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| 1 | A new method for solving Biot's consolidation of a finite soil layer in the cylindrical coordinate system显示文摘一个新方法被开发在圆柱的坐标系统解决 Biot 有限土壤层的巩固。分别地,关于时间 t ,并列θ
和并列 r 基于 Biot 的巩固和 Laplace 变换, Fourier 扩大和 Hankel 变换的技术的管理方程排水量的一种关系,压力,过量毛孔水压力和流动在扎根的表面之间被建立( z = 0 )并且在 Laplace 和 Hankel 变换领域的任意的深度 z 。能被在变换域指有限土壤层,排水量的解决方案,压力,过量毛孔水压力和任何点的流动的合适的边界条件获得。在物理领域的实在溶液能被转换获得 Laplace 和 Hankel 转变。 | Zhiyong Ai Quansheng Wang Chao Wu | 2008 | Acta Mechanica Sinica2008，24，6： | 5 |
| 2 | Amphiphilic dextran/magnetite nanocomposites as magnetic resonance imaging probes显示文摘Superparamagnetic iron oxide (SPIO) nanoparticles are effective contrast agents for enhancement of magnetic resonance imaging at the tissue, cellular or even molecular levels. High quality SPIO nanoparticles can be synthesized in the organic phase but need to be transferred into water before any biomedical applications. In this study, amphiphilic poly(ε-caprolactone) grafted dextran (Dex-g-PCL) was used as carriers for particle encapsulation and stabilization in the aqueous phase. Multiple SPIO nanoparticles were self-assembled together with the help of Dex-g-PCL during phase transfer from chloroform to water, and diameters of Dex-g-PCL/SPIO nanocomposites were (64 ± 22) nm through dynamic light scattering measurement. These nanocomposites were superparamagnetic at 300 K with saturated magnetization of 88 emu/g Fe. In the magnetic field of 1.5 T, Dex-g-PCL/SPIO nanocomposites had a T2 relaxivity of 363 Fe mL·mol-1·s-1. This unique nanocomposite brought significant mouse liver contrast with signal intensity changes of -60% at 5 min after intravenous administration. However, uptake of Dex-g-PCL/SPIO nanocomposites in liver reticuloendothelial cells (Kupffer cells) did not immediately happen at shorter time points (<4 h) as verified by histology studies, and it was evident that more iron staining would be located in Kupffer cells 24 h after contrast agent administration. After 24 h and 10 d, the signal intensities (SI) gradually recovered, and SI changes were -44% and -31%, respectively. From our observation, the time window for enhanced-MRI could last at least 12 days and totally recovered after 16 days. This novel sensitive MRI contrast agent may find potential applications in discovering small liver lesions such as early tumor diagnosis. | WANG QiaoYing SU HongYing XIA ChunChao SUN JiaYu LIU Chen WANG ZhiYong GONG QiYong SONG Bin GAO FaBao AI Hua GU ZhongWei | 2009 | Chinese Science Bulletin2009，54，17： | 5 |
| 3 | Layer-element analysis of multilayered saturated soils subject to axisymmetric vertical time-harmonic excitation显示文摘The analytical layer-elements for a single poroelastic soil layer and the underlying half-space are established using an algebraic manipulation and Hankel transform. According to the boundary conditions and adjacent continuity conditions of general stresses and displacements, a global matrix equation in the transform domain for multilayered saturated soil media is assembled and solved. Solutions in the frequency domain can be further obtained with an inverse Hankel transform. Numerical examples are used to examine accuracy of the present method and demonstrate effects of soil parameters and load conditions on dynamic responses of the multilayered poroelastic saturated soils. | Zhiyong AI Lihua WANG | 2017 | Applied Mathematics and Mechanics(English Edition)2017，38，9： | 2 |
| 4 | Extended Mindlin solution of horizontal force at a point in the interior of a layered soil显示文摘 | Ai Zhiyong Yang Min | 2000 | Journal of Tongji University2000，28，3： | 1 |
| 5 | Extended Sneddon and Muki solu-tions for multilayered elastic materials显示文摘 | AI Zhiyong YUE Zhongqi | 2002 | International Journalof Engineering Science2002，40，13： | 1 |
| 6 | Trans Nonferrous Met Soc China显示文摘 | Li Zhonghou Chen Zhiyong Liu Shasha et ai | 2008 | 18(4): 8192008，18，4： | 1 |
| 7 | Manganese ferrite nanoparticle micellar nanocomposites as MRI contrast agent for liver imaging显示文摘 | Jian Lu Shuli Ma Jiayu Sun Chunchao Xia Chen Liu Zhiyong Wang Xuna Zhao Fabao Gao Qiyong Gong Bin Song Xintao Shuai Hua Ai Zhongwei Gu | 2009 | Biomaterials2009，，15： | 1 |
| 8 | Vertical vibration of a pile in transversely isotropic multilayered soils 显示文摘 | AI Zhiyong LIU Chunlin | 2015 | J Sound Vib2015，357，12： | 1 |
| 9 | PTEN's regulation of VEGF and VEGFR1 expression and its clinical significance inmyeloid leukemia显示文摘 | Zhiyong C Wentong L Xiaoyang Y et aI | 2012 | Med Oncol2012，29，2： | 1 |
