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Gao Qingwu,Liu Xijun 한국통계학회 2020 Journal of the Korean Statistical Society Vol.49 No.2
In this paper, we obtain the weakly asymptotic formulas of the tail probabilities of randomly weighted sums and their maximum of dominated varying-tailed random variables under a general conditional dependence structure, where the corresponding random weights can take values in the whole real space. The obtained results extend and improve some existing ones. An application of the weakly asymptotic formulas is proposed to estimate the ruin probability in a discrete-time risk model.
Shen Zhenglei,Liu Chuxin,Deng Chuangye,Guo Qiuping,Li Fengna,Shen Qingwu W. 아세아·태평양축산학회 2024 Animal Bioscience Vol.37 No.4
Objective: The objective of this study was to investigate the influence of dietary supplementation of Eucommia ulmoides leaf extract (ELE) on muscle metabolism and meat quality of pigs with and without pre-slaughter transportation. Methods: In a 43-day feeding experiment, a total of 160 pigs with an initial body weight 60.00±2.00 kg were randomly assigned into four groups in a completely randomized design with 10 replicates. Pigs in groups A and C were fed a basal diet and pigs in groups B and D were fed a basal diet supplemented with 0.5% ELE. Pigs were slaughtered with (group B and D) or without (group A and C) pre-slaughter transport. Muscle chemical composition, postmortem glycolysis, meat quality and muscle metabolome were analyzed. Results: Dietary ELE supplementation had no effect on the proximate composition of porcine muscle, but increased free phenylalanine, proline, citruline, norvaline, and the total free amino acids in muscle. In addition, dietary ELE increased decanoic acid and eicosapentaenoic acid, but decreased heptadecanoic acid, oleic acid, trans-oleic acid, and monounsaturated fatty acids in muscle. Meat quality measurement demonstrated that ELE improved meat water holding capacity and eliminated the negative effects of pre-slaughter transport on meat cooking yield and tenderness. Dietary ELE reduced muscle glycolytic potential, inhibited glycolysis and muscle pH decline in the postmortem conversion of muscle to meat and increased the activity of citrate synthase in muscle. Metabolomics analysis by liquid chromatographic tandem mass spectrometric showed that ELE enhanced muscle energy level, regulated AMP-activated protein kinase (AMPK) signaling, modulated glycogenolysis/glycolysis, and altered the metabolism of carbohydrate, fatty acids, ketone bodies, amino acids, purine, and pyrimidine. Conclusion: Dietary ELE improved meat quality and alleviated the negative effect of preslaughter transport on meat quality by enhancing muscle oxidative metabolism capacity and inhibiting glycolysis in postmortem muscle, which is probably involved its regulation of AMPK.
Comprehensive Analysis of the Wushu Education Performance and Multimedia Teaching in College
Wei Dongyi,Lu Qingwu,Liu Dan,Fan Hongling,Long Xiaodong 보안공학연구지원센터 2015 International Journal of u- and e- Service, Scienc Vol.8 No.12
With computer-assisted instruction is widely used in university education, Multi-media teaching has produced a new form of education. Multimedia teaching has the effect of interactive and dynamic multi-dimensional, which enhances the students' learning interest and the understanding. In this paper, we make an empirical analysis about the impact of Wushu education on college students .The result shows that after using multimedia teaching, Wushu teaching can improve the physical function of college students, it will significantly improve the college students' sports view, sports value and sports motivation. At the same time, multimedia teaching can effectively improve the teaching quality. On this basis, we put forward relevant suggestions.
Min Wang,Xiaoming He,Biao Jiang,Wenrui Liu,Yu’e Lin,Dasen Xie,Zhaojun Liang,Lihui Chen,Qingwu Peng 한국식물생명공학회 2019 Plant biotechnology reports Vol.13 No.6
Drought, one of the crucial environmental constraints, seriously threats the quality and yield in chieh-qua. Therefore, cultivat-ing drought-tolerant variety is greatly necessary for its normal growth under water deficiency. However, at present, molecular knowledge on drought resistance is mostly unclear in chieh-qua. In the study, characteristics of two diverse genetic chieh-qua variety, A39 (drought-resistance) and H5 (drought-sensitivity), were analyzed. Under drought stress, H5 exerted high water loss rate, increased malonaldehyde (MDA) content, and decreased enzyme activity of glutathione peroxidase (GSH-PX) and superoxide dismutase (SOD) compared with A39. In addition, based on the transcriptome results, we obtained a total of 1821 (511 up-regulated and 1310 down-regulated) and 2114 (1282 up-regulated and 832 down- regulated) differentially expressed genes (DEGs) in the A39 versus H5 under normal and water-deficiency stress, respectively. Several DEGs involved in the cuticle synthesis (cytochrome P450 genes: CYP94A2, CYP86B1, CYP86A7), carbohydrate metabolism, and plant hormone signal transduction (small auxin-up RNA genes: SAUR32, SAUR72; JA-induced genes: TIFY 10A, TIFY 10C; ABA related genes: PYL2, PYL4) were explored and related to drought resistance. These expression patterns observed in the RNA-seq data were further confirmed with quantitative real-time PCR (qRT-PCR). In all, these results not only provided a new insight into analyzing genes of drought response, but also laid a foundation for isolating crucial genes involved in drought stress in chieh-qua.