检索结果-南通市图书馆

Fourier transform-infrared studies on the effects of salt and drought stress on the chemical composition and pro-tein conformation changes in Arabidopsis leaves

引用

Research in Cold and Arid Regions 2009年第4期1卷 341-347页

作者： Xin Zhao 1,FenLin Sheng 2,XinRong Li 1,GuoXiong Chen 1 1.Laboratory of Plant Stress Ecophysiology and Biotechnology,Cold and Arid Regions Environmental and Engineering Re-search Institute,Chinese Academy of Sciences,lanzhou,gansu 730000,China.2.Instrumental Analysis & Research Center,lanzhou University,lanzhou,gansu 730000,China Chinese Acad Sci Cold & Arid Reg Environm & Engn Res Inst Lab Plant Stress Ecophysiol & Biotechnol 320West Donggang Rd Lanzhou 730000 Gansu Peoples R China lanzhou Univ Instrumental Anal Res Ctr Lanzhou 730000 Gansu Peoples R China

We examined the changes of chemical composition and protein conformation in Arabidopsis leaves by Fourier transform-infrared (FT-IR) spectrometry Arabidopsis under 50 mmol/L NaCl salt and -0.5 mPa polyethylene glycols 8000 (PEG 8000) drought stress during the early stages of *** primarily analyzed the absorption band areas in the 1,745 cm-1 (ester),1,600-1,700 cm-1 (amide I),and 1,100 cm-1 (carbohydrate) changes under salt stress and drought stress within 24 *** results showed that ester content declined at the beginning and then increased steadily during 24 hours of drought *** under salt stress,it de-clined steadily,and it was about 40 percent of the control after 24 *** protein synthesis increased by 25 percent after one hour of salt stress and then reached about 85 percent of the control after 24 *** drought stress,the protein synthesis de-creased and reached aminimal level at the 4-hr time point;it then recovered to the control level at the 24-hr *** patterns of the accumulation of carbohydrates in the 1,100 cm-1 band areas resembled that of amide I band changes under drought stress and salt *** the ratio A1,627cm-1/A1,658cm-1 under drought stress revealed that the leaves’ entire protein structure maintained a higher-level ordered form than did those under salt *** our results indicate the existence of different strategies of the Arabidopsis adaptation to salt stress and drought stress.

关键词： Arabidopsis band fitting FT-IR salt stress drought stress

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

Effects of Buyang Huanwu decoction and Astragalus mongholicus on platelet activating factor receptor activity in rabbits in vitro

引用

Neural Regeneration Research 2006年第7期1卷 634-637页

作者： Hui Yao1, Jiping Zhang2, Zhixi Chen3, Yongjie Wu4, Zhiqiang Li3 1Department of Pharmacy, 2Department of Science Education, Foshan Second People’s Hospital, Foshan 528000, Guangdong Province, China 3Laboratory of Nuclear Medicine, Guangzhou University of Traditional Chinese Medicine, Guangzhou 510405, Guangdong Province, China 4Department of Pharmacology, College of Pharmaceutical Science, lanzhou University, lanzhou 730000, gansu Province, China Department of Pharmacy Foshan Second People's Hospital Foshan 528000 Guangdong Province China Department of Science Education Foshan Second People's Hospital Foshan 528000 Guangdong Province China Labroatory of Nuclear Medicine Guangzhou University of Traditional Chinese Medicien Guangzhou 510405 Guangdong Province China Department of Pharmacology College of Pharmaceutical Science Lanzhou University Lanzhou 730000 Gansu Province China

BACKGROUND: The pharmacological action of traditional Chinese medicine compound is the comprehensive effect of the various ingredients, and the interactions of various ingredients are closely correlated with the final effect. In order to reveal the compatibility mechanism of BHD's prescription in treating and preventing ischemic cerebrovascular disease, we needed explore the effect and relation of ingredients in the prescription. OBJECTIVE: To observe the effect of Buyang Huanwu decoction (BHD) and Astragalus mongholicus on the activity of platelet activating factor receptor (PAFR) in the platelet of rabbits in vitro, and investigate the mechanism of Astragalus mongholicus. DESIGN: A decomposed recipes study. SETTING: Guangzhou University of Traditional Chinese Medicine. MATERIALS: Five New Zealand rabbits, weighing 2-3 kg, both sexes, were used. BHD was composed of Sheng Huang Qi 120 g, Dang Gui Wei 6 g, Chi Shao 4.5 g, Chuan Xiong 3 g, Di Long 3 g, Tao Ren 3 g, Hong Hua 3 g. The prescription for activating blood circulation consisted of Dang Gui Wei 6 g, Chi Shao 4.5 g, Chuan Xiong 3 g, Di Long 3 g, Tao Ren 3 g and Hong Hua 3 g. The prescription for invigorating qi consisted of 120 g Sheng Huang Qi. The prepared herbal pieces were purchased from the traditional Chinese medicine Dispensary of Foshan Second People's Hospital, and appraised by Professor Xu from Science of Chinese Materia Medica College, Guangzhou University of Traditional Chinese Medicine. 3H-PAF was supplied by Amersham Co., Ltd. (specific activity: 6. 475 TBq/mmol; batch number: 200402); PAF standard by Biomol Co., Ltd. (batch number: P1318V). METHODS: The experiments were carried out in the Laboratory of Nuclear Medicine, Guangzhou University of Traditional Chinese Medicine from September to December 2004. ① Injections of BHD, prescriptions for activating blood circulation and invigorating qi were prepared by the decoction and alcohol sedimentation technique. Rabbit common carotid artery blood (40

