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   60644篇
  免费   4493篇
  国内免费   1290篇
耳鼻咽喉   972篇
儿科学   2133篇
妇产科学   940篇
基础医学   7069篇
口腔科学   990篇
临床医学   4620篇
内科学   10863篇
皮肤病学   1121篇
神经病学   14342篇
特种医学   1419篇
外国民族医学   10篇
外科学   5393篇
综合类   3459篇
现状与发展   3篇
一般理论   4篇
预防医学   3357篇
眼科学   1149篇
药学   4530篇
  14篇
中国医学   2024篇
肿瘤学   2015篇
  2023年   1156篇
  2022年   1475篇
  2021年   3051篇
  2020年   2883篇
  2019年   3559篇
  2018年   3366篇
  2017年   2833篇
  2016年   2166篇
  2015年   2166篇
  2014年   4640篇
  2013年   6048篇
  2012年   3676篇
  2011年   3690篇
  2010年   2833篇
  2009年   2668篇
  2008年   2471篇
  2007年   1971篇
  2006年   1597篇
  2005年   1321篇
  2004年   1367篇
  2003年   1161篇
  2002年   901篇
  2001年   737篇
  2000年   716篇
  1999年   543篇
  1998年   358篇
  1997年   366篇
  1996年   250篇
  1995年   288篇
  1994年   284篇
  1993年   255篇
  1992年   196篇
  1991年   189篇
  1990年   171篇
  1989年   140篇
  1988年   123篇
  1987年   101篇
  1985年   608篇
  1984年   646篇
  1983年   411篇
  1982年   494篇
  1981年   431篇
  1980年   350篇
  1979年   337篇
  1978年   279篇
  1977年   218篇
  1976年   216篇
  1975年   236篇
  1974年   170篇
  1973年   175篇
排序方式: 共有10000条查询结果,搜索用时 218 毫秒
81.
82.
This article explores the creation of a new social welfare system for physically disabled veterans and civilians of the Great War in Belgium during the early interwar period. Through an analysis of debates among ministers and legislators, doctor's opinions and the member's periodicals of the two largest national associations for war-wounded veterans and civilians it examines how these actors shaped a new set of benefits that caused significant socio-economic inequalities inside and between both groups of victims and in relation to physically disabled citizens without war injuries. Consequently, this article reveals how the welfare system characterised a reimagining of war compensation, the physically disabled worker and disability equality in Belgium.  相似文献   
83.
84.
BackgroundMenopausal symptoms have negative effects on the aspects of quality of life and impose a high cost on the health system. In traditional Persian medicine, pomegranate is recommended to alleviate menopausal symptoms.Material and methodsA randomized double-blind placebo-controlled trial was performed among 78 healthy women. Participants were interviewed three times: Before receiving the supplement/placebo, after completing the treatment, and after 3 weeks with no intervention. They filled out the demographic information sheet, modified-Kupperman index, and Menopause-Specific Quality of Life (MENQOL) questionnaires.ResultsThe mean scores of the modified-Kupperman index and MENQOL characteristics before and after the treatment and after the follow-up period were significantly different between pomegranate and placebo groups in both modified-Kupperman and MENQOL scores (p < 0.001).ConclusionThis study demonstrated that 4 weeks' treatment with the pomegranate supplement significantly ameliorates the irritating symptoms of menopause and improves the quality of life in menopausal women even after 4 weeks' medicine deprivation.  相似文献   
85.
86.
87.
88.
89.
Intravascular papillary endothelial hyperplasia or Masson's tumour is a non-neoplastic vascular lesion of reactive character. It is a rare diagnosis, clinically non-specific and with diverse locations. It is essential to take it into consideration and make a differential diagnosis with malignant vascular tumours such as angiosarcoma. Pathological study is fundamental for diagnosis. Treatment consists of complete resection of the tumour, including sufficiently wide margins to avoid recurrence.The case reported is an exceptional event, because of the pelvic location of the Masson's tumour that was diagnosed as part of the surgical staging of an ovarian cancer.  相似文献   
90.
PurposeTo explore the effect of time on grading corneal fluorescein and conjunctival lissamine green staining in dry eye disease (DED).MethodsPhotographs of 68 subjects with non-Sjogren's DED (nSS DED) and 32 with Sjogren's DED (SS DED) were taken of corneal fluorescein staining, then conjunctival lissamine green staining every 30 s for at least 5 min. Photographs of one randomly selected eye were then randomly ordered and graded on a scale from 0 to 5 (severe staining) by two clinicians, masked to both site and subject. The average time required to reach the maximum grade of staining (Gmax) was calculated.ResultsThe median time (upper and lower quartiles) to corneal fluorescein Gmax was 2.6 (1.3–5.3) minutes for nSS DED and 3.8 (2.6–5.4) minutes for SS DED, a statistically significant difference (Mann Whitney U test, p = 0.018). In contrast, the median time to the Gmax for lissamine green staining of the nasal and temporal conjunctiva was 0.5 (0.5–1.1 nasal, 0.5–0.8 temporal) minutes for nSS DED and 0.5 (0.5–0.8 nasal, 0.5–0.5 temporal) minutes for SS DED subjects, which was not statistically significant (p ≥ 0.383).ConclusionsThe time required to reach the maximum grade of corneal fluorescein staining, but not conjunctival lissamine green staining, varied widely and was significantly longer in subjects with Sjögren's Syndrome. Early observation of corneal fluorescein staining can lead to under-grading, which may impact the diagnosis and assessment of treatment in DED. Further study of the best time to assess corneal fluorescein staining in various DED populations is warranted.  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