| The second morphotype which comprises all illustrated paratypes, bears an outer cyst surface with trigonal pointed crystal tips. |
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| These are, in order of decreasing symmetry, the cubic, hexagonal, tetragonal, trigonal, orthorhombic, monoclinic, and triclinic systems. |
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| In this case, the c-axis, or axis of trigonal symmetry, is vertical with respect to the organic substrate and hence to the wall itself. |
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| The auricles in early ontogeny are relatively large and distinctly trigonal, with their free margins meeting the hinge line at acute angles. |
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| Pezzottaite is trigonal, whereas the other members of the beryl group are hexagonal. |
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| The models explain the trigonal pyramidal shape of fibroblast growth factor and provide a basis for interpretation of protein crystal structures. |
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| The triangular habit suggested trigonal symmetry and a possible identification as hilairite or a contact-twinned form of gaidonnayite. |
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| Rhodochrosite crystallizes in the trigonal class of the hexagonal system and occurs in a number of diverse forms. |
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| Hexagonal crystals are useful in defining our goals and successes, whilst trigonal crystal systems help us to focus on simplicity. |
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| In an associative transition state a penta-coordinated phosphorus atom would be formed, in a dissociative transition a trigonal metaphosphate. |
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| Such a planar molecule is termed a trigonal planar molecule. |
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| Multi-faceted outcrops forming small trigonal pyramid islands are common in the Yathkyed Lake area. |
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| Calcite crystallises in the trigonal system and appears in an almost endless pallet of crystal forms. |
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| Quartz belongs to the trigonal crystal system which is characterized by a vertical axis of threefold symmetry. |
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| Quartz crystallises in the trigonal scheme and forms thereby hexagonal prismatic crystals, which end into on a point converging planes. |
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| Nigella Sativa reproduces with itself and forms a fruit capsule which consists of many white trigonal seeds. |
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| The lateral profile is trigonal, and the posterior rostral face convex. |
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| The trigonal planar arrangement of the groups around the carbonyl carbon atom enables the carbon atom to be relatively open to attack from above, or below. |
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| Urinary urgency occurs as a result of trigonal or posterior urethral irritation caused by inflammation, stones, or tumor and is common with cystitis. |
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| Simple binuclear and trinuclear complexes form linear and trigonal arrangements but a tetranuclear complex can occur as a tetrahedron or a cubane structure. |
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| When the cysteine substrate is bound the geometry changes to a trigonal bipyramid, in which the substrate and the glutamic acid occupy the apical positions. |
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| Numerous examples can be found, from trigonal hillocks on diamonds to pits and highly irregular surfaces on crystals that we are accustomed to seeing in simple planar forms. |
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| Most mechanical and physical properties will be dependant on the porosity as well as the size of the pores and at the same time of the thickness of the trigonal structured studs of the metal foam. |
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| The monomeric form of the complex has a five-member chelated ring structure with distorted trigonal bipyramidal geometry. |
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| The vanadium atom occupies the center of a distorted trigonal bipyramid, with the ribose oxygen O2' at the apical position. |
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| Stibiopalladinite exhibits trigonal symmetry. |
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| The metal complexes exhibit trigonal bipyramid geometry, which is typical for nonaromatic thiosemicarbazones. |
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| Objective measures of the degree of hydrocephalus necessitate close follow-up with trigonal measurements in the identical plane. |
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| Ligand coupling reactions of sulfoxides, involving concerted intramolecular coupling of two groups bonded to sulfur, occur via a tetrasubstituted sulfurane intermediate with a trigonal pyramidal structure. |
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| Pain with downhill walking may be related to a problem in the posterior ankle including soft tissue impingement, trigonal problems, or synovial chondromatosis. |
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| Additionally, the distal tip of the catheter is open with a flat pancake-shaped balloon that ensures that the scope is consistently placed and fixed at the trigonal ridge. |
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