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Science China(Technological Sciences) 2013年第1期56卷 20-24页

作者： JIAO TiFeng LI XuHui ZHANG QingRui LI QiuRong zhou jingxin GAO FaMing Hebei Key Laboratory of Applied Chemistry School of Environmental and Chemical EngineeringYanshan University State Key Laboratory of Solid Lubrication Lanzhou Institute of Chemical PhysicsChinese Academy of Sciences

Four achiral Cu(Ⅱ)-coordinated Schiff bases complexes containing aromatic structures were synthesized and their supramolecular assemblies at the air/water interface were *** the compounds could be spread on water surface although they have no alkyl *** Schiff base complex molecules with naphthyl groups tended to form J-aggregate in the Langmuir-Blodgett(LB) films transferred from water *** investigation of atomic force microscopy,a multilayer film or three-dimensional structures were *** was interesting to note that the LB films of achiral compound Cu-NA with naphthyl segment and without methyl groups transferred from water surface showed *** supramolecular chirality in the present LB films was suggested to be due to a cooperative stereoregular-stacking of the functional groups in a helical *** research work provides a helpful clue for regulating the nanostructures and supramolecular chiral assembly in organized films.

关键词： interfacial assembly Langmuir-Blodgett film supramolecular chirality Schiff base

Fabrication of hierarchical MXene-based AuNPs-containing core-shell nanocomposites for high efficient catalysts

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Green Energy & Environment 2018年第2期3卷 147-155页

作者： Kaikai Li Tifeng Jiao Ruirui Xing Guodong Zou Qianran Zhao jingxin zhou Lexin Zhang Qiuming Peng Hebei Key Laboratory of Applied Chemistry School of Environmental and Chemical Engineering Yanshan University State Key Laboratory of Metastable Materials Science and Technology Yanshan University State Key Laboratory of Biochemical Engineering Institute of Process Engineering Chinese Academy of Sciences

MXene is a new type of layered two-dimensional transition metal carbide materials differing from graphene, demonstrating intriguing chemical/physical properties. Here the chemical modification of MXene and next fabrication of core-shell MXene-COOH@(PEI/PAA)_n composites have been investigated. The obtained MXene-based composites were treated with gold nanoparticles to form MXene—COOH@(PEI/PAA)_n@AuNPs nanocomposites, and their catalytic properties for nitro-compounds were studied. The prepared nanocomposites demonstrated good catalytic activity and reproducibility, showing potential applications in composite catalysts and environmental fields.

关键词： MXene Core-shell composite Nitro-compounds Gold nanoparticle Catalytic activity

Chiral Interfacial Assembly of a Trigonal Schiff Base Compound with TPPS in Organized Molecular Films

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Chiral Interfacial Assembly of a Trigonal Schiff Base Compou...

Research on multi-objective optimization of GMAW welding of DH36 steel

2012 3rd International Conference on Information Technology for Manufacturing Systems(ITMS 2012)

作者： Tifeng Jiao jingxin zhou Hebei Key Laboratory of Applied Chemistry College of Environmental and Chemical EngineeringYanshan University State Key Laboratory of Solid Lubrication Lanzhou Institute of Chemical Physics Chinese Academy of Sciences

In order to investigate the chiral interfacial assembly of special amphiphile, a trigonal Schiff base compound with long alkyl chains was designed and synthesized, and its supramolecular assembly and interaction properties were investigated by spectral and morphological *** monolayers were obtained on pure water surface, in which flat and uniform domains were obtained for the *** an anionic tetrakis（4-sulfonatonphenyl）porphine（TPPS） was added into an acidic subphase, an in situ complex formation between the trigonal amphiphile and TPPS *** complex monolayers were transferred onto solid substrate and TPPS existed as J-aggregate and J-aggregate in the complex *** to the multisited positive charges in the spacer on acidic subphase, the complex films of trigonal amphiphile with TPPS appeared as short nanorod structures and formed two-dimensional（2D） conglomerate chiral domains.

