Robust Sclera Recognition Based on a Local Spherical Structure

2021 ◽  
pp. 116081
Author(s):  
Sanghak Lee ◽  
Cheng Yaw Low ◽  
Jaihie Kim ◽  
Andrew Beng Jin Teoh
Keyword(s):  
Spherical Structure ◽  
Sclera Recognition

Electron-diffraction studies of amorphous carbon thin films

1993 ◽  
Vol 51 ◽  
pp. 1100-1101
Author(s):  
David A. Muller
Keyword(s):  
Thin Films ◽  
Electron Diffraction ◽  
Amorphous Carbon ◽  
Glassy Carbon ◽  
Spherical Structure ◽  
Local Ordering ◽  
Carbon Arc ◽  
Similar Appearance ◽  
Carbon Thin Films ◽  
Large Spherical

The sp2 rich amorphous carbons have a wide variety of microstructures ranging from flat sheetlike structures such as glassy carbon to highly curved materials having similar local ordering to the fullerenes. These differences are most apparent in the region of the graphite (0002) reflection of the energy filtered diffracted intensity obtained from these materials (Fig. 1). All these materials consist mainly of threefold coordinated atoms. This accounts for their similar appearance above 0.8 Å-1. The fullerene curves (b,c) show a string of peaks at distance scales corresponding to the packing of the large spherical and oblate molecules. The beam damaged C60 (c) shows an evolution to the sp2 amorphous carbons as the spherical structure is destroyed although the (220) reflection in fee fcc at 0.2 Å-1 does not disappear completely. This 0.2 Å-1 peak is present in the 1960 data of Kakinoki et. al. who grew films in a carbon arc under conditions similar to those needed to form fullerene rich soots.

Integrated Approach for Sclera Recognition and Eye Gaze Detection

2018 ◽  
Vol 6 (7) ◽  
pp. 77
Author(s):  
Snehal S. Rajole ◽  
J. V. Shinde
Keyword(s):  
Near Infrared ◽  
Eye Gaze ◽  
Integrated Approach ◽  
Error Rates ◽  
Infrared Images ◽  
Scaling Method ◽  
Extensive Simulation ◽  
Sclera Recognition ◽  
Gaze Detection ◽  
Biometric Trait

In this paper we proposed unique technique which is adaptive to noisy images for eye gaze detection as processing noisy sclera images captured at-a-distance and on-the-move has not been extensively investigated. Sclera blood vessels have been investigated recently as an efficient biometric trait. Capturing part of the eye with a normal camera using visible-wavelength images rather than near infrared images has provoked research interest. This technique involves sclera template rotation alignment and a distance scaling method to minimize the error rates when noisy eye images are captured at-a-distance and on-the move. The proposed system is tested and results are generated by extensive simulation in java.

Synergistic effect of phosphomolybdic acid on rhodium-based metal-organic frameworks for the efficient selective photocatalytic reduction of CO2 to CO

2021 ◽  
Author(s):  
Yurong Shan ◽  
Dexiang Liu ◽  
Chunyan Xu ◽  
Peng Zhan ◽  
Hui Wang ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Electronic Structure ◽  
Synergistic Effect ◽  
Metal Organic Frameworks ◽  
Phosphomolybdic Acid ◽  
Photocatalytic Reduction ◽  
Structure And Morphology ◽  
Spherical Structure ◽  
Metal Organic ◽  
Reduction Of Co2

In this work, PMA@NH2-MIL-68(Rh) with a mangosteen spherical structure was successfully synthesized by a hydrothermal method for the photocatalytic reduction of carbon dioxide. The electronic structure and morphology of the...

scholarly journals Probing non-spherical dark halos in the Galactic dwarf satellites

2013 ◽  
Vol 9 (S298) ◽  
pp. 411-411
Author(s):  
Kohei Hayashi ◽  
Masashi Chiba
Keyword(s):  
Dark Matter ◽  
Cold Dark Matter ◽  
Milky Way ◽  
Velocity Dispersion ◽  
Line Of Sight ◽  
Spherical Structure ◽  
Spherical Models ◽  
Galactic Satellites ◽  
Best Fitting

AbstractWe construct axisymmetric mass models for dwarf spheroidal (dSph) galaxies in the Milky Way to obtain realistic limits on the non-spherical structure of their dark halos. This is motivated by the fact that the observed luminous parts of the dSphs are actually non-spherical and cold dark matter models predict non-spherical virialized dark halos on sub-galactic scales. Applying these models to line-of-sight velocity dispersion profiles along three position angles in six Galactic satellites, we find that the best fitting cases for most of the dSphs yield not spherical but oblate and flattened dark halos. We also find that the mass of the dSphs enclosed within inner 300 pc varies depending on their total luminosities, contrary to the conclusion of previous spherical models. This suggests the importance of considering non-spherical shapes of dark halos in dSph mass models.

