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A Matthew MXene(Ti_(3)C_(2)T_(x))Lamellar Membrane as a Potassium-Sieving Amplifier

Engineering 2024年第11期42卷 213-222页

作者： zong lu Haoyu Wu Yanying Wei Haihui Wang School of Chemistry and Chemical Engineering&Guangdong Provincial Key Lab of Green Chemical Product Technology&State Key Laboratory of Pulp and Paper Engineering South China University of TechnologyGuangzhou 510640China Beijing Key Laboratory for Membrane Materials and Engineering Department of Chemical EngineeringTsinghua UniversityBeijing 100084China

Transport channels with ultrahigh K^(+)selectivity over other ions play a crucial role for living beings,but constructing ionic channels with promising K^(+)selectivity and permeability remains a ***,an asymmetric bilayer membrane based on MXene(Ti 3C2Tx)lamellar channels consisting of a recognition layer(RL)on top of an enhancement layer(EL)exhibits an amazing Matthew effect:amplification of the preferred transport of K^(+),resulting in an excellent K^(+)-separation *** K^(+)ion is selected by the 1-aza-18-crown-6 ether-modified RL,owing to preferential affinity energy,and then rapidly trans-ported as a hydrated ion through the EL,based on the confinement *** undesired ions such as Na^(+)are hindered from entering the RL by the preferred K^(+)occupation of the crown *** MXene(Ti_(3)C_(2)T_(x))-based Matthew membrane presents high K^(+)-permeation rates of 0.1-0.2 mol∙m2∙h1,with a significant K^(+)/Na^(+)selectivity of *** molecular separation mechanism of the Matthew membrane is investigated deeply to explore the nature of the Matthew amplification effect on K^(+)sieving,where the precise matching of the RL and EL within the membrane governs the fast K^(+)permeation with good *** asymmetric structure of our Matthew membrane is the key to understanding the biolog-ical function of ion channels for precise and fast ion transport,which will guide us in the creation of arti-ficial ion channels or membranes.

关键词： MXene(Ti_(3)C_(2)T_(x))membrane Membrane separation Ion sieving K^(+)selectivity

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Toughening of vinyl ester resins by two-dimensional MXene nanosheets

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Frontiers of Chemical Science and Engineering 2022年第11期16卷 1651-1658页

作者： Yurun Dai Heng Fang zong lu Zhuohong Yang Yanying Wei School of Chemistry and Chemical Engineering Guangdong Provincial Key Lab of Green Chemical Product TechnologyState Key Laboratory of Pulp and Paper EngineeringSouth China University of TechnologyGuangzhou 510640China Key Laboratory for Bio-based Materials and Energy of Ministry of Education College of Materials and EnergySouth China Agricultural UniversityGuangzhou 510642China

Two-dimensional nanosheets are highly effective tougheners for vinyl ester *** toughening effect is related to the high specific surface area and unique two-dimensional planar structure of the *** this study,a coupling agentγ-(2,3-epoxypropoxy)propytrimethoxysilane(Kh-560)was used to modify MXene nanosheets(M-MXene)for use in toughening vinyl ester *** mechanical properties,including the tensile strength,flexural strength,Young’s modulus and elongation,of neat vinyl ester resin and vinyl ester resin modified with MXene and M-MXene were *** results showed that modification significantly improved the mechanical properties of the vinyl ester *** tensile and flexural strengths of the MXene-nanosheet-modified vinyl ester resin were 27.20%and 25.32%higher,respectively,than those of the neat vinyl ester *** coupling agent improved the interfacial compatibility between the MXene nanosheets and vinyl ester resin,which resulted in the tensile and flexural strengths of the M-MXene-nanosheet-modified vinyl ester resin being 52.57%and 54.60%higher,respectively,than those of the neat vinyl ester resin for a loading quantity of nanosheets of only 0.04 wt%,which is economically *** main mechanisms by which the nanosheets toughen the resin are crack deflection and crack pinning.

