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Journal of Energy Chemistry 2025年第1期100卷 702-709页

作者： Yiman Gu Yanchao zhang Zhanyu li Yijia Lei Baozeng Sun Xiaoyu Yu Zhe Wang College of Chemistry and life Science Changchun University of Technology College of Chemical Engineering Changchun University of Technology School of Materials Science and Engineering Changchun University of Technology Key Laboratory of Advanced Functional Polymer Membrane Materials of Jilin Province

The development of alkaline fuel cells is moving forward at an accelerated pace,and the application of ether-free bonded polymers to anion exchange membranes （AEMs） has been widely ***,the question of the“trade-off”between AEM ionic conductivity and dimensional stability remains *** strategy of inducing microphase separation to improve the performance of AEM has attracted much attention recently,but the design of optimal molecular structures is still being ***,this work introduced different ratios of 3-bromo-1,1,1-trifluoroacetone （x=40,50,and 60） into the main chain of poly（p-terphenylene isatin）.Because fluorinated groups have excellent hydrophobicity,hydrophilic hydroxyl-containing side chains are introduced to jointly adjust the formation of phase separation *** results show that PTI-PTF50-NOH AEM with the appropriate fluorinated group ratio has the best ionic conductivity and alkali stability under the combined effect of *** has an ionic conductivity of 133.83 mS cm-1at 80°*** addition,the OH-conductivity remains at 89%of the initial value at 80°C and 3 M KOH for 1056 h of *** cell polarization curve based on PTI-PTF50-NOH shows a power density of 734.76 mW cm-2at a current density of 1807.7 mA cm-2.

关键词： Anion exchange membranes Poly(p-terphenylene isatin) Hydrophilic-hydrophobic phase separation Fluorinated group

Dual near-infrared AgInS2 and CuInS2 co-sensitized ZnO photoelectrode array enabled paper-based ratiometric photoelectrochemical aptasensing

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Rare Metals 2024年第12期 6525-6536页

作者： Hong-Mei Yang Chuan-Yi Tu Yi-lin Zhuang Yu-Heng li Yu-Xin Hao Qiu-Yi li li-na zhang Jing-Hua Yu Yan zhang School of Chemistry and Chemical Engineering University of Jinan Shandong Provincial Key Laboratory of Preparation and Measurement of Building Materials University of Jinan

Herein,a dual near-infrared（NIR）-response AgInS2and CuInS2co-sensitized ZnO photoelectrode array consisting of two spatial-resolved paper working electrodes（PWE1and PWE2） was established to enable paper-based ratiometric photoelec trochemical（PEC）aptasensing of Di（2-ethylhexyl）phthalate（DEHP） based on triple-helix molecular switch（THMS）-mediated "on-off" switching of co-sensitization *** from the cosensitization of AgInS2and CuInS2on paper-based ZnO,the dual NIR-response cascade sensitization structure of AgInS2/CuInS2/ZnO exhibited a wide light response range and high charge separation efficiency,giving a "switch on" state of co-sensitization effect with markedly high photocurrent *** "switch off" state of the co-sensitization effect was made by RecJf exonuclease-assisted target recycling-induced conformation change of THMS,which caused the detachment of AgInS2quantum dots from the aptasensing interface,leading to a significantly decreased photocurrent ***,the constant I1of PWE1and varying I2of PWE2were collected based on the incubation of constant concentration of DEHP on PWE1and various concentrations of DEHP on *** ultrasensitive detection of DEHP was realized by calculating the ratio of I2/*** work brought new insights into the establishment of a high-performance paper-based ratiometric PEC aptasensing platform for highly sensitive quantification of DEHP.

