dicyclic


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dicyclic

(daɪˈsaɪklɪk)
adj
1. (Botany) botany having the perianth arranged in two whorls; having separate petals and sepals
2. (Chemistry) chem (of a molecule) containing only two rings of atoms
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Diterpenoid resins Diterpenoid resins are primarily composed of mixtures of tricyclic (abietanes and pimaranes) and dicyclic (labdanes) resin acids.
Lycopene was found to be twice more efficient than the dicyclic [beta]-carotene (Di Mascio et al., 1989), despite of both compounds possessing Hconjugated double bonds.
The terpene compound, which can be obtained mainly from pine resin, pine-type trees, and orange skin, is the hydrocarbon with the isoprene constitution unit and can be classified into acyclic, monocyclic, dicyclic, and tricyclic types by chemical structure.
Early approaches to labeling mAbs with radiometals used DTPA, which in its dicyclic anhydride form could be conveniently coupled to mAbs (11).
According to various data (Sarvala, 1979; Kurashov, 1994; Fefilova, 2007), the species is considered cold-stenothermic, mono- or dicyclic, capable of parthenogenetic reproduction.
The Zingiberales are a classic example of the semophyletic sequence in stamen reduction from an original dicyclic androecium running in a continuous sequence (the reductive process is represented with symbols used for floral formulas; A refers to the androecium, the numbers refer to the number of stamens in a whorl, and the raised circle refers to staminodes): Musaceae [A3+3 or A3+2(1[degrees]) / Heliconiaceae [A2(1[degrees])+3] - Lowiaceae / Strelitziaceae (A3+2) - Zingiberaceae [A2[degrees]+ 1(2[degrees])] / Marantacene [A1[degrees]/2[degrees]/0+1(2[degrees])] - Costaceae [A3[degrees]+1(2[degrees])] - Cannaceae [A2[degrees]+(2[degrees])] (see, e.g., Kirchoff, 1991; Kress, 1990).