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Improved oxygen electrocatalysis at Fe N4 and Co N4 sites via construction of axial coordination

Chinese Chemical Letters 2025年第2期36卷 482-487页

作者： Ze Zhang Lei Yang Jin-Ru Liu Hao hu jian-Li Mi Chao Su Bei-Bei xiao Zhi-Min Ao School of Energy and Power Engineering Jiangsu University of Science and Technology Institute for Computation in Molecular and Materials Science School of Chemistry and Chemical Engineering Nanjing University of Science and Technology Institute for Advanced Materials School of Materials Science and Engineering Jiangsu University Advanced Interdisciplinary Institute of Environment and Ecology Beijing Normal University

The quest for efficient and durable catalysts using abundant resources has garnered significant interest in the field of bifunctional oxygen *** this contribution,we have designed a FeN4or CoN4embedded graphene-based bilayer as active layer and TMC3or TMN3doped graphene as supporting layer,named as FeN4/TMC3or FeN4/TMN3and CoN4/TMC3or CoN4/TMN3,wherein TM strands for transition *** on density functional theory calculations,our results demonstrate that the interaction formed between dual metal atoms in the bilayer interspace leads to the coordination environment altered from flat four-coordination to spatial five-coordination,further stabilizing the bilayer structure and impairing its affinity toward the O-containing *** to thermodynamic analysis,the bilayers of CoN4/CoN3,FeN4/FeC3,FeN4/CoC3,FeN4/NiC3,FeN4/ZnC3,FeN4/FeN3,FeN4/CrN3and FeN4/ZnN3are attractively promising for bifunctional oxygen electrocatalysis due to the small overpotential differenceΔη between oxygen reduction and oxygen evolution that are less than 1 *** functional theory calculations combined with machine learning analysis directly identify the key role played by the interbinding formed between bilayers,that boosts catalytic activity,which establishes a predictable framework for a fast screen for graphene-based bilayer vertical *** work opens up a new path for designing the efficient electrocatalysts via modification of coordination environment.

关键词： Density functional theory Machine learning Oxygen electrocatalysis Thermodynamic analysis

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Expression of adenosine receptors in human retinal pigment epithelium cells in vitro

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Chinese Medical Journal 2011年第8期124卷 1139-1144页

作者： WAN Wen-juan CUI Dong-mei YANG xiao hu jian-min LI Chuan-xu hu Shou-long Klaus Trier ZENG Jun-wen State Key Laboratory of Ophthalmology Zhongshan OphthalmicCenter Sun Yat-sen University Guangzhou Guangdong 510060China

Background Adenosine receptors （ADORs） have been reported to play a role in experimental myopia. This study aimed to determine the distribution of ADORs in human retinal pigment epithelium （RPE） cells cultured in *** human RPE cells （cell line D407） were cultured in vitro. ADOR mRNA in RPE was detected by reverse transcription polymerase chain reaction. ADOR protein expression in RPE was confirmed by Western blotting analysis of cell lysates. Confocal fluorescence microscopy was used to study the subcellular distribution of *** All four subtypes of ADORs mRNA and protein were expressed in human RPE. This was confirmed by Western blotting analysis. The ADOR subtypes were differently distributed within the cells. ADORA1 was expressed in nucleus, perinucleus and cytoplasm of RPE. ADORA2A was concentrated mainly in one side of the perinucleus and cytoplasm of RPE. ADORA2B was strongly expressed in the nucleus, perinucleus and the cytoplasm, and ADORA3 was expressed weakly in the cytoplasm of *** ADORs are expressed in human RPE. The different distribution at the subcellular level suggests different functions of ADOR subtypes.

