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海水中Mg同位素组成的研究

海水中Mg同位素组成的研究

A novel Ga(Ⅲ)coordination complex as an efficient sensitizer for enhancing photocatalytic activity of TiO_(2)/rGO nanocomposite

高分辨记录与同位素技术在环境变化研究中的应用全国学术讨论会

作者：袁洪林 u.H.WIEchERT A.n.HALLIDAY 陕西省西安市西北大学地质学系 Institute for Isotope Geology and Mineral Resources Department of Earth SciencesETH ZentrumSonneggstrasse 5CH-8092ZurichSwitzcrland.

Mg是海水中含量仅次于na的阳离子。其三个同位素(24Mg,25Mg,and 26Mg)中质量差别比较大的特点使得根据质量相关的同位素分馏成为一种潜在的研究生物地球化学中的微量物理化学的过程。本研究中我们测量了太平洋、北冰洋、加拿大海湾及一...

Mg是海水中含量仅次于na的阳离子。其三个同位素(24Mg,25Mg,and 26Mg)中质量差别比较大的特点使得根据质量相关的同位素分馏成为一种潜在的研究生物地球化学中的微量物理化学的过程。本研究中我们测量了太平洋、北冰洋、加拿大海湾及一些湖水中的Mg同位素的组成情况。每种海水分别采自6种从表面到底部不同的深度。本研究主要的目

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Journal of Rare Earths 2023年第7期41卷 1004-1013,I0002页

作者： Amir Hossein cheshme Khavar neda Khedri Rubén Rizo Juan Miguel Feliu Martínez Ali Reza Mahjoub Masoumeh Doolabi Ehsan Aghayani Department of chemistry Farhangian UniversityTehranIran Department of chemistry Faculty of Basic SciencesTarbiat Modares UniversityTehranIran Instituto de Electroquímica y Departamento de Química Física Universidad de Alicante03080AlicanteSpain Research Center for Environmental Contaminants Abadan University of Medical SciencesAbadanIran Department of Environmental Health Engineering Abadan University of Medical SciencesAbadanIran

narrow solar-light response range and rapid charges recombination are the main technical barriers in TiO_(2) photocatalysis *** overcome these restrictions,in this work we synthesized a novel binuclear gadolinium(Ⅲ) coordination complex,[Gd_(2)(DPDB)_6(DMF)_6(H_(2)O_()2)](DPDB=[(4-dimethylamino)phenyldiazenyl] benzenesulfonate),which was used as an inorganic sensitizer for boosting the visible light-harvesting and quantum efficiency of TiO_(2) supported-reduced graphene oxide(rGO) *** structure of [Gd_(2)(DPDB)_6(DMF)_6(H_(2)O)_(2)](Gd-CMP) was determined from single-crystal X-ray diffraction data,which indicates three-dimensional(3D) supramolecular architecture through hydrogen bonding and ch…π_(ph) *** prepared nanohybrid(Gd-CMP/TG) reveals significantly enhanced visible-light-induced photocatalytic activity for degradation of acetaminophen(ACT).The complete removal of 10 mg/L ACT is achieved over Gd-CMP/TG,and the corresponding rate constant of ACT degradation of nanohybrid is 40-fold higher than that of bare TiO_(2).In prepared ternary nanohybrid,metal-coordination sensitizer(Gd-CMP) acts as an electron donor,and at the same time,rGO serves as an electron acceptor,and the synergistic effect between them efficiently enhances charges separation and inhibits e/h pair recombination in the hybridized *** radical scavenger tests indicate that the photo-induced O_(2)^(-·) radicals dominate ACT *** the basis of the experimental results and calculated energy of electronic levels,a possible mechanism for the improved photocatalytic activity is discussed.

关键词： Gadolinium Coordination complex Sensitizer Photocatalytic Light-harvesting Rare earths

u-Doped Y-Ba-Cu-O Melt-Processed Superconductor

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Tsinghua Science and Technology 2003年第3期8卷 242-250页

作者： n.Hari Babu D.A.Cardwell C.D.Tarrant K.R.Schneider IRC in Superconductivity University of CambridgeMadingley RoadCambridgeCB3 OHEUKIRC in SuperconductivityUniversity of CambridgeMadingley RoadCambridgeCB3 OHEUKUrenco Power Technologies Ltd.CapenhurstCheshireCH1 6ERUKUrenco Power Technologies Ltd.CapenhurstCheshireCH1 6ERUK

