检索结果-南通市图书馆

Self-assembly of N-3-γ-pyridyl Aza[60]fulleroid on Au(111)

Chinese Science Bulletin 2005年第5期50卷 406-411页

作者： ZHOUYunshen WANGKedong ZHAOFengzhou WANGBing HOUJianguo WANGShu liyuliang HefeiNationalLaboratoryforPhysicalSciencesatMicroscale StructureResearchLabUniversityofScienceandTechnologyofChinaHefei230026China KeyLaboratoryofOrganicSolids InstituteofChemistry.ChineseAcademyofSciencesBeijing100080China

Self-assembled monolayers of novel C60 derivative, N-3-γ-pyridyl Aza[60]fulleroid (C60Py), on Au(111) were studied by a scanning tunneling microscope under ultrahigh vacuum (UHV). C60Py molecules were assembled on Au (111) via pyridyl nitrogen-Au interaction. The sole assembly of C60Py molecules on Au (111) only exhibited randoml aggregation of C60Py even the films were annealed at 50 and 105℃. By co-assembling with benzyl mercaptan (BM), the C60Py- BM films showed highly dense aggregation, but C60Py assemblies still had disordered structure. After the co-assembled C60Py-BM films were annealed at 50℃, BM molecules were partially desorbed, but the assembly of C60Py remained without obvious change. After the co-assembled C60Py-BM films were further annealed at 105℃, the C60Py monolayers with ordered structure were obtained, while the BM molecules were nearly thoroughly desorbed from the surface. Here, the BM molecules play a key role as a surfactant in the formation of the ordered C60Py monolayer.

关键词：自组合特征 N-3-γ-氮杂吡啶金碳60 化学特征表面活性剂

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

Bloodletting at Jing-well points decreases interstitial fluid flow in the thalamus of rats

引用

Journal of Traditional Chinese Medicine 2016年第1期36卷 107-112页

作者： FuYu liyuliang GuoJia Liu Bin Liu Huipo Zhang Weibo Sun Wanli GaoYajuan Ren Qiushi Han Haojun Department of Neurology Peking University Third Hospital Beijing 100191 China Beijing Key Lab of Magnetic Resonance Imaging Device and Technique Beijing 100191 China Department of Biomedical Engineering College of engineering of Peking University Beijing 100191 China Department of Interventional Medicine The Second Hospital of Shandong University Jinan 250033China Institute of Applied Physics and Computational Mathematics Beijing 100094 China Institute of Acupuncture and Moxibustion China Academy of Chinese Medical Sciences Beijing 100700China Beijing Key Lab of Magnetic Resonance Imaging Device and Technique Department of Biomedical Engineering College of engineering of Peking University Department of Radiology Peking University Third Hospital Beijing 100191 China Chang Zhi Medical College Chang Zhi 046000 China

OBJECTIVE：To investigate the changes in the neuronal microenvironment of the middle cerebral artery （MCA） territory induced by Jing-well points bloodletting acupuncture （WPBA） and to explore the neuroprotective mechanism of WPBA in stroke. METHODS： Adult male Sprague Dawley （n = 32） rats were randomly divided into four groups of eight animals each： WPBA-thalamus group （WT）, WPBA-caudate nucleus group （WC）, sham-control thalamus group （ST） and sham-control caudate nucleus group （SC）. Animals in the WT and WC groups received 2 I-μL of the extracellular tracer gadolinium-diethylene triamine pentaacetic acid （Gd-DTPA） injected into the thalamus or caudate nucleus, respectively, and 12 Jing-well points in the distal ends of the rats＇ digits were used for WPBA. Although 2 μL of Gd-DTPA was injected into the thalamus or caudate nucleus, respectively, for animals in the two sham groups （ST and SC）, no acupuncture or bloodletting was performed. Brain extracellular space and interstitial fluid flow parameters were measured using Gd-DTPA-enhanced magnetic reso- nance imaging. RESULTS： The brain interstitial fluid flow speed was decreased in the thalamus after WPBA, with a significantly lower Gd-DTPA clearance rate and longer half-life of Gd-DTPA in the thalamus of treated rats than those in sham-control rats [WPBA-treated rats＇clearance rate, （7.47 ± 3.15） x 10^-5/s （P = 0.009）; half-life, （1.52 ± 0.13） h, P = 0.000]. By contrast, no significant changes in brain extracellular space and interstitial fluid flow parameters were detected in the caudate nucleus after WPBA （P = 0.649）. In addi- tion, no differences in the morphology of the brain extracellular space or the final distribution of the traced brain interstitial fluid were demonstrated be- tween theWT and WC groups （P = 0.631, P = 0.970, respectively）. CONCLUSION： The WPBA decreased the speed of the local thalamic ISF flow in rats, which is assumed to be a beneficial protection by down-modulated the metabolic rate of the

关键词： Bloodletting Extracellular space Gado-linium ethoxybenzyl DTPA Interstitial fluid Magnetic resonance imaging

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

新质源水稻雄性不育系马协A的遗传分析

引用

武汉大学学报（自然科学版） 1998年第6期44卷 781-783页

作者：黄青阳李如亮张端阳朱英国武汉大学生命科学学院华中师范大学生命科学学院

用马协Ａ和珍汕９７Ａ与１３个水稻品系杂交，对两者的遗传行为进行了比较．结果表明，马协Ａ和珍汕９７Ａ的恢保关系基本相同；它们与丛广４１Ｂ、密阳２３的杂交后代表现一对基因的分离规律，与明恢６３的杂交后代表现２对基因的遗传... 详细信息

用马协Ａ和珍汕９７Ａ与１３个水稻品系杂交，对两者的遗传行为进行了比较．结果表明，马协Ａ和珍汕９７Ａ的恢保关系基本相同；它们与丛广４１Ｂ、密阳２３的杂交后代表现一对基因的分离规律，与明恢６３的杂交后代表现２对基因的遗传规律；等位性测验表明两者的核不育基因是等位的．马协Ａ和珍汕９７Ａ在遗传上属同一类型．

关键词：细胞质雄性不育遗传分析水稻马协A 杂交水稻

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

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

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

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：