关键词：

Decision making module based on stochastic magnetic tunnel junctions

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 202-209页

作者： Yifan Miao li Zhao Yajun zhang Zhe Yuan Center for Advanced Quantum Studies and Department of Physics Beijing Normal University Institute for nanoelectric Devices and Quantum Computing Fudan University Interdisciplinary Center for Theoretical Physics and Information Sciences Fudan University

In biological neural systems, noise is ubiquitous but does not affect the correct decisions made in the complex cognitive ***-making in biological neural system is typically achieved by accumulating input information over a period of *** by recent developments in neurosciences, we design a decision-making module based on spintronic devices, utilizing superparamagnetic tunnel junctions as artificial neurons. The feasibility of this decision-making module is verified through circuit simulations. Taking a multi-layer perceptron as an example, the module significantly improves the accuracy of the perceptron in the handwritten digit recognition task. Furthermore, the spintronic decision-making module offers advantages over the conventional pooling methods, such as adaptive decision time, high performance and the absence of analog-to-digital conversion. The decision-making module is flexible to be integrated into artificial neural networks and provides a general yet effective solution to enhance performance against device noise.

关键词： neuromorphic computing spintronics magnetic tunnel junction neural networks

Depression mechanism of sulfite ions on sphalerite and Pb^(2+)activated sphalerite in the flotation separation of galena from sphalerite

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 335-345页

作者： Feng zhang Chenyang zhang linlin Wu Wei Sun Hongliang zhang Jianhua Chen Yong Pei Songjiang li Engineering Research Center of Ministry of Education for Carbon Emission Reduction in Metal Resource Exploitation and Utilization Hunan International Joint Research Center for Efficient and Clean Utilization of Critical Metal Mineral ResourcesSchool of Minerals Processing and BioengineeringCentral South UniversityChangsha 410083China State Key Laboratory of Mineral Processing Beijing General Research Institute of Mining&MetallurgyBeijing 100160China Hunan Provincial Key Laboratory of Micro&nano Materials Interfaces Science College of Chemistry and Chemical EngineeringCentral South UniversityChangsha 410083China School of Resources Environment and MaterialsGuangxi UniversityNanning 530004China Department of Chemistry Xiangtan UniversityXiangtan 411105China China Railway Resource Group Co.Ltd Beijing 102300China

The depression mechanism of sulfite ions on sphalerite and Pb^(2+)activated sphalerite in the flotation separation of galena from sphalerite still lacked in-depth ***,the depression mechanism of sulfite ions on sphalerite and Pb^(2+)activated sphalerite in the flotation separation of galena from sphalerite was further systematically investigated with experiments and density functional theory(DFT)*** X-ray photoelectric spectroscopy(XPS)results,DFT calculation results,and frontier molecular orbital analysis indicated that sulfite ions were difficult to be adsorbed on sphalerite surface,suggesting that sulfite ions achieved depression effects on sphalerite through other non-adsorption ***,the oxygen content in the surface of sphalerite treated with sulfite ions in creased,which enhanced the hydrophilicity of the sphalerite and further increased the difference in hydrophilicity between sphalerite and ***,sulfite ions were chelated with lead ions to form PbSO_(3)in *** hydrophilic PbSO_(3)was more easily adsorbed on sphalerite than *** interaction between sulfite ions and lead ions could effectively inhibit the activation of *** addition the UV spectrum showed that after adding sulfite ions,the peak of perxanthate in the sphalerite treated xanthate solution was significantly stronger than that in the galena with xanthate solution,indicating that xanthate interacted more readily with sulfite ions and oxygen mo lecules within the sphalerite system,leading to the formation of ***,sulfite ions hardly depressed the flotation of ga lena and could promote the flotation of galena to some *** study deepened the understanding of the depression mechanism o sulfite ions on sphalerite and Pb^(2+)activated sphalerite.