| 10 | Morphological and Molecular Data Revealed One New Species of the Short-legged Toads Brachytarsophrys Tian and Hu,1983(Anura,Megophryidae)from Yunnan,China显示文摘A new species of the genus Brachytarsophrys,named Brachytarsophrys wenshanensis sp.nov.,has been identified in southeastern Yunnan,China.This new species can be readily distinguished from other known congeners by both morphological criterion and molecular analysis of three mitochondrial gene segments:16S,COI,and Cytb.This classification is based on the following morphological characters:(1)medium body size(SVL 83.8–85.1 mm in two adult males);(2)enormous head,with head width nearly 1.2 times the length;(3)tongue pyriform,feebly notched;(4)non-meeting heels;(5)male lacking nuptial pad;(6)tibiotarsal articulation reaching angle of mouth when hindlimbs are extended forward alongside the body;(7)absence of outer metatarsal tubercle,inner metatarsal tubercle elliptic and approximately equal to first toe;(8)rudimentary toe webbing,webbing formula:Ⅰ(2–)–(2^(++))Ⅱ(2^(–))–(3^(++))Ⅲ(2^(½))–(4)Ⅳ(4^(+))–(2^(⅔))V;(9)lateral fringes narrow;(10)dermal ridge or glandular fold on dorsum absent;(11)pectoral glands distinct and irregular,femoral gland small.Our work increases the number of species within the genus Brachytarsophrys to 9. | Yanhong HE Renda AI Junkai HUANG Xianqi LI Xiaolong LIU Junlin LAN Jinmin CHEN Zhiyong YUAN | 2024 | Asian Herpetological Research2024，15，1： | 0 |
| 11 | Effect of Chromium Micro-alloying on the Corrosion Behavior of a Low-carbon Steel Rebar in Simulated Concrete Pore Solutions显示文摘A new low-cost corrosion-resistant rebar(HRB400 R) was designed and fabricated by chromium micro-alloying. The effects of Cr on the passivation and corrosion behavior of this rebar in the simulated concrete pore solutions were studied systematically, and its improved corrosion resistance was revealed. In the Cl--free saturated Ca(OH)_2 solution, the HRB400 R rebar presented nearly the same passive film and similar passivation ability compared to the common carbon steel rebar. In the long-term immersion corrosion test in the Cl--contained Ca(OH)_2 solution, the HRB400 R rebar presented improved corrosion resistance and obvious longer passivation-maintaining period. Micro-alloying of Cr element in the rebar matrix enhanced its corrosion resistance against Cl--attack and retarded the corrosion initiation in the matrix. In the alkaline Na Cl salt spraying test, the HRB400 R rebar also presented obviously lower mass-loss rate. The enrichment of Cr element in the rust layer improved its retardant effect to the penetration of aggressive medium, and decreased the corrosion propagation rate of the rebar. | 宋丹 蒋金洋 孙伟 MA Han ZHANG Jianchun CHENG Zhaojun JIANG Jinghua AI Zhiyong | 2017 | Journal of Wuhan University of Technology(Materials Science)2017，32，6： | 0 |
| 12 | Uncoupled state space solution to layered poroelastic medium with anisotropic permeability and compressible pore fluid显示文摘This paper presents an uncoupled state space solution to three-dimensional consolidation of layered poroelastic medium with anisotropic permeability and compressible pore fluid.Starting from the basic equations of poroelastic medium,and introducing intermediate variables,the state space equation usually comprising eight coupled state vectors is uncoupled into two sets of equations of six and two state vectors in the Laplace-Fourier transform domain.Combined with the continuity conditions between adjacent layers and boundary conditions,the uncoupled state space solution of a layered poroelastic medium is obtained by using the transfer matrix method.Numerical results show that the anisotropy of permeability and the compressibility of pore fluid have remarkable influence on the consolidation behavior of poroelastic medium. | Zhiyong AI Wenze ZENG Yichong CHENG Chao WU | 2011 | Frontiers of Structural and Civil Engineering2011，5，2： | 0 |
| 13 | 3-D CONSOLIDATION ANALYSIS OF LAYERED SOIL WITH ANISOTROPIC PERMEABILITY USING ANALYTICAL LAYER-ELEMENT METHOD显示文摘Starting with governing equations of a saturated soil with anisotropic permeability and based on multiple integral transforms,an analytical layer-element equation is established explicitly in the Laplace-Fourier transformed domain.A global matrix of layered soil can be obtained by assembling a set of analytical layer-elements,which is further solved in the transformed domain by considering boundary conditions.The numerical inversion of Laplace-Fourier transform is employed to acquire the actual solution.Numerical analysis for 3-D consolidation with anisotropic permeability of a layered soil system is presented,and the influence of anisotropy of permeability on the consolidation behavior is discussed. | Zhiyong Ai Yichong Cheng | 2013 | Acta Mechanica Solida Sinica2013，26，1： | 0 |
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