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Universal design of three-dimensional porous graphene-iron based promotors for kinetically rationalized lithium-sulfur chemistry

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Journal of Energy Chemistry 2025年第1期100卷 192-200页

作者： hua gao Yunfeng Zhang Menglei Wang Ruoxuan Yang Shuai Feng Xuan Cao Yaping Zhang Zhongyuan Lu Yingze Song State Key Laboratory of Environment-Friendly Energy Materials School of Materials and ChemistrySouthwest University of Science and TechnologyMianyang 621010SichuanChina School of Material Science and Engineering Henan University of TechnologyZhengzhou 450001HenanChina College of Chemistry and Chemical Engineering Taishan UniversityTai’an 271021ShandongChina

Lithium-sulfur(Li-S)batteries are widely deemed to be one of the most potential candidates for future secondary batteries because of their remarkable energy ***,notorious polysulfide shuttling and retarded sulfur reaction kinetics pose significant obstacles to the further application of Li-S *** rationally designed highly active electrocatalysts can facilitate polysulfide conversion,the universal and scalable synthesis strategies need to be ***,a universal synthetic strategy to construct a series of three-dimensional(3D)porous graphene-iron(3DGr-Fe)based electrocatalysts involving 3DGr-FeP,3DGr-Fe_(3)C,and 3DGr-Fe_(3)Se_(4)is exploited for manipulating the Li-S redox *** has been observed that the implementation of a 3D porous Gr architecture leads to the well-designed conductive networks,while the uniformly dispersed iron nanoparticles introduce an abundance of active sites,fostering the lithium polysulfide conversion,thereby bolstering the overall electrochemical *** Li-S battery with the 3DGr-Fe based electrocatalyst exhibits remarkable capacity retention of 94.8%upon 100 times at 0.2 ***,the soft-packaged Li-S pouch cell based on such a 3DGr-Fe electrocatalyst delivers superior capacity of 1060.71 mA h g^(-1)and guarantees for the continuous 30 min work of fan *** investigation gives comprehensive insights into the design,synthesis,and mechanism of 3DGr-Fe based electrocatalysts with high activity toward efficient and durable Li-S batteries.

关键词： Lithium-sulfur battery Universal synthesis 3D graphene-iron based promotor Electrocatalysis

Clinical manifestation and management of severe blepharokeratoconjunctivitis combined with corneal perforation

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International Journal of Ophthalmology(English edition) 2025年第2期18卷 229-236页

作者： Xu Li Ping Hou Xiao-Lin Qi Su-Xia Li Wei-Yun Shi hua gao Ting Zhang Eye Hospital of Shandong First Medical University Jinan 250021Shandong ProvinceChina State Key Laboratory Cultivation Base Shandong Provincial Key Laboratory of OphthalmologyEye Institute of Shandong First Medical UniversityQingdao 266071Shandong ProvinceChina School of Ophthalmology Shandong First Medical UniversityJinan 250117Shandong ProvinceChina Shandong Provincial Third Hospital Jinan 250031Shandong ProvinceChina

AIM:To investigate the clinical signs of blepharokeratoconjunctivitis(BKC)and evaluate the efficacy of penetrating keratoplasty(PKP)for the ***:Sixteen patients(16 eyes)with BKC complicated by corneal perforation hospitalised at Shandong Eye Hospital were retrospectively *** patients received *** were assessed for symptoms,clinical manifestations,the activity and damage grading of BKC.A paired t-test was used to compare the uncorrected visual acuity(UCVA)before and after surgery for the perforated ***:The mean age of the patients was *** vision is the most common discomfort,followed by redness,and then *** duration of ocular discomfort lasted for 3.2y,on ***(18.8%)participants were associated with rosacea,while 11(68.8%)patients had recurrent chalazion or *** in eyelash follicles was positive in 11(68.8%)*** corneal perforations were≤3.0 mm in *** perforation was located mainly in the inferior cornea(68.8%).The mean area of corneal vascularisation was 3.0 *** patients manifested bilateral BKC,with the perforated eyes ranked as severely damaged and presenting with severe *** contralateral eyes manifested mild damage with no active ***(68.8%)of the perforated eyes were treated with PKP using a minimal *** UCVA increased significantly at the final follow-up(mean,21mo;P<0.001),with the manifestation of BKC alleviated *** of the patients developed immune rejection or other serious ***:BKC combined with corneal perforation occurs mainly among young people with a long history of ocular ***,especially using a minimal graft,is an effective and safe option for treating the disease.