关键词： sphalerite galena sulfite ion density functional theory depression mechanism

双氢青蒿素对人卵巢癌耐药细胞SKOV3/CDDP的体外作用

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实用妇产科杂志 2010年第5期26卷 348-351页

作者：李娜张辉赵群河北医科大学第四医院暨河北省肿瘤医院河北石家庄050011

目的:观察双氢青蒿素对SKOV3/CDDP细胞的体外作用,分析双氢青蒿素抗肿瘤和逆转耐药的效果。方法:采用MTT法观察顺铂、双氢青蒿素以及顺铂联合双氢青蒿素对SKOV3及SKOV3/CDDP细胞的体外影响。结果:①顺铂对SKOV3/CDDP细胞的IC50为34.12mg... 详细信息

目的:观察双氢青蒿素对SKOV3/CDDP细胞的体外作用,分析双氢青蒿素抗肿瘤和逆转耐药的效果。方法:采用MTT法观察顺铂、双氢青蒿素以及顺铂联合双氢青蒿素对SKOV3及SKOV3/CDDP细胞的体外影响。结果:①顺铂对SKOV3/CDDP细胞的IC50为34.12mg/L,是对SKOV3细胞的(IC50为7.52mg/L)4.54倍。②不同浓度的双氢青蒿素对两种细胞的抑制作用随浓度的增加而增强,呈明显的剂量依赖性,组间比较差异有统计学意义(P<0.05)。双氢青蒿素对SKOV3细胞的IC50为27.45μmol/L,对SKOV3/CDDP细胞的IC50为29.22μmol/L。③不同浓度的双氢青蒿素联合顺铂作用于SKOV3细胞,顺铂IC50由单用时的7.52mg/L,下降到联用时的5.30mg/L和2.16mg/L。对SKOV3/CDDP细胞,顺铂IC50由单用时的34.12mg/L,下降为到联用时的15.25mg/L和4.83mg/L。结论:双氢青蒿素对人卵巢癌顺铂耐药细胞SKOV3/CD-DP具有体外抑制作用,对顺铂具有化疗增敏的作用,并能逆转SKOV3/CDDP对顺铂的耐药。

关键词：双氢青蒿素卵巢癌体外抑制

基于Panel Data模型的内蒙古房地产价格影响因素的区域性差异研究

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征信 2017年第6期35卷 65-71页

作者：刘佳乔莉张娜天津财经大学天津市300222 内蒙古财经大学内蒙古呼和浩特010070 中国人民银行呼和浩特市中心支行内蒙古呼和浩特010020

以地方GDP、地方财政收入、职工平均工资、房地产开发投资额为影响内蒙古房地产价格的主要指标,选取2001—2014年内蒙古12个盟市的相关数据,运用面板数据模型,将12个盟市分为中、东、西三个区域,并对影响三个区域房地产价格的因素进行... 详细信息

以地方GDP、地方财政收入、职工平均工资、房地产开发投资额为影响内蒙古房地产价格的主要指标,选取2001—2014年内蒙古12个盟市的相关数据,运用面板数据模型,将12个盟市分为中、东、西三个区域,并对影响三个区域房地产价格的因素进行差异性分析。结果表明,内蒙古房地产价格的影响因素确实存在明显的区域差异。地方GDP对房地产价格的影响在西部最强,中部次之,东部不显著;财政收入和房地产开发投资额对房地产价格的影响程度并不大,明显小于另外两个变量;职工平均工资对中、东、西部的影响东部最大,中部次之,西部不显著。

关键词：房地产价格影响因素区域差异 PanelData模型内蒙古

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浅议药物临床试验机构的风险管理

中国新药与临床杂志 2011年第10期30卷 797-800页

作者：顾俊李娜张志勇上海市公共卫生临床中心上海201508

借鉴风险管理的理论,结合本中心药物临床试验风险管理的应用现状,分析论述如何对临床试验日常管理活动进行风险识别、评估、控制和效果评价,提出药物临床试验机构如何有效进行风险控制的多项建议。

关键词：临床试验危险处理组织机构

Influence of introducing Zr,Ti,Nb and Ce elements on externally solidified crystals and mechanical properties of high-pressure die-casting Al–Si alloy

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 147-153页

作者： Junjie li Wenbo Yu Zhenyu Sun Weichen Zheng liangwei zhang Yanling Xue Wenning liu Shoumei Xiong Center of Materials Science and Engineering School of Mechanical and Electronic Control EngineeringBeijing Jiaotong UniversityBeijing 100044China Traffic&Transportation Engineering Central South UniversityChangsha 410075China Shanghai Synchrotron Radiation Facility Shanghai Advanced Research InstituteChinese Academy of SciencesShanghai 201204China School of Materials Science and Engineering Tsinghua UniversityBeijing 100084China

