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This study evaluated the effects of cinnamon extract immersion treatment on the quality improvement of prefabricated small yellow croaker during refrigeration. The changes in total volatile base nitrogen (TVB-N) content, total viable count (TVC), K value, sensory evaluation, pH, texture, color, thiobarbituric acid (TBA) content, total sulfhydryl content, sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE), and muscle tissue microstructure of prefabricated small yellow croaker treated with cinnamon extract immersion group (CE) and distilled water immersion group (CK) during storage at 4 ℃ for 14 days were investigated. Results revealed that, the TVB-N content of the CK group reached 31.85 mg/100 g at day 12, which exceeded the limit requirement for qualified products, while the CE group did not exceed 30 mg/100 g at day 14. At the 10th d, the TVC and K values of the CK group were 7.65 lg CFU/g and 59.82%, respectively, which exceeded the qualified aquatic product limit (7.00 lg CFU/g). At this time, the TVC and K values of the CE group were 6.42 lg CFU/g and 40.65%, respectively, which were still in compliance with the qualified aquatic product limit, and effectively delayed the increase in TVC and K values. At the 14 d, the TBA content and pH values of the CE group were lower than those of the CK group, and sensory score, total sulfhydryl content, hardness, adhesiveness, and chewiness were better than those of the CK group. However, it did not significantly affect its elasticity and gumminess (P>0.05), while maintaining the integrity of the muscle tissue structure. Consequently, cinnamon extract immersion treatment improved the freshness, texture, sensory properties, lipid oxidation, as well as protein oxidation and degradation of prefabricated small yellow croaker during refrigeration, thereby retarding the deterioration of quality. This research provides technical and data support for quality regulation, safety assurance, and shelf-life extension of prefabricated small yellow croaker.

To reduce the ash content of bone collagen peptide and improve the quality of bone collagen peptide products. In this paper, the method of nanofiltration desalination was used to remove ash. The process parameters for nanofiltration desalination of bone collagen peptides were optimized through design response tests. The changes in physical and chemical indicators, amino acid content, molecular weight distribution, content of various elements, and sensory scores of samples treated with nanofiltration membranes were analyzed. Results showed that, the optimal desalination process conditions were sample concentration of 5%, cycle times of 7 times and pressure of 0.5 MPa. Under this condition, the desalination rate was 65.89%±1.25%. After nanofiltration membrane treatment, the quality of the sample was significantly improved, but the amino acid content did not change much. Through the measurement of molecular weight distribution, it was found that nanofiltration desalination had little impact on the change of molecular weight distribution, the components with molecular weight less than 3000 Da accounted for 97%, which was in line with the provisions of the national food safety standard GB 31645-2018 bone collagen peptides. ICP-MS was used to analyze the changes in the content of various elements before and after desalination, and it was found that the content of various elements in the sample decreased to varying degrees, the content of Na, K, P, Mg, Ca decreased significantly (P

A collision property analysis of the GMR-2 cipher used in the satellite phone was presented.By using the F-component as a bridge,the link between the difference of the key byte and the collision of the output ofFas well as the link between the collision of the output of F and the collision of keystream byte were analyzed,which finally revealed the relationship between the difference of the original key byte and the keystream collision.The theoretical analysis showed that for a random frame number,a special chosen key pair could lead to a keystream collision with a high probability,when the key pair has only one byte difference in which the most significant 4 bit of the difference was equal to the last significant 4 bit.The experimental result shows that the keystream collision probability is 2−8.248,which is far higher than the ideal collision probability 2−120.This proves once again,that there exists serious potential security hazards in the GMR-2 cipher.

Background and objective Multidrug resistance (MDR) is the main cause of chemotherapeutic failure in lung cancer, and vinorelbine (NVB) is one of the most efficient drugs that threaten non-small cell lung cancer (NSCLC). The current study aims to establish tumor xenografts and investigate the molecular mechanisms involved in the resistance of NVB in lung adenocarcinoma. Methods Nude mice were implanted with Anip973 and Anip973/NVB, and tumor-bearing mice were divided into the Anip973 treatment, Anip973 control, Anip973/NVB treatment, and Anip973/NVB control groups, respectively. The current study observes tumor growth, draws growth curves, and calculates inhibitory rates. The morphological changes in cell tumor were observed through the immunohistochemical method using an electron microscope to detect the expressions of MRP3 and Bcl-2 and to investigate the molecular mechanisms of Anip973/NVB cells. Results The tumor inhibitory rates of the Anip973 and Anip973/NVB cells treated with NVB were 60.00% and 4.65%, respectively, compared with the control group. The growth inhibition in the Anip973/NVB cell transplantation tumor had no significant difference. Apoptosis was observed using TEM when the Anip973 transplantation tumor was treated with NVB. On the other hand, no apoptosis was found in the Anip973/NVB transplantation tumor using TEM. Immunohistochemical staining (SP) shows the positive expressions of Bcl-2 and MRP3 proteins in Anip973/NVB transplantation tumor, which were observed to be higher than those in the Anip973 transplantation tumor. Conclusion The overexpression of Bcl-2 and MRP3 might be one of the major mechanisms of the MDR of Anip973/NVB.

Considering the fluid flow non-darcy characteristics in fracture-vug carbonate reservoirs, a new multi-scale conduit flow model production prediction method for fracture-vug carbonate reservoirs was presented using image segmentation technique of electric imaging logging data. Firstly, based on Hagen-Poiseuille's law of incompressible fluid flow and the different cross-sectional areas in single fractures and vugs in carbonate reservoirs, a multi-scale conduit flow model for fracture-vug carbonate reservoir was established, and a multi-scale conduit radial fluid flow equation was deduced. Then, conduit flow production index was introduced. The conduit flow production index was calculated using fracture-vug area extracted from the result of electrical image segmentation. Finally, production prediction of fracture-vug carbonate reservoir was realized by using electric imaging logging data. The method has been applied to Ordovician fracture-vug carbonate reservoirs in the Tabei area, and the predicted results are in good agreement with the oil testing data. Key words: Tarim Basin, Ordovician, carbonate, fracture-vug carbonate reservoir, electric imaging logging, conduit flow model, production index, production prediction

In recent years,network function virtualization (NFV) is arousing concern widely from both academia and industry due to its flexible deployment and low cost.However,the performance bottleneck becomes increasingly distinctive and hinders the progress of NFV technology.The major factors were studied which could seriously affect the performance of NFV data plane.Firstly,an analysis was conducted on the causes for various kinds of performance overheads.Then,the optimization solutions were summarized to mitigate these overheads.Finally,a brief introduction was made on two types of architecture,which could significantly improve the performance of NFV data plane.