نتایج جستجو برای: thick hollow sphere

تعداد نتایج: 93335  

2003
Taerim Lee

Recent progress in both diagnostic and therapeutic technique of hepatocellular carcinoma appears to improve the prognosis. The purpose of this study was designed to evaluate the prognosis of HCC in relation to treatment methods and their affecting factors by the treestructured model. This paper attempt to identify and quantify the effect of prognostic factors namely, patient characteristics tha...

Journal: :The Journal of the Acoustical Society of America 1967

2005
Thomas C. Grenfell Steven P. Neshyba Stephen G. Warren

[1] The ability of an assembly of spheres to represent scattering and absorption by a nonspherical ice crystal of the same volume-to-area (V/A) ratio was previously evaluated for convex shapes (circular cylinders and hexagonal prisms). Here we extend the comparison to indented and hollow prisms, which are common in ice clouds. In the equivalent-sphere representation, the crystal mass and surfac...

Journal: :Optics express 2013
Fan Yang Wei Jin Hoi Lut Ho Fuyin Wang Wen Liu Lina Ma Yongming Hu

The acoustic pressure sensitivities of hollow-core photonic bandgap fibers (HC-PBFs) with different thicknesses of silica outer-cladding and polymer jacket were experimentally investigated. Experiment with a HC-PBF with 7 μm-thick silica outer cladding and 100 μm-thick Parylene C jacket demonstrated a pressure sensitivity 10 dB higher than the commercial HC-1550-02 fiber and 25 dB higher than a...

2014
Bum-Yean Cho Hyung-Jun Kim Kyung-Hoon Park Heung-Youl Kim

This study evaluates the fire resistance performance (1–2h) of a reinforced concrete (RC) structure-void slab using a lightweight hollow sphere, which can reduce the unnecessary dynamic of removing the central concrete. For this experiment, we set up the depth of the concrete cover, live load, and span length as the factors. The result comes out with 50 mm cover depth of the RC structure hollow...

A.H Mohazzab M Jabbari S.M.R Khalili,

This paper presents the effect of centrifugal load in functionally graded (FG) hollow sphere subjected to uniform magnetic field. Analytical solution for stresses and perturbation of the magnetic field vector are determined using the direct method and the power series method. The material stiffness, the magnetic permeability and the density vary continuously across the thickness direction accor...

2015
Jianfeng Mao Chao Luo Tao Gao Xiulin Fan Chunsheng Wang

Na3V2(PO4)3 (NVP) has been considered as a very promising cathodematerial for sodium-ion batteries (SIBs) due to its typical NASICON structure, which provides an open and three dimensional (3D) framework for Na migration. However, the low electronic conductivity of NVP limits its rate capability and cycling ability. In this study, carbon coated hollow structured NVP/C composites are synthesized...

Journal: :Journal of Applied Physics 2021

We produce hollow sphere liquid crystal elastomer (LCE) actuators from a nematic precursor mixture, brought into the shape of self-closing shell with tangential anchoring director field n(r), using solvent-assisted microfluidic technique. By separating production polymerization and cross-linking, is allowed to approach its equilibrium n(r) configuration in shell, spontaneously forming topologic...

2012
Guotao Duan Fuhai Su Wen Xu Cunlin Zhang Weiping Cai

Terahertz (THz) time-domain spectroscopy is carried out for micro/nanostructured periodic Au/dielectric sphere arrays on Si substrate. We find that the metal-insulator transition can be achieved in THz bandwidth via varying sample parameters such as the thickness of the Au shell and the diameter of the Au/dielectric sphere. The Au/polystyrene sphere arrays do not show metallic THz response when...

2017
Yi-Wei Sun Li-Hong Wang Da-Li Meng Xin Che

This study described a valuable drug delivery system for poorly water-soluble anticancer naturalproduct, licochalcone A, isolated from Glycyrrhiza inflata, loaded on hollow gold nanoparticles by green method to improve solubility and dissolution and maintain its natural pharmacological property. Briefly, the formation of hollow gold nanoparticles involves three steps: preparing of silica nanosp...

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