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Copyright of Tropical Geography is the property of Tropical Geography 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 Shipin Kexue/ Food Science is the property of Food Science 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 Chinese Medical Equipment Journal is the property of Chinese Medical Equipment Journal 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 Medical Equipment Journal is the property of Chinese Medical Equipment Journal 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 Liaoning Technical University (Natural Science Edition) / Liaoning Gongcheng Jishu Daxue Xuebao (Ziran Kexue Ban) is the property of Journal of Liaoning Technical University (Natural Science) 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.)

In order to solve the problem that the photovoltaic grid-connected system using virtual synchronous generator (VSG) does not have low voltage ride through (LVRT) capability, when the voltage drops on the grid side, the model predictive control (MPC) is used to achieve fast current tracking and large-scale adjustment, and the adaptive objective function is set to improve the accuracy of reactive power distribution. When the fault is eliminated, the circuit simulator and the output variable consistency algorithm are used to realize the smooth switching of the control system. MATLAB/Simulink simulation and experiment results show that the new control strategy of photovoltaic low voltage ride through capability can make the photovoltaic power station with VSG have LVRT capability, reactive power regulation is more reasonable, MPC control and VSG control switching is more stable and there is no transient current impact. The research conclusions can provide theoretical basis for LVRT engineering application of high photovoltaic system. [ABSTRACT FROM AUTHOR]

Copyright of Acta Materiae Compositae Sinica is the property of Acta Materiea Compositae Sinica 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 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 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 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 Journal of Beijing University of Technology is the property of Journal of Beijing University of Technology, 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 Kunming Medical University / Kunming Yike Daxue Xuebao is the property of Kunming Medical 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 Liaoning Technical University (Natural Science Edition) / Liaoning Gongcheng Jishu Daxue Xuebao (Ziran Kexue Ban) is the property of Journal of Liaoning Technical University (Natural Science) 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 Shipin Kexue/ Food Science is the property of Food Science 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.)

Aiming at the problem that the traditional fault prediction algorithm can't accurately determine the circuit influence factor through the empirical value, the improved boost circuit with complex structure is selected as the circuit model. The identification parameters and characteristic parameters needed in the fault prediction algorithm are determined by AC/DC sensitivity analysis. The fault prediction algorithm predicts the corresponding parameter values of the device. The research results show that the relative error between the predicted data and the real data is controlled within a reasonable range, and the improvement of the algorithm is successfully completed. The research conclusion further reduces the identification error of the fault prediction algorithm, improves the accuracy and practicability of circuit fault prediction, and avoids circuit failure. [ABSTRACT FROM AUTHOR]

Objective To study the genetic polymorphisms of 19 autosomal STR loci in 215 healthy unrelated individuals of Yunnan Yi population， calculate population genetic parameters， and establish genetic basis data of Yunnan Yi population， and provide scientific basis for forensic material identification and individual identification. Methods The sample DNA was extracted by Chelex-100 method， amplified by PowerPlex 21 System kit， and the PCR composite amplification product was analyzed by ABI 3130XL automatic genetic analyzer. STR was performed with ABI GeneMapper v3.2 software. Genotyping analysis， statistical analysis of forensic genetic parameters and Hardy-Weinberg equilibrium test using Modified-Powerstates software. Results A total of 203 alleles and 666 genotypes were detected. Except D1S1656， D5S818， D12S391， the genotype distribution accorded with Hardy-Weinberg equilibrium law （P > 0.05）， the cumulative non-parent exclusion rate （CPE） was 0.999 999 907， and the cumulative personal recognition ability （TDP） was 0.999 999 999 999 999. 999 999 9. Conclusion The 19 autosomal loci have high polymorphism and good individual recognition ability in Yunnan Yi population， and can provide scientific genetic basic data for forensic individual identification and paternity identification. [ABSTRACT FROM AUTHOR]