Topological modes (TMs) are typically localized at boundaries, interfaces and dislocations, and exponentially decay into the bulk of a large enough lattice. Recently, the non-Hermitian skin effect has been leveraged to delocalize the wave functions of TMs from the boundary and thus to increase the capacity of TMs dramatically. Here, we explore the capability of nonlinearity in designing and configuring the wave functions of TMs.
View Article and Find Full Text PDFThe unstable quality of Polyporus umbellatus sclerotia during cultivation is the key factor affecting the quality and yield of P. umbellatus sclerotia. In order to provide technical support for obtaining superior P.
View Article and Find Full Text PDFThe seedling survival rate, yield, and individual weight of Gastrodia elata is closely related to the soil relative water content(RWC) and the growth characteristics of the associated fungi Armillaria spp. This study explored the effects of the soil RWC on the growth characteristics of Armillaria spp. and the seedling production of G.
View Article and Find Full Text PDFPhys Rev Lett
February 2024
The exotic physics associated with exceptional points (EPs) is always under the scrutiny of theoretical and experimental science. Recently, considerable effort has been invested in the combination of nonlinearity and non-Hermiticity. The concept of nonlinear EPs (NEPs) has been introduced, which can avoid the loss of completeness of the eigenbasis in dynamics while retaining the key features of linear EPs.
View Article and Find Full Text PDFExceptional points (EPs) are special spectral singularities at which two or more eigenvalues, and their corresponding eigenvectors, coalesce and become identical. In conventional wisdom, the coalescence of eigenvectors inevitably leads to the loss of completeness of the eigenbasis. Here, we show that this scenario breaks down in general at nonlinear EPs (NEPs).
View Article and Find Full Text PDFZhongguo Zhong Yao Za Zhi
June 2023
Zhongguo Zhong Yao Za Zhi
June 2023
The gene GeDTC encoding the dicarboxylate-tricarboxylate carrier protein in Gastrodia elata was cloned by specific primers which were designed based on the transcriptome data of G. elata. Bioinformatics analysis on GeDTC gene was carried out by using ExPASY, ClustalW, MEGA, etc.
View Article and Find Full Text PDFHigher-order exceptional points (HOEPs) with extraordinary responsivity are expected to exhibit a vastly improved performance in detection-related applications. However, over the past few years, such an approach has been questioned due to several potential drawbacks, including the stringent parameter requirements, fundamental resolution limits and noise. Here, exploring the consequence of nonlinear gain saturation in exceptional singularities of non-Hermitian systems, we offer a feasible scheme to overcome all the above difficulties.
View Article and Find Full Text PDFZhongguo Zhong Yao Za Zhi
January 2023
This study aims to screen a strain from Armillaria for the cultivation of Gastrodia elata. Specifically, Armillaria strains were isolated from different producing areas of G. elata and identified.
View Article and Find Full Text PDFWith advances in synthetic biology and genome engineering comes a heightened awareness of potential misuse related to biosafety concerns. A recent study employed machine learning to identify the lab-of-origin of DNA sequences to help mitigate some of these concerns. Despite their promising results, this deep learning based approach had limited accuracy, was computationally expensive to train, and wasn't able to provide the precise features that were used in its predictions.
View Article and Find Full Text PDFZhongguo Zhong Yao Za Zhi
October 2020
In the theories of empirical identification of "arguments on quality" and "five elephants and seven originals", color is regarded as one of the important indicators in the quality evaluation of Chinese medicine. The color of medicinal material including the surface color, the internal color, and the color after processing is caused by the pigment in the cells, which is a characteristic of the "optimal shape". Most pigments have a wide range of pharmacological activities such as anti-oxidation, anti-tumor, anti-atherosclerosis, prevention of coronary heart disease, protection of cardiovascular function, enhancement of immunity, etc.
View Article and Find Full Text PDFIn order to improve the quality and yield of Gastrodia elata f. glauca,determine the suitable Armillaria strains for the accompanying experiment in Xiaocaoba,Yiliang,four Armillaria strains were selected. They were used for G.
View Article and Find Full Text PDFThis paper proposes a two-stage framework for fast image interpolation via random forests (FIRF). The proposed FIRF method gives high accuracy, as well as requires low computation. The underlying idea of this proposed work is to apply random forests to classify the natural image patch space into numerous subspaces and learn a linear regression model for each subspace to map the low-resolution image patch to high-resolution image patch.
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