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Chinese Journal of Polymer Science 2015年第6期33卷 857-868页

作者：杜春慧 Xu-min Ma Chun-jin Wu mei-qiang cai Meng-xin Hu Ting Wang School of Environmental Science and Engineering Zhejiang Gongshang University Schoolof Food Science and Biotechnology Zhejiang Gongshang University

Polymerizable ionic liquid copolymer P（MMA-co-BVIm-Br） was synthesized by radical polymerization technique, and characterized by Fourier transform infrared spectrometry （FTIR）, 1H Nuclear magnetic resonance （1H-NMR） and gel permeation chromatography （GPC）. The resulting copolymer was used to prepare poly（vinylidene fluoride）（PVDF） blend membranes via a phase inversion method. The effects of the copolymer on the polymorphism, surface wettability and zeta potential （0 of the blend membranes were investigated by ATR-FTIR, contact angle instrument and zeta potential analyzer. Scanning electron microscopy （SEM and SEM-EDS） was also applied to investigate the morphology and the surface element changes of the fabricated membranes. The results indicated that P（MMA-co-BVIm-Br） copolymer existed on the surface of the membrane which made the blend membrane have a positive surface during the experimental pH range. The copolymer was also in favor of the formation of βcrystal phase in PVDF membranes. The contact angle experiment indicated that P（MMA-co-BVIm-Br） copolymer could switch the wettability of the blend membranes from hydrophilic to hydrophobic by exchanging Br- anion with PF6-. Compared with pure PVDF membranes, the water flux and water recovery flux of the blend membranes were enhanced obviously. The results from the flux recovery ratio （FR） and total fouling ratio （Rt） all suggested that the blend membranes had good anti-fouling properties.

关键词： PVDF membrane Polymerized ionic liquid Surface wettability Anti-fouling performance.

Hierarchical self-assembly of a collagen mimetic peptide （PKG）n（POG）2n（DOG）n via electrostatic interactions

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Frontiers of Computer Science 2011年第3期5卷 293-300页

作者： Ying SHI Song WANG Xiu-mei WANG qiang cai Fu-Zhai CUI Heng-De LI Department of Materials Science and Engineering Tsinghua University Beijing 100084 China

A new type of collagen mimetic peptide, （PKG）n（POG）2n（DOG）n, with charged-domain ends had been designed and successfully prepared in this work, which self-assembled into collagen-like triple helices homotrimers. The collagen-like homo- trimers underwent higher level of self-assembly via static electrical interaction between positive and negative domains. Transmission electron microscope （TEM） examinations showed three typical morphologies of homotrimer assembly, which were defined as film, bicontinuous and fibril morphology in this paper. The film was formed in the initial stage and gradually transformed to bicontinuous or fibril morphology to improve stability of the assemblies or decrease surface energy. Furthermore, mechanism of assembly process was proposed based on TEM observations and theoretical analyses of packing equation.

关键词： collagen mimetic peptide assembly morphology

Simultaneous Determination of Indandione Rodenticides in Human Serum by Liquid Chromatography-Electrospray Ionization Ion Trap Mass Spectrometry

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Simultaneous Determination of Indandione Rodenticides in Hum...

第四届上海国际分析化学研讨会

作者： Mi-cong Jin~(1*) Xiao-hong Chen~1 mei-qiang cai~2 1 Department of Chemistry,Xixi Campus,Zhejiang University,Hangzhou 310028,China, 2 College of Environmental Science and Engineering,Zhejiang Gongshang University,Hangzhou 310035,China.

Measurement of indandione rodenticides is crucial in the diagnosis and treatment of the rodenticides *** assays lack effective measurements for simultaneous analysis the indandiones,especially the *** target of this study was to establish a novel and selective method for simultaneous determination of indandione-type rodenticides(diphacinone, chlorophacinone,pindone and valone)in human serum by liquid chromatography-electrospray ionization ion trap mass spectrometry(LC-MS/MS).After addition of internal standard,the sample was extracted with 10% methanol in acetonitrile and was cleaned by solid-phase extraction(SPE).The analytes were separated on a rapid column and were infused into an ion trap mass spectrometer in the negative electrospray ionization *** limits of detection and quantification,recovery,linearity,precision,and stability were *** multiple-reaction monitoring ion pairs were m/z 339→167 for diphacinone,m/z 373→201 for chlorophacinone, m/z 229→172 for pindone and m/z 229→145 for *** were between 93 and 108%, the limits of detection were 0.1～0.7 ng/mL,and the limits of quantification were 0.3 to 2.0 ng/mL for the ***-and inter-day relative standard deviations(RSDs)were less than 7.8 and 11.5%,*** assay was linear in the range of 2.0～200.0 ng/mL with coefficients of determination(r>0.99)for all *** proposed method enables the unambiguous identification and quantification of the indandiones in both clinical and forensic *** method combines a new,rapid SPE procedure with an extremely fast chromatographic analysis,which is especially advantageous for clinical laboratories.