Large grain Y-Ba-Cu-O (YBCO) superconductors doped with various amounts of depleted uranium oxide have been fabricated by top seeded melt growth (TSMG). The effect of depleted uO2 on the large grain microstructure has been studied systematically in samples with and without added Pt. Addition of uranium oxide results in the formation of u-phase particles of dimensions of a few hundred nanometers with an approximately spherical morphology in the superconducting YBa2Cu3O7-δ(Y-123) phase matrix. Addition of Y2O3 to the uranium doped precursor powder, rather than Y-211, yields a significantly finer distribution of second phase particles. The chemical composition of the u-phase particles, found in samples with no Pt addition, has been identified as Y2Ba4CuuOy, which exhibits paramagnetic behaviour. It has been confirmed experimentally that this phase forms during the peritectic solidification process. Magnetic measurements show that u-doped melt processed YBCO exhibits improved critical current densities and trapped fields compared to un-doped material.

关键词： superconductor critical current density uranium oxide

2,2,6,6-四甲基哌啶-1-氧自由基促进的钒基催化剂催化苯直接氧化制苯酚

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催化学报 2011年第9期32卷 1446-1451页

作者：陈佳琦高爽李军吕迎中国科学院大连化学物理研究所辽宁大连116023 中国科学院研究生院北京100049

以钒基化合物为催化剂,在TEMPO(2,2,6,6-四甲基哌啶-1-氧自由基)存在下,能形成快速催化分子氧氧化苯制苯酚的催化体系.在反应过程中,由类似芬顿试剂反应过程生成的羟基自由基亲核进攻苯环,形成羟基环己二烯自由基;该羟基氢可在TEMPO存... 详细信息

以钒基化合物为催化剂,在TEMPO(2,2,6,6-四甲基哌啶-1-氧自由基)存在下,能形成快速催化分子氧氧化苯制苯酚的催化体系.在反应过程中,由类似芬顿试剂反应过程生成的羟基自由基亲核进攻苯环,形成羟基环己二烯自由基;该羟基氢可在TEMPO存在的催化体系中消除,同时苯环氢可立即转移至氧原子而生成苯酚.在以[(ch3)4n]4-PMo11VO40为催化剂的体系中,反应1h苯酚收率可从不加TEMPO时的1.2%提高到8.4%;而以V-AlPO5为催化剂时,苯酚收率可从不加TEMPO时的5.0%提高到9.5%,且选择性均较高.

关键词： 2,2,6,6-四甲基哌啶-1-氧自由基钒苯羟基化分子氧苯酚

经表皮试验及淋巴细胞转化试验证实由A组皮质类固醇激素诱发的口服泼尼松龙后出现急性泛发性发疹性脓疱病

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世界核心医学期刊文摘（皮肤病学分册） 2006年第9期2卷 49-50页

作者： Buettiker u. Keller M. PichlerW.J. n. Yawalkar 吴佳纹 Department of Dermatology Inselspital CH- 3010 Berne Switzerland Dr.

Background: Acute generalized exanthematous pustulosis (AGEP) is a rare cutaneous eruption which is often provoked by drugs. Case Report: We report 2 cases of AGEP which showed rapidly spreading pustular eruptions accompanied by malaise, fever and neutrophilia after the administration of systemic prednisolone (corticosteroid of group A, hydrocortisone type). The histological examination showing neutrophilic subcorneal spongiform pustules was consistent with the diagnosis of AGEP. In both cases the rash cleared within a week upon treatment with topical steroids (corticosteroid of group D1, beta-methasonediprop-ionate type and corticosteroid of group D2, hydrocortisone-17-butyrate type). Three months after recovery, the sensitization to corticosteroids of group A was confirmed by epicutaneous testing and positive lymphocyte transformation tests. Conclusion: These cases show that systemic corticosteroids can induce AGEP and demonstrate that epicutaneous testing and lymphocyte transformation tests may be helpful in identifying the causative drug. Our data support previous reports indicating an important role for drug-specific T cells in inducing neutrophil inflammation in this disease.

