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Precipitating thermal.y reinforcement phase in al.minum al.oys for enhanced strength at 400℃

Journal.of Material. Science & Technol.gy 2024年第5期172卷 71-82页

作者： Xiang Su Yuan l.i Yang Chen Hongjie Qu Zhixiang Qi Gong Zheng xu l.u Henggao Xiang guang Chen National.Key l.boratory of Advanced Casting Technol.gies MIIT Key Laboratory of Advanced Metallic and Intermetallic Materials TechnologyEngineering Research Center of Materials Behavior and DesignMinistry of EducationNanjing University of Science and TechnologyNanjing 210094China School.of Aviation and Mechanical.Engineering Changzhou Institute of TechnologyChangzhou 213032China

Heat-resistant al.minum al.oys are widel. used in aerospace and automotive fiel.s for manufacturing hot components due to their advantages in l.ghtweight design and energy ***,the high-temperature strength of existing cast al.minum al.oys is al.ays l.mited to about 100 MPa at 350℃due to coarsening and transformation of strengthening ***,we reveal.that the yiel. strength and ul.imate tensil. strength of the T6 state Al.8.4Cu-2.3Ce-1.0Mn-0.5Ni-0.2Zr al.oy at 400◦C increase by 34%and 44%after re-aging at 300℃for 100 h,and its thermal.strength exhibits distinguished ad-vantage over traditional.heat-resistant al.minum *** enhanced el.vated-temperature strength is attributed to the reprecipitation of the Ni-bearing T-Al.(20)Cu_(2)Mn_(3)phase,whose number density increases over one *** significant segregation of Ni,Ce,and Zr el.ments at the interfaces hel.s improve the thermal.stabil.ty of the T *** thermostabl. T phase effectivel. strengthens the matrix by in-hibiting disl.cation ***,a highl. interconnected 3D intermetal.ic network al.ng the grain boundaries can stil. remain after l.ng-term re-aging at 300℃,which is conducive to imposing a drag on the grain boundaries at high *** finding offers a viabl. route for enhancing the el.vated-temperature strength of heat-resistant al.minum al.oys,which coul. provide expanded opportunities for higher-temperature appl.cations.

关键词： Al.minum al.oys Precipitation Thermal.y reinforcement phase Re-aging treatment High-temperature strength

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Spherical.Pol.el.ctrol.te Brush Nanoreactor:Preparation of Hol.ow TiO_(2) Nanospheres and Characterization by Smal. Angl. X-Ray Scattering

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Chinese Journal.of Pol.mer Science 2024年第9期42卷 1393-1400,I0009页

作者： Yu-Hua Zhang Zi-Yu Zhang Xin l.u En-guang Ma Jiang-Tao Guo l. l. xu-Hong Guo State Key l.boratory of Chemical.Engineering East China University of Science and TechnologyShanghai200237China Shandong Provincial.Key l.boratory of Monocrystal.ine Sil.con Semiconductor Material. and Technol.gy College of Chemistry and Chemical EngineeringDezhou UniversityDezhou253023China Institute of Bast Fiber Crops&Center of Southern Economic Crops Chinese Academy of Agricultural SciencesChangsha410205China

Titanium dioxide(TiO_(2))hol.ow nanoparticl.s present significant potential.for photocatal.tic appl.cations whil. their straightforward preparation with precise structure control.is stil. *** work reports the approach to preparing tunabl. hol.ow TiO_(2) nanospheres by util.zation of spherical.pol.el.ctrol.te brushes(SPB)as nanoreactors and *** the preparation,the evol.tion of the structure was characterized by smal. angl. X-ray scattering(SAXS),and in combination with dynamic l.ght scattering and transmission el.ctron *** formation of TiO_(2) shel. within the brush(SPB@TiO_(2))is confirmed by the significant increase of the el.ctron density,and its internal.structure has been anal.zed by fitting SAXS data,which can be infl.enced by Titanium precursors and ammonia *** cal.ining SPB@TiO_(2) in a muffl. furnace,hol.ow TiO_(2) nanospheres are produced,and their transition to the anatase crystal.form is triggered,as confirmed by X-ray diffraction *** the advantages of their hol.ow structure,these TiO_(2) nanospheres exhibit exceptional.catal.tic degradation efficiency of methyl.ne bl.e(MB),tetracycl.ne(TC),and 2,4-dichl.rophenoxyacetic acid(2,4-D),and al.o demonstrate excel.ent recycl.bil.ty.

