Weyl Point and Nontrivial Surface States in a Helical Topological Material

Topological material has been widely studied in recent years because of excellent physical properties. In this paper, a Weyl topological material composed of the double left-handed helixes is presented. It is demonstrated that the proposed structure possesses a two-dimensional complete topological nontrivial bandgap for a fixed kz in the microwave frequency, and the robust surface states are observed. This unique function provides a promising platform for the development of photonics and electromagnetics.

The nice-of-you construction and its fragments

This article argues that a usage-based construction (a conventional pairing of form and function) is required to account for a certain pattern of English exemplified by e.g., it’s nice of you to read this. Contemporary corpus and survey data reveal that the construction is strongly associated with certain adjectives (e.g., nice, good) over others, while diachronic data demonstrate that the construction’s overall frequency has systematically waxed and waned over the past century. The construction’s unique function – namely to concisely convey a judgment regarding how an action reflects on the agent of the action – enables us to predict many observations about its distribution without stipulation. These include restrictions on the interpretation of adjectives that occur in the construction, its infinitive complement, the modal verbs that may appear in it and its ability to be embedded. We further observe that certain conventional fragments of the construction evoke the semantics of the entire construction. Finally, we situate the construction within a network of related constructions, as part of a speaker’s “construct-i-con”.

On the stress dependence of the elastic tensor

Summary The dependence of the elastic tensor on the equilibrium stress is investigated theoretically. Using ideas from finite elasticity, it is first shown that both the equilibrium stress and elastic tensor are given uniquely in terms of the equilibrium deformation gradient relative to a fixed choice of reference body. Inversion of the relation between the deformation gradient and stress might, therefore, be expected to lead neatly to the desired expression for the elastic tensor. Unfortunately, the deformation gradient can only be recovered from the stress up to a choice of rotation matrix. Hence it is not possible in general to express the elastic tensor as a unique function of the equilibrium stress. By considering material symmetries, though, it is shown that the degree of non-uniqueness can sometimes be reduced, and in some cases even removed entirely. These results are illustrated through a range numerical calculations, and we also obtain linearised relations applicable to small perturbations in equilibrium stress. Finally, we make a comparison with previous studies before considering implications for geophysical forward- and inverse-modelling.

Текстуализация эпических текстов и формирование функциональных глав: текстологический анализ песни о воскрешении богатырей в монгольском «Гэсэре»

The Mongolian “Geser” is an epic cycle consisting of many songs, which originally consisted of one or more chapters. In the process of forming the cycle, some chapters acquire structural and functional features that differ from traditional Mongolian epics, and these atypical features characterize the uniqueness of the process of formation and functioning of some chapters of the epic. One of these texts with atypical features in the structure, theme and plot is the chapter on the resurrection of the heroes of Gesar. In this article, on the basis of structural analysis, a comparative analysis of this chapter with the text of the Mongolian historical chronicle “Altan Tobchi” is given. It is assumed that the formation of an atypical structure of this chapter is focused on its unique function, that is, there is a transformation of the traditional functions of both the narrative and lyrical parts of this chapter. The narrative part has the discursive function of connecting other independent chapters and the logical function of connecting “Gesar” with the Mongolian heroic epic tradition, while the lyrical part reveals the independence and heroism of the plot, thereby allowing the simple plot to become an independent heroic epic chapter.

Power Series.Orthogonal Operational Expansions

Formulation of the classic Taylor series as an orthogonal concept based on identifying the expansions coefficients as differential transformation applied to a unique function; definition of operational orthogonality by analogy with the Hilbert space and identification of the nth derivative at a point based on the improper integral on the positive semiaxis ; deduction of inversion integrals for Laplace transforms for analytical functions

Power Series.Orthogonal Operational Expansions

Formulation of the classic Taylor series as an orthogonal concept based on identifying the expansions coefficients as differential transformation applied to a unique function; definition of operational orthogonality by analogy with the Hilbert space and identification of the nth derivative at a point based on the improper integral on the positive semiaxis ; deduction of inversion integrals for Laplacen transforms for analytical functions.

The Verb “ha” in Laki Language from the Perspective of the Head-complement Parameter; A Typological Approach

The present article examined the function of one of Greenberg's implicational universals in the Laki language from a typological point of view and studied the word order in sentences with adposition in this language. In data analysis, the unique function of the verb “ha” became the main focus of the research. The analyses illustrated that, unlike other verbs of this language, in the sentences with adposition, in some grammatical features, this verb has the character of verb-final. In order to study this phenomenon, the article first identified and determined different linguistic elements that are the source of this unique function in different contexts. Then, referring to some important explanations of language typology, it explained the cause of this linguistic phenomenon and indicated that some motivation or forces are involved in explaining the different behavior of the verb “ha”.

Harnessing the strategy of metagenomics for exploring the intestinal microecology of sable (Martes zibellina), the national first-level protected animal

Sable (Martes zibellina), belongs to Carnivora, Mustelidae and Maretes, was mainly distributed among the cold northern zone of Eurasia. The purpose of this study is to explore the intestinal flora of the sable by the method of the metagenomic library-based technique, libraries were sequenced on an Illumina HiSeq 4000 instrument. Effective Data volume of each sample is above 6000M, the ratio of the Effective Data (the Clean Data) to original Data (Raw Data) is over 98%. According to the analysis of statistical data, the Total length of ORF is about 603,031, which is 347.36 Mbp. We contrast the unique function of genes with KEGG database, we acquire 7140 genes (KO), a total of all the samples KO is 129788. We selected higher abundance genes to draw cluster heat maps, and according to the results of the KEGG metabolic pathway annotations, we acquire the gene function，including metabolism, environmental information processing, genetic information processing, cellular process and organismal systems. We contrast the unique function of genes with CAZy database, the functional carbohydrate hydrolases have corresponding genes in the intestinal microorganisms of the sable. This is closely related to the fact that the sable is adapted to cold environments and requires a large amount of energy to maintain its metabolic activity. We contrast the unique function of genes with eggNOG database，the main functions of genes included gene duplication, recombination and repair, transport and metabolism of amino acids, transport and metabolism of carbohydrates, etc. In this study, we intended to identify the complex microbial population structure of sables based on metagenomic sequencing method, which uses the whole metagenomic data, mapping the sequences to the known genes or the pathways in the existing databases, such as CAZy, KEGG, or eggNOG, and then exploring the genetic composition and functional diversity of microbial community based on the mapped functional categories.

CA2: A Highly Connected Intrahippocampal Relay

Although Lorente de No’ recognized the anatomical distinction of the hippocampal Cornu Ammonis (CA) 2 region, it had, until recently, been assigned no unique function. Its location between the key players of the circuit, CA3 and CA1, which along with the entorhinal cortex and dentate gyrus compose the classic trisynaptic circuit, further distracted research interest. However, the connectivity of CA2 pyramidal cells, together with unique patterns of gene expression, hints at a much larger contribution to hippocampal information processing than has been ascribed. Here we review recent advances that have identified new roles for CA2 in hippocampal centric processing, together with specialized functions in social memory and, potentially, as a broadcaster of novelty. These new data, together with CA2's role in disease, justify a closer look at how this small region exerts its influence and how it might best be exploited to understand and treat disease-related circuit dysfunctions.