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Objective: To explore the application method and effect of ultrasound-guided epidural block in elderly hip replacement surgery. Methods: From June 2017 to May 2020, 112 cases of elderly patients who underwent hip replacement surgery in our hospital were selected as the research object, and the patients were divided into study group and control group of 56 cases in each groups accorded to the random number table method. The study group was given ultrasound-guided epidural block, and the control group was given traditional intravenous continuous analgesia. The two groups were given general anesthesia induction and maintenance, and the analgesic effects and patient's postoperative recovery were recorded. Results: There were no significant difference in gender, age, anesthesia time, operation time and intraoperative bleeding compared between the two groups (P>0.05). The postoperative hospital stay in the study group were significantly shorter than that in the control group (P<0.05). The visual analogue scale/score (VAS) scores of pain in the two groups at 1 d, 3 d and 7 d after surgery were significantly lower than those at 1d before operation, and the study groups were lower than the control group(P<0.05). The hip joint mobility of the study group at 1 d, 3 d and 7 d after surgery were significantly higher than that of the control group (P<0.05). The contents of Substance P (SP) and Prostaglandin E2 (Prostaglandin E2, PGE2) in the two groups at 1 d, 3 d and 7 d after surgery were significantly higher than those at 1 d before operation, and the study groups were lower than the control group(P<0.05). Conclusion: The application of ultrasound-guided epidural block in elderly hip replacement surgery can inhibit the release of serum SP and PGE2, can relieve postoperative pain, promote the recovery of hip function, and shorten the recovery time of patient [ABSTRACT FROM AUTHOR]

Copyright of Journal of Henan University of Technology Natural Science Edition is the property of Henan University of Technology Journal 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 Guangxi Normal University - Natural Science Edition is the property of Gai Kan Bian Wei Hui 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 China University of Petroleum is the property of China University of Petroleum 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.)

bjective To investigate HBV RNA level in patients with HBV-related hepatocellular carcinoma after long-term antiviral therapy and its clinical significance. Methods A total of 60 patients with HBV-related hepatocellular carcinoma who were admitted to Tianjin Second People's Hospital from June 2019 to August 2020 were enrolled in this study. These patients received antiviral therapy with nucleos(t)ide analogues (NAs) for at least two years, and high-sensitivity HBV DNA detection showed a HBV RNA level of < 20 IU/mL at least twice at an interval of 3 months. Liver function, HBV serum markers, and HBV RNA level were measured for all patients. The Kruskal-Wallis H test was used for comparison between multiple groups, and the Wilcoxon rank-sum test was used for comparison between two groups; a Pearson correlation analysis was used to investigate the influencing factors for HBV RNA. Results Among the 60 patients with HBV-related hepatocellualr carcinoma who received long-term antiviral treatment, 9 (15%) tested positive for HBV RNA. According to the level of alpha-fetoprotein (AFP), the patients were divided into AFP positive group and AFP negative group, and there was no significant difference in HBV RNA level between the two groups [0(0-3.57) vs 0(0-2.00), Z=-1.474, P=0.141). According to Barcelona Clinic Liver Cancer (BCLC) stage, they were divided into BCLC stage A group and BCLC stage B+C+D group, and there was no significant difference in HBV RNA level between the two groups [0(0-2.0) vs 0(0-2.0), Z=-0.607, P=0.544]. According to HBeAg level, the patients were divided into HBeAg positive group and HBeAg negative group, and there was a significant difference in HBV RNA level between the two groups [2.99(0-4.80) vs 0(0-0.50), Z=-3.400, P=0.001]. According to the titer of HBsAg, they were divided into HBsAg≤100 IU/mL group, 100 IU/mL < HBsAg < 1500 IU/mL group, and HBsAg ≥1500 IU/mL group, and there was a significant difference in HBV RNA level between the three groups [0(0-0.0) vs 0(0-0.20) vs 2.00(0.0-4.54), H=-7.899, P=0.019]. A Pearson correlation analysis was performed for age, alanine aminotransferase, aspartate aminotransferase, gamma-glutamyl transpeptidase, alkaline phosphatase, alpha-fetoprotein, HBsAg, and HBeAg, and the results showed that HBsAg level was correlated with HBV RNA quantification (r=0.292, P < 0.05). Conclusion In patients with HBV-related hepatocellualr carcinoma receiving long-term antiviral therapy with NAs, HBV RNA can still be detected after HBV DNA is lower than the lower limit of detection. HBsAg titer may be correlated with serum HBV RNA level. [ABSTRACT FROM AUTHOR]

