Nippon Chemical Industrial Co., Ltd.

University of Shanghai for Science and Technology

Shanghai University of Engineering Science

Shanghai Sany Science and Technology Co., Ltd

Hui Guo

Yi Wang

Dongdong Zhang

Chao Yang

Pei Sun

Wanbin Zhang

Lihui Zhao

Shuo Weng

Jinzhi Feng

Delong Liu

Tao Yuan

Chi Xu

Liangjian Li

Yansong Wang

John Lanning

Minghui Ma

Biwen Qiu

Shuang Huang

Xinhua Guo

Ningning Liu

Hua Wan

Xipei Ma

Lifeng Ma

Botong Wang

Yangang Liu

Chengduo Li

Linrui Sun

A low inductance capacitor with a concentric ring capacitor core similar to water ripple diffusion is provided, including a laminated bus bar, a capacitor core, a filler and a shell; where the laminated bus bar is embedded in a center of the capacitor core; and the filler is poured between the capacitor core and the shell. The capacitor features a concentric ring-shaped design. The capacitor core consists of metal electrode layers, insulating inner films, and a central gap hole, with the metal electrode layers arranged in a concentric pattern that decreases in thickness, mimicking the diffusion of water ripples.

Low inductance capacitor with concentric ring capacitor core similar to water ripple diffusion

A low inductance capacitor with annular distributed cores is provided, which relates to the technical field of capacitors, and includes a lower bus bar, capacitor cores and an upper bus bar. Currents accessed from lower connection terminals flow to a closed end of the lower bus bar along copper bar connecting plates, and flow to the upper bus bar through the capacitor cores, and then flow out from upper connection terminals to form a loop. And positions of the copper bar connecting plates are in one-to-one correspondence with positions of the capacitor cores, and flow directions of the currents are opposite.

Low inductance capacitor with annular distributed cores

The invention relates to an asymmetric hydrogenation method for ketone compounds, comprising the step of: under hydrogen atmosphere, in the presence of an in situ catalyst derived from a chiral ligand and a ruthenium salt, adding a ketone compound and a base into a second solvent to carry out an asymmetric hydrogenation for the ketone compound. The invention can obtain a conversion of 100% and a highest asymmetric inducement effect of 99.7% for the ketone compound. The invention has the advantages including simple procedure, high conversion and selectivity, good atom economy and good prospect of industrial application.

Asymmetric hydrogenation method for ketone compound

Provided is a mobile counterweight equipment of crawler crane, which includes a main platform, wherein the said mobile counterweight equipment further includes a pair of sliding rails on two sides of the main platform, a slider and counterweight equipment on the sliding rails; the counterweight equipment is connected to the slider, the slider sliding back and forth on the sliding rails. Accordingly, total weight of the counterweight is greatly reduced, the structure is simplified and it is easy to operate and to maintain.

Mobile counterweight equipment of crawler crane and the crane including the equipment

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Shanghai, China

Hui Guo