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Conductive and stable polyphenylene/CNT composite membrane for electrically enhanced membrane fouling mitigation

Frontiers of Environmental Science & Engineering 2024年第1期18卷 35-47页

作者： Huijuan Xie Haiguang Zhang Xu wang gaoliang Wei Shuo Chen Xie Quan Key Laboratory of Industrial Ecology and Environmental Engineering(Ministry of Education) School of Environmental Science and TechnologyDalian University of TechnologyDalian 116024China

Nanocarbon-based conductive membranes, especially carbon nanotube (CNT)-based membranes, have tremendous potential for wastewater treatment and water purification because of their excellent water permeability and selectivity, as well as their electrochemically enhanced performance (e.g., improved antifouling ability). However, it remains challenging to prepare CNT membranes with high structural stability and high electrical conductivity. In this study, a highly electroconductive and structurally stable polyphenylene/CNT (PP/CNT) composite membrane was prepared by electropolymerizing biphenyl on a CNT hollow fiber membrane. The PP/CNT membrane showed 3.4 and 5.0 times higher electrical conductivity than pure CNT and poly(vinyl alcohol)/CNT (PVA/CNT) membranes, respectively. The structural stability of the membrane was superior to that of the pure CNT membrane and comparable to that of the PVA/CNT membrane. The membrane fouling was significantly alleviated under an electrical assistance of −2.0 V, with a flux loss of only 11.7% after 5 h filtration of humic acid, which is significantly lower than those of PP/CNT membranes without electro-assistance (56.8%) and commercial polyvinylidene fluoride (PVDF) membranes (64.1%). Additionally, the rejection of negatively charged pollutants (humic acid and sodium alginate) was improved by the enhanced electrostatic repulsion. After four consecutive filtration-cleaning cycle tests, the flux recovery rate after backwashing reached 97.2%, which was much higher than those of electricity-free PP/CNT membranes (67.0%) and commercial PVDF membranes (61.1%). This study offers insights into the preparation of stable conductive membranes for membrane fouling control in potential water treatment applications.

关键词： Polyphenylene CNTs Membrane Electro-assistance Membrane fouling mitigation

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Correction of Interferometric High-Order Nonlinearity Error in Metrological Atomic Force Microscopy

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Nanomanufacturing and Metrology 2022年第4期5卷 412-422页

作者： gaoliang Dai Xiukun Hu Physikalisch-Technische Bundesanstalt Bundesallee 10038116BraunschweigGermany Key Laboratory for Magnetism of Zhejiang Province College of Materials and ChemistryChina Jiliang UniversityHangzhou310018People’s Republic of China

Metrological atomic force microscopes(***)with built-in interferometers are one of the main workhorses for versatile dimensional *** interferometric nonlinearity error,particularly the high-order(i.e.,3rd-and 4th-order)nonlinearity errors,is a dominant error source for further improving their metrology performance,which cannot be corrected using the conventional Heydemann correction *** solve this problem,two new methods were *** uses a capacitive sensor embedded in the ***,and the other applies an external physical artifact with a flat *** methods can be applied very conveniently and can effectively reduce the nonlinearity *** this paper,the propagation of the(residual)nonlinearity error in step height calibrations is ***,the performance of the improved tool is verified in the calibration of a highly demanding industrial *** the measurements performed at 25 different positions and repeated six times,the standard deviation of the total 150 measured values is 0.08 nm,which includes the contributions from the reproducibility of the metrology tool and sample *** research has significantly improved our dimensional nanometrology *** instance,the extended measurement uncertainty(k=2)is reduced from 1.0 to 0.3 nm for the step height or etching depth calibrations.