关键词： retinal pigment epithelium cell adenosine receptors cell culture

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小振幅振动屋盖风压特性研究

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振动工程学报 2018年第5期31卷 821-826页

作者：张建胡剑箫李天杨庆山北京交通大学土木建筑工程学院北京100044 结构风工程与城市风环境北京市重点实验室北京100044 重庆大学土木工程学院重庆400044

风荷载作用下,大跨度屋盖通常会出现不同频率的小振幅振动。为描述这类小振幅振动屋盖的风荷载分布情况,采用准定常理论,构造基于时间离散的准定常风压统计方法,并由此给出相应的平均风压统计表达式。采用计算流体力学方法,对不同振动... 详细信息

风荷载作用下,大跨度屋盖通常会出现不同频率的小振幅振动。为描述这类小振幅振动屋盖的风荷载分布情况,采用准定常理论,构造基于时间离散的准定常风压统计方法,并由此给出相应的平均风压统计表达式。采用计算流体力学方法,对不同振动频率的屋盖进行风压分布模拟,结合准定常风压统计方法分析屋盖表面平均风压和脉动风压分布特性,并与相关风洞试验数据进行对比。研究结果表明:对于二阶振型振动的小振幅平屋盖,在不同振动频率条件下,屋盖表面平均风压的分布与静态平屋盖的形态接近;而脉动风压的特性与静态平屋盖的情况差别较大。

关键词：柔性屋盖结构风压分布大涡模拟小振幅振动准定常理论

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基于焦元相似度的证据理论合成规则

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模式识别与人工智能 2009年第2期22卷 169-175页

作者：杨善林罗贺胡小建合肥工业大学计算机网络系统研究所合肥230009 合肥工业大学管理学院过程优化与智能决策教育部重点实验室合肥230009 合肥工业大学计算机与信息学院合肥230009

针对证据合成过程中的冲突分配不合理、"一票否决"以及鲁棒性差等问题,提出焦元距离和焦元相似度的概念,并给出焦元距离矩阵和焦元相似度矩阵的定义.在此基础上,将证据合成分解为相关性证据合成与冲突性证据合成两个部分,建立一种基于... 详细信息

针对证据合成过程中的冲突分配不合理、"一票否决"以及鲁棒性差等问题,提出焦元距离和焦元相似度的概念,并给出焦元距离矩阵和焦元相似度矩阵的定义.在此基础上,将证据合成分解为相关性证据合成与冲突性证据合成两个部分,建立一种基于焦元相似度的证据理论合成规则,并进行理论证明.对比实验表明,该规则可以合理地对冲突证据进行分配,有效避免"一票否决"现象,同时具有较好的鲁棒性.

关键词：证据理论焦元多源信息信息融合

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Structural designs and mechanism insights into electrocatalytic oxidation of 5-hydroxymethylfurfural

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Journal of Energy Chemistry 2025年第1期100卷 792-814页

作者： Jing Lei huijie Zhang jian Yang Jia Ran Jiqiang Ning Haiyan Wang Yong hu Key Laboratory of the Ministry of Education for Advanced Catalysis Materials Department of ChemistryZhejiang Normal UniversityJinhua 321004ZhejiangChina Jinhua Advanced Research Institute Jinhua 321019ZhejiangChina Department of Optical Science and Engineering Fudan UniversityShanghai 200438China College of Chemistry and Materials Engineering Zhejiang A&F UniversityHangzhou 311300ZhejiangChina

Biomass conversion offers an efficient approach to alleviate the energy and environmental *** oxidation of 5-hydroxymethylfurfural(HMF)has attracted tremendous attention in the latest few years for the mild synthesis conditions and high conversion efficiency to obtain 2,5-furan dicarboxylic acid(FDCA),but there still remain problems such as limited yield,short cycle life,and ambiguous reaction *** many reviews highlighting a variety of electrocatalysts for electrochemical oxidation of HMF,a detailed discussion of the structural modulation of catalyst and the underlying catalytic mechanism is still *** herein provide a comprehensive summary of the recent development of electrochemical oxidation of HMF to FDCA,particularly focusing on the mechanism studies as well as the advanced strategies developed to regulate the structure and optimize the performance of the electrocatalysts,including heterointerface construction,defect engineering,single-atom engineering,and in situ *** characterization techniques and theoretical calculation methods for mechanism and active site studies are elaborated,and challenges and future directions of electrochemical oxidation of HMF are also *** review will provide guidance for designing advanced catalysts and deepening the understanding of the reaction mechanism beneath electrochemical oxidation of HMF to FDCA.

