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   291368篇
  免费   62356篇
  国内免费   15059篇
耳鼻咽喉   3368篇
儿科学   6552篇
妇产科学   3011篇
基础医学   42026篇
口腔科学   8842篇
临床医学   40126篇
内科学   54364篇
皮肤病学   10033篇
神经病学   24056篇
特种医学   11127篇
外国民族医学   118篇
外科学   34991篇
综合类   37221篇
现状与发展   65篇
一般理论   33篇
预防医学   18065篇
眼科学   7571篇
药学   28856篇
  200篇
中国医学   12798篇
肿瘤学   25360篇
  2024年   663篇
  2023年   3474篇
  2022年   8512篇
  2021年   11955篇
  2020年   12664篇
  2019年   17178篇
  2018年   16916篇
  2017年   17590篇
  2016年   18171篇
  2015年   21543篇
  2014年   23775篇
  2013年   22863篇
  2012年   20476篇
  2011年   22408篇
  2010年   19954篇
  2009年   14204篇
  2008年   13851篇
  2007年   12819篇
  2006年   12680篇
  2005年   11922篇
  2004年   8220篇
  2003年   7972篇
  2002年   6934篇
  2001年   5820篇
  2000年   5776篇
  1999年   5726篇
  1998年   3579篇
  1997年   3505篇
  1996年   2728篇
  1995年   2401篇
  1994年   2128篇
  1993年   1381篇
  1992年   1630篇
  1991年   1417篇
  1990年   1239篇
  1989年   1098篇
  1988年   863篇
  1987年   792篇
  1986年   622篇
  1985年   451篇
  1984年   244篇
  1983年   183篇
  1982年   114篇
  1981年   122篇
  1980年   82篇
  1979年   82篇
  1978年   7篇
  1975年   7篇
  1973年   10篇
  1972年   6篇
排序方式: 共有10000条查询结果,搜索用时 21 毫秒
81.
82.
83.
There is a large and growing population of long-term cancer survivors. Primary care physicians (PCPs) are playing an increasingly greater role in the care of these patients across the continuum of cancer survivorship. In this role, PCPs are faced with the responsibility of managing a range of medical and psychosocial late effects of cancer treatment. In particular, the sexual side effects of treatment which are common and have significant impact on quality of life for the cancer survivor, often go unaddressed. This is an area of clinical care and research that has received increasing attention, highlighted by the presentation of this special issue on Cancer and Sexual Health. The aims of this review are 3-fold. First, we seek to overview common presentations of sexual dysfunction related to major cancer diagnoses in order to give the PCP a sense of the medical issues that the survivor may present with. Barriers to communication about sexual health issues between patient/PCPs in order are also described in order to emphasize the importance of PCPs initiating this important conversation. Next, we provide strategies and resources to help guide the PCP in the management of sexual dysfunction in cancer survivors. Finally, we discuss case examples of survivorship sexual health issues and highlight the role that a PCP can play in each of these case examples.  相似文献   
84.
85.
86.
87.
Platelet function has been described by many laboratory assays, and PL-11 is a new point-of-care platelet function analyzer based on platelet count drop method, which counts platelet before and after the addition of agonists in the citrated whole blood samples. The present study sought to compare PL-11 with other three major more established assays, light transmission aggregometry (LTA), VerifyNow? aspirin system and thromboelastography (TEG), for monitoring the short-term aspirin responses in healthy individuals. Ten healthy young men took 100?mg/d aspirin for 3-day treatment. Platelet function was measured via PL-11, LTA, VerifyNow and TEG, respectively. The blood samples were collected at baseline, 2 hour, 1 day during the aspirin treatment and 1 day, 5?±?1 days, 8?±?1 days after the aspirin withdrawal. Moreover, 90 additional healthy subjects were recruited to establish a reference range for PL-11. Platelet function of healthy subjects decreased significantly 2 hours after 100?mg/d aspirin intake and began to recover during 4–6 days after the aspirin withdrawal. Correlations between methods were PL-11 vs. LTA (r?=?0.614, p?<?0.01); PL-11 vs. VerifyNow (r?=?0.829, p?<?0.01); PL-11 vs. TEG (r?=?0.697, p?<?0.001). There was no significant bias between PL-11 and LTA at baseline (bias?=?1.94%, p?=?0.804) using Bland-Altman analysis, while the data of PL-11 were significantly higher than LTA (bias?=?24.02%, p?<?0.001) during the aspirin therapy. The reference range for PL-11 in healthy young individuals was from 66.8 to 90.5% (95%CI). When aspirin low-responsiveness was defined as LTA?>?20%, the cut-off values for each method were, respectively: PL-11?>?50%, VerifyNow?>?533 ARU, TEG?>?60.2%. The results of different platelet function assays were uninterchangeable for monitoring aspirin response and correlations among them were also varied. Correlations among PL-11 and other three major assays suggested the ability of PL-11 to assess the treatment effects of aspirin. But a large cohort study is needed to confirm the cut-off value of aspirin response detected by PL-11.  相似文献   
88.
89.
骨碎补是历代临床常用中药,具有疗伤止痛、补肾强骨、消风祛斑等功效。其主要含黄酮、苯丙素、三萜、酚酸及其苷等类化学成分,现代研究表明骨碎补具有抗骨质疏松、促进骨折愈合、促软骨再生、护牙健齿、保护肾功能、抗炎、防治中毒性耳聋、降血脂等多种生物活性,开发前景广阔。本文对近年来骨碎补的化学成分、药理作用及临床应用研究进行综述,以期为骨碎补的进一步深入系统的研究和开发利用提供依据。  相似文献   
90.
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