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Approximate Expressions to Evaluate the Performance in Butene-1 Purification Units

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Chinese Journal of Chemical Engineering 1998年第3期6卷 87-92页

作者： Sergio P.Bressa Nestor O.Ardiaca Osvaldo M.Martinez Guillermo F.Barreto depto.de Ing.Qca. Fac.de Ing.U.N.L.P.l esq.47(1900)La PlataDepto.de Ing.Qca.Fac.de Ing.U.N.L.P.l esq.47(1900)La PlataDepto.de Ing.Qca.Fac.de Ing.U.N.L.P.l esq.47(1900)La PlataDepto.de Ing.Qca.Fac.de Ing.U.N.L.P.l esq.47(1900)La Plata

1 INTRODUCTIONSelective hydrogenatioll of small amounts of butynes and butadiene is industrially employedfor obtaining high purity butene-l used as co-monomer in the production of linear *** this purpose,the content o... 详细信息

关键词： selective hydrogenation butene-1 1 3-butadiene trickle bed reactor

The Cauchy Problem for Coupled Nonlinear Schrdinger Equations with Linear Damping： Local and Global Existence and Blowup of Solutions

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Chinese Annals of Mathematics,Series B 2016年第5期37卷 665-682页

作者： Joao-Paulo DIAS Mario FIGUEIRA Vladimir V. KONOTOP LCMAF-CIO Faculdade de Ciencias Universidade de Lisboa Av. Prof. Gama Pinto 2 1649-003 Lisboa Portugal. Centro de fisica teorica e Computacional and Departamento de fisica Faculdade de Ciencias Universidade de Lisboa Campo Grande Ed.C8 1749-016 Lisboa Portugal.

The authors study, by applying and extending the methods developed by Cazenave(2003), Dias and Figueira(2014), Dias et al.(2014), Glassey(1994–1997), Kato(1987), Ohta and Todorova(2009) and Tsutsumi(1984), the Cauchy problem for a damped coupled system of nonlinear Schrdinger equations and they obtain new results on the local and global existence of H^1-strong solutions and on their possible blowup in the supercritical case and in a special situation, in the critical or supercritical cases.

关键词：爆破方案柯西问题耦合系统非线性整体存在性线性阻尼方程超临界

SYNCHRONOUS COMMUNICATION IN PLM ENVIRONMENTS USING ANNOTATED CAD MODELS

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Journal of Systems Science and Systems Engineering 2016年第2期25卷 142-158页

作者： Jorge D. Camba Manuel Contero Gustavo Salvador-Herranz Raquel Plumed College of Architecture University of Houston Houston TX USA I3BH Universitat Politkenica de Valkncia Valencia Spain depto. de Expresion Grafica Proyectos y Urbanismo Universidad CEU Cardenal Herrera Valencia Spain depto. de Ingenierla Mecanica y Construccian Universitat Jaume I Castellon Spain

The connection of resources, data, and knowledge through communication technology plays a vital role in current collaborative design methodologies and Product Lifecycle Management （PLM） systems, as these elements act as channels for information and meaning. Despite significant advances in the area of PLM, most communication tools are used as separate services that are disconnected from existing development environments. Consequently, during a communication session, the specific elements being discussed are usually not linked to the context of the discussion, which may result in important information getting lost or becoming difficult to access. In this paper, we present a method to add synchronous communication functionality to a PLM system based on annotated information embedded in the CAD model. This approach provides users a communication channel that is built directly into the CAD interface and is valuable when individuals need to be contacted regarding the annotated aspects of a CAD model. We present the architecture of a new system and its integration with existing PLM systems, and describe the implementation details of an annotation-based video conferencing module for a commercial CAD application.

关键词： Collaborative design PLM design communication CAD integration videoconferencing

Why static bound-state calculations of tetraquarks should be met with scepticism

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Chinese Physics C 2017年第5期41卷 49-53页

作者： George Rupp Eef van Beveren Centro de fisica e Engenharia de Materiais Avancados Instituto Superior Tecnico Universidade de Lisboa P-1049-001 Lisboa Portugal Centro de fisica da UC Departamento de Fisica Universidade de Coimbra P-3004-516 Coimbra Portugal

Recent experimental signals have led to a revival of tetraquarks,the hypothetical q~2q~2 hadronic states proposed by Jaffe in 1976 to explain the light scalar *** structures with exotic quantum numbers have indeed been observed recently,though a controversy persists as to whether these are true resonances and not merely kinematical threshold enhancements,or otherwise states not of a true q~2q~2 ***,puzzling non-exotic mesons are also often claimed to have a tetraquark ***,the corresponding model calculations are practically always carried out in pure and static bound-state approaches,ignoring completely the coupling to asymptotic two-meson states and unitarity,especially the dynamical effects *** this short paper we argue that these static predictions of real tetraquark masses are highly unreliable and provide little evidence of the very existence of such states.