关键词： PAFR Effects of Buyang Huanwu decoction and Astragalus mongholicus on platelet activating factor receptor activity in rabbits in vitro

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

中国经堂教育溯源

引用

回族研究 2012年第2期 102-108页

作者：丁士仁兰州大学伊斯兰文化研究所甘肃兰州730000

经堂教育是伊斯兰文化教育的主要形式,是传承宗教信仰和延续文化命脉的重要途径。国内以往的相关研究,由于受到资料、语言等方面的局限,加之缺乏横向的比较,过多地强调中国经堂教育的独创性,而忽视了其与伊斯兰世界教育体系的整体联系... 详细信息

经堂教育是伊斯兰文化教育的主要形式,是传承宗教信仰和延续文化命脉的重要途径。国内以往的相关研究,由于受到资料、语言等方面的局限,加之缺乏横向的比较,过多地强调中国经堂教育的独创性,而忽视了其与伊斯兰世界教育体系的整体联系。如果将中国经堂教育放到一个更大的视野中去考察,进行横向比较,不难发现它只是一个流,其源头近在印度,远在中亚。

关键词：经堂教育尼扎姆大纲印度中亚

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

Study on the Spreading of Environmental Impact of Human Being' s Activities and Its Crucial Factors in Upper Minjiang River

引用

Wuhan University Journal of Natural Sciences 2003年第S2期 949-956页

作者： Fan Hong, Zhao Hong-da College of Resources and Environment, lanzhou University, lanzhou 730000, gansu, China Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, Sichuan, China

This paper focuses on the historical transition of human being's activities and the eco-environment in the upper reaches of Minjiang River. The history is divided into 4 periods, each with its own feature. During the period of nomad immigration, the top-line of the subalpine forest was forced downward by the expanding subalpine meadow. During the period of farming nationality immigration, the bottom-line of middle mountain forest had moved upward forced by the needs for land or timber of the increasing population in the valley basia During the period of the early exploiting, the focus resource was the timber. The total output was limited, comparing with the later period, because of the bad accessibility. But it was large enough to impact the forest ecosystem of the deforesting area. The recent 50 years is the crucial period of economic development and eco-environment degradation. This paper points out that the impact of human being's activities for environment lies on 3 factors: 1) physical features con

关键词： historical period human being’s activities environmental impact crucial factors

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

Antioxidant synergism of green tea polyphenols with-tocopherol and L-ascorbic acid in SDS micelles

Antioxidant synergism of green tea polyphenols with-tocopher...

引用

The International Meeting of the Society for Free Radical Research(SFRR)-Asia & the Third International Symposium on Natural Antioxidants-Molecular Mechanisms and Health Effects(ISNA)

作者： Fang Dai, Bo Zhou, Li Yang and Zhong-Li Liu National Laboratory of Applied Organic Chemistry, lanzhou University, lanzhou, gansu 730000, China

Drinking tea, especially green tea, is associated with a lower incidence of human cancer. The mechanisms of cancer inhibition by green tea polyphenols remain an active area of research. (-)-Epigallocatechin gallate (EGCG), the most abundant constituent of green tea polyphenols, was reported to be active in preventing cancer by inhibiting angiogenesis [1] and urokinase activity [2]. A receptor, which mediates the anticancer activity of EGCG, was also identified

关键词：

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

关于甘南藏族婚姻习惯法的实证分析

引用

法制与社会发展 2009年第6期15卷 45-53页

作者：刘艺工刘利卫兰州大学法学院甘肃兰州730000

婚姻习惯法是甘南藏族习惯法的重要组成部分。甘南藏区的法制变迁使这里的婚姻习惯法的内容和特点具有明显的地区特色。甘南藏族婚姻习惯法与我国《婚姻法》有冲突,也有协调一致之处。如何更好地实现国家婚姻法与民族习惯法的良性互动... 详细信息

婚姻习惯法是甘南藏族习惯法的重要组成部分。甘南藏区的法制变迁使这里的婚姻习惯法的内容和特点具有明显的地区特色。甘南藏族婚姻习惯法与我国《婚姻法》有冲突,也有协调一致之处。如何更好地实现国家婚姻法与民族习惯法的良性互动需要各方面的长期努力。

关键词：藏族婚姻习惯法国家法冲突与协调

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

Evidence of spin excitation gap in K0.84Fe1.99Se2 superconductor as revealed by Mssbauer spectroscopy

Evidence of spin excitation gap in K0.84Fe1.99Se2 supercondu...