关键词： Electrochemical oxidation of 5- hydroxymethylfurfural 2,5-Furan dicarboxylic acid Structural design Mechanism Electrocatalysts

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Full biosynthetic pathway of pyrrolobenzoxazines

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Chinese Chemical Letters 2025年第1期36卷 433-436页

作者： Kunya Wang Bingyu Liu Daojiang Yan jian Bai Haibo Yu Youcai hu State Key Laboratory of Bioactive Substance and Function of Natural Medicines Institute of Materia MedicaChinese Academy of Medical Sciences&Peking Union Medical CollegeBeijing 100050China

Pyrrolobenzoxazines are a rare terpene-amino acid family of natural products with potent biological ***,we reported the full biosynthetic pathway of paeciloxazine(1),a typical pyrrolobenzoxazine,with significant insecticidal *** on heterologous expression,chemical complement experiment,and in vitro biochemical assays,we demonstrated the sesquiterpene portion of 1 derived from discontinuously oxidations of amorphdiene,in which P450 monooxygenase PaxH catalyzed a cascade of hydroxylation and epoxidation,while two flavin dependent monooxygenases are involved in the transformation of the esterified tryptophan into a pyrrolobenzoxazine ***,a total of 15 compounds were generated through heterologous expression,of which 13,17 and 20 showed potential antiepileptic *** study fully elucidated the biosynthetic pathway of paeciloxazine(1)and showed the diversity and complexity of constructing natural products by organisms.

关键词： Pyrrolobenzoxazines Paeciloxazine Biosynthesis P450 monooxygenase Antiepileptic activity

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基于ActiveX的虚拟控制系统通用集成平台研究

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系统仿真学报 2006年第9期18卷 2451-2454,2460页

作者：付超杨善林胡小建合肥工业大学计算机网络系统研究所合肥230009

针对不同领域虚拟控制系统的构建问题,提出一种通用集成平台,解决系统配置升级、系统控制界面、系统控制三个关键问题。通过ActiveX动态加载方法,实现系统升级的平台源代码无关性。文章最后对虚拟数控系统进行源代码级升级和配置级升级... 详细信息

针对不同领域虚拟控制系统的构建问题,提出一种通用集成平台,解决系统配置升级、系统控制界面、系统控制三个关键问题。通过ActiveX动态加载方法,实现系统升级的平台源代码无关性。文章最后对虚拟数控系统进行源代码级升级和配置级升级的对比实验,实验结果表明,对比源代码级升级,配置级升级不仅具有升级效率高、无全局效应、通用性强、测试局部化、处理逻辑可定制的优点,而且在时间、付出、质量三种度量上存在显著优势。

关键词：虚拟控制系统通用集成平台 ActiveX 配置升级

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固相萃取-超高效液相色谱串联质谱法测定饮用水中15种邻苯二甲酸酯

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分析化学 2014年第9期42卷 1281-1287页

作者：张海婧胡小键林少彬中国疾病预防控制中心环境与健康相关产品安全所

建立了饮用水中15种邻苯二甲酸酯的固相萃取超高效液相色谱串联质谱测定方法。样品经C18固相萃取柱富集,以苯基柱分离,以甲醇和水为流动相进行梯度洗脱,正离子模式下质谱多反应监测（MRM）模式检测,外标法定量。结果表明,邻苯二甲酸二... 详细信息

建立了饮用水中15种邻苯二甲酸酯的固相萃取超高效液相色谱串联质谱测定方法。样品经C18固相萃取柱富集,以苯基柱分离,以甲醇和水为流动相进行梯度洗脱,正离子模式下质谱多反应监测（MRM）模式检测,外标法定量。结果表明,邻苯二甲酸二丁酯在0.63;000μg/L,其余14种邻苯二甲酸酯在0.002;00μg/L范围内线性关系良好,相关系数均大于0.9970。本方法对15种邻苯二甲酸酯的定量限为2.2;32 ng/L,回收率在81.3%;09%之间,RSD<14%。

