Nuctech Company Limited

Hong Kong Sunstar Technology Co., Limited

Changzhou Entry-exit Inspection and Quarantine

Wen He

Hua Peng

Yangtian Zhang

Zhongxia Zhang

Yuntai Bao

Hui Li

Jin Ping Lin

Haichao Zhou

Bin Xue

Wangyang Wu

Fuyi Liu

Lichun Guo

Zhiqiang Chen

Yuanjing Li

Tong Zhang

Yaoxin Wang

Peng Jiao

Yihao Peng

Changzhuo Chen

Jianhua Liu

Haijun Yu

Xinmin Liu

Yi Xiao

Guanxing Li

Xiaoti Yin

Jianhu Ma

Ping'an Luo

Qifang Wang

Zeying Wu

Yuejin Qiu

A method for computing device maintenance, an apparatus, a storage medium and a program product. The method includes: monitoring an operating status of a computing device; and sending a notification message to a maintenance device if the computing device operates abnormally, where the notification message is used to notify that the computing device operates abnormally, and is used to notify to restart the computing device. The cost of human resources can be reduced, and stability and safety of operation of the computing device is improved to some extent.

Method for computing device maintenance, apparatus, storage medium and program product

A method for information configuration, an apparatus, an electronic device, a storage medium and a program product. By searching for a computing device within a searching range of devices, and sending device configuration information to a searched computing device, the cost of human resources is reduced and the configuration efficiency of computing devices is improved.

Method for information configuration, apparatus, electronic device, storage medium and program product

The present disclosure discloses a corona discharge assembly, an ion mobility spectrometer and a corona discharge method. The corona discharge assembly includes at least one corona discharge unit, wherein, the corona discharge unit includes a pair of corona metal wires arranged in parallel, and pulses having the same amplitude but opposite polarities are applied to the corona metal wires arranged in parallel, respectively. The present disclosure can generate more reactive ions than corona needles or tips, facilitate improving sensitivity of the ion mobility spectrometer, and effectively prolong service life of a corona source to 3-10 years.

Corona discharge assembly, ion mobility spectrometer and corona discharge method

Embodiments of the present invention provide an air dryer for an ion mobility spectrometer, comprising a heating element used to heat a thermal conduction device, thereby heating the desiccant. Embodiments of the present invention further provide a regeneration method, by which the operation mode of the ion mobility spectrometer may be switched, so that during a non-working time of the ion mobility spectrometer, the desiccant is heated and thereby regenerated. With the present invention, the desiccant is avoided from being regularly replaced, thereby improving the performance and increasing the service life of the dryer. Regeneration of the desiccant is performed by making full use of the non-working time of the ion mobility spectrometer without affecting normal operation of instrument.

Air dryer for ion mobility spectrometer

The present disclosure discloses a continuous operable gas purification device in an ion mobility spectrometer including a housing provided with a cylinder cavity; a dry gas supply unit; a rotating barrier arranged in a radial direction of the cylinder cavity to divide it into a baking cavity and a working cavity; and a rotating mechanism. The housing is provided with a dry gas inlet and a dry gas outlet, which are communicated with the baking cavity, and a sample gas inlet and a sample gas outlet, which are communicated with the working cavity. The dry gas supply unit is connected with the dry gas inlet for a dry gas supply to the dry gas inlet. The baking cavity is provided with a heating unit correspondingly. The rotating mechanism is provided at a central position of the cylinder cavity and connected with the rotating barrier for rotating it at intervals.

Continuous operable gas purification device in an ion mobility spectrometer

An electrode structure for an ion drift tube and an ion drift tube with the electrode structure are disclosed. The electrode structure comprises an annular electrode. The annular electrode has an inner edge bent towards one side such that a section of a central portion of the annular electrode has a swallowtail shape. With the ion drift detection instrument, ions in a drift state can travel along focusing electric lines of force, and since the high-voltage intervals between the electrodes are increased at a uniform acceleration, the generated electric field enables the ions to be in a uniformly accelerated drift state so that both the sensitivity and resolution of the mobility spectrum of the detection instrument can reach optimum.

