检索结果-南通市图书馆

软件 1990年第2期11卷 128-142页

作者： rose.,jb 张朴

抗阻训练通过激活雄性和雌性小鼠的雄激素受体抑制肌肉疼痛

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

中国疼痛医学杂志 2024年第7期30卷 481-484页

作者：刘婧媛(译) 郑拥军(校) 复旦大学附属华东医院

基于抗阻训练的运动通常用于治疗慢性疼痛。有氧运动的镇痛机制经常被报道,而关于抗阻训练机制知之甚少。该研究开发了一种小鼠抗阻训练模型,并假设抗阻训练可以通过激活雄激素受体来防止肌肉疼痛的发展。活动诱导的肌肉痛觉过敏通过2... 详细信息

基于抗阻训练的运动通常用于治疗慢性疼痛。有氧运动的镇痛机制经常被报道,而关于抗阻训练机制知之甚少。该研究开发了一种小鼠抗阻训练模型,并假设抗阻训练可以通过激活雄激素受体来防止肌肉疼痛的发展。活动诱导的肌肉痛觉过敏通过2次注射pH 5.0的刺激物引起肌肉收缩疲劳产生。通过让小鼠负重爬梯,每周3次,来进行抗阻训练。在诱导疼痛模型之前进行8周的抗阻训练,阻止两性小鼠肌肉痛觉过敏的进展。在诱导疼痛模型后开始的抗阻训练仅逆转了雄性小鼠的肌肉痛觉过敏,一次抗阻训练会急剧增加雄性小鼠的睾酮。在为期8周的训练计划中,雄激素受体拮抗剂氟他胺(200 mg)的给药阻断了在两性小鼠中运动对肌肉疼痛的保护作用。然而,对抗阻训练的小鼠单次给予氟他胺(1、3、10 mg/kg)对已有的运动诱导的肌肉疼痛保护没有影响。因此,抗阻训练会随着时间的推移迅速增加乳酸和睾酮以及力量。8周的抗阻训练通过激活肌肉疼痛动物模型中的雄激素受体来防止痛觉过敏的发展。

关键词：抗阻训练肌肉疼痛镇痛机制运动诱导雄激素受体刺激物痛觉过敏氟他胺

在线全文

学校读者我要写书评

暂无评论

序言:DNA数据存储技术与应用

集成技术 2024年第3期13卷 1-3页

作者：戴俊彪姜青山钱珑黄小罗中国农业科学院深圳农业基因组研究所中国科学院大学深圳市高性能数据挖掘重点实验室加拿大多伦多大学北京大学前沿交叉学科研究院中国科学院深圳先进技术研究院

计算机、互联网、人工智能等技术的发展推动人类文明的进步,同时也给人类社会带来海量的数据。传统的存储介质如磁带、硬盘等存在存储周期短、存储密度低等问题。寻找新兴的存储介质具有重要价值。基于DNA的数据存储介质存储密度高于传... 详细信息

计算机、互联网、人工智能等技术的发展推动人类文明的进步,同时也给人类社会带来海量的数据。传统的存储介质如磁带、硬盘等存在存储周期短、存储密度低等问题。寻找新兴的存储介质具有重要价值。基于DNA的数据存储介质存储密度高于传统介质6个数量级以上,存储周期可达千年,是应对未来数据存储挑战的重要战略技术之一,在长期冷数据、国家档案数据、高度加密数据存储领域具有重要意义。本期专题针对目前DNA信息存储的核心进展、存在的问题以及未来技术发展进行了系列讨论。其中,中国科学院深圳先进技术研究院为主科研团队[1]提出了“基于混沌系统和喷泉码的DNA加密编码方法”,在DNA喷泉码编码过程中利用混沌系统加密,一方面保留DNA喷泉码优势,同时保障了喷泉编码的安全.

关键词：存储密度存储周期数据存储技术人工智能存储领域存储介质中国科学院档案数据

THE DEFECT ITERATION OF THE FINITE ELEMENT FOR ELLIPTIC BOUNDARY VALUE PROBLEMS AND PETROV-GALERKIN APPROXIMATION

在线全文

学校读者我要写书评

暂无评论

Journal of Computational Mathematics 1998年第2期16卷 152-164页

作者： Gao, jb Yang, YD Shih, TM Huazhong Univ Sci & Technol Dept Math Wuhan 430074 Peoples R China Guizhou Normal Univ Dept Math Guiyang 550001 Peoples R China Hong Kong Polytech Univ Dept Math Appl Hong Kong Peoples R China

In this paper we introduce a Petrov-Galerkin approximation model to the solution of linear and semi-linear elliptic boundary value problems in which piecewise quadratic polynomial space and piecewise linear polynomial space are used as the shape function space and the test function space, respectively. We prove that the approximation order of the standard quadratic finite element can be attained in this Petrov-Galerkin model. Based on the so-called 'contractivity' of the interpolation operator, we further prove that the defect iterative sequence of the linear finite element solution converge to the proposed Petrov-Galerkin approximate solution.

