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Aiming at the relay system of MABC, this paper studied the optimization of resource allocation strategy, and combined the power allocation problem with relay selection problem. Based on this, the paper proposed a multi-relay system resource allocation strategy ( IS-MABC-OPOR) with interference MABC model. Considering the influence of interference signals on the transmission performance of two-way relay system, and aiming at maximizing the channel capacity of communication links, optimal power allocation and optimal relay selection for each node on the communication link used the Lagrangian method, and gave the mathematical expression of resource allocation under the maximum channel capacity of the communication link. The simulation results show that the channel capacity of the link is constrained by the relay node location and the total power of the link. Compared with the equal power allocation scheme(EPA), the random power allocation scheme(RPA ) and the channel gain of the interference signal on the basis of the proposed scheme, the IS-MABC-OPOR scheme effectively increases the channel capacity, thereby realizing resources to meet higher-speed service transmission requirements. [ABSTRACT FROM AUTHOR]

Copyright of Shipin Kexue/ Food Science is the property of Food Science Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Application Research of Computers / Jisuanji Yingyong Yanjiu is the property of Application Research of Computers Edition and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

During rice-milling process, rice bran is produced as one kind of byproduct with high contents of polyphenols. Although there is a huge amount of rice bran in China, most of it is used to feed animals. Therefore, it is inevitable to fully explore the additional value of rice bran for the economic benefit of rice processing industry. Rice bran can be used for extraction of polyphenols. Conventional solvents are methanol, acetone and ethanol, which exhibit some disadvantages. To overcome these disadvantages, we need to find a suitable solvent to replace conventional solvents. Glycerol is one kind of colorless, odorless, viscous liquid, which is sweet-tasting and non-toxic. It is widely applied in the food and pharmaceutical industry. Glycerol might be a potential alternative for green extraction of polyphenols from rice bran. Thus, in our research, a green extraction process of polyphenols from rice bran using glycerol was studied. Four individual factors including extraction temperature, volume fraction of glycerol, liquid-to-solid ratio and extraction time were chosen, and single-factor experiments combined with response surface methodology (RSM) were applied for optimization of the extraction process. The relationship between extraction efficiency of glycerol and its viscosity, the physical property, was analyzed and a UPLC-Triple-TOF/MS method was also conducted for identification of polyphenols. Results showed the order of independent factors affecting the yield of polyphenols was as follows: extraction temperature> volume fraction of glycerol>liquid-to-solid ratio. The ANOVA analysis revealed that independent factors (extraction temperature, volume fraction of glycerol and liquid-to-solid ratio), interaction effect (extraction temperature and volume fraction of glycerol) and their quadratic terms significantly influenced the yield of polyphenols (P<0.05). The optimum conditions were extraction temperature at 67 °C, volume fraction of glycerol at 19 %, liquid-to-solid ratio at 33 mL/g and extraction time fixed at 80 min. Under the optimal conditions, the maximum yield of polyphenols was 700.35 mg/100 g. There is a significantly negative correlation between extraction efficiency of glycerol and its viscosity. During extraction processes, the viscosity of glycerol changed as extraction conditions changed. As the viscosity increased there was a significant decrease in yield of polyphenols, with significant negative correlation coefficient value of -0.878 9 (P<0.01). Under the optimal conditions, there were thirteen phenolic compounds identified in the glycerol extract according to UPLC-Triple-TOF/MS analysis. The quantification of all the six phenolic acids was conducted by UPLC. The contents of phenolic acids were as follows: 4-hydroxybenzoic acid (48.53 μg/g), vanillic acid (69.64 μg/g), syringic acid (33.63 μg/g), 4-coumaric acid (361.18 μg/g), ferulic acid (392.17 μg/g), and salicylic acid (34.67 μg/g), which significantly enhanced the value of rice bran. [ABSTRACT FROM AUTHOR]