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Seven microcystins from Microcystis waterbloom in Lake Dalai,china

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Journal of Environmental sciences 1997年第1期9卷 113-119页

作者： He Zhenrong He Jiawan Yu Minjuan Institute of Hydrobiology,Chinese Academy of sciences,Wuhan 430072,chinaQiao Mingye Shen Zhi Wu Liandi inner mongolia Environmental Science Research Instìtute,Huhehote 010010,chinaWu Suozhu Guo Yunfeng Hulunbeer League Environmental Monitoring Station,inner Mogolia 021008,chinaFumio Kondo Aichi Prefectural Institute of Public Health,Tsuji-machi,Kita-ku,Nagoya 462,JapanKen-ichi Harada faculty of Pharmacy,Meijo university,Tempaku,Nagoya 468,Japan Institute of Hydrobiology Chinese Academy of Sciences Wuhan 430072 China inner mongolia Environ. Sci. Res. I. Huhehote 010010 China Hulunbeer League Environ. M.S. Inner Mogolia 021008 China Aichi Pref. Inst. of Public Health Tsuji-machi Kita-ku Nagoya 462 Japan faculty of Pharmacy Meijo University Tempaku Nagoya 468 Japan

Seven types of microcystins,isolated from Microcystis waterbloom in Lake Dalai, were *** major toxins:MCYST-LR,MCYST-RR,[D-Asp^3]MCYST-LR and [Dha^7]MCYST-LR were identified by high performance liquid chromatography(HPLC),as com- pared with the authentic *** minor toxins:MCYST FR,[L-Mser^7]MCYST-LR and an unknown MCYST which was most likely to be MCYST-(H_4)YR were identified with frit- fast atom bombardment liquid chromatography/mass spectrometry(Frit-FAB LC/MS)and amino acid *** toxigenic diversity in blue-green algae(cyanobacteria)was discussed.

关键词： microcystin cyanobacteria waterbloom identification Frit-FAB LC/MS.

Parallel Synthesis and Antimicrobial Activities of Gramicidine S and its Analogues

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Parallel Synthesis and Antimicrobial Activities of Gramicidi...

基于Hopfield网络学习的多城市旅行商问题的解法

2006中国微生物学会第九次全国会员代表大会暨学术年会

作者： Yan Ding, Chuan-Guang qin , rui-Jie Zhang, Yang Li faculty of life Science, Northwestern Polytechnical university, Xi’an 710072, Shaanxi, china

Gramicidin S is a cyclic decapeptide antibiotic which is produced by Bacillus brevis. In this paper, a novel method is described for the facile parallel synthesis of gramicidin S and its analogues, using standard solid-phase synthetic technology and a direct cyclization-cleavage step. Compared with previous approaches, the presented

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系统工程理论与实践 2003年第7期23卷 100-105页

作者：金海和陈剑唐政郑国旗内蒙古大学公共管理学院内蒙古呼和浩特010021 清华大学经济管理学院北京100084 富山大学工学部内蒙古大学电子工程系内蒙古呼和浩特010021

针对 Hopfield神经网络 ( HNN)学习算法难以求解大规模组合优化问题的不足 ,提出了基于HNN学习的多城市旅行商问题的求解算法 .它是把 HNN学习算法作基本算子 ,对城市群体按一定的规则进行有效的分割、计算和连接 ,来寻找巡回路径的最... 详细信息

针对 Hopfield神经网络 ( HNN)学习算法难以求解大规模组合优化问题的不足 ,提出了基于HNN学习的多城市旅行商问题的求解算法 .它是把 HNN学习算法作基本算子 ,对城市群体按一定的规则进行有效的分割、计算和连接 ,来寻找巡回路径的最优解或满意解 .并以 1 0 0城市的旅行商问题为例进行了仿真实验 ,验证了算法的有效性 .该算法不受求解问题的规模限制 ;还可通过并列运算实现高速化 ;同时因算法简明 ,易于硬件实现 .

