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Journal of Environmental Sciences 2018年第3期30卷 236-245页

作者： Xueqin Bao Zh.n qin Tiansh. Zh.u Jingjing Deng Sch.ol of Ecological and Environmental Sciences East China Normal University

In th.s work,th. gold nanoparticles（Au-NPs）were in-situ generated on th. surface of MnO2nanosh.ets to form MnO2/Au-NPs nanocomposite in a simple and cost-effective *** experiments were carried out to optimize th. oxidation of basic dye（Meth.lene Blue（MB））,including th. molar ratio of MnO2to ch.oroauric acid（h.u Cl4）,th. p h.of th. solution and th. effect of initial *** th. optimal condition,th. h.gh.st degradation efficiency for MB ach.eved to 98.9%with.n 60 min,wh.ch.was obviously better th.n commercial MnO2powders（4.3%）and MnO2nanosh.ets（74.2%）.Th. enh.nced oxidative degradation migh. attribute to th. in-situ generation of ultra-small and h.gh.y-dispersed Au-NPs wh.ch.enlarged th. synergistic effect and/or interfacial effect between MnO2nanosh.ets and Au-NPs and facilitated th. uptake of electrons by MnO2from MB during th. oxidation,th.s validating th. application of MnO2/Au-NPs nanocomposite for direct removal of organic dyes from wastewater in a simple and convenient fash.on.

关键词： MnO2/Au-NPs nanocomposite In-situ generation Dye degradation Synergistic effect and inteffacial effect Enh.nced oxidative degradation

Preparation,ch.racterization and performance of poly(m-ph.nylene isoph.h.lamide)/organically modified montmorillonite nanocomposite membranes in removal of perfluorooctane sulfonate

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Journal of Environmental Sciences 2016年第8期28卷 126-133页

作者： qin Luo Yanxia Liu Guixia Liu Ch.ngwei Zh.o Key Laboratory of Applied Ch.mistry and Nanotech.ology at Universities of Jilin Province Changchun University of Science and Technology State Key Laboratory of Environmental Aquatic Ch.mistry Research Center for Eco-Environmental Sciences Chinese Academy of Sciences

Nanocomposite membranes containing poly（m-ph.nylene isoph.h.lamide）（PMIA） and organically modified montmorillonite（OMMT） were prepared by a combination of solution dispersion and wet-ph.se inversion meth.ds, and th. effects of OMMT addition on th. properties and performance of fabricated nanofiltration membranes were investigated. Th. membranes were ch.racterized by contact angle measurements, scanning electron microscopy（SEM）, atomic force microscopy（AFM）, th.rmogravimetric analysis, and zeta *** performance of th. membranes was elucidated by th. removal of perfluorooctane sulfonate（PFOS） at neutral p h. Increasing OMMT concentration improved th. th.rmal stability and h.droph.licity of th. membranes. Th. permeation and rejection of PFOS were significantly improved. Th. performance of fabricated nanofiltration membranes in removal of PFOS varied depending on th. solute and membrane properties as well as solution conditions. Finally,a comparison between fabricated membranes and a commercial NF membrane（ESNA1-K1,h.decanme） proved th.t th. OMMT addition is a convenient procedure for producing nanocomposite membranes with.superior properties and performance.

关键词： Nanofiltration membrane Organically modified montmorillonite PFOS removal

AR mutations in 28 patients with.androgen insensitivity syndrome(Prader grade 0–3)

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Science Ch.na(Life Sciences) 2017年第7期60卷 700-706页

作者： Yi Wang Ch.nxiu Gong Xiou Wang Miao qin Beo'ing Key Laboratory for Genetics of Birth.Defects Center of Endocrinology Genetics and Metabolism Beo'ing Children's Hospital The Capital Medical University National center for children's health Beijing 100045 China

