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Copyright of Journal of Chongqing University of Posts & Telecommunications (Natural Science Edition) is the property of Chongqing University of Posts & Telecommunications 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 Pathophysiology is the property of Jinan University, School of Medicine 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 Rolling Stock (1002-7602) is the property of Rolling Stock Editorial Office 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 Isotopes is the property of Journal of Isotopes Editorial Office 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 Cancer Research on Prevention & Treatment is the property of Cancer Research on Prevention & Treatment Editorial Office 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 Shandong Medical Journal is the property of Shandong Medical Health Newspapers 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 Automobile Technology & Material is the property of Automobile Technology & Material Editorial Office 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 Practical Medicine / Shiyong Yixue Zazhi is the property of Journal of Practical Medicine Editorial Office 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.)

In the late Qing Dynasty, Chinese people's cognition of making tea by machine went through a process from simple to profound, and their reception also increased from low to high. In the late 1880s, the crisis in the Chinese tea trade emerged, and Chinese people began to probe into making tea by machine. At this time, Chinese people had a shallow understanding of this new production method and had divergent opinions. At the end of the 19th century, the introduction by newspapers and media deepened Chinese people's cognition, and the advocacy of making tea by machine became an important part of the thought of Chinese tea industry reform. The government and merchants tried to practice, but many people had doubts about it. In the early 20th century, during the period of the new policy in the late Qing Dynasty, the investigation of foreign countries further enhanced Chinese people's cognition of making tea by machine, which was seen as a necessary means to revitalize the tea industry and retrieving interests. Although for various reasons, the practice of making tea by machine in the late Qing Dynasty was limited, the cognition and acceptance process of Chinese people towards it reflected their dual attitude towards new foreign technologies, which were both open and cautious, laying the foundation for the modernization development of China's tea industry. [ABSTRACT FROM AUTHOR]

Copyright of Progress in Modern Biomedicine is the property of Publishing House of Progress in Modern Biomedicine 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 Hubei Open Vocational College is the property of Journal of Hubei Open Vocational College Editorial Office 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 Cancer Research on Prevention & Treatment is the property of Cancer Research on Prevention & Treatment Editorial Office 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 Cancer Research on Prevention & Treatment is the property of Cancer Research on Prevention & Treatment Editorial Office 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 China Tropical Medicine is the property of China Tropical Medicine Editorial Office 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 Xinyang Normal University Natural Science Edition is the property of Journal of Xinyang Normal University Editorial Office 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 Practical Medicine / Shiyong Yixue Zazhi is the property of Journal of Practical Medicine Editorial Office 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 Practical Medicine / Shiyong Yixue Zazhi is the property of Journal of Practical Medicine Editorial Office 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 Engineering Geology / Gongcheng Dizhi Xuebao is the property of Journal of Engineering Geology 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 Beijing University of Traditional Chinese Medicine is the property of Journal of Beijing University of Traditional Chinese Medicine 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 investigate the effect of scalp nerve block (SNB) combined with dexmedeto- midine (Dex) injection on postoperative recovery quality in patients undergoing supratentorial tumor resection. Methods Based on factorial trail design, 160 patients who were scheduled for supratentorial tumor resection were randomly divided into four groups: control group (C group C), scalp nerve block group (SNB group), dexmedetomidine group (Dex group) and scalp nerve block combined with dexmedetomidine group (SNB+Dex group). Then, the 40-item Quality of Recovery Score (QoR40 score) was used to evaluate the recovery quality 1 day before operation (D0), and 1, 3 and 7 d after operation (D1, D3 and D7). The serum concentration of markers of nerve injury [S100β protein, glial fibrillary acid protein (GFAP) ] was detected right and 24 h after operation. The two groups were compared as well in terms of the score by the numerical rating scale (NRS) 24 h and 48 h after operation, frequency of analgesia, incidence of adverse events, use of vasoactive agents, incidence of coughing and agitation during extubation, nausea and vomiting (PONV) within 48 h after operation as well as the postoperative hospitalization stay. Results In D1 and D3, the interaction between SNB and Dex on total score of QoR-40 scale was significant (P < 0.05), but the interaction between the two factors was not significantly at D7 (P > 0.05), and their main effects were significant (P < 0.05). As for serum S100β and GFAP concentrations, the Dex main effect was significant at D1 (P < 0.05), and the SNB main effect and the two-factor interaction were not significant (P > 0.05). The incidence of intraoperative hypertension, tachycardia, utilization rate of vasoactive drugs, coughing and agitation during extubation in SNB+Dex group were significantly lower than those in C group (P < 0.05). The frequency of postoperative analgesic drugs in SNB group and SNB +Dex group was significantly lower than that in C group (P < 0.05). The postoperative NRS score at 48 h of the other three groups was significantly lower than that of C group (P < 0.05). There was no significant difference in the incidence of PONV and the length of hospitalization stay during 48 h after surgery (P > 0.05). Conclusion SNB combined with Dex injection can improve the early postoperative QoR-40 score in patients undergoing supratentorial tumor resection, reduce the serum concentration of nerve injury markers, reduce the incidence of perioperative adverse events, alleviate postoperative pain, lower the use of analgesic drugs and improve the early postoperative recovery. [ABSTRACT FROM AUTHOR]

Copyright of Chemistry & Industry of Forest Products is the property of Chemistry & Industry of Forest Products 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 Journal of Xinyang Normal University Natural Science Edition is the property of Journal of Xinyang Normal University Editorial Office 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 Food Safety & Quality is the property of Journal of Food Safety & Quality 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 Journal of Food Safety & Quality is the property of Journal of Food Safety & Quality 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.)

