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Insights into the electron transfer mechanisms of permanganate activation by carbon nanotube membrane for enhanced micropollutants degradation

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Frontiers of Environmental Science & Engineering 2023年第9期17卷 115-124页

作者： Xufang Wang Dongli Guo jinna zhang Yuan Yao Yanbiao Liu College of Environmental Science and Engineering Donghua UniversityShanghai 201620China State Key Laboratory of Urban Water Resource and Environment School of EnvironmentHarbin Institute of TechnologyHarbin 150090China MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage School of Chemistry and Chemical EngineeringHarbin Institute of TechnologyHarbin 150080China Shanghai Institute of Pollution Control and Ecological Security Shanghai 200092China

Numerous reagents have been proposed as electron sacrificers to induce the decomposition of permanganate(KMnO_(4))by producing highly reactive Mn species for micropollutants ***,this strategy can lead to low KMnO_(4) utilization efficiency due to limitations associated with poor mass transport and high energy *** the present study,we rationally designed a catalytic carbon nanotube(CNT)membrane for KMnO_(4) activation toward enhanced degradation of *** proposed flow-through system outperformed conventional batch reactor owing to the improved mass transfer via *** optimal conditionals,a>70%removal(equivalent to an oxidation flux of 2.43 mmol/(h·m^(2)))of 80μmol/L sulfamethoxazole(SMX)solution can be achieved at single-pass *** experimental analysis and DFT studies verified that CNT could mediate direct electron transfer from organic molecules to KMnO_(4),resulting in a high utilization efficiency of KMnO_(4).Furthermore,the KMnO_(4)/CNT system had outstanding reusability and CNT could maintain a long-lasting reactivity,which served as a green strategy for the remediation of micropollutants in a sustainable *** study provides new insights into the electron transfer mechanisms and unveils the advantages of effective KMnO_(4) utilization in the KMnO_(4)/CNT system for environmental remediation.

关键词： KMnO_(4) Carbon nanotubes Non-radical pathway Electron transfer Water treatment

Effects of Linear Alkylbenzene Sulfonate on Aggregation Behaviors of Titanium Dioxide Nanoparticles in Aqueous Environment

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Journal of Harbin Institute of Technology(New Series) 2015年第3期22卷 75-81页

作者： Xin Du Jici zhang jinna zhang Ke Wang Shijie You Xiuheng Wang School of Municipal and Environmental Engineering Harbin Institute of Technology

In aqueous environment,organic matters may exert impacts on the aggregation behaviors of titanium dioxide nanoparticles( TiO2-NPs). Owing to the deficiency of studies on the aggregation of TiO2-NPs in the presence of synthetic organic compound,this study used linear alkylbenzene sulfonate( LAS) as a representative to evaluate the effects of TiO2-NPs concentration( 1-10 mg / L),LAS concentration( 0- 1 mg / L),pH( 4- 8)and ionic strength( NaCl,CaCl2; 5- 20 mM) during aggregation of TiO2-NPs suspensions based on the detection of hydrodynamic diameters and electrophoretic mobilities and the calculation of interaction *** results showed that the TiO2-NPs in the presence of LAS are more stable than that in the absence of *** the increase of ionic strength,the hydrodynamic diameter of NPs decreases,and the existence of LAS changes the point of zero charge from 5. 4 to a lower value and thus alteres the aggregation behaviors of TiO2-NPs. The present study suggests that the LAS has a significant impact to the transportation and transformation of nanoparticles in aqueous environment.

关键词： TiO2-NPs LAS aggregation aqueous environment DLVO

Inner alkyl chain modulation of small molecular acceptors enables molecular packing optimization and efficient organic solar cells

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Science China Chemistry 2023年第2期66卷 500-507页

作者： Yuntong Guo Zhenyu Chen Jinfeng Ge jinna zhang Lin Xie Ruixiang Peng Wei Ma Ziyi Ge Zhejiang Engineering Research Center for Energy Optoelectronic Materials and Devices Ningbo Institute of Materials Technology and EngineeringChinese Academy of SciencesNingbo315201China School of Chemical Engineering Zhejiang University of TechnologyHangzhou310014China State Key Laboratory for Mechanical Behavior of Materials Xi’an Jiaotong UniversityXi’an710049China

