Structural insight into polyphenol oxidation during black tea fermentation
Food Chemistry: X, 2023 Polyphenol oxidation during fermentation plays a critical role in the formation of flavor and function of black tea. However, how the specific structures of tea polyphenols affect their oxidation kinetics during black tea fermentation is still unknown ...
Lin Chen +4 more
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Arithmetic Nullstellensatz and Nonstandard Methods [PDF]
, 2014 In this study we find height bounds for polynomial rings over integral domains. We apply nonstandard methods and hence our constants will be ineffective.
Göral, Haydar
core
The operator rings of topological symmetric orbifolds and their large N limit
Journal of High Energy PhysicsWe compute the structure constants of topological symmetric orbifold theories up to third order in the large N expansion. The leading order structure constants are dominated by topological metric contractions.
Sujay K. Ashok, Jan Troost
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Computing an arithmetic constant related to the ring of Gaussian integers [PDF]
Mathematics of Computation, 1985 We compute the analogue for Z [ i ] {\mathbf {Z}}[i] of Euler’s constant, that is δ = lim n → + ∞ δ ...
Matthew A. Weber, F. Gramain
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Additional Factors Affecting the Rate and Mechanism of Ring Opening Reaction [PDF]
مجلة التربية والعلم, 2005 The reactions of thiosulphate ion with some bromoalkylamines of structure RR'N-(CH2)n-Br, where n = 2,3,4,5 or 6 and R - R1 - H, methyl, ethyl or isopropyl, were studied kinetically in an aqueous solution at different pH, The kinetic results for these ...
Mahmoud S.Saieed
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The Hecke algebra and structure constants of the ring of symmetric polynomials [PDF]
, 2006 We give half a dozen bases of the Hecke algebra of the symmetric group, and relate them to the basis of Geck-Rouquier, and to the basis of Jones, using matrices of change of bases of the ring of symmetric ...
Lascoux, Alain
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Study of two-dimensional electron systems in the renormalized-ring-diagram approximation
, 2006 With a super-high-efficient numerical algorithm, we are able to self-consistently calculate the Green's function in the renormalized-ring-diagram approximation for a two-dimensional electron system with long-range Coulomb interactions.
Ting, C. S., Yan, Xin-Zhong
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Effect of antioxidant activity of caffeic acid with cyclodextrins using ground mixture method
Asian Journal of Pharmaceutical Sciences, 2018 In the current study, we prepared a ground mixture (GM) of caffeic acid (CA) with α-cyclodextrin (αCD) and with β-cyclodextrin (βCD), and then comparatively assessed the physicochemical properties and antioxidant capacities of these GMs. Phase solubility
Ryota Shiozawa +3 more
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On near-rings in which the constants form an ideal [PDF]
Bulletin of the Australian Mathematical Society, 1989 Let C denote the class of all near-rings which have the property that the subnear-ring of constants forms an ideal. Prominent examples are abstract affine near-rings and a generalisation of these by Feigelstock [1]. In this note we show C forms a variety and construct a proper sub-class such that every N ε C can be embedded into some .
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Macrocyclic bis(ureas) as ligands for anion complexation
Beilstein Journal of Organic Chemistry, 2014 Two macrocyclic bis(ureas) 1 and 2, both based on diphenylurea, have been synthesized. Compound 1 represents the smaller ring with two ethynylene groups as linkers and 2 the larger ring with two butadiynylene groups.
Claudia Kretschmer +2 more
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