关键词： Hopfield神经网络学习学习算子组合优化问题极小值问题多城市旅行商问题

An Integrated Carbon Dioxide Capture and Methanation Process

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CCS Chemistry 2024年第5期6卷 1174-1183页

作者： Xiaochen Zhang Mengzhu Li Xingwu Liu Ang Li Yuchen Deng Mi Peng Yu Zhang Charlotte Vogt matteo Monai Junxian Gao Xuetao qin Yao Xu Qiaolin Yu Meng Wang Guofu Wang Zheng Jiang Xiaodong Han Casper Brady Wei-Xue Li Wu Zhou Jin-Xun Liu Bingjun Xu Bert M.Weckhuysen Ding ma Beijing National Laboratory for Molecular sciences College of Chemistry and Molecular EngineeringPeking UniversityBeijing 100871 china Academy of Aerospace Science and Innovation Beijing 100088 National Energy Center for Coal to Liquids Synfuels China Co.Ltd.Beijing 101400 Beijing Key Laboratory of Microstructure and Property of Advanced materials Beijing University of TechnologyBeijing Inorganic Chemistry and Catalysis group Institute for Sustainable and Circular Chemistry and Debye Institute for Nanomaterials ScienceFaculty of ScienceUtrecht University3584 CG Utrecht State Key Laboratory of Coal Conversion Institute of Coal ChemistryChinese Academy of SciencesTaiyuan 030001 Shanghai Synchrotron Radiation Facility Zhangjiang LadShanghai Advanced Research InstituteChinese Academy of SciencesShanghai 201210 Center for Catalytic Science and Technology University of DelawareNewarkDelaware 19716 Key Laboratory of Precision and Intelligent Chemistry School of Chemistry and Materials ScienceUniversity of Science and Technology of ChinaHefeiAnhui 230026 Hefei National Laboratory University of Science and Technology of ChinaHefei 230088 School of Physical sciences CAS Key Laboratory of Vacuum PhysicsUniversity of Chinese Academy of SciencesBeijing 100049

Reducing the ever-growing level of CO_(2)in the atmosphere is critical for the sustainable development of human society in the context of global *** of the capture and upgrading of CO_(2)is,therefore,highly desirable since each process step is costly,both energetically and ***,we report a CO_(2)direct air capture(DAC)and fixation process that produces *** concentrations of CO_(2)(∼400 ppm)in the air are captured by an aqueous solution of sodium hydroxide to form *** carbonate is subsequently hydrogenated to methane,which is easily separated from the reaction system,catalyzed by TiO2-supported Ru in the aqueous phase with a selectivity of 99.9%among gas-phase *** concurrent regenerated hydroxide,in turn,increases the alkalinity of the aqueous solution for further CO_(2)capture,thereby enabling this one-ofits-kind continuous CO_(2)capture and methanation *** simulations demonstrate the energy feasibility of this CO_(2)DAC and methanation process,highlighting its promise for potential largescale applications.

关键词： CO_(2)capture and methanation process sodium hydroxide carbonate Ru/TiO_(2) catalytic mechanism CO_(2)activation and hydrogenation

Association of preoperative antiviral treatment with incidences of post-hepatectomy liver failure in hepatitis B virus-related hepatocellular carcinoma

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World Journal of Gastrointestinal Surgery 2024年第7期16卷 2106-2118页

作者： Xiao Wang Zhao-Yi Lin You Zhou qin Zhong Zong-Ren Li Xi-Xiang Lin Ming-Gen Hu Kun-Lun He Medical Big Data Research Center Chinese PLA General HospitalBeijing 100853China Medical School of Chinese PLA Chinese PLA General HospitalBeijing 100853China Department of Hepatobiliary Surgery Chinese PLA 970th HospitalYantai 264001Shandong ProvinceChina faculty of Hepato-Pancreato-Biliary Surgery The First Medical Center of Chinese PLA General HospitalBeijing 100853China School of Medicine Nankai UniversityTianjin 300071China

BACKGROUND Post-hepatectomy liver failure(PHLF)is a common consequence of radical partial hepatectomy in hepatocellular carcinoma(HCC).AIMS To investigate the relationship between preoperative antiviral therapy and PHLF,as well as assess the potential efficacy of hepatitis B virus(HBV)DNA level in predicting *** A retrospective study was performed involving 1301 HCC patients with HBV who underwent radical *** operating characteristic(ROC)analysis was used to assess the capacity of HBV DNA to predict PHLF and establish the optimal cutoff value for subsequent *** regression analyses were performed to assess the independent risk factors of *** increase in the area under the ROC curve,categorical net reclassification improvement(NRI),and integrated discrimination improvement(IDI)were used to quantify the efficacy of HBV DNA level for predicting *** Pmal cutoff value of 269 IU/mL(Pmary,preoperative antiviral treatment can reduce the incidence of PHLF,whereas an increased preoperative HBV DNA level has a correlative relationship with an increased susceptibility to PHLF.

