Effect of Yeast Chromium and L-carnitine on Lipid Metabolism of Broiler Chickens

Wang, Jundong,Du, Rong,Qin, Jian,Wang, Shaolin,Wang, Wenkui,Li, Hongquan,Pang, Quanhai Asian Australasian Association of Animal Productio 2003 Animal Bioscience Vol.16 No.12

A $3{\times}4$ (chromium and L-carnitine) experiment was designed to investigate the single and interactive effects of adding yeast Cr and L-carnitine to corn-soybean meal diets on lipid metabolism of broiler chickens. Four hundred and eighty one-day-old avian chickens were randomly allocated to 12 treatments of 40 each for 7 weeks. Levels of adding Cr were 0, 400, $600{\mu}g/kg$ and those of Lcarnitine was 0, 30, 50, 100 mg/kg, respectively. The result showed that adding $600{\mu}g/kg$ Cr or 100 mg/kg L-carnitine alone had better regulative effects on fat and cholesterol metabolism than lower adding levels. Effects were more significant at the end of the experiment. There were significantly interactive effects between Cr and L-carnitine on triaclyglycerol, whole cholesterol, HDL, dissociating FFA, and blood glucose, cholesterol and triaclyglycerol of liver, and cholesterol of chest muscle at the end of experiment (p=0.0001-0.0315). But Cr or L-carnitine had no significant effect on growth performance of broiler chickens (p>0.05).

A Wide Area Wind Power Control System Based WAMS and its Application

Cai, Hongquan,Bian, Erman,Xu, Hongtao,Wang, Xiaofeng,Du, Yu,Zhang, Zhidong,Jiao, Shaohua The Korean Institute of Electrical Engineers 2013 The Journal of International Council on Electrical Vol.3 No.2

This paper presents a wide area wind power control system (WPCS) based on WAMS that including its framework, master station, slave station and the control strategy. It is also stated that a practical case of the WPCS in Heilongjiang north China. The operation results demonstrate practicability and the advancement of the system.

Data Fusion Based Phase Space Reconstruction from Multi-Time Series

Rongxi Wang,Jianmin Gao,Zhiyong Gao,Xu Gao,Hongquan Jiang,Le Cui 보안공학연구지원센터 2015 International Journal of Database Theory and Appli Vol.8 No.6

Focused on the problem of imperfect information in the process of reconstruction from single time series, a new technology for phase space reconstruction from multi-time series based on the data fusion is proposed. Firstly, the methods Cao and mutual information are used to select the reconstruction parameters, time delay and embedded dimension; secondly, the social cognitive optimization algorithm is brought to calculate the weights for each variable; thirdly, an adaptive weighted fusion estimating method is applied for data fusion; lastly, the effectiveness of the methods mentioned in this paper is demonstrated by the analysis results of one case study of real chemical plant data sets, and the proposed methods in this paper can improve the completeness of the information of the reconstructed phase space, which is also a good foundation for further analysis of complex system.

Physiological responses and small RNAs changes in maize under nitrogen deficiency and resupply

Zhenchao Yang,Zhengyan Wang,Chengcheng Yang,Zhao Yang,Hongquan Li,Yongjun Wu 한국유전학회 2019 Genes & Genomics Vol.41 No.10

Background Maize is an important crop in the world, nitrogen stress severely reduces maize yield. Although a large number of studies have identified the expression changes of microRNAs (miRNAs) under N stress in several species, the miRNAs expression patterns of N-deficient plants under N resupply remain unclear. Objective The primary objective of this study was to identify miRNAs in response to nitrogen stress and understand relevant physiological changes in nitrogen-deficient maize after nitrogen resupply. Methods Physiological parameters were measured to study relevant physiological changes under different nitrogen conditions. Small RNA sequencing and qRT-PCR analysis were performed to understand the response of miRNAs under different nitrogen conditions. Results The content of chlorophyll, soluble protein and nitrate nitrogen decreased than CK by 0.52, 0.49 and 0.82 times after N deficiency treatment and increased than ND by 0.52, 1.36 and 0.65 times after N resupply, respectively. Conversely, the activity of superoxide dismutase (SOD) and peroxidase (POD) increased by 0.67 and 1.64 times than CK after N deficiency, respectively, and decreased by 0.09 and 0.35 times than ND after N resupply. A total of 226 known miRNAs were identified by sRNA sequencing; 106 miRNAs were differentially expressed between the control and N-deficient groups, and 103 were differentially expressed between the N-deficient and N-resupply groups (P < 0.05). Real-time quantitative PCR (qPCR) was used to further validate and analyze the expression of the identified miRNAs. A total of 1609 target genes were identified by target prediction, and some differentially expressed miRNAs were predicted to target transcription factors and functional proteins. Gene Ontology (GO) analysis was used to determine the biological function of these targets and revealed that some miRNAs, such as miR169, miR1214, miR2199, miR398, miR408 and miR827 might be involved in nitrogen metabolism regulation. Conclusion Our study comprehensively provides important information on miRNA functions and molecular mechanisms in response to N stress. These findings may assist to improve nitrogen availability in plants.