引用

第十一届全国穆斯堡尔谱学会议

作者： Hua Pang,Zhiwei Li,Xiaoming Ma,Fashen Li (Institute of Applied Magnetics,lanzhou University,lanzhou 730000, gansu,P.R.China)

Mssbauer spectroscopy was used to probe the site specific information of the KFeSe *** results provide clear evidence of microscopic coexistence of superconductivity and antiferromagnetism.A spin excitation gap,△E≈5 meV,is observed by analyzing the temperature dependence of the hyperfine magnetic field at the iron site within the spin wave *** exchange constants of the Fe sub-lattice were calculated first *** with an effective spin

关键词：

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

超声造影在原发性肝癌导管栓塞治疗效果评价中的应用研究

引用

中国超声医学杂志 2012年第4期28卷 348-351页

作者：杨洁张学兰甘肃省人民医院超声科

目的通过超声造影对肝动脉化疗栓塞(TACE)术治疗的原发性肝癌的观察,了解超声造影对TACE疗效的评价作用,并进一步协同TACE的治疗。方法 54例原发性肝癌患者治疗前及治疗后1周进行超声造影检查,观察肿瘤组织血供情况,了解肿瘤组织内部有... 详细信息

目的通过超声造影对肝动脉化疗栓塞(TACE)术治疗的原发性肝癌的观察,了解超声造影对TACE疗效的评价作用,并进一步协同TACE的治疗。方法 54例原发性肝癌患者治疗前及治疗后1周进行超声造影检查,观察肿瘤组织血供情况,了解肿瘤组织内部有无残留血供和遗漏病灶,并对未完全灭活的病灶针对性地进行TACE补充治疗。结果超声造影提示:单次TACE治疗病例中,肿瘤灭活病例和肿瘤遗漏病例均明显高于多次TACE治疗的病例(P0.05);TACE治疗后1个月的疗效比较统计显示,单发病灶与多发病灶的两组间完全缓解率比较,单发病灶的完全缓解率要明显高于多发病灶(P<0.01);3年生存率随访,6个月,1、2、3年生存率分别为87.5%、69.8%、45.6%、22.3%。结论 CEUS能够比较精确地反映TACE治疗后肿瘤血供阻断情况,客观地评价和反映了TACE治疗的疗效,同时为进一步寻求新的原发性肝癌治疗手段和进行必要的补充治疗提供依据。

关键词：超声造影经导管动脉化学栓塞术原发性肝癌

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

某铁路隧道偏压段二次衬砌裂缝的成因和整治方案

引用

施工技术 2011年第S2期40卷 99-101页

作者：毛金龙兰州铁道设计院有限公司甘肃兰州730000

隧道二次衬砌混凝土裂缝是铁路工程中普遍存在的问题。以某铁路隧道偏压段二衬混凝土裂缝为实例,分析了裂缝产生的成因,提出了综合整治隧道衬砌裂缝的具体措施,监测数据证明裂缝控制方案可行。

关键词：铁路隧道偏压衬砌裂缝处理

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

TPR AND CTPR STUDIES ON Ni/Al2O3 CATALYST FOR CATALYTIC PARTIAL OXIDATION OF METHANE TO SYNGAS

引用

Journal of Energy Chemistry 1996年第1期 45-50页

作者： LU Yong XUE Jin-Zhen DING Xue-Jia SHEN Shi-Kong (State Key Laboratory of Oxo Synthesis and Selective Oxidation lanzhou Institute of Chemical Physics, The Chinese Academy of Sciences lanzhou, gansu 730000 To whom correspondence should be addressed)

The surface features and the catalytic performance of a 9.0 %(mass fraction) Ni/Al2O3 catalyst prepared by impregnation method for the catalytic partial oxidation of methan to synthesis gas were investigated by Temperture Programmed Reduction (TPR), Constant Temperature Pulse Reaction (CTPR) and the catalytic performance evaluation. It was found that the active and selective catalyst surface during the reaction consisted of metallic nickel and nickel oxide species which could be reduced at 520～540℃. Whilst a possible mechanism of the CPO process was suggested.

关键词： Temperature Programmed Reduction(TPR) Constant Temperature Pulse Reaction (CTPR) methane Ni/Al2O3 catalyst

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

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：