The electronic transport properties of carbohelicenes and heterohelicenes absorbed between two metal electrodes have been investigated by using the nonequilibrium Green's function in combination with the density function theory. The transport properties of the molecular junctions are mainly dependent on the nature of spiral molecules. The detailed analyses of the transmission spectra, the energ...

Ca spiral wave is observed in a large number of cell types. Based on a Ca model presented by Atri et al., the propagation and synchronization of the intracellular Ca spiral waves are numerically studied and some interesting results are obtained. (i) The largest Lyapunov exponents versus bifurcation parameter is calculated to investigate the oscillation of Ca and it is found that almost all of t...

Elastic valley metamaterials offer an excellent platform to manipulate elastic waves and have potential applications in energy harvesting elastography. Here we introduce a series of strategies realize topological transition spiral by parameter modulations. We show the evolution Berry curvature Chern number as function inherent parameters spiral, which further results general scheme achieve edge...

Detailed information on web geometry and the material properties of the various silks used enables the function of the web's different structures to be elucidated. In this study we investigated the non-sticky spiral in Nephila edulis webs, which in this species is not removed during web building. This permanent non-sticky spiral shows several modifications compared with others, e.g. temporary n...

9 Abstract 10 Detailed information on web geometry and the material properties of the various silks 11 used elucidates the function of the web’s different structures. In this study we investigated the 12 non-sticky spiral in Nephila edulis webs, which in this species is not removed during web13 building. This permanent non-sticky spiral shows several modifications compared to other, 14 i.e. tem...

The local space density of galaxies as a function of their basic structural parameters –like luminosity, surface brightness and scalesize– is still poorly known. Our poor knowledge is mainly the result of strong selection biases against low surface brightness and small scalesize galaxies in any optically selected sample. We show that in order to correct for selection biases one has to obtain ac...

Abstract The purpose of the present paper is to find sufficient conditions for subclasses analytic functions associated with Pascal distribution be in spiral-like univalent and inclusion relations such open unit disk

We present a new procedure to fit non-axisymmetric flow patterns to 2-D velocity maps of spiral galaxies. We concentrate on flows caused by bar-like or oval distortions to the total potential that may arise either from a non-axially symmetric halo or a bar in the luminous disk. We apply our method to high-quality CO and Hα data for the nearby, low-mass spiral NGC 2976 previously obtained by Sim...

We propose a new mathematical model for human fingerprint images. The model can be summarized by the phrase “fingerprints are holograms”. The model unifies the analysis, compression, classification, matching, and re-synthesis of fingerprints, in a self-consistent formalism. The parsimony of this model is demonstrated by the reconstruction of fingerprint images with extreme compression ratios (t...