We investigated th. androgen receptor(AR) gene mutation profiles of Ch.nese patients exh.biting severe androgen insensitivity syndrome(AIS) ph.notypes. Th. present study enrolled 28 patients with.genetically diagnosed AIS, wh. presented with.severe ph.notypes(Prader grade 0–3). Patients and some family members were screened via amplification and sequencing of th.ir AR exons 1–8, including th. corresponding intronic flanking regions. Luteinizing(Lh., follicle-stimulating(FSh., and testosterone(T) h.rmone levels were found to be sligh.ly, but not significantly, h.gh.r in patients with.complete androgen insensitivity syndrome(CAIS) th.n in patients with.partial androgen insensitivity syndrome(PAIS)(P>0.05). We identified 24 different AR mutations, including 12 th.t were novel. Ten patients(cases 2, 3, 10, 28, 11, 12, 19, 20, 24, and 25) were found to carry five recurrent mutations(p.Y572 S, p.P914 S, p.S176 R, p.Y782 N, and p.R841h.; of th.se, p.Y572 S, p.S176 R, and p.Y782 N were novel. Among th. mutations identified in patients with.CAIS, six(66.7%) were ch.racterized as single-nucleotide missense mutations, and six(66.7%) were found to be located in th. AR ligand-binding domain(LBD). Among th. mutations identified in patients with.PAIS, 15(93.8%) were found to be missense, and 11(68.8%) were found to be located in th. LBD. Patients 10 and 28 were determined to h.rbor th. same missense mutation(p.P914S), but were diagnosed with.CAIS and PAIS, *** h.rmone levels were sligh.ly, but not significantly, elevated in patients with.CAIS compared to th.se with.PAIS. Missense mutations spanning AR exons 1–8 were th. predominant form of identified mutations, and th.se were mostly located in th. AR LBD. Approximately 50% of th. identified mutations were novel, and h.ve enrich.d th. AR gene-mutation database. Patients h.rboring identical mutations were in some instances found to exh.bit divergent ph.notypes.

关键词： androgen insensitivity syndrome androgen receptor gene novel mutations genotype-ph.notype correlation

Identify real gravitational wave events in th. LIGO-Virgo catalog GWTC-1 and GWTC-2 with.convolutional neural network

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Frontiers of ph.sics 2022年第5期17卷 1-8页

作者： Meng-qin Jiang Nan Yang Jin Li College of Ph.sics Chongqing UniversityChongqing 401331China Department of Electronical Information Science and Tech.ology Xingtai UniversityXingtai 054001China

In recent years,mach.ne learning models h.ve been introduced into th. field of gravitational wave(GW)data *** th.s paper,we apply th. convolutional neural network(CNN)to LIGO O1,O2,O3a data analysis to search.th. released 41 GW events wh.ch.are emitted from binary black h.le(BBh.mergers(h.re we exclude th. events from binary neutron star(BNS)mergers,and th. events th.t are not detected simultaneously by h.nford(h.and Livingston(L)detectors),and use time sliding meth.d to reduce th. false alarm rate(FAR).According to th. results,th. 41 confirmed GW events of BBh.mergers can be classified successfully by our CNN ***,th.ough.restricting th. number of consecutive prewarning from sequential samples intercepted continuously in LIGO O2 real time-series and vetoing th. coincidences of noise from h.and L,th. FAR is limited to be less th.n once in 2 *** is h.lpful to promote LIGO real time data processing.

关键词： convolutional neural network gravitational wave events false alarm rate

Performance of CO_2 absorption in a diameter-varying spray tower

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Ch.nese Journal of Ch.mical Engineering 2017年第8期25卷 1109-1114页

作者： Xiaomei Wu Yunsong Yu Zh.n qin Zaoxiao Zh.ng Sch.ol of Ch.mical Engineering and Tech.ology Xi'an Jiaotong University State Key Laboratory of Multiph.se Flow in Power Engineering Xi'an Jiaotong University

Th. application of spray towers for CO2 capture is a development trend in recent years. h.wever, most of th. previous jobs were conducted in a cylindrical tower by using a single spray nozzle, wh.se configuration and performance is not good enough.for industrial application. To solve th.s problem, th. present work proposed a diameter-varying spray tower and a new spray mode of dual-nozzle opposed impinging spray to enh.nce th. h.at and mass transfer of CO2 absorption process. Experiments were performed to investigate th. mass transfer performance （in terms of th. CO2 removal rate （η） and th. overall mass transfer coefficient （KGae）） of th. improved spray tower under various operating conditions. Experimental results sh.wed th.t th. liquid to gas ratio and mole ratio of MEA to C02 are major factors, wh.ch.affect th. absorption performance and th. maximums of η and KGae th.t are 94.0% and 0.574 kmol. m^-3·h.-1·kPa^-1, respectively, under th. experimental conditions. Furth.rmore, new correlations to predict th. mass transfer coefficient of th. proposed spray tower are developed in various CO2 concentrations with.a Pearson Correlation Coefficient over 90%.

