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THERMOCHROMIC POlYMER MATERIAlS

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Chinese Journal of Polymer Science 2007年第2期25卷 123-135页

作者： A.Seeboth A.Klukowska R.Ruhmann d.l tzsch Fraunhofer Institute for Applied Polymer Research Volmerstraβe 7B12489 BerlinGermany

Thermochromic polymers will play an extremely important role in the next future. The physical background of thermochromism and the state of development of thermochromic polymers based on light absorption effects are reported. In detail, the interactions between the polymer matrix and the thermochromic composite - composed of leuco or indicator dyes - are discussed on a molecular level. Thermochromic hydrogels with extremely high transparency, an outstanding switching behavior from colorless to colored or between different colors is presented. Preparation of thermosetting and thermoplastic polymers, including the resulting optical, and, for the first time, the mechanical properties are discussed in relation to matrix tuned high-resistant microcapsules.

关键词： Thermochromism Polymer matrix Microcapsule Organic dye Mechanical property.

Oligodendroctyes:the forgotten players of diabetes pathophysiology

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Neural Regeneration Research 2024年第11期19卷 2349-2350页

作者： Juan Antonio lópez-Villodres Beatriz García-díaz departamento Fisiología Humana Histología HumanaAnatomía Patológica y Educación Física y DeportivaFacultad de MedicinaUniversidad de MálagaMálagaSpain UGC Neurociencia.Instituto de Investigación Biomédica de Málaga y Plataforma en Nanomedicina(IBIMA Plataforma Bionand) MálagaSpain

Oligodendrocytes(Ols),glial cells that provide myelin sheaths to axons in the central nervous system(CNS),have a dual ***,this myelin fatty cover around the axons protects the nerves and is crucial for the saltatory propagation of action *** and not less important,Ols provide trophic support to neurons and ***,Ol metabolism is important for Ol well-being and the proper accomplishment of their functions,and Ol metabolism energetics directly affect the energy metabolism of neighboring neurons.

关键词： metabolism nerves myelin

Geochronology and origin of Paleoproterozoic charnockites with old crustal signature in the Haisyn block of the Ukrainian shield

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Acta Geochimica 2023年第3期42卷 393-408页

作者： M.Reshetnyk O.Zaiats l.Shumlyanskyy d.Starokadomsky l.Stepanyuk The National Museum of Natural History of the NAS of Ukraine 15Bohdan Khmelnytsky Str.Kyiv 01030Ukraine M.P.Semenenko Institute of Geochemistry Mineralogy and Ore Formation of the NAS of Ukraine34Acad.Palladin Ave.Kyiv 03142Ukraine School of Earth and Planetary Sciences Curtin UniversityGPO Box U1987PerthWA 6845Australia Chuiko Institute of Surface Chemistry of the NAS of Ukraine 17Generala Naumova Str.Kyiv 03164Ukraine

Results of a geochemical and geochronological study of the Paleoproterozoic rock assemblage in the Haisyn block of the Ros-Tikych domain of the Ukrainian Shield are *** the block,the Haisyn Complex comprises granitoids,including pyroxene-bearing diorites,quartz diorites,granodiorites,amphibole-biotite and biotite granites,and aplite and pegmatite *** U-Pb isotope age of charnockitic syenite belonging to the Haisyn Complex was defined at 2027±6 *** age coeval with the time of granulite facies metamorphism and emplacement of numerous granitic intrusions in the *** Sm–Nd apatite isochron yielded an age of 2100±150 ***εNd isochron value of-5 indicates a long crustal residence time of the crustal *** data do not indicate any enrichment of the studied rocks in relation to the Eoarchean and Neoarchean charnockites developed in the same ***,if the model of partial melting of the older crustal protolith is involved then the degree of melting must be quite ***,deep negative anomalies of Sr,Eu,Zr,and Ti indicate that plagioclase,zircon,and Fe–Ti oxides probably remained unmelted in the *** Haisyn block was buried in the lower crust at high temperature and pressure conditions in the Paleoproterozoic *** a situation resulted in partial melting of the existing crust and formation of melts,containing undigested zircon and bearing ancient Nd isotope signature.

