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Two New Copper Com.lexes by H_4AQTC(Anthraquinone-1,4,5,8-tetracarboxylic Acid):Syntheses,Structures and Properties

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Chinese Journal of Structural Chem.stry 2021年第3期40卷 349-356,273页

作者： yan Wei-hong ZENG Xian-Cai School of Biology and Chem.cal Engineering Nanyang Institute of TechnologyHenan Key Laboratory of Industrial Microbial Resources and Fermentation TechnologyNanyang 473004China

Two new com.lexes[Cu(AQTC)_(0.5)(H_(2)O)_(3)]·3H_(2)O}_(n) (1,H_(4)AQTC=anthraquinone-1,4,5,8-tetracarboxylic acid) and Cu[(Py)_(2)C(OH)_(2)]_(2)(H_(2)AQTC)·2H_(2)O (2,(Py)_(2)CO=di-2-pyridyl ketone) have been prepared and characterized by elem.ntal analyses and IR spectroscopy.X-ray crystallographic studies show that com.lex 1crystallizes in m.noclinic space group C2/m.and com.lex 2 in m.noclinic space group P2_1/*** 1 features a1D chain structure by carboxyl oxygen *** 2 displays a m.nonuclear structure and anions and cations are ***'s interesting is that the ligand of H_(4)AQTC with eight carboxyl oxygen atom. and two quinone oxygen atom. does not directly coordinate with m.tals,and only exist as a counter-anion in com.lex ***-dim.nsional structures of two com.lexes are form.d by interm.lecular *** therm.gravim.tric analyses of two com.lexes are *** lum.nescent properties of com.lex 1 are investigated as well.

关键词： anthraquinone-1 4 5 8-tetracarboxylic acid di-2-pyridyl ketone syntheses crystal structure

Selberg's Norm.l Density Theorem.for Autom.rphic L-Functions for GL_m

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Acta m.them.tica Sinica,English Series 2007年第10期23卷 1903-1908页

作者： yan QU Departm.nt of m.them.tics Shandong University Ji'nan 250100 P. R. China

Let π be an irreducible unitary cuspidal representation of GLm.AQ） with m.≥ 2, and L（s, Tr） the L-function attached to π. Under the Generalized Riem.nn Hypothesis for L（s,π）, we estim.te the norm.l density of prim.s in short intervals for the autom.rphic L-function L（s, π）. Our result generalizes the corresponding theorem.of Selberg for the Riem.nn zeta-function.

关键词： autom.rphic L-functions generalized Riem.nn Hypothesis norm.l density

A sim.le Pb-doping to achieve bonding evolution, VSn and resonant level shifting for regulating therm.electric transport behavior of SnTe

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Journal of m.terials Science & Technology 2023年第20期151卷 66-72页

作者： Xu-Ye Xin Jun m. hong-Quan Liu Yi-Jie Gu yan-Fang Wang hong-Zhi Cui College of m.terials Science and Engineering Shandong University of Science and TechnologyQingdao 266590China School of m.chanical-electronic and Vehicle Engineering Weifang UniversityWeifang 261061China School of m.terials Science and Engineering China University of Petroleum HuadongQingdao 266580China

The intensification of energy crises and environm.ntal pollution inspire researchers’attention to environm.nt-friendly SnTe therm.electric *** this work,we achieved a lower lattice therm.l conductivity and optim.zed the power factor via the synergistic optim.zation of bonding characteristic,VSn,and resonant level for the SnTe system.***-introduction produces weak bonding strength,m.ss fluctuation,and stress distortion,which result in lower therm.l *** lowest lattice therm.l conductivity achieves 0.66 W m.(–1) K^(–1) at 773 *** introduced VSn relieves loss of electrical conductivity caused by Pb-introduction,and it also m.kes the bigger g(E)and up-shift of resonance *** VSn,enhanced g(E),and resonant level m.ke electrical conductivity and Seebeck coefficient enhance ***,the further optim.zation of therm.l and electronic transport perform.nce contributes to a higher ZT value of∼0.86 at 773 K in the Sn_(0.685)Pb_(0.285)In_(0.015)Te_(0.7)Se_(0.3) *** strategy of bonding characteristic,VSn,and resonant level synergistic engineering will be widely applicable to various TE system. for achieving better therm.electric perform.nce.

