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- 저자 : Hu Xiaolu (검색결과 5 건)
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Liu, Xiaolu,Yan, Hai,Lv, Le,Xu, Qianqian,Yin, Chunhua,Zhang, Keyi,Wang, Pei,Hu, Jiye Asian Australasian Association of Animal Productio 2012 Animal Bioscience Vol.25 No.5
A feeding trial was conducted to investigate effects of Bacillus licheniformis on growth performance and meat quality of broilers. Nine hundred one-d-old broiler chicks were randomly assigned to 3 experimental groups with three replicate pens of 100 broiler chicks. Three treatments were i) control, ii) basal diets supplemented with 1 ml of B. licheniformis for each in feed water per day iii) basal diets supplemented with 2 ml of B. licheniformis per chick in feed water per day. The supplementation of B. licheniformis significantly increased body weight in grower chickens (p<0.05), and significantly improved the feed conversion in 3 to 6 and 0 to 6 wk feeding period compared with the control group (p<0.05). Additionally, the supplement also resulted in increased protein and free amino acid contents, and decreased fat content in chicken breast fillet (p<0.05). Furthermore, improvement in sensory attributes was observed in broilers fed with the probiotic. In conclusion, B. licheniformis treatments resulted in a significant increase (p<0.05) in broiler productivity based on an index taking into account daily weight gain and feed conversion rate. Meanwhile, the probiotic contributed towards an improvement of the chemical, nutritional and sensorial characteristics of breast fillet. Overall, the study indicates that B. licheniformis can be used as a growth promoter and meat quality enhancer in broiler poultry.
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CRA Reputation and Bond Yield: Evidence from the Chinese Bond Market
Hua Wang,Xiaolu Hu,Haozhi Huang,Jing Shi 한국증권학회 2019 Asia-Pacific Journal of Financial Studies Vol.48 No.2
The paper examines the reputation effect of credit rating agencies (CRAs) in China. We find a negative association between CRAs’ reputation and public bonds’ offering yield spreads after controlling for endogeneity. Analyses of the correlation between CRA reputation and bond return volatility in the aftermarket and cross-sectional variations of reputation effects alongside a host of information environment proxies for issuers, we identify the information channel through which CRA reputation plays its role. This is further supported when we utilize an exogenous event, the introduction of an independent CRA (the China Bond Rating Co. Ltd), to explore the potential changes of the reputation effect.
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Loss and Efficiency Analysis of the Brushless Direct Current Motor with an Amorphous Stator Core
Lai Yifan,Hu Xiaolu,Shi Guibing,Yu Juntao,Wang Li,Gao Zhifeng 대한전기학회 2023 Journal of Electrical Engineering & Technology Vol.18 No.3
Due to the demand for energy conservation, the loss and efficiency of a brushless direct current (BLDC) motor is investigated. In order to improve the motor efficiency, we make efforts to reduce the loss by replacing the silicon steel (SS) stator with amorphous metal (AM) stator and improving the motor design. The motor performance is analyzed by simulations and experiments, and the processing influence on loss of AM material is also considered. It shows that the performance of the AM core deteriorates due to the stress introduced during the core processing, but the utilization of AM material and the optimization design can improve the motor efficiency by 4.76%. In addition, the weight of the motor is reduced by 11.36% than that of the initial motor. This research can provide a reference for the initial design and performance evaluation of AM BLDC motors.
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Cangsu Xu,Yangyang Hu,Xiaolu Li,Xuan Zhou,Anhao Zhong 한국화학공학회 2017 Korean Journal of Chemical Engineering Vol.34 No.2
An experimental study of laminar combustion characteristics of ethanol-air premixed mixtures was conducted with different ignition methods, including laser induced spark ignition (LISI) and electric spark ignition (SI) at an initial condition of 358 K temperature and 0.1MPa pressure. Flame propagation with the two different ignition methods was analyzed and discussed. The laminar flame speed was extrapolated with a nonlinear extrapolation method. Results indicate that the laminar speed of ethanol-air mixtures with LISI is faster than that with SI at lean mixtures, but slower at stoichiometric and rich mixtures. The peak values of the laminar burning velocity for SI and LISI with nonlinear extrapolation are 50.1 cm/s and 47.6 cm/s at the equivalence ratio of 1.1, respectively. Laser-induced spark ignition is able to ignite leaner ethanol-air mixtures.
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Yang Yang,Zhaojun Lan,Hu Shu,Huiqiang Zhou,Xiaolu Jiang,Liping Hou,Pinghua Gu 한국유전학회 2018 Genes & Genomics Vol.40 No.11
Melanocortin 4 receptor: (MC4R) and Myostatin (MSTN) are two important growth trait-related genes in animals. In this study, we showed that two SNPs, MC4R-719A>G and MSTN-519C>T, found in the promoters of the MC4R and MSTN genes, respectively, are both associated with growth traits in Spinibarbus hollandi. Furthermore, we observed that there were significant associations between the expression levels of the MC4R and MSTN genes and these two growth trait-related SNPs. The expression level of MC4R gene in brain was lower in GG genotype fish with extremely high growth performance than that in AA genotype fish with extremely low growth performance. Expression level of the MSTN gene in muscle was lower in TT genotype fish with extremely high growth performance than that in CC and CT genotype fish with lower growth performance. The results indicated that these SNPs located in the promoters of MC4R and MSTN are associated with growthrelated traits through modification of gene expression levels. The MSTN and MC4R SNPs may have useful application in effective marker-assisted selection aimed to increase output in S. hollandi.
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