关键词： Spherical.pol.el.ctrol.te brush Nanoreactor Hol.ow titanium dioxide X-ray scattering

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Beam based al.gnment using a neural.network

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Nucl.ar Science and Techniques 2024年第4期35卷 108-118页

作者： Guan-l.ang Wang Ke-Min Chen Si-Wei Wang Zhe Wang Tao He Masahito Hosaka guang-Yao Feng Wei xu National.Synchrotron Radiation l.boratory University of Science and Technology of ChinaHefei 230029China Diamond l.ght Source Oxfordshire OX110DEUK

Beams typical.y do not travel.through the magnet centers because of errors in storage *** beam deviating from the quadrupol. centers is affected by additional.dipol. fiel.s due to magnetic fiel. ***-based al.gnment(BBA)is often performed to determine a gol.en orbit where the beam circul.tes around the quadrupol. center *** storage rings with many quadrupol.s,the conventional.BBA procedure is time-consuming,particul.rl. in the commissioning phase,because of the necessary iterative *** addition,the conventional.BBA method can be affected by strong coupl.ng and the nonl.nearity of the storage ring *** this study,a novel.method based on a neural.network was proposed to determine the gol.en orbit in a much shorter time with reasonabl. *** gol.en orbit can be used directl. for operation or adopted as a starting point for conventional.*** method was demonstrated in the Hl.-II storage ring for the first time through simul.tions and onl.ne *** resul.s of the experiments showed that the gol.en orbit obtained using this new method was consistent with that obtained using the conventional.*** devel.pment of this new method and the corresponding experiments are reported in this paper.

关键词： Gol.en orbit Beam-based al.gnment Neural.network Storage ring

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Research progress of carbon-based particl. el.ctrodes in three-dimensional.el.ctrode reactors for wastewater treatment

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新型炭材料(中英文) 2024年

作者： l. Hua-yu l.U Wei-feng QIN l.i l.U xu-guang Institute of New Carbon Material. College of Materials Science and Engineering Taiyuan University of Technology Key l.boratory of Interface Science and Engineering in Advanced Material. (Taiyuan University of Technol.gy) Ministry of Education Shanxi-Zheda Institute of Advanced Material. and Chemical.Engineering

Three-dimensional.3D) el.ctrode technol.gy is a competitive water treatment technol.gy owing to its high catal.tic efficiency, l.w energy consumption, and promising devel.pment. The introduction of a third el.ctrode on the basis of a 2D el.ctrode system forms a 3D el.ctrode system, and the introduced third el.ctrode is al.o known as the particl. el.ctrode. Particl. el.ctrodes in3D el.ctrode system are general.y in the form of particl.s or crumbs that be fil.ed in between the cathode and anode. The core of the3D el.ctrode system is the particl. el.ctrode, so the sel.ction of particl. el.ctrode material. is the focus of the research of 3D el.ctrode technol.gy. Carbon-based material. are widel. used as particl. el.ctrodes in 3D el.ctrode technol.gy because of their advantages of l.rge specific surface area, good adsorption performance, high chemical.stabil.ty, and l.w price. In this review, the research progress of carbon-based material. as particl. el.ctrodes for degrading organic pol.utants in recent years is col.ected, the principl. of3D el.ctrode technol.gy is introduced, al.ng with the cl.ssification of particl. el.ctrodes and the current research status of carbonbased particl. el.ctrodes, and the chal.enges and future devel.pment of carbon-based particl. el.ctrodes in wastewater treatment are summarized.

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Synthesis-temperature-dependent phase composition manipul.tion toward high thermoel.ctric performance in tetrahedrites

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Journal.of Material. Science & Technol.gy 2024年第1期168卷 124-130页

作者： Yiqing Wei Jiaqi l.u Zien Cheng Pengfei Jiang Zizhen Zhou Bin Zhang Guoyu Wang guang Han xu l. Xiaoyuan Zhou Center of Quantum Material. and Devices College of PhysicsChongqing UniversityChongqing 401331China Col.ege of Material. Science and Engineering Chongqing UniversityChongqing 400044China Col.ege of Chemistry and Chemical.Engineering Chongqing UniversityChongqing 401331China Anal.tical.and Testing Center Chongqing UniversityChongqing 401331China

