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- 저자 : Zhang Jiaan (검색결과 3 건)
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Zhang Jiaan,Lei Huilin,Li Zhijun,Li Gege 대한전기학회 2022 Journal of Electrical Engineering & Technology Vol.17 No.6
The renewable energy fl uctuation and load randomness can cause the change of power quality indexes. However, fi xed weight comprehensive evaluation of power quality and single objective optimization are usually used in present multifunctional grid-connected inverter (MFGCI), which may lead to the deterioration of power quality control eff ect and the low utilization rate of remaining capacity. Using the G1 method and mixed variable weight principle, a new comprehensive power quality evaluation method is proposed in this paper. According to the dynamic changes of source and load, the weight of each index is adjusted in real time, which realizes the comprehensive evaluation of power quality. Furtherly, taking the optimal comprehensive power quality index and the minimum compensation capacity of the inverter as the objective functions, the values of individual indexes are constrained, and the nondominated sorting genetic algorithm II (NSGA-II) is used to realize the multi-objective optimization. Finally, the correctness and eff ectiveness of the proposed strategy are verifi ed in MATLAB.
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Wang Huakai,Wang Yanan,Zhang Yu,Li Juntao,Mi Yihai,Xue Yongqiang,Li Jiaan,Ma Yongxi 아세아·태평양축산학회 2023 Animal Bioscience Vol.36 No.5
Objective: The objective of this study was to determine whether dietary supplementation with a functional fatty acid blend (FA) that contains 31.4% butyric acid and 4.99% mediumchain FA improve growth performance, antioxidant capacity, immunity status, and antiinflammatory ability in weaned piglets. Methods: One hundred and forty-four healthy piglets (Duroc×Landrace×Yorkshire) with an average body weight (BW) of 7.98±3.43 kg were randomly divided into three groups with six replicate pens and eight piglets per pen: Normal control (NC): a corn-soybean basal diet; FA1: a basal diet supplemented with 1,000 mg/kg of a functional FA; FA2: a basal diet supplemented with 2,000 mg/kg of a functional FA. The experiment lasted for 28 d. On d 14 and 28, one piglet in each pen from NC and FA2 groups was randomly selected for antioxidative index and immunoglobulins. On d 28, one piglet in each pen from NC and FA2 groups was randomly selected for intestinal morphology and inflammatory factor. Results: We observed that FA supplementation linearly increased (p<0.05) average daily gain and the final BW. There was higher (p<0.05) catalase on d 14, and immunoglobulin (Ig) A and IgM on d 28 in piglets supplemented with FA2 than in the NC group. Moreover, dietary FA2 reduced (p<0.05) crypt depth of ileum in piglets. The concentrations of tumor necrosis factor-α, interleukin (IL)-1β, IL-8, and IL-10 in jejunum were lower (p<0.05) in the FA2 group compared with the NC group. Conclusion: Therefore, the overall results suggests that the FA may help to improve gut health, antioxidant status, and immune parameters resulting in the improvement of growth performance.
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Wenwu Zhou,Xin Yuan,Ping Qian,Jiaan Cheng,Chuanxi Zhang,Geoff Gurr,Zengrong Zhu 한국응용곤충학회 2015 Journal of Asia-Pacific Entomology Vol.18 No.4
Chemosensory proteins (CSP) afford insects the ability to recognize complicated environmental cues and are involved in diverse physiological processes. The planthoppers Laodelphax striatellus and Sogatella furcifera are serious specialist pests of rice throughout eastern Asia. In this study, we identified 21 putative CSP genes (namely LsCSP1–12 and SfCSP1–9) in the two planthoppers L. striatellus and S. furcifera, and profiled their transcript accumulation in different developmental stages and body parts by real-time quantitative PCR (qPCR). All CSPs had the characteristic typical features of the CSP family, with the exception of LsCSP10 and SfCSP2, which lacked the predicted signal peptide sequence. Among these putative CSP genes, only two (LsCSP9 and SfCSP5)weremore highly expressed in the antennae, indicating that they might be involved in olfaction. On the contrary, eleven genes (LsCSP2, 3, 4, 6, 8, 12; SfCSP1, 4, 6, 7, 8) and one gene (SfCSP9) were more highly expressed in the legs and heads (without antennae), respectively. The remainders of the genes were ubiquitously expressed in the heads (without antennae) and the bodies (without the legs and heads). The broad expression patterns in different body parts indicate that the CSPs of these two delphacid species may be involved in diverse functions besides chemosensation. These findings increase the understanding of the chemosensory protein system of Hemiptera species.
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