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Electrochemical studies of Meldola blue-modified bilayer lipid membranes

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Chinese science Bulletin 1997年第3期42卷 203-207页

作者： Ding, l Wang, EK CHINEsE ACAD sCI CHANGCHUN INST APPL CHEMELECTROANALYT CHEM LABCHANGCHUN 130022PEOPLES R CHINA

BIlAYER lipid membranes (BlM) have been extensively regarded as a basic structure that forms the matrix of biological membranes. The properties of BlM may be altered by incorporation and modification and can be employed to study many membrane processes. Especially biosensors and bi-molecular electronic devices made by BlM have a wide application. Many kinds of organic dyes are known as biological stains and often used in biology, physiology, pharmacology and medicine. In general, coloring and staining processes involve adsorp-

关键词： Meldola blue bilayer lipid membranes (BlM) electrochemistry.

Brain-machine-brain interfaces as the foundation for the next generation of neuroprostheses

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National science Review 2022年第10期9卷 8-10页

作者： Miguel A.l.Nicolelis Department of Neurobiology Duke University International Institute of Neuroscience Edmond and lily safra

Back in 2011,my laboratory at the Duke University Center for Neuroengineering proposed a new variation on the already-classic paradigm known as brain-machine interfaces (BMIs)[1].In a series of experiments [2],we showed that monkeys could not only learn to employ electrical signals from large neuronal ensembles (300-700 neurons)located in the primary motor cortex(M1) to control the movements of an avatar arm and hand—*** a typical BMI paradigm—but that they could also interpret in real time,streams of electrical signals delivered directly to their primary somatosensory cortex (s1) via cortical *** strategy was created to allow these monkeys to perform a tactile discrimination task,without any interference from their physical ***,instead of using their real finger tips to perform such a task,this approach allowed our monkeys to use their brain activity to directly control the movements of’virtual finger tips to scan the texture of a series of virtual *** receiving,via cortical microstimulation,electrical signals directly into their s1 that were proportional to the virtual surface textures of these objects,the monkeys learned to quickly select the correct object that they needed to identify to receive a ***,

关键词： sPINAl-CORD sTIMUlATION

Embedding hollow Co3O4 nanoboxes into a three- dimensional macroporous graphene framework for high-performance energy storage devices

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Nano Research 2018年第5期11卷 2836-2846页

作者： Mengping li Maher F. EI-Kady Jee Y. Hwang matthew D. Kowal Kristofer Marsh Haosen Wang Zhijuan Zhao Richard B. Kaner Department of Chemistry and Biochemistry and California Nanosystems Institute University of California Los Angeles Los Angeles CA 90095 USA Department of Chemistry Faculty of Science Cairo University Giza 12613 Egypt Department of Materials science and Engineering University of California Los Angeles Los Angeles CA 90095 USA

Carbon materials are widely used for supercapacitor applications thanks to their high surface area, good rate capability, and excellent cycling stability. However, the development of high energy density carbon supercapacitors still remains a challenge. In this work, hollow Co3O4 nanoboxes have been embedded into three-dimensional macroporous laser-scribed graphene （lsG） to produce composite electrodes with improved electrochemical performance. Here, Co3O4 provides high capacity through fast and reversible redox reactions, while lsG serves as a conductive network to maintain high power. The open nanobox morphology is a unique solution for extracting the maximum capacity from Co3O4, resulting in electrodes whose surfaces, both internal and external, are accessible to the electrolyte. The electrochemical performance of the composite material is promising with a volumetric capacity of 60.0 C/cm^3 and a specific capacity of 542.3 C/g, corresponding to 682.0 C/g of the constituent Co3O4. With a low equivalent series resistance of 0.9 Ω, the Co3O4/lsG electrode is able to maintain 113.1% of its original capacity after 10,000 cycles. This work provides new insights into the design of high-performance carbon/metal oxide nano- composites for next-generation energy storage devices.

