毕竟逆半群的全子半群格

基于正则半群和逆半群的理论知识,构造出关于毕竟逆半群的全子半群格。通过分析毕竟正则半群的全子半群格的性质,来研究毕竟逆半群的等同性质,最后给出毕竟逆半群的全子半群格是一个分配格的一个等价性质。

全子半群构成链的正则半群

半群S的子半群定义为全子半群,若S的所有幂等包含在子半群中。通过研究正则半群的全子半群格,得到了正则半群的全子半群格构成链的一个充分必要条件。并且推广出一类特殊的正则半群,纯正半群的全子半群格构成链的一个充分必要条件。进而得到纯正半群S的全子半群格构成链,当且仅当正则半群S的全正则子半群格构成链。

全子半群构成链的富足半群

全子半群定义为含有所有幂等元的子半群.半群称为▽_(fs)-半群,如果它的所有全子半群关于集合包含关系构成一个链.本文研究富足▽_(fs)-半群,得到这类半群的若干特征,特别地,建立了完全0-单▽_(fs)-半群和满足正则性条件的本原富足▽_(fs)-半群的结构.

偏序半群的同态和商序同态的若干重要性质

通过对偏序半群的拟序、商拟序、同余和σ-全子半群的研究,得到偏序半群的同态的一些重要性质和商序同态的一些重要性质,同时分析这些性质之间的区别.

从威尔伯的大宇宙观看组织目标的复杂性与合作演化

传统的组织目标研究已经意识到人的行为的影响,开始越来越多地考虑人的因素,提出了使命、价值观、目的等字眼。但是由于仍然没有跳出传统的思维方式和视野,总是把共享的价值观凌驾于组织目标之上,因此,面临的最艰巨的困难就是如何在目标设定时既充分考虑这些主观层面上的因素,又保持目标的定量化和具体化描述;文章从肯.威尔伯的全子四维层次图入手分析,得出了两个结论:一是对应于外在的组织目标体系,还存在着一个内在的价值观体系,因此,对组织目标系统的描述至少需要两套体系,一套是关于内在感受的价值体系,这套价值体系只能被诱导和理解,而不能被强制和操控;另一套是关于指导具体行为的外在目标体系,这套体系在一定程度上是可以被操控的。这个划分是对传统组织目标体系认识上的突破,是文章一个非常重要的创新点。二是合作是组织目标的基础,因此,在研究组织目标冲突时,一定要放在更高的共同利益基础上才能得到解决。

Data-Driven Viewpoint for Developing Next-Generation Mg-Ion Solid-State Electrolytes

Magnesium(Mg)is a promising alternative to lithium(Li)as an anode material in solid-state batteries due to its abundance and high theoretical volumetric capacity.However,the sluggish Mg-ion conduction in the lattice of solidstate electrolytes(SSEs)is one of the key challenges that hamper the development of Mg-ion solid-state batteries.Though various Mg-ion SSEs have been reported in recent years,key insights are hard to be derived from a single literature report.Besides,the structure-performance relationships of Mg-ion SSEs need to be further unraveled to provide a more precise design guideline for SSEs.In this viewpoint article,we analyze the structural characteristics of the Mg-based SSEs with high ionic conductivity reported in the last four decades based upon data mining-we provide big-data-derived insights into the challenges and opportunities in developing next-generation Mg-ion SSEs.

一体两面论:关于“人之现象”的新形而上学——一个回应“人之现象”的形而上学

科学方法和科学世界观在解释"人之现象"特别是现象意识中的身-心关系时,似乎陷入了困境。这一困境源自近代科学关于事物存在方式的形而上学及其方法论。走出这一困境的根本出路在于重构形而上学。基于怀特海、德日进、威尔伯等人的努力,扩展了的"一体两面论"可以成为解释"人之现象"的新形而上学,它的核心是,任何事物既有外在性一面也有内在性一面,或者说,它既有第一人称视角体验的一面也有被第三人称视角观察的一面,而这两个面向在事物演化进程中是对应的。

Synthesis of High Purity Lithium Sulfide for Sulfide Solid Electrolyte Applications through Hydrogen Reduction of Lithium Sulfate

This paper is aimed to present a clean,inexpensive and sustainable method to synthesize high purity lithium sulfide(Li_(2)S)powder through hydrogen reduction of lithium sulfate(Li_(2)SO_(4)).A three-step reduction process has been successfully developed to synthesize well-crystallized and single-phase Li_(2)S powder by investigating the melting,sintering and reduction behavior of the mixtures of Li_(2)SO_(4)-Li_(2)S.High purity alumina was found to be the most suitable crucible material for producing high purity Li_(2)S,because it was not attacked by the Li_(2)SO_(4)-Li_(2)S melt during heating,as compared with other materials,such as carbon,mullite,quartz,boron nitride and stainless steel.The use of synthesized LizS resulted in higher purity and substantially higher room temperature ionic conductivity(2.77 mS·cm^(-1))for the argyrodite sulfide electrolyte Li_(6)PS_(5)Cl than commercial Li_(2)S(1.12 mS·cm^(-1)).This novel method offers a great opportunity to produce battery grade Li_(2)S for sulfide solid electrolyte applications.

