区域创新系统外生结构性风险的识别及其解耦分析   总被引：1，自引：0，他引：1  

贾晓霞  周溪召 《科学学与科学技术管理》2006,27(5):70-74

基于对区域创新系统（RIS）的理论回顾,指出了忽视RIS的外生性风险管理是部分地区区域创新系统衰退的重要原因.提出了区域创新系统外生结构性风险的概念和因素构成,给出了各要素之间的耦合关系,基于管理熵进一步构建了该耦合关系的量化描述模型,为区域创新系统外生结构性风险管理走向实用化奠定了基础.  相似文献   

健身气功调心途径研究     

王美娟  司红玉  于美刚 《山东体育学院学报》2010,26(9)

采用文献资料、逻辑分析法对健身气功的调心途径进行研究,认为:调心在"三调"中起主导作用; 由直觉体悟得出调心的过程可分为"外天下"、"外物"、"外生"三个阶段,分别经过寡欲、"抱一"、涵养道德三条层层深入的途径,来实现调心的目的和结果.  相似文献   

Role of Oxidative Stress in Various Stages of Psoriasis     

Kadam DP  Suryakar AN  Ankush RD  Kadam CY  Deshpande KH 《Indian journal of clinical biochemistry : IJCB》2010,25(4):388-392

Psoriasis is a chronic inflammatory, proliferative skin disease characterized by pathological skin lesions due to various exogenous and endogenous factors. It is associated with a number of biochemical and immunological disturbances. Recently, it has been suggested that increased reactive oxygen species (ROS) production and compromised function of antioxidant system may be involved in the pathogenesis of this disease. In the present study, 90 psoriasis patients were selected. Disease severity was assessed by psoriasis area severity index score and grouped as mild, moderate and severe (each group consists of 30 subjects) and compared with 30 healthy controls. Serum levels of malondialdehyde, nitric oxide end products and the activities of antioxidant enzymes such as erythrocyte-superoxide dismutase, catalase and total antioxidant status were investigated in these groups/subjects. As compared to controls, we found severitywise significantly increased serum malondialdehyde, nitric oxide end products with decrease in erythrocyte-superoxide dismutase activity, catalase activity and total antioxidant status in patients with psoriasis suggesting worsening of the disease. It seems to be linked with the enhancement of Reactive Oxygen Species production and decreased antioxidant potential in psoriasis.  相似文献   

抗氧化剂补充在体育生物科学中运用方向的研究   总被引：1，自引：0，他引：1  

张新辉  熊正英 《辽宁体育科技》2007,29(5):22-24

概述了运动、自由基和抗氧化剂间的联系，总结了目前自由基生物学理论在体育生物科学中的研究运用方向以及各种抗氧化剂的补充情况。  相似文献   

Effect of supplementation of vitamin E, vitamin C and reduced glutathione on copper ion induced lipoprotein oxidation in renal diseased patients—Anin vitro study     

C. S. Parameswari  B. Vijayageetha  R. Vijayakumar 《Indian journal of clinical biochemistry : IJCB》2006,21(1):131-136

The oxidative modification of lipoprotein especially low density lipoprotein (LDL) plays a key role in the initiation and progression of atherosclerosis. Serum apolipoproteinB (apoB) level is found to be an important marker for atherosclerosis. The present paper focuses on the measurement of serum apoB levels and the effect of Vitamin E, Vitamin C and reduced glutathione on the copper ion induced oxidation of LDL + VLDL (VLDL-Very Low Density Lipoprotein) lipoprotein fraction isolated from the serum of chronic renal failure (CRF) and renal transplanted patients. The level of apoB is significantly higher in the serum of transplanted patients when compared to CRF patients and normal subjects. The level of TBARS formed in oxidized LDL + VLDL lipoprotein fraction of CRF and renal transplanted patients are significantly increased than normal even in the presence of antioxidants but the level of TBARS produced, with antioxidants is comparatively lesser than that produced by oxidized lipoprotein fraction without antioxidants. It may be concluded than that produced by oxidized lipoprotein fraction without antioxidants. It may be concluded that oxidation of LDL can be prevented at an earlier stage by Vitamin E supplementation. The supplementation with Glutathione serves as the best method of preventing the lipoprotein oxidation among the renal diseased patients.  相似文献   

IDENTIFYING　SCANVENGING　EFFECTS　OF　ANTIOXIDANTS　ON　ACTIVE　OXYGEN　BY　A　NEW　SYSTEM   总被引：1，自引：0，他引：1  

DETERMINATION OF CYANIDE BY A SPECTROPHOTOMETRIC REVERSED FLOW INJECTION METHODMa Yao  Zhang Jianzhong 《中国科学院研究生院学报》1994,(1)

