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Syntheses and Crystal Structures of Zinc(II) and Nickel(II) Complexes Involving Reduced Nitroxide Radicals

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Chinese Journal of Structural Chemistry 2006年第2期25卷 209-213页

作者： JIANG Kai chang Jiu-li WANG li-Ya WANG Yu-fang MA Lu-fang College of Chemistry and Environmental Science Henan Normal University Xinxiang 453002 China Department of Chemistry Luoyang Normal University Luoyang 471022 China

Two novel complexes [Zn（Him-thz）2（NO3）]·NO3 1 and [Ni（Him-thz）2（NO3）]·NO3 2 （Him-thz = 2-（2＇-thiazole）-4,4,5,5-teramethyl-dihydro-1H-imidazolyl-1-hydroxy） have been prepared and structurally characterized by X-ray diffraction method. Both complexes crystallize in orthorho- mbic, space group P21 21 2, Z = 2. Crystal data for 1： ZnC20H30N8O8S2, Mr = 640.2, a = 13.1630（14）, b = 10.5149（11）, c = 10.6670（11） A°, V= 1476.4（3）A°^3, Dc = 1.440 g/cm^3, μ（MoKa） = 1.028 mm^-1, F（000） = 664, R = 0.0398 and wR = 0.0901 for 2131 observed reflections with I 〉 2σ（I）. Crystal data for 2： NiC20H30N8O8S2, Mr = 633.36, a = 13.1611（7）, b = 10.4833（6）, c = 10.6928（6） .4,, V = 1475.30（14）A°^3, Dc = 1.426 g/cm^3 ,μ（MoKa） = 0.854 mm^-1, F（000） = 660, R = 0.0281 and wR = 0.0797 for 3099 observed reflections with I 〉 2σ（I）. X-ray analysis reveals that the crystal structures consist of [M（Him-thz）2（NO3）]^＋（M = Zn, Ni） moiety and a NO3^- anion. Both Zinc（Ⅱ） and Nickel（Ⅱ） ions are six-coordinated with distorted octahedral geometries.

关键词： crystal structure nitronyl nitroxide radical Zn(Ⅱ) complex Ni(Ⅱ) complex

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数字化技术辅助牙隐裂检测研究进展

中国实用口腔科杂志 2024年第6期17卷 722-726,732页

作者：张艾頔曾涵柔李长芳王玮口颌系统重建与再生全国重点实验室国家口腔疾病临床医学研究中心陕西省口腔医学重点实验室空军军医大学口腔医院牙体牙髓病科陕西西安710032 西北工业大学生命学院陕西西安710072

牙隐裂是继龋病和牙周病之后成年人后牙缺失的第三大病因。由于目前传统的检测技术和检测仪器精准度不高,易造成漏诊、误诊而耽误最佳治疗时间,早发现、早诊断对于隐裂牙的存留尤为关键。随着数字化技术在口腔医学领域的广泛应用,牙隐... 详细信息

牙隐裂是继龋病和牙周病之后成年人后牙缺失的第三大病因。由于目前传统的检测技术和检测仪器精准度不高,易造成漏诊、误诊而耽误最佳治疗时间,早发现、早诊断对于隐裂牙的存留尤为关键。随着数字化技术在口腔医学领域的广泛应用,牙隐裂的诊断有了新的技术保障。文章就吲哚菁绿辅助近红外光成像、造影剂加强锥形术CT成像、X射线暗场断层扫描成像、数字图像相关法、人工智能技术辅助成像、定量光诱导荧光技术等数字化技术在牙隐裂检测中的应用研究进展做一综述,简要阐明以上技术的优缺点、临床应用现状及前景展望,为未来相关研究方向提供参考依据。

关键词：牙隐裂数字化技术吲哚菁绿造影剂 X射线暗场断层扫描数字图像相关法卷积神经网络定量光诱导荧光

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双针-板结构脉冲气泡放电等离子体固氮研究

原子与分子物理学报 2025年第6期42卷 122-128页

作者：赵少伟张丽方志南京工业大学电气工程与控制科学学院南京211816

大气压低温等离子体可以利用空气直接进行氧化固氮,具有反应条件温和、参数灵活可控、避免温室气体排放等优点.本文利用双针-板电极在水中形成气泡放电等离子体,以空气为放电气体进行了固氮研究,分析了产物浓度和固氮能耗的影响因素.研... 详细信息