关键词：急性泛发性发疹性脓疱病淋巴细胞转化试验皮质类固醇激素泼尼松龙激素诱发皮试验丁酸氢化可的松嗜中性粒细胞

Two-Dimensional Transition Metal Carbides and nitrides(MXenes): Synthesis, Properties, and Electrochemical Energy Storage Applications

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Energy & Environmental Materials 2020年第1期3卷 29-55页

作者： chuanfang (John) Zhang Yonglu Ma Xuetao Zhang Sina Abdolhosseinzadeh Hongwei sh.ng Wei Lan Amir Pakdel Jakob Heier Frank nüesch Laboratory for Functional Polymers EmpaSwiss Federal Laboratories for Materials Science and TechnologyUberlandstrasse 129CH-8600Dubendorf Switzerland Key Laboratory of Special Function Materials and Structure Design Ministry of EducationSchool of Physical Science and TechnologyLanzhou UniversityLanzhou 730000China Institute of Materials Science and Engineering Ecole Polytechnique Federale de Lausanne(EPFL)Station 12CH-1015Lausanne Switzerland Assoc.Prof.A.Pakdel School of chemistry University College Dublin (UCD) Belfield Dublin 4 Ireland

A family of 2D transition metal carbides and nitrides known as MXenes has received increasing attention since the discovery of Ti3C2 in 2011. To date, about 30 different MXenes with well-defined structures and properties have been synthesized, and many more are theoretically predicted to exist. Due to the numerous assets including excellent mechanical properties, metallic conductivity,unique in-plane anisotropic structure, tunable band gap, and so on, MXenes rapidly positioned themselves at the forefront of the 2D materials world and have found numerous promising applications. Particular interest is devoted to applications in electrochemical energy storage, whereby 2D MXenes work either as electrodes,additives, separators, or hosts. This review summarizes recent advances in the synthesis, fundamental properties and composites of MXene and highlights the state-of-the-art electrochemical performance of MXene-based electrodes/*** progresses in the field of supercapacitors and Li-ion batteries, Li-S batteries, naand other alkali metal ion batteries are reviewed, and current challenges and new opportunities for MXenes in this surging energy storage field are presented. In the focus of interest is the possibility to boost device-level performance, particularly that of rechargeable batteries, which are of utmost importance in future energy technologies. Very recently, the 2019 nobel Prize in chemistry was awarded to the inventors of the Li-ion battery. For sure, this will provide an additional stimulation to study fundamental aspects of electrochemical energy storage.

关键词： battery energy storage MXene supercapacitor transition metal carbide

Water‑Dispersible CsPbBr_(3) Perovskite nanocrystals with ultra‑Stability and its Application in Electrochemical CO_(2) Reduction

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nano-Micro Letters 2021年第11期13卷 190-202页

作者： Keqiang chen Kun Qi Tong Zhou Tingqiang Yang Yupeng Zhang Zhinan Guo ch.ng‑Keun Lim Jiayong Zhang Igor Zutic Han Zhang Paras n.Prasad Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province Institute of Microscale OptoelectronicsShenzhen UniversityShenzhen 518060People’s Republic of China Institute for Lasers Photonicsand BiophotonicsDepartment of ChemistryUniversity at BuffaloState University of New YorkBuffaloNY 14260USA Department of Physics University at BuffaloState University of New YorkBuffaloNY 14260USA Department of chemical and Materials Engineering School of EngineeringNazarbayev UniversityNur‑Sultan City 010000Kazakhstan Jiangsu Key Laboratory of Micro and nano Heat Fluid Flow Technology and Energy Application School of Physical Science and TechnologySuzhou University of Science and TechnologySuzhouJiangsu 215009People’s Republic of China

Thanks to the excellent optoelectronic properties,lead halide perovskites(LHPs)have been widely employed in highperformance optoelectronic devices such as solar cells and lightemitting ***,overcoming their poor stability against water has been one of the biggest challenges for most ***,we report a novel hot-injection method in a Pb-poor environment combined with a well-designed purification process to synthesize water-dispersible CsPbBr_(3) nanocrystals(nCs).The as-prepared nCs sustain their superior photoluminescence(91%quantum yield in water)for more than 200 days in an aqueous environment,which is attributed to a passivation effect induced by excess CsBr *** to the ultra-stability of these LHP nCs,for the first time,we report a new application of LHP nCs,in which they are applied to electrocatalysis of CO_(2) reduction ***,they show significant electrocatalytic activity(faradaic yield:32%for ch4,40%for CO)and operation stability(>350 h).

