The Protective Effects of Different Mycotoxin Adsorbents against Blood and Liver Pathological Changes Induced by Mold-contaminated Feed in Broilers

Che, Zhengquan,Liu, Yulan,Wang, Huirong,Zhu, Huiling,Hou, Yongqing,Ding, Binying Asian Australasian Association of Animal Productio 2011 Animal Bioscience Vol.24 No.2

An experiment was conducted to determine the effects of different mycotoxin adsorbents including esterified glucomannan (EGM), hydrated sodium calcium aluminosilicate (HSCAS) and compound mycotoxin adsorbent (CMA) on performance, blood parameters, and liver pathological changes in broilers fed mold-contaminated feed. Two hundred and forty 10-day-old broilers were randomly assigned to one of the five dietary treatments including: i) control diet; ii) mold-contaminated diet; iii) moldcontaminated diet+0.05% EGM; iv) mold-contaminated diet+0.2% HSCAS; v) mold-contaminated diet+0.1% CMA. At 35-days-old, blood and liver tissue samples were collected for analysis. 0.1% CMA improved ADG and ADFI during 10-42 d compared to the moldcontaminated group (p<0.05). The mold-contaminated diet increased total white blood cell (WBC) number, haemoglobin (Hgb) concentration, hematocrit (Hct) level, serum aspartate aminotransferase (AST) and ${\gamma}$-glutamyl transferase (GGT) activities, and decreased red blood cell (RBC) number and serum globulin (GLB) and urea nitrogen (BUN) concentrations (p<0.05). The three mycotoxin adsorbents alleviated the alteration of RBC, WBC, Hgb and AST caused by the mold-contaminated diet. Furthermore, 0.1% CMA increased GLB concentration and decreased Hct level and GGT activity (p<0.05). Liver superoxide dismutase (SOD) activity was reduced, and myeloperoxidase (MPO) activity was increased by the mold-contaminated diet (p<0.05). Both EGM and HSCAS prevented the increase of MPO activity (p<0.05). Liver lesion, including severe vacuolar degeneration of hepatocytes, was observed in chicks fed the mold-contaminated diet. 0.05% EGM prevented these effects except for biliary hyperplasia and mild vacuolar degeneration. 0.2% HSCAS showed medium vacuolar degeneration of hepatocytes. Liver of broilers fed 0.1% CMA revealed a mild vacuolar degeneration. These results indicate that a mold-contaminated diet results in adverse effects on blood parameters and liver morphology. 0.05% EGM and 0.2% HSCAS partially alleviated the adverse effects. However, 0.1% CMA almost completely ameliorated the adverse effects.

ECG PVC Classification Algorithm based on Fusion SVM and Wavelet Transform

Huang Dong,Liao Zhengquan,Li Changbin,Li Dan,Huang Wendong 보안공학연구지원센터(IJSIP) 2015 International Journal of Signal Processing, Image Vol.8 No.1

In the process of ventricular premature beat (PVC) and normal sinus rhythm (NSR) identification base on electrocardiogram (ECG), there exists problems like negative effect from ECG rhythm and low recognition rate. This paper proposes the electrocardiogram PVC classification algorithm based on support vector machine (SVM) and wavelet algorithm. The algorithm uses the wavelet transform to analyze ECG beating model, which is not influenced by the change of ECG waveform. The two feature sets respectively compose of statistical parameters of the wavelet coefficients and the selected wavelet coefficients. PVC and NSR are analyzed by using SVM. The experimental results show that this method improves the recognition rate of ECG.

Green cabbage supplementation influences the gene expression and fatty acid levels of adipose tissue in Chinese Wanxi White geese

Bin Wang,Zhengquan Liu,Xingyong Chen,Cheng Zhang,Zhaoyu Geng Asian Australasian Association of Animal Productio 2023 Animal Bioscience Vol.36 No.10

Objective: Dietary green cabbage was evaluated for its impact on fatty acid synthetic ability in different adipose tissues during fattening of Wanxi White geese. Methods: A total of 256 Wanxi White geese at their 70 days were randomly allocated into 4 groups with 4 replicates and fed 0%, 15%, 30%, and 45% fresh green cabbage (relative to dry matter), respectively, in each group. Adipose tissues (subcutaneous and abdominal fat), liver and blood were collected from 4 birds in each replicate at their 70, 80, 90, and 100 days for fatty acid composition, relative gene expression and serum lipid analysis. Two-way or three-way analysis of variance was used for analysis. Results: The contents of palmitic acid (C16:0), palmitoleic acid (C16:1), linoleic acid (C18:2), and alpha-linolenic acid (C18:3) were feeding time dependently increased. The C16:0 and stearic acid (C18:0) were higher in abdominal fat, while C16:1, oleic acid (C18:1), and C18:2 were higher in subcutaneous fat. Geese fed 45% green cabbage exhibited highest level of C18:3. Geese fed green cabbage for 30 d exhibited higher level of C16:0 and C18:0 in abdominal fat, while geese fed 30% to 45% green cabbage exhibited higher C18:3 in subcutaneous fat. The expression of Acsl1 (p = 0.003) and Scd1 (p<0.0001) were decreased with green cabbage addition. Interaction between feeding time and adipose tissue affected elongation of long-chain fatty acids family member 6 (Elovl6), acyl-CoA synthetase longchain family member 1 (Acsl1), and stearoly-coA desaturase 1 (Scd1) gene expression levels (p = 0.013, p = 0.003, p = 0.005). Feeding time only affected serum lipid levels of free fatty acid and chylomicron. Higher contents of C16:0, C18:1, and C18:3 were associated with greater mRNA expression of Scd1 (p<0.0001), while higher level of C18:2 was associated with less mRNA expression of Scd1 (p<0.0001). Conclusion: Considering content of C18:2 and C18:3, 30% addition of green cabbage could be considered for fattening for 30 days in Wanxi White geese.

