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   5243篇
  免费   343篇
  国内免费   28篇
耳鼻咽喉   75篇
儿科学   139篇
妇产科学   154篇
基础医学   672篇
口腔科学   223篇
临床医学   530篇
内科学   991篇
皮肤病学   174篇
神经病学   214篇
特种医学   274篇
外科学   846篇
综合类   92篇
一般理论   3篇
预防医学   355篇
眼科学   82篇
药学   498篇
中国医学   34篇
肿瘤学   258篇
  2023年   48篇
  2022年   147篇
  2021年   202篇
  2020年   130篇
  2019年   183篇
  2018年   233篇
  2017年   174篇
  2016年   183篇
  2015年   206篇
  2014年   279篇
  2013年   343篇
  2012年   436篇
  2011年   436篇
  2010年   271篇
  2009年   218篇
  2008年   267篇
  2007年   236篇
  2006年   216篇
  2005年   191篇
  2004年   155篇
  2003年   131篇
  2002年   115篇
  2001年   41篇
  2000年   43篇
  1999年   45篇
  1998年   50篇
  1997年   51篇
  1996年   58篇
  1995年   44篇
  1994年   39篇
  1993年   39篇
  1992年   21篇
  1991年   28篇
  1990年   27篇
  1989年   34篇
  1988年   26篇
  1987年   38篇
  1986年   33篇
  1985年   22篇
  1984年   14篇
  1983年   16篇
  1982年   17篇
  1981年   17篇
  1980年   14篇
  1979年   10篇
  1978年   12篇
  1977年   16篇
  1976年   11篇
  1975年   12篇
  1971年   8篇
排序方式: 共有5614条查询结果,搜索用时 15 毫秒
101.
102.
103.
104.
Australia is a diverse and multicultural nation, made up of a population with a predominant Christian faith. Islam, the second largest religion in the world, has demonstrated significant growth in Australia in the last decade. Coming from various countries of origin and cultural backgrounds, Muslim beliefs can range from what is considered ‘traditional’ to very ‘liberal’.It is neither possible nor practical for every intensive care clinician to have an intimate understanding of Islam and Muslim practices, and cultural variations amongst Muslims will mean that not all beliefs/practices will be applicable to all Muslims. However, being open and flexible in the way that care is provided and respectful of the needs of Muslim patients and their families is essential to providing culturally sensitive care.This discussion paper aims to describe the Islamic faith in terms of Islamic teachings, beliefs and common practices, considering how this impacts upon the perception of illness, the family unit and how it functions, decision-making and care preferences, particularly at the end of life in the intensive care unit.  相似文献   
105.
106.
Formal assessment of cognitive decline with cognitive tests can be difficult, requiring either two measurement points or a comparison of 'hold' with 'don't hold' tests. Informant-based assessment provides an alternative approach because informants can adopt a longitudinal perspective and directly rate cognitive change. A study was carried out to assess the validity of informant ratings collected by means of the Informant Questionnaire on Cognitive Decline in the Elderly (IQCODE). A community sample of 500 subjects aged 74 or over underwent four cognitive tests on two occasions 3½ years apart. On the second occasion, informants filled out the IQCODE. Subjects rated as having moderate or severe decline were found to have greater change on the cognitive tests. These findings support the validity of informant ratings of cognitive decline.  相似文献   
107.
Gwatkin DR  Bhuiya A  Victora CG 《Lancet》2004,364(9441):1273-1280
Health systems are consistently inequitable, providing more and higher quality services to the well-off, who need them less, than to the poor, who are unable to obtain them. In the absence of a concerted effort to ensure that health systems reach disadvantaged groups more effectively, such inequities are likely to continue. Yet this situation need not be accepted as inevitable, for there are many promising measures that might be pursued: establishment of goals for improved coverage in the poor, rather than in entire populations, and use of those goals to direct planning toward the needs of the disadvantaged; use of one or more of the several techniques that seem to have been effective in at least some of the settings where they have been tried; and empowerment of poor clients to have a more central role in health system design and operation.  相似文献   
108.
To evaluate the effects of a cardiac rehabilitation program on heart rate recovery after percutaneous transluminal coronary angioplasty, a historical cohort study was performed on 436 patients of whom 285 were grouped on completion of 5, 10, or 24 training sessions. All 3 groups showed significant improvements in heart rate recovery, peak heart rate during treadmill testing, and end-training heart rate, from baseline to follow-up. Heart rate recovery on follow-up correlated significantly with the number of completed exercise sessions. The number of sessions, baseline ejection fraction, and age were independent predictors of mean post-training heart rate recovery. The cardiac rehabilitation program had a significant effect on peak heart rate and heart rate recovery, regardless of the underlying characteristics of the patients.  相似文献   
109.
110.
Glucose-6-phosphate dehydrogenase (G6PD) deficiency may cause severe hyperbilirubinemia with bilirubin encephalopathy unless intervention is initiated. The aim of this study was to assess the efficacy of clofibrate in full term G6PD deficient neonates with jaundice. A randomized clinical trial study was performed in two groups of full-term G6PD deficient jaundiced neonates (clofibrate treated group, n = 21; control group, n = 19). Infants in the clofibrate group received a single oral dose of 100 mg/kg clofibrate, whereas control group received nothing. Both groups were treated with phototherapy. Serum total and direct bilirubin levels were measured at the onset of treatments, 16, 24 and 48 hours later. On enrollment, the mean total serum bilirubin (TSB) level in the clofibrate treated group was 18.40 +/- 2.41 and in the control group was 17.49 +/- 1.03 (p = 0.401). At 16, 24 and 48 hours of treatment, the mean TSB in the clofibrate group were 15.2 +/- 1.9, 12.6 +/- 2.4, and 10.1 +/- 2.4 and in the control group were 16.5 +/- 1.2, 13.3 +/- 2.2 and 11.4 +/- 2.4, respectively (p = 0.047). At 48 hours, 7 (33%) cases in the clofibrate group and one (5%) case in the control group were discharged with a TSB < 10 mg/dl (p = 0.031). No side effects were observed on serial examinations during hospitalization, or on the 1st and 7th days after discharge. The results show that clofibrate induces a faster decline in serum total bilirubin level, a shorter duration of phototherapy, and hospitalization with no side effects in full-term G6PD deficient neonates with jaundice.  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