Objective To observe whether region cerebral blood flow （rCBF） is altered in brain before surgery in postoperative cognitive dysfunction（POCD）patients，and whether there is a correlation with the score of neuropsychiatric scale in elderly patients. Methods A total of 83 elderly（≥65 years） patients scheduled for spinal stenosis surgery during 2017-2020 were enrolled in the study. All the participants accomplished a battery of neuropsychological tests by well-trained neuropsychologist 1 day before and 1 week after surgery. Pulsed arterial spin-labeling（ASL） MRI was scanned at least one day before surgery. POCD was defined as≥2 neuropsychological test Z-scores>1.96. The patients were devided into POCD and NPOCD group. The ASLtbx toolkit and SPM8 were applied to preprocess and correct the images，which were then standardized to the MNI brain template space to obtain standardized cerebral perfusion images.ALS in the two groups were compared. Results POCD was identified in 11 of 50 patients（22%）. The CBF of the right middle cingulate gyrus in POCD group was lower than that in NPOCD group（P<0.001）. The correlation coefficient r of CBF with Z score of JLOT，BVMT-D and DST-B was -0.631，-0.480 and -0.533 （P<0.05），respectively，which was statistically significant. Conclusion Patients' preoperative MRI cingulate gyrus local CBF may contribute to the prediction of early POCD in elderly patients，and there is a good correlation between cingulate gyrus local CBF and neuropsychiatric scales. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Modern Medicine & Health is the property of Journal of Modern Medicine & Health 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 Applied Ecology / Yingyong Shengtai Xuebao is the property of Chinese Journal of Applied Ecology 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 Applied Ecology / Yingyong Shengtai Xuebao is the property of Chinese Journal of Applied Ecology 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.)

代谢综合征是一种复杂的慢性非传染性疾病,是脑梗死、心血管疾病等的重要危险因素,近年来,代谢綜合在发 病车连年升高并出現低給化是势,该文就代谢综合征的饮食疗法的种及其优缺点进行了综进。 [ABSTRACT FROM AUTHOR]

Copyright of Hydrogeology & Engineering Geology / Shuiwendizhi Gongchengdizhi is the property of Hydrogeology & Engineering Geology Editorial Office 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 China Pulp & Paper is the property of China Pulp & Paper Magazines Publisher 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.)

To investigate the correlation of the occurrence and development of cervical cancer with the disturbance of vaginal flora and the expression of programmed cell death receptor-1 ( PD- 1 l molecules on the surface of T cells in order to provide new direction for PD-1 immune checkpoint blocking therapy. Methods Twenty-four female SPF Kunming mice were randomly divided into two groups: normal control group ( CON J (n = 12 l and cervical cancer model group ( CCM) ( n = 12). We established the mouse cervical cancer Ul4 cell subcutaneous transplantation tumor model. After 21 days of rearing under the same conditions, vaginal secretions and blood samples of mice were collected. 16S rRNA gene amplification and sequencing technology were used to analyze the vaginal flora in the two groups. Flow cytometry was used to detect the subsets of Tlymphocytes in the peripheral blood of mice and the expression of PD-1 on its surface . Results Beta diversity analysis showed that the vaginal flora of the CON group and the CCM group were significantly different in species composition a nd relative abundance of each species. The dominant bacteria in the CON group were Lactobacillus. while the figure in the CCM group converted to Pasteurella and Helicobacter. The mean expression of PD-1 on the surface of T cells in mice in the CCM group was 12 . 78% . which was significantly higher than that in the CON group Cl0.45% l ( P·<0. 05l. The mean of the total number of T cells ( CD3+ T cells l and the number of CD8+ T cells in the CCM group were 38 .78% and 11. 98%. respectively. which were significantly lower than those in the CON group (51. 37% and 20 . 08% l ( P·< O. 05 l. Conclusion Cervical cancer can cause vagina l flora disorder . There may be a certain correlation between the vaginal flora disorder and the high expression of PD-1 on the surface of T cells, suggesting that there may be a new regulatory mechanism for the immune escape in cervical cancer . [ABSTRACT FROM AUTHOR]

Copyright of Journal of Jiangsu University (Natural Science Edition) / Jiangsu Daxue Xuebao (Ziran Kexue Ban) is the property of Editorial Department of Journal of Jiangsu University (Natural Science 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.)

Copyright of Chinese Journal of Liquid Crystal & Displays is the property of Chinese Journal of Liquid Crystal & Displays 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 Mental Health Journal / Zhongguo Xinli Weisheng Zazhi is the property of Chinese Mental Health Journal 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 Engineering Geology / Gongcheng Dizhi Xuebao is the property of Journal of Engineering Geology 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.)