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Quack m.d.cine

中华医学杂志 1916年第1期 84-91页

作者： ARTHUE STANLEY, m.d. director of the municipal Health Laboratory Shanghai

At the present time the subject of health is much before the public. matters of health and disease are discussed at the dinner table and in the drawing room which a little while ago would have been reserved for the privacy of the consulting room. Consequently there is much imaginary disease and as a natural result a corresponding number of imaginary rem.d.es. It is needless to say that there is also much real disease. A great deal is preventable or curable, but much of this suffering is not

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Stabilization of Traffic Flow Based on the multiple Information of Preceding Cars

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Communications in Computational Physics 2008年第4期3卷 899-912页

作者： d.F.Xie Z.Y.Gao X.m.zhao State Key Laboratory of Rail Traffic Control and Safety Beijing Jiaotong UniversityBeijing 100044China. Institute of System Science School of Traffic and TransportationBeijing Jiaotong UniversityBeijing 100044China.

To enhance the stability of traffic flow,a new car-following m.d.l is proposed by taking into account the support of intelligent transportation system(ITS)information,which includes both the headway and the velocity difference of multiple preceding *** new m.d.l is based on the Optimal Velocity(OV)m.d.l and its extended *** stability condition of the m.d.l is obtained by using the linear stability *** nonlinear analysis,the m.d.fied Korteweg-de Vries equation is constructed and solved,and the traffic flow is classified into three types,***,metastable,and *** jam phase can thus be described by the kink-antikink soliton solution for the m.d. *** numerical simulation results show that compared with previous m.d.ls considering only one of the ITS information,the proposed m.d.l can suppress traffic jams more efficiently when both headway and velocity difference of arbitrary preceding cars are taken into *** results of numerical simulation coincide with the theoretical ones.

关键词： Traffic flow car-following m.d.l stability analysis ITS information

magnetization reversal of antiferromagnetically coupled perpendicular anisotropy films driven by current

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Journal of materials Science & Technology 2018年第5期34卷 832-835页

作者： X.T.zhao Y.Q.zhao W.Liu Z.m.d.i T.T.Wang X.G.zhao Z.d.Zhang Shenyang National Laboratory for materials Science Institute of Metal ResearchChinese Academy of Sciences

By inserting an ultrathin Pt layer at Co/Ru interface,we established antiferromagnetic coupling with outof-plane magnetization in Co/Ru/Co film stacks fabricated by *** achieve configuration suitable for free layer,the magnetic properties of the stacks have been investigated by changing the thickness of Co,Ru and Pt layers using an orthogonal wedges *** is found that magnetic properties for upper Co layer thinner than 0.5 nm are sensitive to little change in Ru *** continuity of upper Co layer by slightly increasing the thickness can effectively increase the squareness of minor *** switching magnetization of synthetic antiferromagnetic（SAF） structure is achieved by dC current under an in-plane static magnetic field of ± 500 *** structure is very promising for free layer in spintronic application.

关键词： magnetic materials multilayer structure Wedge Exchange coupling Antiferromagnetic

dielectric and infrared properties of SrTiO_3 single crystal doped by 3d (V,mn,Fe,Ni) and 4f (Nd,Sm,Er) ions

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Chinese Physics B 2014年第2期23卷 369-374页

作者： S.maletic d.maletic I.Petronijevic J.dojcilovic d.m.Popovic Faculty of Physics University of Belgrade Institute of Physics University of Belgrade

In this study, the effects of doping by 3d （V, mn, Fe, Ni） and 4f （Nd, Sm, Er） ions on dielectric and infrared properties of SrTiO3 （STO） single crystals are investigated. It is well known that doping of the SrTiO3 can change the dielectric properties of the STO from an insulator to an n-type semiconductor, and even to a metallic conductor. dielectric and infrared （IR） properties of the undoped STO and doped STO single crystals are analyzed using dielectric spectroscopy （80 kHz-5 mHz）, transmission （200 cm^-1-4000 cm^-1）, and reflection spectroscopy （50 cm^-1-2000 cm^-1）. It is found that doping by the 3d ions reduces the value of dielectric permittivity, but the trend of temperature dependence of the dielectric permittivity remains almost unchanged. On the other hand, dielectric spectroscopy measurements for samples doped by 4f ions show the anomalous behaviors of the dielectric permittivity at temperatures around the temperature of the structural phase transition. There are two fractures of temperature dependences of inverse dielectric permittivity εr^-1 （T）. Transmittance spectroscopy measurements show that there are differences in the shape of the spectrum in the m.d.IR region between the undoped STO and the one doped by 4f ions. The differences in the reflectance spectrum between the STO：Nd and STO are analyzed in detail.