关键词：饮用水邻苯二甲酸酯固相萃取超高效液相色谱串联质谱

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As-cast Ti_(x)(AlVCr)_(100−x)light-weight medium entropy alloys with high strength and uniform compressive plasticity

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中国有色金属学报 2025年第1期35卷 194-206页

作者： Ming-jie KAI Yu-jie MA xiao-tian WANG Liang CHENG jian-bo hu Yao-yao hu Tai-ran XU Gui-jiang LI Xiang-kang MENG Zhen-hua CAO College of Materials Science and Engineering Nanjing Tech UniversityNanjing 210009China School of Intelligent Manufacturing and Information Jiangsu Shipping CollegeNantong 226010China Laboratory for Shock Wave and Detonation Physics Institute of Fluid PhysicsChina Academy of Engineering PhysicsMianyang 621900China National Laboratory of Solid State Microstructures College of Engineering and Applied SciencesNanjing UniversityNanjing 210093China

The effect of Ti content on the microstructure and mechanical properties of as-cast light-weight Ti_(x)(AlVCr)_(100−x)medium entropy alloys was studied by compressive tests,X-ray diffraction,scanning electron microscopy and transmission electron *** results suggest that yield strength increases and then decreases with the increment of Ti *** Ti_(60)(AlVCr)_(40)alloy has the best combination of high strength of 1204 MPa and uniform plastic strain of 70%,possessing a high specific yield strength of 255 MPa·cm^(3)/*** enhancement of strength is mainly attributed to the synergic effects of solid-solution and coherent nano-precipitation strengthening,while dislocation motion such as dislocation pinning,entanglement and dislocation cells significantly increases the strain-hardening capacity.

关键词： TiAlVCr medium entropy alloy solid solution strengthening b2 precipitate strain hardening behavior

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Nanoplastics and nano-ZnO facilitate Cd accumulation in zebrafish larvae via a distinct pathway: Revelation by LA-ICP-MS imaging

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Chinese Chemical Letters 2025年第2期36卷 436-440页

作者： Pengyu Chen Beibei Chen Man He Yuxi Zhou Lei Lei jian Han Bingsheng Zhou Ligang hu Bin hu Department of Chemistry Wuhan University State Key Laboratory of Freshwater Ecology and Biotechnology Institute of Hydrobiology Chinese Academy of Sciences State Key Laboratory of Environmental Chemistry and Ecotoxicology Research Center for Eco-Environmental Sciences Chinese Academy of Sciences

The interaction between nanoparticles （NPs） and pollutants affects their bioavailability and ***,the processes by which NPs and pollutants change in vivo have rarely been ***,using laser ablation-inductively coupled plasma-mass spectrometry （LA-ICP–MS）,we found that both nanoplastics and ZnO NPs caused more Cd to accumulate in zebrafish larvae,but with distinct *** could adsorb Cd2+and transfer it into the larvae through the“Trojan horse”*** coexposure of nanoplastics and Cd2+caused Cd to accumulate in the abdomen where the nanoplastics were located without dissociation,showing a lower toxic effect than Cd2+exposure *** NPs weakly adsorbed Cd2+,but they increased the Zn and Cd contents in larvae by enhancing the expression of metal *** coexposure of ZnO and Cd2+evenly distributed Cd in the larvae,revealing a more severe toxic effect than Cd2+exposure *** results demonstrated the changing bioavailability and toxicity of Cd induced by different *** also shows the vital role LA-ICP-MS plays in revealing the relationship between toxicity and *** addition,the long-term effect of bioavailability on heavy metal toxicity and nanosafety deserves further investigation.

关键词： Cadmium Combined effect LA-ICP-MS Nanoplastics Zebrafish larvae ZnO nanoparticles

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