大气压低温等离子体可以利用空气直接进行氧化固氮,具有反应条件温和、参数灵活可控、避免温室气体排放等优点.本文利用双针-板电极在水中形成气泡放电等离子体,以空气为放电气体进行了固氮研究,分析了产物浓度和固氮能耗的影响因素.研究结果表明,等离子体中含有丰富的氮原子、氧原子、氢原子、激发态氮分子等活性物种,可高效合成硝态含氮产物.研究发现,脉冲参数、电极间隙、工作气体组分对气泡放电等离子体的固氮性能有重要影响.装置最高NO~-_x合成速率为19.2μmol/min,最小能耗约为11 MJ/mol.此外还发现,电极间隙为6 mm时,固氮性能最优;空气中增加适量氧气(氧气/氮气比例为0.4)可以增强产物合成,降低能耗.

关键词：低温等离子体纳秒脉冲放电气液放电固氮

Stable Thiophene-sulfur Covalent Organic Frameworks for Oxygen Reduction Reaction(ORR)

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Chemical Research in Chinese Universities 2022年第2期38卷 396-401页

作者： chang Shunkai li Cuiyan li Hui ZHU liangkui fang Qianrong State Key Laboratory of Inorganic Synthesis&Preparative Chemistry Jilin UniversityChangchun 130012P.R.China

Exploring novel materials deriving from earth resources to substitute for platinum(Pt) electrocatalyst to promote oxygen reduction reaction(ORR) of fuel cell cathode is very important. Herein, we have exploited two crystallographic thiophene-sulfur covalent organic frameworks(COFs), termed JUC-607 and JUC-608, as electrocatalysts that exhibited good ORR performances. These thiophene-sulfur COFs exhibited high stability, and their functional groups acting as active centers in the ORR can be precisely determined. Notably, due to a larger aperture for mass transfer and electrons transport, JUC-608 displayed a growing electrochemical performance, leading to a better ORR activity. Thus, this study will provide a new strategy for designing heteroatom-based COF materials for high-performance electrochemical catalysis.

关键词： Covalent organic framework(COF) Oxygen reduction reaction Thiophene-sulfur

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鸡抗鹿链球菌卵黄抗体的研制与初步治疗实验

吉林畜牧兽医 2005年第10期27卷 8-9页

作者：畅丽芳周学章徐薇薇吉林大学农学部五星药厂吉林长春130062 宁夏大学生命科学院宁夏银川750062

用链球菌灭活菌苗免疫产蛋母鸡,监测卵黄抗体效价达到试验要求收集鸡蛋,提取卵黄中的卵黄免疫球蛋白(IgY)。临床发病鹿群用药物和IgY配合治疗,观察IgY的作用和疗效。

关键词：链球菌卵黄抗体治疗

Corrosion resistance of an amino acid-bioinspired calcium phosphate coating on magnesium alloy AZ31

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Journal of Materials Science & Technology 2020年第14期47卷 224-235页

作者： Xiao-li Fan chang-Yang li Yu-Bo Wang Yuan-fang Huo Shuo-Qi li Rong-chang Zeng Corrosion Laboratory for light Metals College of Materials Science and EngineeringShandong University of Science and TechnologyQingdao 266590China School of Materials Science and Engineering Zhengzhou UniversityZhengzhou 450002China

An L-cysteine-bioinspired calcium phosphate(Ca-P)coating is prepared upon magnesium alloy AZ31 in a water bath at 60℃.FE–SEM,FTIR,XRD,electrochemical characterization,hydrogen evolution tests and XPS were used to evaluate the microstructure,chemistry and corrosion performance of the *** indicate that L-cysteine promotes the nucleation process of the coating and significantly increases its *** can be attributed to the complexation of the carboxyl group and mercapto group of L-cysteine with calcium ***,the obtained Ca-P coating possesses higher corrosion resistance than that prepared in L-cysteine-free bath.

关键词： Magnesium alloys Phosphate Coating Corrosion resistance Amino acid

Based on non-targeted metabolomics for differential components screening of Rosae Chinensis Flos and Rosae Rugosae Flos and their quality evaluation

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Traditional Medicine Research 2025年第2期10卷 1-15页

作者： Xu liang Ni-Hui Zhang Zhi-Lai Zhan Guang-Lu chang Yan Gao Xia li Wen-Yuan Gao School of Pharmaceutical Science and Technology Faculty of MedicineTianjin UniversityTianjin 300193China State Key Laboratory for Quality Ensurance and Sustainable Use of Dao-di Herbs China Academy of Chinese Medical SciencesBeijing 100700China Key Laboratory of Modern Chinese Medicine Resources Research Enterprises Tianjin 300402China

