检索结果-南通市图书馆

LA-(MC)-ICPMS U-Pb zircon geochronology and Lu-Hf isotope compositions of the Taihua complex on the southern margin of the North China Craton

引用

Chinese Science Bulletin 2010年第23期55卷 2557-2571页

作者： DIWU ChunRong SUN yong lin CiLuan wang HongLiang State Key Laboratory of Continental Dynamics Department of Geology Northwest University Xi'an 710069 China

Widely distributed on the southern margin of the North China Craton,the Taihua complex extends roughly in an east-west direction and the relatively complete successions are found in Lushan County,Henan *** many other Archean terranes,the Taihua Complex can be divided into two major lithological units along the Dangze River,namely gneisses series and supracrustal *** former is located on the north side of the river and chiefly composed of TTG gneisses and amphibolites;the latter on the south side of the river is mainly supracrustal *** with the previous studies,the results obtained by this study show that the Taihua complex was formed in a large time span from Neoarchean to *** TTG gneisses and amphibolites are dated at Neoarchean (2794–2752 Ma).The 2.9 Ga and 3.1 Ga zircons in amphibolites could be *** the North China Craton,the 2.8–2.7 Ga old rocks crop out in several areas *** Shandong Province,Jiaodong Peninsula and Lushan area of Henan *** addition,2.8–2.7 Ga detrital zircons or xenocryst zircons have been recognized in Huai’an,Fuping,Wutai areas of North China Craton and also reported in the Early Paleozoic diamondiferous kimberlites in Mengyin and *** these age results indicate that the 2.8–2.7 Ga rocks may have been developed much broader region than today’s *** Hf and whole rock Nd isotopes show that the 2.8–2.7 Ga tectono-thermal event represents an important period of crustal growth with minor ancient crust reworked in the North China *** the formation of supracrustal rocks is limited to 2.2–2.0 Ga in the Palaeoproterozoic time,not the Archaean,as previously *** with the chronological data of aluminium-rich metamorphic rocks (Khondalite series) on the southern margin of the North China Craton and adjacent areas,it is suggested that the above areas have widely developed Paleoproterozoic passive continental margin environment.

关键词：锆石年代学中国地区同位素组成克拉通南缘 Hf 洛杉矶 MS法

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Synthesis and physiochemical property evaluation of carbamate derivatives of scutellarin methyl ester

引用

Chinese Chemical Letters 2013年第4期24卷 338-340页

作者： Feng-Jie Jiang Xiao-Zhong Fu Shan-Wu wang yong Huang Wen Zhou Ai-Min wang yong-lin wang School of Pharmacy Guiyang Medical College

A series of carbamate prodrugs of scutellarin methyl ester （4a-4e） were prepared in the presence of bis（trichloromethyl） carbonate （BTC） with scutellarin methyl esters and L-amino acid tert-butyl ester hydrochloride as starting materials. In vitro stability and aqueous solubility of target compounds were evaluated. The results indicated that compounds 4d and 4e have higher solubility and in vitro stability than scutellarin respectively.

关键词： ScutellarinBis(trichloromethyl) carbonatePhysiochemical property

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Theoretical Study on the Structural and Electronic Properties of the Reduced SnO_2 (110) Surface

引用

Chinese Journal of Structural Chemistry 2007年第5期26卷 606-612页

作者： ZHANG yong-Fan lin Wei wang Qi-Wei LI Yi LI Jun-Qian Department of Chemistry Fuzhou University Fuzhou Fujian 350002 China State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter The Chinese Academy of Sciences Fuzhou Fujian 350002 China

The reduced SnO2（110） surface has been investigated by using first-principles method with a slab model. By examining the vacancy formation energy of three kinds of reduced SnO2（110） surfaces, the most energetically favorable defect surface is confirmed to be the surface with the coexistence of bridging and in-plane oxygen vacancies, which is different with the traditional model by only removing bridging oxygen. The results of band structure calculations indicate that the electronic structure of this defect surface is similar to the SnO surface.

关键词： SnO2(110) surface band structure defect state

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

New diterpenoids from Isodon excisoides

引用

Chinese Chemical Letters 2010年第5期21卷 610-612页

作者： yong Xue wang,lin lin Zhu,Zhi An He,Ji Xia Zhang Pharmacy College,Xinxiang Medical University,Xinxiang 453003,China [a] Pharmacy College Xinxiang Medical University Xinxiang 453003 China

Two new ent-kaurane diterpenoids,taihangexcisoidesin C(1) and its acetonide,taihangexcisoidesin D(2) were isolated from the leaves of Isodon *** structures were determined by 1D and 2D spectroscopic analysis.

