血脂比值与冠脉狭窄程度的相关分析     

方叶青  谢秀梅  余萍  陈双秀 《岳阳职业技术学院学报》2007,22(4):53-57

目的探讨冠心病患者的血脂比值和单项血脂与冠脉狭窄严重程度的相关性。方法对已行冠状动脉造影的阳性病人(最少有一支血管狭窄≥50%)的各项血脂及其比值进行检测,并与其冠脉狭窄程度进行相关分析。结果①在单项血脂中,TG、CHO、LDL、LP(a)均与冠脉狭窄程度呈正相关,而HDL和apoA与冠脉狭窄程度呈负相关。②在血脂比值中,CHO/HDL、apoB/apoA TG/apoA、CHO/apoA LDL/apoA值均随冠脉狭窄程度加重而增加,且差异有显著性意义。③血脂比值比单项血脂反映CAD的敏感度更高。结论:对于CAD患者,血脂比值反映冠脉狭窄的严重程度较单项血脂更敏感更早期。  相似文献   

Discussion of competences at university level: review of the competency profile of social educators / Discusión de competencias en el ámbito universitario: revisión del perfil del educador social     

María-Dolores Eslava-Suanes  Ignacio González-López  Carlota de-León-Huertas 《Cultura y Educación》2018,30(2):393-413

Training in competences helps university students develop in a comprehensive way that is oriented towards working in their chosen profession. The profession focused on in this study is that of social educator. Degree programmes related to this profession are relatively new and their implementation is also open to variation. As a result of this, a review of the competency profile of the profession is considered necessary. The study presented here aims to validate the competences of this profession by means of expert judgement. The panel of experts assesses the relevance and clarity of each element, as well as giving their opinions on them. The contributions provided result in a set of qualitative and quantitative data whose analysis helps to redefine a profile comprising 23 competences distributed across two dimensions: basic competences (14) and professional competences (9).  相似文献   

Research on temperature profiles of honeycomb regenerator with asymptotic analysis     

AI Yuan-fang MEI Chi HUANG Guo-dong JIANG Shao-jian CHEN Hong-rong 《重庆大学学报(英文版)》2006,5(2):77-82

1 Introduction 1 High temperature air combustion (HTAC) [1] can offer significantly improved thermal efficiency, reduced NOx emission and uniform heat flux field. Most of HTAC use the honeycomb regenerative system to preheat the air to a temperature above…  相似文献   

锰对大豆膜脂过氧化及POD和CAT活性的影响研究   总被引：11，自引：0，他引：11  

胡蕾  施益华  刘鹏  徐根娣  王芳  章丹丹  李奇勇 《金华职业技术学院学报》2003,3(1):29-32

利用水培方法,研究了不同锰浓度(0、0.003、0.03、3、3.0、30mg/kg)对浙春2号和浙春3号大豆膜脂过氧化和POD(过氧化物酶)和CAT(过氧化氢酶)活性的影响。结果表明：高锰(30mg/kg)和缺锰胁迫将显著增加了质膜透性,大大降低了POD和CAT的活性;而适量的锰(0．03—3mg/kg)对于提高POD和CAT的活性,降低质膜透性都有积极的作用。2个大豆品种对锰的反应存在一定的基因型差异,浙春2号对缺锰和高锰胁迫的抵御能力大于浙春3号。  相似文献   

Who mentors undergraduate student researchers? An analysis of faculty involvement at a four-year university     

Donna Chamely-Wiik  Brian T. Cooney  Michael A. DeDonno 《Mentoring & Tutoring: Partnership in Learning》2020,28(1):78-97

ABSTRACT

In this study, we investigated a profile of faculty who mentor undergraduate researchers at a four-year Hispanic-serving, public research university. Six variables were investigated: ethnicity, gender, age, tenure status, teaching evaluations, and research productivity. Data were compiled from institutional databases. Findings showed a greater percentage of tenured faculty mentoring undergraduate researchers while the percent of minority UR faculty mentors was consistent with institutional percentages. Additionally, findings included a higher percentage of Science, Technology, Engineering, and Math (STEM) Undergraduate Research (UR) underrepresented minority faculty mentors compared to STEM Institution (INST) underrepresented minority faculty. For research productivity, UR faculty mentor funding comprised 28.0% of all external grant awards and 36.0% of all external funding during the sampling period. The majority funding for INST and UR faculty were found to be in the STEM disciplines. These findings provide evidence of potential predictors to describe UR faculty mentor profiles and can be considered important information for determining future educational policies and practices.  相似文献   

Exploring profiles of ideal high school mathematical teaching behaviours: perceptions of in-service and pre-service teachers in Taiwan     