Electrode structure for ion drift tube and ion drift tube including the structure

A sampling component including a sampling body that can be electrically heated and an outer surface of which has a wiping sampling area to receive a sample; and an insulated handle that is connected to one longitudinal end of the sampling body. The sampling component contacts directly electrical contacts of an external power supply after being positioned in a analysis chamber, the power supply is turned on to vaporize the sample, and the power is turned off immediately after the sampling component removed from the chamber. The power consumption and a malfunction caused by long-term use of the sampling device under a high temperature can be avoided. A sampling device having the sampling component and an ion mobility spectrometer having the sampling device are also provided.

Sampling component, sampling device and ion mobility spectrometer

A device for intermittently jetting gas includes a gas source, a gas conduit with one end being communicated with the gas source and the other end being in communication with a nozzle, a rotary disc and a motor, the disc being mounted on a rotating shaft of the motor for rotating along with the shaft, wherein the rotary disc is provided with at least one opening through which a gas in the gas conduit is jetted when the opening is aligned with the outlet of the gas conduit. The device can freely adjust the gas jetting frequency by adjusting the rotation speed of the motor, and thus increase the gas jetting frequency and effectively flow off the suspicious particles carried in the human clothes.

Device for intermittently jetting gas

A trace detector is disclosed. The trace detector comprises: a desorption chamber defining a desorption region, and the desorption chamber has a housing. The housing has a sample feeding port for introducing a substance to be detected into the desorption chamber and a gas discharge port for discharging gas entraining the sample from the desorption chamber. A controller is used for controlling the trace detector in such a manner that the sample feeding port and the gas discharge port are in fluid communication with the desorption chamber during pre-concentration process of the trace detector, thereby continuously feeding and collecting the sample. With the above manner, data collecting, processing and analyzing processes may be performed by the trace detector throughout the sample feeding process and the gas pre-concentrating process. The trace detector has an excellent detecting period of time whether the substance to be detected in the gas is in a high concentration state or a low concentration state, and the trace detector can perform continuous sampling for a long time, thereby improving a ratio of the amount of trapped substance to the amount of the substance entrained in the gas to be detected and the amount of the cumulated trapped substance, decreasing the probability of failing to detect the substance, and increasing detection sensitivity. In addition, the detection efficiency of the detector is increased during the gas pre-concentration process.

Trace detector and analytical method for trace detector

The present invention relates to a hand-held swipe sampling device which can continuously supply sampling swabs. The swipe sampling device comprises a hand-held portion and a swipe sampling portion, wherein the hand grip portion is a rectangular housing in the interior of which contains a continuous sampling swab space, with a bottom cover provided on the underside of the sampling swab space, and a sampling swab outlet provided at an upper end of one side of the sampling swab space; a front end face of the swipe sampling portion configured as an accurate swipe sampling surface and provided with a sampling swab cutter. The sampling device according to the present invention is designed in a manner that continuous folded sampling swabs can be mounted and used in the sampling device such that the device can be used for many times after each mounting of the sampling swabs, thereby simplifying the mounting operations, reducing the contamination opportunities and facilitating the storage of the sampling swabs.

Hand-held swipe sampling device with sampling swab storage and cutter

A sample processing system and a sample processing method for a trace detector are disclosed. The system comprises a sampling substrate for collecting a substance or substances from the surface of an object to be tested by contacting the sampling substrate with the surface of the object, and a trace detector. The trace detector includes a sample feeding device provided with a sample feeding part. The substance collected by the sampling substrate can be transferred to a surface of the sample feeding part so that the substance transferred to the surface of the sample feeding part can be detected. With the configuration of some embodiments of the present invention, a sampling substrate made of chemical fiber is used to collect a sample from the surface of an object to be tested by contacting the sampling substrate with the surface of the object to be tested. The sample collected by the sampling substrate is mechanically transferred to a metal film or mesh of the sample feeding device of the trace detector. Then, the metal film or mesh of the sample feeding device is heated to vaporize the sample and to release the sample vapor into the trace detector. Therefore, the efficiency of sample collection and desorption processes can be improved. In addition, the direct heating of a sampling substrate can be avoided so as to decrease the interference of the sampling substrate with trace detection.

Sample processing system and sample processing method for trace detector

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Beijing, China

Wen He