右逆半群上的一类偏序关系

引入了右逆半群的自共轭强全子半群和局部极大锥形的概念.由自共轭强全子半群出发,构造出了右逆半群上的一种偏序关系,并由此给出了右逆半群上的自然偏序的新刻画.

Study on Microsatellite Distribution in Complete Genomes of Tobacco Vein Clearing Virus

MATLAB software and optimal complete subgraph algorithm were used to extract and reveal the microsatellite distribution features in the complete genomes of the tobacco vein clearing virus （NC-003 378.1） from the NCBI database.The results showed that the repetitions number and their location of the N-base group has been extracted and displayed.The largest repetitions of N-base group in the complete genomes of the tobacco vein clearing virus was decreased as the exponential function with the increasing of N.The method used in this study could be applied to the extraction and revealing of the microsatellite distribution features in the complete genomes of other viruses,thereby provided a basis for the research of the structure and the law of function,inheritance and variation by the using of the microsatellite distribution features.

Comprehensive Assessment of Drought Resistance of Proso Millet Germplasm Resources in Shanxi

In order to clarify drought resistance of proso millet applied in field production in Shanxi, we identified its drought resistance during the whole growth period and measured nine traits, including plant height, panicle length, stem diameter, panicle weight, grain weight per spike, straw weight per plant, node numbers of main stem, 1 000-grain weight and effective panicles, under different treatments. Principal component analysis and stepwise regression analysis were used for comprehensive evaluation of drought resistance during the whole growth period and screening the drought index. The results showed that there were correlations among 9 phenotypic traits. The coefficient of variation of panicle weight and straw weight per plant sharply reduced under normal water supply and drought stress. Landrace ＂yellow millet＂ had the strongest drought resistance（D =0.87）, integrated drought D value and membership function value of yield had significant correlation（r =0.515 9, P〈0.05）. Panicle weight and straw weight per plant had significant impact on drought resistance and could be taken as comprehensive indexes of drought resistance identification in growth period.

Study on Safe Dosage of Imazethapyr for an Imazethapyr Resistant Millet Variety and Its Effect on Weed Control

[Objective] This study aimed to investigate the safe dosage of imazethapyr for an imazethapyr resistant millet variety and its effect on weed control. [Method] The Imazethapyr resistant millet ＂M1508＂ was used as the experimental material and the experiment was arranged in a split plot design with two factors： herbicide application time and herbicide dosage. Application time was taken as the main plot with six treatments： A1 （preemergence treatment）, A2 （postemergence treatment on the 3rd d）, A3 （postemergence treatment on the 6th d）, A4 （postemergence treatment on the 9th d）, A5 （postemergence treatment on the 12th d）, A6 （postemergence treatment on the 15th d）; spraying dosage（B） with nine treatments： B1 （0 ml/hm2 , taking water as control）, B2 （750 ml/hm2 ）, B3 （1 125 ml/hm2 ）, B4 （1 500 ml/hm2 ）, B5 （2 250 ml/hm2 ）, B6 （3 000 ml/hm2 ）, B7 （4 500 ml/hm2 ）, B8 （6 000 ml/hm2）, B9 （7 500 ml/hm2 ）; water was added at 675 kg/hm2 . [Result] Imazethapyr showed a good herbicidal effect, and the imazethapyr resistant new variety M1508 also had a high drug resistance; the dosage range of 750 -7 500 ml/hm2 was safe for millet; considering the weed control efficacy, the yield and weeding cost comprehensively, postemergence treatment on the 6th day at 1 500 -2 250 ml/hm2 was the best for herbicide application. [Conclusion] Matched chemical weeding techniques to imazethapyr resistant millet varieties were preliminarily identified, and the efficacy of imazethapyr on weed control and its security on millet were investigated, providing references for the application and promotion of imazethapyr resistant millet varieties.

Multiobjective particle swarm inversion algorithm for two-dimensional magnetic data

Regularization inversion uses constraints and a regularization factor to solve ill- posed inversion problems in geophysics. The choice of the regularization factor and of the initial model is critical in regularization inversion. To deal with these problems, we propose a multiobjective particle swarm inversion （MOPSOI） algorithm to simultaneously minimize the data misfit and model constraints, and obtain a multiobjective inversion solution set without the gradient information of the objective function and the regularization factor. We then choose the optimum solution from the solution set based on the trade-off between data misfit and constraints that substitute for the regularization factor. The inversion of synthetic two-dimensional magnetic data suggests that the MOPSOI algorithm can obtain as many feasible solutions as possible; thus, deeper insights of the inversion process can be gained and more reasonable solutions can be obtained by balancing the data misfit and constraints. The proposed MOPSOI algorithm can deal with the problems of choosing the right regularization factor and the initial model.