关键词： blepharokeratoconjunctivitis corneal perforation penetrating keratoplasty

从虚拟类同到合预期性：自然会话与自媒体中的“也是”

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当代修辞学 2025年第1期 40-51页

作者：高华刘丹青深圳大学外国语学院深圳大学人文学院

关于副词“也”从表示类同的基本语义如何发展出表示强调、委婉等语气已有诸多研究。我们留意到在一类自媒体语言中“也”与“是”融合发生词汇化，频繁用于讲述和评价，属于目前“也”字研究中各种定性都无法覆盖的用法。本文从互动语... 详细信息

关于副词“也”从表示类同的基本语义如何发展出表示强调、委婉等语气已有诸多研究。我们留意到在一类自媒体语言中“也”与“是”融合发生词汇化，频繁用于讲述和评价，属于目前“也”字研究中各种定性都无法覆盖的用法。本文从互动语言学的视角探析此形式在短视频解说话语中的用法和功能，并与自然会话中“也是”的分布和使用进行比较。我们认为，“也是”词汇化是“也”和“是”各自功能扩展的结合。语气副词“也(是)”的核心语义是“虚拟类同”,在语用中产生“合预期”义，互动功能上有助于听话人接受、认同说话人的观点，从而协调互动双方的立场。本文还就语料中“也是”和“也”的可互换性差别进行了讨论。

关键词： “也是” 虚拟类同预期互动自媒体

Membership determination of open cluster NGC 188 based on the DBSCAN clustering algorithm

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Research in Astronomy and Astrophysics 2014年第2期14卷 159-164页

作者： Xin-hua gao School of Information Science and Engineering Changzhou University

High-precision proper motions and radial velocities of 1046 stars are used to determine member stars using three-dimensional （3D） kinematics for open clus- ter NGC 188 based on the density-based spatial clustering of applications with noise （DBSCAN） clustering algorithm. By implementing this algorithm, 472 member stars in the cluster are obtained with 3D kinematics. The color-magnitude diagram （CMD） of the 472 member stars using 3D kinematics shows a well-defined main sequence and a red giant branch, which indicate that the DBSCAN clustering algorithm is very effective for membership determination. The DBSCAN clustering algorithm can ef- fectively select probable member stars in 3D kinematic space without any assumption about the distribution of the cluster or field stars. Analysis results show that the CMD of member stars is significantly clearer than the one based on 2D kinematics, which al- lows us to better constrain the cluster members and estimate their physical parameters. Using the 472 member stars, the average absolute proper motion and radial velocity are determined to be （PMα, PMδ） = （-2.58 ± 0.22, ＋0.17 ± 0.18） mas yr-1 and Vr = -42.35 ± 0.05 km s-1, respectively. Our values are in good agreement with values derived by other authors.

关键词： Galaxy: open clusters and associations: individual (NGC 188) -- stars:kinematics -- Hertzsprung-Russell diagram -- techniques: radial velocities

An application of the KNND method for detecting nearby open clusters based on Gaia-DR1

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Research in Astronomy and Astrophysics 2017年第6期17卷 89-94页

作者： Xin-hua gao School of Information Science and Engineering Changzhou University Changzhou 213164 China

This paper presents a preliminary test of the k-th nearest neighbor distance （KNND） method for detecting nearby open clusters based on Gaia-DR1. We select 38 386 nearby stars （〈 100 pc） from the Gaia-DR1 catalog, and then use the KNND method to detect overdense regions in three-dimensional space. We find two overdense regions （the Hyades and Coma Berenices （Coma Ber） open clusters）, and obtain 57 reliable cluster members. Based on these cluster members, the distances to the Hyades and Coma Ber clusters are determined to be 46.0±0.2 and 83.5±0.3 pc, respectively. Our results demonstrate that the KNND method can be used to detect open clusters based on a large volume of astrometry data.

关键词： open clusters and associations individual (Hyades, Coma Ber) - astrometry- parallaxes- stars distances

An application of the k-th nearest neighbor method to open cluster membership determination

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Research in Astronomy and Astrophysics 2016年第12期16卷 46-50页

作者： Xin-hua gao School of Information Science and Engineering Changzhou University

We introduce a non-parametric method for open cluster membership determination in threedimensional（3D） velocity space（proper motion and radial velocity）. Clean 3D cluster members can be obtained by statistically analyzing the Euclidean distance between each star and its k-th nearest neighbor in3 D velocity space. We use 513 sample stars in the direction of open cluster M67 to construct a 3D velocity space and test our method; 291 3D cluster members are obtained. The color-magnitude diagram, proper motions, radial velocities and spatial distribution of these 3D cluster members demonstrate the effectiveness of our method. From the 291 3D cluster members, the mean radial velocity and absolute proper motion of M67 are Vr = ＋33.46 ± 0.05 km s-1and（PMRA, PMDEC） =（-7.64 ± 0.07,-5.98 ± 0.07） mas yr-1,respectively. In addition, we use 640 sample stars with precise proper motions and radial velocities in the direction of open cluster NGC 188 to test our method. The test results also show that our method is effective.