关键词： meson scalar quark dynamical asymptotic otherwise argue merely decay exotic

Neural Network Based on Quantum Chemistry for Predicting Melting Point of Organic Compounds

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Chinese Journal of Chemical Physics 2009年第1期22卷 19-26页

作者： Juan A. Lazzus Departamento de fisica Universidad de La Serena Casilla 554 La Serena Chile

有机化合物的融化的点用包括背繁殖的一个联合方法被估计神经网络和量的结构性质关系(QSPR ) 在量化学的参数。反映分子间的力量和分子的对称的十一个描述符被用作输入变量。QSPR 参数用分子的建模和 PM3 被计算半实验的分子的轨道的理... 详细信息

有机化合物的融化的点用包括背繁殖的一个联合方法被估计神经网络和量的结构性质关系(QSPR ) 在量化学的参数。反映分子间的力量和分子的对称的十一个描述符被用作输入变量。QSPR 参数用分子的建模和 PM3 被计算半实验的分子的轨道的理论。260 混合物的一个总数被用来训练网络，它用 MatLab 被开发。然后， 73 另外的混合物的融化的点被预言，结果与从文学的试验性的数据相比。学习证明选择人工的神经网络和量的结构性质关系方法为有机化合物的融化的点的评价介绍一种优秀选择，与 5% 的平均绝对偏差。

关键词：神经网络分子轨道理论人工神经网络有机化合物

A new method of discriminating different types of post-Archean ophiolitic basalts and their tectonic significance using Th-Nb and Ce-Dy-Yb systematics

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Geoscience Frontiers 2015年第4期6卷 481-501页

作者： Emilio Saccani Dipartimento di fisica e Scienze della Terra Università di Ferrara

In this paper, a new discrimination diagram using absolute measures of Th and Nb is applied to postArchean ophiolites to best discriminate a large number of different ophiolitic basalts. This diagram was obtained using 〉2000 known ophiolitic basalts and was tested using -560 modern rocks from known tectonic settings. Ten different basaltic varieties from worldwide ophiolitic complexes have been examined. They include two basaltic types that have never been considered before, which are：（1） medium-Ti basalts （MTB） generated at nascent forearc settings; （2） a type of mid-ocean ridge basalts showing garnet signature （G-MORB） that characterizes Alpine-type （i,e., non volcanic） rifted margins and ocean-continent transition zones （OCTZ）. In the Th-Nb diagram, basalts generated in oceanic subductionunrelated settings, rifted margins, and OCTZ can be distinguished from subduction-related basalts with a misclassification rate 〈 1%. This diagram highlights the chemical variation of oceanic, rifted margin, and OCTZ basalts from depleted compositions to progressively more enriched compositions reflecting, in turn, the variance of source composition and degree of melting within the MORB-OIB array. It also highlights the chemical contributions of enriched （OIB-type） components to mantle sources. Enrichment of Th relative to Nb is particularly effective for highlighting crustal input via subduction or crustal contamination. Basalts formed at continental margin arcs and island arc with a complex polygenetic crust can be distinguished from those generated in intra-oceanic arcs in supra-subducrion zones （SSZ） with a misclassification rate 〈1%. Within the SSZ group, two sub-settings can be recognized with a misclassification rate 〈0.5%. They are：（1） SSZ influenced by chemical contribution from subduction- derived components （forearc and intra-arc sub-settings） characterized by island arc tholeiitic （IAT） and boninitic basalts; （2） SSZ with no contribution from subduction-derived comp

关键词： Basalts Ophiolite Discrimination diagram Trace elements Plate tectonics

Reaction mechanisms in massive nuclei collisions and perspectives for synthesis of heavier superheavy elements

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Nuclear Science and Techniques 2013年第5期24卷 98-106页

作者： GIARDINA G NASIROV A K MANDAGLIO G CURCIARELLO F De LEO V FAZIO G ROMANIUK M Dipartimento di fisica e di Scienze della Terra dell'Università di Messina Istituto Nazionale di fisica Nucleare Sezione di Catania Joint Institute for Nuclear Research Institute of Nuclear Physics Centro Siciliano di fisica Nucleare e Struttura della Materia Catania 95125Italy

We discuss a hardship in synthesis of heaviest super heavy elements in massive nuclei reactions due to the hindrance to complete fusion of reacting nuclei caused on the onset of quasifission process which strongly competes with complete fusion and due to the strong increase of fission yields along the de-excitation cascade of the compound nucleus in comparison with the evaporation residue *** hindrance to formation of compound nucleus and evaporation residue is determined by the characteristic of the entrance channel.