Conformations of Carnosine in Aqueous Solutions by All-Atom Molecular Dynamics Simulations and 2D-NOSEY Spectrum

All-atom molecular simulations and two-dimensional nuclear overhauser effect spectrum have been used to study the conformations of carnosine in aqueous solution. Intramolecular distances, root-mean-square deviation, radius of gyration, and solvent-accessible surface are used to characterize the properties of the carnosine. Carnosine can shift between extended and folded states, but exists mostly in extended state in water. Its preference for extension in pure water has been proven by the 2D nuclear magnetic resonance （NMR） experiment. The NMR experimental results are consistent with the molecular dynamics simulations.

All-atom Molecular Dynamics Simulationsand NMR Spectroscopy Study on Interactions and Structures in N-Glycylglycine Aqueous Solution

All-atom molecular dynamics （MD） simulation and the NMR spectra are used to investigate the interactions in N-glycylglycine aqueous solution. Different types of atoms exhibit different capability in forming hydrogen bonds by the radial distribution function analysis. Some typical dominant aggregates are found in different types of hydrogen bonds by the statistical hydrogen-bonding network. Moreover, temperature-dependent NMR are used to compare with the results of the MD simulations. The chemical shifts of the three hydrogen atoms all decrease with the temperature increasing which reveals that the hydrogen bonds are dominant in the glycylglycine aqueous solution. And the NMR results show agreement with the MD simulations. All-atom MD simulations and NMR spectra are successful in revealing the structures and interactions in the N-glycylglycine-water mixtures.

Light Simplified Millet Production Technique Adopting Film Mulching and Hole Sowing

In order to solve the problem that dry-land foxtail millet production completely relies on rainwater with low instable yield and tedious cultivation, Millet Research Institute of Hebei Academy of Agriculture and Forestry Sciences integrated a light simplified production technique integrating film mulching, hole sowing and fertilization with mechanized production, forming the light simplified foxtail millet production technique adopting film mulching and hole sowing. This study introduced the light simplified foxtail millet production technique adopting film mulching and hole sowing, including main links such as preparation before sowing, sowing, attached agricultural machines, field management, harvest and residual film recovery.

Structures and Intermolecular Interactions in Dimethyl Sulfoxide-Water System Studied by All-atom Molecular Simulations

An all-atom dimethyl sulfoxide （DMSO） and water model have been used for molecular dynamics simulation. The NMR and IR spectra are also performed to study the structures and interactions in the DMSO-water system. And there are traditional strong hydrogen bonds and weak C-H- ~ ~ O contacts existing in the mixtures according to the analysis of the radial distribution functions. The insight structures in the DMSO-water mixtures can be classified into different regions by the analysis of the hydrogen-bonding network. Interestingly, the molar fraction of DMSO 0.35 is found to be a special concentration by the network. It is the transitional region which is from the water rich region to the DMSO rich region. The stable aggregates of （DMSO）m＇S=O…… HW-OW-（H20）n might play a key role in this region. Moreover, the simulation is compared with the chemical shifts in NMR and wavenumbers in IR with concentration dependence. And the statistical results of the average number hydrogen bonds in the MD simulations are in agreement with the experiment data in NMR and IR spectra.

The Submanifolds with Parallel Mean Curvature Vector in a Locally Symmetric and Conformally Flat Riemannian Manifold

In the present paper we obtain the following result: Theorem Let M^R be a compact submanifold with parallel mean curvature vector in a locally symmetric and conformally flat Riemannian manifold N^(n+p)(p>1). If then M^n lies in a totally geodesic submanifold N^(n+1).

The FDTD Full Wave Analysis of Fractal Antennas

The full wave FDTD method was used to analyze the Hilbert and H fractal curves antennas. The computational results of the input impedance of Hilbert fractal antenna are in good agreement with the experiments in the documents. The results also show that the self-similarity of the fractal structure leads to the multiplicity of resonances over some predetermined operating bandwidths of the antenna. Fractal geometries of Hilbert and H curves can be implemented to miniaturize the antenna, too. The results also show that the higher order fractal antenna leads to the more efficient reduction of the antenna size than the lower order one. Furthermore, the far field patterns remain almost the same as those of the dipole at their own resonant frequencies.

Construction and Quality Analysis of Full-length cDNA Library of Phyllostachys heterocycla Germinating Seeds

[Objective] This study aimed to construct the full-length cDNA library for ger- minating seeds of Phyllostachys heterocycla [Method] Germinating seeds of P. hetero- cycla were used as experimental materials to construct the full-length cDNA library by using Oligo-capping method. [Result] The constructed library has a total capacity of 6.5×10^6 recombinant clones, and a low proportion of clones without inserted frag- ments; the size of inserted fragments ranges between 0.3-5.0 kb, with strict classifi- cation and ideal consistency. Furthermore, the proportion of clones harboring long in- serted fragments （1.0-5.0 kb） is as high as 30%, achieving the standard for high- quality full-length cDNA library. [Conclusion] The full-length cDNA library of germinat- ing seeds of P. heterocycla was successfully constructed, which laid important foun- dation for the functional genomics research of bamboo plants.