Search

In the viscoelastic-plastic rock mass of the hydraulic tunnel buried deep in high ground temperature, due to the influence of high temperature environment and tunnel cooling, certain temperature stress is generated in the surrounding rock. Therefore, when studying the analytical solution of surrounding rock of high geothermal tunnel, it is necessary to study the influence of temperature stress on the plastic zone and stress strain of the surrounding rock. Based on the mechanical model of viscoelastic-plastic surrounding rock of high-geothermal deep-buried hydraulic tunnel composed of generalized Kelvin model and Bingham model, and considering the influence of stress path on surrounding rock and support, combined with the influence of temperature stress on surrounding rock and lining in high-geothermal environment, the analytical solutions of stress, strain, cave wall displacement and radius of plastic zone radius of surrounding rock under the thermodynamic coupling of high-geothermal environment were derived. Based on the analysis and calculation of a highland temperature hydraulic tunnel project in Xinjiang, the relationship between temperature, stress strain and plastic zone radius of surrounding rock was theoretically calculated and analyzed. The results show that the displacement of the surrounding rock calculated after considering the temperature stress is smaller. When the temperature change in the tunnel reaches a certain amount, the resulting temperature stress may affect the stability of the surrounding rock interaction with the lining. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Southeast University / Dongnan Daxue Xuebao is the property of Journal of Southeast 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 Application Research of Computers / Jisuanji Yingyong Yanjiu is the property of Application Research of Computers 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 Natural Gas Geoscience is the property of Natural Gas Geoscience 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 Application Research of Computers / Jisuanji Yingyong Yanjiu is the property of Application Research of Computers 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 Application Research of Computers / Jisuanji Yingyong Yanjiu is the property of Application Research of Computers 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.)

Bone metastasis is one of the most serious complications in advanced breast cancer patients. Severe osteodynia, pathological fracture and other complications in bone metastasis of breast cancer can seriously affect the quality of life and shorten life span. In recent years, with the further understanding of the mechanism of bone metastases and the cross-talk between tumor cells and bone microenvironment, development and application of many new effective drugs have made significant progress in the treatment of bone metastasis of breast cancer. This article reviewed the mechanism of bone metastasis of breast cancer and current treatment advances. [ABSTRACT FROM AUTHOR]

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 Research & Exploration in Laboratory is the property of Research & Exploration in Laboratory 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.)

Focusing on the problem of students’ low efficiency in tradition exercise systems which are with a similar mode, an intelligent exercise system based on WeChat platform was developed. The system combines traditional collaborative filtering recommendation algorithm and knowledge graph. First, the relationship among user, question and knowledge point in the knowledge graph is considered, and the similarity between question and user’s answer is used to yield weights. Considering that the related knowledge point having not acquired is the main reason of getting the wrong answer, a knowledge-based recommendation scheme is used as the main method. Related knowledge points and similar questions queried from knowledge graph will be pushed into to queue and wait for recommendation. Furthermore, according to the historical exercise data, the wrong questions of the similar users will be recommended everyday as well.It was used for two years, and experimental results show that this mode has received wide favor among students and it can raise the review efficiency. [ABSTRACT FROM AUTHOR]

Copyright of Research & Exploration in Laboratory is the property of Research & Exploration in Laboratory 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.)