Zobrazeno 1 - 10 of 222 pro vyhledávání: '"Shan, Da"'
1
Akademický článek
Enhanced Magnetocaloric Properties of the (MnNi)0.6Si0.62(FeCo)0.4Ge0.38 High-Entropy Alloy Obtained by Co Substitution
Autor: Zhigang Zheng, Pengyan Huang, Xinglin Chen, Hongyu Wang, Shan Da, Gang Wang, Zhaoguo Qiu, Dechang Zeng
Publikováno v: Entropy, Vol 26, Iss 9, p 799 (2024)
In order to improve the magnetocaloric properties of MnNiSi-based alloys, a new type of high-entropy magnetocaloric alloy was constructed. In this work, Mn0.6Ni1−xSi0.62Fe0.4CoxGe0.38 (x = 0.4, 0.45, and 0.5) are found to exhibit magnetostructural
Externí odkaz: https://doaj.org/article/a4462e2e08d349699c6a54e9d5a83632
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2
Akademický článek
A Planning Method for Multi-Axis Point-to-Point Synchronization Based on Time Constraints
Autor: Shan-Da Wang, Xiao Luo, Shi-Jie Xu, Qing-Sheng Luo, Bao-Ling Han, Guan-Hao Liang, Yan Jia
Publikováno v: IEEE Access, Vol 8, Pp 85575-85604 (2020)
In this paper, a third-order S-curve is used to model the motion issue. A closed method of solving is derived for the optimal point-to-point(P2P) time issue based on the model. Based on the P2P time-optimal solution, a closed multi-axis synchronizati
Externí odkaz: https://doaj.org/article/3520b03a2b4d420da043a10f10b0aa27
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3
Akademický článek
Air-Filled Substrate Integrated Waveguide Fed Magneto-Electric Dipole Antenna Array for Millimeter-Wave Applications
Autor: Shan Da, Yujian Li, Junhong Wang
Publikováno v: IEEE Access, Vol 7, Pp 129307-129316 (2019)
A substrate integrated magneto-electric (ME) dipole antenna array with an improved radiation efficiency is presented in the 28-GHz band. A novel full-corporate air-filled substrate integrated waveguide (SIW) feed network with low losses is designed a
Externí odkaz: https://doaj.org/article/75d63c84982442fdb2e71c75aaa31117
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4
Both Amide-Bearing α- and β-Amino Acids from Natural Aspartic Acid Are Efficient Organocatalysts for Enantioselective Aldol Reactions
Autor: Chao-Shan Da, Rui Zhang, Gen-Fa Wen, Chu-Yu Zhang
Publikováno v: Synthesis. 55:670-682
This work aims to compare and explore the different catalytic efficiencies of structurally similar α- and β-amino acids in an asymmetric aldol transformation. Interestingly, aspartic acid is not only an α-amino acid, but also a β-amino acid. Thus
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9e9db054e440d768b8bd765e10cce6aa
https://doi.org/10.1055/a-1953-1656
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5
Efficient Catalyst-Free Henry Reaction between Nitroalkanes and Aldehydes or Trifluoromethyl Ketones Promoted by Tap Water
Autor: Chao-Shan Da, Zhi-Hong Du, Meng Yuan, Bao-Xiu Tao, Tie-Ying Ding
Publikováno v: Synthesis. 54:5461-5470
The first examples of highly effective Henry reactions between nitroalkanes and aldehydes or trifluoromethyl ketones that proceed under catalyst-free and additive-free conditions, in a recyclable tap water medium, and at room temperature are reported
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::76ea0fb9e576134dd0846131bcd6246f
https://doi.org/10.1055/a-1933-3709
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9
Peptide-Catalyzed Highly Asymmetric Cross-Aldol Reaction of Aldehydes to Biomimetically Synthesize 1,4-Dicarbonyls
Autor: Pei Wang, Chao-Shan Da, Meng Yuan, Qin Wenjuan, Yan-Li Xu, Bao-Xiu Tao, Zhi-Hong Du
Publikováno v: Organic Letters. 22:4444-4450
β-Turn tetrapeptides were demonstrated to catalyze asymmetric aldol reaction of α-branched aldehydes and α-carbonyl aldehydes, i.e. glyoxylates and α-ketoaldehydes, to biomimetically synthesize acyclic all-carbon quaternary center-bearing 1,4-dic
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ed531d96f8f4e83d87e36aed3cf867d7
https://doi.org/10.1021/acs.orglett.0c01407
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