关键词： MXene nanosheets 2D material vinyl ester resin modification coupling agent

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Angle of repose in the numerical modeling of ballast particles focusing on particle-dependent specifications:Parametric study

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Particuology 2022年第6期20卷 39-50页

作者： Peyman Aela lu zong Morteza Esmaeili Mohammad Siahkouhi Guoqing Jing School of Civil Engineering Beijing Jiaotong UniversityBeijing 100044China School of Railway Engineering Iran University of Science and TechnologyTehran 16846-13114Iran

The discrete element method(DEM)is widely used in the realistic simulation of the shapes of *** have considered the simplification of particle shapes owing to the high computational cost of such *** this regard,the modeling of calibrated particles is a major challenge owing to the simultaneous effects of particle *** angle-of-repose test is a standard test method used to calibrate the bulk behavior of simulated *** the present study,the hollow-cylinder(slump)test was modeled for the verification of discrete element *** this regard,a sensitivity analysis was conducted for all effective parameters,namely the static friction,rolling friction,restitution coefficient,sphericity,roundness,particle size distribution,and number of ballast *** results indicate that the rolling friction,roundness,number of particles,and size of particles are the most important parameters in the determination of the angle of repose(AOR).For particles in the range of ballast(20-60 mm),the effect of the number of particles on the angle of repose is reduced when the number is greater than ***,it is concluded that angular particles can be replaced with sub-angular particles(R≈0.2-0.45)with a higher rolling friction coefficient(μ_(r)>0.14).

关键词： Ballast Angle of repose Calibration Hollow cylinder test Friction coefficients Shape factors

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Two-dimensional Cu-porphyrin nanosheet membranes for nanofiltration

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Nano Research 2023年第5期16卷 6290-6297页

作者： Jiahao Cai Shizheng Song Lijie Zhu Qipeng lu zong lu Yanying Wei Haihui Wang School of Chemistry&Chemical Engineering Guangdong Provincial Key Lab of Green Chemical Product TechnologyState Key Laboratory of Pulp and Paper EngineeringSouth China University of TechnologyGuangzhou 510640China School of Instrument Science and Opto-Electronics Engineering Beijing Information Science and Technology UniversityBeijing 100192China School of Materials Science and Engineering University of Science and Technology BeijingBeijing 100083China Beijing Key Laboratory for Membrane Materials and Engineering Department of Chemical EngineeringTsinghua UniversityBeijing 100084China

A kind of two-dimensional(2D)metal-organic framework(MOF)material,Cu-meso-tetrakis(4-carboxyphenyl)porphine(Cu-TCPP)nanosheets with wrinkled and flat morphologies are used as building blocks to assemble membranes by vacuum filtration(VF)and electrophoretic deposition(EPD)as energy-efficient nanofiltration(NF)membranes to remove dyes from *** the nanosheets with wrinkled structure can provide additional water transport channels,thereby increasing the water permeance,in the premise of a high rejection(>97.0%)for the dye brilliant blue G(BBG)(1.60 nm×1.90 nm),the water permeance of the membrane assembled by the wrinkled nanosheets(~1170 nm)is about 4 times that of the membrane assembled by the flat nanosheets(~530 nm),reaching 16.39 L·m^(−2)·h^(−1)·bar^(−1).Additionally,the use of the relatively flat nanosheets and the membrane preparation method of electrophoretic deposition is more conducive to stack nanosheets orderly and reduce ***,the water permeance of the membrane prepared by EPD(~1170 nm)with flat nanosheets is about twice that of the membrane prepared by VF(~530 nm),achieving 9.40 L·m^(−2)·h^(−1)·bar^(−1)with similar rejection(>97.0%)of dye evans blue(EB)(3.10 nm×1.20 nm).Furthermore,these membranes still exhibit good separation performance at high pressure of 0.6 *** with diverse structures and various membrane fabrication processes provide new directions for the separation performance optimization of 2D MOF materials for water purification.

关键词： two-dimensional material membrane metal-organic framework(MOF) nanofiltration nanosheet morphology electrophoretic deposition

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Comparison of conformal and intensity-modulated techniques for simultaneous integrated boost radiotherapy of upper esophageal carcinoma

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World Journal of Gastroenterology 2004年第8期10卷 1098-1102页

作者： Wei-HuaFu lu-HuaWang zong-MeiZhou Jian-RongDai Yi-MinHu lu-JunZhao DepartmentofRadiationOncology CancerInstitute(Hospital)PekingUnionMedicalCollegeChineseAcademyofMedicalSciencesBeijing10021China

AIM:To compare intensity-modulated radiotherapy (IMRT) with conformal radiotherapy (CRT) by investigating the dose profiles of primary tumors,electively treated regions,and the doses to organs at risk. METHODS:CRT and IMRT plans were designed for five patients with upper esophageal *** each patient, target volumes for primary lesions (67.2 Gy) and electively treated regions (50.4 Gy) were *** experienced planner manually designed one CRT *** IMRT plans were generated with the same dose-volume constraints,but with different beam *** including dose distributions,dose volume histograms (DVHs) and conformity index were compared. RESULTS:The plans with three intensity-modulated beams were discarded because the doses to spinal cord were lager than the tolerable dose 45Gy,and the dose on areas near the skin was up to *** the number of intensity beams increased to five,IMRT plans were better than CRT plans in terms of the dose conformity and homogeneity of targets and the dose to *** dose distributions changed little when the beam number increased from five to seven and nine. CONCluSION:IMRT is superior to CRT for the treatment of upper esophageal carcinoma with simultaneous integrated boost (SIB).Five equispaced coplanar intensity-modulated beams can produce desirable dose *** primary tumor can get higher equivalent dose by SIB technique. The SIB-IMRT technique shortens the total treatment time, and is an easier,more efficient,and perhaps a less error- prone way in delivering IMRT.