关键词： Dimensional nanometrology Traceable calibration Metrological atomic force microscopy Interferometry Nonlinearity error Step height

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Evaluation method of node importance for power grid considering inflow and outflow power

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Journal of Modern Power Systems and Clean Energy 2017年第5期5卷 696-703页

作者： Huifang wang Zhengbo SHAN gaoliang YING Bo ZHANG Guoping ZOU Benteng HE Department of Electrical Engineering Zhejiang UniversityHangzhou 310027China State Grid Jinhua Electric Power Company Jinhua 321017China Electric Power Research Institute of State Grid Zhejiang Electric Power Company Hangzhou 310014China

The effective identifications of important nodes in power grid are foundations of differentiated management and stable operation of power grid. However, the current studies on this field are not thorough enough. This paper applies the model based on co-citation(MBCC)-hypertext induced topic selection(HITS) algorithm used in web page ranking to power grid and proposes an index to determine node importance of power grid from the perspectives of inflow and outflow power. MBCC-HITS algorithm is modified considering load, power source, and line flow comprehensively for the differences between Internet and power grid in this paper. Then a method for evaluating node importance is proposed using the modified algorithm. Lastly, the rationality and validity of the proposed method are verified by comparisons with other methods in case studies of IEEE 14-bus and 118-bus systems.

关键词： Node importance MBCC-HITS algorithm Directed and weighted graph Inflow power Outflow power Power grid

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Matricellular proteins: multifaceted extracellular regulators in tumor dormancy

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Protein & Cell 2014年第4期5卷 249-252页

作者： Tiantian Wu gaoliang Ouyang State Key Laboratory of Cellular Stress Biology Innovation Center for Cell Biology School of Life Sciences Xiamen University

Tightly controlled extracellular matrix (ECM) homeostasis and remodeling is critical for normal organ homeostasis,wound healing and tissue ***,excessive or uncontrolled ECM deposition contributes to aberrant homeostasis of tissue microenvironment in various inflammatory diseases and *** proteins are a set of structurally unrelated ECM proteins that do not exert a primary role in tissue architecture but have regulatory roles in embryonic development,tissue injury,inflammation and tumor *** recent studies demonstrated that matricellular proteins in the ECM surrounding dormant tumor cells may determine the fate of tumor cells to remain quiescent or undergo metastatic *** identification of matricellular proteins in regulating ECM homeostasis and remodeling specific organ niches during tumor dormancy may provide potential novel extracellular targets for the development of therapeutic interventions against tumor dormancy.

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鼻咽拭子细菌培养在儿童细菌性呼吸道感染病原诊断中的价值

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检验医学 2022年第3期37卷 201-204页

作者：谢永平华春珍魏林琳汪洪姣王高良李建平浙江大学医学院附属儿童医院感染病科浙江杭州310003 浙江大学医学院附属儿童医院实验检验中心浙江杭州310003

目的分析鼻咽拭子细菌培养在儿童呼吸道感染病原诊断中的价值。方法同时采集403例类百日咳综合征或肺炎住院患儿鼻咽拭子和口腔吸取物,以分区划种半定量法接种培养后进行菌种鉴定,“+++”及以上考虑有临床意义。对比2种类型样本培养结... 详细信息

目的分析鼻咽拭子细菌培养在儿童呼吸道感染病原诊断中的价值。方法同时采集403例类百日咳综合征或肺炎住院患儿鼻咽拭子和口腔吸取物,以分区划种半定量法接种培养后进行菌种鉴定,“+++”及以上考虑有临床意义。对比2种类型样本培养结果及其与患儿临床表现和疾病转归的吻合程度。结果403例患儿中,鼻咽拭子培养阳性率为31.5%(127/403),居前4位的病原分别为百日咳鲍德特菌(13.4%)、流感嗜血杆菌(7.9%)、卡他莫拉菌(4.0%)和肺炎链球菌(3.5%)。口腔吸取物培养阳性率为12.4%(50/403),百日咳鲍德特菌、流感嗜血杆菌、卡他莫拉菌和肺炎链球菌的分离率分别为0.7%、4.5%、1.0%和1.2%。鼻咽拭子样本4种病原总阳性率均显著高于口腔吸取物样本(P<0.05)。62.0%(31/50)的患儿鼻咽拭子样本病原培养结果与口腔吸取物样本培养结果一致。经鼻咽拭子样本确定的病原中,有98.4%(125/127)经抗菌药物治疗后细菌培养阴转,患儿临床症状有所改善。结论鼻咽拭子样本细菌培养有助于提高儿童呼吸道病原菌的检出率,对临床病原判断有一定参考价值。

关键词：细菌鼻咽拭子呼吸道感染儿童

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MICP纤维加筋优化电渗法加固软黏土的试验研究

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河南理工大学学报（自然科学版） 2025年第1期44卷 166-175页

