ZIB

Hits per page

hits 1 - 2 | 2 hits

Sorting

Electronic Resource

Kinetic roughening and smoothing of the crystalline–amorphous interface during solid phase epitaxial crystallization of GeSi alloy layers (1996)

Elliman, R. G. ; Wong, W. C.

Woodbury, NY : American Institute of Physics (AIP)

Applied Physics Letters 69 (1996), S. 2677-2679

add to mindlist on the mindlist

Details

ISSN: 1077-3118

Source: AIP Digital Archive

Topics: Physics

Notes: The morphology of the crystalline–amorphous interface is studied during solid-phase epitaxial crystallization of amorphous GeSi alloy layers with depth-dependent Ge distributions. The interface is shown to undergo an initial strain-induced roughening transition when the Ge concentration exceeds 6.6 at. %. As crystallization continues in strain-relaxed material the interface is shown to further roughen or smooth in response to changes in the Ge distribution. This evolution of the interface morphology is shown to be a consequence of kinetic effects whereby the differential velocity between the leading and trailing edges of the rough interface increases in regions of increasing Ge concentration and decreases in regions of decreasing Ge concentration. © 1996 American Institute of Physics.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1063/1.117675

Permalink

Library	Location	Call Number	Volume/Issue/Year	Availability

Others were also interested in ...

Paper (German National Licenses)

Fulltext

Electronic Resource

Ultrastructural localization of NADPH-diaphorase activity in the submucous ganglia of the guinea-pig intestine after vagotomy (1996)

Wang, X. Y. ; Wong, W. C. ; Ling, E. A.

Springer

Anatomy and embryology 193 (1996), S. 611-617

add to mindlist on the mindlist

Details

ISSN: 1432-0568

Keywords: Guinea-pig ; Intestine ; Submucous ganglia ; NADPH-diaphorase ; Vagotomy

Source: Springer Online Journal Archives 1860-2000

Topics: Medicine

Notes: Abstract The reduced nicotinamide adenine dinucleotide phosphate diaphorase (NADPH-d) activity in the axon terminals presynaptic to the submucous neurons of guinea-pig intestine following unilateral cervical vagotomy was studied by electron microscopy. The reaction product of diaphorase was localized only in the axon terminals that contained predominantly small agranular vesicles, and it was usually deposited around the vesicles. The terminals that contained predominantly large granular or flattened vesicles did not display any signs of diaphorase reactivity. Although there were only few diaphorase-positive submucous neurons in the small intestine, a considerable number of diaphorase-positive axon terminals was observed in the submucous ganglia of the small intestine in the control animals. Ten days after vagotomy, the quantitative study showed that when compared with the control animals, the number of diaphorase-positive terminals in the submucous ganglia of duodenum, mid-small intestine and colon in the vagotomized animals was reduced (P〈0.05). When the NADPHd-positive terminals were examined in closer detail, it was found that only a small proportion of them showed signs of degeneration as evidenced by the swelling and vacuolation of their contents of mitochondria, with disrupted cristae and clumping of synaptic vesicles. It was therefore concluded that at least some of the diaphorasepositive axon terminals in the submucous ganglia of guinea-pig intestine originated from the vagus nerve.