Cloning and expression of lin-28 homolog B gene in the onset of puberty in Duolang sheep

Feng Xing,Chaoyang Zhang,Zhengquan Kong 아세아·태평양축산학회 2019 Animal Bioscience Vol.32 No.1

Objective: Recent studies have demonstrated that lin-28 homolog B (LIN28B)/miRNA let-7 (let-7) plays a role in the regulation of pubertal onset in mammals. However, the role of LIN28B/let-7 in the onset of ovine puberty remains unknown. We cloned the Duolang sheep Lin28B cDNA sequence, detected the expression change of LIN28B, let-7a and let-7g in hypothalamus, pituitary and ovary tissues at three different pubertal stages. Methods: The reverse transcriptase polymerase chain reaction (RT-PCR) was used to clone the cDNA sequence of LIN28B gene from Duolang sheep and the bioinformatics methods were applied to analyze the amino acid sequence of LIN28B protein. The mRNA expression levels of the LIN28B gene at different pubertal stages were examined by real time RT-PCR. Results: LIN28B cDNA of Duolang sheep was cloned, and two transcripts were obtained. The amino acid sequence of transcript 1 shares 99.60%, 98.78%, and 94.80% identity with those of goat, wild yak and pig, respectively. Strong LIN28B mRNA expression was detected in the hypothalamus, pituitary, ovary, oviduct and uterus, while moderate expression was found in the liver, kidney, spleen and heart, weak expression was observed in the heart. No expression was found in the lungs. Quantitative real-time PCR (QPCR) and western-blot analysis revealed that the LIN28B was highly expressed in the hypothalamus and ovary at prepuberty stages, and this expression significantly decreased from the prepuberty to puberty stages (p<0.05). Markedly increased levels of mRNA expression were detected in the pituitary from prepuberty to puberty (p<0.05) and then significantly decreased from puberty to postpuberty (p<0.05). The expression levels of let-7a and let-7g showed no significant changes among different pubertal stages (p>0.05). Conclusion: These results provided a foundation for determining the functions of LIN28B/let-7 and their role in the onset of sheep puberty.

Effect of inwards FDI on new venture creation, industrialization and economic growth in Russia: A timeseries ARDL approach

Kristina, Yuryeva,He, Zhengquan Kyung Hee University Management Research Institute 2022 Asia pacific journal of business review Vol.7 No.1

This research aimed to clarify the impacts casted by inwards FDI on New venture creation, industrialization, and the economic growth of Russia. For all of these variables, data was taken about Russia from the site of The World Bank, and the selected duration was from 1995 to 2019. The total duration of the data taken was from 24 years. The time duration was well enough for applying the A.R.D.L. approach to the time series data of the study. This research used the unit root test to know the presence of the unit root for each variable, the lag order selection was made for the data, the bounds cointegration test was also applied, and ARDL Model was used to know about the different effects. With the help of the results derived, it was observed that the impact of private sector investment on new venture creation is significant. In contrast, foreign direct investment and research and development (R&D) effects on new venture creation are insignificant. It was also observed from the results that the impact of R&D on industrialization in Russia is significant, while the effects of FDI and the impact of private sector investment on industrialization in Russia is insignificant. We have fund that the effect of FDI and the impact of private sector investment on the economic growth of Russia is significant. In contrast, the impact of R&D is insignificant to the economic growth of Russia. The study is of great significance as it has raised the importance of R&D for industrialization, FDI, and PSI for economic growth and new venture creation for developing countries.

Distributed Convex Optimization for Flocking of Nonlinear Multi-agent Systems

Qing Zhang,Zhikun Gong,Zhengquan Yang,Zengqiang Chen 제어·로봇·시스템학회 2019 International Journal of Control, Automation, and Vol.17 No.5

A distributed optimization problem with differentiable convex objective function is discussed forcontinuous-time multi-agent systems with flocking behavior of a nonlinear continuous function. The goal of thispaper is to design a controller by using only local interaction information, thus making velocities of all agents be thesame. Then the stability of the multi-agent systems is proved and the velocities converge to the value minimizingthe sum of local objective functions. Moreover, the paper got some sufficient conditions for the consensus and theoptimization. Finally, a numerical case is used to verify the analytical results.