With the generation of Y6,organic solar cells have reached remarkable achievement of over 19%*** chain is of importance to modulate intermolecular stacking and possibly enhance optoelectronic properties of small molecule acceptors(SMAs).Three alkyl chains of 2-ethylhexyl,2-butylocyl and 3-ethylheptyl were selected to obtain G6-EH,G6-BO and G6-EHep molecules,*** to G6-EH and G6-BO,G6-EHep was found inducing unfavourable large domain ***,we discover that 2-butyloctyl effectively inhibits monomolecular and bimolecular recombination,improves molecular packing,generates more balanced carrier mobility and enhances exciton *** SMA with 2-butyloctyl alkyl chains(G6-BO)shows the best electrical and morphological characteristics,achieving a higher power conversion efficiency(PCE)of 17.06%,with an open circuit voltage of 0.912 V,a short-circuit current of 24.22 m A cm-2and a fill factor of 77.25%.Finally,using the ternary strategy by incorporating the G6-BO acceptor into PM6:BTP-e C9,we achieved a higher PCE of18.13%with enhanced electron transport.

关键词： alkyl chain small molecular acceptors molecular packing ternary strategy

Numerical Modeling of Microbial Fuel Cell Based on Redox Electron Mediator

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Journal of Harbin Institute of Technology(New series) 2015年第3期22卷 48-56页

作者： Yuan Yuan jinna zhang Hong Huang Shijie You Xiaobo Gong Nanqi Ren State Key Laboratory of Urban Water Resource and Environment Harbin Institute of Technology

To investigate the behavior of redox electron mediator and its impact to power generation of microbial fuel cell( MFC),this study carries out the numerical modeling of a typical two-chamber MFC based on assumption of interfacial electron transfer via redox electron mediator and acetate as sole electron donor. The model simulates the development of cell voltage,current,substrate concentration,redox electron mediator concentration,polarization and power density output under defined conditions. The results demonstrate that the developed models can fit the experimental results well on a qualitative basis,and concentration of electron reduced mediator plays a dominant role in electron transfer process,and the mass transfer may constitute the limiting step when its concentration is at a relatively low level. This study not only provides a better understanding of electron redox mediator behavior during power generation,but also suggests a strategy to improve electron transfer in the anode of MFC.

关键词： microbial fuel cell numerical modeling redox electron mediator mass transfer

CUDC-101 as a dual-target inhibitor of EGFR and HDAC enhances the anti-myeloma effects of bortezomib by regulating G2/M cell cycle arrest

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2023年第5期24卷 442-454页

作者： Wen CAO Shunnan YAO Anqi LI Haoguang CHEN Enfan zhang Liqin CAO jinna zhang Yifan HOU Zhenfeng DAI Jing CHEN Xi HUANG Li YANG Zhen CAI Bone Marrow Transplantation Center the First Affiliated HospitalSchool of MedicineZhejiang UniversityHangzhou 310006China Institute of Hematology Zhejiang UniversityHangzhou 310058China School of Medicine Zhejiang UniversityHangzhou 310058China

CUDC-101,an effective and multi-target inhibitor of epidermal growth factor receptor(EGFR),histone deacetylase(HDAC),and human epidermal growth factor receptor 2(HER2),has been reported to inhibit many kinds of cancers,such as acute promyelocytic leukemia and non-Hodgkin's ***,no studies have yet investigated whether CUDC-101 is effective against ***,we proved that CUDC-101 effectively inhibits the proliferation of multiple myeloma(MM)cell lines and induces cell apoptosis in a time-and dose-dependent ***,CUDC-101 markedly blocked the signaling pathway of EGFR/phosphoinositide-3-kinase(PI3K)and HDAC,and regulated the cell cycle G2/M ***,we revealed through in vivo experiment that CUDC-101 is a potent anti-myeloma *** is one of the important drugs in MM treatment,and we investigated whether CUDC-101 has a synergistic or additive effect with *** results showed that this drug combination had a synergistic anti-myeloma effect by inducing G2/M phase ***,our findings revealed that CUDC-101 could act on its own or in conjunction with bortezomib,which provides insights into exploring new strategies for MM treatment.