关键词： CsPbBr_(3)nanocrystals Water-dispersible ultra-stability Electrochemical CO_(2)reduction

A private SuSY 4HDM with FCnC in the up-sector

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chinese Physics C 2021年第2期45卷 326-340页

作者： M.A.Arroyo-ureña Lorenzo Díaz-Cruz Bryan O.Larios-López M.A.Pérez de León Facultad de Estudios Superiores Cuautitlan-unAM Cuautitlan Edo de MexMéxico Mesoamerican Center for Theoretical Physics UNACHChiapasMéxico CIFFu and Facultad de Ciencias Físico-Matemáticas Benemérita Universidad Autónoma de Puebla ApdoPostal 1364CP72000PueblaPueMéxico Departamento de Gravitación y Altas Energías Facultad de Ciencias Universidad Nacional Autónoma de Honduras Ciudad UniversitariaTegucigalpa MDCHonduras

We present a SuSY model with four Higgs doublets of the"private type,"in which all fermion types(up,down,and charged leptons)obtain their masses from a different Higgs doublet H_f(f=u_1,d,e) .The conditions for anomaly cancellation imply that the remaining Higgs doublet of the model( H_(u_2) )must have the same hypercharge as H_(u_1) ,and thus,can only couple to up-type quarks,which opens the possibility to have FCnCs only in this *** study the Lagrangian of the model,and in particular,the Higgs potential,to identify the Higgs mass-eigenstates and their interactions;for the Yukawa matrices,we consider the four-texture *** obtain constraints on the model parameters by using LHC measurements on the properties of the 125 GeV Higgs boson(h),and identify viable regions of the parameter ***,these constraints are used to evaluate the prospects for detecting the FCnC decay mode t→ch at the future high-luminosity(HL)option for the LHC,which are compared with current limits from ***,we evaluate the FCnC decay of the next heavier Higgs boson H_(2)→tc ,which can typically reach BR(H_2→tc)≈(10^(-4)-10^(-5)) .The search for the signal at HL-LHC is also studied,and it is found that it may be detectable for specific regions of the model parameter space.

关键词： Higgs physics top quark supersymmetry collider physics

Determination of the number ofψ(3686)events taken at BESⅢ

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chinese Physics C 2024年第9期48卷 8-20页

