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Copyright of Bulletin of the Chinese Ceramic Society is the property of Bulletin of the Chinese Ceramic Society 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 Science Technology & Engineering is the property of Chinese Society of Technology Economics 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 Irrigation & Drainage is the property of Journal of Irrigation & Drainage 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 Bulletin of the Chinese Ceramic Society is the property of Bulletin of the Chinese Ceramic Society 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 Zhejiang Electric Power is the property of Zhejiang Electric Power 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 Electronic Communication & Computer Science is the property of Omniscient Pte. 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.)

Copyright of Journal of Engineering Management / Gongcheng Guanli Xuebao is the property of Journal of Engineering Management 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 Oilfield Chemistry is the property of Sichuan University, Oilfield Chemistry 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 Sciencepaper is the property of China Sciencepaper 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 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 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 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 China Medical University is the property of Journal of China Medical 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 Science Technology & Engineering is the property of Chinese Society of Technology Economics 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 Science Technology & Engineering is the property of Chinese Society of Technology Economics 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 Bulletin of the Chinese Ceramic Society is the property of Bulletin of the Chinese Ceramic Society 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.)

BACKGROUND: Relevant studies have shown that anterior cruciate ligament rupture may be related to the anatomical morphology of the distal femur and proximal tibia. OBJECTIVE: To investigate the correlation between anterior cruciate ligament rupture and the match between the tibial intercondylar eminence and the femoral intercondylar fossa. METHODS: A total of 74 male soldier patients who were admitted at the 904 Hospital of the Joint Logistics Support Force from January 2016 to March 2021 and suffered unilateral knee injuries or discomfort due to non-contact mechanism were selected. According to X-ray and magnetic resonance imaging findings, they were divided into two groups (n=37 per group): an anterior cruciate ligament rupture group and an intact anterior cruciate ligament group. Width index of the intercondylar fossa was detected using coronal magnetic resonance imaging, and the morphology of the intercondylar fossa was observed using axial magnetic resonance imaging. In X-ray, posteroanterior films were used to detect the width, lateral and medial height of the tibial intercondylar eminence. Ratio of the width of the tibial intercondylar eminence to the width of the intercondylar fossa was used to describe the match between the tibial intercondylar eminence and the femoral intercondylar fossa. RESULTS AND CONCLUSION: There was no significant difference between the two groups in the width of femoral bicondyle, the lateral and medial heights of the tibial intercondylar eminence (P > 0.05). The width of the intercondylar fossa, the width index of the intercondylar fossa, the width of the tibial intercondylar eminence, and the ratio of the width of the tibial intercondylar eminence to the width of the intercondylar fossa in the anterior cruciate ligament rupture group was lower than that in the intact anterior cruciate ligament group (P < 0.05). The A-shaped intercondylar fossa was more common in the anterior cruciate ligament rupture group, and the U-shaped intercondylar fossa was more common in the intact anterior cruciate ligament group. Univariate Logistic regression analysis showed that the width of the intercondylar fossa, the width index of the intercondylar fossa, the morphology of the intercondylar fossa, the parameters of the tibial intercondylar eminence, and the ratio of the width of the tibial intercondylar eminence to the width of the intercondylar fossa were all the influencing factors for anterior cruciate ligament rupture (P < 0.05). Multivariate Logistic regression analysis showed that the ratio of the width of the tibial intercondylar eminence to the width of the intercondylar fossa was an independent risk factor for anterior cruciate ligament rupture (P < 0.05). Receiver operating characteristic curve showed that the ratio of the width of the tibial intercondylar eminence to the width of the intercondylar fossa had a certain predictive value for anterior cruciate ligament rupture. To conclude, the ratio of the width of the tibial intercondylar eminence to the width of the intercondylar fossa is an independent risk factor for anterior cruciate ligament rupture. It has a certain predictive value for anterior cruciate ligament rupture. The worse the match between the tibial intercondylar eminence and the femoral intercondylar fossa is, the higher the risk of anterior cruciate ligament rupture is. [ABSTRACT FROM AUTHOR]

