scholarly journals Rapid Construction of Fe–Co–Ni Composition-Phase Map by Combinatorial Materials Chip Approach

2018 ◽  
Vol 20 (3) ◽  
pp. 127-131 ◽  
Author(s):  
Hui Xing ◽  
Bingbing Zhao ◽  
Yujie Wang ◽  
Xiaoyi Zhang ◽  
Yang Ren ◽  
...  
Keyword(s):  
Rapid Construction ◽  
Phase Map ◽  
Combinatorial Materials

Rapid construction of superhydrophobic fabric coating assisted with ‘Tyndall Effect’

2021 ◽  
pp. 1-5
Author(s):  
Huibin Lei ◽  
Xiangyu Huang ◽  
Jijun Luo ◽  
Jiajie Chen ◽  
Quanshan Wei
Keyword(s):  
Rapid Construction ◽  
Tyndall Effect

Enantioselective synthesis of chiral 3-alkyl-3-nitro-4-chromanones via chiral thiourea-catalysed intramolecular Michael-type cyclization

2021 ◽  
Author(s):  
Huiqing Chen ◽  
Jie Tang ◽  
Ting Liu ◽  
Li-Fang Yu ◽  
Dong Xing ◽  
...  
Keyword(s):  
Enantioselective Synthesis ◽  
Cyclization Reaction ◽  
Rapid Construction

Herein we report an enantioselective method for the rapid construction of chiral 3-nitro-4-chromanones via a chiral thiourea-catalyzed intramolecular Michael-type cyclization reaction. With this method, a series of 3,3-disubstituted-3-nitro-4-chromanones bearing contiguous...

A Color-Doppler Shear-Wave-Imaging Phase-reconstruction Method Using Four Color Flow Images

2016 ◽  
Vol 39 (3) ◽  
pp. 172-188
Author(s):  
Naoki Sunaguchi ◽  
Yoshiki Yamakoshi ◽  
Takahito Nakajima
Keyword(s):  
Image Quality ◽  
Shear Wave ◽  
Initial Phase ◽  
Color Doppler ◽  
Reconstruction Method ◽  
Phase Reconstruction ◽  
Color Flow ◽  
Shear Wave Imaging ◽  
Wave Imaging ◽  
Phase Map

This study investigates shear wave phase map reconstruction using a limited number of color flow images (CFIs) acquired with a color Doppler ultrasound imaging instrument. We propose an efficient reconstruction method to considerably reduce the number of CFIs required for reconstruction and compare this method with Fourier analysis-based color Doppler shear wave imaging. The proposed method uses a two-step phase reconstruction process, including an initial phase map derived from four CFIs using an advanced iterative algorithm of optical interferometry. The second step reduces phase artifacts in the initial phase map using an iterative correction procedure that cycles between the Fourier and inverse Fourier domains while imposing directional filtering and total variation regularization. We demonstrate the efficacy of this method using synthetic and experimental data of a breast phantom and human breast tissue. Our results show that the proposed method maintains image quality and reduces the number of CFIs required to four; previous methods have required at least 32 CFIs to achieve equivalent image quality. The proposed method is applicable to real-time shear wave elastography using a continuous shear wave produced by a mechanical vibrator.

Intramolecular Diels–Alder reactions of the furan diene (IMDAF); rapid construction of highly functionalised isoquinoline skeletons

1995 ◽  
pp. 2393-2398 ◽  
Author(s):  
Tomas Hudlicky ◽  
Gabor Butora ◽  
Stephen P. Fearnley ◽  
Andrew G. Gum ◽  
P. J. Persichini ◽  
...  
Keyword(s):  
Diels Alder ◽  
Rapid Construction

High-Throughput Synthesis and Characterization of a Combinatorial Materials Library in Bulk Alloys

2021 ◽  
Vol 52 (4) ◽  
pp. 1159-1168
Author(s):  
Lei Zhao ◽  
Yuanxun Zhou ◽  
Hui Wang ◽  
Xuebin Chen ◽  
Lixia Yang ◽  
...  
Keyword(s):  
High Throughput ◽  
Synthesis And Characterization ◽  
Combinatorial Materials ◽  
Bulk Alloys

scholarly journals 3D Reconstruction with Single-Shot Structured Light RGB Line Pattern

Sensors ◽  
2021 ◽  
Vol 21 (14) ◽  
pp. 4819
Author(s):  
Yikang Li ◽  
Zhenzhou Wang
Keyword(s):  
3D Reconstruction ◽  
Moving Objects ◽  
Structured Light ◽  
Color Space ◽  
Reconstruction Technique ◽  
Single Shot ◽  
Line Pattern ◽  
Hsv Color Space ◽  
Phase Map ◽  
Line Segmentation

Single-shot 3D reconstruction technique is very important for measuring moving and deforming objects. After many decades of study, a great number of interesting single-shot techniques have been proposed, yet the problem remains open. In this paper, a new approach is proposed to reconstruct deforming and moving objects with the structured light RGB line pattern. The structured light RGB line pattern is coded using parallel red, green, and blue lines with equal intervals to facilitate line segmentation and line indexing. A slope difference distribution (SDD)-based image segmentation method is proposed to segment the lines robustly in the HSV color space. A method of exclusion is proposed to index the red lines, the green lines, and the blue lines respectively and robustly. The indexed lines in different colors are fused to obtain a phase map for 3D depth calculation. The quantitative accuracies of measuring a calibration grid and a ball achieved by the proposed approach are 0.46 and 0.24 mm, respectively, which are significantly lower than those achieved by the compared state-of-the-art single-shot techniques.

Rhodium-Catalyzed, Phosphorus(III)-Directed Hydroarylation of Internal Alkynes: Facile and Efficient Access to New Phosphine Ligands

Synlett ◽  
2020 ◽  
Author(s):  
Minyan Wang ◽  
Zhuangzhi Shi ◽  
Huanhuan Luo ◽  
Dawei Wang
Keyword(s):  
High Selectivity ◽  
Enantiomeric Excess ◽  
Phosphine Ligands ◽  
Rapid Construction ◽  
Efficient Access ◽  
Internal Alkynes ◽  
Great Progress ◽  
Chiral Phosphine Ligands ◽  
Optimized Conditions ◽  
Made In

AbstractOrganophosphines are an important class of ligands widely used in organic chemistry. Although great progress has recently been made in the rapid construction of new phosphines through Rh- or Ru-catalyzed C–H bond functionalizations, synthetic access to more diverse phosphines remains a challenge. We describe an efficient process for the rhodium-catalyzed phosphorus(III)-directed hydroarylation of internal alkynes to generate various alkenylated and 2′,6′-dialkenylated biarylphosphines with high selectivity. A range of diverse alkynes and phosphines were effectively prepared with broad functional-group compatibility under the optimized conditions. In addition, the developed protocol can be extended to modify chiral phosphine ligands, providing enantioenriched alkenylated phosphines without erosion of the enantiomeric excess.

Rapid construction of the tricyclic core of annotinine hydrate

Tetrahedron ◽  
2021 ◽  
Vol 82 ◽  
pp. 131934
Author(s):  
Hongliang Shi ◽  
Jinwei Huang ◽  
Shiqiang Ma ◽  
Xiaolin Ju ◽  
Jinbo Duan ◽  
...  
Keyword(s):  
Rapid Construction ◽  
Tricyclic Core
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