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. Through a preliminary study on the growth mechanism of the product, it is found that the generation of the plate-like Mg5(CO3)4(OH)2.4H2O could be explained by two-dimensional nucleation/step growth mechanism. Key words: plate-like; basic magnesium carbonate; template-mediated/homogeneous precipitation; two-dimensional nucleation; step growth Cite this article as: CHEN Juan, HUANG Zhi-liang, CHEN......
One Step Synthesis and Growth Mechanism of Carbon NanotubesAkshay Kumar1,2,K.Singh2,O.P.Pandey22. School of Physics and Materials Science,Thapar University摘 要:A simple one step,reproducible,synthesis route for carbon nanotubes was proposed.No external catalyst was used for the synthesis.These nanotubes were obtained after decomposition of acetone at 650......
J. Cent. South Univ. (2017) 24: 900-911 DOI: 10.1007/s11771-017-3492-y Noise cancellation of a multi-reference full-wave magnetic resonance sounding signal based on a modified sigmoid variable step... of this system with theoretical calculation and experiments was analyzed and a modified sigmoid variable step size least mean square (SVSLMS) algorithm for noise cancellation was presented......
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关于STEP中性文件数据结构的研究及实现董晓岚,黄筱调摘 要:STEP中性文件作为STEP标准最为广泛的应用,成为当下主流CAD/CAM系统无一不支持的输入输出中性格式,无论是实现CAX系统间的数据集成,还是二次开发都需要解读STEP中性文件的信息模型.这里就此给出简要阐述,并介绍了STEP中性文件前后处理器的实现方法.关键词:STEP中性文件;信息模型;前后处理器;......
XML在基于STEP的公差模型表达中的应用李登万四川工程职业技术学院 德阳618000摘 要:利用XML实现产品数据的网络化应用,是基于STEP标准的产品数据的XML表达.探讨基于STEP标准的公差模型表达方法,提出一种公差模型的数据结构,用数据化描述语言EXPRESS来定义数据结构,将STEP文件转换为相应的XML中性文件,建立XMLSchema库,以实现网络环境下的数据共享.关键词:STEP标准;公差模型;EXPRESS;网络化制造;......
Phase-field simulation of dendritic growth for binary alloys with complicate solution models LI Xin-zhong(李新中), GUO Jing-jie(郭景杰), SU Yan-qing(苏彦庆), WU Shi-ping(吴士平), FU Heng-zhi(傅恒志) (School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 15001, China) Abstract: A phase-field method for simulation of dendritic growth in binary alloys with complicate solution......
biological growth; control points; step factor; optimization rate...Convergence of shape optimization calculations of mechanical components using adaptive biological growth and iterative finite element methodsMohammad Zehsaz, Kaveh E. Torkanpouri, Amin Paykani......
control; preferential adsorption; TiB2 morphology; 2D-nucleation; growth step 1 Introduction Aluminum and aluminum alloys are widely used in the aeronautical and automobile industries due to their low... of the chamfered surface. Finally, the TiB2 exhibited chamfered hexagonal morphology with obvious growth steps. Moreover, the growth step determined by the preferential adsorption in the c-axis was more......
Morphology control of ultrafine cuprous oxide powder and its growth mechanism CAO Yan(曹 艳), WANG Yue-jun(王岳俊), ZHOU Kang-gen(周康根), BI Zhen(毕 贞) School of Metallurgical Science... control was discussed on the basic theory of crystal nucleation and growth. It is found that the Cu+ supersaturation is remarkably influenced by the precursor kind, reaction temperature and glucose......