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   245404篇
  免费   5113篇
  国内免费   742篇
耳鼻咽喉   2387篇
儿科学   7464篇
妇产科学   4010篇
基础医学   28609篇
口腔科学   3192篇
临床医学   18449篇
内科学   44070篇
皮肤病学   3078篇
神经病学   21792篇
特种医学   12552篇
外科学   38206篇
综合类   2585篇
现状与发展   1篇
一般理论   19篇
预防医学   21323篇
眼科学   4281篇
药学   15532篇
中国医学   1465篇
肿瘤学   22244篇
  2023年   565篇
  2022年   1688篇
  2021年   2649篇
  2020年   1303篇
  2019年   1752篇
  2018年   23813篇
  2017年   18755篇
  2016年   21513篇
  2015年   4148篇
  2014年   4610篇
  2013年   5174篇
  2012年   13492篇
  2011年   26876篇
  2010年   22145篇
  2009年   14338篇
  2008年   23653篇
  2007年   25407篇
  2006年   4025篇
  2005年   5253篇
  2004年   6053篇
  2003年   6608篇
  2002年   4478篇
  2001年   1954篇
  2000年   1971篇
  1999年   1335篇
  1998年   689篇
  1997年   551篇
  1996年   390篇
  1995年   361篇
  1994年   312篇
  1993年   248篇
  1992年   456篇
  1991年   486篇
  1990年   470篇
  1989年   404篇
  1988年   372篇
  1987年   350篇
  1986年   246篇
  1985年   244篇
  1984年   173篇
  1983年   172篇
  1982年   105篇
  1981年   76篇
  1980年   104篇
  1979年   122篇
  1978年   95篇
  1976年   69篇
  1975年   69篇
  1974年   90篇
  1970年   80篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
41.
42.
43.
This article describes a modified suture technique designed for the vertical repair of the anterior horn of the meniscus after arthroscopic decompression of a large meniscal cyst. This procedure comprises of three steps: first, the meniscus was pierced vertically using a suture hook and a No. 0 PDS suture. Second, both ends of the No. 0 PDS on the femoral and tibial surfaces of the meniscus were pulled to the outside of the joint capsule using a spinal needle preloaded with suture material. Finally, a skin incision was made adjacent to the suture materials, and both ends were tied. We recommend this technique not only for the vertical repair of the anterior horn of the meniscus after decompression of large meniscal cyst, but also to repair a longitudinal tear of the meniscus.  相似文献   
44.
Background/purpose: Vitiligo and nevus depigmentosus (ND) present similar hypopigmented macules with significantly different prognoses. Although the distinction between the two diseases is important, differential diagnosis relies on medical history and physical examination, which is far from decisive in some cases. The Mexameter® is an objective skin color-measuring device, and has been reported to provide a reproducible and sensitive means of quantifying small skin color differences. In this study, we investigated the usefulness of a Mexameter® for discriminating these diseases.
Methods: A selection of 202 hypopigmented skin lesions (182 from vitiligo and 20 from ND) were the objects of this study. Using a Mexameter, MIs were obtained from lesions and symmetrically located control skin. RMIs, ratios of the MIs of lesional skins to control skins, were calculated.
Results: The mean MIs and RMIs were significantly different for vitiligo and ND. The mean RMI of ND lesions was 74±13, which was significantly higher than that of vitiligo lesions (50±24). No ND lesion had an RMI of <50%.
Conclusion: This study shows that the Mexameter®, an objective pigment-measuring device, can be used to achieve a more accurate diagnosis of hypopigmentary disorders, and that the relative melanin index (RMI), which represents the relative pigment levels, might be a more effective parameter than the melanin index (MI) itself for comparing pigmentation differences.  相似文献   
45.
46.
Anliegen dieses Artikels ist, die besondere Qualit?t und Chance von Psychodramatischer Supervision zu beschreiben, und gleichzeitig die Kompatibilit?t und fruchtbare Erg?nzung des Moreno’schen Ansatzes innerhalb des Formats Supervision innerhalb der Sozialen Arbeit auf zuzeigen. Dies wird anhand von 2 ausgew?hlten Praxisbeispielen dargestellt. Die Handlungskompetenz von Supervisandinnen und Supervisanden kann durch einfache psychodramatische Interventionen erweitert werden. Handlungshemmung wird überwunden, Spontaneit?t und Kreativit?t kommen ins Laufen und er?ffnen Perspektiven.  相似文献   
47.
48.
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   
49.
Coronary flow reserve (CFR) has been used toassess coronary microcirculation and epicardial coro-nary stenoses[1— 3 ] . CFR is defined as the ratio ofcoronary flow under maximal coronary vasodilatationto coronary flow under resting conditions[4 ] .Whenthe cross- sectional area of epicardial coronary arteriesis constant,coronary flow velocity (CFV) ratios areequal to volume flow ratios.The most common method used clinically formeasuring CFVR is intracoronary Doppler flow(ICD) analysis re…  相似文献   
50.
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