Feng-Jui Hsieh  Qian Chen 《Educational studies》2018,44(4):468-487

This study explored and compared the perspectives of Taiwanese in-service and pre-service high school mathematics teachers regarding ideal teaching behaviours; the perspectives of a nationwide sample of students were taken as the baseline. Fourteen factors contributing to ideal teaching behaviours were identified through exploratory factor analyses. Nine factors, including idea explanation and speedy lecture, were rooted in traditional Chinese culture; five factors, including concrete representation and student activities, were influenced by Western cultures. Three teacher profiles were identified through k-means clustering analysis. The perspectives of in-service teachers were dominated by a painless meaning-emphasised profile; these teachers emphasised meaningful learning for students and avoided the fast pace and demanding requirements that can cause distress in students, whereas pre-service teachers were dominated by an all-round profile, revealing their openness to all factors. Compared with pre-service teachers, in-service teachers’ perspectives were more similar to those of students.  相似文献   

Rat serum electrolytes, lipid profile and cardiovascular activity onNauclea latifolia leaf extract administration     

M. I. Akpanabiatu  I. B. Umoh  E. O. Udosen  A. E. Udoh  E. E. Edet 《Indian journal of clinical biochemistry : IJCB》2005,20(2):29-34

Aqueous extract of the leaf and root ofNauclea latifolia Sm. (Rubiaceae) is used in Nigerian folk medicine for the treatment of hypertension. This work is carried out to investigate the effect ofNauclea latifolia leaf extract on lipid profile and cardiovascular activity of rats. Normal and 10% coconut oil fed rats were treated with the water-soluble fraction of the ethanol extract ofNauclea latifolia leaf for 2 weeks. Forty-eight mature male albino rats of the Wistar strain were divided into two experiments of four groups, each group having 6 animals. Experiment I animals were treated with the water-soluble fraction of the ethanol extract whilst experiment II animals were fed 10% coconut oil meal before treatment with the water-soluble fraction of the ethanol extract. A single oral dose ofNauclea latifolia was 170, 340 and 510 mg/kg body wt/day of the extracts respectively for 2 wks. There was no significant change in the lipid profile of the experimental animals as compared with the controls. There was about 40% relaxation on contracted thoracic aorta that was pre-contracted with 2 μM phenylephrine. The viability of the tissue was tested against 10 μM of acetylcholine. There was no significant (P>0.05) change in Na⁺ concentration in the serum. However, the K⁺ concentration in the serum of the experimental animals showed a significant increase. The study shows that ethanol extract ofNauclea latifolia has vasodilator action on the aorta and that lipid profiles of experimental rats were not affected. Furthermore, the increase in the K⁺ may be contributing to the vasodilator effect ofNauclea latifolia.  相似文献   

Effects of flaxseed<Emphasis Type="Italic">(Linum usitatissimum) chutney</Emphasis> on gamma-glutamyl transpeptidase and micronuclei profile in azoxymethane treated rats     

K. A. Faseehuddin Shakir  Basavaraj Madhusudhan 《Indian journal of clinical biochemistry : IJCB》2007,22(2):129-131

Antioxidant property of flaxseed chutney was evident by decreasing lipid peroxidation (TBARS) and predictor enzyme γ-glutamyl transpeptidase profile and micronuclei formation in azoxymethane treated rats. After 10 weeks, rats fed with either fiber-free basal diet or Antioxidant diet exhibited over sevenfold increase in γ-glutamyl transpeptidase activity and nearly fourfold increase in micronuclei load in comparison to controls (p<0.001). A significant reduction in both γ-glutamyl transpeptidase level (52%) and micronuclei formation (47%) was observed in fiber-free basal diet/Antioxidant diet/flaxseed chutney diet fed rats. Relative to rats fed fiber-free basal diet, the profile of γ-glutamyl transpeptidase and micronuclei load was not significantly altered.  相似文献   

Evaluation of antioxidant properties of berries     

P. Rani  K. Meena Unni  J. Karthikeyan 《Indian journal of clinical biochemistry : IJCB》2004,19(2):103-110

The present paper focuses on assessing the levels of various enzymatic and non-enzymatic antioxidants in selected berries of Indian sub-continent viz., gooseberry, grapes, orange and tomato. This study has revealed that orange, tomato and grapes possess predominant quantities of enzymatic antioxidants namely SOD, catalase and glutathione peroxidase respectively. The levels of antioxidants analyzed namely reduced glutathione, vitamin C and vitamin A were maximal in grapes, orange and tomato respectively. All the extracts of berries included in the present study inhibited iron inducedin vitro lipid peroxidation in erythrocytes, the extend of inhibition being highest for gooseberry and orange compared to tomato and grapes which could be attributed to their in-built antioxidant system.  相似文献   

太极拳对老年人血脂、血液流变学指标影响的追踪研究   总被引：27，自引：2，他引：25  

王忠山 《天津体育学院学报》1999,14(1):51-53

为探索太极拳对老年人的健身意义,该研究对５３名老年受试者进行了３年追踪研究。结果表明：老年人常年坚持太极拳运动可调节脂类代谢,降低血脂,增加高密度脂蛋白胆固醇以及高密度脂蛋白胆固醇和总胆固醇的比值,增强对心血管系统的保护机制,并可改善以血粘度为代表的血液流变学指标。本研究未见随增龄而血粘度增高的情况  相似文献