全文获取类型
收费全文 | 906篇 |
免费 | 20篇 |
国内免费 | 3篇 |
专业分类
耳鼻咽喉 | 6篇 |
儿科学 | 20篇 |
妇产科学 | 9篇 |
基础医学 | 204篇 |
口腔科学 | 30篇 |
临床医学 | 131篇 |
内科学 | 185篇 |
皮肤病学 | 16篇 |
神经病学 | 17篇 |
特种医学 | 43篇 |
外科学 | 62篇 |
综合类 | 9篇 |
预防医学 | 64篇 |
眼科学 | 16篇 |
药学 | 61篇 |
肿瘤学 | 56篇 |
出版年
2020年 | 10篇 |
2019年 | 8篇 |
2018年 | 14篇 |
2016年 | 14篇 |
2015年 | 10篇 |
2014年 | 12篇 |
2013年 | 22篇 |
2012年 | 12篇 |
2011年 | 20篇 |
2010年 | 21篇 |
2009年 | 25篇 |
2008年 | 25篇 |
2007年 | 38篇 |
2006年 | 23篇 |
2005年 | 22篇 |
2004年 | 34篇 |
2003年 | 21篇 |
2002年 | 11篇 |
2001年 | 15篇 |
2000年 | 17篇 |
1999年 | 18篇 |
1998年 | 14篇 |
1997年 | 13篇 |
1996年 | 13篇 |
1995年 | 11篇 |
1992年 | 15篇 |
1991年 | 38篇 |
1990年 | 20篇 |
1989年 | 26篇 |
1988年 | 21篇 |
1987年 | 21篇 |
1986年 | 21篇 |
1985年 | 18篇 |
1984年 | 17篇 |
1983年 | 14篇 |
1981年 | 8篇 |
1979年 | 13篇 |
1978年 | 14篇 |
1976年 | 14篇 |
1975年 | 20篇 |
1974年 | 22篇 |
1973年 | 23篇 |
1972年 | 19篇 |
1971年 | 16篇 |
1970年 | 14篇 |
1969年 | 13篇 |
1968年 | 8篇 |
1967年 | 17篇 |
1966年 | 14篇 |
1965年 | 10篇 |
排序方式: 共有929条查询结果,搜索用时 0 毫秒
1.
2.
3.
T S Gur'eva O A Dadasheva V V Tsetlin E I Mednikova Z N Lebedeva 《Aviakosmicheskaia i ekologicheskaia meditsina》2007,41(1):20-24
Experiments on Japanese quail embryogenesis on a background of chronic exposure to gamma- and neutron doses comparable with the doses of ionized radiation inside the orbital space stations Mir and ISS, and exploration vehicles gave evidence that permanent absorption of low gamma-doses (0,15 cgy/d) did not impact development of the Japanese quail embryos. On the contrary, the neutron dose of 200 microgy/d imparted by the neutron flux of 30 particles/cm2s was hazardous to embryos as it caused morphological disorders in 12% of embryos. 相似文献
4.
A V Kostiukovskaia N V Lebedeva S V Slivko-Kol'chik 《Gigiena truda i professional'nye zabolevaniia》1991,(11):3-6
The article is concerned with a study of the mortality rates among the workers engaged at a tire-producing plant, for the 1950-1979 period. In comparison with the control population group, the contributors revealed increased mortality rates caused by cardiovascular diseases, malignant neoplasms, accidents, intoxications and traumas. Analysis of the labour conditions proved the influence of the unfavourable occupational factors on the mortality rates and mortality causes, excepting the indices of mortality caused by accidents, intoxications and traumas. 相似文献
5.
6.
7.
Caporale CM Capasso M Lucani M Gandolfi P De Angelis MV Di Muzio A Caporale V Uncini A . 《Journal of the peripheral nervous system : JPNS》2004,9(2):114-115
Campylobacter jejuni (C. jejunj) infection is the most common antecedent in the axonal variant of Guillain‐Barré syndrome (GBS). Antibodies against nerve gangliosides found in GBS patients recognize cross‐reactive epitopes in the lipopolysaccharide (LPS) of C. jejuni. This led to the molecular mimicry hypothesis of GBS. We immunized eleven rabbits with a LPS extracted from HS:19 C. jejuni strain isolated from a patient with GBS and complete Freund's adjuvant (CFA)(group I). In a second experiment we immunized seven rabbits with LPS, CFA and keyhole limpet hemocyanin (KLH)(group II). All group I rabbits developed high titers of anti‐LPS, anti‐GM1, anti‐GD1b antibodies and lower titers of anti‐GD1a. One rabbit, 50 days after initial inoculation, showed tremor and weakness. All rabbits of group II developed high titres of antiganglioside antibodies and six animals showed weakness 59–113 days after initial inoculation. Two rabbits died. Pathology showed mild to moderate, tendentially grouped, axonal degeneration in sciatic nerves of four out of five animals. Control rabbits of group I (immunized with CFA only) did not develop antibodies, controls of group II (immunized with CFA + KLH) developed low titers of IgG anti‐GM1. None developed neurological signs or showed axonal degeneration. C. jejuni LPS is a potent B‐cell stimulator capable to induce a strong antiganglioside response in rabbits. However, to induce the neuropathy is crucial to employ KLH, a glycoprotein known to stimulate both humoral and cellular responses. This animal model reproduces the pathogenetic process hypothesized in axonal GBS with antiganglioside antibodies post C. jejuni infection. 相似文献
8.
9.
49 patients with initial stages of essential hypertension (EH) were investigated using phase systole analysis and echocardiography during acupuncture (reflexotherapy) treatment. It was established that even at the initial stages of EH increasing of myocardial mass and the disturbances of contractile and diastolic activity of myocardium take place. As a result of acupuncture a stable hypotensive effect, improvement or normalization of contractile function and diastolic values, a decrease of energy loss, reversal of myocardial hypertrophy were achieved. It is the decrease of sympathetic influences on the circulation system that plays an important part in the onset of these positive changes. 相似文献
10.