Searching for bioactive compounds from natural resources such as plant materials has become a focus for study. Several models, such as animal (biofluid, organ and tissue) and cellular (several kinds of cell lines), have traditionally been used for this purpose. As a fast, economic and effective way to identify or predict bioactive compounds in complex matrices, biochromatography has developed rapidly during the past years. Combing the properties of traditional chromatography and biomaterials, biochromatographic analysis possesses features of simultaneous screening, separation and structural identification for active compounds in a complex matrix. According to the process, biochromatography can be divided into offline and online approaches. For offline bioextraction, the biomaterials are used as the extraction phase and followed by routine chromatographic analysis. For online biochromatography, the biomaterials are directly used as the stationary phase for chromatographic analysis. This paper reviews the applications of offline bioextraction followed by chromatographic analysis and online biochromatography, including molecular, cell membrane and cell, and artificial biomembrane chromatography in the screening or predicting active compounds from natural sources.
The magnetic flux density on the surface of magnetic fabric sample was measured by use the special instrument of high-precision Tesla measurement, and the distribution of the magnetic flux density on the surface of magnetic fabric was presented by the methods of information virtualization. The results of the measurement have showed that the values of the magnetic flux density on the surface of magnetic fabric sample, allowing negative value as well as positive value. The magnetic flux density on the surface of magnetic fabric has regional and inhomogeneity of the distribution. The experiment has been conducted on washing and chafing to research the varying characteristics of the magnetic flux density on the surface of magnetic fabric sample. The results of the experiments shows that the magnetic flux density on the surface of magnetic fabric trends to increase firstly in the beginning of washing experiment and then decrease after three times of washing. Generally, fabric loses magnetic after washing 15 times or so. One of the key factors influencing the durability of the magnetic flux density on the surface of magnetic fabric is the content of magnetic fiber in magnetic fabric.
With increasing competition in garment industry, many companies have to improve their efficiency of production and reduce the cost through management, which have become one of the important issues of garment production research. In this paper, the process of garment cutting was divided into several key factors. Combined with the real situation of garment cutting in manufactory, the related influence factors of every factor were also discussed. Based on the study of the process of cutting, the operation processes of garment cutting were investigated and the time consumption of every process was measured. The parameters used for time consumption were proposed. It can be expected that the results of this research can be used to provide reference on the determination of standard time of cutting processes. The results of this research are also great instructive importance for the enterprises to improve the efficiency of garment cutting and the standardization of operation time in order to make a scientific and reasonable working schedule for decreasing production cost and increasing economic benefits.
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