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Atmospheric Environmental Quality Prediction Based on Support Vector Machine

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Journal of Chemistry and Chemical Engineering 2010年第2期4卷 1-6页

作者： peng zhong Department of Electronic Systems and Electrical Systems Ecole Polytechnique University of Nantes Nantes 44600 France Department of Engineering Thermophysics South China University of Technology Guangzhou 510641 China

The economic development bring serious environmental problems to China, the quality of atmospheric environment has an important bearing on the forecast. Be aimed at the complexity and non-linear of the quality of atmospheric environment, chaos theory has been put forward which takes full advantage of using date information. Based on the reconstruction of time-series phase space of the quality of atmospheric environment with the use of least squares support vector machine theory, the atmospheric environment prediction model was built up, and 25 years of historical data viewed as the raw data of the quality of the environment in Benxi City, giving a practical example, it shows that the results forecasted by the least squares support vector machine and the actual results match the better the forecast accuracy also meet the engineering application.

关键词： Environmental quality time series phase space support vector machine.

Screening of Substrates of Protein Arginine Methyltransferase 1 in Glioma

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Chinese Medical Sciences Journal 2012年第1期27卷 1-6页

作者： Shan Wang Xiao-chao Tan Bin Yang Bin Yin Xiao-zhong peng National Laboratory of Medical Molecular Biology Institute of Basic Medical SciencesChinese Academy of Medical Sciences&Peking Union Medical CollegeBeijing 100005China

Objective To screen the asymmetric dimethyl arginines (ADMA)-containing proteins which could combine with protein arginine methyltransferase 1 (PRMT1). Methods Western blot was adopted to identify the expression of PRMT1 and the proteins with ADMA in glioma cell lines and normal brain tissues, and then to detect the changes of ADMA level after knock-down of PRMT1 with RNAi transfection in U87MG cells. Co-Immunoprecipitation (Co-IP), western blot, and sliver staining were employed to screen the candidate binding proteins of PRMT1. Then liquid chromatography-tandem mass spectrometry (LC-MS/MS) was used to identify the binding proteins of PRMT1. Results The expression of PRMT1 and some levels of ADMA were higher in glioma cell lines than in normal brain tissues. After knocking down PRMT1, some ADMA levels were found declined. After screening the binding proteins of PRMT1 with Co-IP and LC-MS/MS, 26 candidate binding proteins were identified. Among them, 6 candidate proteins had higher ions scores (>38) and bioinformation analysis predicted that SEC23-IP, ANKHD1-EIF4EBP3 protein, and 1-phosphatidylinositol-3-phosphate 5-kinase isoform 2 had possible methylated aginine sites. Conclusions The high expression of PRMT1 in glioma may induce the change of ADMA levels. Altogether 26 candidate proteins were identified, which contain ADMA and specifically bind with PRMT1.

关键词： protein arginine methyltransferase 1 asymmetric dimethyl arginines liquidchromatography-tandem mass spectrometry

Nectin-like Molecule 1 Inhibits the Migration and Invasion of U251 Glioma Cells by Regulating the Expression of An Extracellular Matrix Protein Osteopontin

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Chinese Medical Sciences Journal 2010年第2期25卷 100-104页

作者： Bin Yin Ke-han Li Tai An Tao Chen Xiao-zhong peng National Laboratory of Medical Molecular Biology Institute of Basic Medical Sciences Chinese Academy of Medical Sciences ＆ Peking Union Medical College Beijing 100005 China

Objective To investigate the molecular mechanism of nectin-like molecule 1(NECL1) inhibiting the migration and invasion of U251 glioma *** We infected U251 glioma cells with adeno-nectin-like molecule 1(Ad-NECL1) or empty adenovirus(Ad).Transwell and wound healing assays were performed to observe the migration of U251 cells incubated with the cell supernatant from Ad-NECL1 or Ad infected U251 *** microarray was applied to screen the gene expression profile after the restoration of NECL1 in U251 glioma cell *** differential expression of osteopontin(OPN),a gene related to migration and invasion,was further analyzed with semi-quantitative reverse transcription-polymerase chain reaction(RT-PCR),Western blot,and *** The restoration of NECL1 inhibited migration of U251 cells significantly(P<0.05).Altogether 195 genes were found differentially expressed by microarray,in which 175 were up-regulated and 20 down-regulated,including 9 extracellular matrix proteins involved in the migration of *** mRNA and protein expressions of OPN,the most markedly reduced extracellular matrix protein,were found decreased in U251 cells after restoration of *** assay also detected an increase of OPN in glioma tissues,related with the progressing of malignant *** A link might exist between NECL1 and the extracellular matrix protein OPN in inhibiting the migration and invasion of U251 glioma cells.

