首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   239篇
  免费   6篇
  国内免费   6篇
教育   116篇
科学研究   51篇
体育   50篇
综合类   23篇
信息传播   11篇
  2022年   5篇
  2021年   10篇
  2020年   11篇
  2019年   4篇
  2018年   3篇
  2017年   5篇
  2016年   4篇
  2015年   7篇
  2014年   14篇
  2013年   22篇
  2012年   22篇
  2011年   13篇
  2010年   17篇
  2009年   13篇
  2008年   9篇
  2007年   12篇
  2006年   9篇
  2005年   10篇
  2004年   11篇
  2003年   11篇
  2002年   8篇
  2001年   9篇
  2000年   8篇
  1999年   6篇
  1998年   2篇
  1997年   1篇
  1996年   1篇
  1995年   1篇
  1994年   1篇
  1993年   1篇
  1985年   1篇
排序方式: 共有251条查询结果,搜索用时 15 毫秒
31.
台州学院高级职称教师及处级以上干部健康状况分析   总被引:1,自引:0,他引:1  
台州学院高级职称教师及处级以上干部189人体检结果显示:脂肪肝患病率14.81%,高脂血症患病率29.63%,糖尿病患病率11.63%,高血压患病率26.98%。针对患病率较高的这四种疾病进行分析,并提出了对上述四种慢性疾病作好防治工作的对策。  相似文献   
32.
生活中人们的情绪变化对健康状况有很大的影响,其影响通过人体内部生理变化为中介而产生。不良的情绪变化是导致多种疾病的重要因素,合理控制调节情绪又可以治疗许多疾病。为了更加清楚地论述分析其影响机理,文中运用了大量的实际案例,便于引导读者理解和深思。  相似文献   
33.
阴香粉实病简况   总被引:2,自引:0,他引:2       下载免费PDF全文
本文简单介绍了阴香粉实病的症状、病原、发生规律和防治方法.  相似文献   
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   
35.
以中山大学热带病防治研究教育部重点实验室为例,分析实验室通过健全科普管理体系、规范化和专业化科普资源及品牌化科普活动等机制,运用开放交流、社区教育和社会服务等方式,开展具有特色的科普活动,将科研成果以科普信息的方式传播给大众,提高公众的科学素质,增强热带病疾病防控的实效。为进一步完善科研实验室面向公众开放,开展科普活动的相关形式、制度和管理提供经验借鉴。  相似文献   
36.
This review evaluated the effects of precooling via cold water immersion (CWI) and ingestion of ice slurry/slushy or crushed ice (ICE) on endurance performance measures (e.g. time-to-exhaustion and time trials) and psychophysiological parameters (core [Tcore] and skin [Tskin] temperatures, whole body sweat [WBS] response, heart rate [HR], thermal sensation [TS], and perceived exertion [RPE]). Twenty-two studies were included in the meta-analysis based on the following criteria: (i) cooling was performed before exercise with ICE or CWI; (ii) exercise longer than 6?min was performed in ambient temperature ≥26°C; and (iii) crossover study design with a non-cooling passive control condition. CWI improved performance measures (weighted average effect size in Hedges’ g [95% confidence interval]?+?0.53 [0.28; 0.77]) and resulted in greater increase (ΔEX) in Tskin (+4.15 [3.1; 5.21]) during exercise, while lower peak Tcore (?0.93 [?1.18; ?0.67]), WBS (?0.74 [?1.18; ?0.3]), and TS (?0.5 [?0.8; ?0.19]) were observed without concomitant changes in ΔEX-Tcore (+0.19 [?0.22; 0.6]), peak Tskin (?0.67 [?1.52; 0.18]), peak HR (?0.14 [?0.38; 0.11]), and RPE (?0.14 [?0.39; 0.12]). ICE had no clear effect on performance measures (+0.2 [?0.07; 0.46]) but resulted in greater ΔEX-Tcore (+1.02 [0.59; 1.45]) and ΔEX-Tskin (+0.34 [0.02; 0.67]) without concomitant changes in peak Tcore (?0.1 [?0.48; 0.28]), peak Tskin (+0.1 [?0.22; 0.41]), peak HR (+0.08 [?0.19; 0.35]), WBS (?0.12 [?0.42; 0.18]), TS (?0.2 [?0.49; 0.1]), and RPE (?0.01 [?0.33; 0.31]). From both ergogenic and thermoregulatory perspectives, CWI may be more effective than ICE as a precooling treatment prior to exercise in the heat.  相似文献   
37.
