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| 1 | VARIATIONAL PRINCIPLFS OF NONLINEAR PIEZOTHERMOELASTIC MEDIA显示文摘Through the phenomenological approach,the nonlinear constitutive equations couplingthe electro/magnetic therrnoelastic media are derived.Several nonlinear variational principles forpiezothermoelastic continua are presented and employed to formulate the incremental variational princi-ples which are of important significance in practical applications such as the nonlinear finite elementanalysis,the buckling,postbuckling and dynamic stability analyses of piezoelectric smart structures. | Chen Changqing Shen Yapeng Tian Xiaogeng (Department of Engineering Mechanics,Xi’an Jiaotong University,Xi’an 710049,China) | 1998 | Acta Mechanica Solida Sinica1998，11，1： | 4 |
| 2 | A direct finite element method study of general- ized thermoelastic problems 显示文摘 | TIAN Xiaogeng SHEN Yapeng CHEN Changqing | 2006 | International Journal of Solids and Structures2006，43，78： | 1 |
| 3 | A MODEL FOR THE RELEASE BEHAVIOR OF DRUGS FROM HYDROGEL NANOPARTICLE显示文摘A model to correlate and predict the release behavior of drugs from hydrogel nanoparticles is presented in this paper. The nanoparticle is considered as a combination of a shell of an elastic semipermeable membrane and a core of a fluid phase (After swelling equilibrium). The fluid core consists of network building materials and other components that are able to partition in hydrogel nanoparticle phase and surrounding coexisting liquid phase, and is enveloped by the membrane shell. The excess Gibbs energies of the hydrogel nanoparticle phase and the surrounding coexisting fluid phase are expressed e.g. using UNIQUAC equation with “free-volume” contribution for non-ionic solution and VERS-model for ionic one. The elastic properties of polymer network could be described, for example, by the “phantom network” theory. | XU Xiaoping LI Zhongqin CHEN Xiaogeng LV Fengjiao | 2006 | Chinese Journal of Reactive Polymers2006，15，2： | 1 |
| 4 | PREPARATION AND CHARACTERIZATION OF DOXORUBICIN-LOADED MAGNETIC ANTICANCER NANOPARTICLES显示文摘Doxorubicin(ADM)-loaded magnetic anticancer nanoparticles,using Fe3O4 as core, doxorubicin as model drug and polyvinylpyrrolidone (PVP) as matrix, were prepared by inverse emulsion polymerization. The experimental results showed that the average diameter of Fe3O4 particles was 19.8nm. The X-ray diffraction indicated that the prepared Fe3O4 particle was pure cubic Fe3O4. The results obtained by SEM showed the magnetic nanoparticles under optimal operating condition had a smooth spherical surface , LLS showed an average size of 78.7nm. And IR results demonstrated that they consisted of ADM, PVP and Fe3O4. | LV Fengjiao LIN Huaxiang CHEN Xiaogeng XU Xiaoping | 2007 | Chinese Journal of Reactive Polymers2007，16，1： | 0 |
| 5 | THE PREPARATION OF DOXORUBICIN-POLYVINYLPYRROLIDONE-NANOPARTICLES BY INVERSE EMULSION POLYMERIZATION显示文摘Doxorubicin-loaded nanoparticles,using doxorubicin(ADM)as model drug and vinylpyrrolidone as matrix,were prepared by inverse emulsion polymerization in the paper.The nanoparticles were characterized by telescope electron microscopy(TEM),laser light scattering technique(LLS)and infrared spectrum(IR).LLS test showed that the optimal prepared ADM-loaded nanoparticles had an average size 18.8nm and a narrow size distribution between 15nm and 32nm,which was consistent with the result obtained by TEM.And IR results indicated that the nanoparticles consisted of ADM and polyvinylpyrrolidone(PVP). | LV Fengjiao LIN Huaxiang XU Xiaoping CHEN Xiaogeng | 2006 | Chinese Journal of Reactive Polymers2006，15，1： | 0 |
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