关键词： nectin-like molecule 1 glioma cell line extracellular matrix protein osteopontin

Effects of Input Redundancy on Time Optimal Control

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自动化学报 2011年第2期37卷 222-227页

作者： peng zhong-Xing YANG Ying HUANG Lin State Key Laboratory for Turbulence and Complex Systems Department of Mechanics and Aerospace Engineering College of Engineering Peking University Beijing 100871 P. R. China

由于有输入冗余性的系统的流行，这份报纸与输入冗余性集中于这些问题，在我们关于增加新输入冗余性进可控制的系统的效果担心的地方。预定最佳的控制问题被讨论，在如此的效果到最佳的时间被评估的地方。基于存在的假设和最佳的控制的... 详细信息

由于有输入冗余性的系统的流行，这份报纸与输入冗余性集中于这些问题，在我们关于增加新输入冗余性进可控制的系统的效果担心的地方。预定最佳的控制问题被讨论，在如此的效果到最佳的时间被评估的地方。基于存在的假设和最佳的控制的唯一，如果，纸证明增加输入冗余性的数字将从一样的起始的状态导致最佳的时间的严格的减小在那里存在在冗余的输入隧道之中的非闲散的隧道。而且如果这个问题是正常的，那么所有冗余的输入隧道被用来弄短最佳的时间。在另一方面没有规度的假设，最佳的时间将也作为如果至少一条这些冗余的输入隧道是完全可控制的，比作原来的系统为冗余的系统是更小的。最后，二个数字例子被部署表明这份报纸的主要结果。

关键词：冗余系统自动化系统时间最优控制控制系统

Isobaric Vapor-Liquid Equilibrium of Binary Systems： p-Xylene ＋（Acetic Acid, Methyl Acetate and n-Propyl Acetate） and Methyl Acetate ＋ n-Propyl Acetate in an Acetic Acid Dehydration Process

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Chinese Journal of Chemical Engineering 2013年第2期21卷 171-176页

作者： HUANG Xiuhui zhong Weimin peng Changjun QIAN Feng Key Laboratory of Advanced Control and Optimization for Chemical Processes Ministry of Education East China University of Science and Technology Shanghai 200237 China

The vapor-liquid equilibrium data of four binary systems (acetic acid +p-xylene, methyl acetate +n-propyl acetate, n-propyl acetate +p-xylene and methyl acetate +p-xylene) are measured at 101.33 kPa with Ellis equilibrium still, and then both the NRTL and UNIQUAC models are used in combination with the HOC model for correlating and estimating the vapor-liquid equilibrium of these four binary systems. The estimated binary VLE results using correlated parameters agree well with the measured data except the methyl acetate +p-xylene system which easily causes bumping and liquid rushing out of the sampling tap due to their dramatically different boiling points. The correlation results by NRTL and UNIQUAC models have little difference on the average absolute deviations of temperature and composition of vapor phase, and the results by NRTL model are slightly better than those by UNIQUAC model except for the methyl acetate +n-propyl acetate system, for which the latter gives more accurate correlations.

关键词： vapor-liquid equilibrium p-xylene acetic acid methyl acetate n-propyl acetate parameter correlation

Progress in in-situ electrochemical nuclear magnetic resonance for battery research

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Magnetic Resonance Letters 2024年第2期4卷 13-21页

作者： Yong Jiang Mengmeng Zhao Zhangquan peng Guiming zhong Laboratory of Advanced Spectro-electrochemistry and Li-ion Batteries Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian116023China University of Chinese Academy of Sciences Beijing100049China Tianmu Lake Institute of Advanced Energy Storage Technologies Co. Ltd.Liyang213300China

A thorough understanding of the fundamental electrochemical and chemical processes in batteries is crucial to advancing energy density and power ***,the characterizations of such processes are ***-situ electrochemical nuclear magnetic resonance(EC-NMR)offers the capability to collect real-time data during battery operation,furnishing insights into the local structures and ionic dynamics of materials by monitoring changes in the chemical environment around the ***-NMR also has the advantages of being both quantitative and *** paper systematically reviews the design of EC-NMR approach,and delves into the applications and progress of EC-NMR concerning battery reaction mechanisms,failure mechanisms,and overall battery *** review culminates in a comprehensive summary of the perspective and challenges associated with EC-NMR.

