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Structural Evolution and Electronic Properties of Au2Gen-/0（n=1-8） Clusters: Anion Photoelectron Spectroscopy and Theoretical Calculations

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Chinese Journal of Chemical Physics 2019年第2期32卷 229-240,I0003页

作者： Sheng-Jie Lu Hong-Guang xu xi-ling xu Wei-Jun Zheng Department of Chemistry and Chemical Engineering Heze University Heze 274015 China Beijing National Laboratory for Molecular Sciences State Key Laboratory of Molecular Reaction Dynamics Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China Department of Chemistry COMSATS University Islamabad Abbottabad-Campus Pakistan University of Chinese Academy of Sciences Beijing 100049 China

Investigating the structures and properties of Au-Ge mixed clusters can give insight into the microscopic mechanisms in gold-catalyzed Ge films and can also provide valuable information for the production of germanium-based functional materials. In this work, size-selected anion photoelectron spectroscopy and theoretical calculations were used to explore the structural evolution and electronic properties of Au2Gen^-/0 (n=1-8) clusters. It is found that the two Au atoms in Au2Gen^-/0 (n=1-8) showed high coordination numbers and weak aurophilic interactions. The global minima of Au2Gen- anions and Au2Gen neutrals are in spin doublet and singlet states, respectively. Au2Gen- anions and Au2Gen neutrals showed similar structural features, except for Au2Ge4^-/0 and Au2Ge5^-/0. The C2v symmetric V-shaped structure is observed for Au2Ge1^-/0, while Au2Ge2^-/0 has a C2v symmetric dibridged structure. Au2Ge3^-/0 can be viewed as the two Au atoms attached to different Ge-Ge bonds of Ge3 triangle. Au2Ge4- has two Au atoms edge-capping Ge4 tetrahedron, while Au2Ge4 neutral adopts a C2v symmetric double Au atoms face-capping Ge4 rhombus. Au2Ge5-8^-/0 show triangular, tetragonal, and pentagonal prism-based geometries. Au2Ge6 adopts a C2v symmetric tetragonal prism structure and exhibits σ plus π double bonding characters.

关键词： Photoelectron spectroscopy Transition metal Germanium cluster Structural evolution Quantum chemical calculations

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Anion Photoelectron Spectroscopy and Density Functional Theory Studies of AuC_(n)^(-/0)(n=3-8):Odd-Even Alternation in Electron Binding Energies and Structures

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Chinese Journal of Chemical Physics 2022年第1期35卷 177-184,I0035-I0040,I0064页

作者： Peng Wang Shuai-Ting Yan Hong-Guang xu xi-ling xu Wei-Jun Zheng Beijing National Laboratory for Molecular Sciences State Key Laboratory of Molecular Reaction DynamicsInstitute of ChemistryChinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100049China

We measured the photoelectron spectra of AuC_(n)^(-)(n=3-8)and conducted theoretical study on the structures and properties of AuC_(n)^(-/0)(n=3-8).It is found that the photoelectron spectra of AuC_(n)^(-)exhibit odd-even *** spectral features of AuC_(3)^(-),AuC_(5)^(-),and AuC_(7)^(-)are much broader than those of AuC_(4)^(-),AuC_(6)^(-),and AuC_(5)^(-).The vertical detachment energies of AuC_(3)^(-),AuC_(5)^(-),and AuC_(7)^(-)are lower than those of AuC_(4)^(-),AuC_(6)^(-),and AuCs_(8)^(-).The most stable structures of AuC_(n)^(-)(n=3-8)are chain *** most stable structures of neutral AuC_(n)(n=3-8)are linear structures except that those of AuC_(3) and AuC_(5) are slightly *** calculated∠AuCC angles,Au-C bond lengths,and the charges on Au atom also show odd-even alternations,consistent with the experimental observations.

