Results 31 to 40 of about 174,602 (303)
Stereoisomers of Colourless Carotenoids from the Marine Microalga Dunaliella salina
Molecules, 2020 Carotenoids comprise a diverse range of naturally occurring stereoisomers, which differ in their physico-chemical properties. Their biosynthesis begins with phytoene, which is a rarity among carotenoids because it is colourless.
Laura Mazzucchi +2 more
doaj +1 more source
Cumhuriyet Science Journal, 2021 The dissociative ionization processes of heptane molecule with nine isomers have been investigated and presented experimentally in detail by courtesy of femtosecond laser mass spectrometry technique with a fundamental wavelength of 800 nm and 90 fs pulse
Hamdi Şükür Kılıç +2 more
doaj +1 more source
Computer generation of isomers [PDF]
Computers & Chemistry, 1982 Abstract A computer program is developed for the enumeration of the isomers of polysubstituted compounds with b1 subtituents of the type 1, b2 subtituents of the type 2,.…, bn subtituents of the type n. The procedure is illustrated with octahedral molecules containing 4 kinds of subtituents (such as F, Cl, Br, and I) and the isomers of polysubtituted
openaire +2 more sources
Crystal structures of two isomeric 2-aryl-3-phenyl-1,3-thiazepan-4-ones
Acta Crystallographica Section E: Crystallographic Communications, 2019 The crystal of 6-(3-nitrophenyl)-7-phenyl-5-thia-7-azaspiro[2.6]nonan-8-one (1), C19H18N2O3S, has monoclinic (P21/n) symmetry while that of its isomer 6-(4-nitrophenyl)-7-phenyl-5-thia-7-azaspiro[2.6]nonan-8-one (2), has orthorhombic (Pca21) symmetry ...
Hemant P. Yennawar +2 more
doaj +1 more source
, 2017 Lycopene has a large number of geometric isomers caused by E/Z isomerization at arbitrary sites within the 11 conjugated double bonds, offering varying characteristics related to features such as antioxidant capacity and bioavailability.
Chitoshi Kitamura (2401963) +7 more
core +1 more source
, 2019 Development of novel nanoscale devices requires unique functional nanomaterials. Furthermore, chemical design of different nanoparticles in one unit is a complex task, particularly the application of self-assembly J-aggregates, which can substantially ...
Georgios E. Arnaoutakis (7122107) +9 more
core +1 more source
MALDI TIMS IMS of Disialoganglioside Isomers – GD1a and GD1b in Murine Brain Tissue [PDF]
, 2021 Gangliosides are classified as acidic glycosphingolipids, containing ceramide moieties and oligosaccharide chains with one or multiple sialic acid residue(s).
Jeffrey, Spraggins +6 more
core +2 more sources
Isomeric Differentiation of Four Triterpene Acids Using Full Collision Energy Ramp-MS2 Analysis
Zhipu XuebaoTriterpene acids, a subclass of acidic triterpenoids existing in their free state, are widely distributed throughout traditional Chinese medicine (TCM).
Li-juan WU +5 more
doaj +1 more source
Biological Activities of a-Pinene and β-Pinene Enantiomers
Molecules, 2012 The antimicrobial activities of the isomers and enantiomers of pinene were evaluated against bacterial and fungal cells. The agar diffusion test showed that only the positive enantiomers of the a- and β-isomers of pinene were active.
Danielle Cristina Machado Costa +5 more
doaj +1 more source
International Journal of Modern Physics E, 2006 As a subset of radioactive beams, isomer beams open up the dimensions of excitation energy and angular momentum. The problem of isomer decay rates is briefly presented, as they are not yet well understood. The use of isomer beams for nuclear structure investigations is reviewed, using examples related to exotic decay modes, charge radii, and Coulomb ...
openaire +4 more sources