作者：胡其志陈禹龙刘一鸣陶高梁湖北工业大学土木建筑与环境学院湖北武汉430068 湖北省桥梁安全监控技术及装备技术工程研究中心湖北武汉430068

目的为缓解传统电渗法加固软黏土过程中土体开裂和不均匀沉降等问题,改善软黏土的工程性质,提出微生物诱导碳酸钙沉淀(MICP)技术联合玄武岩纤维加筋优化电渗法处理效果。方法通过开展软黏土室内电渗模型试验,分析电渗过程中的排水量、... 详细信息

目的为缓解传统电渗法加固软黏土过程中土体开裂和不均匀沉降等问题,改善软黏土的工程性质,提出微生物诱导碳酸钙沉淀(MICP)技术联合玄武岩纤维加筋优化电渗法处理效果。方法通过开展软黏土室内电渗模型试验,分析电渗过程中的排水量、电流强度和有效电阻,以及电渗处理后土体表面沉降量、含水率、抗剪强度和pH,结合SEM图像探究不同掺量的玄武岩纤维以及MICP-玄武岩纤维联合作用机制对电渗加固效果的影响机理。结果结果表明:(1)不同掺量的玄武岩纤维对电渗效果影响差异显著,纤维加入软黏土后可抑制电渗过程中的土体裂缝发展与电流衰减,掺量为0.4%的试验组最佳效果;(2)MICP技术与玄武岩纤维加筋的联合使电渗过程变得更加均衡与顺畅,有效改善了电渗固结排水导致的土体表面不均匀沉降;(3)在电渗过程中,MICP反应在土颗粒与纤维表面上生成的碳酸钙沉淀填充加固了土体,提升了土体强度均匀性;(4)MICP技术的加入在提升土体强度的同时减少了土体孔隙液的排出,降低了废液处理的压力,具有更高的环境适应性。结论该研究结果为提升电渗法加固软黏土地基的处理效果提供了新思路,拓展了加固软黏土方法新的可能性。

关键词：电渗法软黏土微生物诱导碳酸钙沉淀玄武岩纤维土体沉降

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Two categories of fractal models of rock and soil expressing volume and size-distribution of pores and grains

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Chinese Science Bulletin 2009年第23期54卷 4458-4467页

作者： TAO gaoliang ZHANG JiRu School of Civil Engineering and Architecture Wuhan University of Technology Wuhan 430070 China

Based on the Sierpinski carpet and Menger sponge models, two categories of fractal models of rock and soil which are composed of the volume fractal model of pores, the volume fractal model of grains, pore-size or particle-size distribution fractal models are established and their relations are clarified in this paper. Through comparison and analysis, it is found that previous models can be unified by the two categories of fractal models, so the unified fractal models are formed. Experimental results presented by Katz indicate that the first category of fractal models can be used to express the fractal behavior of sandstone. A scanning electron microscope (SEM) will be used to study the microstructure of soft clay and it will be testified that the fractal behavior of soft clay suits the second category of fractal models.

关键词：分形模型孔隙分布 Sierpinski地毯土壤岩石模表示扫描电子显微镜谷物

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Electro-conductive crosslinked polyaniline/carbon nanotube nanofiltration membrane for electro-enhanced removal of bisphenol A

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Frontiers of Environmental Science & Engineering 2023年第5期17卷 81-92页

作者： Haiguang Zhang Lei Du Jiajian Xing gaoliang Wei Xie Quan Key Laboratory of Industrial Ecology and Environmental Engineering(Ministry of Education) School of Environmental Science and TechnologyDalian University of TechnologyDalian 116024China