关键词： LC-MS/MS Indandione rodenticides Human serum Multiresidue analysis

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半滑舌鳎弧菌病病原的分离鉴定

中国兽医杂志 2017年第8期53卷 86-90页

作者：徐晓丽叶红梅侯纯强蔡琰钟文慧李贺密天津市水产技术推广站天津河西300221 天津渤海水产研究所天津经济技术开发区300457

从患病半滑舌鳎(Cynoglossus semilaevis)内脏中分离到2株优势菌株,人工感染试验证实菌株150803对半滑舌鳎具有致病性;采用形态学观察、生理生化特性分析、16S r RNA等方法对所分离菌株进行鉴定,结果显示,菌株150803为革兰阴性杆菌,生... 详细信息

从患病半滑舌鳎(Cynoglossus semilaevis)内脏中分离到2株优势菌株,人工感染试验证实菌株150803对半滑舌鳎具有致病性;采用形态学观察、生理生化特性分析、16S r RNA等方法对所分离菌株进行鉴定,结果显示,菌株150803为革兰阴性杆菌,生化特性与溶藻弧菌(Vibrio alginolyticus)较为接近,以hsp60基因为遗传标记构建的系统发育树将菌株150803与溶藻弧菌聚为一支,置信度为99%,采用特异性引物扩增溶藻弧菌dnaJ基因得到预期144 bp的基因片段。综合以上结果判定引起此次半滑舌鳎发病的病原为溶藻弧菌。对22种抗菌药物的敏感性试验表明,菌株150803对恩诺沙星、环丙沙星、庆大霉素、菌必治敏感,对氟苯尼考、呋喃唑酮、苯唑青霉素等具有抗性。

关键词：半滑舌鳎溶藻弧菌 hsp60 dnaJ

定向电场下W_(6)C_(6)团簇的超卤素调制及非线性光学特性

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原子与分子物理学报 2025年第3期42卷 72-76页

作者：蔡璧钧段宇静魏强重庆理工大学理学院重庆400050

本文采用密度泛函(DFT)方法研究了定向外电场(OEEF)对W_(6)C_(6)团簇几何结构、电子性质以及非线性光学响应(NLO)的影响.计算结果表明W_(6)C_(6)的结构在一定OEEF强度下可以保持稳定.OEEF可以增大W_(6)C_(6)团簇的电子亲和能(EA值),且... 详细信息

本文采用密度泛函(DFT)方法研究了定向外电场(OEEF)对W_(6)C_(6)团簇几何结构、电子性质以及非线性光学响应(NLO)的影响.计算结果表明W_(6)C_(6)的结构在一定OEEF强度下可以保持稳定.OEEF可以增大W_(6)C_(6)团簇的电子亲和能(EA值),且在特定强度下,OEEF可以将W_(6)C_(6)团簇转变为超卤素.通过对EA值的非线性拟合可以实现对W_(6)C_(6)团簇的连续调制.进一步对不同外电场下W_(6)C_(6)团簇的最高占据分子轨道(HOMO)和最低未占据分子轨道(LUMO)能级进行分析,发现OEEF降低了W_(6)C_(6)团簇LUMO能级是其EA值增大的主因.此外,OEEF可以显著增大W_(6)C_(6)团簇的平均极化率和第一超极化率,尤其是第一超极化率,改变其非线性光学性质.

关键词：定向外电场超原子密度泛函理论 NLO W_(6)C_(6)团簇

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Tetrahedral framework nucleic acids/hyaluronic acidmethacrylic anhydride hybrid hydrogel with antimicrobial and anti-inflammatory properties for infected wound healing

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International Journal of Oral Science 2024年第3期16卷 436-447页

作者： cai Qi qiang Sun Dexuan Xiao mei Zhang Shaojingya Gao Bin Guo Yunfeng Lin State Key Laboratory of Oral Diseases&National Center for Stomatology&National Clinical Research Center for Oral Diseases&West China Hospital of Stomatology Sichuan UniversityChengduChina Sichuan Provincial Engineering Research Center of Oral Biomaterials ChengduChina Department of Stomatology The First Medical CentreChinese PLA General HospitalBeijingChina

Bacterial resistance and excessive inflammation are common issues that hinder wound *** peptides(AMPs)offer a promising and versatile antibacterial option compared to traditional antibiotics,with additional anti-inflammatory ***,the applications of AMPs are limited by their antimicrobial effects and stability against bacterial *** are regarded as a promising drug delivery platform that could enhance the antibacterial properties and stability of ***,in this study,a composite hydrogel(HAMA/t-GL13K)was prepared via the photocross-linking method,in which tFNAs carry *** hydrogel was injectable,biocompatible,and could be instantly *** exhibited broad-spectrum antibacterial and anti-inflammatory properties by inhibiting the expression of inflammatory factors and scavenging ***,the hydrogel inhibited bacterial infection,shortened the wound healing time of skin defects in infected skin full-thickness defect wound models and reduced *** constructed HAMA/tFNA-AMPs hydrogels exhibit the potential for clinical use in treating microbial infections and promoting wound healing.