关键词： Paleoproterozoic Charnockite Ukrainian Shield U–Pb dating Crustal evolution

Study on Statistical Out lier det ection and labelling

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International Journal of Automation and computing 2020年第6期17卷 788-811页

作者： Pawel d.domanski Institute of Control and Computation Engineering Warsaw University of TechnologyWarsaw 00-665Poland

Outliers accompany control engineers in their real life *** trial reality is much richer than eleme ntary linear,quadratic,Gaussian *** appear due to various and varying,often unknown,*** meet research interest in statistical and regression analysis and in data *** are a lot of interesting algorithms and approaches to outlier detection,labelling,filtering and finally ***,their impact on control systems has not been found sufficient attention in *** influence is frequently unnoticed,ignored or not *** work focuses on the subject of outlier detection and labelling in the cont ext of control system performance *** ted statistical data-driven approaches are analyzed,as t hey can be easily implemented with limited a priori *** study consists of a simulation study followed by the analysis of real control *** nt generation mechanisms are Simula ted,like overlapping Gaussian processes,symmetric and asymmetric,artificially shifted points and fat-tailed *** observations are confronted with industrial control loops *** work concludes with a practical procedure,which should help practitioners in dealing with outliers in control engineering temporal data.

关键词： Outlier detection control loop quality statistical analysis robust estimation heavy tails.

ElECTRONIC STRUCTURE OF THE laNi_(5-x)Ga_x INTERMETAllIC COMPOUNdS

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Acta Metallurgica Sinica(English letters) 2008年第3期21卷 157-162页

作者： d. Chen G.X. li d.l. Zhang T. Gao department of Physics and Electronic Engineering Xinyang Normal University Xinyang 464000 China College of Science Qingdao Agriculture University Qingdao 266109 China Institute of Atomic and Molecular Physics Sichuan University Chengdu 610065 China

The equilibrium structures and electronic structure of laNi5-xGax （x=0, 0.5, 1.0） compounds have been investigated by all-electron calculations. Based on the full geometry optimization, the densities of states and electron densities of laNi5-xGax are plotted and analyzed. It is clear that the substitution of Ga at the Ni site leads to a progressive filling of the Ni-d bands, the ionic interaction between Ni and Ni, with Ga plays a dominant role in the stability of laNi5-xGax compounds. The smaller the shift of EF toward higher energy region, the more stable the compounds will be. The increased contribution of the Ni-d-Ga-d interactions near EF and the low energy metal-gallium bonding bands indicate that the compounds become more stable. The results are compared with experimental data and discussed in light of previous studies.

关键词： FlAPW and GGA laNi5-xGax Intermetallie compound Electronic structure

REITERATEd HOMOGENIZATION OF NONlINEAR MONOTONE OPERATORS

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Chinese Annals of Mathematics,Series B 2001年第1期22卷 1-12页

作者： J.l.lIONS d.lUKKASSEN l.E.PERSSON P.WAll CollegedeFrance 3rued＇Ulm75231Pariscedex05France NarvikInstituteofTechnologyandNorutTechnologyltd. N-8505NarvikNorway departmentofMathematics LuleaUniversityofTechnologyS-97187LuleaSweden

In this paper, the authors study reiterated homogenization of nonlinear equations of the form --div(a(x, x/ε x/ε, duε) = f, where a is periodic in the first two arguments and monotone in the third. It is proved that ue converges weakly in W1,P(Ω) (and even in some multiscale sense), as ε→ 0 to the solution uo of a limit problem. Moreover, an explicit expression for the limit problem is given. The main results were also stated in [15]. This article presents the complete proofs of these results.