关键词： Trigonal Schiff base Chiral assembly TPPS Langmuir-Blodgett film Supramolecular assembly Spectral measurement

来源： cnki会议评论

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China Welding 2021年第2期30卷 25-34页

作者： Jiang Jibin zhou jingxin Chen Changrong Yu Xiwei Lian Guofu Gao Xianfeng School of Mechanical and Automotive Engineering Fujian University of TechnologyFuzhou 350118China Fujian FuchuanYifan new energy equipment manufacturing Co. Ltd.Zhangzhou 363211China

Weld bead morphology plays an important role in welding procedure specification and welding process *** order to obtain the quantitative relationship between process parameters and weld morphology of DH36 marine steel plate,grey correlation method was used to study multiple morphology characteristics *** experimental runs were proposed according to orthogonal *** grey correlation theory,three response objectives,aspect ratio,depth of penetration and weld were transformed into a single grey correlation grade(GRG).The process parameters were quantitatively correlated to the GRG value and optimized with the target of maximum aspect ratio,minimum depth of penetration and maximum weld *** results show that the optimized weld bead morphology is better than other weld bead *** relative error of the predicted GRG with respect to the actual value is 5.06%,which further verifies the accuracy of the established *** microstructure and hardness analysis suggests that the optimized welded joint has obtained required mechanical *** research outcomes provide a theoretical basis for multi-objective optimization of arc welding morphology in practical applications.

关键词： DH36 steel gas metal arc welding orthogonal design grey correlation method weld bead morphology

Facile preparation and high performance of wearable strain sensors based on ionically cross-linked composite hydrogels

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Science China Materials 2021年第4期64卷 942-952页

作者： Jiahui Bai Ran Wang Mingxi Ju jingxin zhou Lexin Zhang Tifeng Jiao State Key Laboratory of Metastable Materials Science and Technology Yanshan UniversityQinhuangdao 066004China Hebei Key Laboratory of Applied Chemistry School of Environmental and Chemical EngineeringYanshan UniversityQinhuangdao 066004China

Flexible sensors that can respond to multiple mechanical excitation modes and have high sensitivity are of great significance in the fields of electronic skin and health *** multiple signal responses to skin such as strain and temperature remains an important ***,new multifunctional ion-crosslinked hydrogels with toughness and conductivity were designed and prepared in this work.A chemical gel with high mechanical strength was prepared by cross-linking acrylamide with N,N’-methylenebisacrylamide and ammonium *** addition,in order to enhance the conductive properties of the hydrogel,Ca^(2+),Mg^(2+)and Al^(3+)ions were added to the hydrogel during *** double-layer network makes this ionic hydrogel show excellent mechanical ***,the composite hydrogel containing Ca^(2+)can reach a maximum stretch of 1100%and exhibits ultra-high sensitivity(Sp=10.690 MPa^(-1)).The obtained hydrogels can successfully prepare wearable strain sensors,as well as track and monitor human *** present prepared multifunctional hydrogels are expected to be further expanded to intelligent health sensor materials.

关键词： hydrogel ionic cross-linking strain sensor E-skin

Hierarchical electrospun nanofibers treated by solvent vapor annealing as air filtration mat for high-efficiency PM2.5 capture

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Science China Materials 2019年第3期62卷 423-436页

作者： Xinxin Huang Tifeng Jiao Qingqing Liu Lexin Zhang jingxin zhou Bingbing Li Qiuming Peng State Key Laboratory of Metastable Materials Science and Technology Yanshan UniversityQinhuangdao 066004China Hebei Key Laboratory of Applied Chemistry School of Environmental and Chemical EngineeringYanshan UniversityQinhuangdao 066004China Department of Chemistry Science of Advanced Materials Doctoral ProgramCentral Michigan UniversityMount PleasantMI 48859USA

Recently, air pollution has become more serious and started to have a dramatic effect on the health of humans in many large cities. Generally, outdoor personal protection,such as commercial masks, cannot effectively prevent the inhalation of many pollutants. Particulate matter(PM) pollutants are a particularly serious threat to human health. Here we introduce a new efficient air filtration mat that can be used for outdoor protection. The new efficient air filter’s nanocomposite materials were successfully fabricated from poly(ε-caprolactone)/polyethylene oxide(PCL/PEO) using an electrospinning technique and solvent vapor annealing(SVA).SVA treatment endows the wrinkled fiber surface and enhances the PM2.5 capture capacity of protective masks. This nanowrinkled air filtration mat can effectively filter PM2.5 with a removal efficiency of 80.01% under seriously polluted conditions(PM2.5 particle concentration above 225 mg m-3).Our field test in Qinhuangdao indicated that the air filtration mat had a high PM2.5 removal efficiency under thick *** to commercial masks, the fabricated SVA-treated PCL/PEO air filter mat demonstrated a simpler and ecofriendly preparation process with excellent degradation characteristics, showing wide potential applications with a high filtration efficiency.

