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Re-folded structure of syn-orogenic granitoids(Padrón dome, nW Iberia):Assessing rheological evolution of cooling continental crust in a collisional setting

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Geoscience Frontiers 2019年第2期10卷 651-669页

作者： Rubén Díez Fernández Francisco j.Rubio Pascual Luis Miguel Martín parra Departamento de Geodinámica Estratigrafía y PaleontologíaFacultad de Ciencias GeológicasUniversidad Complutense de Madrid Instituto Geológico y Minero de Espana

This contribution discusses about the rheological, kinematic and dynamic frameworks necessary to produce recumbent and upright folds from syn-orogenic granitic massifs that were formed during an early stage of magma genesis related to the onset of a migmatitic dome. Syn-kinematic granitoids occurring within the high-grade infrastructure of the Padron migmatitic dome(nW Iberia) are deformed into largescale recumbent folds(D_2) that are later affected by upright folds(D_3). Petrostructural analysis of a selected area of this dome reveals that after a period of crustal thickening(D_1), nnW-directed extensional flow gave way to recumbent folds and penetrative axial plane foliation(S_2). Superimposed subhorizontal compression resulted in upright folds(D_3). A closer view into the dynamics of the dome allows exploring the factors that may condition the nucleation of folds with contrasting geometries during progressive deformation of molten continental crust. The formation of folds affecting syn-kinematic granitoids suggests a cooling metamorphic path in migmatitic domes. Active and passive folding mechanisms require a crystallizing(cooling) magma to nucleate folds. A more competent metamorphic host inhibits fold nucleation from much less competent magmas. As it crystallizes, magma becomes more rigid(competent),and approaches viscosity values of its host. Passive folding is favored when no significant competence contrast exists between magma and host, so this folding mechanism is more likely shortly after magma genesis and emplacement. In such conditions, and under dominant subhorizontal flow accompanied by flattening(D_2),passive folding would produce isoclinal recumbent geometries. Further magma cooling introduces a shift into the rheological behavior of partially molten crust. Thereon, crystallizing magma bodies would represent significant competence contrasts relative to their host. At this point, buckling is a more likely folding mechanism, and more regular, buckle fo

关键词： Recumbent folds Migmatitic domes Partial melting Crustal-derived granitoids Orogenic collapse Variscan orogen

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Two-stage precipitation process of iron and arsenic from acid leaching solutions

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中国有色金属学会会刊：英文版 2008年第6期18卷 1513-1517页

作者： n. j. BOLIn j. E. SUnDKVIST Boliden Mineral AB SE-936 81 Boliden SWEDEN

为贱金属恢复的沥滤的进程经常产生象铁和砷那样的杂质的可观的数量进解决方案。为最后的处理把非珍贵的金属分开成可管理、稳定的废物产品是挑战，没有松开珍贵成分。Boliden 矿物质 AB 获给很干净的铁砷的一个二阶段的降水过程专利由... 详细信息

为贱金属恢复的沥滤的进程经常产生象铁和砷那样的杂质的可观的数量进解决方案。为最后的处理把非珍贵的金属分开成可管理、稳定的废物产品是挑战，没有松开珍贵成分。Boliden 矿物质 AB 获给很干净的铁砷的一个二阶段的降水过程专利由贱金属的最少一起沉淀猛抛。有好沉积和过滤性质的获得的产品表演，它使恢复铁砷容易弄空由过滤的答案并且 precipitate 洗。键盘乐器的低音部凳子规模测试被做了，显示出二阶段的降水过程完成的优秀结果。

关键词：提取生物浸取沉淀铁

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MODELInG THE KnOWLEDGE CREATIOn PROCESS OF GRADUATE RESEARCH

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j.urnal of Systems Science and Systems Engineering 2018年第6期27卷 790-809页

作者： j. Sun j. Tian V.n. Huynh Y. nakamori School of Knowledge Science Japan Advanced lnstitute of Science and Technology lshikawa Japan School of Computer Science and Technology Wuhan University of Technology Wuhan China

Graduate students who are beginning academic research want to learn how to create and verify new knowledge in their research. Their supervisors, on the other hand, are seeking appropriate research environments including effective research guidance methods. In order to meet these demands, this paper proposes a knowledge creation model that supports the obj.ctives of both graduate students and their supervisors. This is an academic knowledge creation model for individuals supported by a group and its origin can be traced back to a famous organizational knowledge creation model. Since this type of model is constructed from empirical knowledge, it is not easy to prove its obj.ctive significance. But, this paper tries to show the effectiveness of the proposed model as an initial stage of model validation based on a questionnaire survey of students in a graduate school in China.