关键词： Homogenization Nonlinear monotone operators Nonlinear equation

Soil conditioning tests of clay for EPB tunnelling

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Underground Space 2022年第4期7卷 483-497页

作者： C.Todaro A.Carigi l.Peila d.Martinelli d.Peila dIATI Polytechnic University of TurinItaly IGG CNRItaly

Tunnelling with earth pressure balance-tunnel boring machine(EPB-TBM)in clayey soil requires a careful conditioning to reduce the effect of clogging and *** the last decade,many researches have been carried out to understand how to reduce these negative behaviors using conditioning agents,and different laboratory test procedures have been proposed using both powdered clay and clay chips to quantify and assess the effect of conditioning in terms of reduction of clogging and *** this paper a review of the various proposed tests is ***,it can be seen that no unified assessment method on the soil conditioning is available and therefore the designers do not have consistent data on which their choices are *** present research proposes a laboratory test methodology to study clay conditioning taking both the behavior of chips and powdered clay into *** proposed procedure has been applied on two different clays,and the test results are presented and discussed to show how the proposed methodology could be applied.

关键词： Tunnel EPB-TBM Soil conditioning laboratory tests

Optimal Port design Minimizing Standing Waves with A Posteriori long Term Shoreline Sustainability Analysis

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China Ocean Engineering 2021年第6期35卷 802-813页

作者： Megan COOK Frédéric BOUCHETTE Bijan MOHAMMAdI léa SPRUNCK Nicolas FRAYSSE BRl Ingénierie Nı̂mes 30000France GEOSCIENCES-M University of MontpellierCNRSMontpellier 34090France GlAdYS University of MontpellierCNRSLe Grau du Roi 30240France IMAG University of MontpellierCNRSMontpellier 34090France

Optimization theory is applied to a coastal engineering problem that is the design of a *** approach was applied to the redesign of la Turballe Port in order to increase the exploitable surface area and simultaneously reduce the occurrence of long waves within the *** defined the cost function as a weighted function of wave amplitude and with the chosen parameterization of the port,results show that an extended jetty and a widened mole yield a unique optimal *** work demonstrates that numerical optimization may be quick and efficient in the identification of port solutions consistent with classic engineering even in the context of complex problems.

关键词： optimization coastal engineering harbour design hydrodynamics shoreline analysis

Evaluation of carbon-based nanosorbents synthesised by ethylene decomposition on stainless steel substrates as potential sequestrating materials for nickel ions in aqueous solution

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Journal of Environmental Sciences 2012年第9期24卷 1559-1568页

作者： X.J.lee l.Y.lee l.P.Y.Foo d.G.Hassell department of Chemical and Environmental Engineering University of Nottingham Malaysia CampusJalan Broga43500 SemenyihSelangor Darul EhsanMalaysia.

The present work covers the preparation of carbon-based nanosorbents by ethylene decomposition on stainless steel mesh without the use of external catalyst for the treatment of water containing nickel ions （Ni2＋）. The reaction temperature was varied from 650 to 850℃, while reaction time and ethylene to nitrogen flow ratio were maintained at 30 rain and 1：1 cma/min, respectively. Results show that nanosorbents synthesised at a reaction temperature of 650℃ had the smallest average diameter （75 nm）, largest BET surface area （68.95 m2/g） and least amount of impurity （0.98 wt.% Fe）. A series of batch sorption tests were performed to evaluate the effects of initial pH, initial metal concentration and contact time on Ni2~ removal by the nanosorbents. The equilibrium data fitted well to Freundlich isotherm. The kinetic data were best correlated to a pseudo second-order model indicating that the process was of chemisorption type. Further analysis by the Boyd kinetic model revealed that boundary layer diffusion was the controlling step. This primary study suggests that the prepared material with Freundiich constants compared well with those in the literature, is a promising sorbent for the sequestration of Ni2＋ in aqueous solutions.

关键词： adsorption nanosorbent nickel ions isotherms kinetics