关键词： Gold carbides Photoelectron spectroscopy Density functional theory Odd-even alternation

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Structural and Bonding Properties of Al_(n)C_(4)^(−/0)(n=2−4)Clusters:Anion Photoelectron Spectroscopy and Theoretical Calculations

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Chinese Journal of Chemical Physics 2021年第6期34卷 769-776,I0002,I0003,I0053-I0055页

作者： Chao-jiang Zhang Shuai-ting Yan Hong-guang xu xi-ling xu Wei-jun Zheng Beijing National Laboratory for Molecular Sciences(BNLMS) State Key Laboratory of Molecular Reaction DynamicsInstitute of ChemistryChinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100049China

We measured the photoelectron spectra of Al_(n)C_(4)^(−)(n=2−4)clusters by using size-selected anion photoelectron *** structures of Al_(n)C_(4)^(−/0)(n=2−4)clusters were explored with quantum chemistry calculations and were determined by comparing the theoretical results with the experimental *** is found that the most stable structure of Al_(2)C_(4)^(−) anion is a C_(2v)symmetry planar structure with two Al atoms interacting with two C_(2)*** addition,Al_(2)C_(4)^(−) anion also has a D∞h symmetry linear structure with two Al atoms located at the two ends of a C_(4)chain,which is slightly higher in energy than the planar *** most stable structure of neutral Al_(2)C_(4)has a D∞h symmetry linear *** most stable structure of Al_(3)C_(4)^(−) anion is a planar structure with three Al atoms interacting with two C_(2)*** neutral Al_(3)C_(4)cluster has a C_(2v)symmetric V-shaped bent *** global minima structures of both Al_(4)C_(4)^(−) and neutral Al_(4)C_(4)are C_(2)h symmetry planar structures with four Al atoms interacting with the ends of two C_(2)*** natural density partitioning analyses of Al_(n)C_(4)^(−)(n=2−4)clusters show that the interactions between the Al atoms and C_(2)units have bothσandπcharacters.

关键词： Anion photoelectron spectroscopy Quantum chemistry calculations Planar aluminum-carbon structures

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城市峡谷环境下GNSS卫星可见性快速预测方法

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北京理工大学学报 2017年第6期37卷 595-601页

作者：蔡熙刘松林许承东北京理工大学宇航学院北京100081 解放军信息工程大学导航与空天目标工程学院河南郑州450001

城市峡谷环境下全球导航卫星系统(GNSS)性能显著下降,通过建立三维城市模型来预测卫星的可见性是该环境下进行GNSS性能分析最为常见的方法之一.为解决三维城市模型数据量大,使得卫星可见性预测计算消耗大量时间的问题,提出了一种快速预... 详细信息

城市峡谷环境下全球导航卫星系统(GNSS)性能显著下降,通过建立三维城市模型来预测卫星的可见性是该环境下进行GNSS性能分析最为常见的方法之一.为解决三维城市模型数据量大,使得卫星可见性预测计算消耗大量时间的问题,提出了一种快速预测城市中建筑是否遮挡卫星信号的方法.该方法通过分析三角面元的法向量方向、三角面元与用户的相对位置关系以及历史遮挡关系,减少了计算量并缩短了计算时间.仿真结果表明,该方法的相交判断计算次数为传统方法的7.21%,消耗的总计算时间为传统方法的22.38%,平均相对误差为1.89%.该方法具备计算效率高、准确性高的优点.

关键词：城市峡谷全球卫星导航系统(GNsS) 可见性三维城市模型

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LaCu_(2)O_(n)^(-/0)(n=4,5)团簇的负离子光电子能谱和量子化学计算:氧单元与LaCu_(2)O_(3)六元环的相互作用

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Chinese Journal of Chemical Physics 2024年第2期37卷 313-320,I0005-I0009,I0103,I0104页

作者：闫帅廷徐西玲许洪光郑卫军中国科学院化学研究所分子科学国家研究中心分子反应动力学实验室北京100190 中国科学院大学北京100049

本文采用负离子光电子能谱实验与理论计算相结合对-铜氧化物团簇LaCu_(2)O_(n-/0)(n=4,5)进行研究,测得LaCu_(2)O_(4)^(-)和LaCu_(2)O_(5)^(-)电子垂直脱附能的实验值分别为3.70和3.79eV.理论计算表明,LaCu_(2)O_(4),5-团簇的基态最稳定结构均以一个LaCu_(2)O_(3)六元环结构为主体,再由一个额外的氧原子或超氧单元与其中的镧原子结合.在LaCu_(2)O_(4)^(-)团簇中,外接的氧原子与LaCu_(2)O_(3)六元环结构之间主要呈现出共价相互作用.而在LaCu_(2)O_(5)^(-)团簇中,超氧单元与LaCu_(2)O_(3)六元环之间存在以诱导力为主导的弱相互作用.

