不同运动量急性运动对红细胞免疫功能的影响   总被引：1，自引：0，他引：1  

宋亚军  郝梅 《安徽体育科技》1999,(1)

通过对比观察不同运动量急性运动后及恢复期红细胞免疫功能的变化发现,三种不同运动量急性运动后,RBC-C3bR活性与安静相比显著下降,其下降程度与运动量大小呈正依存关系;运动结束后即转入恢复过程,至运动后3小时,表现为运动量愈大,其恢复速度愈慢,反之亦然。运动后15h均恢复到安静时水平,小运动量运动对RBC-IC花环率影响不大,随着运动量加大,RBC-IC花环率显著增高,45分钟组运动后及恢复期RBC－C3bR花环率和RBC-IC花环率呈现显著负相关关系。  相似文献   

高校图书馆读者工作浅析     

郝丽艳  刘晓铭 《图书馆学研究》1999,(1):60-61

读者工作,是指图书馆采用各种形式直接满足读者需要的服务活动. 高校图书馆读者工作既存在一般公共馆的普遍性,又有其特殊性,高校图书馆是为教学和科研服务的学术性机构,是学校信息情报中心,是知识的源泉,是学校的第二课堂,是课堂教学的延伸和强化,也是课堂教育的充实丰富和拓宽.  相似文献   

排序位移法证明一类离散不等式     

洪勇  周良金 《襄樊学院学报》1999,20(5):1-3

文章给出一种证明一类离散不等式的新方法──排序位移法．  相似文献   

Kinetic Analysis of Second Fly of Men's Long Horse Handspring Tucked Salto with 720°     

Zhao Huanbin  Hao Yuanwei  WangHaitao 《中国体育科技》1999,(2)

本文通过对我国部分优秀男子体操运动员跳马“前手翻团身前空翻  相似文献   

在VB中开发多媒体应用系统     

张晓勇  解皓  胡锦成 《临沂师范学院学报》1999,(6)

论述了多媒体对象链接技术OLE及控制接口MCI技术,阐述了利用VisualBasic进行多媒体编程的思想,介绍了在Windows下调用API函数及相关的用户控件对象,就OLE及MCI技术进行多媒体编程的方法进行了研究,并给出了一个用VB编写的实例  相似文献   

技术创新中的领先用户研究   总被引：16，自引：0，他引：16  

雍灏  陈劲  郭斌 《科研管理》1999,20(3):57-61,68

现代企业为增强其竞争优势而日益重视产品和服务的创新。用户,尤其是领先用户,在创新过程中的作用越来越显著。本文介绍了领先用户的概念和领先用户研究的方法,以便我国企业在实践中准确理解市场需求,加速技术创新过程,最终取得创新的成功。  相似文献   

欲望与失落——评邱华栋小说集《哭泣游戏》     

陈朝忠  冯昊 《江西教育学院学报》1999,(5)

邱华栋的小说直指都市 ,描写了都市青年的生存状态 ,着重展示了欲望的膨胀 ,同时也记载了一位都市实际生活者在欲望的逼仄下向往和谐而不能、最终无可避免地走向失落的心态  相似文献   

轮钟花属的恢复及其花粉和种皮证据     

洪德元  潘开玉 《中国科学院研究生院学报》1998,36(2):106-110

光学显微镜和扫描电镜观察表明,金钱豹属(广义)花粉明显分为两个类型:Campanumoea inflata和C.javanica subsp.laponica的花粉5～8沟,外壁具相对密的短刺,刺高不过1μm,而C.lancifolia,C.celebica和C.parviflora的花粉3孔沟,外壁刺稀疏,高于2μm。种子表面纹饰也同样可分为  两类,前两个种一类,其种子表面网状,网眼规则而多角形,直径大于网脊宽度,网脊上的次级纹饰为念  珠状,而后三种为一类,其种子表面网眼不规则,直径与网脊宽度近相等,网脊上的次级纹饰绳索状。可  见花粉特征与种皮性状是高度相关的。后三个种所属的分类群就是被归并了的属Cyclocodon Griffith。  综合花粉、种皮及外部形态,这个属应予恢复。其近缘属应是Platycodon,而不是Campanumoea。  相似文献   

高职院校教育教学策略探讨——以武汉职业技术学院为例     

黄诚驹  范皓  黄晓幸 《武汉职业技术学院学报》2011,10(2):27-29

随着高职教育的发展和社会对高技能人才日益增长的需求,越来越多的优秀考生开始垂青于高职院校。不断提高的生源质量,给高职教育带来新的活力的同时,也给高职教育服务提出更高层次的要求。改进高职院校教育服务策略,提高高职院校的办学软实力,是学生成才就业的迫切要求,也是高职院校建设发展的必然要求。  相似文献   

Dynamic resistance exercise increases skeletal muscle-derived FSTL1 inducing cardiac angiogenesis via DIP2A–Smad2/3 in rats following myocardial infarction     

Yue Xi  Meili Hao  Qiaoqin Liang  Yongxia Li  Da-Wei Gong  Zhenjun Tian 《运动与健康科学(英文)》2021,10(5):594

PurposeThe aim of this study was to investigate the potential of dynamic resistance exercise to generate skeletal muscle-derived follistatin like-1 (FSTL1), which may induce cardioprotection in rats following myocardial infarction (MI) by inducing angiogenesis.MethodsMale, adult Sprague-Dawley rats were randomly divided into 5 groups (n = 12 in each group): sham group (S), sedentary MI group (MI), MI + resistance exercise group (MR), MI + adeno-associated virus (AAV)–FSTL1 injection group (MA), and MI + AAV–FSTL1 injection + resistance exercise group (MAR). The AAV–FSTL1 vector was prepared by molecular biology methods and injected into the anterior tibialis muscle. The MI model was established by ligation of the left anterior descending coronary artery. Rats in the MR and MAR groups underwent 4 weeks of dynamic resistance exercise training using a weighted climbing-up ladder. Heart function was evaluated by hemodynamic measures. Collagen volume fraction of myocardium was observed and analyzed by Masson''s staining. Human umbilical vein vessel endothelial cells culture and recombinant human FSTL1 protein or transforming growth factor-β receptor 1 (TGFβR1) inhibitor treatment were used to elucidate the molecular signaling mechanism of FSTL1. Angiogenesis, cell proliferation, and disco interacting protein 2 homolog A (DIP2A) location were observed by immunofluorescence staining. The expression of FSTL1, DIP2A, and the activation of signaling pathways were detected by Western blotting. Angiogenesis of endothelial cells was observed by tubule experiment. One-way analysis of variance and Student''s t test were used for statistical analysis.ResultsResistance exercise stimulated the secretion of skeletal muscle FSTL1, which promoted myocardial angiogenesis, inhibited pathological remodeling, and protected cardiac function in MI rats. Exercise facilitated skeletal muscle FSTL1 to play a role in protecting the heart. Exogenous FSTL1 promoted the human umbilical vein vessel endothelial cells proliferation and up-regulated the expression of DIP2A, while TGFβR1 inhibitor intervention down-regulated the phosphorylation level of Smad2/3 and the expression of vascular endothelial growth factor-A, which was not conducive to angiogenesis. FSTL1 bound to the receptor, DIP2A, to regulate angiogenesis mainly through the Smad2/3 signaling pathway. FSTL1–DIP2A directly activated Smad2/3 and was not affected by TGFβR1.ConclusionDynamic resistance exercise stimulates the expression of skeletal muscle-derived FSTL1, which could supplement the insufficiency of cardiac FSTL1 and promote cardiac rehabilitation through the DIP2A–Smad2/3 signaling pathway in MI rats.  相似文献