关键词： open clusters and associations: individual (M67)-- Hertzsprung-Russell and C-M diagrams--stars: kinematics and dynamics

MODIFIED BERNOULLI ITERATION METHODS FOR QUADRATIC MATRIX EQUATION

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Journal of Computational Mathematics 2007年第5期25卷 498-511页

作者： Zhong-Zhi Bai Yong-hua gao LSEC ICMSEC Academy of Mathematics and System Sciences Chinese Academy of Sciences Beijing 100080 China

We construct a modified Bernoulli iteration method for solving the quadratic matrix equation AX^2 ＋ BX ＋ C = 0, where A, B and C are square matrices. This method is motivated from the Gauss-Seidel iteration for solving linear systems and the ShermanMorrison-Woodbury formula for updating matrices. Under suitable conditions, we prove the local linear convergence of the new method. An algorithm is presented to find the solution of the quadratic matrix equation and some numerical results are given to show the feasibility and the effectiveness of the algorithm. In addition, we also describe and analyze the block version of the modified Bernoulli iteration method.

关键词： Quadratic matrix equation Quadratic eigenvalue problem Solvent Bernoulli's iteration Newton's method Local convergence.

新质生产力视域下智慧交通大数据应用人才培养探究

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晋城职业技术学院学报 2025年第1期18卷 27-31页

作者：高华张勇敢浙江交通职业技术学院智慧交通学院中国杭州311112

智慧交通大数据分析与应用是交通领域新质化发展的重要途径。基于对智慧交通大数据应用岗位技能型人才的需求分析,提出首先树立“德才并重、学科交叉、注重创新”的人才培养理念,并通过完善课程体系、强化产教融合提升人才培养质量,以... 详细信息

智慧交通大数据分析与应用是交通领域新质化发展的重要途径。基于对智慧交通大数据应用岗位技能型人才的需求分析,提出首先树立“德才并重、学科交叉、注重创新”的人才培养理念,并通过完善课程体系、强化产教融合提升人才培养质量,以期能够为智慧交通大数据技术应用技能型人才培养提供借鉴和参考。

关键词：新质生产力智慧交通大数据应用技术技能人才培养模式探索

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Kinematic and chemical properties of five open clusters based on SDSS DR7

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Research in Astronomy and Astrophysics 2010年第8期10卷 761-776页

作者： Xin-hua gao Li Chen Key Laboratory for Research in Galaxies and Cosmology Shanghai Astronomical Observatory Chinese Academy of Sciences Shanghai 200030 China Graduate University of Chinese Academy of Sciences Beijing 100049 China Key Laboratory for Astrophysics Shanghai 200234 China

We present metallicities and radial velocities for five old open clusters （NGC 6791, NGC 2420, NGC 2682, NGC 2158, and NGC 7789） using data from the seventh public data release of the Sloan Digital Sky Survey （SDSS）, which includes the directed stellar program SEGUE： Sloan Extension For Galactic Understanding and Exploration. The radial velocities are used to calculate cluster membership probabilities for stars in each cluster region. NGC 6791, NGC 2420, NGC 2682, NGC 2158 and NGC 7789 are found to have mean metallicities [Fe/H]= ＋0.08 ± 0.09, -0.38± 0.11, -0.08±0.05, -0.41 ±0.13 and -0.19 ± 0.13 dex （s.d.）, respectively. The mean radial velocities for NGC 6791, NGC 2420, NGC 2682, NGC 2158 and NGC 7789 are Vr = -45.9 ± 0.2, ＋76.1 ± 0.2, ＋35.0 ± 0.2, ＋26.9 ± 0.2 and -48.2± 0.2 km s^-1（s.e.m.）, respectively. We have compared our results with the values from literatures, and found that our metallicity of NGC 6791 is significantly underestimated （by about 0.3 dex） and our radial velocities of the open clusters agree well with the values derived using high-resolution spectroscopy.

关键词： open clusters and associations general -- open clusters and associations individual (NGC 6791, NGC 2420, NGC 2682, NGC 2158, NGC 7789)