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The value of postoperative hepatic regional chemotherapy in prevention of recurrence after radical resection of primary liver cancer

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World journal of Gastroenterology 2000年第1期6卷 131-133页

作者： Wu ZQ fan j Qiu Sj Zhou j Tang ZY Liver Cancer Institute Shanghai Medical UnviersityShanghai 200032China

INTRODUCTIONIn China,primary liver cancer (PLC) ranks secondin cancer mortality since the *** the field ofPLC treatment,surgical resection remains the best,which includes large PLC resection,small PLCresection,re-rese... 详细信息

关键词： Subject headings liver neoplasms/drug therapy neoplasm recurrence/prevention and control regional chemotherapy

REPRESENTATION OF PLASTICITY AT AN INTERFACE CRACK BY INCLINED STRIP YIELD SUPERDISLOCATION MODEL

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Acta Mechanica Solida Sinica 1994年第3期7卷 265-273页

作者： X.j.fan K.WATANABE Institute of Applied Mechanics.Taiyuan University of Technology Taiyuan 030024ShanxiP.R.China Institute of Industrial Science University of TokyoRoppongi 7-22-1Tokyo 106Japan

The basic equations of the representation of plasticity at an interface crack by an inclined strip yield superdislocation model are derived. With a special combination of the material properties and small-scale yielding case, the problem is reduced to an algebraic equation in an unknown, the ratio of the plastic zone size. Some discussions on the limitations of this model are presented.

关键词： Algebra Cracks Dislocations (crystals) Friction Interfaces (materials) Mathematical models Strain Vectors

Remarkably high fracture toughness of HfNbTaTiZr refractory high-entropy alloy

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journal of Materials Science & Technology 2022年第28期123卷 70-77页

作者： X.j.fan R.T.Qu Z.F.Zhang Shi-changxu Innovation Center for Advanced Materials Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China Nano Science and Technology Institute University of Science and Technology of ChinaSuzhou 215132China

High-entropy alloys(HEAs)with face-centered cubic(FCC)phase such as CoCrFeMnNi or CoCrNi generally exhibit ultra-high fracture toughness but relatively low *** contrast,body-centered cubic(BCC)HEAs often display higher strengths,but the few reports on fracture toughness measurement demonstrate low toughness *** we show that the BCC HfNbTaTiZr refractory HEA,which possesses a combination of high strength,good tensile ductility and excellent high-temperature properties,also exhibits a remarkably high fracture *** using the"single specimen"compliance method for j-integral measurement according to the ASTM E1820–17 standard,its fracture toughness K_(jIC)was experimentally determined to be 210 MPa m^(1/2),which renders this HEA among the toughest metallic *** excellent damage tolerance makes the HEA promising for applications as high-temperature structural materials such as in aerospace field.

关键词： High-entropy alloys BCC structure Fracture toughness j-integral

NUMERICAL INVESTIGATION ON FLOW CHARACTERISTICS IN RIBBED BEND

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journal of Hydrodynamics 2001年第2期13卷 111-120页

作者： Yao, j. fan, j.R. Zhang, X.Y. Cen, K.F. Dept. of Energy Engineering Zhejiang Univ. Hangzhou 310027 China

Previous research by the author has proved that ribbed bend technology is a simple and efficient anti-erosion method. The present paper is a further study to unveil the mechanism of the technology by using numerical method. The flow characteristics in ribbed bend were studied. A k-Ε turbulence model was used and the simulations were carried out in the body-fitted coordinates. This procedure was confirmed to be credible by showing the satisfactory agreement between the predications and experimental results. It is concluded that the character of the longitudinal flow in ribbed bend especially in the concave parts between ribs has a beneficial effect on increasing the anti-erosion ability of ribbed bend but the secondary flow has little effect on determining the particle trajectory.

关键词： Boundary conditions Differential equations Erosion Mathematical models Numerical methods Three dimensional

Numerical Study of Heat and Moisture Transfer in Textile Materials by a Finite Volume Method

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Communications in Computational Physics 2008年第9期4卷 929-948页

作者： C.Ye H.Huang j.fan W.Sun Department of Mathematics City University of Hong KongKowloonHong Kong. Department of Mathematics&Statistics York UniversityTorontoOntario M3J 1P3Canada. Institute of Textiles and Clothing Hong Kong Polytechnic UniversityHong Kong

This paper focuses on the numerical study of heat and moisture transfer in clothing assemblies,based on a multi-component and multiphase flow model which includes heat/moisture convection and conduction/diffusion as well as phase change.A splitting semi-implicit finite volume method is proposed for solving a set of nonlinear convection-diffusion-reaction equations,in which the calculation of liquid water content absorbed by fiber is decoupled from the rest of the *** method maintains the conservation of air,vapor and heat flux(energy).Four types of clothing assemblies are investigated and comparison with experimental measurements are also presented.

关键词： Fibrous porous medium multi-component flow clothing assemblies finite volume method condensation/evaporation.