scholarly journals A Broadband Conformal Phased Array Antenna on Spherical Surface

2014 ◽  
Vol 2014 ◽  
pp. 1-5 ◽  
Author(s):  
Dan Sun ◽  
Rong Shen ◽  
Xuequan Yan
Keyword(s):  
Phased Array ◽  
Spherical Surface ◽  
Ground Plane ◽  
Array Antenna ◽  
Phased Array Antenna ◽  
Simulated Model ◽  
Conformal Array ◽  
Spherical Structure ◽  
Matching Performance ◽  
Ku Band

A Ku-band wideband conformal array antenna with13×19elements is presented in the paper. The array has a spherical structure, and its element is a proximity-coupled stacked patches antenna with a cavity-backed ground plane. The stacked patches and the cavity produce multiple coupled resonances, which enhance the bandwidth of the element extremely. A simulated model with the reasonable dimensions is framed with the coupling analyses, and the effective simulated results and good computing efficiency are obtained simultaneously. The measured results of the center embedded element in the whole array show a bandwidth exceeding 40%VSWR<2, which is close to the simulated matching performance.

scholarly journals Cryo-EM structure of the NLRP3 decamer bound to the cytokine release inhibitory drug CRID3

2021 ◽  
Author(s):  
Inga V. Hochheiser ◽  
Michael Pilsl ◽  
Gregor Hagelueken ◽  
Jonas Moecking ◽  
Michael Marleaux ◽  
...  
Keyword(s):  
Small Molecules ◽  
Nucleotide Binding Domain ◽  
Native Form ◽  
Spherical Structure ◽  
Cryo Electron Microscopy ◽  
Rational Drug ◽  
Inhibitory Drug ◽  
Drug Optimization ◽  
Apical Axis

NLRP3 is an intracellular sensor protein whose activation by a broad spectrum of exogenous and endogenous stimuli leads to inflammasome formation and pyroptosis. The mechanisms leading to NLRP3 activation and the way how antagonistic small molecules function remain poorly understood. Here we report the cryo-electron microscopy structures of full-length NLRP3 in its native form and complexed with the inhibitor CRID3 (also named MCC950). Inactive, ADP-bound NLRP3 is a decamer composed of homodimers of intertwined LRR domains that assemble back-to-back as pentamers with the NACHT domain located at the apical axis of this spherical structure. Molecular contacts between the concave sites of two opposing LRRs are mediated by an acidic loop extending from an LRR transition segment. Binding of CRID3 significantly stabilizes the NACHT and LRR domains relative to each other, allowing structural resolution of 3.9-4.2 Ang. CRID3 binds into a cleft, connecting four subdomains of the NACHT with the transition LRR. Its central sulfonylurea group interacts with the Walker A motif of the NLRP3 nucleotide-binding domain and is sandwiched between two arginines from opposing sites, explaining the specificity of NLRP3 for this chemical entity. With the determination of the binding site of this lead therapeutic, specific targeting of NLRP3 for the treatment of autoinflammatory and autoimmune diseases and rational drug optimization are within reach.

Spatial Structure Injection Molding Analysis of Suspended Bio-Carriers

2008 ◽  
Vol 575-578 ◽  
pp. 385-389 ◽  
Author(s):  
Fan Jiang ◽  
Wei Ping Chen ◽  
Yuan Yuan Li
Keyword(s):  
Injection Molding ◽  
Spatial Structure ◽  
Economic Benefit ◽  
Structure Optimization ◽  
Injection Pressure ◽  
Columnar Structure ◽  
Spherical Structure ◽  
Wing Panel

The realizability for spatial structure of suspended bio-carriers should be considered in the process of structure designing. Injection molding analysis could obtain the injection performance of spatial structure, and provide the references for economic benefit of structure realization and structure optimization, so it become an important tool for structure designing and optimization. In oder to apply the injection molding analysis to the process of bio-carriers designing, three structures, multi-plane spherical structure, straight chip columnar structure, wing panel structure are designed. Their injection performances, such as best location of injection, fill time, and injection pressure are be compared, the results show that the multi-plane spherical structure has the best injection economic benefit.

The effects of multifunctional coating on Li-rich cathode material with hollow spherical structure for Li ion battery

2017 ◽  
Vol 43 (12) ◽  
pp. 8616-8624 ◽  
Author(s):  
Hao Chen ◽  
Zhenjiang He ◽  
Zimo Huang ◽  
Liubin Song ◽  
Chensi Shen ◽  
...  
Keyword(s):  
Cathode Material ◽  
Li Ion Battery ◽  
Spherical Structure ◽  
Li Ion
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