Nanofiltration(NF)has attracted increasing attention for wastewater treatment and potable water ***,the high-efficiency removal of micropollutants by NF membranes is a critical *** to the adsorption and subsequent diffusion,some weakly charged or uncharged micropollutants,such as bisphenol A(BPA),can pass through NF membranes,resulting in low removal ***,an effective strategy is proposed to enhance the BPA removal efficiency of a crosslinked polyaniline/carbon nanotube NF membrane by coupling the membrane with *** membrane exhibited a 31.9%removal rate for 5 mg/L BPA with a permeance of 6.8 L/(m2·h·bar),while the removal rate was significantly improved to 98.1%after applying a voltage of 2.0 V to the ***,when BPA coexisted with humic acid,the membrane maintained 94%removal of total organic carbon and nearly 100%removal of BPA at 2.0 V over the entire filtration *** to continuous voltage applied to the membrane,an intermittent voltage(2.0 V for 0.5 h with an interval of 3.5 h)could achieve comparable BPA removal efficiency,because of the combined effect of membrane adsorption and subsequent electrochemical *** functional theory calculations and BPA oxidation process analyses suggested that BPA was adsorbed by two main interactions:π–πand hydrogen-bond *** adsorbed BPA was further electro-degraded into small organic acids or mineralized to CO_(2) and *** work demonstrates that NF membranes coupled with electro-assistance are feasible for improving the removal of weakly charged or uncharged micropollutants.

关键词： Nanofiltration Membrane Electro-assistance Adsorption Bisphenol A

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Periostin： a potent chemotactic factor for recruiting tumor-associated macrophag

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Protein & Cell 2015年第4期6卷 235-237页

作者： Tiantian Wu Qi Luo gaoliang Ouyang State Key Laboratory of Cellular Stress Biology Innovation Center for Cell Signaling Network School of Life Sciences Xiamen University Xiamen 361102 China Department of Surgical Oncology First Affiliated Hospital of Xiamen University Xiamen 361003 China

Glioblastoma （GBM） is the most common malignant primary brain tumor with a low five-year survival rate. Evidence from experimental and clinical studies indicates that glioma stem cells （GSCs） contribute to GBM tumor growth, therapeutic resistance and relapse （Bao et al., 2006; Gilbertson and Rich, 2007）. GSCs are enriched in a unique microenviron- ment known as the perivascular niche. Interestingly, a large number of tumor-associated macrophages （TAMs） are also distributed in the perivascular niche, indicating that crosstalk between GSCs and TAMs may have a critical role in GBM tumor progression. TAMs are abundant in most solid tumors and contribute to tumor progression in several ways, such as promoting invasion, angiogenesis and immunosuppression; however, the molecular link between TAM recruitment and GSCs has remained generally unclear. Writing in Nature Cell Biology, Zhou et al. provide new insights into where and how TAMs are recruited and educated by GSCs in GBMs （Zhou et al., 2015）（Fig. 1）.

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Comparison of EUV Photomask Metrology Between CD-AFM and TEM

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Nanomanufacturing and Metrology 2022年第2期5卷 91-100页

作者： gaoliang Dai Kai Hahm Lipfert Sebastian Markus Heidelmann Physikalisch-Technische Bundesanstalt 38116BraunschweigGermany Advanced Mask Technology Center GmbH&Co.KG 01109DresdenGermany ICAN Universität Duisburg-Essen47057DuisburgGermany

Accurate metrology of extreme ultraviolet (EUV) photomask is a crucial task. In this paper, two different methods for reference EUV photomask metrology are compared. One is the critical dimension atomic force microscopy (CD-AFM). In the measurements, the contribution of its AFM tip geometry is usually the dominant error source, as measured AFM images are the dilated results of measured structures by the AFM tip geometry. To solve this problem, a bottom-up approach has been applied in calibrating the (effective) AFM tip geometry where the result is traceably calibrated to the lattice constant of silicon crystals. The other is transmission electron microscopy (TEM). For achieving measurement traceability, structure features are measured in pairs in TEM images;thus the distance between the structure pair calibrated by a metrological AFM in prior can be applied to determine the magnification of the TEM image. In this study, selected photomask structures are calibrated by the CD-AFM, and then sample prepared and measured by high-resolution TEM nearly at the same location. The results are then compared. Of six feature groups compared, the results agree well within the measurement uncertainty, indicating excellent performance of the developed methodology. This research supports the development of a photomask standard, which is applied as a “reference ruler” with improved low measurement uncertainty in photomask fabs.

关键词： Extreme ultraviolet(EUV)photomask standard Traceable calibration Metrology Critical dimension(CD) Atomic force microscopy(AFM) Transmission electron microscopy(TEM) High precision Low measurement uncertainty

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