关键词： Knowledge creation model graduate students research ability research environment

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Application of formal languages in polynomial transformations of instances between nP-complete problems

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j.urnal of Zhej.ang University-Science C(Computers and Electronics) 2013年第8期14卷 623-633页

作者： j.rge A. RUIZ-VAnOYE j.aquín PREZ-ORTEGA Rodolfo A. PAZOS RAnGEL Ocotlán DíAZ-parra Héctor j. FRAIRE-HUACUj. j.an FRAUSTO-SOLíS Gerardo REYES-SALGADO Laura CRUZ-REYES DACI Universidad Autónoma del Carmen Computer Science Centro Nacional de Investigación y Desarrollo Tecnológico Systems and Computer Science Instituto Tecnológico de Ciudad Madero Informatics Universidad Politécnica del Estado de Morelos Computer Science Instituto Tecnológico de Cuautla

We propose the usage of formal languages for expressing instances of nP-complete problems for their application in polynomial transformations. The proposed approach, which consists of using formal language theory for polynomial transformations, is more robust, more practical, and faster to apply to real problems than the theory of polynomial transformations. In this paper we propose a methodology for transforming instances between nP-complete problems, which differs from Garey and j.hnson's. Unlike most transformations which are used for proving that a problem is nP-complete based on the nP-completeness of another problem, the proposed approach is intended for extrapolating some known characteristics, phenomena, or behaviors from a problem A to another problem B. This extrapolation could be useful for predicting the performance of an algorithm for solving B based on its known performance for problem A, or for taking an algorithm that solves A and adapting it to solve B.

关键词： Formal languages Polynomial transformations nP-completeness

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Mountain Water Tower and Ecological Risk Estimation of the Mesta-nestos Transboundary River Basin (Bulgaria-Greece)

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j.urnal of Mountain Science 2007年第3期4卷 209-220页

作者： K. Grunewald j. Scheithauer j.-M. Monget n. nikolova Landscape Research Centre Dresden Ecole des Mines de Paris South-West University Blagoevgrad

The Mesta-nestos river basin in Bulgaria and Greece is a case study for transboundary decision-making support in south-eastern Europe and a show-case for the development of methodologies and information-gathering for the integrated regional planning of water resources. Land-use conflicts in this water-scarce region cover a wide spectrum of activities like agricultural irrigation, drinking water production, diversions for industrial water, and risk of pollution from mining, to name a few examples. Measurements of the water quality were carried out in the upper basin. Results will be illustrated by the example of the environmental situation in the alpine region of the Pirin national Park as well as in the Razlog Basin with a stronger anthropogenic impact and pollution around a former uranium mine near the village of Elesnica. The social and economic development of this transboundary region is a recently established priority for mean an increase in water usage the water resources if regional the future. It will and more stress for impacts of global climate change are verified. Problem-focused management of the catchment area as a whole on the basis of proved geo-data sets is needed for the future.

关键词： Environment interactions nutrients pollutants resource management Southeast Europe uranium water quality Pirin high Mountains

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Biotransformation and degradation of 2,4,6-trinitrotoluene by microbial metabolism and their interaction

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Defence Technology（防务技术） 2018年第2期14卷 151-164页

作者： mónica y. serrano-gonzález rashmi chandra carlos castillo-zacarias felipe robledo-padilla magdalena de j. rostro-alanis roberto parra-saldivar Tecnologico de Monterrey School of Engineering and ScienceCampus MonterreyAve.Eugenio Garza Sada 2501MonterreyN.L.CP 64849Mexico

2,4,6-trinitrotoluene(TnT) and its derivatives are nitrogen-containing aromatic compounds having chemical and thermal stability at ambient temperature and pressure. TnT has high toxicity and mutagenic activity to humans, plants and animals, thus decontamination processes are necessary. Many microorganisms are capable to bioremediate TnT such as bacteria from the genera Pseudomonas,Enterobacter, Rhodococcus, Mycobacterium, Clostridium and Desulfovibrio: fungus such as Phanerochate and Stropharia species are able to perform TnT biotransformation under aerobic and anaerobic conditions. In this work we review the state of TnT biodegradation by various routes: aerobic, anaerobic,combined, fungal, enzymatic, and bio-electrochemical.

