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Yin, Fugui,Yin, Yulong,Kong, Xiangfeng,Liu, Yulan,He, Qinghua,Li, Tiejun,Huang, Ruilin,Hou, Yongqing,Shu, Xugang,Tan, Liangxi,Chen, Lixiang,Gong, Jianhua,Kim, Sung Woo,Wu, Guoyao Asian Australasian Association of Animal Productio 2008 Animal Bioscience Vol.21 No.9
This study was conducted to investigate the effects of Acanthopanax senticosus extract (ASE) as a dietary additive on gut microflora in weaned piglets. A total of sixty pigs were weaned at 21 d of age (BW = $5.64{\pm}0.23kg$) and allocated on the basis of BW and litter to three dietary treatments in a randomized complete block design. The dietary treatments were: control group (basal diet), antibiotics group (basal diet+0.02% colistin), and ASE group (basal diet+0.1% ASE). On d 7, 14 and 28 after consuming the experimental diets, five piglets per group were sacrificed and then the contents from the jejunum, ileum and cecum were collected to determine changes in the microbial community by using a polymerase chain reaction-denaturing gradient gel electrophoresis (PCR-DGGE) technique and estimating the contents of Lactobacillus and E. coli by in vitro culturing methods. The results showed that the ASE promoted the microflora diversity in the cecum. Enumeration of bacteria in the gut contents showed that the number of Lactobacillus increased (p<0.05), while that of E. coli decreased (p<0.05) when compared with the other 2 groups as the days of age progressed post-weaning. These findings suggested that the ASE, as a substitute for dietary antimicrobial products, could improve the development of the normal gut microflora and suppress bacterial pathogens, and effectively promote a healthy intestinal environment.
Jianhua Liu,Haihui Pu,Dejin Yin,Bin Gao,Hongyue Gao,Haitao Dai 한국물리학회 2010 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.56 No.4
An analytical method was applied for quantitative determinations of the initial rate coefficients of diffusion and reaction for a photo-curable recipe in holographic photo-polymerization. The results showed that the initial diffusion rate kept within small discrepancy despite an order of magnitude difference in the curing light power, while corresponding differences were found for the decay constants of diffusion and reaction in the curing process. Polymerization kinetics was analyzed for both curing and post curing processes.
Deadlock Avoidance Based on Graph Theory
Biyuan Yao,Jianhua Yin,Wei Wu 보안공학연구지원센터 2016 International Journal of u- and e- Service, Scienc Vol.9 No.2
Deadlock Avoidance remains to be a significant aspect of deadlock research. Modeling approaches based on Graph Theory provide effective strategy to solve this problem. We built avoidance model of directed graph and adjacent matrix via resource allocation graph, proposed three improved algorithm for deadlock avoidance and discussed the implementation of the program. The topology analyze of matrix storage information indicates entire optimization utilization results though certain key vertices and edges, this model verified by the banker’s algorithm and Petri net finally.
Path Optimization Algorithms Based on Graph Theory
Biyuan Yao,Jianhua Yin,Hui Zhou,Wei Wu 보안공학연구지원센터 2016 International Journal of Grid and Distributed Comp Vol.9 No.6
Transport with minimum time cost and distance remains to be an important research area in intelligent transport systems. Shortest path algorithms are primary methods to address simplified problems, which could not be well applied in high-dimensional real situations. We realized the minimum cost and maximum flow result via classical iterative algorithm based on graph theory, adjacency matrix is well applied to express the relationship between transport nodes, a topological sorting transport map is adopted to verify these approaches.
Xuan Xie,Xijun Hua,Jianhua Li,Xiaobin Cao,Zhixiang Tian,Rui Peng,Bifeng Yin,Peiyun Zhang 대한기계학회 2021 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.35 No.5
To enhance the friction and wear resistance of GCr15/PTFE sliding contact surfaces, the synergistic lubrication effect of micro-textures and solid lubricants were studied in this paper. Micro-textures were processed on GCr15 samples by Nd:YAG laser, which were filled with MoS 2 . Tribological performance tests were carried out on a Rtec-MFT 5000 tester. Tribological properties were optimal with the textures density of 20 % and depth of 9 μm. A continuous composite solid lubricating film was formed by PTFE and MoS 2 . As load increases, friction coefficient of the sample shows a rapid decline and then stabilizes. With the increase of reciprocating frequency, friction curve of the sample shows a trend of slight fluctuation. When frequency is 2.7 Hz, friction coefficient is the lowest. Tribological properties of PTFE/GCr15 contact surfaces could be significantly optimized by micro-textures and MoS 2 , which performs favorable prospect of engineering application such as guide rails, bearings, machinery seal, etc.