关键词： Carbon dioxide Absorption Diameter-varying spray tower Mass transfer

Effect of ch.orine content of ch.oroph.nols on th.ir adsorption by mesoporous SBA-15

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Journal of Environmental Sciences 2012年第8期24卷 1411-1417页

作者： qingdong qin Ke Liu Dafang Fu h.iying Gao Sch.ol of Civil Engineering Southeast UniversityNanjing 210096China Department of Man-Mach.ne and Environment Engineering Nanfing University of Aeronautics and AstronauticsNanfing 210016China

Studies on th. effect of th. ch.orine content of ch.oroph.nols （CPs） on th.ir adsorption from aqueous solution by mesoporous SBA-15 are important in understanding th. mech.nisms of CP adsorption. In th.s study, th.ee CPs with.different degrees of ch.orine content （i.e., 2-ch.oroph.nol, 2,6-dich.oroph.nol and 2,4,6-trich.oroph.nol） were investigated. Th. effects of parameters such.as temperature and solution ph.were studied. Th. results sh.wed th.t CP adsorption by SBA- 15 increased with.increasing number of ch.orine substituents and depended strongly on th. temperature and solution ph. Th.rmodynamic parameters such.as Gibbs free energy ch.nge （AGO）, enth.lpy ch.nge （△h.0） and entropy ch.nge （△S^0） were also calculated. By comparison of th. adsorption coefficient of CPs with.varying ph.sical-ch.mical properties （size, h.droph.bicity and electron density）, we propose th.t h.droph.bic interactions between CPs and th. SBA-15 surface, as well as electron donor-acceptor （EDA） complexes between oxygen of th. siloxane surface of SBA-15 （e--donor） and th. n-system of th. CPs （e--acceptor）, were dominant adsorption mech.nisms.

关键词： ch.oroph.nols mesoporous SBA-15 adsorption ph temperature

Microstructure and microh.rdness of nanostructured Al-4.6Cu-Mn alloy ribbons

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International Journal of Minerals,Metallurgy and Materials 2015年第8期22卷 860-867页

作者： Zh.ng-wei Ch.n qin-ying Fan Kai Zh.o State Key Laboratory of Solidification Processing Northwestern Polytechnical University

Th. microstructural ch.racteristics and microh.rdness of nanostructured Al-4.6Cu-Mn ribbons produced by melt spinning were investigated using field-emission gun scanning electron microscopy, transmission electron microscopy, and h.rdness testing, and th. results were compared to th.se of similar ribbons manufactured by direct-ch.ll casting. It is sh.wn th.t th. nanostructure of th. as-melt-spun ribbons consists of α-Al dendrites with.a secondary dendrite arm spacing of approximately 0.55-0.80 μm and ultrafine eutectic crystals of a nanosized scale of approximately 100-200 nm on dendritic boundaries. Th. solidification time and cooling rate of 46-μm-th.ck ribbons were estimated to be 1.3 × 10-6 s and 4.04 × 106 K·s-1, respectively. At an aging temperature of 190°C, th. coh.rent θ″ ph.se in aged ribbons gradually transforms into nanoscale θ′-ph.se platelets as th. aging time is extended from 2 to 8 h. th. rod-like morph.logy of th. T(Al20Cu2Mn3) dispersoid with.120-160-nm diameter also forms, wh.ch.results in peak aging h.rdness. Th. precipitation beh.viors of aged ribbons cannot be ch.nged at th. h.gh.cooling rates of as-cast ribbons. h.wever, a finer and more uniformly distributed microstructure and a supersaturated solid solution at a h.gh.cooling rate can sh.rten th. time required to obtain a certain aging h.rdness before peak h.rdness.

关键词： aluminum-copper-manganese alloys nanoribbons melt

On decoupled or coupled control of bank-to-turn missiles

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Science Ch.na(Information Sciences) 2015年第5期58卷 195-207页

作者： DUAN Zh.Sh.ng h.ANG Lin YANG JianYing qin GuoZh.ng State Key Lab for Turbulence and Complex Systems and Department of Mech.nics and Engineering Science College of Engineering Peking University

In th.s paper, th. differences between decoupled and coupled control of bank-to-turn(BTT) missiles h.ve been studied in detail from th.ee aspects: stabilizability, linear quadratic regulator(LQR) control and tracking control. It is found th.t for some parameters th. BTT missile can be controlled by a decoupled way,especially for stabilizability and LQR control. h.wever, for some oth.rs, th. BTT missile cannot be decoupled and a coupled control meth.d is needed. Th.refore, for a practical fligh. control system, th. decouplability sh.uld be studied before giving a decoupled control meth.d. In addition, in order to avoid th. disadvantages of LQR control meth.d, an improved h.controller design meth.d is given. Combined with.tracking control problem, a new h.control meth.d is establish.d for trajectory tracking.

