PbTe/Pb quasi-one-dimensional nanostructure material: controllable array synthesis and side branch formation by electrochemical deposition

2010 ◽  
Vol 21 (18) ◽  
pp. 185302 ◽  
Author(s):  
Zhaocun Zong ◽  
Jinying Liu ◽  
Tingting Hu ◽  
Dongdonng Li ◽  
Huifang Tian ◽  
...  
Nanoscale ◽  
2012 ◽  
Vol 4 (5) ◽  
pp. 1565 ◽  
Author(s):  
Ri Qiu ◽  
Jin You Zheng ◽  
Hyun Gil Cha ◽  
Myung Hwa Jung ◽  
Kyu Joon Lee ◽  
...  

Author(s):  
D. H. Male ◽  
R. A. Chelsom ◽  
B. E. L. Deckker

The results of an investigation into the behaviour of rarefaction waves at a junction formed by the intersection of two ducts are presented. Pressure measurements have been made in junctions in which the side branch forms an angle of 45°, 90°, and 135° with the main branch. In the 90° junction the effect of the area of the side branch to that of the main branch is examined; the values of the ratios being 1·0, 0·5, and 0·25. The amplitude of the incident rarefaction waves varies from 3 to 20 inHg. The development of the quasi-steady flow pattern has been obtained by Schlieren photography. This information, together with the pressure measurements, has been used to develop a quasi-steady, one-dimensional, semi-empirical analysis of the flow. The results of this analysis are in good agreement with the pressure measurements and can be used as boundary conditions for the examination of pipe networks by the method of characteristics.


2008 ◽  
Vol 19 (10) ◽  
pp. 105305 ◽  
Author(s):  
S H Hong ◽  
M G Kang ◽  
H-Y Cha ◽  
M H Son ◽  
J S Hwang ◽  
...  

1991 ◽  
Vol 331 (1261) ◽  
pp. 303-306 ◽  

Four distinct phases can be distinguished in the regenerative response of a lesioned CNS axon: sprouting of the proximal axon stump, elongation, target recognition, and formation of appropriate synapses. These processes can be observed in such a way only in lower vertebrates, in particular, in the optic system. In these species and systems, both, the guidance mechanisms leading regenerating fibres to their former target areas, and the mechanisms responsible for specific synapse formation are retained throughout life. As during development, guidance crucially depends on the presence of favourable substrate molecules, and on chemotropic signals (Dodd & Jessel 1989; Tessier-Lavigne et al .1988; Harris 1989). The cell biological mechanisms responsible for target recognition including the arrest of long-distance growth, the initiation of side branch formation and terminal arborization, and the selection of specific post-synaptic partners (cell type; soma, proximal or distal dendrite, spines, axons) remain unknown up to now.


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