3% Ti‐Tungsten Diffusion Barriers: I . A Discussion of the Role of the A15 Structure

1994 ◽  
Vol 141 (7) ◽  
pp. 1867-1871 ◽  
Author(s):  
David R. Evans ◽  
David M. Leet
Keyword(s):  
Diffusion Barriers

scholarly journals Trafficking to the primary cilium membrane

2017 ◽  
Vol 28 (2) ◽  
pp. 233-239 ◽  
Author(s):  
Saikat Mukhopadhyay ◽  
Hemant B. Badgandi ◽  
Sun-hee Hwang ◽  
Bandarigoda Somatilaka ◽  
Issei S. Shimada ◽  
...  
Keyword(s):  
Membrane Proteins ◽  
Signaling Pathways ◽  
Primary Cilium ◽  
Hedgehog Signaling ◽  
Diffusion Barriers ◽  
Disease Pathogenesis ◽  
Ciliary Membrane ◽  
Multiple Organs ◽  
Sensory Reception

The primary cilium has been found to be associated with a number of cellular signaling pathways, such as vertebrate hedgehog signaling, and implicated in the pathogenesis of diseases affecting multiple organs, including the neural tube, kidney, and brain. The primary cilium is the site where a subset of the cell's membrane proteins is enriched. However, pathways that target and concentrate membrane proteins in cilia are not well understood. Processes determining the level of proteins in the ciliary membrane include entry into the compartment, removal, and retention by diffusion barriers such as the transition zone. Proteins that are concentrated in the ciliary membrane are also localized to other cellular sites. Thus it is critical to determine the particular role for ciliary compartmentalization in sensory reception and signaling pathways. Here we provide a brief overview of our current understanding of compartmentalization of proteins in the ciliary membrane and the dynamics of trafficking into and out of the cilium. We also discuss major unanswered questions regarding the role that defects in ciliary compartmentalization might play in disease pathogenesis. Understanding the trafficking mechanisms that underlie the role of ciliary compartmentalization in signaling might provide unique approaches for intervention in progressive ciliopathies.

scholarly journals Understanding the Role of Internal Diffusion Barriers in Pt/Beta Zeolite Catalyzed Isomerization of n ‐Heptane

2019 ◽  
Vol 132 (4) ◽  
pp. 1564-1567 ◽  
Author(s):  
Zhongyuan Guo ◽  
Xin Li ◽  
Shen Hu ◽  
Guanghua Ye ◽  
Xinggui Zhou ◽  
...  
Keyword(s):  
Diffusion Barriers ◽  
Internal Diffusion ◽  
Beta Zeolite

Role of Confinement on Diffusion Barriers in Semiconductor Nanocrystals

2009 ◽  
Vol 102 (2) ◽  
Author(s):  
Tzu-Liang Chan ◽  
Alexey T. Zayak ◽  
Gustavo M. Dalpian ◽  
James R. Chelikowsky
Keyword(s):  
Semiconductor Nanocrystals ◽  
Diffusion Barriers

scholarly journals Understanding the Role of Internal Diffusion Barriers in Pt/Beta Zeolite Catalyzed Isomerization of n ‐Heptane

2019 ◽  
Vol 59 (4) ◽  
pp. 1548-1551 ◽  
Author(s):  
Zhongyuan Guo ◽  
Xin Li ◽  
Shen Hu ◽  
Guanghua Ye ◽  
Xinggui Zhou ◽  
...  
Keyword(s):  
Diffusion Barriers ◽  
Internal Diffusion ◽  
Beta Zeolite

Mechanisms of Cu Columns Growth

2004 ◽  
Vol 849 ◽  
Author(s):  
Jian Wang ◽  
Hanchen Huang
Keyword(s):  
Molecular Dynamics ◽  
Diffusion Barriers ◽  
Face Centered Cubic ◽  
Sputtering Deposition ◽  
Cubic Metals ◽  
Face Centered ◽  
Dynamics Simulations ◽  
Zigzag Shape ◽  
Formation Energies

ABSTRACTThe Cu <111> columns, which are formed during magnetron sputtering deposition, are faceted on the top and zigzag on sides. Our numerical results of large facet-facet diffusion barriers offer an explanation of the facet dimension. Based on the stacking fault formation energies of various face-centered-cubic metals, we suggest that the zigzag shape of Cu <111> columns is a result of deposition twins. Our molecular dynamics simulations indeed confirm this suggestion. Further, the dynamics simulations reveal the transient role of {100} facets, which facilitate the formation of {111} facets and disappear afterwards.

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