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RISS 인기검색어
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- 저자 : Yali Gao (검색결과 5 건)
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Frequency Response Analysis on Modified Plant of Extended State Observer
Yuqiong Zhang,Yali Xue,Donghai Li,Zhiqiang Gao,Haiming Niu,Huanpao Huang 제어로봇시스템학회 2017 제어로봇시스템학회 국제학술대회 논문집 Vol.2017 No.10
The active disturbance rejection control (ADRC) framework gives birth to a new concept, the modified plant (MP), describing the dynamics after the total disturbance is estimated and cancelled approximately. Ideally the modified plant is in integral form, to greatly simplify and fix the controller design, even though actual plant contains higher-order dynamics or dead time. This paper investigates that when such processes are modified into the integral, how the parameters of the extended state observer (ESO) impact on the dynamic characteristics and stability of the MP. Frequency-domain analyses show that the MP can gradually approach the integral form through parameters tuning. However, it should be cautious that an aggressive set of parameters may lead to an unstable modified plant in the presence of order mismatch.
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Zinc Oxide-Enhanced Piezoelectret Polypropylene Microfiber for Mechanical Energy Harvesting
Zhu, Jianxiong,Zhu, Yali,Song, Weixing,Wang, Hui,Gao, Min,Cho, Minkyu,Park, Inkyu American Chemical Society 2018 ACS APPLIED MATERIALS & INTERFACES Vol.10 No.23
<P>This paper reports zinc oxide (ZnO)-coated piezoelectret polypropylene (PP) microfibers with a structure of two opposite arc-shaped braces for enhanced mechanical energy harvesting. The ZnO film was coated onto PP microfibers via magnetron sputtering to form a ZnO/PP compound structure. Triboelectric Nanogenerator (TENG) based on ZnO/PP microfiber compound film was carefully designed with two opposite arc-shaped braces. The results of this study demonstrated that the mechanical energy collection efficiency of TENG based on piezoelectret PP microfiber was greatly enhanced by the coated ZnO and high-voltage corona charging method. We found that, with the step-increased distance of traveling for the movable carbon black electrode, an electrical power with an approximately quadratic function of distance was generated by this mechanical-electrical energy conversion, because more PP microfibers were connected to the electrode. Further, with a full contact condition, the peak of the generated voltage, current, and charges based on the ZnO/PP microfibers by this mechanical-electrical energy conversion with 1 m/s<SUP>2</SUP> reached 120 V, 3 μA, and 49 nC, respectively. Moreover, a finger-tapping test was used to demonstrate that the ZnO/PP microfiber TENG is capable of lighting eight light-emitting diodes.</P> [FIG OMISSION]</BR>
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Yawen Guo,Jinyuan Chen,Shuyu Liu,Yali Zhu,Pengfei Gao,Kaizhou Xie 한국축산학회 2022 한국축산학회지 Vol.64 No.5
This study aimed to determine the effect of dietary supplementation with Acremonium terricolaculture (ATC) on the quality, conventional characteristics, and flavor substances of Hortobágygoose meat. A total of 720 one-day-old goslings were divided into four dietary treatments, eachconsisting of six cages of 30 goslings. The dietary conditions consisted of the control group andthree treatment groups supplemented with 3, 5, or 7 g/kg ATC. In male geese, supplementationwith 3 g/kg ATC elevated the crude ash (CA) content of the thigh muscle compared to the controlgroup, and the CA content of the pectoralis major was significantly elevated when geesewere supplemented with 5 g/kg ATC (p < 0.05). In females, compared with the control group,supplementation with 7 g/kg ATC enhanced the crude protein (CP) content of the pectoralismajor. Supplementation with 7 g/kg ATC also increased the crude fat (CF) content of the pectoralismajor in females as well as in both sexes; moreover, this supplementation dose increasedthe inosinic acid content of the thigh muscle in males and in both sexes. In contrast, supplementationwith 5 g/kg ATC decreased the pH of the thigh muscle at 12 h postmortem (p < 0.01). No significant changes in meat color, water loss rate, shear force, moisture content or aminoacid (AA) levels were observed after ATC supplementation (p > 0.05). Levels of saturated fattyacids (SFAs) and polyunsaturated FAs (PUFAs) in the pectoralis major and levels of SFAs,monounsaturated FAs (MUFAs), and PUFAs in the thigh muscle were not affected by the supplementation. Overall, ATC supplementation had positive effects on the pH, and CA, CP, CF,inosinic acid contents as well as on the FA composition of gosling meat. The optimal level ofATC supplementation was 7 g/kg in goslings from 1 to 70 days of age.
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Fanfeng Meng,Xue Li,Jian Fang,Yalong Gao,Lilong Zhu,Guiju Xing,Fu Tian,Yali Gao,Xuan Dong,Shuang Chang,Peng Zhao,Zhizhong Cui,Zhihao Liu 대한수의학회 2016 Journal of Veterinary Science Vol.17 No.4
The genomic diversity of Avian leukosis virus subgroup J (ALV-J) was investigated in an experimentally infected chicken. ALV-J variantsin tissues from four different organs of the same bird were re-isolated in DF-1 cells, and their gp85 gene was amplified and cloned. Ten clonesfrom each organ were sequenced and compared with the original inoculum strain, NX0101. The minimum homology of each organ rangedfrom 96.7 to 97.6%, and the lowest homology between organs was only 94.9%, which was much lower than the 99.1% homology of inoculumNX0101, indicating high diversity of ALV-J, even within the same bird. The gp85 mutations from the left kidney, which contained tumors,and the right kidney, which was tumor-free, had higher non-synonymous to synonymous mutation ratios than those in the tumor-bearing liverand lungs. Additionally, the mutational sites of gp85 gene in the kidney were similar, and they differed from those in the liver and lung, implyingthat organ- or tissue-specific selective pressure had a greater influence on the evolution of ALV-J diversity. These results suggest that moreALV-J clones from different organs and tissues should be sequenced and compared to better understand viral evolution and molecularepidemiology in the field.
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