关键词： Laccases Aerobic degradation Anaerobic degradation Fungal TnT degradation

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Spectral Response and Photoelectrochemical Properties of Cd1-xZnxSe Films

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Chinese Physics Letters 2010年第5期27卷 200-203页

作者： n. j. Suthan Kissinger G. Ghana Kumar K. Perumal j. Suthagar Department of Physics Loyola Institute of Technology and Sciences Loyola Nager Thovalai India Specialized Graduate School of Hydrogen and Fuel Cell Engineering Chonbuk National University Jeonju 561-756 Republic of Korea Department of Physics SRMV College of Arts and Science Coimbatore India Department of Physics Karunya University Coimbatore India

Cd1-xZnxSe films with different zinc contents are deposited by an electron beam evaporation technique onto glass substrates for applications in solid-state photovoltalc devices. The structural, optical and photoelectrochemical （PEC） properties of Cd1-xZnxSe films are studied. The host material Cd1-xZnxSe is prepared by the physical vapor deposition method of electron beam evaporation technique （PVD： EBE） under a pressure of 1 × 10^-5 mbar. The x-ray diffractogram indicates that these alloy films are polycrystalline in nature, hexagonal structure with strong preferential orientation of the crystallites along （002） direction. The optical properties shows that the band gap Eg varies from 2.08 to 2.84eV as zinc content varies from 0.2 to 0.8. A PEC cell of the configuration n-Cd1-xZnxSe/na2S-S-naOH is fabricated and the dynamic current-voltage characteristics in the dark atmosphere have been examined at room temperature. It has been found that both Voc and Iac decrease with the photoelectrode composition x. Efficiency η and fill factor （FF） also show similar variations. The material properties would be altered and excellently controlled by controlling the system composition x.

关键词： SPECTRAL sensitivity PHOTOELECTROCHEMISTRY ZInC selenide THIn films -- Optical properties EVAPORATIOn (Chemistry) SOLID state electronics PHOTOVOLTAIC cells MOLECULAR structure PHYSICAL vapor deposition

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Electronic Raman scattering in double semi-parabolic quantum wells

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Chinese Physics B 2013年第5期22卷 523-526页

作者： n. Zamani A. Keshavarz M. j. Karimi Department of Physics College of SciencesShiraz University of Technology

The differential cross-section for electronic Raman scattering in double semi-parabolic quantum wells of typical GaAs/AlxGa1-xAs is investigated numerically with the effective-mass approximation. The dependence of the differential cross-section on structural parameters such as the barrier width and the well widths is studied. Our results indicate that the electronic Raman scattering is affected by the geometrical size and can be negligible in the symmetric double-well case.

关键词： electronic Raman scattering double semi-parabolic quantum wells

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How to express tumours using membrane systems

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Progress in natural Science:Materials International 2007年第4期17卷 449-457页

作者： Miguel A. Gutiérrez-naranj. Mario j. Pérez-j.ménez Agustín Riscos-núez Francisco j. Romero-Campero Department of Computer Science and Artificial Intelligence University of Seville Avda. Reina Mercedes s/n41012SevillaSpain

In this paper we discuss the potential usefulness of membrane systems as tools for modelling tumours. The approach is followed both from a macroscopic and a microscopic point of view. In the first case, one considers the tumour as a growing mass of cells, focusing on its external shape. In the second case, one descends to the microscopic level, studying molecular signalling pathways that are crucial to determine if a cell is cancerous or not. In each of these approaches we work with appropriate variants of membrane systems.

关键词： tumour membrane system modeling.

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Rearrangements in Carnot Groups

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Acta Mathematica Sinica,English Series 2019年第7期35卷 1115-1127页

作者： j.an j. MAnFREDI Virginia n. VERA DE SERIO Department of Mathematics University of Pittsburgh Pittsburgh PA 15260 USA Facultad de Ciencias Econdmicas Universidad Nacional de Cuyo 5500 Mendoza Argentina

In this paper we extend the notion of rearrangement of nonnegative functions to the setting of Carnot groups. We define rearrangement with respect to a given family of anisotropic balls Br , or equivalently with respect to a gauge‖x‖, and prove basic regularity properties of this construction. If u is a bounded nonnegative real function with compact support, we denote by u*its rearrangement. Then, the radial function u* is of bounded variation. In addition, if u is continuous then u* is continuous, and if u belongs to the horizontal Sobolev space W 1,ph , then Dhu*(x)/Dh( ‖x‖ )| is in Lp. Moreover, we found a generalization of the inequality of P(o)lya and Szeg(o) ∫|Dhu*|p/Dh(‖x‖)|pdx≤C ∫|Dhu|pdx,where p ≥ 1.

关键词： Symmetrization rearrangements Carnot groups

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