(a.) Related to the rhombohedron; presenting the form of a rhombohedron, or a form derivable from a rhombohedron; relating to a system of forms including the rhombohedron and scalenohedron.
Example Sentences:
(1) Crystal structure analysis and refinement at 2.0 A resolution of a rhombohedral crystal form of human annexin V at high calcium concentration revealed a domain motion compared to the previously analysed hexagonal crystal form.
(2) Hexagonal rods were compared to rectangular or rhombohedral rods.
(3) Assuming the organic template covers the crystal exterior, the projected rhombohedral segment, appearing hexagonal, would seem to contain the protein, hence explaining the apparent presence of the crystal ghost.
(4) Furthermore, under conditions known to lead to the formation of rhombohedral crystals of canavalin, a limiting size is reached at high concentrations of canavalin.
(5) The inspection of these surfaces using SEM and EDX revealed hexahedrally based crystals including pseudocuboidal, rhombohedral and variable rugged rocky shapes.
(6) Detailed analysis of the structure of a single bilaminar lamella shows that each sheet of the two-sheet structure is identical and made up of repeating rhombohedral units whose principal axes are in the ratio of 2:1.
(7) The crystals were rhombohedral with an edge length of 0.4 mm.
(8) Whereas segments of hexagonal rods in the section should project as octagons at the electron microscope imaging plane, and octagonal profiles are never found, rectangular or rhombohedral rod segments project as hexagons.
(9) Precession photographs show that they belong to the rhombohedral space group R3 with unit cell dimensions a = b = 145.4 A, c = 47.5 A, alpha = beta = 90 degrees and gamma = 120 degrees.
(10) In naturally desensitized areas on the same dentin surface, most of the dentinal tubules were obturated with rhombohedral crystals of all sizes; membranous structures were not observed in these tubules.
(11) The paper describes the arrangement of the atoms within rhombohedral crystals of 2Zn pig insulin as seen in electron density maps calculated from X-ray data extending to 1.5 A (1 A = 10(-10) m = 10(-1) nm) at room temperature and refined to R = 0.153.
(12) Rhombohedral crystals grow in 1.8 to 2.0 M ammonium sulfite, pH 7.8 at 21 degrees C, and tetragonal crystals grow in 2.6 M magnesium sulfate, pH 5.5 at 25 degrees C. Analysis of TNF by isoelectric focusing under native and denaturing conditions indicates that TNF molecules exist as trimers in solution.
(13) In the presence of 1% phenol, 1.0 M sodium chloride, and at a pH of 8.5, a rhombohedral form is produced with two monomers in the asymmetric unit, space group R3, a = 79.92 A and c = 40.39 A.
(14) Mg-containing calcium phosphate crystals including pseudocuboidal, rhombohedral shapes and groupings of quadrangular blades cubically arranged were found in human tooth enamel by scanning electron microscopy and by electron probe microanalysis.
(15) The hydrolytic cleavage of the peptide backbone takes place only in preparations containing rhombohedral crystals in addition to free zinc ions.
(16) The size measured corresponds to an aggregate of trimers making a unit rhombohedral cell consistent with x-ray crystallographic data (McPherson, A.
(17) C43, 1653-1655] is properly described as rhombohedral, space group R3c, with a = 12.355 (4) A, a = 51.01 (2) degrees, Z = 2.
(18) Crystals and rhombohedral aggregates of calcite, aggregates of small crystals and tabular crystals of vaterite and fibrous radial aggregates in the form of ooliths were found.
(19) Some otoconia are exceptions, evidently seeding and growing in the pure rhombohedral form.
(20) The second crystal form is rhombohedral with dimensions unit cell a = 121.1 A, alpha = 60 degrees, space group R32 and diffracts to a resolution of 3.5 A.
Trigonal
Definition:
(a.) Having three angles, or corners; triangular; as, a trigonal stem, one having tree prominent longitudinal angles.
Example Sentences:
(1) One lattice was trigonal, as in purple membrane, and showed a high-resolution electron diffraction pattern from glucose-sustained patches.
(2) Lateralis dorsalis nucleus of thalamus belong to the limbic system of Papez more by its trigonal than cingular afferent pathways.
(3) Retro-molar trigones call for combined telecobaltherapy-electrontherapy;--curie-therapy is too difficult in this area.
(4) The development of the muscular tissue of the ureter, ureterovesical junction and vesical trigone in the human fetus has been investigated using serial histological sections.
(5) The crystals are trigonal, space group P3(1)21 with axes a = b = 102.2 A and c = 58.5 A.
(6) We conclude that the bladder trigone will tolerate IORT to 20 Gy without major clinical sequellae.
(7) Enuresis after sphincteroplasty was linked with functional insufficiency of the trigonal muscle due to tissue dysembryogenesis.
(8) These findings show that an extensively ionized substrate is needed for reaction at the exocyclic N2 and O6 sites on guanosine but that the reactive intermediate is not an ideal planar trigonal carbonium ion.
(9) Two boys presented with acute bullous cystitis limited to the trigone and periureteral zone and producing marked but transient acute ureteral obstruction.
(10) MRI was better than CT at demonstrating tumours in the roof of the bladder and at the trigone.
(11) A case of adenocarcinoma development in the trigone 34 years after trigonosigmoidostomy for exstrophy of the bladder is presented.
(12) A pyramidal configuration of D-quisqualic acid would allow either rapid interconversion between active and inactive configurations at its ring junction or adoption of a trigonal configuration in solution.
(13) Two UCN join the ureters and the cecum, to which the trigone, the cervix vesicae, or the prostatic or membranous urethra is anastomosed, depending on the case.
(14) 1, The repeat length per disaccharide was 0.913 nm: 2, The molecular chain had three-fold screw symmetry: 3, The shape of the unit cell was a trigonal prism with dimensions a=b=1.28 nm, c=2.74 nm, and gamma=120 degrees: 4, The number of disaccharide residues in the unit cell was six.
(15) Although much remains to be learned, most pediatric nephrologists and urologists are now in comfortable agreement with the following assumptions: (1) Most reflux (primary reflux) is due to a congenital anatomic abnormality of the bladder trigone.
(16) The common field, where the valvular diseases and conduction disturbances occurred, was the fibrous trigone of the heart.
(17) Lesions were in the anterior part of the third ventricle in 32 cases, in the frontal horns in 6, in the trigone in 3, and in both lateral and third ventricles in 1 case.
(18) The superficial trigone responded maximally to alpha-adrenergic receptor stimulation but also produced a significant cholinergic response.
(19) Few adrenergic nerves were also found in the urinary bladder, except in the trigone area, where they were abundant.
(20) Dosimetric-computerized studies were expressed as the maximum bladder dose on the trigone, as proposed by the I.C.R.U.