关键词： supercapacitor graphene cobalt oxide laser composite hybrid capacitor

Catalytically active interfaces in titania nanorod-supported copper catalysts for CO oxidation

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Nano Research 2020年第2期13卷 533-542页

作者： Wasim U.Khan season s.Chen Daniel C.W.Tsang Wey Yang Teoh Xijun Hu Frank l.Y.lam Alex C.K.Yip Department of Chemical and Process Engineering The University of Canterbury Christchurch 8041New Zealand Department of Civil and Environmental Engineering.The Hong Kong Polytechnic University Hong Kong.China school of Chemical Engineering The University of New South WalesSydneyNSW 2052Australia Department of Chemical and Biological Engineering The Hong Kong University of Science and TechnologyHong KongChina

One-dimensional titanium dioxide nanorod(TNR)-supported Cu catalysts(2.5 wt.%-12.5 wt.%)were synthesized using deposition-precipitation.X-ray photoelectron spectroscopy,temperature programmed reduction and CO chemisorption measurements showed that Cu doping over TNR offered metal-support interactions and interfacial active sites that had a profound impact on the catalytic *** role of the Cu-TNR interface was investigated by comparing the catalytic activity of Cu-TNR catalysts with that of pure CuO nanoparticles in CO *** presence of highly dispersed copper species,a high number of interfacial active sites,CO adsorption capacity and surface/lattice oxygen were found to be responsible for the excellent activity of 7.5CU-TNR(ie,Cu loading of 7.5 wt.%on TNR).Moreover,the Cu-TNR catalysts followed the langmuir-Hinshelwood reaction mechanism with 7.5CU-TNR,exhibiting an apparent activation energy of 44.7 kJ/*** TNR-supported Cu catalyst gave the highest interfacial catalytic activity in medium-temperature CO oxidation(120-240℃)compared to other commonly used supports,including titanium dioxide nanoparticles(TiO2-P25),silica(siO2)and alumina(Al20g)in which copper species were nonhomogeneously *** study confirms that medium-temperature CO oxidation is highly sensitive to the morphology and structure of the supporting material.

关键词： supported catalysts nanorod oxygen species interfacial active sites CO oxidation

RCD large Aspect-Ratio Tokamak Equilibrium with Magnetic Islands:a Perturbed Approach

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Communications in Theoretical Physics 2013年第3期59卷 375-378页

作者： F.l.Braga Instituto de Física Gleb Wataghin Departamento de Física AplicadaUniversidade Estadual de CampinasCampinasSP13083-859Brasil Instituto Federal de Ci encias e Tecnologia do Esp' rito santo Campus Santa TeresaES29600-000Brasil

solutions of Grad-shafranov （Cs） equation with Reversed Current Density （RCD） profiles present mag- netic islands when the magnetic flux is explicitly dependent on the poloidal angle. In this work it is shown that a typical cylindrical （large aspect-ratio） RCD equilibrium configuration perturbed by the magnetic field of a circular loop （simulating a divertor） is capable of generate magnetic islands, due to the poloidal symmetry break of the Gs equilibrium solution.

关键词： symmetry break magnetic islands Grad-shafranov equation reversed current density

lEADs-DC: A computer code for intense dc beam nonlinear transport simulation

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science China(Physics,Mechanics & Astronomy) 2011年第S2期54卷 236-238页

作者： lüJianQin ZHAO Xiaosong state Key laboratory of Nuclear Physics and Technology Peking UniversityBeijing 100871China

An intense dc beam nonlinear transport code has been developed. The code is written in Visual FORTRAN 6.6 and has ~13000 lines. The particle distribution in the transverse cross section is uniform or Gaussian. The space charge forces are calculated by the PIC (particle in cell) scheme, and the effects of the applied fields on the particle motion are calculated with the lie algebraic method through the third order approximation. Obviously,the solutions to the equations of particle motion are self-consistent. The results obtained from the theoretical analysis have been put in the computer code. Many optical beam elements are contained in the code. so, the code can simulate the intense dc particle motions in the beam transport lines, high voltage dc accelerators and ion implanters.