关键词：超重元素反应机制合成碰撞聚变反应残余物复合核核反应

One-neutron stripping process in the^(209)Bi(^(6)Li,^(5)Li)^(210)Bi*reaction reaction

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Nuclear Science and Techniques 2024年第6期35卷 120-129页

作者： Gao-Long Zhang Zhen-Wei Jiao Guang-Xin Zhang E.N.Cardozo B.Paes Shi-Peng Hu Jian-Qiang Qian Daniele Mengoni Wei-Wei Qu Cong-Bo Li Yun Zheng Huan-Qiao Zhang Hui-Bin Sun Nan Wang Chun-Lei Zhang J.J.Valiente-Dobón D.Testov M.Mazzocco A.Gozzelino C.Parascandolo D.Pierroutsakou M.La Commara A.Goasduff D.Bazzacco D.R.Napoli F.Galtarossa F.Recchia A.Illana S.Bakes I.Zanon S.Aydin Gde Angelis M.Siciliano R.Menegazzo S.M.Lenzi S.Akkoyun L.F.Canto J.Lubian School of Physics Beihang UniversityBeijing 100191China Sino-French Institute of Nuclear Engineering and Technology Sun Yat-Sen UniversityZhuhai 519082China Instituto de Física Universidade Federal Fluminense24210-340 NiteróiRio de JaneiroBrazil Laboratorio TANDAR Comisión Nacional de Energía AtómicaBKNA1650 San MartíınArgentina Institute for Advanced Study in Nuclear Energy and Safety Shenzhen UniversityShenzhen 518060China Shenzhen Key Laboratory of Research and Manufacture of High Purity Germanium Materials and Fetectors Shenzhen UniversityShenzhen 518060China INFN Sezione di PadovaPaduaItaly Dipartimento di fisica Astronomia dell’Universita di padova PaduaItaly State Key Laboratory of Radiation Medicine and Protection School of Radiation Medicine and ProtectionSoochow UniversitySuzhou 215123China China Institute of Atomic Energy Beijing 102413China The Key Laboratory of Beam Technology and Material Modification of Ministry of Education College of Nuclear Science and TechnologyBeijing Normal UniversityBeijing 100875China Laboratori Nazionali di Legnaro INFN35020 LegnaroItaly INFN Sezione di Napoli80126 NaplesItaly Dipartimento di Farmacia Universitàdi Napoli“Federico II”80131 NaplesItaly Department of Natural and Mathematical Sciences Faculty of EngineeringTarsus University33480 MersinTurkey Physics Division Argonne National LaboratoryLemontILUSA Department of Physics Sivas Cumhuriyet UniversitySivasTurkey Instituto de Física Universidade Federal do Rio de JaneiroRio de Janeiro CP 6852821941-972Brazil

One-neutron stripping process between^(6)Li and^(209)Bi was studied at 28,30,and 34 MeV using the in-beamγ-ray spectroscopy ***γ-γcoincident analysis clearly identified twoγ-rays feeding the ground and long-lived isomeric states,which were employed to determine the cross *** one-neutron stripping cross sections were similar to the cross sections of complete fusion in the^(6)Li+^(209)Bi system,but the one-neutron stripping cross sections decreased more gradually at the sub-barrier region.A coupled-reaction-channel calculation was performed to study the detailed reaction mechanism of the one-neutron stripping process in^(6)*** calculations indicated that the first excited state of 5 Li is critical in the actual one-neutron transfer mechanism,and the valence proton of 209Bi can be excited to the low-lying excited state in(^(6)Li,^(5)Li)reaction,unlike in the(d,p)reaction.

关键词： Transfer reaction Weakly bound nuclei Cross section

Enhancement and Function of the Piezoelectric Effect in Polymer Nanofibers

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Accounts of Materials Research 2022年第9期3卷 900-912页

作者： Luana Persano Sujoy Kumar Ghosh Dario Pisignano NEST Istituto Nanoscienze-CNR and Scuola Normale SuperioreI-56127 PisaItaly Dipartimento di fisica Universitàdi PisaI-56127 PisaItaly

CONSPECTUS:The realization of intelligent,self-powered compo-nents and devices exploiting the piezoelectric effect at large scale might greatly contribute to improve our efficiency in using resources,albeit a profound redesign of the materials and architectures used in current electronic systems would be *** is a property of certain materials to generate an electrical bias in response to a mechanical *** effect enables energy to be harvested from strain and vibration modes,and to sustain the power of actuators,transducers,and sensors in integrated networks,such as those necessary for the Internet of Thing.

关键词： fibers piezoelectric realization