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Hybrid Patterns Recognition of Control Chart Based on WA-PCA-PSO-SVM
Liu Yan-zhong,Zhang Hong-lie,Liu Yan-ju,Jiang Jin-gang 보안공학연구지원센터 2014 International Journal of Control and Automation Vol.7 No.10
Based on the analysis of the defect of traditional model, this paper proposes a new control chart pattern recognition model, which includes Wavelet Analysis (WA), Principal Component Analysis (PCA), Particle Swarm Optimization (PSO) and Support Vector Machine (SVM). WA is good to eliminate noise control chart anomaly pattern recognition of the adverse effect. PCA eliminates the redundant information of data between SVM and reduces the input dimension and computational complexity. PSO algorithm optimizes the parameters of SVM and the establishment of the optimal control chart anomaly pattern classifier can solve the problem optimal parameters of SVM. The simulation results show that the model is feasible, the results are reliable. This algorithm improves the control chart abnormal state average recognition accuracy and be used in the machining process real-time monitoring.
Zhong-Liu Zhou,Wen-Qing Yin,Xiao-Peng Zou,Dan-Ying Huang,Cui-Liu Zhou,Lian-Mei Li,Ke-Cheng Chen,Zi-Ying Guo,San-Qing Lin 한국응용생명화학회 2014 Applied Biological Chemistry (Appl Biol Chem) Vol.57 No.6
The extraction and solvent partition of the leaves ofEucalyptus citriodora, and repeated column chromatography for n-BuOH fraction yielded a new flavonoid glycoside, citrioside C (1),along with three known flavonoid glycosides (2-4). The latter wereidentified with kaempferol-3-O-β-D-glucopyranosyl (12)-α-L-rhamnoside(2), kaempferol-3-O-α-L-rhamnoside (3), and quercetin-3-O-α-Lrhamnoside(4). Their chemical structures were identified on thebasis of spectroscopic data analyses including NMR, MS, UV, andIR. All constitutents were isolated for the first time from the leavesof Eucalyptus citriodora. The potential antivirus activity of all theisolated compounds was evaluated. Compound 4 showed potentantiviral activity against respiratory syncytial virus with 50%inhibition concentration (IC50) value of 1.9 μg/mL and selectiveindex value of 9.8.
Expression of IER3 in Primary Hepatocarcinoma: Correlation with Clinicopathological Parameters
Liu, Zhong,Wang, Xin-Mei,Jia, Tong-Fu,Zhai, Yi,Sun, Ling-Yan,Cheng, Yu-Ping,Zhang, Yue-Min,Liu, Shi-Hai,Liang, Jun Asian Pacific Journal of Cancer Prevention 2015 Asian Pacific journal of cancer prevention Vol.16 No.2
Background: Studies indicate the immediate early response gene 3 (IER3) is involved in many biological processes. Recently, it was discovered that IER3 plays an important role in tumorigenesis and tumor progression. Thus it may be a valuable biomarker in tumor. This study was designed to investigate the expression status of IER3 in primary hepatocarcinoma (PHC) and correlation with clinicopathological parameters. Materials and Methods: Real-time PCR was performed to evaluate the expression levels of IER3 in 62 pathologically diagnosed human PHC specimens. Results: A statistically significant association was disclosed between the expression of IER3 and P53 mutant protein (short for P53), Ki-67, EGFR and the biggest diameter, differentiation grade of tumor. Conclusions: This work is the first to shed light on the potential clinical usefulness of IER3, as an efficient tumor biomarker in PHC.
Important Factors on Carbon Dioxide Reforming of Methane over Nickel-Based Catalysts
Liu, Zhong-Wen,Roh, Hyun-Seog,Jun, Ki-Won 한국공업화학회 2003 Journal of Industrial and Engineering Chemistry Vol.9 No.6
Some factors such as catalyst, temperature, space velocity, feed CO₂/CH₄ ratio, H₂0 and/or O₂addition, have been examined for stable operation of carbon dioxide reforming of CH₄ (CDR) in a fixed-bed reactor under atmospheric pressure. The Ni/Ce-ZrO₂/θ?- A1₂0₃ catalyst showed high activity and stability under all the conditions employed compared with Ni/MgA1₂0₄. This seems to be due to strong interactions between NiO and support and relatively abundant mobile oxygen species in the Ce-ZrO₂ layer: the former would suppress carbon formation step and the latter would activate the carbon elimination step. The carbon deposition over the catalysts in CDR was drastically reduced with a slight increase of feed COdCH4 ratio or the addition of HrO in feed. The oxidation of CH₄ and/or steam reforming of CH₄ occurred simultaneously with carbon dioxide reforming of CH₄, where drastic change of a H₂/CO ratio was observed, when the feed was composed of CH₄, CO₂, H2O and/or O₂.