作者： M.Ablikim M.n.Achasov P.Adlarson O.Afedulidis X.C.Ai R.Aliberti A.Amoroso Q.An Y.Bai O.Bakina I.Balossino Y.Ban H.-R.Bao V.Batozskaya K.Begzsuren n.Berger M.Berlowski M.Bertani D.Bettoni F.Bianchi E.Bianco A.Bortone I.Boyko R.A.Briere A.Brueggemann H.Cai X.Cai A.Calcaterra G.F.Cao n.Cao S.A.Cetin J.F.ch.ng G.R.che G.chelkov C.chen C.H.chen chao chen G.chen H.S.chen H.Y.chen M.L.chen S.J.chen S.L.chen S.M.chen T.chen X.R.chen X.T.chen Y.B.chen Y.Q.chen Z.J.chen Z.Y.chen S.K.choi G.Cibinetto F.Cossio J.J.Cui H.L.Dai J.P.Dai A.Dbeyssi R.E.de Boer D.Dedovich C.Q.Deng Z.Y.Deng A.Denig I.Denysenko M.Destefanis F.De Mori B.Ding X.X.Ding Y.Ding Y.Ding J.Dong L.Y.Dong M.Y.Dong X.Dong M.C.Du S.X.Du Y.Y.Duan Z.H.Duan P.Egorov Y.H.Fan J.Fang J.Fang S.S.Fang W.X.Fang Y.Fang Y.Q.Fang R.Farinelli L.Fava F.Feldbauer G.Felici C.Q.Feng J.H.Feng Y.T.Feng M.Fritsch C.D.Fu J.L.Fu Y.W.Fu H.Gao X.B.Gao Y.n.Gao Yang Gao S.Garbolino I.Garzia L.Ge P.T.Ge Z.W.Ge C.Geng E.M.Gersabeck A.Gilman K.Goetzen L.Gong W.X.Gong W.Gradl S.Gramigna M.Greco M.H.Gu Y.T.Gu C.Y.Guan Z.L.Guan A.Q.Guo L.B.Guo M.J.Guo R.P.Guo Y.P.Guo A.Guskov J.Gutierrez K.L.Han T.T.Han F.Hanisch X.Q.Hao F.A.Harris K.K.He K.L.He F.H.Heinsius C.H.Heinz Y.K.Heng C.Herold T.Holtmann P.C.Hong G.Y.Hou X.T.Hou Y.R.Hou Z.L.Hou B.Y.Hu H.M.Hu J.F.Hu S.L.Hu T.Hu Y.Hu G.S.Huang K.X.Huang L.Q.Huang X.T.Huang Y.P.Huang T.Hussain F.Hölzken n.Hüsken n.in der Wiesche J.Jackson S.Janchiv J.H.Jeong Q.Ji Q.P.Ji W.Ji X.B.Ji X.L.Ji Y.Y.Ji X.Q.Jia Z.K.Jia D.Jiang H.B.Jiang P.C.Jiang S.S.Jiang T.J.Jiang X.S.Jiang Y.Jiang J.B.Jiao J.K.Jiao Z.Jiao S.Jin Y.Jin M.Q.Jing X.M.Jing T.Johansson S.Kabana n.Kalantar-nayestanaki X.L.Kang X.S.Kang M.Kavatsyuk B.C.Ke V.Khachatryan A.Khoukaz R.Kiuchi O.B.Kolcu B.Kopf M.Kuessner X.Kui n.Kumar A.Kupsc W.Kühn J.J.Lane P.Larin L.Lavezzi T.T.Lei Z.H.Lei M.Lellmann T.Lenz C.Li C.Li C.H.Li ch.ng Li D.M.Li F.Li G.Li H.B.Li H.J.Li H.n.Li Hui Li J.R.Li J.S.Li Ke Li L.J.Li L.K.Li Lei Li M.H.Li P.R.Li Q.M.Li Q.X.Li R.Li S.X.Li T.Li W.D.Li W.G.Li X.Li X.H.Li X.L.Li X.Z.Li Xi Institute of High Energy Physics Beijing 100049China Beihang university Beijing 100191China Bochum Ruhr-university D-44780BochumGermany Budker Institute of nuclear Physics SB RAS(BInP) Novosibirsk 630090Russia Carnegie Mellon university PittsburghPennsylvania 15213USA Central china normal university Wuhan 430079China Central South university Changsha 410083China china Center of Advanced Science and Technology Beijing 100190China china university of Geosciences Wuhan 430074China ch.ng-Ang university Seoul06974Republic of Korea COMSATS university Islamabad Lahore CampusDefence RoadOff Raiwind Road54000LahorePakistan Fudan university Shanghai 200433China GSI Helmholtzcentre for Heavy Ion Research GmbH D-64291DarmstadtGermany Guangxi normal university Guilin 541004China Guangxi university Nanning 530004China Hangzhou normal university Hangzhou 310036China Hebei university Baoding 071002China Helmholtz Institute Mainz Staudinger Weg 18D-55099MainzGermany Henan normal university Xinxiang 453007China Henan university Kaifeng 475004China Henan university of Science and Technology Luoyang 471003China Henan university of Technology Zhengzhou 450001China Huangsh.n College Huangshan 245000China Hunan normal university Changsha 410081China Hunan university Changsha 410082China Indian Institute of Technology Madras Chennai 600036India Indiana university BloomingtonIndiana 47405USA InFn Laboratori nazionali di Frascati (A)INFN Laboratori Nazionali di FrascatiI-00044FrascatiItaly(B)INFN Sezione di PerugiaI-06100PerugiaItaly(C)University of PerugiaI-06100PerugiaItaly InFn Sezione di Ferrara (A)INFN Sezione di FerraraI-44122FerraraItaly(B)University of FerraraI-44122FerraraItaly Inner Mongolia university Hohhot 010021China Institute of Modern Physics Lanzhou 730000China Institute of Physics and Technology Peace Avenue 54BUlaanbaatar 13330Mongolia Instituto de Alta Investigación Universidad de TarapacáCasilla 7DArica 1000000Chile Jilin university Changchun 130012China Joha

The number ofψ(3686)events collected by the BESⅢdetector during the 2021 run period is determined to be(2259.3±11.1)×10~6 by counting inclusiveψ(3686)hadronic *** uncertainty is systematic and the statistical uncertainty is ***,the numbers ofψ(3686)events collected during the 2009 and 2012run periods are updated to be(107.7±0.6)×10~6 and(345.4±2.6)×10~6,*** numbers are consistent with the previous measurements within one standard *** total number ofψ(3686)events in the three data samples is(2712.4±14.3)×10~6.

关键词： ψ(3686) inclusive process Hadronic events BESⅢdetector