نتایج جستجو برای: berry
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Sucrose increases postprandial blood glucose concentrations, and diets with a high glycaemic response may be associated with increased risk of obesity, type 2 diabetes and CVD. Previous studies have suggested that polyphenols may influence carbohydrate digestion and absorption and thereby postprandial glycaemia. Berries are rich sources of various polyphenols and berry products are typically co...
X iv :0 80 1. 39 33 v1 [ co nd -m at .m es -h al l] 2 5 Ja n 20 08 Voltage-Controlled Berry Phases in Two Coupled Quantum Dots Huan Wang∗ and Ka-Di Zhu† Department of Physics, Shanghai Jiao Tong University, Shanghai 200240, P.R.China (Dated: February 3, 2008) Abstract The voltage-controlled Berry phases in two vertically coupled InGaAs/GaAs quantum dots are investigated theoretically. It is fou...
We revisit earlier studies on Berry phases suggested to appear in certain cavity QED settings. It has been especially argued that a nontrivial geometric phase is achievable even in the situation of no cavity photons. We, however, show that such results hinge on imposing the rotating wave approximation (RWA), while without the RWA no Berry phases occur in these schemes. A geometrical interpretat...
BACKGROUND Resveratrol is an important stilbene that benefits human health. However, it is only distributed in a few species including grape and is very expensive. At present, grape has been an important source resveratrol. However, the details are scarce on resveratrol distribution in different Vitis species or cultivars. METHODOLOGY/PRINCIPAL FINDING The composition and content of resveratr...
In the present paper we have directly computed the Berry curvature terms relevant for Graphene in the presence of an inhomogeneous lattice distortion. We have employed the generalized Foldy Wouthuysen framework, developed by some of us [4, 5]. Our general expressions for Berry curvature, for the special case of homogeneous distortion, reduce to the previously obtained results [13]. We propose s...
Recent progress in wave packet dynamics based on the insight of Berry pertaining to adiabatic evolution of quantum systems has led to the need for a new property of a Bloch state, the Berry curvature, to be calculated from first principles. We report here on the response to this challenge by the ab initio community during the past decade. First we give a tutorial introduction of the conceptual...
Several emergent phenomena and phases in solids arise from configurations of the electronic Berry phase in momentum space that are similar to gauge field configurations in real space such as magnetic monopoles. We show that the momentum-space analogue of the "axion electrodynamics" term E·B plays a fundamental role in a unified theory of Berry-phase contributions to optical gyrotropy in time-re...
Children use descriptive regularities of social groups (what is) to generate prescriptive judgments (what should be). We examined whether this tendency held when the regularities were introduced through group presence, category labels, or generic statements. Children (ages 4-9years, N=203) were randomly assigned to one of four conditions that manipulated how descriptive group regularities were ...
JOURNAL OF PACIFIC RIM PSYCHOLOGY Volume 4, Issue 2 pp. 95–102 Address for correspondence: John W. Berry, Queen’s University, 154 Albert St, Kingston, Ontario, Canada K7L 3N6. E-mail: [email protected] The Pacific region encompasses perhaps the most diverse set of cultures in the world. From indigenous peoples in East Asia and the Pacific islands, through to those in the Western hemisphere, and fr...
The impact of water deficit on berry quality has been extensively investigated during the last decades. Nonetheless, there is a scarcity of knowledge on the performance of varieties exposed to a combination of high temperatures/water stress during the growing season and under vineyard conditions. The objective of this research was to investigate the effects of two irrigation regimes, sustained ...
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