优秀耐力运动员逐级递增负荷运动中心钠素与心血管功能变化的研究   总被引：5，自引：1，他引：4  

刘柏  王小英  安江红  胡哲  周峥 《体育科学》1994,(5)

本文采用放射免疫方法测定血浆心钠素与采用超声心动法测定心功能相结合,对10名优秀的耐力运动员和10名普通大学生进行了逐级递增负荷运动试验,以探讨运动中心脏内分泌与心血管功能的变化及其相互关系。结果发现:心脏不仅是心钠素的产生和释放部位,也是心钠素作用的靶器官之一。  相似文献   

太极拳运动对高血压患者血浆NO浓度及RBC膜钠、钙泵酶活性的影响   总被引：4，自引：0，他引：4  

陈香仙  吕慧青 《北京体育大学学报》2006,29(10):1359-1361

目的:探讨太极拳降压的作用机制.方法:采用随机对照临床试验,将40例轻中度高血压患者分为药物加太极拳锻炼(药炼组)和单纯药物组(药物组),观察实验前后血压、血浆一氧化氮(NO)浓度、红细胞(RBC)膜钠(Na -K .ATPase)、钙泵(Ca2 -Mg2 .ATPase)酶活性.结果:两组血压降幅存在差异(P＜0.05),血浆NO浓度、RBC膜钠泵活性变化存在差异(P＜0.05,P＜0.01),钙泵活性变化无差异(P＜0.05).结论:太极拳运动能改善高血压患者血管内皮细胞功能,增加NO合成与释放;促进RBC膜钠的活性;并影响中枢神经系统,降低平滑肌细胞对血管内皮收缩因子的反应性,改善血管内外阻力.太极拳运动能降低高血压.实验显示钙泵活性不活跃,证明太极拳运动并非通过影响细胞膜钙泵活性而对血管平滑肌细胞的反应性产生影响.  相似文献   

Activating lignite and sludge by electro-hydraulic impulse     

陈德淑 《重庆大学学报(英文版)》2003,2(2)

1. Introduction At present, it is necessary to use fertilizer to ensure the stable and high agricultural productivity. However, as we all know, the fertilizer not only decreases the self-fertility of soil, but also is accompanied with pesticide. Food poisoning caused by remnant pesticide in fruits and vegetables is often reported, and in such cases, chronic poisoning is the majority. The remnant pesticide accumulates in body gradually, and then induces kinds of disease. As reported, the Miyu…  相似文献   

Effect of obesity and insulin resistance on diabetic control     

Kumud Kale  D. K. Rawat 《Indian journal of clinical biochemistry : IJCB》2006,21(1):83-88

Diabetes Mellitus in obese and non-obese Indian individuals.AIMS: Effect of Obesity and insulin resistance on diabetic control.SETTINGS AND DESIGN: 50 each groups Diabetic individuals obese and non-obese.METHODS AND MATERIAL: On selected 50 each group diabetic patient and normal, following blood investigations has been performed—Plasma Glucose, Glycohemoglobin and Serum Insulin.STATISTICAL ANALYSIS USED: Individuals patient’s results were analyzed and compared with the normal controls.RESULTS AND CONCLUSION: The changes in glycosylated haemoglobin are mainly proportional to the post lunch glucose level (r=0.773) (p<0.01) and not correlated to circulating insulin or the body mass index. However the levels were higher in obese diabetes (Type I and II both) than in non-obese. Mechanism of resistance in insulin receptor interactions due to obesity is well known. However, obesity does not seem to affect directly glycosylated haemoglobin. Under such circumstances, the reduction of weight for a diabetic person can improve sugar control by minimizing insulin resistance and thereby can improve glycosylated haemoglobin levels.  相似文献   

动脉粥样硬化性脑梗塞和脑出血患者血浆可溶性血栓调节蛋白水平的研究   总被引：1，自引：0，他引：1  

刘建仁  章昀  张敏  张佩利  黄鉴政  魏尔清 《科技通报》2003,19(2):158-161

目的 探讨血浆可溶性血栓调节蛋白（Soluble thrombmodulin,sTM）与脑梗塞和脑出血患者小血管损伤、动脉粥样硬化的关系。方法 应用酶联免疫吸附方法（Enzyme-Linked Immunosorbent Assays,ELISA），检测60例脑梗塞患者、56例脑出血患者和64例健康对照的sTM水平，并分析sTM与血脂、血压的关系。结果 脑梗塞和脑出血的甘油三脂、舒张期血压明显高于对照组；脑梗塞和脑出血的高密度脂蛋白显著低于对照组；脑出血组的收缩期血压明显高于其他两组；脑梗塞的 胆固醇水平显著高于其他两组；脑出血的sTM显著高于脑梗塞和对照组，而脑梗塞的sTM显著高于对照组。sTM与总胆固醇、甘油三脂、收缩和舒张期血压水平显著正相关；sTM与高密度脂蛋白水平成显著负相关。结论 脑梗塞和脑出血存在由高血压和动脉粥样硬化导致的小血管损伤。sTM是脑卒中的独立危险因子。  相似文献   

