نتایج جستجو برای: heterogeneous material

تعداد نتایج: 485512  

This research describes application of a mesoporous nanostructured material based on basic ionic liquid anchored to silica, i.e. nano-2-(dimethylamino)-N-(silica-n-propyl)-N,N-dimethylethanaminium chloride {nano-[DMSPDE][Cl]}, as a highly effective and heterogeneous nanocatalyst for the production of 2-amino-4H-chromenes. The one-pot multi-component ...

2016
Na Li Jiaquan Yang Chunmei Feng Jianfei Yang Liya Zhu Aiqing Guo

An integrate fabrication framework is presented to build heterogeneous objects (HEO) using digital microdroplets injecting technology and rapid prototyping. The heterogeneous materials part design and manufacturing method in structure and material was used to change the traditional process. The net node method was used for digital modeling that can configure multimaterials in time. The relation...

1999
Ralph Menikoff

Yet for numerical simulations of detonation waves in plastic binded explosives (PBX) empirical pressure dependent reaction rates, such as ``Forest fire'' or the ``Ignition and Growth'' model, are typically used. The underlying reason for this disparity between between fundamental chemical rate laws and empirical burn models is due to the fact that a PBX is a heterogeneous material consisting of...

Journal: :Journal of Bionic Engineering 2021

Abstract The fabrication of multi-material medical phantoms with both patient-specificity and realistic mechanical properties is great importance for the development surgical planning training. In this work, a 3D printing system phantom manufacturing was developed. Rigid elastomeric materials are firstly combined in such application an accurate tactile feedback. designed multiple layers, where ...

Journal: :Journal of biomedical optics 2012
Chao Huang Liming Nie Robert W Schoonover Lihong V Wang Mark A Anastasio

We report an investigation of image reconstruction in photoacoustic tomography for objects that possess heterogeneous material and acoustic attenuation distributions. When the object contains materials, such as bone and soft-tissue, that are modeled using power law attenuation models with distinct exponents, we demonstrate that the effects of acoustic attenuation due to the most strongly attenu...

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