Effect of O2 Plasma Treatment on Density-of-States in a-IGZO Thin Film Transistors
Xing-Wei Ding,Fei Huang,Sheng Li,Jianhua Zhang,Xue-Yin Jiang,Zhi-Lin Zhang 대한금속·재료학회 2017 ELECTRONIC MATERIALS LETTERS Vol.13 No.1
This work reports an efficient route for enhancing the performanceof amorphous InGaZnO (a-IGZO) thin film transistors (TFT). Themobility was greatly improved by about 38% by means of O2plasma treatment. Temperature-stress was carried out to investigatethe stability and extract the parameters related to activation energy(Ea) and density-of-states (DOS). The DOS was calculated on thebasis of the experimentally obtained Ea, which can explain theexperimental observation. A lower activation energy (Ea, ~0.72 eV)and a smaller DOS were obtained in the O2 plasma treatment TFTbased on the temperature-dependent transfer curves. The resultsshowed that temperature stability and electrical propertiesenhancements in a-IGZO thin film transistors were attributed to thesmaller DOS.
Jun Li,Chuanxin Huang,Yi-Zhou Fu,Jianhua Zhang,Xue-Yin Jiang,Zhi-Lin Zhang 대한금속·재료학회 2016 ELECTRONIC MATERIALS LETTERS Vol.12 No.1
Amorphous LaZnSnO thin films with different La doping concentrationare prepared by a combustion solution process and theelectrical performances of thin film transistors (TFTs) areinvestigated. The influence of La content on the structure, oxygenvacancies, optical and electrical performance of LaZnSnO thinfilms are investigated. At an appropriate amount of La doping(15 mol.%), LaZnSnO-TFT shows a superior electrical performanceincluding a mobility of 4.2 cm2/V s, a subthreshold swing of 0.50 V/decade and an on/off current ratio of 1.9 × 107. The highperformance LaZnSnO-TFT is attributed to the better interfacebetween SiO2 and LaZnSnO channel layer and the suppression ofoxygen vacancies by optimizing La content. It suggests that Ladoping can be a useful technique for fabricating high performancesolution-processed oxide TFTs.
Improving the electrical performance of HfInZnO-TFTs by introducing a thin ITO interlayer
Jun Li,Xing-Wei Ding,Jianhua Zhang,Wen-Qing Zhu,Xue-Yin Jiang,Zhi-Lin Zhang 한국물리학회 2014 Current Applied Physics Vol.14 No.8
We have fabricated hafniumeindiumezinc-oxide (HfInZnO) thin film transistors (TFT) with indiumetinoxide (ITO) interlayer. Compared with conventional HfInZnO-TFT, the electrical performance and bias stability of HfInZnO-TFTs with ITO interlayer are improved. HfInZnO-TFT with 4-nm-thick ITO interlayer shows a high mobility of 7.2 cm2/V s, a low threshold voltage of 0.13 V and a better bias stability. The performance enhancement is attributed to a decrease in interface trap state and an increase in carrier concentration. It suggests that introducing ITO interlayer at the ALD Al2O3/HfInZnO interface is an effective way to improve the electrical performance and bias stability.
Magnetic Anisotropies in Cobalt-Nickel Ferrites (NixCo1-xFe2O4)
Binghai Liu,Jun Ding,Jiabao Yi,Jianhua Yin,Zhili Dong 한국물리학회 2008 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.52 No.5
This work presents a detailed study on the various magnetic anisotropies of NixCo1..xFe2O4 prepared by using a mechanochemical process. The results indicated that the magnetic anisotropy of NixCo1..xFe2O4 was strongly correlated with the Co2+ concentration. The Ni2+ substitution readily led to a decrease in the magnetocrystalline anisotropy and coercivity. While a large uniaxial anisotropy was induced in CoFe2O4 by magneto-annealing, the uniaxial anisotropy decreased with the Ni concentration in NixCo1..xFe2O4 and disappeared in the pure NiFe2O4. A short-time mechanical milling was found to signicantly increase the coercivity in NixCo1..xFe2O4 samples and high coercivities of 5.1 kOe and 2.8 kOe were achieved in the CoFe2O4 and the Ni0:5Co0:5Fe2O4 samples respectively. The microstructure and magnetic studies indicated that the milling-induced high coercivity could be ascribed to milling-induced stress anisotropy and to the pinning eects of defects. This work presents a detailed study on the various magnetic anisotropies of NixCo1..xFe2O4 prepared by using a mechanochemical process. The results indicated that the magnetic anisotropy of NixCo1..xFe2O4 was strongly correlated with the Co2+ concentration. The Ni2+ substitution readily led to a decrease in the magnetocrystalline anisotropy and coercivity. While a large uniaxial anisotropy was induced in CoFe2O4 by magneto-annealing, the uniaxial anisotropy decreased with the Ni concentration in NixCo1..xFe2O4 and disappeared in the pure NiFe2O4. A short-time mechanical milling was found to signicantly increase the coercivity in NixCo1..xFe2O4 samples and high coercivities of 5.1 kOe and 2.8 kOe were achieved in the CoFe2O4 and the Ni0:5Co0:5Fe2O4 samples respectively. The microstructure and magnetic studies indicated that the milling-induced high coercivity could be ascribed to milling-induced stress anisotropy and to the pinning eects of defects.