Experimental and Theoretical Investigation of the Catalytic Activities of Different Zeolites for the Nitration of Toluene.

Zeolites are used in the field of toluene nitrification reactions, but their intrinsic mechanism is not well explained. In this work, three typical zeolites including HZSM-5, HY, and Hβ are selected as catalysts and used for the nitration of toluene and typical monosubstituted benzenes with NO, and it explores the intrinsic influences on the nitrification of toluene on various zeolites through experimental and theoretical methods. The acidic properties and pore structures of three different zeolites were investigated through appropriate characterization techniques.

Production Scheduling Optimization of Garment Intelligent Manufacturing System Based on Big Data.

In order to improve the efficiency of cloth laying and cutting integrated production process, this article proposes a method of optimal scheduling of cloth laying and cutting garment production system process based on big data and genetic algorithm. The chromosomes in the algorithm are expressed by real strings. The method of bit string crossover and mutation is used to solve the premature problem of the algorithm.

Real-Time Image Defect Detection System of Cloth Digital Printing Machine.

In order to solve the surface defects such as white silk, spots, and wrinkles on the fabrics in the process of digital printing production, a surface defect detection system for printed fabrics based on the accelerated robust feature algorithm is proposed. The image registration is mainly carried out by the speeded up robust features (SURF) algorithm; the bidirectional unique matching method is used to reduce the mismatch points, realize the accurate registration of the image, and extract the defect information through the difference algorithm. The experiment uses multiple images to verify the performance of the improved SURF algorithm.