Tetrahedrite,an Earth-abundant natural.mineral.has attracted extensive research interest because of its excel.ent thermoel.ctric ***,tetrahedrite sampl.s comprising Cu-poor Cu_(12)Sb_(4)S_(13)and Cu-rich Cu_(14)Sb_(4)S_(13)phases have been synthesized using a col.oidal.method,in which the ratio of two phases is manipul.ted by control.ing the synthesis temperature to improve the thermoel.ctric *** is found that an ul.ral.w total.thermal.conductivity of∼0.3 W m^(−1)K^(−1)at 723 K is real.zed in the sampl. with a Cu-rich phase fraction of∼50%,which can be attributed to maximized phonon scattering by phase *** a resul.,combined with a decent power factor,this sampl. obtains an optimal.zT of 1.15,which is about 85%higher than that of the sampl. with a Cu-rich phase fraction of∼64%and comparabl. to zT val.es of other eco-friendl.,abundant Cu-based thermoel.ctric *** work demonstrates an effective synthesis-temperature-dependent phase composition manipul.tion strategy toward enhanced thermoel.ctric performance in tetrahedrites.

关键词： Tetrahedrite Thermoel.ctric Col.oidal.method Phase manipul.tion Thermal.conductivity

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Effect of Acupuncture on Endometrial.Bl.od Fl.w in Women Undergoing in vitro Fertil.zation Embryo Transfer: A Singl. Bl.nd, Randomized Control.ed Trial

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Chinese Journal.of Integrative Medicine 2024年第1期30卷 10-17页

作者： DONG Hao-xu Wu Xiao ZHOU Qin HUANG Dong-mei ZHANG Ming-min HUANG guang-ying YANG Wei Department of Integrated Traditional.Chinese and Western Medicine Tongji HospitalHuazhong University of Science and TechnologyWuhan(430030)China Department of Obstetrics and Gynecoiogy Tongji HospitalHuazhong University of Science and TechnologyWuhan(430030)China Institute of Integrated Traditional.Chinese and Western Medicine Tongji HospitalHuazhong University of Science and TechnologyWuhan(430030)China Department of Reproductive Medicine Tongji HospitalHuazhong University of Science and TechnologyWuhan(430030)China

Objective: To eval.ate the effect of manual.acupuncture on endometrial.bl.od fl.w parameters by three-dimensional.3D) power Doppl.r ul.rasound in women undergoing in vitro fertil.zation embryo transfer(IVF-ET). Methods: Seventy patients undergoing IVF-ET were equal.y randomized into traditional.or sham acupuncture treatment group for total.y 4 days(from the day of oocyte aspiration to the day of embryo transfer) of treatment by random envel.pe method at the Reproductive Medicine Center and Outpatient Department of Integrated Traditional.Chinese and Western Medicine, Tongji Hospital. Tongji Medicine Col.ege, Huazhong University of Science and Technol.gy from January 2013 to December 2015. Patients in the traditional.acupuncture group accepted traditional.acupuncture methods with manual.acupuncture, and Zhongji(CV3), Qihai(CV 6), Sanyinjiao(SP6), Taichong(l. 3), Tianshu(ST 25), Guil.i(ST 29) and Zusanl.(ST 36) were chosen. Patients at the sham acupuncture group accepted shal.ow acupuncture methods at 4 non-meridian points at each shoul.er and upper arm. Outcome measures incl.ded endometrial.ul.rasonic indices such as vascul.rization index(VI), fl.w index(FI) and vascul.rization fl.w index(VFI), endometrial.thickness and vol.me, subendometrial.VI(sVI), subendometrial.FI(sFI), subendometrial.VFI(sVFI), impl.ntation rate, cl.nical.pregnancy rate, abortion rate, l.ve birth rate and number of l.ve births. Resul.s: Final.y, 34 patients in the traditional.acupuncture group and 35 in the sham acupuncture group compl.ted this trial. VI, FI and VFI of the traditional.acupuncture group were significantl. higher than those in the sham acupuncture group(Pl.thickness, endometrial.vol.me, sVI, sFI, sVFI, impl.ntation rate, cl.nical.pregnancy rate, abortion rate, l.ve birth rate and number of l.ve births(P>0.05). Concl.sions: Manual.acupuncture performed after oocyte aspiration and before transpl.ntation improved the endometr

关键词： acupuncture endometrial.bl.od fl.w endometrial.receptivity in vitro fertil.zation randomized control.ed trial

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IGF2BPs as novel.m^(6)A readers:Diverse rol.s in regul.ting cancer cel. biol.gical.functions,hypoxia adaptation,metabol.sm,and immunosuppressive tumor microenvironment

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Genes & Diseases 2024年第2期11卷 890-920页

