全文获取类型
收费全文 | 1461715篇 |
免费 | 106798篇 |
国内免费 | 2332篇 |
专业分类
耳鼻咽喉 | 20581篇 |
儿科学 | 49680篇 |
妇产科学 | 38843篇 |
基础医学 | 209044篇 |
口腔科学 | 38063篇 |
临床医学 | 126642篇 |
内科学 | 297182篇 |
皮肤病学 | 32674篇 |
神经病学 | 117153篇 |
特种医学 | 56557篇 |
外国民族医学 | 716篇 |
外科学 | 219153篇 |
综合类 | 27842篇 |
现状与发展 | 1篇 |
一般理论 | 430篇 |
预防医学 | 112360篇 |
眼科学 | 31343篇 |
药学 | 107994篇 |
2篇 | |
中国医学 | 2986篇 |
肿瘤学 | 81599篇 |
出版年
2021年 | 10810篇 |
2019年 | 12206篇 |
2018年 | 19114篇 |
2017年 | 13981篇 |
2016年 | 14941篇 |
2015年 | 16914篇 |
2014年 | 21908篇 |
2013年 | 33725篇 |
2012年 | 49412篇 |
2011年 | 51420篇 |
2010年 | 29268篇 |
2009年 | 26676篇 |
2008年 | 47988篇 |
2007年 | 51502篇 |
2006年 | 50605篇 |
2005年 | 49421篇 |
2004年 | 47832篇 |
2003年 | 45802篇 |
2002年 | 44563篇 |
2001年 | 67437篇 |
2000年 | 69987篇 |
1999年 | 59547篇 |
1998年 | 15770篇 |
1997年 | 14287篇 |
1996年 | 14699篇 |
1995年 | 13904篇 |
1994年 | 13181篇 |
1993年 | 12154篇 |
1992年 | 46578篇 |
1991年 | 45324篇 |
1990年 | 43946篇 |
1989年 | 41701篇 |
1988年 | 38439篇 |
1987年 | 37660篇 |
1986年 | 34959篇 |
1985年 | 33526篇 |
1984年 | 25086篇 |
1983年 | 21088篇 |
1982年 | 12222篇 |
1981年 | 11076篇 |
1979年 | 22194篇 |
1978年 | 15429篇 |
1977年 | 13088篇 |
1976年 | 12140篇 |
1975年 | 13223篇 |
1974年 | 15398篇 |
1973年 | 14861篇 |
1972年 | 13620篇 |
1971年 | 12368篇 |
1970年 | 11646篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
81.
82.
We report our experience of eight cases of isolated full thickness burns of the penis. Early excision of burns of the penile shaft and repair with a preputial flap or mesh split skin graft produces excellent results, with a reduction in complications and an early re-establishment of sexual function. Conservative treatment of burns of the glans, on the other hand, is appropriate and results in minimal scarring. 相似文献
83.
The use of additional epidural sympathetic block during and after microvascular surgery in the lower extremities to prevent vasospasm is generally agreed on. However, a significant fall in the perfusion rate of the transplants was seen after application of bupivacaine (Marcain) via the epidural catheter. This effect has, to our knowledge, not been described before and is probably caused by the sympathectomy effect of this type of analgesia. 相似文献
84.
Edward R. Westrick MS Allan P. Shapiro PhD Peter E. Nathan PhD John Brick PhD 《Alcoholism, clinical and experimental research》1988,12(4):531-533
The present study demonstrates that alcohol-induced memory impairment can be attenuated by pretreatment with an oral tryptophan supplementation. These results provide support for the role of a brain serotonin deficit in this impairment and highlight the impact a dietary manipulation can have on a complex behavioral process. 相似文献
85.
P. THOMPSON F. INGLIS D. FINDLAY J. GILCHRIST M. E. T. MCMURDO 《Aging & mental health》1997,1(2):181-183
The Dundee Memory Clinic was established in 1991. This paper reviews the diagnosis of the first 150 attenders and compares the findings with those of other memory clinics. 相似文献
86.
Macrophage NRAMP1 and its role in resistance to microbial infections 总被引:12,自引:0,他引:12
87.
88.
89.
J. P. Kuhtz-Buschbeck A. Boczek-Funcke M. Illert C. Weinhardt 《The European journal of neuroscience》1994,6(7):1187-1198
With pulsed X-ray cinematography we have analysed the angular excursions of the distal hindlimb joints (proximal interphalangeal, PIP; metatarsophalangeal, MTP; ankle) in cats walking on a treadmill. These distal joints transmit the body weight and the dynamic forces onto the ground. We have included the knee and hip joints in the analysis to relate the angular excursions of the proximal and distal joints and to verify the data previously obtained with external markers on the kinematics of the proximal joints. At the beginning of the stance phase the PIP joints flexed rapidly, the MTP joints extended slowly and the ankle and knee yielded under body weight. Whereas the PIP joints maintained a rather constant angular position of −75° throughout the stance phase, extension continued in the MTP joints from −230° at touch-down to −270° at the end of the stance phase. Around 50 ms before lift-off the MTP joints flexed rapidly. Early (−30 ms) after lift-off this flexion changed into a slow extension. The PIP joints extended swiftly at the stance-swing transition and moderately at the end of the swing phase. During the middle part of the swing phase they flexed slowly. Small rotatory movements around the long axis of the foot took place in the last 100 ms of the swing phase. The results of this study on the distal joints are discussed in relation to the placing of the paw, to the translation of forward propulsion into a MTP movement and to the lifting of the paw (conventionally described as toe curling). They show a differentiated mechanical interaction between the different distal limb joints during these different phases, which must be known in detail to interpret the corresponding electromyographic data and to understand how the hip is moved forward over the MTP joints which serve as the final pivot during stance. 相似文献
90.