关键词： doping dielectric properties phase transitions infrared spectroscopy

Performance Tradeoff Between Energy Conservation and User Fairness for d2d Communication Underlaying Cellular Networks

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Chinese Journal of Electronics 2017年第3期26卷 600-607页

作者： TANG Rui zhao Jihong QU Hua School of Electronics and Information Engineering Xi'an Jiaotong University School of Communication and Information Engineering Xi'an University of Posts and Telecommunications

device-to-device(d2d)communication is viewed as an emerging technology in the fifth generation systems to fully explore the proximate gain residing in local communicating *** the interference imposed to the existing Cellular links(C-link)should be addressed in the optimization for underlaid d2d links(d-link).There is a performance tradeoff between Energy conservation(EC)and the number of links with satisfied Quality-of-service(Qo S)requirement or System capacity(SC).We aim to weight the above tradeoff for d-links by specifying it into optimizing EC on the condition that SC is maximized and Qo S requirements of C-links are fully guaranteed.A threestage joint power control and channel assignment mechanism is proposed including feasibility check,SC maximization and greedy optimization for *** to numerical results,we illustrate the necessity to conduct our performance tradeoff and observe the gain when multiple resource variables are in elaborate cooperation.

关键词： device-to-device(d2d) communication Energy conservation User fairness Resource allocation

Amorphous oxide semiconductor for monolithic 3d dRAm: an enabler or passer-by?

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National Science Review 2024年第3期11卷 19-20页

作者： Shujuan mao Guilei Wang Chao zhao Beijing Superstring Academy of memory Technology

Since dynamic random-access memory(dRAm) was invented in 1968 and put to market in the 1970s, 1 transistor plus 1 capacitor(1T1C)(Fig. 1a) cells have been used to take advantage of their structural simplicity and ease...

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Recent advancements in 2d nanomaterials for cancer therapy

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Science China Chemistry 2018年第10期61卷 1214-1226页

作者： menghuan Li Zhong Luo Yanli zhao division of Chemistry and Biological Chemistry School of Physical and Mathematical Sciences Nanyang Technological University College of Life Science Chongqing University School of materials Science and Engineering Nanyang Technological University

Since mechanical exfoliation of graphene in 2004, unprecedented scientific and technological advances have been achieved in the development of two-dimensional(2 d) nanomaterials. These 2 d nanomaterials exhibit various unique mechanical, physical and chemical properties on account of their ultrathin thickness, which are highly desirable for many applications such as catalysis, optoelectronics, energy storage/conversion, as well as disease diagnosis and therapeutics. In this review, we summarized recent progress on the design and fabrication of functional 2 d nanomaterials capable of being applied for the cancer treatment including drug delivery, photodynamic therapy, and photothermal therapy. Their anticancer mechanisms were discussed in detail, and the related safety concerns were analyzed based on current research developments. This review is expected to provide an insight in the field of 2 d nanostructured materials for anticancer applications.

关键词： 2d nanomaterials cancer therapy drug delivery photodynamic therapy photothermal therapy

2d mesoporous materials

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National Science Review 2022年第5期9卷 12-14页

作者： Yan Ai Wei Li dongyuan zhao department of Chemistry Laboratory of Advanced Materials Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials and State Key Laboratory of Molecular Engineering of PolymersFudan University

mesoporous materials with high surface areas,large pore volumes,tunable nanostructures and diverse compositions have been widely investigate d,and show great promise in adsorption,catalysis,separation,biom.d.cine,ener...

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A 3d evaluation method of cutting surface topography of carbon/carbon(C/C) composite

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High Technology Letters 2010年第4期16卷 366-372页

作者：周鹏 zhao Fuling Key Laboratory for Precision and Non-traditional machining Technology of ministry of Education Dalian University of Technology Dalian 116024 P.R. China

This paper aims to establish a 3d evaluation method for cutting surface topography of C/C composites. The cutting surface is measured by Talyscan 150, using 3d non-contact measurement. By evaluating 2d and 3d roughness of C/C composite and duralumin, the 2d evaluation method of the cutting surface topography of C/C composite loses a lot of information, and the characteristics of the surface topography of C/C composite can be comprehensively and authentically evaluated only by the 3d evaluation method. Furthermore, 3d amplitude and spatial parameters are adopted to evaluate the surface and the results show that： the topography of the C/C composite is anisotropy and there are no obvious feeding textures but abrupt peaks and valleys on surface of the C/C composite, which indicates that the machining mecha- nism is different from that of the metal. In conclusion, The C/C composite surface is evaluated using a 3d evaluation method, the roughness error is small, and the unique topography characteristics earl be au- thentically evaluated.

关键词： C/C composite surface topography 3d evaluation method