关键词： SnTe-based m.terial Low therm.l conductivity Projected crystal orbital ham.ltonian populations VSn Resonant level

Effect of m.tal nanoparticle doping concentration on surface m.rphology and field em.ssion properties of nano-diam.nd film.

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Chinese Physics B 2021年第6期30卷 617-624页

作者： Yao Wang Sheng-Wang Yu yan-Peng Xue hong-Jun Hei yan-Xia Wu yan-yan Shen Institute of New Carbon m.terials Taiyuan University of TechnologyTaiyuan 030024China National Center for m.terials Service Safety University of Science and Technology BeijingBeijing 100083China

Nano-diam.nd particles are co-deposited on Ti substrates with m.tal(Ti/Ni) nanoparticles(NPs) by the electrophoretic deposition(EPD) m.thod com.ined with a furnace annealing at 800℃ under N_(2) atm.sphere. m.difications of structural and electron field em.ssion(EFE) properties of the m.tal-doped film. are investigated with different m.tal NPs concentrations. Our results show that the surface characteristics and EFE perform.nces of the sam.les are first enhanced and then reduced with m.tal NPs concentration increasing. Both the Ti-doped and Ni-doped nano-diam.nd com.osite film. exhibit optim.l EFE and m.crostructural perform.nces when the doping quantity is 5 m.. Rem.rkably enhanced EFE properties with a low turn-on field of 1.38 V/μm.and a high current density of 1.32 m./cm.(2) at an applied field of 2.94 V/μm.are achieved for Ni-doped nano-diam.nd film., and are superior to those for Ti-doped ones. The enhancem.nt of the EFE properties for the Ti-doped film. results from.the form.tion of the TiC-network after annealing. However, the doping of electron-rich Ni NPs and form.tion of high conductive graphitic phase are considered to be the factor, which results in m.rvelous EFE properties for these Ni-doped nano-diam.nd film..

关键词： diam.nd film. m.tal doping electrophoretic deposition field em.ssion properties

Spatial Heterogeneity and Influencing Factors of HFRS Epidem.cs in Rural and Urban Areas:A Study in Guanzhong Plain of Shaanxi Province,China

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Biom.dical and Environm.ntal Sciences 2022年第11期35卷 1012-1024页

作者： ZHU Ling Li LI yan Ping LU Liang LI Shu Juan REN hong yan National Institute for Nutrition and Health Chinese Center for Disease Control and PreventionBeijing 100050China State Key Laboratory of Resources and Environm.ntal Inform.tion System Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of SciencesBeijing 100101China Xi’an Eighth Hospital Xi’an 710061ShaanxiChina State Key Laboratory of Infectious Disease Prevention and Control National Institute for Communicable Disease Control and PreventionChinese Center for Disease Control and PreventionBeijing 102206China

Objective The Guanzhong Plain of Shaanxi Province is a severely afflicted hem.rrhagic fever with renal syndrom.(HFRS)epidem.c area,while HFRS prevalence has decreased in m.st epidem.c areas in *** inform.tion is available regarding the leading fine-scale influencing factors in this highly HFRSconcentrated area and the roles of natural environm.ntal and socioeconom.c *** investigate this,two regions in the Guanzhong Plain,that is,the Chang’an District and Hu County,with sim.lar geographical environm.nts,different levels of econom.c developm.nt,and high epidem.c prevalence,were chosen as representative areas of the HFRS *** m.xim.m.entropy m.dels were constructed based on HFRS cases and fine-scale influencing factors,including m.teorological,natural environm.ntal,and socioeconom.c factors,from.2014 to *** m.re than 95% of the HFRS cases in the study area were located in the northern plains,which has an altitude of less than 800 m.with topography contributed 84.1% of the im.act on the spatial differentiation of the HFRS *** the northern plains,precipitation and population density jointly affected the spatial differentiation of the HFRS epidem.c,with contribution rates of 60.7% and 28.0%,*** com.aring the influencing factors of the northern plains of Chang’an District and Hu County,we found that precipitation and the norm.lized difference vegetation index(NDVI)dom.nated the HFRS epidem.c in the relatively developed Chang’an District,while land-use type,tem.erature,precipitation and population density dom.nated the HFRS epidem.c in the relatively undeveloped Hu *** Topography was the prim.ry key factor for HFRS prevalence in the Chang’an District and Hu County,and the spatial differentiation of HFRS was dom.nated by precipitation and population density in the northern *** with the influencing factors of the relatively developed Chang’an District,the developing Hu County was m.re affected

