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   128230篇
  免费   8795篇
  国内免费   465篇
耳鼻咽喉   1656篇
儿科学   3400篇
妇产科学   2174篇
基础医学   16522篇
口腔科学   2397篇
临床医学   13032篇
内科学   27349篇
皮肤病学   1986篇
神经病学   12242篇
特种医学   4497篇
外国民族医学   4篇
外科学   18685篇
综合类   1918篇
现状与发展   1篇
一般理论   168篇
预防医学   11314篇
眼科学   2941篇
药学   8949篇
  2篇
中国医学   172篇
肿瘤学   8081篇
  2023年   512篇
  2022年   852篇
  2021年   2118篇
  2020年   1261篇
  2019年   2064篇
  2018年   2377篇
  2017年   1845篇
  2016年   2010篇
  2015年   2467篇
  2014年   3532篇
  2013年   5468篇
  2012年   7930篇
  2011年   8477篇
  2010年   4799篇
  2009年   4612篇
  2008年   8122篇
  2007年   8685篇
  2006年   8538篇
  2005年   8805篇
  2004年   8325篇
  2003年   8150篇
  2002年   7707篇
  2001年   1317篇
  2000年   1065篇
  1999年   1349篇
  1998年   1750篇
  1997年   1482篇
  1996年   1193篇
  1995年   1180篇
  1994年   973篇
  1993年   987篇
  1992年   835篇
  1991年   780篇
  1990年   732篇
  1989年   698篇
  1988年   641篇
  1987年   605篇
  1986年   605篇
  1985年   736篇
  1984年   873篇
  1983年   866篇
  1982年   1190篇
  1981年   1075篇
  1980年   968篇
  1979年   533篇
  1978年   609篇
  1977年   581篇
  1976年   479篇
  1975年   434篇
  1974年   400篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
61.
For many parents stopping life-sustaining medical treatment on their dying infant is psychologically impossible. Dostoevsky's insights into human behavior, particularly the fact that individuals do not want the anxiety and guilt associated with responsibility for making difficult decisions, might change the way physicians approach parents for permission to withdraw life-prolonging medical interventions on dying infants.  相似文献   
62.
63.
INTRODUCTION: Vasopressin, mainly through the V1a-receptor, is thought to be a major player in the maintenance of hyperfiltration. Its inhibition could therefore lead to a decrease in progression of chronic renal failure. To this end, the effect of the vasopressin V1a-receptor-selective antagonist, YM218, was studied on proteinuria and focal glomerulosclerosis in early and late intervention after 5/6 nephrectomy in rats, and compared with an angiotensin-converting enzyme inhibitor (ACE-I). MATERIALS AND METHODS: After 5/6 nephrectomy, early intervention was performed between week 2 and 10 thereafter with the V1a-receptor-selective antagonist (VRA, 10 mg/kg/day, n=10), enalapril (ACE-I, 10 mg/kg/day, n=9), or vehicle (n=8). Late intervention was performed in another group between week 6 and 12 with VRA (10 mg/kg/day, n=7), lisinopril (ACE-I, 5 mg/kg/day, n=7), or vehicle (n=7). RESULTS: In early intervention, proteinuria and focal glomerulosclerosis were significantly decreased by VRA compared to vehicle (44+7% and 59+8% respectively). ACE-I significantly decreased proteinuria (67+7%) and a trend towards a decrease in focal glomerulosclerosis was observed (30+18%). In late intervention, VRA did not decrease proteinuria and focal glomerulosclerosis compared to vehicle (21+20% and 0%, respectively), ACE-I significantly lowered proteinuria (92+2%) and a focal glomerulosclerosis (69+1%) lowering trend was observed. CONCLUSION: These results indicate that VRA may protect against early progression of renal injury after 5/6 nephrectomy, whereas its effectiveness seems limited in established renal damage.  相似文献   
64.
Insomnia     
  相似文献   
65.
Relationship-centered care reflects both knowing and feeling: the knowledge that physician and patient bring from their respective domains of expertise, and the physician’s and patient’s experience, expression, and perception of emotions during the medical encounter. These processes are conveyed and reciprocated in the care process through verbal and nonverbal communication. We suggest that the emotional context of care is especially related to nonverbal communication and that emotion-related communication skills, including sending and receiving nonverbal messages and emotional self-awareness, are critical elements of high-quality care. Although nonverbal behavior has received far less study than other care processes, the current review argues that it holds significance for the therapeutic relationship and influences important outcomes including satisfaction, adherence, and clinical outcomes of care.  相似文献   
66.
Kroczek  Richard 《JAMA》2006,296(22):2741-2742
  相似文献   
67.
68.
Background.Computers that collect data from patients and provide both patients and practitioners with printed feedback on a range of health risks are a tool for assisting general practitioners with preventive care. This study assessed the impact of computer-generated printed feedback on cervical screening among women who were underscreened for cervical cancer.Method.Female attenders at two Australian general practices were randomly allocated to Experimental or Control groups. Women in both groups completed a health risk survey on a touch screen computer prior to their consultation. Those in the Experimental group received printed pages summarizing their results, including their eligibility for cervical screening and last Pap test, for themselves and their doctor. The number and proportion of underscreened women who had a Pap test in the 6 months after completing the computer survey, as determined by pathology records, were examined.Results.Of the 679 participants, 139 were classified as underscreened on the basis of self-report (74 Experimental, 65 Control) and 272 on the basis of their pathology records (148 Experimental, 124 Control). Overall about one-third of women had a test in the 6-month period, and the differences between the groups were not significant for women overall (18–70 years) or for women 18–49 years. Among women 50–70 who were underscreened based on self-report, those receiving the printout were more likely to have a Pap test in the next 6 months (P< 0.05). This pattern was also evident, but did not reach statistical significance, for older women who were underscreened based on pathology records.Conclusions.We are unable to draw conclusions regarding the effectiveness of the computer system due to the modest proportions of women screened, the small numbers, and the fact that the computer survey may have created an intervention effect in the Control group. As the study suggests the computer system is acceptable to women and may be effective for encouraging screening among older women, further exploration of the system is desirable.  相似文献   
69.
70.
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