对河北省平泉县食用菌基地调查发现,危害滑子菇常见病虫害有细菌性斑点病、黏菌病、木霉病、胡桃肉状菌、尖眼蕈蚊,并提出了无公害防治措施。  相似文献   
38.
采后病害是冬枣贮藏过程中的难题.对冬枣采后病害的类型、致病菌种类及其防治技术进行了分析概述,为冬枣贮藏环节有效控制病害发生提供技术参考和依据.  相似文献   
39.
Abstract

The aim of this cross-sectional study was to compare body composition and risk factors of lifestyle-related diseases between young and older male rowers and sedentary controls. Healthy males aged 19–73 years participated in the study, and were divided into four groups: 26 young rowers, 24 senior rowers, 23 young sedentary controls, and 22 senior sedentary controls. Total and regional lean soft tissue, fat mass, and bone mineral density were measured using dual-energy X-ray absorptiometry. The HDL-cholesterol of senior rowers (67.4 ± 13.4 mg · dl?1) was significantly (P < 0.05) higher than that of senior sedentary controls (59.2 ± 11.9 mg · dl?1), while HDL-cholesterol was similar in senior rowers and young rowers (66.1 ± 10.8 mg · dl?1). Arm, leg, and trunk lean soft tissue mass were significantly higher in senior rowers (5.6 ± 0.6 kg, 18.2 ± 1.8 kg, and 27.3 ± 3.2 kg respectively) than in senior sedentary controls (5.1 ± 0.4 kg, 16.3 ± 1.4 kg, and 24.6 ± 1.7 kg respectively; P < 0.05). Bone mineral density was also significantly higher in senior rowers than in senior sedentary controls (ribs, lumbar spine, and pelvic segments; P < 0.05). We conclude that age-related increases in the risk of lifestyle-related diseases, such as osteoporosis and sarcopenia, are attenuated in male rowers. These results suggest that regular rowing exercise may have a positive influence in the prevention of lifestyle-related diseases in older Japanese people.  相似文献   
40.
The calcineurin inhibitors (CNIs) [cyclosporin A (CsA) and tacrolimus (Tac)] are currently the most widely prescribed drugs for maintenance of immunosuppression after renal transplantation. These immunosuppressants are associated with side effects such as hyperlipidemia. We evaluated the differential effects of different CNIs on serum lipid parameters in renal transplant patients. Moreover, the aim of this study is to investigate the relationships between doses and blood levels of CNIs, and blood levels of CNIs and lipid parameters retrospectively. Two groups of 98 non-diabetic renal transplant patients, each treated with different CNIs, were studied: group A (n = 50, mean age: 31 ± 10 years), CsA, mycophenolate mofetil/azathioprin, steroid; group B (I = 48, mean age: 34 ± 12 years), Tac, mycophenolate mofetil/azathioprin, steroid. In renal transplant patients, CNIs blood levels and doses were examined at 1, 3, 6, 9, and 12 months after transplantation. Biochemical laboratory parameters including plasma lipids [total-cholesterol (CHOL), low-density lipoprotein (LDL)–CHOL, high-density lipoprotein (HDL)–CHOL, and triglycerides (TG)], CNI levels and doses were examined at 1, 3, 6, 9, and 12 months after transplantation. None of the patients received anti-lipidemic drugs during the study period. Blood levels of CNIs were detectable in all whole-blood samples by Cloned- Enzyme-Donor Immunoassay (CEDIA). The relationship between CNIs blood levels and CHOL, (LDL)–CHOL, HDL–CHOL, TG were evaluated. The mean serum CHOL levels and LDL–CHOL levels of patients in group A were found significantly higher than the patients in group B during the 12 month of follow up (p < 0.05). There was no significant difference in TG and HDL–CHOL plasma levels between group A and group B (p > 0.005). In group A the daily dose of CsA was significantly correlated with the mean blood levels of CsA at the 1st and 3rd months (r = 0.387, p = 0.005; r = 0.386, p = 0.006), respectively. In group A, the daily dose of CsA was significantly correlated with the mean serum TG levels during the 12 month of follow up (r = 0.420, p = 0.003). In group B, the daily dose of Tac was significantly correlated with the mean blood level of Tac (r = 0.335, p = 0.020) at the 1st month. No correlation was found between mean Tac blood levels and lipid parameters during the 12-month of follow up (p > 0.05). Significant positive correlation was observed between the CsA blood levels and LDL–CHOL levels (r = 0.338, p = 0.027) at the 3rd month. In the renal transplant patients with well functioning grafts, CsA therapy is associated with increased CHOL and LDL–CHOL ratio which represents an increased atherogenic risk tended to be associated with CsA. Serum LDL–CHOL levels may be effected by blood CsA levels.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号