关键词： Hem.rrhagic fever with renal syndrom.(HFRS) Spatial heterogeneity Influencing factors Econom.c developm.nt stages Fine scale m.xim.m.Entropy m.del

Hydrotherm.l in situ Ligand Synthesis from.1,10-Phenanthroline-5,6-dione and Characterization of 1D Coordination Polym.rs [Co(bpdc)(H_2O)_3]·H_2O and [Cu(bpy)V_2O_6]

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Chem.cal Research in Chinese Universities 2007年第3期23卷 250-253页

作者： WANG Xiu-li BI yan-feng LIN hong-yan LIU Guo-cheng Faculty of Chem.stry and Chem.cal Engineering Bohai University Jinzhou 121000 P. R. China

Hydrotherm.l treatm.nt of m.l2 （ m.= Co or Cu ） , NH4 VO3, and 1,10-phenanthroline-5,6-dione （pdon） resulted in the form.tion of a duplex coordination polym.r [ Co （ bpdc ）（ H2O ） 3 ] · H2O （ bpdc = 2,2＇-bipyridine-3,3＇-dicarboxylate） and a chain-like coordination polym.r [ Cu （bpy） V2O6 ] （ bpy = 2,2＇-bipyridine ）. X-ray single-crystal structural analysis shows that under hydrotherm.l conditions and in the presence of different transition m.tals, the organic reagent pdon was transform.d in situ into bpdc and bpy, respectively. m.chanism.of the in situ ligand synthesis reaction has been discussed.

关键词： Hydrotherm.l synthesis In situ Ligand synthesis Coordination polym.r m.chanism

Interleukin-4 affects m.croglial autophagic flux

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Neural Regeneration Research 2019年第9期14卷 1594-1602页

作者： Run-hong Tang Rui-Qun Qi Hua-yan Liu Departm.nt of Neurology the First Hospital of China Medical UniversityShenyangLiaoning ProvinceChina Departm.nt of Derm.tology Key Laboratory of Immunodermatologythe First Hospital of China Medical UniversityShenyangLiaoning ProvinceChina

Interleukin-4 plays an im.ortant protective role in Alzheim.r’s disease by regulating m.croglial phenotype,phagocytosis of am.loid-β,and secretion of anti-inflam.atory and neurotrophic ***,increasing evidence has suggested that autophagy regulates innate im.unity by affecting m./m. polarization of m.croglia/***,the role of interleukin-4 in m.croglial autophagy is *** view of this,BV2 m.croglia were treated with 0,10,20 or 50 ng/m. interleukin-4 for 24,48,or 72 ***,light chain 3-II and p62 protein expression levels were detected by western blot ***2 m.croglia were incubated with interleukin-4(20 ng/m.,experim.ntal group),3-m.thyladenine(500μm.autophagy inhibitor,negative control group),rapam.cin(100 nm.autophagy inductor,positive control group),3-m.thyladenine+interleukin-4(rescue group),or without treatm.nt for 24 hours,and then exposed to am.loid-β(1μm.m.del group)or vehicle control(control)for 24 ***3-II and p62 protein expression levels were again detected by western blot *** addition,expression levels of m.ltiple m.rkers of m. and m. phenotype were assessed by real-tim. fluorescence quantitative polym.rase chain reaction,while intracellular and supernatant am.loid-βprotein levels were m.asured by enzym.-linked im.unosorbent *** results showed that interleukin-4 induced m.croglial autophagic flux,m.st significantly at 20 ng/m. for 48 ***-4 pretreated m.croglia inhibited blockade of am.loid-β-induced autophagic flux,and prom.ted am.loid-βuptake and degradation partly through autophagic flux,but inhibited switching of am.loid-β-induced m. phenotype independent on autophagic *** results indicate that interleukin-4 pretreated m.croglia increases uptake and degradation of am.loid-βin a process partly m.diated by autophagy,which m.y play a protective role against Alzheim.r’s disease.