关键词： Hepatocellular carcinoma Hepatitis B virus Preoperative antiviral treatment Liver resection Post-hepatectomy liver failure

Novel Binding Mode of Src Homology-2 (SH2) Domains

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Novel Binding Mode of Src Homology-2 (SH2) Domains

Influence of stacking fault energy on formation of long period stacking ordered structures in Mg-Zn-Y-Zr alloys

第五届全国化学生物学学术会议

作者： Chuanguang qin faculty of life Science,Northwestern Polytechnical university,Xi’an,Shanxi,710072

Almost all binding motifs of the Src homology-2(SH2)domains found previously are C-terminal sequences relative to pY residue,but an alternative binding mode of SH2 domains is reported here.A phosphotyrosyl(pY) peptide library containing completely N-terminal randomized residues at positions-5 to-1 relative to the pY was synthesized on TentaGel resin,with a unique peptide sequence on each resin bead(total 2.5×10 different

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Progress in Natural Science:materials International 2011年第6期21卷 485-490页

作者： Fu-sheng PAN~(1,2),Su-qin LUO~1,Ai-tao TANG~(1,2),Jian PENG~(1,2),Yun LU~3 1.College of materials Science and Engineering,Chongqing university,Chongqing 400044,china 2.National Engineering Research Center for magnesium Alloys,Chongqing university,Chongqing 400044,china 3.faculty of Engineering,Chiba university,Chiba 263-8522,Japan [a] College of materials Science and Engineering Chongqing University Chongqing 400044 China [b] National Engineering Research Center for magnesium Alloys Chongqing University Chongqing 400044 China [c] faculty of Engineering Chiba University Chiba 263-8522 Japan

The influence of alloying elements on the stacking fault energy（SFE） of Mg-Y-Zn-Zr alloys was calculated by using first-principles,and the microstructure of as-cast Mg-1.05Y-0.79Zn-0.07Zr（mole fraction,%） alloy prepared by conventional casting was investigated by SEM,TEM and *** block-like long period stacking ordered（LPSO） phase,the lamellar LPSO phase and stacking faults were observed simultaneously and the lamellar LPSO structure and stacking faults were both formed on （0001）α-Mghabit plane and grown or extended along[01 1 0]α-*** calculation results by the first-principles showed that the addition of Y can sharply decrease the stacking fault energy of the Mg-Zn-Y-Zr alloy,while Zn slightly increases the stacking fault energy of the *** influence of stacking fault energy on the formation of LPSO was *** shows that LPSO may nucleate directly through stacking faults and the lower stacking fault energy was in favor of formation of LPSO.

关键词： magnesium alloy Mg-Zn-Y-Zr long period stacking ordered(LPSO) structures stacking fault energy(SFE) firstprinciples calculation

Application of Wavelet Analysis toInterference Elimination for Geochemical Hydrocarbon Exploration

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Journal of Earth Science 2000年第1期19卷 91-93页

作者： Zhang Liuping Ruan Tianjian faculty of Earth Resources, china university of Geosciences, Wuhan 430074

Interference in the data of geochemical hydrocarbon exploration is a large obstacle for anomaly recognition. The multiresolution analysis of wavelet analysis can extract the information at different scales so as to provide a powerful tool for information analysis and processing. Based on the analysis of the geometric nature of hydrocarbon anomalies and background, mallat wavelet and symmetric border treatment are selected and data pre-processing (logarithm-normalization) is established. This approach provide good results in Shandong and inner mongolia, china. It is demonstrated that this approach overcome the disadvantage of backgound variation in the window (interference in window), used in moving average, frame filtering and spatial and scaling modeling methods.

关键词： geochemical exploration petroleum exploration interference elimination wavelet analysis data processing anomaly recognition.

教育强国背景下基础教育高质量发展的生态建构——基于创新生态系统理论

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中国教育科学（中英文） 2024年第2期7卷 33-42页

作者：覃创覃春广西师范大学教育学部桂林541001 安顺学院外国语学院安顺561000

教育强国建设的基点是基础教育,基础教育高质量发展须形成健康的教育环境和生态。从创新生态系统理论视域来看,基础教育高质量发展生态结构框架可划分为微观层面、中观层面和宏观层面,其具有持续发展性、多维复杂性、动态调控性的特征,... 详细信息

教育强国建设的基点是基础教育,基础教育高质量发展须形成健康的教育环境和生态。从创新生态系统理论视域来看,基础教育高质量发展生态结构框架可划分为微观层面、中观层面和宏观层面,其具有持续发展性、多维复杂性、动态调控性的特征,体现出自我优化、动态赋能和政策引领的驱动逻辑。可从三方面探寻基础教育高质量发展的生态建构路径:坚持有机整合,促进基础教育内部优质均衡发展;推进协同发展,形塑融合共生的教育生态场域;聚焦政策落实,强化基础教育生态建构的治理效能。

关键词：基础教育创新生态系统生态建构