THE INVESTIGATION ON PLASMA ARC TREATMENT OF CHROMIUM PLATED ALLOY STRUCTURE STEEL

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Acta Metallurgica Sinica(English Letters) 2005年第3期18卷 289-294页

作者： X.M.fan j.W.Huang K.H.Wang Q.Liu DepartmentofMaterialsScienceandEngineering NanjingUniversityofScienceandTechnologyNanjing210094China

The technology of plasma arc was used to modify the interface adhesion between c hromium coating and steel substrate. The interface microstructure was studied as a function of plasma arc processing parameters. Microstructure analysis was per formed by optical microscopy, scanning electron microscopy and electron probe. T he microhardness distribution along the depth of a cross-section of the chromium coating and the substrate was measured. The results show the energy density of transferred plasma arc is obviously higher than plasma non-transferred arc. The molten interface was obtained by plasma transferred arc. Interfaces between chro mium coating and steel substrate can be divided by plasma non-transferred arc in to three classes: non-molten, a little molten and molten. Good interface bonding was obtained by proper process parameters. The microhardness of chromium coatin g decreases with increasing energy density of plasma arc.

关键词： plasma transferred arc plasma non-transferred arc coating hard-

SYNTHESIS AND SOLID STATE SINTERING OF W-Ni-Fe NANO-COMPOSITE POWDERS

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Acta Metallurgica Sinica(English Letters) 2000年第3期13卷 917-920页

作者： Qu, X.H. fan, j.L. Li, Y.M. Huang, B.Y. Central South Univ of Technology Changsha China

The mixture of 90 wt%W, 7 wt%Ni and 3 wt%Fe elemental powders was milled in a planetary high-energy ball mill. The evolution of the structure during milling and the sintering behavior of the milled powders were tested. The results showed that by mechanical alloying W(Ni, Fe) supersaturated solid solution with nano-meter size formed, which can enhance the sintering process. Fully dense alloy from the milled powders was obtained through solid state sintering. The tensile strength of the obtained alloy is over 900 MPa which is comparable to that of the alloy sintered by traditional liquid-phase sintering from un-milled powders of the same composition.

关键词： Tungsten alloys Nickel alloys Iron alloys Mechanical alloying Powder metals Sintering Morphology Tensile strength

Dynamic properties of low-density expandable polystyrene concrete materials

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Defence Technology(防务技术) 2025年第1期43卷 94-108页

作者： jue Han Hualin fan Army Engineering University of PLA Nanjing 210007China Research Center of Lightweight Structures and Intelligent Manufacturing State Key Laboratory of Mechanics and Control of Aerospace StructuresNanjing University of Aeronautics and AstronauticsNanjing 210016China Henan International joint Laboratory of Dynamics of Impact and Disaster of Engineering Structures Department of Civil EngineeringNanyang Institute of TechnologyNanyang 473004China

Expanded polystyrene(EPS)concrete,known for its environmental friendliness,energy absorption capacity,and low impedance,has significant potential application in the fields of wave absorption and vibration *** study designed and prepared EPS concrete materials with four levels of ***-static uniaxial compression and Split Hopkinson Pressure Bar(SHPB)impact tests were conducted to obtain stress-strain curves,elastic moduli,failure modes,energy absorptions,and strain rate effects of the EPS concrete under quasi-static and dynamic loading *** influences of density on various performance indicators were *** combining the Zhu-Wang-Tang(ZWT)constitutive model with a modified elastic-brittle model,a modified dynamic constitutive model was *** accuracy of the model was validated by the experimental *** results indicate that the addition of EPS particles enhances the ductility of the EPS *** EPS concrete has significant strain rate effect,which gets stronger as density *** modifiedconstitutive model accurately characterizes the dynamic stress-strain curves of the EPS concrete.

关键词： EPS concrete Impact behavior Constitutive model SHPB test

东亚一次典型切断低压引起的平流层空气深入侵过程的分析

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中国科学：地球科学 2014年第1期44卷 2315-2327页

作者：李丹卞建春范秋君中国科学院大气物理研究所中层大气和全球环境探测重点实验室北京100029 中国科学院大学地球科学学院北京100049

利用ERA-Interim再分析资料、卫星资料以及轨迹模式,对2010年6月19-23日东亚夏季一次典型切断低压（COL）过程中的动力、热力及化学结构进行了分析,并详细分析了平流层空气深入侵过程和路径.AIRS臭氧资料与臭氧探空资料分析表明,在COL... 详细信息

利用ERA-Interim再分析资料、卫星资料以及轨迹模式,对2010年6月19-23日东亚夏季一次典型切断低压（COL）过程中的动力、热力及化学结构进行了分析,并详细分析了平流层空气深入侵过程和路径.AIRS臭氧资料与臭氧探空资料分析表明,在COL发展成熟阶段,由极区高位势涡度、高臭氧库区脱离出来的空气在COL的中心形成一个局地高位势涡度与高臭氧浓度区域,并在对流层中上部出现臭氧次峰结构.前向轨迹模式模拟结果表明：COL形成前期,高空槽加深,槽后偏北风急流可以引起极区下平流层空气向中纬度对流层中低层侵入,从而使对流层中低层臭氧浓度升高;COL发展成熟阶段,可以引起平流层空气的＂旋转式＂入侵.最后,应用后向轨迹模式对成熟阶段COL内部及周围空气块源地做进一步模拟分析.结果表明：（1）COL中心高浓度臭氧空气块源地有两个,一是中西伯利亚北部上空的副极地涡旋,这部分气块对COL中心的高臭氧浓度起主要作用;二是90°E以西,50°N附近的温带急流轴左侧的气旋式风速切变区.（2）COL周围低臭氧浓度的气块源地也有两个,一是COL底部臭氧浓度相对较低的空气块主要来自急流轴右侧反气旋式风速切变区,以平流运动为主;二是COL前部及后部的空气块主要来自COL南侧低层暖区,以上升运动为主.

关键词：切断低压平流层-对流层交换平流层侵入

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