关键词：上食管癌放射疗法等角增强调节技术综合治疗影像学检查

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Organic Near-Infrared luminescent Materials Based on Excited State Intramolecular Proton Transfer Process

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Chinese Journal of Chemistry 2022年第20期40卷 2468-2481页

作者： zong-lu Che Chang-Cun Yan Xue-Dong Wang Liang-Sheng Liao Institute of Functional Nano&Soft Materials(FUNSOM) Jiangsu Key Laboratory for Carbon-Based Functional Materials&DevicesSoochow UniversitySuzhouJiangsu215123 China Macao Institute of Materials Science and Engineering Macao University of Science and TechnologyTaipa999078 Macao SARChina

Organic near-infrared(NIR)luminescent materials have captured intense research interest owing to their potential applications in optical communication,data storage,bioimaging,sensing and night *** state intramolecular proton transfer(ESIPT)process with absorption in normal form while emission in tautomer form can lead to a distinct redshift emission,based on which,a lot of organic NIR luminescent materials were *** of attractive features such as ultrahigh sensitivity to the surroundings,large Stokes shift,and inherent four level system,ESIPT based NIR luminescent materials are supposed to be ideal fluorescent probes and gain *** this review,first,organic near-infrared luminescent materials based on ESIPT process are summarized according to the core ***,recent advances of ESIPT-based organic near-infrared fluorescent probes and organic NIR lasers are ***,the current challenges and prospects of ESIPT-based organic NIR luminescent materials are introduced.

关键词： Exited-state intramolecular proton transfer Near-infrared emission luminescent Fluorescent probes Organic laser

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Recent progress of two-dimensional nanosheet membranes and composite membranes for separation applications

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Frontiers of Chemical Science and Engineering 2021年第4期15卷 793-819,F0004页

作者： Wei Wang Yanying Wei Jiang Fan Jiahao Cai zong lu Li Ding Haihui Wang School of Chemistry&Chemical Engineering South China University of TechnologyGuangzhou 510640China

Two-dimensional(2D)materials have emerged as a class of promising materials to prepare high-performance 2D membranes for various separation *** precise control of the interlayer nano-channel/sub-nanochannel between nanosheets or the pore size of nanosheets within 2D membranes enables 2D membranes to achieve promising molecular sieving *** date,many 2D membranes with high permeability and high selectivity have been reported,exhibiting high separation *** review presents the development,progress,and recent breakthrough of different types of 2D membranes,including membranes based on porous and non-porous 2D nanosheets for various *** mechanism of 2D membranes and their fabrication methods are also *** but not the least,challenges and future directions of 2D membranes for wide utilization are discussed in brief.

关键词： membrane separation 2D membranes,2D materials nanosheet

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EFFECT OF ROSIGLITAZONE AND METFORMIN ON CLOMIPHENE CITRATE RESISTANCE IN WOMEN WITH POLYCYSTIC OVARY SYNDROME

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Journal of Pharmaceutical Analysis 2005年第1期17卷 62-65,71页

作者： Zheng, Jianhuai Cao, Zuansun zong, lu Research Laboratory of Reproductive Endocrinology First Hospital of Xi'an Jiaotong University Xi'an 710061 China

Objective: To evaluate the impacts of rosiglitazone and metformin on ovarian response, hirsutism and insulin action in women with polycystic ovary syndrome (PCOS). Methods: Ninety women resistant to clomiphene citrate with PCOS were randomized, 40 cases to rosiglitazone group, 50 cases to meformin group. Rosiglitazone and metformon were administered for 6 months in combination with clomiphene citrate on cycle day 5th to 9th, respectively. The clinical evaluations were performed monthly. Reproductive hormone, serum glucose and insulin levels were observed before and after treatment. The data were analyzed using repeated analysis of variance (ANOVA). Results: There were significant changes in reducing hirsutism score, serum testosterone level, LH/FSH ratio, and restoration of ovarian ovulation after metformin or rosiglitazone administration respectively (P0.05). Conclusion: Rosiglitazone can increase insulin sensitivity. Metformon may reduce BMI. They all restore regular menstrual cycles, increase pregnancy rate, and reduce testosterone and LH concentration in women with polycystic ovary syndrome.