关键词： Isodon excisoides Ent-kaurane Diterpenoid Taihangexcisoidesin C and D

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Simultaneous determination of human plasma protein binding of bioactive favonoids in Polygonum orientale by equilibrium dialysis combined with UPLC–MS/MS

引用

Journal of Pharmaceutical Analysis 2013年第5期3卷 376-381页

作者： yong Huang Hui Chen Feng He Zhi-Rong Zhang lin Zheng Yue Liu Yan-Yu Lan Shang-Gao Liao yong-Jun Li yong-lin wang Provincial Key Laboratory of Pharmaceutics in Guizhou Province School of Pharmacy Guiyang Medical University

A simple and selective ultra performance liquid chromatography--electrospray ionization tandem mass spectrometry （UPLC-ESI-MS/MS） assay was developed for the determination of the human plasma protein binding of four bioactive ftavonoids （such as orientin and vitexin） in Polygonum orientale. Protein precipitation was used for sample preparation. Equilibrium dialysis technique was applied to determine the plasma protein binding under physiological conditions. The separation was achieved through a Waters C i s column with a mobile phase composed of 0.1% formic acid in acetonitrile and 0.1% aqueous formic acid using step gradient elution at a flow rate of 0.35 mL/min. A Waters ACQUITYTM TQD system was operated under the multiple reaction monitoring （MRM） mode of positive electrospray ionization. All of the recovery, precision, accuracy and stability of the method met the requirements. Good correlations （r 〉 0.99） of the four compounds were found, which suggested that these compounds can be simultaneously determined with acceptable accuracy. Results showed that the plasma protein bindings of the four bioactive flavonoids were in the range of 74-89% over the six concentrations studied. The binding parameters containing protein binding affinity, protein binding dissociation constant, and protein binding site were studied. The maximum ability to bind with protein was also determined in the assay in order to understand the drug-protein binding of each compound better.

关键词： Polygonum orientale Plasma protein binding Bioactive compounds Equilibrium dialysis UPLC–ESI-MS/MS

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Synthesis and anti-HBV evaluation of mono L-amino acid ester, mono non-steroid anti-inflammation drug carboxylic ester derivatives of acyclonucleoside phosphonates

引用

Chinese Chemical Letters 2014年第1期25卷 115-118页

作者： Xiao-Zhong Fu Feng-Jie Jiang Yu Ou Sheng Fu Yu-Feng Cha Shun Zhang Zong-Yuan Liu Wen Zhou Ai-Min wang yong-lin wang School of Pharmacy Guiyang Medical CollegeEngineering Research Center for the Development and Application of Ethnic Medicines and TCMMinistry of Education Provincial Key Laboratory of Pharmaceutics in Guizhou Province Guiyang Women and Children’s Hospital and Health Institute

A series of mono L-amino acid ester, mono non-steroid anti-inflammation drug （NSAID）, carboxylic ester derivatives of acyclonucleoside phosphonates were prepared by using a ＂one pot synthesis＂ method and their in vitro anti-HBV activity were evaluated in HepG 2.2.15 cells. Compound 9a exhibited more potent anti-HBV activity and lower cytotoxicity than those of adefovir dipivoxil with IC50 and selective index （SI） values of 0.48μmol/L and 763.72, respectively.

关键词： Acyclonucleoside phosphonate Non-steroid anti-inflammation drug Anti-HBV activity

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

The Multi-Agent Modeling and Calculated Analysis of Shop Logistics Scheduling in the Manufacturing Enterprises

引用

武汉理工大学学报 2006年第S1期28卷 376-380页

作者： CHEN yong,lin Feilong,wang Xiao,TANG Kefeng (College of Mechanical & Electrical Engineering,Zhejiang University of Technology,Hangzhou 310032,China) College of Mechanical & Electrical Engineering Zhejiang University of TechnologyHangzhou 310032China

In this paper,the multi-agent model about shop logistics is set up. This model has 8 agents: raw materials stock agent,process agent,testing agent,transition agent,production information agent,scheduling agent,process agent and stock agent. The scheduling agent has three subagents: manager agent (MA),resource agent (RA) and part agent (PA). MA,PA and RA are communicating equally that guarantees agility of the whole MAS system. The part tasks pass between MA,RA and PA as an integer,which can guarantee the consistency of the data. We use a detailed example about shop logistics scheduling in a semiconductor company to explain the principle. In this example,we use two scheduling strategies: FCFS and SPT. The result data indicates that the average flow time and lingering ratio are changed using different strategy. It is proves that the multi-agent scheduling is useful.

