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   158856篇
  免费   31269篇
  国内免费   2503篇
耳鼻咽喉   5198篇
儿科学   5550篇
妇产科学   2660篇
基础医学   3951篇
口腔科学   1591篇
临床医学   27178篇
内科学   49241篇
皮肤病学   7639篇
神经病学   15508篇
特种医学   6692篇
外科学   42409篇
综合类   250篇
现状与发展   72篇
一般理论   1篇
预防医学   7236篇
眼科学   3447篇
药学   1459篇
中国医学   33篇
肿瘤学   12513篇
  2024年   698篇
  2023年   4840篇
  2022年   1392篇
  2021年   3308篇
  2020年   6156篇
  2019年   2320篇
  2018年   7598篇
  2017年   7469篇
  2016年   8602篇
  2015年   8660篇
  2014年   15801篇
  2013年   16037篇
  2012年   6150篇
  2011年   6104篇
  2010年   10756篇
  2009年   14548篇
  2008年   6338篇
  2007年   4570篇
  2006年   6971篇
  2005年   4253篇
  2004年   3490篇
  2003年   2358篇
  2002年   2429篇
  2001年   3811篇
  2000年   3019篇
  1999年   3228篇
  1998年   3715篇
  1997年   3501篇
  1996年   3401篇
  1995年   3253篇
  1994年   1989篇
  1993年   1592篇
  1992年   1403篇
  1991年   1433篇
  1990年   1078篇
  1989年   1184篇
  1988年   1026篇
  1987年   860篇
  1986年   893篇
  1985年   721篇
  1984年   564篇
  1983年   535篇
  1982年   522篇
  1981年   406篇
  1980年   369篇
  1979年   312篇
  1978年   336篇
  1977年   402篇
  1975年   281篇
  1972年   303篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
91.
92.
This review discusses treatment options for men with premature ejaculation (PE), a common sexual dysfunction characterized by short ejaculatory latency, decreased sexual satisfaction, and distress. For a number of reasons, including embarrassment and the belief that PE is a normal part of aging, that it has no effective treatment, or that it will resolve itself, few men with PE seek treatment. Although several treatment options exist (eg, behavioral, cognitive, and sex therapy methods; desensitizing drugs; off-label use of antidepressants, phosphodiesterase type 5 inhibitors, or à-blockers), the majority of men with PE are not satisfied with their results. New pharmacologic drugs develped specifically for the treatment of PE are undergoing evaluation in clinical trials. For example, recent clinical research studies have revealed on-demand administration of one such drug, dapoxetine, which achieved significant improvements in ejaculatory latency, control over ejaculation, and satisfaction with sexual intercourse. In addition, partners of men who received dapoxetine likewise reported improved satisfaction with sexual intercourse. Future studies may reveal that integration of pharmacologic drugs with psychologic and/or behavioral therapy techniques may be the optimal approach to the management of PE. PE is a treatable condition, and new drugs in development may provide benefits over those available.  相似文献   
93.
94.
95.
Editorial     
  相似文献   
96.
97.
Prostatitis and male infertility are frequent disorders, and the role of prostatitis in male infertility has been under discussion for more than 30 years. Many researchers have shown relevant links between the two. Although a causal relationship has not been definitely demonstrated, increasing evidence shows that chronic prostatitis has a relevant negative impact on male fertility potential, at least in certain subgroups. In the following review, we focus on the present state of knowledge on the role of chronic prostatitis as an etiologic factor in male infertility.  相似文献   
98.
Medical therapy is currently the most popular treatment choice for lower urinary tract symptoms (LUTS) associated with benign prostatic hyperplasia (BPH). Because medical therapy of BPH-related LUTS is considered a life-long strategy, short- and long-term cost considerations should play a major role in therapeutic decision-making. The effectiveness in terms of long and short amelioration of symptoms, flow rate, and quality of life are well documented for 5α-blockers and 5α-reductase inhibitors as well as for the gold standard treatment for BPH, transurethral resection of the prostate and minimally invasive therapies. Short-and long-term safety concerns also are well documented for these various treatment options. On the contrary, short- and long-term costs have been less well studied and comparisons depend on the model or analyses undertaken in the few studies available. However, the economic studies based on prospective clinical trial data that have become available throughout the past several decades allow us to rationalize our use of α-blockers, 5α -reductase inhibitors, and combination therapy, taking into consideration age, severity of symptoms, prostate volume, prostate-specific antigen, and the differential response of the various medications (and combination) in selected patients. Based on current studies, 5α -blockers generally provide cost-effective therapy for most patients, whereas 5α-reductase therapy and combination therapy provide cost-effective treatment for patients with larger prostate glands or higher baseline prostate-specific antigen levels.  相似文献   
99.
Previous observational research confirms abundant variation in primary care practice. While variation is sometimes viewed as problematic, its presence may also be highly informative in uncovering ways to enhance health care delivery when it represents unique adaptations to the values and needs of people within the practice and interactions with the local community and health care system. We describe a theoretical perspective for use in developing interventions to improve care that acknowledges the uniqueness of primary care practices and encourages flexibility in the form of intervention implementation, while maintaining fidelity to its essential functions.  相似文献   
100.
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