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Copyright of e-Education Research is the property of Northwest Normal 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.)

Copyright of Journal of Anhui Agricultural Sciences is the property of Journal of Anhui Agricultural Sciences 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 Graphics is the property of Journal of Graphics 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 the Beijing Institute of Fashion Technology (Natural Science Edition) is the property of Beijing Institute of Fashion 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.)

To effectively predict rockburst, a rockburst prediction method based on D-S evidence theory is proposed. Firstly, six indicator factors related to rockburst occurrence are selected as evidence, and the basic probability assignment of evidence is constructed through fuzzy matter-element framework and normal type degree of membership function. Then, the evidence is classified using K-means and a combined fusion rule of fusing evidence within clusters in classical Dempster’s rule while fusing evidence between clusters in the weighted way is proposed to reduce the adverse effects of high conflict evidence fusion. Finally, the model is applied to the No. 2 shaft project of the Qinling Zhongnanshan highway tunnel and compared with the empirical method. To address the uncertainty in the prediction process and to estimate the probability of rockburst occurrence, Monte Carlo simulation is used to perform sampling simulations and the global sensitivity of the input indicators is measured by Spearman’s rank correlation coefficient. The results show that the influence of the input indicators varies widely and in different directions for different rockburst cases; the probability of occurrence of the five rockburst cases ranges from 40. 8% to 70. 1%. The model shows outstanding predictive classification performance and can provide reference for rockburst prediction in deeply buried underground projects. [ABSTRACT FROM AUTHOR]

In order to better obtain wind energy, this article constructs a maximum power tracking control system based on model predictive torque active disturbance rejection, which is used for direct-drive permanent magnet synchronous generator (PMSG) to achieve maximum output power tracking of the system. In order to improve the response performance of PMSG and enhance the anti-interference performance of the system, this article first designed model predictive torque control (MPTC) for the current loop, and proposed a parameter compensation improved active disturbance rejection control (ADRC) strategy for the speed loop. This method inherits the advantages of ADRC and MPTC, and could effectively handle uncertainties such as internal and external interference, modeling errors, and wind speed variations to achieve maximum power tracking performance at different wind speeds.From the simulation results, it can be seen that when the wind speed changes slightly, the static error of the proposed control strategy speed is almost zero, while the error of the traditional MPTC control strategy is 0.2 rad/s. When the wind speed changes significantly, the error is small, and the error of the traditional MPTC control strategy reaches 5rad/s. The research results show that the proposed control method has better dynamic response performance and anti-interference performance than traditional controllers in maximum power tracking. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Nanjing Medical University: Natural Sciences is the property of Journal of Nanjing Medicial University (NMU) Medical Publications Center 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 Chongqing University of Technology (Natural Science) is the property of Chongqing 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 Acta Geoscientica Sinica is the property of Acta Geoscientica Sinica 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 the Beijing Institute of Fashion Technology (Natural Science Edition) is the property of Beijing Institute of Fashion 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.)

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Copyright of Ordnance Industry Automation is the property of Editorial Board for Ordnance Industry Automation 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 Acta Agriculturae Zhejiangensis is the property of Acta Agriculturae Zhejiangensis 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 Acta Geoscientica Sinica is the property of Acta Geoscientica Sinica 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 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.)

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Copyright of Engineering Science Research & Application 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 Tea Science is the property of Journal of Tea Science 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.)

【目的】探讨辛伐他汀含药血清对U937单核细胞源巨噬细胞基质金属蛋白酶-9（MMP-9）及金属蛋白酶组织抑制因子-1（TIMP-1）表达与分泌的影响。【方法】15只新西兰大白兔随机分为正常对照组（NL,n=5）、粥样硬化模型组（AS,n=5）和辛伐他汀含药血清组（SIM,n=5）。通过喂养高脂饲料,建立兔动脉粥样硬化模型后,予辛伐他汀药液灌胃,获得含药血清。分别予不同浓度含药血清（5%、10%、20%）培养U937单核细胞源巨噬细胞24 h,应用逆转录聚合酶链反应检测MMP-9 mRNA及TIMP-1 mRNA的表达,以及应用酶联免疫吸附试验检测MMP-9及TIMP-1蛋白的分泌。【结果】与相同浓度AS组比较,5%、10%、20%SIM组U937单核细胞源巨噬细胞MMP-9 mRNA表达均显著性降低（P值为0.005、0.041和0.013）;5%、10%、20%SIM组TIMP-1 mRNA表达无显著性差异（P值均〉0.05）。而与相同浓度AS组比较,不仅10%、20%SIM组MMP-9分泌显著性减少（P值分别为0.009和0.001）,而且10%、20%SIM组TIMP-1分泌均显著性增加（P值分别为0.017和0.001）。【结论】辛伐他汀可抑制单核巨噬细胞MMP-9的表达和分泌,以及促进TIMP-1的分泌。