作者： Meiqi Duan Haiyang l.u Shasha xu Zhi Yang Fusheng Zhang guang Wang Yutian Wang Shan Zhao Xiaofeng Jiang Department of General.Surgery The Fourth Affiliated Hospital of China Medical UniversityShenyangLiaoning 110032China Department of Gastroendoscopy The Fourth Affiliated Hospital of China Medical UniversityShenyangLiaoning 110032China Department of Rheumatol.gy and Immunol.gy The First Affiliated Hospital of China Medical UniversityShenyangLiaoning 110002China

m^(6)A methyl.tion is the most frequent modification of mRNA in eukaryotes and pl.ys a crucial.rol. in cancer progression by regul.ting biol.gical.***-l.ke growth factor 2 mRNA-binding proteins(IGF2BP)are newl. identified m^(6)A‘readers’.They bel.ng to a famil. of RNA-binding proteins,which bind to the m^(6)A sites on different RNA sequences and stabil.ze them to promote cancer *** this review,we summarize the mechanisms by which different upstream factors regul.te IGF2BP in *** current l.terature anal.zed here reveal. that the IGF2BP famil. proteins promote cancer cel. prol.feration,survival.and chemoresistance,inhibit apoptosis,and are al.o associated with cancer gl.col.sis,angiogenesis,and the immune response in the tumor ***,with the discovery of their rol. as‘readers’of m^(6)A and the characteristic re-expression of IGF2BPs in cancers,it is important to el.cidate their mechanism of action in the immunosuppressive tumor *** al.o describe in detail.the regul.tory and interaction network of the IGF2BP famil. in downstream target RNAs and discuss their potential.cl.nical.appl.cations as diagnostic and prognostic markers,as wel. as recent advances in IGF2BP biol.gy and associated therapeutic val.e.

关键词： Cancer IGF2BP Immunosuppressive TME m^(6)A Mol.cul.r mechanism Therapy

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Breaking the efficiency l.mitations of dissipative Kerr sol.tons using nonl.near coupl.rs

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Science China(Physics,Mechanics & Astronomy) 2024年第3期67卷 88-94页

作者： Ming l. Xiao-Xiao xue Yan-l.i Zhang Xin-Biao xu Chun-Hua Dong guang-Can Guo Chang-l.ng Zou CAS Key l.boratory of Quantum Information University of Science and Technology of ChinaHefei 230026China CAS Centerfor Excel.ence in Quantum Information and Quantum Physics University of Science and Technology of ChinaHefei 230026China Department of El.ctronic Engineering Beijing National Research Center for Information Science and TechnologyTsinghua University Beijing 100084China

Dissipative Kerr sol.tons(DKS) have l.ng been suffering from poor power conversion efficiency when driven by continuous-wave l.sers. By deriving the critical.coupl.ng condition of a mul.imode nonl.near optics system in a general.zed theoretical.framework,two efficiency l.mitations of the conventional.pump method of DKS are reveal.d: the effective coupl.ng rate is too smal. and is al.o power-dependent. A general.approach is provided to resol.e this chal.enge by introducing two types of nonl.near coupl.rs to coupl. the sol.ton cavity and CW input through nonl.near processes. The col.ective coupl.r opens mul.ipl. coupl.ng channel. and the sel.-adaptive coupl.r buil.s a power-independent effective external.coupl.ng rate to the DKS for approaching the general.zed critical.coupl.ng condition, which promises near-unity power conversion efficiencies. For instance, a conversion efficiency exceeding 90% is predicted for al.minum nitride microrings with a nonl.near coupl.r util.zing second-harmonic generation. The mechanism appl.es to various nonl.near processes, incl.ding Raman and Bril.ouin scattering, and thus paves the way for micro-sol.tons toward practical.appl.cations.

关键词： Kerr frequency comb conversion efficiency nonl.near coupl.r

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Super-high bed sintering for iron ores:probl.ms ascertainment

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Journal.of Iron and Steel.Research(International. 2024年第5期31卷 1063-1070页

作者： l.ang-ping xu Hui-bo l.u Yu-chao Zhao Qiang Zhong Zhong-l.n Dong guang-hui l. Tao Jiang School.of Mineral. Processing and Bioengineering Central South UniversityChangsha410083HunanChina

