that is generally taken as characteristic of the high-affinity state of tetrameric hemoproteins.
(12) The 35 GHz spectrum of the cytochrome c reducible component shows a rhombic splitting and can be well simulated with g-values 2.18, 2.03 and 1.99.
(13) In addition, among various steroid complexes of ferrous-NO species having rhombic symmetry, the EPR spectra of 20(R),22(R)-dihydroxycholesterol complexes were significantly different from those of 22(R)-hydroxycholesterol complexes, suggesting that upon 20S-hydroxylation of 22(R)-hydroxycholesterol the conformation of the active site changes so as to facilitate subsequent cleavage of the C20-C22 bond of the cholesterol side chain.
(14) Extensive EPR studies on high-potential, iron-sulfur protein from Chromatium vinosum indicate that the singular spectrum of this four-iron, non-heme protein consists of a superposition of three distinct signals; namely, two principal signals of equal weight, one reflecting axial and the other rhombic symmetry, and a third nearly isotropic minority component.
(15) To determine the axial ligands to the low-spin heme and the heme rhombicity, the cytochrome was analyzed using low-temperature electron paramagnetic resonance (EPR) and magnetic circular dichroism (MCD) spectroscopy.
(16) The rhombic g-tensor of the EPR signal in both cases resembles that of (semi-met)RHr, the form obtained by one-electron reduction of metHr.
(17) The one-dimensional 1H NMR spectrum of the OM cytochrome b5 indicates that the rhombic perturbation of the ferric center is essentially identical to that in the microsomal beef, rabbit, chicken, and rat cytochromes b5.
(18) The K15Q iron protein and the normal iron protein had a similar total iron content and both proteins showed the characteristic rhombic EPR signal resulting from the reduced state of the single 4Fe-4S cluster bridging the two subunits.
(19) The experimental results are well explained solely by rhombic perturbation.
(20) The resulting Fe3+ possesses an EPR signal at g = 4.37 arising from conversion to a rhombic symmetry ligand field.
Rhombus
Definition:
(n.) Same as Rhomb, 1.
Example Sentences:
(1) The calculation has shown that the rounding of one of the angles of interference rhombus and its displacement towards the centre of the picture speak about either a functional deficiency of a muscle inserted into the eye ball in this place or about displacement of the point of its insertion from the limbus along the meridian of its action; displacement of one the angles of interference rhombus from the meridian speaks about displacement of the point of efforts exertion of the corresponding muscle into the same direction.
(2) Examination of eyes in a polarized light in 108 children and 24 adults with congenital concomitant convergent squint with a vertical component has shown displacement of internal angles of the rhombus of interference pictures from the horizontal axis, this speaking about anomaly of internal rectus muscles insertion.
(3) Antemolar rhombus (the anterior part of the intermolar palate) of adult Wistar rat was employed as experimental area.
(4) n. from Pungitius pungitius is near to M. paragasterostei but differs from it by the rhombus form of the spore, by less dimension of polar capsules.
(5) The figure of tetrahedron is formed in certain species of Plectus and in Tobrilus gracilis at the stage of 4 blastomeres rather than a rhombus which is formed in most highly organized nematodes.
(6) This result is taken to mean that the equilibrium constant between the two free enzyme forms (the 'circle' and the 'rhombus') is strongly dependent on temperature.
(7) If hexokinase is mixed at 4 degrees C with glucose 6-phosphate a slow increase in fluorescence of tryptophanyl residues is observed, which indicates that the 'rhombus' conformation accumulates under these conditions.
(8) Optical diffraction analysis revealed that the morphological units of both native and self-assembled S layer were essentially identical and composed of a rhombus possessing each side of 8.1 nm and interior angle of 88 degrees.
(9) Advisers to Thatcher suggested she carry a handbag and soften her voice, while Merkel got highlights, a more relaxed hairstyle and learned to deal with the issue of how to look in control by holding her hands in a rhombus shape in front of her stomach, now her trademark gesture.
(10) A rhombus-shaped skin incision around the thigh and calf, originally described by Kotz and Salzer, led to a significant discrepancy of the circumference of the proximal and distal skin borders.
(11) In the former one there are rhombus section files and triangular section files, both more flexible than old square section files.
(12) In the Mediterranean, the parasitic copepod Lepeophtheirus thompsoni Baird, 1850 specifically infests turbot (Psetta maxima L., 1758), whereas L. europaensis Zeddam, Berrebi, Renaud, Raibaut, and Gabrion, 1988 infests brill (Scophthalmus rhombus L., 1758) and flounder (Platichthys flesus L., 1758).
(13) The analysis of the Nematoda's embryogenesis allows to conclude that tetrahedron, rhombus as well as some other figures play the role of preblastula sustaining the most expedient disposition of the first blastomers for transition to the formation of the blastula.
(14) The most manifested changes in the sinus structure are noted in waterfowl and diving birds, that spend much time in flight, in dendrocolaptidae and in day predaceous birds; in them the longitudinal sinus forms a rhombus.
(15) In the most frequently observed projection form four intensity maxima were arranged at the corners of a rhombus; a cleft along the longitudinal axis of individual protomers could often be discerned.