关键词： intense dc beam nonlinear trajectory lie algebraic method PIC scheme

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排便状态与血压水平或血压变异性的关联性

中华高血压杂志（中英文） 2024年第5期32卷 499-499页

作者：袁源(译) 练桂丽(审校) 不详

血压变异性是心血管疾病的独立预测因素。排便状态也与心血管疾病发病风险相关。该研究旨在探究血压变异性和排便状态的关联性。研究共计纳入184例参与者,基线时和1年后每月至少检测8天家庭血压。所有参与者采用HEM-9700T(OMRON Healthc... 详细信息

血压变异性是心血管疾病的独立预测因素。排便状态也与心血管疾病发病风险相关。该研究旨在探究血压变异性和排便状态的关联性。研究共计纳入184例参与者,基线时和1年后每月至少检测8天家庭血压。所有参与者采用HEM-9700T(OMRON Healthcare,欧姆龙健康医疗)检测家庭血压。采用1月间家庭收缩压变异系数评估日间收缩压变异性。

关键词：血压变异性心血管疾病发病风险健康医疗收缩压变异性血压水平独立预测因素欧姆龙

Quantum Chemical Calculations on 4-[2-(Tert-Butylamino)-1-Hydroxyethyl]-2-(Hydroxymethyl)Phenol by Density Functional Theory

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光谱学与光谱分析 2018年第11期38卷 3631-3637页

作者： Rubarani P Gangadharan s sampath Krishnan Department of Physics Rajalakshmi Engineering CollegeThandalamChennai 602105India Department of Applied Physics Sri Venkateswara College of EngineeringChennai 602117India

Density functional theory(DFT)calculations have been carried out for the compound 4-[2-(tert-butylamino)-1-hydroxyethyl]-2-hydroxymethyl)phenol(4 BAHEHMP)by using the B3 lYP method at the 6-311++G(d,p)basis set *** electric dipole moment(μ)and the first hyperpolarizability(α)values of the investigated molecule were *** and partial density of state(TDOs and PDOs)and also overlap population density of state(COOP or OPDOs)diagrams analysis were *** and lUMO energies confirm that charge transfer occurs within the *** addition Molecular Electrostatic Potential(MEP),Natural Bond Orbital analysis(NBO)and Non-linear Optical(NlO)properties are studied.

关键词： DFT NBO Density of states

strength and deformation characteristics of steel fibrous concrete beams

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Journal of Zhejiang University-science A(Applied Physics & Engineering) 2007年第2期8卷 257-263页

作者： sINGH Bhupinder sINGH s.P. KAUsHIK s.K Department of Civil Engineering Indian Institute of Technology Roorkee 247 667 India Department of Civil Engineering National Institute of Technology Jalandhar 144 011 India

The results of an analytical investigation of the flexural behaviour of steel Fibre Reinforced Concrete （sFRC） beams are presented. The complete response of the sFRC beams under displacement controlled static loading was obtained using nonlinear Finite Element （FE） techniques implemented with the help of ATENA 2D soRware. Issues relating to the behaviour of sFRC which have a direct bearing on the FE modelling are discussed with relevance to the software employed for the nonlinear analysis. Constitutive models amenable to numerical analysis for steel fibrous concrete are presented. The structural response throughout the loading regime was captured in terms of the load-deflection behaviour, which in addition to the post-peak response characterized the failure mode of the test beams. The crack patterns at crack initiation and at the end of the tests were also recorded. Experimental results from the specimens of two other investigators were used as control values for this investigation. The response of the specimens of this investigation was evaluated in terms of initial tangent stiffness, peak loads and toughness. Good match was obtained between the results from this investigation and corresponding experimentally obtained values, wherever available. The influence of the fibre content is reflected in the observed trends in peak loads, deflection at peak loads and toughness, which are in broad agreement with known behavioral patterns of sFRC.

关键词： Analysis Deformation strength steel Fibre Reinforced Concrete (sFRC) Toughness