关键词： BTT missile decoupled control coupled control tracking control

Preparation of Ni/bentonite catalyst and its applications in th. catalytic h.drogenation of nitrobenzene to aniline

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Ch.nese Journal of Ch.mical Engineering 2016年第9期24卷 1195-1200页

作者： Yuexiu Jiang Xiliang Li Zuzeng qin h.ngbing Ji Guangxi Key Laboratory of Petroch.mical Resource Processing and Process Intensification Tech.ology School of Chemistry and Chemical Engineering Guangxi University Sch.ol of Ch.mistry and Ch.mical Engineering Sun Yat-sen University

Ni supported on bentonite was prepared by th. impregnation meth.d with.different nickel contents, applied to th. h.drogenation of nitrobenzene to aniline in a fixed-bed reactor, and it was ch.racterized by X-ray diffraction（XRD）, h.-temperature programmed reduction（h.-TPR）, and X-ray ph.toelectron spectrometry（XPS）. Th. results sh.wed th.t Ni/bentonite catalyst with.20 wt% nickel content provided a h.gh.r conversion of nitrobenzene and selectivity of aniline compared to oth.r catalysts. NiO was th. precursor of th. active component of th. catalyst, and th. small crystallite size as well as th. h.gh.y dispersed NiO on th. Ni/bentonite-20 catalyst, contributed to th. catalytic performance. Th. h.drogenation of nitrobenzene was carried out at 300℃ with.a h.2 gaseous h.urly space velocity of 4800 ml·（g cat）^-1·h.-1and a nitrobenzene liquid h.urly space velocity of4.8 ml·（g cat）^-1·h.-1 over Ni/bentonite-20. A 95.7% nitrobenzene conversion and 98.8% aniline selectivity were obtained. Wh.le th. nitrobenzene liquid h.urly space velocity was 4.8 ml·（g cat）^-1·h.-1, th. yield of aniline was more th.n 95.0% during a 10-h.ur reaction.

关键词： Ni/bentonite catalyst Catalysis Support h.drogenation Nitrobenzene

Validation of glaucoma-like features in th. rat episcleral vein cauterization model

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Ch.nese Medical Journal 2014年第2期127卷 359-364页

作者： Bai Yujing Zh. Yingting Ch.n qin Xu Jing Marinko V. Sarunic Uri h. Saragovi Zh.o Yeh.ng Key Laboratory of Vision Loss and Restoration Ministry of Education Department of Oph.h.lmology Peking University People's Hospital Beijing 100044 China State Key Laboratory of Oph.h.lmology Zhongshan Ophthalmic Center Sun Yat-sen University Guangzhou Guangdong 510060 China Department of Oph.h.lmology First'Affiliated Hospital of Nanjing Medical University Nanjing Jiangsu 210029 China Engineering Science Simon Fraser University Burnaby BC Canada V5A 1S6 Department of Ph.rmacology and Th.rapeutics Department of Oncology and the Cancer Center Bloomfield Centre for Research in Aging Lady Davis Institute-Jewish General Hospital McGill University Montreal Quebec Canada H3T 1E2

Background Glaucoma,an irreversible optic nerve neuropath.,always results in *** study aimed to evaluate glaucoma-like features in th. rat episcleral vein cauterization （EVC） model by multiple in vivo and in vitro *** Wistar rat was used in th.s *** elevated intraocular pressure （IOP） was induced by cauterization of th.ee episcleral *** was monitored with.Tono-Pen XL ***-dependent ch.nges to th. neuronal retinal layers were quantified by Fourier domain-optical coh.rence *** function of retina was evaluated by electroretinogram （ERG）.Survival of retinal ganglion cells （RGCs） was quantified by retrograde *** study was performed with.retinal sections stained with.h.matoxylin-eosin,glial fibrillary acidic protein,and neuronal nuclear *** and aqueous h.mor protein were extracted and cytotoxic protein tumor necrosis factor alph. （TNF-α） and alph.-2 macroglobulin （α2m） were measured with.Western *** EVC is a relatively facile intervention,with.low failure rates （＜5％）.After surgical intervention,ch.onic mild lOP elevation （about 1.6-fold over normal,P ＜0.05） was induced for at least 6 weeks with.ut requiring a second *** lOP causes ch.onic and progressive loss of RGCs （averaging about 4％ per week）,progressive th.nning of neuronal retinal layers （3-5 μm per week）,and reduction of a-and b-wave in *** meth.d can also induce glial cell activation and alterations of inflammation proteins,such.as TNF-α and α*** EVC meth.d can establish.a robust,reliable,economic and h.gh.y reproducible glaucomatous animal model.

关键词： glaucoma experimental animal model retinal neurons rat