Abstract: The present invention provides an antifouling ability-imparting agent that adheres well to a variety of water treatment membranes such as reverse osmosis membranes and imparts excellent antifouling ability to the water treatment membranes.

Abstract: The present invention relates to the preservation and packaging of the agricultural products and discloses a gas remover and a method for packaging agricultural products. The gas remover provided herein is capable of effectively removing gas released in a vacuum sealer bag. The gas remover includes calcium hydroxide, which can effectively removes gas released by the plant-based agricultural products in the vacuum sealer bag, avoiding the expansion of the vacuum sealer bag.

Abstract: The present invention provides an antifouling ability-imparting agent that adheres well to a variety of water treatment membranes such as reverse osmosis membranes and imparts excellent antifouling ability to the water treatment membranes.

Abstract: The present disclosure provides a system and method for monitoring diesel vehicle emissions based on big data of remote sensing. The monitoring system includes a vehicle remote sensing data monitoring platform, a host computer, an emission remote sensing instrument, a vehicle driving state monitor, an information display screen and a license plate camera. The emission remote sensing instrument is used to acquire information of a pollutant in an exhaust plume. The vehicle driving state monitor is used to acquire a vehicle speed and acceleration. The license plate camera is used to capture license plate information. The host computer is used to process and calculate vehicle cycle and emission information. The vehicle remote sensing data monitoring platform is used to determine a high-emission vehicle, and pre-store information of all diesel vehicles, different driving cycle bins of each type of diesel vehicles and high-emission thresholds set for different bins.

Abstract: The present invention relates to the preservation and packaging of the agricultural products and discloses a gas remover and a method for packaging agricultural products. The gas remover provided herein is capable of effectively removing gas released in a vacuum sealer bag. The gas remover includes calcium hydroxide, which can effectively removes gas released by the plant-based agricultural products in the vacuum sealer bag, avoiding the expansion of the vacuum sealer bag.

Abstract: A distributed optical fiber disturbance positioning system based on the asymmetric dual Mach-Zehnder interference, unlike traditional dual Mach-Zehnder distributed optical fiber disturbance sensing system, the present invention adopts two narrow-bandwidth optical sources (1a, 1b) and adopts corresponding DWDM (3a, 3b) before the detector (4a, 4b) to filter the backscatter noise of the optical fiber, and can solve the problems of having too low SNR due to backscatter influence when the sensing distance is long. The present invention also provides a positioning method for applying the system, which obtains the TFD of the disturbance frame signals by using the time-frequency analysis method based on the short-term average frequency, and takes the points near the point of maximum frequency as the effective signal segment for performing cross-correlation time delay estimation, thus obtaining the delay, and the disturbance position.

Abstract: A distributed optical fiber disturbance positioning system based on the asymmetric dual Mach-Zehnder interference, unlike traditional dual Mach-Zehnder distributed optical fiber disturbance sensing system, the present invention adopts two narrow-bandwidth optical sources (1a, 1b) and adopts corresponding DWDM (3a, 3b) before the detector (4a, 4b) to filter the backscatter noise of the optical fiber, and can solve the problems of having too low SNR due to backscatter influence when the sensing distance is long. The present invention also provides a positioning method for applying the system, which obtains the TFD of the disturbance frame signals by using the time-frequency analysis method based on the short-term average frequency, and takes the points near the point of maximum frequency as the effective signal segment for performing cross-correlation time delay estimation, thus obtaining the delay, and the disturbance position.