g-C3N4(CN(32))was prepared by mixing urea and melamine, and then a series of Ag3VO4/CN(32) composites were successfully synthesized by chemical precipitation method. The crystalline and composition, morphology, functional groups and optical absorption performance of the synthesized samples were characterized by XRD, SEM, FT-IR and UV-Vis. Their photocatalytic performance in visible light was investigated through the experiment of microcystins（MC-LR） degradation. The results showed that Ag3VO4 was successfully loaded on the surface of CN(32), and the light absorption intensity of the composites was significantly improved compared with that of CN（32）. The photocatalytic activity of Ag3VO4/CN(32) for MC-LR degradation was optimized. When the mass percentage of Ag3VO4 was 20% in the Ag3VO4/CN(32)composite, the degradation rate reached 85.4% within 100 min, which was 10 times higher than that of CN(32). Furthermore, MC-LR degradation by Ag3VO4/CN(32) showed a good compliance with the pseudo-first-order kinetic model. The enhanced photocatalytic performance of Ag3VO4/CN(32)composite was ascribed to the highly separation rate of electrons and holes. [ABSTRACT FROM AUTHOR]

Copyright of Chinese Journal of Computational Mechanics / Jisuan Lixue Xuebao is the property of Chinese Journal of Computational Mechanics Editorial Office, Dalian University of Technology 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 Henan Agricultural Sciences is the property of Editorial Board of Journal of Henan Agricultural Sciences 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.)

Copper oxide nanowires were synthesized on copper foil substrate by anodic oxidation method followed by a simple annealing process. The lithium-ion battery without binder was prepared by using it as anode material. The effect of the anodizing time on the morphology and electrochemical properties of the materials was studied. At the rate of 1 C, the CuO nanowires array with anodizing time of 1000 s showed the highest first discharge specific capacity of 1172 mAh/g and the reversible specific capacity of 594 mAh/g. The reversible specific capacity after 500 circles was 607.6 mAh/g, and the reversible capacity retention rate was 102.3%. It proves that the cross-linked 3D CuO nanowire network could provide a stable structure for lithium ion insertion and removal, which could effectively solve the volume expansion problem of copper oxide materials as anode materials for lithium ion batteries, and exhibit excellent rate performance and cycle life. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Engineering for Thermal Energy & Power / Reneng Dongli Gongcheng is the property of Journal of Engineering for Thermal Energy & Power 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 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 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 Henan Agricultural Sciences is the property of Editorial Board of Journal of Henan Agricultural Sciences 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 China University of Petroleum is the property of China University of Petroleum 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 Rare Metal Materials & Engineering is the property of Northwest Institute for Nonferrous Metal Research 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 Plastics / Zhongguo Suliao is the property of Journal Office of CHINA PLASTICS 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 Natural Gas Industry is the property of Natural Gas Industry Journal Agency 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 Special Oil & Gas Reservoirs is the property of Special Oil & Gas Reservoirs 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.)

Myocardial Fibrosis（MF） seriously endangers human health. Extracorporeal Shock Wave Therapy can lead to a variety of biochemical functions, by promoting angiogenesis factor and its receptor in vivo expression， promoting the establishment of angiogenesis and collateral circulation in ischemic tissue，inhibiting the oxidative stress in ischemic tissue, and relieving the ventricular remodeling process after acute myocardial infarction （AMI）， and by reducing the fiber cell number to influence the myocardial fibrosis after myocardial infarction. Extracorporeal Shock Wave Therapy can achieve the aim of relieving cardiac remodeling. A large number of previous studies has reported that CSWT showed good tolerance in CAD patients . In the process of shock wave treatment and after treatment, patients had no aggravated angina symptoms, no complications such as worsening heart failure or myocardial injury, and no thoracotomy or interventional surgery is required. Extracorporeal Shock Wave Therapy is easy to repeat and easy for the patient to accept. CSWT has been confirmed as a noninvasive, safe, operatable, effective and repeatable repeat newtherapy to alleviate myocardial fibrosis. [ABSTRACT FROM AUTHOR]