关键词： Petrov-Galerkin approximation defect iteration correction interpolation operator

Kinetic Study on Horseradish Peroxidase Interacting with Cyclodextrin

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2000年第8期11卷 721-724页

作者： Chen, jb Xia, CG Ben Li, S Chinese Acad Sci Lanzhou Inst Chem Phys State Key Lab Oxo Synth & Select Oxidat Lanzhou 730000 Peoples R China

The catalyst reactivity of Horseradish peroxidase was enhanced in the presence of beta-cyclodextrin. During this course, beta- cyclodextrin played a role of stabilizing the intermediates of HRP. The results have been ... 详细信息

关键词： horseradish peroxidase beta- cyclodextrin compound kinetics

Notes on the genus Entoloma *** the Northwest of the Iberian Peninsula(Ⅺ):a new species in subgenus Entoloma

在线全文

学校读者我要写书评

暂无评论

Studies in Fungi 2021年第1期6卷 64-70页

作者： Blanco-Dios jb Centro de Formación e Experimentación Agroforestal de Lourizán.Consellería do Medio Rural.Xunta de Galicia.P.O.Box 127.36003 Pontevedra Spain

Entoloma cedeirense,a new species in subgenus Entoloma,is described from in Galicia(NW of Spain).A detailed macro and micromorphological descriptions,drawings and a discussion with closely related taxa of subgenus Ent... 详细信息

关键词： Agaricales Basidiomycota Entolomataceae Spain Taxonomy

A novel solid state Michael addition reaction of N-heterocyclic compounds containing active C-H bond

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Journal of Chemistry 1996年第5期14卷 421-427页

作者： Li, XL Wang, YM Tian, B Meng, jb NANKAI UNIV DEPT CHEMTIANJIN 300071PEOPLES R CHINA

In this paper, a novel solid state Michael-type addition reaction of N-heterocyclic compounds containing the active-CH group was investigated. 3-Methyl-1-phenyl-5-pyrazolone (MPP) and indole (In) reacted with 4-arylmethylene-3-methyl-1-phenyl-5-pyrazolone (1) in the solid state at room temperature to give the corresponding adducts, aryl-4,4'-bis(5-hydroxy-3-methyl-1-phenyl-pyrazolyl) methane (2a-n) and 1-aryl-1-(5'-hydroxy-3'-methyl-1'-phenyl-4'-pyrazolyl)-1-(3 ''-indolyl) methane (3a-n), respectively. This is a feasible method for preparing the compound which contains two heterocyclic groups on the same carbon.

关键词： indole pyrazolone Michael addition solid state reaction

Notes on the genus Arrhenia(I):Arrhenia pontevedrana,*** ***(Agaricales,Basidiomycota),from the northwest of the Iberian Peninsula

在线全文

学校读者我要写书评

暂无评论

Studies in Fungi 2019年第1期4卷 185-191页

作者： Blanco-Dios jb Centro de Formación e Experimentación Agroforestal de Lourizán.Consellería do Medio Rural.Xunta de Galicia.P.O.Box 127.36003 Pontevedra Spain

Arrhenia pontevedrana is described as a new species to science from Galicia(NW of Iberian Peninsula)based on morphological characteristics.A detailed description of basidiomata and microstructures of this species and a comparison with its morphologically closely related taxa are *** subglobisemen is recorded for the first time from the Iberian *** new combination Arrhenia kuhnerii is also proposed.

关键词： Biodiversity Spain Taxonomy Tricholomataceae

Spatial distribution of copper content in sediments of the Yangtze River system

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Science Bulletin 1997年第15期42卷 1294-1297页

作者： Zhang, CS Zhang, S He, jb State Key Laboratory of Resources and Environment Information System China Department of Chemical Geography Institute of Geography Chinese Academy of Sciences Beijing China

THE spatial distribution pattern of an element content is controlled by various geochemical pro-cesses. Studies on the spatial pattern are beneficial to further analysis on the factors. As a re-sult, our knowledge about the geochemical processes is enriched. At the same time, describingthe spatial patterns quantitatively with some indices is one way from qualitative to quantitativeanalysis.

关键词： geostatistics variogram Kriging copper.

Synthesis and photochromism of dimers of 4,5- diaryl-2-(2,5-dimethylthiophen-3-yl)imidazolyl

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Chemistry 1997年第6期15卷 553-555页

作者： Bai, JQ Han, XC Wang, YM Meng, jb Nankai Univ Dept Chem Tianjin 300071 Peoples R China

4,5-Diphenyl, 4,5-di(4-methylphenyl), 4,5-di(4-methoxyphenyl)-2-(2,5-dimethylthiophen-3-yl)imidazoles were synthesized. Oxidation of the obtained imidazoles with potassium ferricyanide in water-alcohol solution of alkali gave the corresponding dimers. The structures were characterized by IR, H-1 NMR, mass spectroscopy and elemental analysis. The dimers showed photochromism in solution on irradiation.

关键词： synthesis imidazoles dimers photochromism