反应等离子熔覆高铬铁基金属陶瓷增强耐磨涂层组织与性能     

王立梅 《实验技术与管理》2011,28(4):49-51

利用反应等离子熔覆技术、以Fe-Cr-C-W-Ni合金粉末为原料,在Q235钢表面制得了Cr7C3高铬铁基金属陶瓷增强耐磨复合涂层。利用SEM、EDS和X射线衍射分析了涂层的显微组织,在室温干滑动磨损试验条件下测试了涂层的耐磨性。结果表明:反应等离子熔覆Cr7C3高铬铁基金属陶瓷增强耐磨复合涂层硬度高、组织均匀、与基材之间为完全冶金结合;涂层在室温干滑动磨损试验条件下表现出优异的耐磨性,涂层磨损的质量损失随载荷增加十分缓慢,涂层具有优异的载荷特性。  相似文献   

脉冲电晕法处理含苯废气实验研究     

翁棣  张艳  楼婷婷  吕碧洪  徐涛  张文聪 《实验技术与管理》2011,28(5):32-36

挥发性有机物(VOCs)的污染与控制技术日益受到重视。近年来发展起来的非平衡等离子体技术在治理VOCs方面已初步显示其独特的技术优势,现已成为废气治理研究领域中的前沿热点课题之一。等离子体法降解VOCs的机理较为复杂,研究不同线路对VOCs降解过程的影响意义重大。采用脉冲电晕放电等离子体技术,建立了混合电晕、有机电晕、空气电晕和分别电晕4种不同的实验方案,选取苯为代表物质进行实验研究,在初始浓度、停留时间和电源参数等一定的条件下,考察脉冲电压对苯去除率的影响。结果表明,电压为140kV、混合电晕时苯的去除率达到82.73%,脉冲电晕技术处理低浓度有机废气效果较好。  相似文献   

富血小板血浆在兔下颌骨牵张成骨中的作用     

王银龙刘彩霞  朱传凤周健 《培训与研究》2006,29(2):111-114

目的 探讨富血小板血浆对兔下颌骨牵张成骨的影响。方法 将24只成年健康白兔随机分为2组，实验组在牵张期注射自体富血小板血浆于牵张间隙中，对照组不注射富血小板血浆。牵张结束后2、4、8周每组各处死4只动物取材，进行骨密度测量、组织学和扫描电镜观察。结果 所有实验动物下颌骨均被成功延长7．0mm，牵张间隙中可见新骨组织生成与改建。同对照组相比，实验组新骨生成与矿化较快，牵张间隙中骨小梁分布密度及成熟度也较高。结论 自体富血小板血浆对兔下颌骨牵张成骨可能有明显的促进作用。  相似文献   

研究生《激光等离子体相互作用原理》专业课程创新教学模式探索     

马燕云 《高等教育研究学报》2011,34(Z1):26-29

介绍了国内激光等离子体相互作用课程的教学情况、教材使用情况,国防科学技术大学理学院在该课程的教学中所进行的创新性教学模式探索实践和所取得的成效。最后总结了教学改革和人才培养的经验,对其它研究生课程建设具有一定的参考价值。  相似文献   

Comparison of digoxin concentration in plastic serum tubes with clot activator and heparinized plasma tubes     

Lora Duki?  Ana-Maria ?imundi?  Davorin Malogorski 《Biochemia medica : ?asopis Hrvatskoga dru?tva medicinskih biokemi?ara / HDMB》2014,24(1):146-150

Introduction:

Sample type recommended by the manufacturer for the digoxin Abbott assay is either serum collected in glass tubes or plasma (sodium heparin, lithium heparin, citrate, EDTA or oxalate as anticoagulant) collected in plastic tubes. In our hospital samples are collected in plastic tubes. Our hypothesis was that the serum sample collected in plastic serum tube can be used interchangeably with plasma sample for measurement of digoxin concentration. Our aim was verification of plastic serum tubes for determination of digoxin concentration.

Materials and methods:

Concentration of digoxin was determined simultaneously in 26 venous blood plasma (plastic Vacuette, LH Lithium heparin) and serum (plastic Vacuette, Z Serum Clot activator; both Greiner Bio-One GmbH, Kremsmünster, Austria) samples, on Abbott AxSYM analyzer using the original Abbott Digoxin III assay (Abbott, Wiesbaden, Germany). Tube comparability was assessed using the Passing Bablok regression and Bland-Altman plot.

Results:

Serum and plasma digoxin concentrations are comparable. Passing Bablok intercept (0.08 [95% CI = −0.10 to 0.20]) and slope (0.99 [95% CI = 0.92 to 1.11]) showed there is no constant or proportional error.

Conclusion:

Blood samples drawn in plastic serum tubes and plastic plasma tubes can be interchangeably used for determination of digoxin concentration.  相似文献