关键词：量子化学计算光电子能谱尺寸选择

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屈光不正性弱视患儿PVEP检测结果的相关性分析

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国际眼科杂志 2015年第9期15卷 1618-1620页

作者：张学印徐西玲贾红艳中国山东省威海市立第二医院眼科

目的：分析年龄对屈光不正性弱视患儿PVEP检测结果的影响及其相关性。方法：选择我院眼科2012-06/2014-06收治的136例272眼屈光不正性弱视患儿为研究对象,按弱视严重程度（BCVA≥0.5,0.3≤BCVA〈0.5,BCVA〈0.3）分为轻、中、重度三组,... 详细信息

目的：分析年龄对屈光不正性弱视患儿PVEP检测结果的影响及其相关性。方法：选择我院眼科2012-06/2014-06收治的136例272眼屈光不正性弱视患儿为研究对象,按弱视严重程度（BCVA≥0.5,0.3≤BCVA〈0.5,BCVA〈0.3）分为轻、中、重度三组,每组又分为〈6岁和≥6岁两类。运用PVEP检测各组的LP100及AP100,对比组间差异;将入选患儿按年龄细分为：4-〈6岁、6-〈8岁、8-〈10岁、≥10岁四个年龄段,以BCVA为因变量,建立包含年龄、等效球镜度、性别、弱视类型的Logistic多因素回归模型,分析年龄与弱视诊断的相关性。结果：LP100：轻度组〈中度组〈重度组,三组差异有统计学意义（F=135.22,P〈0.01）;AP100：轻度组〉中度组〉重度组,差异显著（F=16.74,P=0.007）;轻度、中度、重度弱视组内,〈6岁组与≥6岁组比较,LP100显著低（t=8.36、5.37、2.48,P=0.00、0.00、0.02）,AP100显著高（t=6.76、4.88、2.85,P=0.00、0.00、0.01）;年龄与弱视诊断的独立相关（P〈0.01,95%CI：0.714-0.785）。结论：年龄是屈光不正性弱视诊断的独立相关因素,同一视力水平在不同年龄段所代表的视功能意义不同,在衡量儿童弱视严重程度时,应对不同年龄段儿童采取不同标准。

关键词：弱视矫正视力诱发电位儿童年龄屈光不正

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EZH2-dependent myelination following sciatic nerve injury

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Neural Regeneration Research 2025年第8期20卷 2382-2394页

作者： Hui Zhu Li Mu xi xu Tianyi Huang Ying Wang Siyuan xu Yiting Wang Wencong Wang Zhiping Wang Hongkui Wang Chengbin xue Research Center of Clinical Medicine Affiliated Hospital of Nantong UniversityKey Laboratory of Neuroregeneration of Jiangsu and Ministry of EducationCo-innovation Center of NeuroregenerationNMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology ProductsNantong UniversityNantongJiangsu ProvinceChina Medical School of Nantong University NantongJiangsu ProvinceChina Department of Neurology Affiliated Hospital of Nantong UniversityNantongJiangsu ProvinceChina Department of Rehabilitation Medicine Affiliated Hospital of Nantong UniversityNantongJiangsu ProvinceChina Department of Critical Care Medicine Nantong Fourth People’s HospitalNantongJiangsu ProvinceChina

