Abstract. We provide the first classical derivation of the Lloyd–Berry formula for the effective wavenumber of an acoustic medium filled with a sparse random array of identical small scatterers. Our approach clarifies the assumptions under which the Lloyd–Berry formula is valid. More precisely, we derive an expression for the effective wavenumber which assumes the validity of Lax’s quasicrystal...

Berry phase for a spin–1/2 particle moving in a flat spacetime with torsion is investigated in the context of the Einstein-Cartan-Dirac model. It is shown that if the torsion is due to a dense polarized background, then there is a Berry phase only if the fermion is massless and its momentum is perpendicular to the direction of the background polarization. The order of magnitude of this Berry ph...

The carotenoid content was examined in leaf and berry tissues of grapevines (cv. Cabernet Sauvignon) grown either under ambient conditions or under a polyester film to reduce UV light by 98%. Total carotenoids in leaves were less in vines grown under the UV screen. Levels of beta-carotene decreased with berry development around veraison. This effect was more pronounced in vines grown under redu...

Topological energy bands have important geometrical properties described by the Berry curvature. We show that the Berry curvature changes the hydrodynamic equations of motion for a trapped Bose-Einstein condensate, and causes significant modifications to the collective mode frequencies. We illustrate our results for the case of two-dimensional Rashba spin-orbit coupling in a Zeeman field. Using...

Abstract The color of 'Crimson Seedless' berries is a major constraint in expanding marketing and export potential. target this investigation to enhance the quality by using brassinolide (BL) girdling treatments, individually combination, as an alternative ethephon over two consecutive seasons. obtained results revealed that combined treatment BL at 2.0 mg/L recorded highest significant yield v...

Thioredoxins (Trxs) are small ubiquitous disulfide reductases that participate in dithiol-disulfide exchange reactions. In contrast to animals and prokaryotes that typically possess one or a few genes encoding Trxs, higher plants contain eight different Trx types: f, m, x, y, z, o, s, and h. Trx h with multiple forms is involved in different processes such as seed germination, cellular protecti...

The aims of this work were modelling the effect water stress intensity during post-veraison on table grape quality and yield, as well predicting berry at harvest using a machine learning algorithm. dataset was obtained by applying different irrigation regimes in two commercial vineyards seven growing seasons. From these data, it possible to train validate predictive models over wide range value...

Betacyanins are betalain derivatives showing a red-violet color suitable as natural food colorant. An aqueous extract rich in betacyanin pigments and phenolic compounds from Alternanthera brasiliana was characterized using high-performance liquid chromatography system with diode array electrospray mass spectrometry detection. The major betacyanins (amaranthine, isoamaranthine, betanin isobetani...

Primocane raspberry (Rubus idaeus L.) may produce crop on the lower part of cane during second year its’ growth cycle, if canes are retained over winter. We aimed to evaluate floricane cropping potential and berry quality in seven primocane cultivars, which too late for fall Northern growing conditions. Long plants these cultivars were produced, overwintered, grown like a high tunnel. Harvestin...

Geometric phases in quantum mechanics play an extraordinary role in broadening our understanding of fundamental significance of geometry in nature. One of the best known examples is the Berry phase [M.V. Berry (1984), Proc. Royal. Soc. London A, 392:45], which naturally emerges in quantum adiabatic evolution. So far the applicability and measurements of the Berry phase were mostly limited to sy...