关键词： modeling multi-agent scheduling shop logistics

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

IL-1RⅠ/MyD88-TIR mimic AS-1 inhibits the activation of MyD88-dependent signaling pathway induced by IL-1β in vitro

引用

Journal of Nanjing Medical University 2007年第6期21卷 354-358页

作者： Yulong Hu Ting Li yong mei wang lin Guo Xiaohong Shan Jing Li Qi Chen Yuehua Li Department of Pathophysiology Nanjing Medical University Nanjing 210029 Jiangsu Province China

Objective： To test whether IL-1 RI/My088-TIR mimic AS-1 can work as a new compound that targeted at blocking MyD88- dependent signaling pathway, we investigated the physical structure and biological function of AS-1. Methods：The crystallographic structure of AS-1 was examined by 1^H nuclear magnetic resonance. The toxicity of AS-1 was measured with Methyl thiazolyl tetrazolium （MTT） assay. The effect of AS-1 on phosphorylation state of p38 MAPK and IRAK-1 was observed with Western blot. Results：The crystallographic details of AS-1 demonstrated that it was a tri-peptide sequence[（F/Y）-（V/L/I）-（P/G）] of the IL-1R I -TIR domain BBloop. No toxicity of AS-1 was shown to HEK 293A cells. The phosphorylation of p38 MAPK, induced by IL-1β significantly increased from those in the control group. AS-1 significantly reduced the phosphorylation of p38 MAPK induced by IL-1β. IL-1β increased the phosphorylation of IRAK-1 significantly, which was prevented by AS-1. Conclusion：AS-1 is a competitive mimic between IL-1R I-TIR and MyD88-TIR domain, which most likely interferes with MyD88-dependent signaling pathway.

关键词： hydrocinnamoyl-L-valyl pyrrolidine(AS-1) MyD88 IRAK-1 mitogen-activated protein kinases signaling pathway

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Boosting bidirectional sulfur conversion enabled by introducing boron-doped atoms and phosphorus vacancies in Ni2P for lithium-sulfur batteries

引用

Journal of Energy Chemistry 2025年第1期100卷 760-769页

作者： lin Peng Yu Bai Hang Li Meixiu Qu Zhenhua wang Kening Sun Advanced Research Institute of Multidisciplinary Science Beijing Institute of Technology Beijing Key Laboratory of Chemical Power Source and Green Catalysis School of Chemistry and Chemical Engineering Beijing Institute of Technology

Lithium-sulfur （Li-S） batteries have gained great attention due to the high theoretical energy density and low cost,yet their further commercialization has been obstructed by the notorious shuttle effect and sluggish redox ***,we supply a strategy to optimize the electron structure of Ni2P by concurrently introducing B-doped atoms and P vacancies in Ni2P （Vp-B-Ni2P）,thereby enhancing the bidirectional sulfur *** study indicates that the simultaneous introduction of B-doped atoms and P vacancies in Ni2P causes the redistribution of electron around Ni atoms,bringing about the upward shift of d-band center of Ni atoms and effective d-p orbital hybridization between Ni atoms and sulfur species,thus strengthening the chemical anchoring for lithium polysulfides （LiPSs） as well as expediting the bidirectional conversion kinetics of sulfur ***,theoretical calculations reveal that the incorporation of B-doped atoms and P vacancies in Ni2P selectively promotes Li2S dissolution and nucleation ***,the Li-S batteries with Vp-B-Ni2P-separators present outstanding rate ability of 777 m A h g-1at 5 C and high areal capacity of 8.03 mA h cm-2under E/S of 5μL mg-1and sulfur loading of 7.20 mg *** work elucidates that introducing heteroatom and vacancy in metal phosphide collaboratively regulates the electron structure to accelerate bidirectional sulfur conversion.

关键词： Lithium sulfur batteries

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Dative B–N bonds weaven toward two-dimensional purely organic materials for single crystals

引用

Science China Chemistry 2025年第01期 12-14页

作者： Wei-Lei Zhou Siwei wang yong Chen College of Chemistry and Materials Science Inner Mongolia Key Laboratory of Chemistry for Nature Products and Synthesis for Functional Molecules Innovation Team of Optical Functional Molecular Devices Inner Mongolia Minzu University College of Chemistry Nankai University

Molecular topology is one of the important topics to study and understand the relationship between molecular structure and properties [1]. Particularly, two-dimensional (2D) materials with extremely high surface area and ultra-thin morphology have attracted considerable attention due to their unexpected properties in materials and chemistry [2,3].

关键词：

来源：

同方期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：