Copyright of Guihaia is the property of Guihaia 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 Industrial Minerals & Processing / Huagong Kuangwu yu Jiagong is the property of Industrial Minerals & Processing 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 Materials Engineering / Cailiao Gongcheng is the property of Journal of Materials Engineering 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 Guihaia is the property of Guihaia 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 Ordnance Industry Automation is the property of Editorial Board for Ordnance Industry Automation 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 Southwest China Journal of Agricultural Sciences is the property of Editorial Department of Southwest China Journal of 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 Functional Materials / Gongneng Cailiao is the property of Chongqing Functional Materials Periodical Press 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 Ordnance Industry Automation is the property of Editorial Board for Ordnance Industry Automation 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.)

Ordos Basin is an important exploration base for coal, oil and gas. uranium and other resources in China. Several large and medium-sized sandstone-type uranium deposits are discovered in the northeastern, western and southeastern margins, the prospecting breakthrough in southwestern margin is always difficult in uranium exploration. Through the comprehensive study on the characteristics of tectonic setting, stratigraphic structure, lithology and lithofacies, hydrogeology and paleoclimate in Zhenyuan area, the southwestern margin of Ordos Basin, it is concluded that the Lower Cretaceous Luohe Formation has the conditions for the formation of sandstone-type uranium deposit in study area, such as the tectonic setting is favorable for fluid migration since Early Cretaceous, the aeolian sandstones of Luohe Formation have stable thickness and good permeability, the structure is mud-sand-mud or mud-sand-calcium (calcareous sandstone)/mud, the U contents in source and caprock layers are high, the groundwater runoff system is connected, the climatic condition is arid-semiarid, the reduction media of oil and gas is abundant. By studying the types and occurrence states of uranium minerals, it is proposed that the main type is pitchblende, and a small part is titanium containing uranium minerals. The occurrence states of uranium minerals are quite different from Zhiluo Formation in the northeastern margin of Ordos Basin, which are mainly associated with acicular apatite, feldspar chlorite, illite/smectite formation, dolomite and pyrite. etc. but not directly associated with carbon debris and other reducing media. Among them, the discovery of the associated relationship between sandstone-type uranium deposits and apatite is particularly important. According to the analysis of metallogenic conditions, the rising position of oil and gas controlled by fault structure may be the favorable exploration direction for the next step. [ABSTRACT FROM AUTHOR]

The traditional evaluation methods of earthquake disaster loss does not have a unified index to make a comprehensive assessment of the loss of earthquake disaster, which will cause some difficulties in the application. In order to comprehensively evaluate the loss of earthquake disaster and carry out multiple models comparison research, this paper presents multi-model methods for evaluating the loss of earthquake disaster based on lifeyears. Through the improvement of the lifeyears loss theory and the analysis of the value of the method parameters, the calculation scheme was determined. A comparative study was conducted on the lifeyears loss of earthquake in China grouped by years and regions. The relationship between the total lifeyears loss and its influence factors, such as the affected population, the epicentral intensity, the earthquake magnitude and recovery time was studied. The results showed that four influencing factors were all positively correlated with the total lifeyears loss. The affected population has the greatest correlation and the correlation of the other three factors is decreasing in turn. The linear regression model, the neural network quantile regression model and the nonlinear model of gene expression programming were established on the basis of the analysis of the influencing factors and the comparative analysis was carried out. Earthquake disaster loss was evaluated and predicted by using the evaluation model, which reduced data dependence and simplified the assessment process. [ABSTRACT FROM AUTHOR]

Copyright of Ordnance Industry Automation is the property of Editorial Board for Ordnance Industry Automation 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.)

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