关键词： In-situ NMR Reaction mechanism Failure mechanism Battery systems Ionic dynamics

Restraint effect of partition wall on the tunnel floor heave in layered rock mass

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Journal of Mountain Science 2024年第7期21卷 2462-2479页

作者： YANG Yunyun HUANG Da zhong Zhu LIU Yang peng Jianbing School of Civil and Transportation Engineering Hebei University of TechnologyTianjin 300401China College of Geology Engineering and Geomatics Chang’an UniversityXi’an 710054China College of Civil Engineering&Architecture China Three Gorges UniversityYichang 443002China.

The presence of horizontal layered rocks in tunnel engineering significantly impacts the stability and strength of the surrounding rock mass,leading to floor heave in the *** study focused on preparing layered specimens of rock-like material with varying thickness to investigate the failure behaviors of tunnel *** results indicate that thin-layered rock mass exhibits weak interlayer bonding,causing rock layers near the surface to buckle and break upwards when subjected to horizontal *** an increase in the layer thickness,a transition in failure mode occurs from upward buckling to shear failure along the plane,leading to a noticeable reduction in floor heave *** primary cause of significant deformation in floor heave is upward buckling *** address this issue,the study proposes the installation of a partition wall in the middle of the floor to mitigate heave deformation of the rock *** results demonstrate that the partition wall has a considerable stabilizing effect on the floor,reducing the zone of buckling failure and minimizing floor heave *** is crucial for the partition wall to be sufficiently high to prevent buckling failure and ensure *** simulation calculations on an engineering example,it is confirmed that implementing a partition wall can effectively reduce floor heave and enhance the stability of tunnel floor.

关键词： Layered rock Floor heave Horizontal compression test Failure behavior Partition wall

Synthesis of spherical LiNi_(0.8)Co_(0.15)Al_(0.05)O_2 cathode materials for lithium-ion batteries by a co-oxidation-controlled crystallization method

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Chinese Chemical Letters 2011年第9期22卷 1099-1102页

作者： Wan Min Liu Guo Rong Hu zhong Dong peng Ke Du Yan Bing Cao Qiang Liu School of Metallurgical Science and Engineering Central South University Changsha 410083 China School of Chemistry and Chemical Engineering Hunan Institute of Engineering Xiangtan 411104 China

Spherical LiNi0.8Co0.15Al0.05O2 OOH precursor prepared by a co-oxidation-controlled crystallization method, was used to synthesize LiNi0.5Co0.15Al0.05O2. The obtained LiNi0.8Co0.15Al0.05O2 materials showed excellent electrochemical performance, with an initial discharge capacity of 193.5 mAh/g and capacity retention of 95.1% after 50 cycles when cycled at 0.2 C rate between 2.8 and 4.3 V.

关键词： Li-ion battery Cathode material LiNi0.8Co0.15Al0.05O2 Co-oxidation-controlled crystallization

苜蓿黄酮的提取方法、生物活性及其在动物生产中的应用

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饲料研究 2024年第2期47卷 162-165页

作者：李伟刘泽东高海娟孙蕊王若丁钟鹏赵金波黑龙江省农业科学院畜牧兽医分院黑龙江齐齐哈尔161005

黄酮是苜蓿重要的活性成分之一,具有抗炎、抗菌、抗病毒、抗氧化和免疫调节等多种功效,能够提高动物的生长性能,增强免疫力,改善畜产品品质,减少应激,预防和治疗疾病,在畜牧业中应用前景广阔。文章介绍了苜蓿黄酮的常用提取方法和生物活... 详细信息

黄酮是苜蓿重要的活性成分之一,具有抗炎、抗菌、抗病毒、抗氧化和免疫调节等多种功效,能够提高动物的生长性能,增强免疫力,改善畜产品品质,减少应激,预防和治疗疾病,在畜牧业中应用前景广阔。文章介绍了苜蓿黄酮的常用提取方法和生物活性,综述了苜蓿黄酮在反刍动物、家禽和猪养殖中的应用研究进展,为苜蓿黄酮在畜禽生产中的进一步开发与利用提供参考。

关键词：苜蓿黄酮提取方法生物活性动物生产

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