High pressure die casting(HPDC)AlSi10Mn Mg alloy castings are widely used in the automobile *** can optimize the mechanical properties of castings through heat treatment,while the release of thermal stress arouses the deformation of large integrated ***,the development of non-heat treatment Al alloys is becoming the hot *** addition,HPDC contains externally solidified crystals(ESCs),which are detrimental to the mechanical properties of *** achieve high strength and toughness of non-heat treatment die-casting Al-Si alloy,we used AlSi9Mn alloy as matrix with the introduction of Zr,Ti,Nb,and *** influences on ESCs and mechanical properties were systematically investigated through three-dimensional reconstruction and thermodynamic *** results reveal that the addition of Ti increased ESCs'size and porosity,while the introduction of Nb refined ESCs and decreased ***,large-sized Al_3(Zr,Ti)phases formed and degraded the mechanical *** introduction of Ce resulted in the poisoning effect and reduced mechanical properties.

关键词： aluminium alloy high-pressure die-casting externally solidified crystals non-heat treatment

复合人工湿地对低污染城市河流的深度净化效果

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中国给水排水 2016年第23期32卷 80-84页

作者：贾丽娜张发宇柯凡汪家权李文朝张浏合肥工业大学资源与环境学院安徽合肥230009 中国科学院南京地理与湖泊研究所湖泊与环境国家重点实验室江苏南京210008 江苏高校水处理技术与材料协同创新中心江苏苏州215009 安徽省环境科学研究院安徽合肥230001

针对受到污染的合肥塘西河河水,构建了塘西河人工湿地中试工程对其进行净化,包括淋滤式叠加湿地和河滩湿地两个工艺单元。2015年8月底至2016年5月对该复合人工湿地各级出水进行了连续监测,结果表明,当温度在10℃以上时,系统对总氮、氨... 详细信息

针对受到污染的合肥塘西河河水,构建了塘西河人工湿地中试工程对其进行净化,包括淋滤式叠加湿地和河滩湿地两个工艺单元。2015年8月底至2016年5月对该复合人工湿地各级出水进行了连续监测,结果表明,当温度在10℃以上时,系统对总氮、氨氮和叶绿素a的去除率较高,分别为61.09%、90.58%和70.26%,对总磷和COD的去除率分别为58.81%、33.23%;当温度下降到10℃以下时,该系统对各污染物的净化效果均明显下降。对于劣Ⅴ类河水,经该复合人工湿地系统处理后总磷和COD平均浓度优于《地表水环境质量标准》(GB 3838—2002)的Ⅳ类标准。

关键词：复合人工湿地城市河流低污染温度

基于PCA-RBF神经网络的地铁车站火灾风险评估

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工业安全与环保 2017年第9期43卷 67-70页

作者：王建波彭龙镖李娜张帅青岛理工大学管理学院山东青岛266520

为避免地铁车站火灾事故的发生,帮助地铁车站管理部门做好火灾风险评估工作,提出基于PCA-RBF神经网络的地铁车站火灾风险评估模型。采用主成分分析法(Principal Component Analysis,PCA)对风险评价指标体系进行降维处理,并将降维后的主... 详细信息

为避免地铁车站火灾事故的发生,帮助地铁车站管理部门做好火灾风险评估工作,提出基于PCA-RBF神经网络的地铁车站火灾风险评估模型。采用主成分分析法(Principal Component Analysis,PCA)对风险评价指标体系进行降维处理,并将降维后的主成分作为RBF神经网络的输入变量;选择具有代表性的样本数据训练RBF神经网络,并用检验样本测试训练效果;最后,输入待测样本数据得出火灾风险评估结果。通过实例对比分析,验证了该评估模型在地铁车站火灾风险评估中的可行性与准确性,对类似项目火灾风险评估具有一定参考意义。

关键词：地铁车站火灾风险评估主成分分析法 RBF神经网络