S. K. Zhang

Visible Light Photocatalyzed Norrish Type II Reaction of Acrylamides for the Synthesis of β‐Lactams

Haoyuan Li, S. K. Zhang, Xiaoying Niu, Qingyuan Meng et autres

Abstract Here, we present a strategy for the visible‐light‐catalyzed synthesis of β‐lactams based on the Norrish type II reaction. This protocol uses acetonitrile as solvent and commercially available photocatalyst to drive the reaction. Notably, various challenging substrate types reported in previous studies …

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Fatigue and Acoustic Emission Characteristics of Granite under Different Cyclic Loading Paths

Qingwei Zhang, Jiang Xiao, S. K. Zhang

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Visible-Light-Promoted 6π Photocyclization of ortho-Biaryl-Appended β-Ketoesters

S. K. Zhang, Shanshan Zhang, Junli Li, Shigang Shen et autres

A photocatalyst- and additive-free visible-light-induced 6π-photocyclization of ortho -biaryl-appended β-ketoesters has been developed. Upon irradiation with visible light, substrates undergo 6- endo -trig cyclization/1,5-H shift to 9,10-dihydrophenanthren-9-ols with high efficiency and selectivity. The reaction proceeds via conrotatory ring closure followed by a …

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The Lobster Eye Imager for Astronomy Onboard the SATech-01 Satellite

Z. X. Ling, Xiaoqin Sun, C. Zhang, Shi-Yang Sun et autres

The Lobster Eye Imager for Astronomy (LEIA), a pathfinder of the Wide-field X-ray Telescope of the Einstein Probe (EP) mission, was successfully launched onboard the SATech-01 satellite of the Chinese Academy of Sciences on 27 July 2022. In this paper, we introduce …

The Lobster Eye Imager for Astronomy Onboard the SATech-01 Satellite

Z. X. Ling, Xiaoqin Sun, C. Zhang, S. L. Sun et autres

Abstract The Lobster Eye Imager for Astronomy (LEIA), a pathfinder of the Wide-field X-ray Telescope of the Einstein Probe mission, was successfully launched onboard the SATech-01 satellite of the Chinese Academy of Sciences on 2022 July 27. In this paper, we introduce …

cn, us (code pays fourni par la source)

First Wide Field-of-view X-Ray Observations by a Lobster-eye Focusing Telescope in Orbit

C. Zhang, Z. X. Ling, Xiujun Sun, S. L. Sun et autres

Abstract As a novel X-ray focusing technology, lobster-eye micropore optics (MPO) feature both a wide observing field of view and true imaging capability, promising sky monitoring with significantly improved sensitivity and spatial resolution in soft X-rays. Since first proposed by Angel, the …

cn, gb, de, nl (code pays fourni par la source)

First wide field-of-view X-ray observations by a lobster eye focusing telescope in orbit

C. Zhang, Z. X. Ling, Xiaoqin Sun, Shi-Yang Sun et autres

As a novel X-ray focusing technology, lobster eye micro-pore optics (MPO) feature both a wide observing field of view and true imaging capability, promising sky monitoring with significantly improved sensitivity and spatial resolution in soft X-rays. Since first proposed by Angel (1979), …