scholarly journals Fundamental insight into anionic aqueous polyurethane dispersions

2020 ◽  
Vol 3 (3) ◽  
pp. 102-110
Author(s):  
Harsh Pandya ◽  
Prakash Mahanwar
Keyword(s):  
Fundamental Insight ◽  
Polyurethane Dispersions ◽  
Insight Into ◽  
Aqueous Polyurethane Dispersions

scholarly journals Nonreciprocal charge transport up to room temperature in bulk Rashba semiconductor α-GeTe

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Yan Li ◽  
Yang Li ◽  
Peng Li ◽  
Bin Fang ◽  
Xu Yang ◽  
...  
Keyword(s):  
Charge Transport ◽  
Room Temperature ◽  
Theoretical Calculations ◽  
Ferromagnetic Layer ◽  
Spin Splitting ◽  
New Paradigm ◽  
Rashba Spin ◽  
Rashba Spin Splitting ◽  
Fundamental Insight ◽  
Insight Into

AbstractNonmagnetic Rashba systems with broken inversion symmetry are expected to exhibit nonreciprocal charge transport, a new paradigm of unidirectional magnetoresistance in the absence of ferromagnetic layer. So far, most work on nonreciprocal transport has been solely limited to cryogenic temperatures, which is a major obstacle for exploiting the room-temperature two-terminal devices based on such a nonreciprocal response. Here, we report a nonreciprocal charge transport behavior up to room temperature in semiconductor α-GeTe with coexisting the surface and bulk Rashba states. The combination of the band structure measurements and theoretical calculations strongly suggest that the nonreciprocal response is ascribed to the giant bulk Rashba spin splitting rather than the surface Rashba states. Remarkably, we find that the magnitude of the nonreciprocal response shows an unexpected non-monotonical dependence on temperature. The extended theoretical model based on the second-order spin–orbit coupled magnetotransport enables us to establish the correlation between the nonlinear magnetoresistance and the spin textures in the Rashba system. Our findings offer significant fundamental insight into the physics underlying the nonreciprocity and may pave a route for future rectification devices.

scholarly journals Temporal hierarchy of intrinsic neural timescales converges with spatial core-periphery organization

2021 ◽  
Vol 4 (1) ◽  
Author(s):  
Mehrshad Golesorkhi ◽  
Javier Gomez-Pilar ◽  
Shankar Tumati ◽  
Maia Fraser ◽  
Georg Northoff
Keyword(s):  
Time Window ◽  
Human Cortex ◽  
The Core ◽  
Novel Variant ◽  
Open Issue ◽  
Task Differences ◽  
Spatial Hierarchy ◽  
Fundamental Insight ◽  
Insight Into ◽  
And Task

AbstractThe human cortex exhibits intrinsic neural timescales that shape a temporal hierarchy. Whether this temporal hierarchy follows the spatial hierarchy of its topography, namely the core-periphery organization, remains an open issue. Using magnetoencephalography data, we investigate intrinsic neural timescales during rest and task states; we measure the autocorrelation window in short (ACW-50) and, introducing a novel variant, long (ACW-0) windows. We demonstrate longer ACW-50 and ACW-0 in networks located at the core compared to those at the periphery with rest and task states showing a high ACW correlation. Calculating rest-task differences, i.e., subtracting the shared core-periphery organization, reveals task-specific ACW changes in distinct networks. Finally, employing kernel density estimation, machine learning, and simulation, we demonstrate that ACW-0 exhibits better prediction in classifying a region’s time window as core or periphery. Overall, our findings provide fundamental insight into how the human cortex’s temporal hierarchy converges with its spatial core-periphery hierarchy.

scholarly journals Effect of ionic strength on shear-thinning nanoclay–polymer composite hydrogels

2018 ◽  
Vol 6 (8) ◽  
pp. 2073-2083 ◽  
Author(s):  
Amir Sheikhi ◽  
Samson Afewerki ◽  
Rahmi Oklu ◽  
Akhilesh K. Gaharwar ◽  
Ali Khademhosseini
Keyword(s):  
Ionic Strength ◽  
Rheological Properties ◽  
Polymer Composite ◽  
Biomedical Applications ◽  
Shear Thinning ◽  
Composite Hydrogels ◽  
Polymer Interactions ◽  
Fundamental Insight ◽  
Insight Into

The effect of ionic strength on the structure and rheological properties of nanoclay–gelatin shear-thinning biomaterials (STBs) is investigated. A fundamental insight into nanoclay–polymer interactions in physiological environments is provided to design clay-based biomaterials for biomedical applications.

scholarly journals Comparison of Molecular Recognition of Trimethyllysine and Trimethylthialysine by Epigenetic Reader Proteins

Molecules ◽  
2020 ◽  
Vol 25 (8) ◽  
pp. 1918 ◽  
Author(s):  
Jordi C. J. Hintzen ◽  
Jordi Poater ◽  
Kiran Kumar ◽  
Abbas H. K. Al Temimi ◽  
Bas J. G. E. Pieters ◽  
...  
Keyword(s):  
Molecular Recognition ◽  
Biomolecular Recognition ◽  
Crucial Importance ◽  
Binding Characteristics ◽  
Human Genes ◽  
Health And Disease ◽  
Fundamental Insight ◽  
Dynamics Simulations ◽  
Insight Into ◽  
Epigenetic Processes

Gaining a fundamental insight into the biomolecular recognition of posttranslationally modified histones by epigenetic reader proteins is of crucial importance to understanding the regulation of the activity of human genes. Here, we seek to establish whether trimethylthialysine, a simple trimethyllysine analogue generated through cysteine alkylation, is a good trimethyllysine mimic for studies on molecular recognition by reader proteins. Histone peptides bearing trimethylthialysine and trimethyllysine were examined for binding with five human reader proteins employing a combination of thermodynamic analyses, molecular dynamics simulations and quantum chemical analyses. Collectively, our experimental and computational findings reveal that trimethylthialysine and trimethyllysine exhibit very similar binding characteristics for the association with human reader proteins, thereby justifying the use of trimethylthialysine for studies aimed at dissecting the origin of biomolecular recognition in epigenetic processes that play important roles in human health and disease.

Aqueous polyurethane dispersions derived from polycarbonatediols and Di(4-isocyanatocyclohexyl)methane

2006 ◽  
Vol 46 (5) ◽  
pp. 588-593 ◽  
Author(s):  
Da-Kong Lee ◽  
Hong-Bing Tsai ◽  
Ruey-Shi Tsai
Keyword(s):  
Polyurethane Dispersions ◽  
Aqueous Polyurethane Dispersions

The properties of aqueous polyurethane dispersions and the formation of surface coatings based on them

1973 ◽  
Vol 15 (1) ◽  
pp. 221-228
Author(s):  
L.A. Sukhareva ◽  
M.R. Kiselev ◽  
P.I. Zubov ◽  
Ye.V. Safronova ◽  
B.L. Khavkina ◽  
...  
Keyword(s):  
Surface Coatings ◽  
Polyurethane Dispersions ◽  
Aqueous Polyurethane Dispersions
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