关键词： CUDC-101 Multiple myeloma Bortezomib Epidermal growth factor receptor(EGFR) Cell cycle

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农田灌溉系统网络安全模型的设计

农机化研究 2024年第8期46卷 138-141页

作者：张金娜郑州财税金融职业学院郑州450000

以农田灌溉系统数据传输过程为研究对象,基于无线网络通信传输的方式,搭建灌溉系统数据交互系统。利用温湿度传感器对农田区域内的土壤湿度进行监测,监测数据经通讯网络发送至上位机,与设定阈值比对后生成灌溉控制指令。运行试验数据表... 详细信息

以农田灌溉系统数据传输过程为研究对象,基于无线网络通信传输的方式,搭建灌溉系统数据交互系统。利用温湿度传感器对农田区域内的土壤湿度进行监测,监测数据经通讯网络发送至上位机,与设定阈值比对后生成灌溉控制指令。运行试验数据表明:系统运行过程稳定高效,数据传输安全,在农田灌溉过程中具有较高的实用性。

关键词：农田灌溉系统网络安全数据传输监测与控制

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基于物联网技术的土壤墒情监测系统应用研究

农机化研究 2024年第7期46卷 212-215页

作者：张金娜郑州财税金融职业学院郑州450000

针对我国农业用水效率较低问题,基于物联网技术对土壤墒情监测系统进行应用研究,旨在根据土壤的墒情状态制定农田灌溉方案,达到节水的目的。该系统主要组成包括感知层、网络层和应用层。为了对土壤墒情进行准确的预测,采用物联网技术对... 详细信息

针对我国农业用水效率较低问题,基于物联网技术对土壤墒情监测系统进行应用研究,旨在根据土壤的墒情状态制定农田灌溉方案,达到节水的目的。该系统主要组成包括感知层、网络层和应用层。为了对土壤墒情进行准确的预测,采用物联网技术对土壤墒情进行监测,并建立BP神经网络模型进行土壤墒情预测。为了验证该监测系统的性能,采用实际的土壤墒情数据对系统进行训练并验证,结果表明:系统可以对土壤墒情进行准确的预测。

关键词：农田灌溉物联网技术土壤墒情监测系统墒情预测 BP神经网络

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利用压缩感知实现随机变频雷达散射中心估计

红外与激光工程 2016年第5期45卷 288-294页

作者：杨新锋张金娜滕书华崔宇南阳理工学院计算机与信息工程学院郑州财税金融职业学院信息技术系国防科学技术大学自动目标识别重点实验室中国人民解放军66393部队

随机变频信号体制不仅可以降低系统瞬时带宽和数据采样率,还具有很强的抗干扰能力,然而,信号频率的随机变化导致现有目标散射中心估计方法失效。推导了随机变频信号的回波模型,在分析回波稀疏特性的基础上,提出了一种基于压缩感知的散... 详细信息

随机变频信号体制不仅可以降低系统瞬时带宽和数据采样率,还具有很强的抗干扰能力,然而,信号频率的随机变化导致现有目标散射中心估计方法失效。推导了随机变频信号的回波模型,在分析回波稀疏特性的基础上,提出了一种基于压缩感知的散射中心模型参数估计方法,将参数估计问题转化为压缩感知理论中的稀疏信号重构问题,并分析了感知矩阵对稀疏信号的重构性能。实验结果表明,所提方法能够在降低数据采样率的情况下对目标散射中心参数进行有效估计。

关键词：雷达目标识别压缩感知散射中心稀疏

基于混合累积模式匹配的云数据特征分区融合算法

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科技通报 2016年第2期32卷 158-162页

作者：张金娜喻林郑州财税金融职业学院信息技术系郑州450000

在无线传感器网络云计算环境下,传统的数据融合方法,对混合累积特征未进行滤波后置检测,无法实现模式匹配,数据融合误差控制不可控制。提出混合累积模式匹配的云数据特征分区融合算法,根据两云间云滴的取小取大后的比值描述云间相似程度... 详细信息

在无线传感器网络云计算环境下,传统的数据融合方法,对混合累积特征未进行滤波后置检测,无法实现模式匹配,数据融合误差控制不可控制。提出混合累积模式匹配的云数据特征分区融合算法,根据两云间云滴的取小取大后的比值描述云间相似程度,得到云数据信息熵融合特征的功率谱幅度,采用簇内数据相异粒度寻优法得到云数据的熵融合特征提取最优化的约束条件,对特征进行混合累积模式匹配,对云数据的分区特征混合累积模式匹配滤波后置处理,控制云数据分区特征融合误差,实现算法改进。仿真结果表明,该算法提高特征空间增益,其精度高、实现简单等优良特性,性能优于传统算法。

关键词：云数据特征融合模式匹配无线传感器网络