全文获取类型
收费全文 | 10594篇 |
免费 | 321篇 |
国内免费 | 28篇 |
专业分类
耳鼻咽喉 | 148篇 |
儿科学 | 157篇 |
妇产科学 | 282篇 |
基础医学 | 2094篇 |
口腔科学 | 220篇 |
临床医学 | 521篇 |
内科学 | 963篇 |
皮肤病学 | 400篇 |
神经病学 | 825篇 |
特种医学 | 1601篇 |
外科学 | 1419篇 |
综合类 | 41篇 |
预防医学 | 751篇 |
眼科学 | 85篇 |
药学 | 1061篇 |
中国医学 | 90篇 |
肿瘤学 | 285篇 |
出版年
2023年 | 35篇 |
2022年 | 20篇 |
2021年 | 45篇 |
2020年 | 41篇 |
2019年 | 60篇 |
2018年 | 188篇 |
2017年 | 129篇 |
2016年 | 173篇 |
2015年 | 113篇 |
2014年 | 212篇 |
2013年 | 359篇 |
2012年 | 682篇 |
2011年 | 1029篇 |
2010年 | 454篇 |
2009年 | 152篇 |
2008年 | 748篇 |
2007年 | 913篇 |
2006年 | 886篇 |
2005年 | 714篇 |
2004年 | 637篇 |
2003年 | 643篇 |
2002年 | 552篇 |
2001年 | 367篇 |
2000年 | 480篇 |
1999年 | 264篇 |
1998年 | 74篇 |
1997年 | 47篇 |
1996年 | 33篇 |
1995年 | 44篇 |
1994年 | 23篇 |
1992年 | 24篇 |
1991年 | 29篇 |
1990年 | 38篇 |
1989年 | 28篇 |
1988年 | 31篇 |
1986年 | 27篇 |
1985年 | 33篇 |
1984年 | 20篇 |
1983年 | 23篇 |
1982年 | 33篇 |
1981年 | 29篇 |
1980年 | 29篇 |
1979年 | 29篇 |
1978年 | 28篇 |
1976年 | 19篇 |
1975年 | 32篇 |
1974年 | 21篇 |
1973年 | 23篇 |
1971年 | 19篇 |
1963年 | 19篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
21.
22.
23.
Vukić Z 《Croatian medical journal》2001,42(5):569-571
Left Bochdalek hernia is a serious and complex condition with high mortality. In most cases, it presents in the neonatal period and is seldom found later in life when symptomatology, usually after an asymptomatic period, is quite different and the prognosis excellent. The embryological development of left Bochdalek hernia suggests the presence of abdominal content in the left pleural cavity before birth. The type of clinical presentation and the prognosis depend on the time of visceral herniation. This study presents two cases of left Bochdalek hernia with delayed presentation. In both cases, after surgical reposition of the hernia, a small congenital diaphragmatic defect was found hidden between the rims of diaphragm. This indicates the possibility for the abdominal content to enter the left pleural cavity at the time of presentation. 相似文献
24.
Variation of the photoactivation rate across radiation fields of three different bremsstrahlung beams of two medical accelerators has been measured, making use of the photonuclear reactions in natural indium probes: 115In(y,y')115mIn and 115In(y,n)114mIn. The third nuclear reaction, 115In(n,y)116mIn, was used to detect the presence of neutrons in the photon beam and to estimate the spatial distribution of thermal and fast neutrons in the patient plane as a function of collimator opening. 相似文献
25.
26.
27.
28.
Anatomical variations in the dimensions of different brain structures have been correlated with clinical syndromes. This study on the parameters of normal and abnormal cavum septi pellucidi (CSP) can be of clinical significance. We obtained 479 brains from autopsied persons (310 males and 169 females, 377 normal or asymptomatic and 102 abnormal or symptomatic persons, aged 22-89 years) and observed that 110 brains (75 males and 35 females) had CSP. These cava were classified into two groups depending on the past medical histories of the autopsied person: 40 asymptomatic and 70 symptomatic cava. We have defined symptomatic cava as those in autopsied persons who had known past medical history of psychiatric or neurological disease. Asymptomatic cava were in autopsied persons who had no known past medical history of psychiatric or neurological disease. The CSP parameters (length, width, depth) of the symptomatic and asymptomatic groups were measured and were statistically analyzed. Analysis showed that the cava in the symptomatic group were significantly longer and wider. Discriminant function analysis was used to derive a mathematical formula to classify CSP into an asymptomatic or symptomatic group based on length and width measurements of the cavum. 相似文献
29.
30.