Mxene structure: A key parameter in corrosion barrier performance of organic coatings

Ziyang Zhou,Sepideh Pourhashem,Zhengquan Wang,Jiawen Sun,Xiaohong Ji,Xiaofan Zhai,Jizhou Duan,Baorong Hou 한국공업화학회 2022 Journal of Industrial and Engineering Chemistry Vol.116 No.-

In this research, the effects of fresh and oxidized MXene on the surface, adhesion, and corrosion-resistantproperties of waterborne epoxy coatings are considered. The oxidized MXene is prepared through storageof fresh MXene nanosheets in an open vial for 1 month. The results confirm that the waterborne epoxycoating loaded with silane functionalized fresh MXene nanosheets (epoxy/F-MXene) has significantlyhigher barrier performance and anti-corrosion behavior than the sample modified with silane functionalizedoxidized MXene nanosheets (epoxy/F-O-MXene). Indeed, the F-MXene nanosheets (with defectfreeand large two dimensional morphology) are able to effectively inhibit the path of corrosive mediaas well as increment the epoxy matrix compactness compared to the F-O-MXene (with broken nanosheetmorphology composed of TiO2 nanoparticles) due to rapid oxidation of the MXene nanosheets in theenvironment. Besides, the epoxy/F-MXene nanocomposite coating has slightly higher water contact angleand adhesion strength to the metallic substrate compared to the epoxy/F-O-MXene. The results of thisresearch clearly reveal the importance of preventing MXene oxidation before application as nanofillerin the polymer coatings.

How inwards FDI promotes economic growth in Russia? Evidence from a time-series ARDL approach

Kristina, Yuryeva,He, Zhengquan Kyung Hee University Management Research Institute 2022 Asia pacific journal of business review Vol.7 No.1

This research aimed to clarify the impacts casted by inwards FDI on New venture creation, industrialization, and the economic growth of Russia. For all of these variables, data was taken about Russia from the site of The World Bank, and the selected duration was from 1995 to 2019. The total duration of the data taken was from 24 years. The time duration was well enough for applying the A.R.D.L. approach to the time series data of the study. This research used the unit root test to know the presence of the unit root for each variable, the lag order selection was made for the data, the bounds cointegration test was also applied, and ARDL Model was used to know about the different effects. With the help of the results derived, it was observed that the impact of private sector investment on new venture creation is significant. In contrast, foreign direct investment and research and development (R&D) effects on new venture creation are insignificant. It was also observed from the results that the impact of R&D on industrialization in Russia is significant, while the effects of FDI and the impact of private sector investment on industrialization in Russia is insignificant. We have fund that the effect of FDI and the impact of private sector investment on the economic growth of Russia is significant. In contrast, the impact of R&D is insignificant to the economic growth of Russia. The study is of great significance as it has raised the importance of R&D for industrialization, FDI, and PSI for economic growth and new venture creation for developing countries.

Design and Analysis of an Automatic Voltage Regulator Microcontroller-based Distributed Power Supply

Xiumin Wang,Liting Jiang,Liang Shan,Zhengquan Li,Rihui Xiong,Jianbing Xu 보안공학연구지원센터 2015 International Journal of Smart Home Vol.9 No.5

The design of an automatic voltage regulator (AVR) microcontroller-based distributed DC power supply is presented. The system includes a photovoltaic (PV) power generation, commercial hardware drive power system, and a battery booster circuit. A software control technology is used for storage battery charging and discharging. The PID control algorithm is used to control AVR microcontroller to achieve maximum power point tracking (MPPT) and to improve system stability. In addition to the traditional battery power, the system can make full use of solar system for energy sustainability. Experiment results show that the proposed system outperforms the traditional system with respect to the function of track, monitor and fine-tune for system steady state.

H7N9 Avian Influenza Emergency Management in China -Temperature and Live Poultry Markets Analysis with Responding Policy Study -

An Chen,YueHua Li,Fei Chi,Zhengquan Yuan 위기관리 이론과 실천 2014 Journal of Safety and Crisis Management Vol.4 No.1

Influenza A virus subtype H7N9 has received great attention since the first human case was reported at the beginning of this year. The viral characteristics have been quickly brought into research process. Here, the effect of temperature and live poultry market has been considered on the basis of analysis of existing data. As expected, both temperature and live poultry market has significant impact on the spread of this epidemic. Finally, the effect of government reactions and medical treatment on response was discussed. It indicated that sufficient and rapid reactions did not always lead to a perfect outcome which proved the influence of temperature and live poultry market potentially. Research highlights: The effect of temperature on H7N9 avian influenza is proved by analyzing the latitude and temperature of affected area. The effect of live poultry markets on H7N9 avian influenza is confirmed by analyzing the relationship between the number of live poultry markets in affected area and incidence of H7N9 human infection. The effect of government actions and medical treatment is studied and it turned out the result is not in accordance with actual efforts.