BACKGROUND: The anatomical parameters of the femoral condyle and tibial plateau affect the biomechanics of the knee joint. The matching of the medial femoral condyle and the medial tibial plateau may affect the magnitude of the annular stress on the medial meniscus, and thus affect the posterior root tear of medial meniscus. OBJECTIVE: To evaluate the effect of the match between the medial femoral condyle and the tibial plateau on the tear of the posterior root of the medial meniscus. METHODS: The data of patients who underwent knee MRI examination at the 904 Hospital of the Joint Service Support Force of Chinese PLA due to knee joint pain from January 2016 to January 2020 were retrospectively analyzed. Finally, 52 patients with medial meniscus posterior root tear were selected as observation group; 40 patients without abnormal bone and soft tissue anatomy were selected as control group. The anatomical parameters of the knee joint were measured on MRI: medial femoral condyle anteroposterior diameter, medial tibial plateau anteroposterior diameter, medial femoral condyle transverse diameter, and the transverse diameter of the medial tibial plateau. The lateral diameter ratio of the medial femoral condyle to the medial tibial plateau and the anteroposterior diameter ratio of the medial femoral condyle to the medial tibial plateau were calculated. At the same time, receiver operating characteristic curve analysis was performed to determine the critical value of risk factors for posterior root tear of the medial meniscus. RESULTS AND CONCLUSION: (1) The medial femoral condyle transverse diameter and medial femoral condyle anteroposterior diameter were greater in the observation group than those in the control group (P < 0.05). The lateral diameter ratio of the medial femoral condyle to the medial tibial plateau and the anteroposterior diameter ratio of the medial femoral condyle to the medial tibial plateau were greater in the observation group than those in the control group (P < 0.05). There were no significant differences in the transverse diameter of the medial tibial plateau and medial tibial plateau anteroposterior diameter between the two groups (P > 0.05). (2) Receiver operating characteristic curves demonstrated that the best cut-off value of the transverse diameter ratio of the medial femoral condyle to the medial tibial plateau was 0.85, the sensitivity was 57.69%, and the specificity was 97.50%; area under the curve was 0.815. The best cut-off value of the anteroposterior diameter ratio of the medial femoral condyle to the medial tibial plateau was 1.29, and the sensitivity was 61.54%; the specificity was 95.00%; area under the curve was 0.710. (3) These findings suggest that the lateral diameter ratio of the medial femoral condyle to the medial tibial plateau greater than 0.85 and the anteroposterior diameter ratio of the medial femoral condyle to the medial tibial plateau greater than 1.29 may be an important risk factor for the occurrence of posterior root tear of the medial meniscus. The method of measuring the lateral diameter ratio and the anteroposterior diameter ratio of the medial condyle to the plateau in coronal and sagittal MRI views of knee joint has a high sensitivity and detection rate for the diagnosis of posterior root tears of the medial meniscus. . [ABSTRACT FROM AUTHOR]

Copyright of Experimental Technology & Management is the property of Experimental Technology & Management 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.)

房地产经济是国民经济的重要组成部分，具有推动社会经济发展、促进国民经济增长的作用。房地产经 济的发展常因市场环境、国家政策等的变化而出现波动，进而影响国民经济。基于此，本文以房地产经济波动的影响 因素为主要研究对象，简要分析了这些因素对房地产及相关行业的影响，进而就如何推动房地产经济发展，提出深入 分析国家政策、构建信息化管理平台等建议，以期为业界人士提供参考。 [ABSTRACT FROM AUTHOR]

Copyright of Urban Architecture & Development is the property of Omniscient Pte. 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.)

Copyright of International Architecture is the property of Omniscient Pte. 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.)

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: Partial meniscectomy can effectively reduce the mechanical symptoms of degenerative medial meniscus posterior root tear, but it cannot prevent the progression of knee osteoarthritis, which may be related to the effect of lower limb force line on prognosis. OBJECTIVE: To investigate the correlation between the progression of knee osteoarthritis and the hip-knee-ankle angle in patients with degenerative medial meniscus posterior root tears after partial meniscectomy. METHODS: The medical records of 138 patients with degenerative medial meniscus posterior root tears treated by partial meniscectomy in 904 Hospital of the Joint Service Support Force of Chinese PLA from January to December 2014 were analyzed retrospectively. The average follow-up was (5.53±0.58) years. Patients were divided into group A (hip-knee-ankle angle > 176.2°, n=77) and group B (hip-knee-ankle angle ≤ 176.2°, n=61) according to the best truncation value of hip-knee-ankle angle before operation. Receiver operator characteristic (ROC) curve was used to analyze the predictive value of preoperative hipknee-ankle angle to postoperative American special surgery hospital score HSS. Spearman correlation analysis was used to explore the correlation between preoperative hip-knee-ankle angle and postoperative final HSS value. The width of knee medial joint space and Kaglan-Lawrence classification were compared between the two groups. The trial was approved by the Ethics Committee of 904 Hospital of the Joint Service Support Force of Chinese PLA (approval No. 2018- 10-002). RESULTS AND CONCLUSION: (1) The ROC curve showed that the preoperative hip-knee-ankle angle had a certain predictive value to the postoperative American special surgery hospital score HSS, and the area under the curve was 0.75. (2) Univariate Logistics regression analysis results showed that hip-kneeankle angle and preoperative course of disease were influencing factors for postoperative HSS score. Multivariate Logistics regression analysis results showed that preoperative hip-knee-ankle angle was an independent risk factor for HSS score (P < 0.01), while body mass index and preoperative course of disease did not affect the correlation between hip-knee-ankle angle and HSS score. (3) Spearman correlation analysis results showed that the preoperative hip-kneeankle angle was positively correlated with postoperative HSS score (r=0.472, P < 0.01). The greater the preoperative hip-knee-ankle angle and the higher the preoperative HSS score, the better the prognosis. (4) The width of postoperative joint space in group A was larger than that in group B (P < 0.01), and the degree of Kaglan-Lawrence grade in group A was lower than that in group B (P < 0.05), indicating progression of postoperative osteoarthritis in group A was slower than that in group B. (5) The results showed that for patients with degenerative medial meniscus posterior root tears, partial meniscectomy was not suitable if the hip-knee-ankle angle was ≤ 176.2°. Partial meniscectomy could be performed if the hip-knee-ankle angle was > 176.2°, but relevant risk factors should be carefully considered. [ABSTRACT FROM AUTHOR]

Copyright of Bulletin of the Chinese Ceramic Society is the property of Bulletin of the Chinese Ceramic Society 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 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 Nanjing Agricultural University / Nanjuing Nongye Daxue Xuebao is the property of Journal of Nanjing Agricultural University 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.)