Shenzhen Mindray Bio-Medical Electronics Co., Ltd.

Byd Company Limited

Shenzhen Institute for Drug Control (Shenzhen Testing Center of Medical Devices)

Shenzhen Institute for Drug Control

Yan Yan

Jue Wang

Tiejie Wang

Guo Yin

Jing Li

Yi Lu

Cheng Luo

Yang Wang

Jie Zhu

Kun Jiang

Lijun Wang

Yin Hui

Lihe Xiao

Wenlong Lang

Xiaoying Guan

Dongqi Han

Xueqing Li

Lechang Li

Provided is a near-infrared spectroscopy-based method for chemical pattern recognition of the authenticity of the traditional Chinese medicine Gleditsiae Spina. The method uses the combination of a near-infrared spectroscopy acquisition method, a 1st derivative pretreatment method and a successive projection algorithm, a Kennard-Stone algorithm and a marching algorithm to perform chemical pattern recognition on the authenticity of the Gleditsiae Spina. The results of the pattern recognition method are accurate and reliable, and Gleditsiae Spina and counterfeits thereof can be accurately distinguished. The present application is the first to establish a method for the chemical pattern recognition of the quality of Gleditsiae Spina based on near-infrared spectroscopy, and can accurately distinguish between Gleditsiae Spina and counterfeits thereof, and provides scientific basis for the quality evaluation of Gleditsiae Spina.

Near-infrared spectroscopy-based method for chemical pattern recognition of authenticity of traditional Chinese medicine

The present application discloses a method and a device for vehicle security communication, a vehicle multimedia system, and a vehicle. The method applied to a security chip comprises: receiving a control instruction from a network system when the network system is connected, wherein the control instruction includes encrypted control data; decrypting the encrypted control data in the control instruction; obtaining the decrypted control data when the decryption is successful; and transmitting the decrypted control data to the vehicle body system to make the vehicle body system control the vehicle to perform a target operation according to the decrypted control data.

Secure communication method and apparatus for vehicle, multimedia system for vehicle, and vehicle

A method for rapidly measuring melatonin adulteration of Chinese patent medicines and healthcare foods comprises: (1) extracting melatonin added to a Chinese patent medicine or healthcare food by using ethyl acetate; and (2) adding p-dimethylaminocinnamaldehyde to the extracted solution, and observing color. The method is rapid, simple and convenient, has strong specificity, high accuracy, reaction sensitivity, and a wide application range, and is applicable to on-site detection of melatonin adulteration of a Chinese patent medicine or healthcare food.

Method for rapidly measuring melatonin adulteration of Chinese patent medicine or healthcare food

A pneumatic pinch valve assembly having a lever, a piston supporting a pressing piece, and a fluid tube receiving space formed between the lever and the pressing piece for receiving fluid tubes is disclosed. Air is introduced into a cavity to actuate the piston in order to pinch a fluid tube between the lever and the pressing piece to intercept a fluid flow through the tube. A pinching action control feature is located between the piston and the pressing piece and is used to protect the fluid tube by limiting one or more amounts of compression of the fluid tube during operation. The amount of compression of the fluid tube is able to be adjusted so that the fluid tube is not easily deteriorated during long-time operation.

Pneumatic pinch valve

The application provides a particle analyzer based on sheath flow impedance method comprising a flow cell and a counting circuit, wherein the flow cell includes a front chamber and a back chamber, the front chamber includes a particle suspension liquid inlet and a front sheath liquid inlet, the back chamber includes a back sheath liquid inlet and a waste liquid outlet, an aperture being provided between the front and back chambers and each of the front and back chambers being connected to the counting circuit via an electrode respectively. The particle analyzer further comprise a back sheath liquid isolating chamber, the back sheath liquid stored on the bottom of the back sheath liquid isolating chamber flowing into the back chamber automatically and continuously due to the liquid level difference between the liquid in the back sheath liquid isolating chamber and the liquid in the back chamber, or due to a combination of said liquid level difference and the interior negative pressure of the back chamber. The particle analyzer may further comprise a waste liquid isolating chamber, which causes isolation of the internal fluid passageway connecting the inlet and the outlet of the waste liquid isolating chamber by the interior air. Back-flow of the liquid specimen can be prevented during a detection process, noises can be mitigated effectively, the sensitivity for detection of particles can be improved, and introduction of electromagnetic noises to the flow cell from the back sheath liquid or the waste liquid can be avoided.

Particle analyzer based on sheath flow impedance method

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Shenzhen, China

Yan Yan