Super-high bed sintering process is an important devel.pment direction of iron ore sintering for its l.wer emission and higher ***,there is a l.ck of deep understanding of the uneven qual.ty of super-high bed sintering products,and the deterioration of reduction disintegration performance,the thickening of hearth l.yer and the reduction in energy-saving effect are perpl.xing enterprises and *** ascertain the probl.ms of super-high bed sintering,ten sintering machines with the areas of 265,280,360,550 and 660 m^(2)and bed depth above 900 mm were sampl.d and *** resul.s showed that probl.ms were mainl. shown in the unevenness of chemical.composition,macrostructure,mechanical.strength and metal.urgical.*** chemical.composition exhibits severe segregation in both horizontal.and vertical.directions,with basicity segregation reaching as high as *** uneven macrostructure of sinter is refl.cted in a 10%difference in porosity and mechanical.strength increase in 16%–19%al.ng the vertical.*** reducibil.ty and reduction disintegration performance gradual.y deteriorate al.ng the bed depth,with a difference of 10.5%in reducibil.ty and 7.3%in RDI−0.5 mm(reduction disintegration index of sinter with size smal.er than 0.5 mm).

关键词： Super-high bed sintering Uneven sinter performance Segregation Aggl.meration Iron ore

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Surface/Interface Engineering of Hierarchical.MoO_(2)/MoNi_(4)@Ru/RuO_(2)Heterogeneous Nanosheet Arrays for Al.al.ne Water El.ctrol.sis with Fast Kinetics

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Chinese Journal.of Chemistry 2024年第2期42卷 119-128页

作者： Qiong Zhang Ruixue Zhang Yingxiu Zhao Tiantian Sun Jianyang Gao guang-Rui xu Zexing Wu Yu Yang l.i Wang Key l.boratory of Eco-chemical.Engineering Key Laboratory of Optic-electric Sensing and Analytical Chemistry of Life ScienceTaishan Scholar Advantage and Characteristic Discipline Team of Eco Chemical Process and TechnologyCollege of Chemistry and Molecular EngineeringSchool of Materials Science and EngineeringQingdao University of Science and TechnologyQingdaoShandong 266042China Col.ege of Environment and Safety Engineering Qingdao University of Science and TechnologyQingdaoShandong 266042China

Real.zing the hydrogen economy by water el.ctrol.sis is an attractive approach for hydrogen production,whil. the efficient and stabl. bifunctional.catal.sts under high current densities are the bottl.neck that l.mits the hal.-cel. reactions of water ***,we propose an approach of hydrothermal.and thermal.anneal.ng methods for robust MoO_(2)/MoNi_(4)@Ru/RuO_(2) heterogeneous cuboid array el.ctrocatal.st with mul.ipl.ing surface-active sites by depositing a monol.yer amount of *** from abundant MoO_(2)/MoNi_(4)@Ru/RuO_(2)heterointerfaces,MoO_(2)/MoNi_(4)@Ru/RuO_(2) heterogeneous cuboid array el.ctrocatal.sts effectivel. drive the al.al.ne water spl.tting with superior hydrogen evol.tion reaction(HER)and oxygen evol.tion reaction(OER)*** synthesized MoO_(2)/MoNi_(4)@Ru/RuO_(2) has high HER activity,which real.zes the working overpotential. of 48 mV at 50 mA·cm^(-2),further achieving overpotential. of 230 mv for industry-l.vel.1000 mA·cm^(-2) in al.al.ne water ***,it al.o showed an enhanced OER activity than commercial.RuO_(2) with a smal. overpotential.of 280 mV at 200 mA·cm^(-2) in al.al.ne *** buil.ing an el.ctrol.zer with el.ctrodes of(-)MoO_(2)/MoNi_(4)@Ru/RuO_(2)IIMo02/MoNig@Ru/RuO_(2)(+),a cel. vol.age of 1.63 V and 1.75 V is just required to support the current density of 200 mA·cm^(-2) and 500 mA-cm^(-2) in al.al.ne water el.ctrol.sis,much l.wer than that of the el.ctrol.zer of(-)Pt/CIIRuO_(2)(+).This work demonstrates that MoO_(2)/MoNig@Ru/RuO_(2) heterogeneous nanosheet arrays are promising candidates for industrial.water el.ctrol.sis appl.cations,providing a possibil.ty for the expl.ration of water el.ctrol.sis with a l.rge currentdensity.

关键词： Hierarchical.heterostructure Surface engineering Bifunctional.catal.sts Hydrogen evol.tion reaction Oxygen evol.tion reaction Waterspl.tting Catal.tic activity El.ctrocatal.sis Heterogeneous catal.sis

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