Demyelination and remyelination have been major focal points in the study of peripheral nerve regeneration following peripheral nerve ***,the gene regulatory network of regenerated myelin differs from that of native *** of enhancer of zeste homolog 2(EZH2)hinders the differentiation,maturation,and myelination of Schwann cells in *** further determine the role of EZH2 in myelination and recovery post-peripheral nerve injury,conditional knockout mice lacking Ezh2 in Schwann cells(Ezh2^(fl/fl);Dhh-Cre and Ezh2^(fl/fl);Mpz-Cre)were *** results show that a significant proportion of axons in the sciatic nerve of Ezh2-depleted mice remain *** highlights the crucial role of Ezh2 in initiating Schwann cell ***,we observed that 21 days after inducing a sciatic nerve crush injury in these mice,most axons had remyelinated at the injury site in the control nerve,while Ezh2^(fl/fl);Mpz-Cre mice had significantly fewer remyelinated axons compared with their wild-type *** suggests that the absence of Ezh2 in Schwann cells impairs myelin formation and *** conclusion,EZH2 has emerged as a pivotal regulatory factor in the process of demyelination and myelin regeneration following peripheral nerve *** EZH2 activity during these processes may offer a promising therapeutic target for the treatment of peripheral nerve injuries.

关键词： demyelination EZH2 myelination peripheral nerve injury PRC2 remyelination Schwann cells sciatic nerve crush sciatic nerve transection

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Smart Cellulose‑Based Janus Fabrics with Switchable Liquid Transportation for Personal Moisture and Thermal Management

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Nano-Micro Letters 2025年第1期17卷 333-347页

作者： Jianfeng xi Yanling Lou Liucheng Meng Chao Deng Youlu Chu Zhaoyang xu Huining xiao Weibing Wu Jiangsu Co‑Innovation Center of Efficient Processing and Utilization of Forest Resources International Innovation Center for Forest Chemicals and MaterialsJiangsu Provincial Key Lab of Sustainable Pulp and Paper Technology and Biomass MaterialsNanjing Forestry UniversityNanjing 210037People’s Republic of China College of Materials Science and Engineering Nanjing Forestry UniversityNanjing 210037People’s Republic of China Department of Chemical Engineering University of New BrunswickFrederictonNB E3B 5A3Canada Macromolecular Chemistry and Bavarian Polymer Institute University of BayreuthBayreuth 95440Germany

The Janus fabrics designed for personal moisture/thermal regulation have garnered significant attention for their potential to enhance human ***,the development of smart and dynamic fabrics capable of managing personal moisture/thermal comfort in response to changing external environments remains a ***,a smart cellulose-based Janus fabric was designed to dynamically manage personal moisture/*** cotton fabric was grafted with N-isopropylacrylamide to construct a temperature-stimulated transport ***,hydrophobic ethyl cellulose and hydrophilic cellulose nanofiber were sprayed on the bottom and top sides of the fabric to obtain wettability *** fabric exhibits anti-gravity directional liquid transportation from hydrophobic side to hydrophilic side,and can dynamically and continuously control the transportation time in a wide range of 3–66 s as the temperature increases from 10 to 40℃.This smart fabric can quickly dissipate heat at high temperatures,while at low temperatures,it can slow down the heat dissipation rate and prevent the human from becoming too *** addition,the fabric has UV shielding and photodynamic antibacterial properties through depositing graphitic carbon nitride nanosheets on the hydrophilic *** smart fabric offers an innovative approach to maximizing personal comfort in environments with significant temperature variations.

关键词： Directional water transport Cotton fabric Anti-gravity directional liquid transportation Janus wettability

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Regulation and function of endoplasmic reticulum autophagy in neurodegenerative diseases

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Neural Regeneration Research 2025年第1期20卷 6-20页

作者： xiu-Yun Zhao De-En xu Ming-Lei Wu Ji-Chuan Liu Zi-ling Shi Quan-Hong Ma Department of Neurology and Clinical Research Center of Neurological Disease the Second Affiliated Hospital of Soochow UniversitySuzhouJiangsu ProvinceChina Institute of Neuroscience&Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases Soochow UniversitySuzhouJiangsu ProvinceChina Department of Neurology Jiangnan University Medical CenterWuxiJiangsu ProvinceChina

The endoplasmic reticulum,a key cellular organelle,regulates a wide variety of cellular *** reticulum autophagy,one of the quality control systems of the endoplasmic reticulum,plays a pivotal role in maintaining endoplasmic reticulum homeostasis by controlling endoplasmic reticulum turnover,remodeling,and *** this review,we briefly describe the endoplasmic reticulum quality control system,and subsequently focus on the role of endoplasmic reticulum autophagy,emphasizing the spatial and temporal mechanisms underlying the regulation of endoplasmic reticulum autophagy according to cellular *** also summarize the evidence relating to how defective or abnormal endoplasmic reticulum autophagy contributes to the pathogenesis of neurodegenerative *** summary,this review highlights the mechanisms associated with the regulation of endoplasmic reticulum autophagy and how they influence the pathophysiology of degenerative nerve *** review would help researchers to understand the roles and regulatory mechanisms of endoplasmic reticulum-phagy in neurodegenerative disorders.

