Zhejiang University

Chengda Pharmaceuticals Co., Ltd.

Xing Huang

Hong Xu

Donglian Qi

Yunfeng Yan

Zhongbin Xu

Yulin Chen

Wei Qian

Huafei Shen

Jun Zhang

Baicun Wang

Shenjun Weng

Zongxi Huang

Yu Feng

Changming Dong

Yuhua Shi

Ye Chen

Zhengke Wang

Xianbo Wang

Binbin He

Zhipeng Wang

Junkui Dang

The invention discloses a method for synthesizing 1,7-naphthyridine derivatives, which relates to the technical field of synthesizing pharmaceutical intermediates and organic chemical intermediates, wherein the method includes: (1) 2-chloro-3-amino-pyridine being used as Compound I as a starting material, and protecting an amino group to prepare Compound II; (2) the Compound II reacting with an aldehydation reagent under alkaline conditions to obtain Compound III; (3) cyclizing the Compound III with acrylate compounds under the action of Lewis acid to prepare compound IV.

Method for synthesizing 1,7-naphthyridine derivatives

A microgrid self-triggering control method and system for resisting FDI attacks is provided. The method includes the following steps: S: adopting primary control based on droop control for a microgrid; S: designing a secondary control strategy of the microgrid, where the secondary control strategy includes frequency recovery and fair distribution of active power; and S: designing a microgrid distributed self-triggering control method of a hash encryption method after considering the condition that the FDI attacks are injected into a secondary control communication link, so as to resist false malicious data in the microgrid and achieve secondary control. According to the microgrid self-triggering control method and system, a distributed secondary control target of the microgrid is achieved even under the FDI attacks, the injected malicious data can be quickly detected and eliminated, and the distributed secondary control communication network of the microgrid can be protected.

Microgrid self-triggering control method and system for resisting FDI attacks

A droplet preparation and size control device based on electrowetting step emulsification is provided, including a syringe pump, a metal pipeline, a micro-channel, two electrode plates, a continuous phase container and a direct-current power supply, wherein: the syringe pump, the metal pipeline and the micro-channel are successively connected; an outlet of the micro-channel is clamped and sealed between the two electrode plates; each electrode plate consists of four layers, respectively a base layer, a conducting layer, an insulating layer and a hydrophobic layer; a cathode of the direct-current power supply is connected with the metal pipeline, and an anode of the direct-current power supply is connected with the conducting layer of each electrode plate; the syringe pump is filled with dispersed phase fluid; continuous phase fluid is injected into the continuous phase container and immerses the electrode plates.

Droplet preparation and size control device based on electrowetting step emulsification

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Zhejiang, China

Xing Huang