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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 Transactions of the Chinese Society of Agricultural Engineering is the property of Chinese Society of Agricultural Engineering 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 Chinese Journal of Oncology is the property of Chinese Journal of Oncology / Zhonghua Zhongliu Zazhi 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 Chinese Journal of Pesticide Science / Nongyaoxue Xuebao is the property of Chinese Journal of Pesticide Science 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 Journal of Computer Engineering & Applications is the property of Beijing Journal of Computer Engineering & Applications Journal Co Ltd. 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.)

BACKGROUND: Decellularized tissue scaffolds have been used in vascular, cardiovascular, skin, pulmonary, and urology fields, and have gradually become good candidates for esophageal tissue engineering. OBJECTIVE: To investigate the feasibility of tea polyphenol-treated bovine pericardial decellularized tissue scaffolds as artificial esophagus materials. METHODS: The bovine pericardium was decellularized and made into tissue scaffolds, which were treated with PBS, glutaraldehyde or tea polyphenol. Totally 16 SD rats were randomly assigned to four groups (n=4). In group A, PBS-treated decellularized bovine pericardial tissue scaffolds were sutured to esophageal defects. In group B, glutaraldehyde-treated decellularized bovine pericardial tissue scaffolds were sutured to esophageal defects. In group C, tea polyphenol-treated decellularized bovine pericardial tissue scaffolds were sutured to esophageal defects. In group D, the abdomen was sutured after exposing the esophagus. At 4 weeks after the operation, the changes in body weight, anastomotic stoma, hematoxylin-eosin staining and actin α antibody immunohistochemical staining at the repaired site were observed. RESULTS AND CONCLUSION: (1) The general observation showed that in group A, the esophageal defect site had granulation hyperplasia; the stenosis was not obvious; and part of the esophageal patch material fell off. In group B, one patient had anastomotic leakage after operation. The granulation tissue in the esophageal defect site proliferated obviously and the large patch tissue protruded into the esophageal cavity. In group C, granulation tissue hyperplasia was found at the esophageal defect site; the defect site was supported by the artificial esophagus without obvious stenosis. (2) There was no significant difference in body weight between groups A, B and C and group D at 4 weeks after operation (P > 0.05). (3) Hematoxylin-eosin staining demonstrated that in group A, granulation hyperplasia was seen at the esophageal defect site; a large number of inflammatory cells infiltrated; and the newly formed esophageal mucosa was partially covered with the patch tissue. In group B, the granulation tissue at the esophageal defect site had obvious proliferation, accompanied by infiltration of a large number of inflammatory cells. Inflammatory cell infiltration could be seen around the patch, and the esophageal mucosa was not covered with the patch tissue. In group C, granulation tissue proliferated at the esophageal defect site, and the infiltration of inflammatory cells was mild. Numerous new cells were seen in the artificial esophageal patch. The tissue structure of the original patch was unclear, and the esophageal mucosa completely covered the defect tissue. (4) Immunohistochemical staining exhibited that no actin α-positive cells were found in groups A and B, while blue-stained nuclei were seen, the original patch structure was loose, and actin α-specifically stained neovascular tissue was visible in group C. (5) It is concluded that the tea polyphenol-treated bovine pericardium decellularized tissue scaffold can be served as a good substitute for artificial esophagus. [ABSTRACT FROM AUTHOR]

Copyright of Chinese Journal of Oncology is the property of Chinese Journal of Oncology / Zhonghua Zhongliu Zazhi 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 Journal of Agro-Environment Science is the property of Journal of Agro-Environment Science Editorial Board 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.)

Objective To explore the role of quality control circle（QCC）in improving the quality of four-handed operation of dental medical staff and thus shortening the waiting time of patients. Methods We established a QCC and standardized the four-hand operation process of the dental medical staff. By investigating the current situation，we analyzed the reasons and used the QCC to develop and implement reasonable countermeasures. Results Under the quality control circle activities，the uncoordinated rate of four-handed operation decreased from 80.95% to 61.91%.The waiting time of patients decreased from 42 min to 21 min，and the effective improvement rate was 50%. Conclusion The quality control circle activities is helpful to improve the quality of the four-hand operation of the dental medical staff，thus shortening the waiting time of patients，and improving the efficiency of work and the satisfaction of patients. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Agro-Environment Science is the property of Journal of Agro-Environment Science Editorial Board 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 Chinese Journal of Oncology is the property of Chinese Journal of Oncology / Zhonghua Zhongliu Zazhi 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.)

A pre-established test and evaluation system will benefit the development of unmanned ground vehicles. A design method is proposed for a scientific and comprehensive test and evaluation system for unmanned ground vehicles. The test and evaluation system includes the test contents, the test environment, the test methods and the evaluation methods. A hierarchical design approach is used to design the test content stage by stage, moving from simplicity to complexity and from individual modules to the entire vehicle. The hierarchical test environment is established according to the levels of test content. The test method based on multilevel platforms and sensors is put forward to ensure the test accuracy. The fuzzy extension analytic hierarchy process (fuzzy-EAHP) method is used for the comprehensive evaluation, which can quantitatively evaluate the individual module and the overall technical performance of unmanned ground vehicles. The proposed test and evaluation system has been successfully applied to the test and evaluation of unmanned ground vehicle. [ABSTRACT FROM AUTHOR]