关键词： autophagy endoplasmic reticulum endoplasmic reticulum autophagy endoplasmic reticulum quality control system endoplasmic reticulum receptors endoplasmic reticulum-associated degradation neurodegeneration neurodegenerative disease selective autophagy unfolded protein response

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Tranylcypromine upregulates Sestrin 2 expression to ameliorate NLRP3-related noise-induced hearing loss

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Neural Regeneration Research 2025年第5期20卷 1483-1494页

作者： xihang Chen Zhifeng Chen Menghua Li Weiwei Guo Shuolong Yuan Liangwei xu Chang Lin xi Shi Wei Chen Shiming Yang Senior Department of Otolaryngology Head and Neck Surgery Chinese PLA General HospitalChinese PLA Medical SchoolBeijingChina State Key Laboratory of Hearing and Balance Science BeijingChina National Clinical Research Center for Otolaryngologic Diseases BeijingChina Key Laboratory of Hearing Science Ministry of EducationBeijingChina Beijing Key Laboratory of Hearing Impairment Prevention and Treatment BeijingChina Department of Otorhinolaryngology Head and Neck Surgery The First Affiliated Hospital of Fujian Medical UniversityFuzhouFujian ProvinceChina Department of Otolaryngology Head and Neck Surgery The 940th Hospital of Joint Logistics Support Force of Chinese PLALanzhouGansu ProvinceChina Key Laboratory of Tropical Biological Resources of Ministry of Education School of Pharmaceutical SciencesHainan UniversityHaikouHainan ProvinceChina Academician Workstation of Hainan University School of Pharmaceutical SciencesYazhou BaySanyaHainan ProvinceChina

Noise-induced hearing loss is the primary non-genetic factor contributing to auditory ***,there are currently no effective pharmacological interventions for patients with noise-induced hearing ***,we present evidence suggesting that the lysine-specific demethylase 1 inhibitor–tranylcypromine is an otoprotective agent that could be used to treat noise-induced hearing loss,and elucidate its underlying regulatory *** established a mouse model of permanent threshold shift hearing loss by exposing the mice to white broadband noise at a sound pressure level of 120 d B for 4 *** found that tranylcypromine treatment led to the upregulation of Sestrin2(SESN2)and activation of the autophagy markers light chain 3B and lysosome-associated membrane glycoprotein 1 in the cochleae of mice treated with *** noise exposure group treated with tranylcypromine showed significantly lower average auditory brainstem response hearing thresholds at click,4,8,and 16 k Hz frequencies compared with the noise exposure group treated with *** findings indicate that tranylcypromine treatment resulted in increased SESN2,light chain 3B,and lysosome-associated membrane glycoprotein 1 expression after noise exposure,leading to a reduction in levels of 4-hydroxynonenal and cleaved caspase-3,thereby reducing noise-induced hair cell ***,immunoblot analysis demonstrated that treatment with tranylcypromine upregulated SESN2 expression via the autophagy *** treatment also reduced the production of NOD-like receptor family pyrin domaincontaining 3(NLRP3)*** conclusion,our results showed that tranylcypromine treatment ameliorated cochlear inflammation by promoting the expression of SESN2,which induced autophagy,thereby restricting NLRP3-related inflammasome signaling,alleviating cochlear hair cell loss,and protecting hearing *** findings suggest that inhibiting lysine-specific demethylase 1 is a

关键词： 4-hydroxynonenal apoptosis autophagy cleaved caspase-3 inflammation NOD-like receptor family pyrin domain-containing 3(NLRP3) noise-induced hearing loss oxidative stress Sestrin2 tranylcypromine

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