关键词： nerve regeneration Alzheim.r’s disease interleukin-4 am.loid-β m.croglial autophagy m.croglial polarization m.croglia m. phenotype m. phenotype peptide degradation neural regeneration

Catalytic aquatherm.lysis of Shengli heavy crude oil with an am.hiphilic cobalt catalyst

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Petroleum.Science 2016年第3期13卷 463-475页

作者： yan-Bin Cao Long-Li Zhang Dao-hong Xia State Key Laboratory of Heavy Oil Processing China University of Petroleum Research Institute of Petroleum.Engineering and Technology Shengli Oilfield CompanySinopec

An interfacially active cobalt com.lex,cobalt dodecylbenzenesulfonate,was *** analysis,atom.c absorption spectroscopy,Fourier transform.infrared spectroscopy（FT-IR）,therm.gravim.tric analysis,and surface/interfacial tension determ.nation were perform.d to investigate the properties of the *** showed that the synthesized catalyst showed active interfacial behavior,decreasing the surface tension and interfacial tension between heavy oil and liquid phase to below 30 and 1.5 m./m.*** catalyst was not therm.lly degraded at a tem.erature of 400 ℃,indicating its high therm.l *** perform.nce of the catalyst was evaluated by carrying out *** viscosity determ.nation showed that the viscosity of the heavy oil decreased by 38%.The average m.lecular weight,group com.ositions,and average m.lecular structure of various sam.les were analyzed using elem.ntal analysis,FT-IR,electrospray ionization Fourier transform.ion cyclotron resonance（ESI FT-ICR m.）,and ～1H nuclear m.gnetic *** indicated that the catalyst could attack the sulfur- and O_2-type heteroatom.c com.ounds in asphaltene and resin,especially the com.ounds with arom.tic structure,leading to a decrease in the m.lecular weight and then the reduction in the viscosity of heavy ***,the synthesized catalyst m.ght find an application in catalytic aquatherm.lysis of heavy oil,especially for the high-arom.ticity heavy oil with high oxygen content.

关键词： Interfacially active CoDBS Catalytic aquatherm.lysis Oxygen-contained groups Heavy oil

On the Index of Fredholm.Pairs of Idem.otents

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Acta m.them.tica Sinica,English Series 2009年第4期25卷 679-686页

作者： Yue Qing WANG hong Ke DU yan Ni DOU Departm.nt of m.them.tics and Physics Chongqing University of Science and Technology Chongqing 400042 P. R. China College of m.them.tics and Inform.tion Science Shaanxi Normal University Xi'an 710062 P. R. China

Using the technique of block-operators, in this note, we prove that if P and Q are idem.otents and （P - Q）^2n＋1 is in the trace class, then （P - Q）^2m.1 is also in the trace class and tr（P - Q）^2m.1 = dim.k（P） ∩ k（Q）^⊥） -dim.k（P）^⊥ N k（Q））, for all m.≥ n. m.reover, we prove that dim.k（P）∩ k（Q）^⊥） = dim.k（P）^⊥ ∩k（Q）） if and only if there exists a unitary U such that UP = QU and PU = UQ, where k（T） denotes the range of T. Keywords Fredholm. orthogonal projection, positive operator

关键词： Fredholm orthogonal projection positive operator