全文获取类型
收费全文 | 157447篇 |
免费 | 31234篇 |
国内免费 | 2440篇 |
专业分类
耳鼻咽喉 | 5220篇 |
儿科学 | 5459篇 |
妇产科学 | 2460篇 |
基础医学 | 3900篇 |
口腔科学 | 1645篇 |
临床医学 | 27123篇 |
内科学 | 49135篇 |
皮肤病学 | 7495篇 |
神经病学 | 15210篇 |
特种医学 | 6533篇 |
外科学 | 41911篇 |
综合类 | 254篇 |
现状与发展 | 72篇 |
预防医学 | 7124篇 |
眼科学 | 3466篇 |
药学 | 1570篇 |
中国医学 | 33篇 |
肿瘤学 | 12511篇 |
出版年
2024年 | 688篇 |
2023年 | 4802篇 |
2022年 | 1259篇 |
2021年 | 3188篇 |
2020年 | 6062篇 |
2019年 | 2233篇 |
2018年 | 7478篇 |
2017年 | 7402篇 |
2016年 | 8505篇 |
2015年 | 8530篇 |
2014年 | 15598篇 |
2013年 | 15726篇 |
2012年 | 5692篇 |
2011年 | 5813篇 |
2010年 | 10474篇 |
2009年 | 14382篇 |
2008年 | 6032篇 |
2007年 | 4324篇 |
2006年 | 6800篇 |
2005年 | 4119篇 |
2004年 | 3366篇 |
2003年 | 2358篇 |
2002年 | 2462篇 |
2001年 | 4025篇 |
2000年 | 3294篇 |
1999年 | 3418篇 |
1998年 | 3754篇 |
1997年 | 3534篇 |
1996年 | 3447篇 |
1995年 | 3272篇 |
1994年 | 2004篇 |
1993年 | 1623篇 |
1992年 | 1535篇 |
1991年 | 1562篇 |
1990年 | 1179篇 |
1989年 | 1333篇 |
1988年 | 1121篇 |
1987年 | 937篇 |
1986年 | 964篇 |
1985年 | 795篇 |
1984年 | 598篇 |
1983年 | 579篇 |
1982年 | 536篇 |
1981年 | 424篇 |
1980年 | 380篇 |
1979年 | 353篇 |
1978年 | 352篇 |
1977年 | 418篇 |
1975年 | 300篇 |
1972年 | 323篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
81.
82.
Eijiro Morita Torao Tanaka Tetsuya Nakamura Fumitaka Terabe Ichiro Hirata Kenichi Katsu Masakazu Takazoe Akira Terano 《Digestive endoscopy》2006,18(4):263-268
Background and Aims: Video capsule endoscopy (VCE) has become increasingly important as a simple method for observing the entire small intestine. The indications for VCE are obscure gastrointestinal bleeding and investigation of Crohn’s disease (CD). However, the correlation between endoscopic findings obtained by VCE and clinical findings in known cases of CD is not clear, and we therefore investigated this in the present study. Patients and methods: In 30 patients with known CD (Crohn’s disease activity index [CDAI] 0–420; median = 158.3), double contrast enteroclysis (ENT) was performed 1–3 weeks prior to VCE. The relationship between the VCE findings and hematological analysis/CDAI was examined. Results: In 17 of 30 patients, the entire small intestine could be investigated by VCE, whereas in the remaining 13 patients the terminal ileum could not be investigated. The following exhibited positive correlations: total lesions and CDAI (correlation coefficient values: rs = 0.661, adjusted P < 0.0061), ulcers and C‐reactive protein (CRP) (rs = 0.607, adjusted P < 0.0061), total lesions and CRP (rs = 0.604, adjusted P < 0.0061). Conclusions: Analysis with VCE suggests that CDAI and CRP indicate the activity of intestinal lesions in patients with known CD, and that CRP, in particular, is associated with the activity of ulcerative lesions of the intestine. This may contribute to revised guidelines for VCE in the future. 相似文献
84.
Although psychoanalysis was the first-choice treatment for premature ejaculation (PE) between 1920 and 1960, hardly any reports on its efficacy have been published. Moreover, a scientific debate about its findings has never been fully developed. The recent progress that has been made in the classification of three different PE syndromes creates a new opportunity for psychoanalytic investigations of men with complaints of PE, distinguished by the actual duration of their intravaginal ejaculation latency time (IELT). The term premature-like ejaculatory dysfunction has been introduced to distinguish men with self-perceived PE at normal and long IELT durations from those men with lifelong, acquired and normal variable PE. Psychoanalytic research may contribute to a better understanding of the consequences of objective early ejaculations on the unconscious mental life of men with the four forms of PE. By integrating neurobiological, clinical and epidemiological data of ejaculatory performance, a revival of psychoanalytic research of PE in the four distinct, classified PE groups, will probably contribute to a deeper insight in to the unconscious mental life of men affected by PE. 相似文献
85.
86.
Fibromyalgia is a syndrome of widespread pain, nonrestorative sleep, disturbed mood, and fatigue. Optimal treatment involves
a multidisciplinary approach with a team of health care providers using pharmacologic and nonpharmacologic treatment. Because
of the heterogeneity of the illness, management should be individualized for the patient. Pharmacologic treatment should address
issues of pain control, sleep disturbance, fatigue, and any underlying coexisting mood disorder. Nonpharmacologic treatment
should include patient education, a regular exercise and stretching program, and cognitive behavioral therapy. All of these
are essential to improving functional capacity and quality of life. This review provides general guidelines in initiating
a successful pharmacologic treatment program for patients with fibromyalgia. 相似文献
87.
88.
89.
Daisuke Kubota Chizuru Takishima Ken-ichi Ishii Takahiro Kawamura Tomoko Matsumoto Yasuhiro Itsui Eriko Okada Seishin Chin Shinya Oooka Kiichiro Tsuchiya Akihiro Araki Naoya Sakamoto Tatsuya Miyata Takanori Kanai Mamoru Watanabe 《Nihon Shokakibyo Gakkai zasshi》2006,103(9):1044-1049
A 23-year-old man was admitted for treatment of acute exacerbation of ileitis and perianal abscess caused by Crohn's disease. After incision and drainage of the abscess, coupled with antibiotic therapy, 6-mercaptopurine (6-MP) was commenced. His white blood cell (WBC) count on day 12 after initiation of 6-MP was not decreased. However, on day 24 he was re-admitted because of severe myelosuppression (WBC: 300/microl), which was complicated by the recurrence of the perianal abscess. Myelosuppression was prolonged and required the administration of granulocyte colony stimulating factor (G-CSF). G-CSF was continued for 17 days to achieve recovery of his WBC count to a normal level. 相似文献
90.