Zobrazeno 1 - 10
of 43
pro vyhledávání: '"Yu‐Ping He"'
Publikováno v:
Advanced Science, Vol 11, Iss 25, Pp n/a-n/a (2024)
Abstract The efficient synthesis of chiral 2,2‐disubstituted indolin‐3‐ones is of great importance due to its significant synthetic and biological applications. However, catalytic enantioselective methods for de novo synthesis of such heterocyc
Externí odkaz:
https://doaj.org/article/6bacfd6d12dd475f9435fcd364d7abc9
Autor:
Zun-Xia Hu, Jing Sima, Jia-Guo Cao, Yan Ke, Ying-Ying Zhang, Qiong-Tian Guo, Yu-Ping He, Hong-Xia Liao, Xiao Tan, Bo Qin, Li Li
Publikováno v:
International Journal of Ophthalmology, Vol 16, Iss 12, Pp 1996-2003 (2023)
AIM: To evaluate the effect of symmetrical arc incision correcting corneal astigmatism in femtosecond laser-assisted phacoemulsification (FLACS). METHODS: This study enrolled patients with cataract combined with regular corneal astigmatism of >0.75 D
Externí odkaz:
https://doaj.org/article/c8c42d0c1b31417ab918832f57ab2ef5
Publikováno v:
Communications Chemistry, Vol 6, Iss 1, Pp 1-10 (2023)
Abstract Morpholines and morpholinones are important building blocks in organic synthesis and pharmacophores in medicinal chemistry, however, C3-disubstituted morpholines/morpholinones are extremely difficult to access. Here we show the ZnCl2-catalyz
Externí odkaz:
https://doaj.org/article/6d256d1be2394c4a9927fec6f2a8c695
Publikováno v:
Applied Sciences, Vol 14, Iss 8, p 3449 (2024)
In this paper, a single-stage step-down power factor corrector without a full-bridge rectifier is developed, which is designed to operate in discontinuous conduction mode (DCM). In terms of control, the DCM has the advantages of simple control and ea
Externí odkaz:
https://doaj.org/article/ed549da0b6594ad196adf677fab2485b
Publikováno v:
BMC Pulmonary Medicine, Vol 21, Iss 1, Pp 1-6 (2021)
Abstract Background Endobronchial electrocautery is a common and safe therapeutic endoscopic treatment for malignant airway obstruction. Cerebral arterial air embolism (CAAE) is a rare but potentially fatal complication of endobronchial electrocauter
Externí odkaz:
https://doaj.org/article/cf28683d4684446d9c5c11570c209799
Publikováno v:
Guoji Yanke Zazhi, Vol 16, Iss 6, Pp 1019-1025 (2016)
AIM: To obtain the prevalence and risk factors of symptomatic dry eye disease(SDED)among college students in China.METHODS:Population-based cross-sectional study.Students in Medical School of Lanzhou University were approached. A questionnaire was us
Externí odkaz:
https://doaj.org/article/e54e1f869cc24c109bb562301d8424fb
Publikováno v:
Guoji Yanke Zazhi, Vol 15, Iss 1, Pp 65-68 (2015)
Pathological myopia are often complicated by a series of pathological changes in fundus including foveoschisis, which can lead to visual dysfunction when processing with retinal detachment, macular hole, epiretinal membrane and vitreoretinal traction
Externí odkaz:
https://doaj.org/article/a71844651fd24f1ea932bd02e118293d
Publikováno v:
Applied Sciences, Vol 9, Iss 17, p 3483 (2019)
A bridgeless buck-boost power-factor-correction (PFC) rectifier with positive output voltage is proposed herein. This PFC rectifier operates in the discontinuous conduction mode (DCM). Owing to the DCM, a good performance on PF is easily achieved as
Externí odkaz:
https://doaj.org/article/051cbf71e0f548d996409c0f076ddc73
Publikováno v:
Angewandte Chemie. 135
An unprecedent asymmetric catalytic benzilic amide rearrangement for the synthesis of α,α-disubstituted piperazinones is reported. The reaction proceeds via a domino [4+1] imidazolidination/formal 1,2-nitro- gen shift/1,2-aryl or alkyl migration se
Publikováno v:
Organic Chemistry Frontiers.
This review focuses on the very recent advances (from 2020 to the beginning of 2023) in enantioselective catalytic reactions for the construction of oxa-quaternary stereocenters.