关键词： Metformin Polycystic ovary syndrome Rosiglitazone

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T300A polymorphism of ATG16L1 and susceptibility to inflammatory bowel diseases:A meta-analysis

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World Journal of Gastroenterology 2010年第10期16卷 1258-1266页

作者： Cheng, Jia-Fei Ning, Yue-Ji Zhang, Wei lu, zong-Hai Lin, Lin Nanjing Med Univ Dept Gastroenterol Affiliated Hosp 1 Nanjing 210029 Jiangsu Prov Peoples R China

AIM:To evaluate the association of the autophagy- related 16-like 1 (ATG16L1 ) T300A polymorphism (rs2241880) with predisposition to inflammatory bowel diseases (IBD) by means of ***: Publications addressing the relationship between rs2241880/T300A polymorphism of ATG16L1 and Crohn's disease (CD) and ulcerative colitis (UC) were selected from the MEDLINE and EMBASE data-bases. To make direct comparisons between the data collected in these studies, the individual authors were contacted when necessary to generate a standardized set of data from these studies. From these data, odds ratio (OR) with 95% confidence interval (CI) were ***: Twenty-five studies of CD were analyzed, 14 of which involved cases of UC. The variant G allele of ATG16L1 was positively associated with CD (OR=1.32, 95% CI: 1.26-1.39, P<0.00001) and UC (OR =1.06, 95% CI:1.01-1.10, P=0.02). For child-onset IBD, a higher G allele frequency was found for cases of CD (OR=1.35, 95% CI: 1.16-1.57, P=0.0001) than for cases of UC (OR = 0.98, 95% CI: 0.81-1.19, P = 0.84) relative to ***: The ATG16L1 T300A polymorphism contributes to susceptibility to CD and UC in adults, but different in children, which implicates a role for autophagy in the pathogenesis of IBD.

关键词： ATG16L1 Inflammatory bowel diseases Crohn’s disease Ulcerative colitis Meta-analysis

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High Performance of PVA Nanocomposite Reinforced by Janus-like Asymmetrically Oxidized Graphene:Synergetic Effect of H-bonding Interaction and Interfacial Crystallization

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Chinese Journal of Polymer Science 2022年第4期40卷 373-383页

作者： Ning Zhang Bin Zhang Yong Pang Hong-Sheng Yang lu zong Yong-Xin Duan Jian-Ming Zhang Key Laboratory of Rubber-Plastics Ministry of Education/Shandong Provincial Key Laboratory of Rubber-plasticsQingdao University of Science&TechnologyQingdao 266042China State Key Laboratory of Bio-fibers and Eco-textiles Qingdao UniversityQingdao 266071China

Macromolecule nanocrystal network and strong interfacial interaction are always beneficial to enhance the mechanical property of polymer-based ***(vinyl alcohol)(PVA),a typical biocompatible semicrystalline polymer,is an ideal candidate for preparing high performance polymer-based ***,the rich hydrogen bonds between PVA matrix and graphene oxide(GO)can disrupt the formation of PVA nanocrystal ***,it remains a great challenge to achieve both strong and tough PVA-GO ***,by introducing a novel Janus-like amphiphilic graphene oxide(JGO),both hydrogen bonding and interfacial crystallization have been constructed between JGO sheets and PVA *** from amphiphilic interfacial interaction and the enhanced crystal network,both PVA-JGO dried films and their swollen hydrogel films show superior mechanical properties than those of traditional PVA-GO ***-JGO dried films exhibit a 264%improvement of toughness at a JGO loading of 1 wt%.Meanwhile,the corresponding PVA-JGO swollen hydrogel films display simultaneous improvement of nearly 8 times increase of tensile strength and 20 times increase of toughness compared to traditional PVA-GO *** work indicates multiple interfacial interactions and macromolecule crystal networks can be concurrent in PVA nanocomposites by innovative modification of nanofillers,providing a new strategy to construct PVA nanocomposites with high strength and high *** integration of outstanding mechanical and swelling resistance properties on PVA-JGO nanocomposite films render their promising applications,such as packaging and toughening hydrogel materials.

关键词： Poly(vinyl alcohol) Janus-like graphene oxide Hydrogen-bonding interactions Interfacial crystallization Amphiphilicity

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