Inorganic-Organic Hybrid Gel: Structural Characteristics and Formation Mechanism

Author(s):  
Hiroshi Urakawa ◽  
Yoshiaki Yuguchi ◽  
Yuko Ikeda ◽  
Kanji Kajiwara ◽  
Yoshitaka Hirata ◽  
...  
CrystEngComm ◽  
2013 ◽  
Vol 15 (5) ◽  
pp. 1007-1014 ◽  
Author(s):  
Qianqian Shen ◽  
Jinbo Xue ◽  
Jian Liu ◽  
Husheng Jia ◽  
Xuguang Liu ◽  
...  

2009 ◽  
Vol 83 (1) ◽  
pp. 81-91 ◽  
Author(s):  
Huaming XU ◽  
Shu LIU ◽  
Guosheng QU ◽  
Yanfeng LI ◽  
Gang SUN ◽  
...  

2021 ◽  
Vol 2 (2) ◽  
Author(s):  
Chunxiao Xue ◽  
Kaichong Li ◽  
Lingwei Kong

China is the country with the longest mileage in the construction of sandstorms in the world. The railway system is often affected by wind sand flow, which seriously affects the operation safety of trains. Firstly, this article introduces the formation mechanism, movement state, monitoring method and structural characteristics of the wind-sand flow. Then the sand hazard formation mechanism of railway embankments, cuts, bridges and culverts is explained based on aerodynamic performance. Moreover, the sand prevention measures are classified, and the advantages and disadvantages of various measures are discussed. Finally, two kinds of sand prevention and control systems are proposed in combination with the topography and regional wind-sand flow characteristics, and the problems that need to be solved urgently in the prevention and treatment of railway sand and sand disasters in the future are prospected.


2016 ◽  
Vol 861 ◽  
pp. 90-96 ◽  
Author(s):  
Da Xiao Gao ◽  
Qi Liu ◽  
Bin Zhang ◽  
Cheng Xing Xiao ◽  
Cheng Zu Ren

The characteristics, structural characteristics and composition of the grinding wheel oxide film is revealed by the theoretical analysis and simulating test in pre-dressing process of the ELID ultra precision mirror grinding, and the validity of oxide film formation mechanism analysis is verified by ELID experiments. Mirror grinding of hard brittle materials can be realized by on-line real-time control of the thickness of the oxide film.


2008 ◽  
Vol 01 (03) ◽  
pp. 239-246 ◽  
Author(s):  
YINGCHUN ZHU

Titanium oxide nanotube is a promising material for versatile applications. However, its structure and formation mechanism were quite confusedly reported. Therefore, it is essential to fully understand its structure, formation mechanism and stability. In this study, the structure, formation and stability of titanium oxide nanotube were studied in detail. New experimental findings on the morphology of titanium oxide nanotubes were reported, demonstrating close-opened nanotubes, cone-shaped nanotubes, twin and ternary nanotubes etc. A structural model of the titanium oxide nanotubes is proposed on the basis of cylinders of smoothly curved sheets of TiO 6 octahedra, among which H + and H 3 O + are intercalated. The formation mechanism of titanium oxide nanotubes was deduced and discussed on the basis of their structural characteristics and chemical bonding behaviors of constituent atoms. The stability of the nanotubes was also studied under different conditions.


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