关键词： properties. hydrogel anhydride

Existence and uniqueness of S-asymptotically periodic α-mild solutions for neutral fractional delayed evolution equation

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Applied Mathematics(A Journal of Chinese Universities) 2022年第2期37卷 228-245页

作者： WEI mei LI qiang Department of Mathematics Northwest Normal UniversityLanzhou 730070China Department of Mathematics Shanxi Normal UniversityLinfen 041000China School of Mathematical Sciences Qufu Normal UniversityQufu 273165China

In this paper, we investigate a class of abstract neutral fractional delayed evolution equation in the fractional power space. With the aid of the analytic semigroup theories and some fixed point theorems, we establish the existence and uniqueness of the S-asymptotically periodic α-mild solutions. The linear part generates a compact and exponentially stable analytic semigroup and the nonlinear parts satisfy some conditions with respect to the fractional power norm of the linear part, which greatly improve and generalize the relevant results of existing literatures.

关键词： neutral fractional evolution equations S-asymptotically periodic problem α-mild solutions fractional power space analytic semigroup

A Class of Singular Coupled Systems of Superlinear Monge-Ampère Equations

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Acta Mathematicae Applicatae Sinica 2022年第4期38卷 925-942页

作者： mei-qiang FENG School of Applied Science Beijing Information Science&Technology UniversityBeijing 100192China

In this paper,we analyze the existence,multiplicity and nonexistence of nontrivial radial convex solutions to the following system coupled by singular Monge-Ampère equations{det D^(2)u_(1)=λh_(1)f_(1)(-u_(2))inΩ,det D^(2)u2=λh_(2)f_(2)(-u_(1)),u_(1)=u_(2)=0,onəΩinΩfor a certain range ofλ>0,hi are weight functions,f_(i)are continuous functions with possible singularity at 0 and satisfy a combined N-superlinear growth at∞,where i∈{1,2},Ωis the unit ball in *** establish the existence of a nontrivial radial convex solution for smallλ,multiplicity results of nontrivial radial convex solutions for certain ranges ofλ,and nonexistence results of nontrivial radial solutions for the caseλ≥*** asymptotic behavior of nontrivial radial convex solutions is also considered.

关键词： Two coupled Monge-Ampère equations Combined N-superlinear growth at∞ Singular weight functions Existence multiplicity and nonexistence Asymptotic behavior

Consensus model of social network group decision-making based on trust relationship among experts and expert reliability

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Journal of Systems Engineering and Electronics 2023年第6期34卷 1576-1588页

作者： WANG Ya cai mei JIAN Xinglian School of Management Science and Engineering Nanjing University of Information Science and TechnologyNanjing 210044China

Due to people’s increasing dependence on social networks,it is essential to develop a consensus model considering not only their own factors but also the interaction between *** external trust relationship among experts and the internal reliability of experts are important factors in *** paper focuses on improving the scientificity and effectiveness of decision-making and presents a consensus model combining trust relationship among experts and expert reliability in social network group decision-making(SN-GDM).A concept named matching degree is proposed to measure expert ***,linguistic information is applied to manage the imprecise and vague *** degree is expressed by a 2-tuple linguistic model,and experts’preferences are measured by a probabilistic linguistic term set(PLTS).Subsequently,a hybrid weight is explored to weigh experts’importance in a *** a consensus measure is introduced and a feedback mechanism is developed to produce some personalized recommendations with higher group ***,a comparative example is provided to prove the scientificity and effectiveness of the proposed consensus model.

关键词： social network group decision-making(SN-GDM) trust relationship expert reliability consensus model probabilistic linguistic term set(PLTS).

Understanding the Global Cancer Statistics 2018:implications for cancer control

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Science China(Life Sciences) 2021年第6期64卷 1017-1020页

作者： Zijie cai qiang Liu Breast Tumor Center Sun Yat-sen Memorial HospitalSun Yat-sen UniversityGuangzhou 510120China

Cancer incidence and mortality increase rapidly worldwide,making cancer the major cause of death in most *** the current cancer burden in different regions is necessary to find out potential risk factors and generate ... 详细信息

关键词： Cancer cancer mortality