Abstract: Disclosed is a time series InSAR tropospheric delay correction method for relieving atmospheric seasonal oscillation, so as to relieve the seasonal oscillation deviation caused by tropospheric delay. This method is based on the temporal and spatial characteristics of atmospheric delay. Firstly, based on the ERA-5 atmospheric grid data covering the study area, the ZTD negative exponential vertical profile function model is established. Fourier series function is introduced to establish the time series model for ? and ZTDr, Finally, according to the radar incidence angle parameters, the delay is changed from zenith direction to radar line of sight direction.

Abstract: The partition monitoring method for concrete dam operation key parts provided by the disclosure firstly utilizes the extracted monitoring data time-frequency vector to partition the concrete dam key parts, and on this basis, obtains time series measurement data of different types of monitoring instruments with high temporal and spatial correlation, so as to establish a graph structure. Then, the dependence of time dimension and variable dimension of multivariate time series data is captured, and the relationship between further learning and representation of graph attention network is provided. Furthermore, the final feature representation of time series measured data is obtained, and finally the anomaly score is calculated through the final feature representation to detect anomalies. The complementary mutual verification of multiple measuring points of monitoring instruments with various types is realized. The structural integrity and spatial distribution law of concrete dams are fully embodied.

Abstract: The present invention relates to a method for producing low-ash poultry plasma protein powder by utilizing poultry blood. Specifically, the method of the present invention comprises the steps of: mixing the poultry blood with an anticoagulant to obtain anticoagulated whole blood; centrifugally separating the anticoagulated whole blood to obtain plasma liquid; de-calcifying the plasma liquid via a precipitation reaction, ultra-filtrating the plasma liquid via a ultra-filtration membrane, emulsifying, and nano-filtrating to obtain the concentrated plasma liquid; and drying the concentrated plasma liquid to obtain the poultry plasma protein powder. The method of the present invention effectively overcomes the defect of difficult poultry blood deep processing, achieves the recycling of poultry blood resource, avoids wasting resources, and reduces environmental pollution; and the produced plasma protein powder has the advantages of high protein content, good palatability, balanced amino acid and the like.

Abstract: The present invention relates to a method for producing low-ash poultry plasma protein powder by utilizing poultry blood. Specifically, the method of the present invention comprises the steps of: mixing the poultry blood with an anticoagulant to obtain anticoagulated whole blood; centrifugally separating the anticoagulated whole blood to obtain plasma liquid; de-calcifying the plasma liquid via a precipitation reaction, ultra-filtrating the plasma liquid via a ultra-filtration membrane, emulsifying, and nano-filtrating to obtain the concentrated plasma liquid; and drying the concentrated plasma liquid to obtain the poultry plasma protein powder. The method of the present invention effectively overcomes the defect of difficult poultry blood deep processing, achieves the recycling of poultry blood resource, avoids wasting resources, and reduces environmental pollution; and the produced plasma protein powder has the advantages of high protein content, good palatability, balanced amino acid and the like.