ＩＤＥＮＴＩＦＹＩＮＧＳＣＡＮＶＥＮＧＩＮＧＥＦＦＥＣＴＳＯＦＡＮＴＩＯＸＩＤＡＮＴＳＯＮＡＣＴＩＶＥＯＸＹＧＥＮＢＹＡＮＥＷＳＹＳＴＥＭ￥ＭａＹａｏ；ＺｈａｎｇＪｉａｎｚｈｏｎｇ（ＤｅｐａｒｔｍｅｎｔｏｆＣｈｅｍｉｓｔｒｙ，ＧｒａｄｕａｔｅＳｃｈｏ...  相似文献   

外源风险认知对幼儿体育参与行为的影响及解决策略     

全海英  刘旭阳  孔维峰 《浙江体育科学》2011,33(6)

幼儿体育参与行为对幼儿健康体质的形成会产生极大影响。文章分析探讨了影响幼儿体育参与行为的外源性风险认知因素,其认知主体主要包括：父母、幼儿园和其他监护人（祖父母或外祖父母）,阐明不良的外源风险认知对幼儿体育参与行为会产生消极影响,并给出促进幼儿体育参与行为的积极性策略。  相似文献   

产权、制度与公平竞赛--解读"假球黑哨"   总被引：11，自引：0，他引：11  

王相林 《北京体育大学学报》2004,27(6):730-732

中国足球职业联赛近年来屡屡爆出假球黑哨的丑闻或遭强烈质疑,令球迷和关心足球发展的各界人士痛惜不已.从产权和制度的角度去认识这个问题,认为:西方职业联赛中,各私有俱乐部本着追求长期利益的动机而进行的是长期重复博弈,重复博弈使得公平竞赛自我维持.而中国大多数职业俱乐部是国有资产,国有产权不可避免使俱乐部具有短期行为和维权意识弱等特点,这使得公平竞赛制度在中国联赛内部能内在维持,只能借助产生于政府的外在权威力量--中国足协来强制干预.但由于中国足协经常不能受到委托人有效的监督,足协在维护联赛公平竞赛的过程中也因而是经常缺位的,这使得外在的中国职业联赛公平竞赛制度也经常失效.  相似文献   

Temporal variation in modal properties of a base-isolated building during an earthquake     

Izuru TAKEWAKI  Mitsuru NAKAMURA 《浙江大学学报(A卷英文版)》2010,11(1):1-8

Temporal variation of dynamical modal properties of a base-isolated building is investigated using earthquake records in the building. A batch processing least-squares estimation method is applied to segment-wise time-series data. To construct an input-output system, an auto-regressive model with exogenous input （ARX） of second-order including a forgetting coefficient as a weighting coefficient is used for the estimation of modal parameters. The fundamental and second natural frequencies and the damping ratios of the fundamental and second natural modes of the base-isolated building are identified in the time domain. The identified results are consistent with the results obtained from the micro-tremor vibration data, forced-vibration test data and earthquake records in the present base-isolated building in the case of taking into account the amplitude-dependency of the iso- lators and viscous dampers. It is finally pointed out that several factors, e.g., amplitude dependency of the isolator and damper system and special characteristics of the series-type viscous damper system, may be related complicatedly with the temporal variation in modal properties of the above-mentioned system.  相似文献   

Hypoglycemic, hypolipidemic and antioxidant properties of combination ofCurcumin fromCurcuma longa, Linn, and partially purified product fromAbroma augusta, Linn. in streptozotocin induced diabetes     

Halim Eshrat M. Ali Hussain 《Indian journal of clinical biochemistry : IJCB》2002,17(2):33-43

Dietary spice components ofCurcuma longa andAbroma augusta have been screened for their protective effect against reactive oxygen species induced lipid peroxidation. They have been found to be efficient antioxidant when administered in combination. The purpose of the study was to investigate the effect of oral administration (300mg/Kg) of the aqueous extract of turmeric whose active ingredient isCurcumin andAbromine powder as a hypoglycemic agent mixed with diet. The effect of this aqueous extract on blood glucose, lipid peroxidation (LPO) and the antioxidant defense system in rat tissues like liver, lung, kidney and brain was studied for 8 weeks in streptozotocin induced diabetic rats. The administration of an aqueous extract of turmeric and abromine powder resulted in a significant reduction in blood glucose and an increase in total haemoglobin. The aqueous extract also resulted in decreased free radical formation in the tissues studied. The decrease in thiobarbituric acid reactive substances (TBARS) and increase in reduced glutathione (GSH), superoxide dismutase (SOD) and catalase (CAT) clearly showed the antioxidant property of the mixture. It is suggested that these changes initially counteract the oxidative stress in diabetes however, a gradual decrease in the antioxidative process may be one of the factors which results in chronic diabetes. These results indicate that the mixture of the two plants have shown antidiabetic activity and also reduced oxidative stress in diabetes. A combination ofAbroma augusta and Curcuma longa also restored the other general parameters in diabetic animals. The results were statistically analyzed and indicated that combination of herbal extracts showed better efficacy as compared to individual herbal plant extracts used.  相似文献