关键词： electrospinning nanofiber mat solvent vapor annealing air filtration PM2.5 removal

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Gemini型两亲分子超分子组装研究进展

化学通报 2010年第2期73卷 148-153页

作者：周靖欣焦体峰李晓博周娟燕山大学环境与化学工程学院河北省应用化学重点实验室秦皇岛066004

综述了国内外对Gemini型两亲分子在超分子组装方面的研究进展。总结了Gemini分子的体相组装、界面组装以及近几年应用领域的研究进展;着重介绍了基因传递、纳米材料模板、降解剂、药物缓释以及胶凝剂的制备等方面的应用进展;对相关研究... 详细信息

综述了国内外对Gemini型两亲分子在超分子组装方面的研究进展。总结了Gemini分子的体相组装、界面组装以及近几年应用领域的研究进展;着重介绍了基因传递、纳米材料模板、降解剂、药物缓释以及胶凝剂的制备等方面的应用进展;对相关研究领域的主要研究成果做了一些探讨和分析;为更加深入探索和研究Gemini型两亲分子的超分子组装提供参考信息。

关键词： Gemini型两亲分子超分子化学超分子组装

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具有共同刻划特征的几类紧性和近似紧性

华侨大学学报（自然科学版） 2006年第2期27卷 130-132页

作者：周景新周宇鹏北华大学理学院吉林吉林132033 哈尔滨工业大学计算中心黑龙江哈尔滨150001

对几类具有某种覆盖(？)都有子覆盖,都有局部有限某种加细定义空间的各类紧性和仿紧性的空间类进行讨论．研究它们之间的内在联系,并且补充一些空间类．

关键词： WS-闭空间特征空间近似紧空间 S闭空间

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父母参与新生儿疼痛管理的研究进展

中国护理管理 2019年第1期19卷 151-155页

作者：周菁鑫严洁俞群上海交通大学医学院附属新华医院上海市200092

本文阐述了父母参与新生儿疼痛管理的方式、优势和需求,从护士的重要角色作用,缺乏有效评估,父母的知识、态度和行为,护士和父母之间的信息不匹配等方面综述了影响父母参与新生儿疼痛管理的因素,旨在为实施最佳的疼痛管理提供依据,对今... 详细信息

本文阐述了父母参与新生儿疼痛管理的方式、优势和需求,从护士的重要角色作用,缺乏有效评估,父母的知识、态度和行为,护士和父母之间的信息不匹配等方面综述了影响父母参与新生儿疼痛管理的因素,旨在为实施最佳的疼痛管理提供依据,对今后的护理管理提供参考。

关键词：父母参与新生儿疼痛

1964例围产期孕妇阴道分泌物常见病原体分析

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中国微生态学杂志 2016年第8期28卷 962-964页

作者：周景欣抚顺市中心医院检验科辽宁抚顺113006

目的探讨围产期孕妇阴道分泌物常见病原体的感染状况,减少不良妊娠的发生。方法假丝酵母菌(C)、滴虫(T)检测采用涂片法,细菌性阴道炎(BV)检测采用唾液酸酶法,淋球菌(NG)检测采用平板培养法,解脲支原体(UU)检测采用人工培养法,沙眼衣原体... 详细信息

目的探讨围产期孕妇阴道分泌物常见病原体的感染状况,减少不良妊娠的发生。方法假丝酵母菌(C)、滴虫(T)检测采用涂片法,细菌性阴道炎(BV)检测采用唾液酸酶法,淋球菌(NG)检测采用平板培养法,解脲支原体(UU)检测采用人工培养法,沙眼衣原体(CT)检测采用乳胶免疫层析法。结果 1 964例围产期孕妇中病原体感染者共360例,占总人数的18.33%(C 9.41%、T 0.46%、BV 6.36%、NG 0.00%、UU 4.53%、CT 1.73%)。其中单一病原体感染者为281例,占总人数的14.31%;两种或两种以上病原体感染者为79人,占总人数的4.02%。结论抚顺地区围产期孕妇阴道分泌物病原体构成复杂,病原体主要以假丝酵母菌和细菌性阴道炎为主,其次是解脲支原体,部分孕妇可同时感染多种病原体。

关键词：围产期阴道病原体