Effect of Fluctuation in Al Incorporation on the Microstructure, Bond Lengths, and Surface Properties of an AlxGa1-xN Epitaxial Layer

Xiong Zhang,Shuchang Wang,Hongquan Yang,Yiping Cui 대한금속·재료학회 2015 ELECTRONIC MATERIALS LETTERS Vol.11 No.4

AlxGa1-xN (0.15 ≤ x ≤ 0.87) epilayers were grown on sapphire substrates by metal-organic chemical vapor deposition (MOCVD). The lattice deformation, chemical bonding states, and local electronic structure were characterized by a series of techniques, including X-ray diffraction (XRD), Raman scattering, X-ray photoelectron (XPS), and extended Xray absorption fine structure (EXAFS) spectroscopy. The XRD and Raman spectra revealed that substitution of Ga with Al in AlxGa1-xN epilayers induces a significant contraction in the crystal lattice and a slight expansion of internal parameter u. The XPS measurements indicated the absence of remarkable disorder of the chemical bonds in AlGaN with a high Al content. The EXAFS analysis also demonstrated that the Ga-N and Ga-Al bond lengths are independent of the Al content, whereas the Ga-Ga bond length varies with Al content.

In vitro Screening of Traditional Chinese Medicines Compounds Derived with Anti-encephalomyocarditis Virus Activities

Jiangang Zheng,Yinlan Xu,Ajab Khan,Shaoyu Wang,Hongquan Li,Na Sun 한국생물공학회 2020 Biotechnology and Bioprocess Engineering Vol.25 No.2

The prevalence of encephalomyocarditis virus has brought about enormous financial losses to the swine industry throughout the globe. Chinese herbal medicines have potential antiviral activity which has been proved. Fifteen traditional Chinese medicine compounds were screened for anti-encephalomyocarditis virus (EMCV) activity. The maximum non-toxic concentration (MNTC), cytotoxic concentration 50% (CC50), maximal inhibition rate (MIR), and effective concentration 50% (EC50) against EMCV were measured using MTT and antiviral assays on baby hamster syrian kidney (BHK-21) cells. Two of the compounds, baicalin and matrine, with MIR > 50% and selective index (SI) > 3 were chosen for further virus load analysis. The results showed that the MIRs of baicalin and matrine were higher than that of positive control ribavirin while the SI values were much smaller than that of the control. Real-time quantitative PCR analysis demonstrated that baicalin and matrine have significant (p < 0.05) anti- EMCV activity compared to the control. It is a baseline study concluded that baicalin and matrine needs further development as an independent drugs or part of a Chinese medicine prescription for the treatment of EMCV infection.

Damage Evolutions and AE Characteristics for Square Concrete-Filled Steel Tubular Columns Under Axial Load

Jianguang Yue,Hua Fang,Yuefei Xia,Hongquan Wang,Kai Wu 한국강구조학회 2020 International Journal of Steel Structures Vol.20 No.6

The damage evolutions of square concrete-fi lled steel tubular (CFT) columns were experimentally studied by the axial compression cyclic loading test and the acoustic emission (AE) monitoring technique. Based on the mechanical analysis and damage observations, the limit damage states, i.e. inner concrete cracking, confi nement of steel tube, yielding and buckling of steel tube, weld seam splitting and inner concrete spalling were verifi ed. The released strain energy due to the damage of CFT column was monitored by the AE technique and analyzed by the peak frequency classifi cation method. The results show that the buckling of steel tube is the damage state with the maximum load carrying capacity for CFT columns. Most of the released strain energy were detected by the AE signals with the peak frequency between 30 and 75 kHZ and most of the strain energy were released after the buckling of the steel tube.

Trichoderma biodiversity in major ecological systems of China

Kai Dou,Jinxin Gao,Chulong Zhang,Hetong Yang,Xiliang Jiang,Jishun Li,Yaqian Li,Wei Wang,Hongquan Xian,Shigui Li,Yan Liu,Jindong Hu,Jie Chen 한국미생물학회 2019 The journal of microbiology Vol.57 No.8

An investigation of Trichoderma biodiversity involving a large-scale environmental gradient was conducted to understand the Trichoderma distribution in China. A total of 3,999 isolates were isolated from forestry, grassland, wetland and agriculture ecosystems, and 50 species were identified based on morphological characteristics and sequence analysis of genetic markers. Trichoderma harzianum showed the largest proportion of isolates and the most extensive distribution. Hypocrea semiorbis, T. epimyces, T. konilangbra, T. piluliferum, T. pleurotum, T. pubescens, T. strictipilis, T. hunua, T. oblongisporum and an unidentified species, Trichoderma sp. MA 3642, were first reported in China. Most Trichoderma species were distributed in Jilin and Heilongjiang Provinces in northeast China and the fewest were distributed in Qinghai Province. Based on the division of ecological and geographic factors, forestry ecosystems and low-altitude regions have the greatest species biodiversity of Trichoderma.