p38 MAPK Signaling Mediates Mitochondrial Apoptosis in Cancer Cells Induced by Oleanolic Acid
Liu, Jia,Wu, Ning,Ma, Lei-Na,Zhong, Jia-Teng,Liu, Ge,Zheng, Lan-Hong,Lin, Xiu-Kun Asian Pacific Journal of Cancer Prevention 2014 Asian Pacific journal of cancer prevention Vol.15 No.11
Oleanolic acid (OA) is a nutritional component widely distributed in various vegetables. Although it has been well recognized for decades that OA exerts certain anti-tumor activity by inducing mitochondria-dependent apoptosis, it is still unclear that what molecular signaling is responsible for this effect. In this study, we employed cancer cell lines, A549, BXPC-3, PANC-1 and U2OS to elucidate the molecular mechanisms underlying OA anti-tumor activity. We found that activation of MAPK pathways, including p-38 MAPK, JNK and ERK, was triggered by OA in both a dose and time-dependent fashion in all the tested cancer cells. Activation was accompanied by cleavage of caspases and PARP as well as cytochrome C release. SB203580 (p38 MAPK inhibitor), but not SP600125 (JNK inhibitor) and U0126 (ERK inhibitor), rescued the pro-apoptotic effect of OA on A549 and BXPC-3 cells. OA induced p38 MAPK activation promoted mitochondrial translocation of Bax and Bim, and inhibited Bcl-2 function by enhancing their phosphorylation. OA can induce reactive oxygen species (ROS)-dependent ASK1 activation, and this event was indispensable for p38 MAPK-dependent apoptosis in cancer cells. In vivo, p38 MAPK knockdown A549 tumors proved resistant to the growth-inhibitory effect of OA. Collectively, we elucidated that activation of ROS/ASK1/p38 MAPK pathways is responsible for the apoptosis stimulated by OA in cancer cells. Our finding can contribute to a better understanding of molecular mechanisms underlying the antitumor activity of nutritional components.
Mining Proteins Associated with Oral Squamous Cell Carcinoma in Complex Networks
Liu, Ying,Liu, Chuan-Xia,Wu, Zhong-Ting,Ge, Lin,Zhou, Hong-Mei Asian Pacific Journal of Cancer Prevention 2013 Asian Pacific journal of cancer prevention Vol.14 No.8
The purpose of this study was to construct a protein-protein interaction (PPI) network related to oral squamous cell carcinoma (OSCC). Each protein was ranked and those most associated with OSCC were mined within the network. First, OSCC-related genes were retrieved from the Online Mendelian Inheritance in Man (OMIM) database. Then they were mapped to their protein identifiers and a seed set of proteins was built. The seed proteins were expanded using the nearest neighbor expansion method to construct a PPI network through the Online Predicated Human Interaction Database (OPHID). The network was verified to be statistically significant, the score of each protein was evaluated by algorithm, then the OSCC-related proteins were ranked. 38 OSCC related seed proteins were expanded to 750 protein pairs. A protein-protein interaction nerwork was then constructed and the 30 top-ranked proteins listed. The four highest-scoring seed proteins were SMAD4, CTNNB1, HRAS, NOTCH1, and four non-seed proteins P53, EP300, SMAD3, SRC were mined using the nearest neighbor expansion method. The methods shown here may facilitate the discovery of important OSCC proteins and guide medical researchers in further pertinent studies.
Carbon Dioxide Reforming of Methane over Ni/La₂O₃/Al₂O₃
Zhong-Wen Liu,Hyun-Seog Roh,전기원 한국공업화학회 2003 Journal of Industrial and Engineering Chemistry Vol.9 No.3
The precoating effect of La2O3 on the performance of Ni/-Al2O3 catalyst for carbon dioxide reforming of CH4 was investigated. All the catalysts showed a fairly good stability while the addition of La2O3 significantly improved the activity of Ni/-Al2O3. Ni/La2O3/Al2O3 catalysts had an optimum amount of La2O3 loading with a La/Al ratio of 0.05 with the highest activity and stability. The catalysts were characterized by BET, XRD, XPS and TPR techniques. The phase of the precoated La2O3 was changed from highly dispersed La species to well crystallized LaAlO3 with increasing La/Al ratio. The interaction between Ni and the support was changed with the addition of La2O3 and the variation of La/Al ratio. Based on the characterization results, the promotional effect of La2O3 on Ni/-Al2O3 resulted from (1) the chemical environment and electronic state of Ni in Ni-La interface, (2) the stabilization of La2O3 on Al2O3 and (3) the strong basicity of La2O3. It was suggested that the highly dispersed La species is more effective than LaAlO3 for the promotional effect of La2O3.