全文获取类型
收费全文 | 2729篇 |
免费 | 178篇 |
国内免费 | 6篇 |
专业分类
耳鼻咽喉 | 37篇 |
儿科学 | 76篇 |
妇产科学 | 42篇 |
基础医学 | 290篇 |
口腔科学 | 141篇 |
临床医学 | 293篇 |
内科学 | 440篇 |
皮肤病学 | 175篇 |
神经病学 | 173篇 |
特种医学 | 240篇 |
外科学 | 274篇 |
综合类 | 109篇 |
一般理论 | 1篇 |
预防医学 | 237篇 |
眼科学 | 35篇 |
药学 | 150篇 |
中国医学 | 29篇 |
肿瘤学 | 171篇 |
出版年
2019年 | 22篇 |
2018年 | 41篇 |
2017年 | 31篇 |
2016年 | 28篇 |
2015年 | 44篇 |
2014年 | 60篇 |
2013年 | 111篇 |
2012年 | 116篇 |
2011年 | 123篇 |
2010年 | 73篇 |
2009年 | 72篇 |
2008年 | 90篇 |
2007年 | 113篇 |
2006年 | 81篇 |
2005年 | 77篇 |
2004年 | 58篇 |
2003年 | 51篇 |
2002年 | 53篇 |
2001年 | 67篇 |
2000年 | 67篇 |
1999年 | 74篇 |
1998年 | 75篇 |
1997年 | 68篇 |
1996年 | 49篇 |
1995年 | 43篇 |
1994年 | 44篇 |
1993年 | 40篇 |
1992年 | 60篇 |
1991年 | 60篇 |
1990年 | 65篇 |
1989年 | 64篇 |
1988年 | 54篇 |
1987年 | 78篇 |
1986年 | 62篇 |
1985年 | 61篇 |
1984年 | 43篇 |
1983年 | 35篇 |
1981年 | 23篇 |
1980年 | 25篇 |
1979年 | 22篇 |
1978年 | 22篇 |
1977年 | 20篇 |
1976年 | 29篇 |
1974年 | 23篇 |
1973年 | 24篇 |
1972年 | 19篇 |
1971年 | 20篇 |
1970年 | 20篇 |
1913年 | 30篇 |
1912年 | 25篇 |
排序方式: 共有2913条查询结果,搜索用时 13 毫秒
41.
42.
Alfred Roth Fritz Juliusberg Alfred Kraus Harald Boas Edgar Braendle Max Joseph Viktor Bandler Alfred Jungmann Theodor Baer A. Glück V. Lion F. Lewandowsky Theodor Schwab Ludwig Zweig J. Ullmann 《Archives of dermatological research》1913,115(9):1109-1134
Ohne Zusammenfassung 相似文献
43.
Weiler Viktor Bandler Theodor Schwab Fritz Juliusberg Theodor Baer 《Archives of dermatological research》1913,117(6):554-558
Ohne Zusammenfassung 相似文献
44.
J. H. Schultz Alfred Kraus Baer F. Lewandowsky R. Volk Paula Schultz-Bascho Fritz Juliusberg F. Lewandowsky M. Oppenheim Ludwig Zweig V. Lion Harald Boas 《Archives of dermatological research》1912,112(6):760-775
Ohne Zusammenfassung 相似文献
45.
Wilhelm Balban Oskar Müller M. Oppenheim Max Joseph Fritz Juliusberg P. A. Welikanow Richard Fischel Max Winkler Loewenhardt H. Merz Hochne Theodor Baer V. Lion Heimann Ludwig Zweig Max Leibkind Wilhelm Bartsch 《Archives of dermatological research》1911,105(1-2):352-364
Ohne Zusammenfassung 相似文献
46.
A. Gassmann H. G. Klotz Viktor Bandler M. Winkler Oskar Müller Theodor Baer H. Hübner Fritz Juliusberg Fritz Porges 《Archives of dermatological research》1908,89(2):298-316
Ohne Zusammenfassung 相似文献
47.
48.
Acute otomastoiditis and its complications: role of CT 总被引:2,自引:0,他引:2
Acute bacterial (suppurative) otomastoiditis responds to antibiotic treatment; radiologic study is required only when there is clinical suggestion of coalescent mastoiditis, intracranial complications, or an underlying chronic disease. Computed tomography (CT) is the method of choice for evaluating otogenic intra- or extra-cranial complications. CT scans can show stages of disease progression when infection has spread by way of soft tissue, blood, and bone pathways into the dural venous sinuses, meninges, labyrinth, facial nerves, epidural and other intracranial spaces. When there is clinical suggestion of acute coalescent mastoiditis, a CT scan of the temporal bone can confirm the presence of rarefying osteitis, coalescence of the air cells, and subperiosteal abscess. 相似文献
49.
The purpose of this study was to evaluate the effects of bleached kraft mill effluent on selected physiological and hematological endpoints in fingerling largemouth bass (Micropterus salmoides). Fish were exposed for 35 days to surface water collected at sites up- and downstream from a pulp and paper mill treatment-effluent discharge. The condition factor, spleen somatic index, and pronephros cellularity were statistically significantly decreased in fish exposed to the downstream site, compared to the upstream site. There was also a shift from lymphocytes to neutrophils in peripheral blood of fish exposed to the downstream site. Hematocrit values and the liver somatic index were statistically significantly increased in fish in the downstream exposure. These results indicate that in-stream exposure to elemental-chlorine-free pulp and paper mill effluents produce a generalized stress response, leading to potential immunosuppression in fish. 相似文献
50.
PURPOSE: Neuropeptide Y (NPY) has been shown to modulate seizure activities. To provide further understanding of the involvement of two of the most abundantly expressed NPY receptors, Y1 and Y2, we assessed the effect of Y1 and Y2 gene deletion on systemic kainic acid-induced seizures. We also examined the effect of rAAV-mediated hippocampal NPY overexpression on seizure susceptibility in these receptor knockout mice. METHODS: Recombinant adeno-associated viral vector overexpressing NPY (rAAV-NPY) or an empty vector control (rAAV-Empty) was injected into the hippocampus of adult C57BL/6-129/SvJ wild-type male mice and mice deficient of Y1 or Y2 receptors on the same background. Four weeks after vector injection, mice were subjected to systemic kainic acid-induced seizures, and the seizure behaviors were scored. RESULTS: The rAAV-mediated hippocampal overexpression of NPY led to a twofold reduction in seizures induced by systemic kainic acid in wild-type mice and Y1 receptor knockout mice but not in mice deficient of Y2 receptors. A differential action by the receptors was observed in the seizure-induced mortality rate, with increased fatality in Y2-/- mice. In addition, although NPY overexpression did not significantly affect the mortality rate in Y2-/- and wild-type mice, it abolished KA-induced mortality in Y1-/-mice. CONCLUSIONS: This study shows for the first time an altered susceptibility to chemically induced seizures in Y1 and Y2 knockout mice and demonstrates a differential seizure modulation mediated by these receptors via a genetic approach. 相似文献