Background:Rosa chinensis *** Rosa rugosa *** not only of ornamental value,but also edible flowers and the flower buds have been listed in the Chinese Pharmacopoeia as traditional *** two plants have some differences in efficacy,but the flower buds are easily confused for similar *** addition,large-scale cultivation of ornamental rose flowers may lead to a decrease in the effective components of medicinal ***,it is necessary to study the chemical composition and make quality evaluation of Rosae Chinensis Flos(Yueji)and Rosae Rugosae Flos(Meigui).Methods:In this study,40 batches of samples including Meigui and Yueji from different regions in China were collected to establish high-performance liquid chromatography ***,the fingerprints data was analyzed using principal component analysis,hierarchical cluster analysis,and partial least squares discriminant analysis analysis chemometrics to obtain information on intergroup differences,and non-targeted metabolomic techniques were applied to identify and compare chemical compositions of samples which were chosen from groups with large *** compounds were screened by orthogonal partial least-squares discriminant analysis and S-plot,and finally multi-component quantification was performed to comprehensively evaluate the quality of Yueji and ***:The similarity between the fingerprints of 40 batches roses and the reference print R was 0.73 to 0.93,indicating that there were similarities and differences between the *** principal component analysis and hierarchical cluster analysis of fingerprints data,the samples from different origins and varieties were intuitively divided into four *** least-squares discriminant analysis analysis showed that Meigui and Yueji cluster into two categories and the model was reliable.A total of 89 compounds were identified by high resolution mass spectrometry,mainly were flavonoids and flavon

关键词： Rosa chinensis Jacq. Rosa rugosa Thunb. metabolomics chemometrics multiple component quantification quality evaluation

Thermal atomic layer etching: Mechanism, materials and prospects

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Progress in Natural Science:Materials International 2018年第6期28卷 667-675页

作者： chang fang Yanqiang Cao Di Wu Aidong li National Laboratory of Solid State Microstructures Department of Materials Science and Engineering College of Engineering and Applied Sciences Collaborative Innovation Center of Advanced Microstructures Nanjing University

In the semiconductors and related industries, the fabrication of nanostructures and nanopatterns has become progressive demand for achieving near-atomic accuracy and selectivity in etching different materials, particularly in ultra-thin gate dielectrics and ultra-thin channels used in field-effect transistors and other nanodevices below 10 nm scale. Atomic layer etching(ALE) is a novel technique for removing thin layers of material using sequential and self-limiting reactions. Different from most ALE processes using plasma-enhanced or other energetic particles-enhanced surface reactions, thermal ALE realizes isotropic atomic-level etch control based on sequential thermal-drive reaction steps that are self-terminating and self-saturating. Thermal ALE can be viewed as the reverse of atomic layer deposition(ALD), both of which define the atomic layer removal and growth steps required for advanced semiconductor fabrication. In this review, we focus on the concept and basic characteristics of the thermal ALE in comparison with ALD. Several typical thermal ALE mechanisms including fluorination and ligand-exchange, conversion-etch, oxidation and fluorination reactions are intensively *** pros and cons of thermal ALE, plasma ALE, and traditional plasma etching are compared. Some representative materials and their typical thermal ALE processes are summarized. Finally, the outlook and challenges of thermal ALE are addressed.

关键词： Thermal atomic layer etching Atomic layer deposition Self-limiting Reaction mechanism Atomic-scale precision

Role of Insulin-like Growth Factor II Receptor in Transdifferentiation of Free Silica-induced Primary Rat Lung Fibroblasts

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Biomedical and Environmental Sciences 2013年第12期26卷 979-985页

作者： HAO chang Fu li Xiao fang YAO Wu Department of Occupational Health and Occupational Disease College of Public Health Zhengzhou University

Objective To study the role of insulin-like growth factor II receptor in free silica-induced transdifferentiation of primary rat lung fibroblasts Methods Rat lung fibroblasts and rat alveolar macrophages were cultured. A transdifferentiation model of primary rat lung fibroblasts was induced by free silica. Levels of a-SMA protein, IGF-liR protein and mRNA were measured by immunocytochemistry, Western blot and RT-PCR, respectively. Lung fibroblasts were treated with Wortmannin. Results The expression levels of a-SMA concentration and decreased after Wortmann and IGF-IIR increased with the increasing free silica n was used. Conclusion The IGF-IIR plays an important role in free silica-induced transdifferentiation of primary rat lung fibroblasts.

关键词： Transdifferentiation Lung fibroblasts Insulin-like growth factor II receptor Silicosis