Hexacoordinated Sn( IV ) porphyrin‐based square‐grid frameworks exhibiting selective uptake of CO 2 over N 2

Author(s):  
Nirmal K. Shee ◽  
Chang‐Ju Lee ◽  
Hee‐Joon Kim
Keyword(s):  
1998 ◽  
Vol 39 (12) ◽  
pp. 2436-2442 ◽  
Author(s):  
Marcelo J.A. Amar ◽  
Klaus A. Dugi ◽  
Changting C. Haudenschild ◽  
Robert D. Shamburek ◽  
Bernhard Foger ◽  
...  

2001 ◽  
Vol 38 (10) ◽  
pp. 872-878 ◽  
Author(s):  
Hitoshi MIMURA ◽  
Mikio SAITO ◽  
Kenichi AKIBA ◽  
Yoshio ONODERA

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Michael Joon Seng Goh ◽  
Yeong Shiong Chiew ◽  
Ji Jinn Foo

AbstractA net immersed in fractal-induced turbulence exhibit a transient time-varying deformation. The anisotropic, inhomogeneous square fractal grid (SFG) generated flow interacts with the flexible net to manifest as visible cross-sectional undulations. We hypothesize that the net’s response may provide a surrogate in expressing local turbulent strength. This is analysed as root-mean-squared velocity fluctuations in the net, displaying intensity patterns dependent on the grid conformation and grid-net separation. The net’s fluctuation strength is found to increase closer to the turbulator with higher thickness ratio while presenting stronger fluctuations compared to regular-square-grid (RSG) of equivalent blockage-ratio, σ. Our findings demonstrate a novel application where 3D-reconstruction of submerged nets is used to experimentally contrast the turbulence generated by RSG and multilength scale SFGs across the channel cross-section. The net’s response shows the unique turbulence developed from SFGs can induce 9 × higher average excitation to a net when compared against RSG of similar σ.


2021 ◽  
Vol 50 (7) ◽  
pp. 2387-2392
Author(s):  
Zhi-Qiang Dong ◽  
Jian-Hui Yang ◽  
Bin Liu

The structural, spectroscopic and magnetic properties of chromous carbonates with a square-grid layer structure constructed from Cr2(CO3)44− paddlewheel units.


Author(s):  
VIERA ČERŇANOVÁ

Abstract Applying circle inversion on a square grid filled with circles, we obtain a configuration that we call a fabric of kissing circles. We focus on the curvature inside the individual components of the fabric, which are two orthogonal frames and two orthogonal families of chains. We show that the curvatures of the frame circles form a doubly infinite arithmetic sequence (bi-sequence), whereas the curvatures in each chain are arranged in a quadratic bi-sequence. We also prove a sufficient condition for the fabric to be integral.


2019 ◽  
Vol 25 (20) ◽  
pp. 5222-5234 ◽  
Author(s):  
Christopher J. Kingsbury ◽  
Brendan F. Abrahams ◽  
Josie E. Auckett ◽  
Hubert Chevreau ◽  
A. David Dharma ◽  
...  
Keyword(s):  

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