全文获取类型
收费全文 | 5354篇 |
免费 | 586篇 |
国内免费 | 20篇 |
专业分类
耳鼻咽喉 | 38篇 |
儿科学 | 119篇 |
妇产科学 | 92篇 |
基础医学 | 625篇 |
口腔科学 | 59篇 |
临床医学 | 603篇 |
内科学 | 1554篇 |
皮肤病学 | 183篇 |
神经病学 | 582篇 |
特种医学 | 305篇 |
外科学 | 627篇 |
综合类 | 69篇 |
一般理论 | 4篇 |
预防医学 | 371篇 |
眼科学 | 53篇 |
药学 | 347篇 |
中国医学 | 2篇 |
肿瘤学 | 327篇 |
出版年
2021年 | 54篇 |
2019年 | 79篇 |
2018年 | 89篇 |
2017年 | 62篇 |
2016年 | 70篇 |
2015年 | 92篇 |
2014年 | 118篇 |
2013年 | 152篇 |
2012年 | 239篇 |
2011年 | 227篇 |
2010年 | 149篇 |
2009年 | 146篇 |
2008年 | 228篇 |
2007年 | 281篇 |
2006年 | 266篇 |
2005年 | 267篇 |
2004年 | 202篇 |
2003年 | 220篇 |
2002年 | 201篇 |
2001年 | 198篇 |
2000年 | 193篇 |
1999年 | 152篇 |
1998年 | 69篇 |
1997年 | 80篇 |
1996年 | 101篇 |
1995年 | 62篇 |
1994年 | 78篇 |
1993年 | 48篇 |
1992年 | 106篇 |
1991年 | 131篇 |
1990年 | 124篇 |
1989年 | 109篇 |
1988年 | 105篇 |
1987年 | 125篇 |
1986年 | 89篇 |
1985年 | 106篇 |
1984年 | 68篇 |
1983年 | 50篇 |
1982年 | 54篇 |
1981年 | 38篇 |
1980年 | 39篇 |
1979年 | 49篇 |
1978年 | 36篇 |
1977年 | 43篇 |
1976年 | 36篇 |
1975年 | 42篇 |
1974年 | 47篇 |
1972年 | 42篇 |
1971年 | 41篇 |
1969年 | 46篇 |
排序方式: 共有5960条查询结果,搜索用时 15 毫秒
41.
J L Bonsall J E Squier C A Baron G Parker 《The Journal of the Society of Occupational Medicine》1991,41(4):176-180
A cross-sectional comparative study was carried out in two chemical manufacturing plants in order to ascertain the effect of an occupational physiotherapy service on absence attributed to sickness. There was no overall effect on total sickness absence rates in this study, but a possible reduction in short-term sickness absence was noted. Changes in management attitudes to absence attributed to sickness at the comparison site caused a significant reduction in short-term absences. It is concluded that physiotherapy in an occupational setting has little effect on sickness absence compared to management attitudes, but the unquantifiable benefits, such as increased employee mobility, better industrial relations and employee morale may be significant benefits, worthy of further study. 相似文献
42.
43.
44.
Variants of B cell lymphoma 6 (BCL6) and marked atopy 总被引:3,自引:0,他引:3
Chaker N Adra PS Gao XQ Mao Beverly W Baron S. Pauker T. Miki T. Shirakawa JM Hopkin 《Clinical genetics》1998,54(4):362-364
45.
J P Reynaud J L Baron M Penin F Chadoint 《Annales de chirurgie plastique et esthétique》1990,35(6):496-497
The authors present a very simple and very comfortable splinting device for use after rhinoplasty. It consists of a splint made from malleable plastic which can be moulded by soaking in water at 60 degrees C, allowing perfect modelling to the shape of the nose. This splint is held in place by means of Velcro bands which offer remarkable flexibility of use. 相似文献
46.
Nineteen survivors of congenital diaphragmatic hernia repair were compared with age and sex matched control children six to 11 years after repair. All subjects were examined clinically and underwent lung function testing. The patients also had individual lung volumes assessed radiographically and had radionuclide (krypton-81 m, technetium-99 m macroaggregates) ventilation-perfusion (V/Q) lung scans. Four patients had pectus excavatum and two had mild scoliosis. Spirometric measurements were lower in the patients than in the control subjects but only the differences in peak expiratory flow and flow at 50% of expired vital capacity were significant. The radiographic left lung volumes in patients surviving left diaphragmatic repair were larger than expected at 49.3% (SD 2%), suggesting alveolar overdistension. V/Q scans showed a mismatch in the ipsilateral lung, mean Q (40% (7%] being significantly lower than mean V (47% (6%)). In seven patients who had required ventilation for four days or more perfusion to the ipsilateral lung was significantly lower (34% (6%)) than values for the 12 patients ventilated for less than four days (43% (6%)). Survivors of right diaphragmatic repair had a better outcome in terms of relative radiographic lung volumes and V/Q distribution. More severely affected children are now surviving repair of congenital diaphragmatic herniation, with residual pulmonary abnormalities that could produce functional impairment in adult life. 相似文献
47.
48.
49.
50.