全文获取类型
收费全文 | 7372篇 |
免费 | 761篇 |
国内免费 | 7篇 |
专业分类
耳鼻咽喉 | 91篇 |
儿科学 | 244篇 |
妇产科学 | 258篇 |
基础医学 | 912篇 |
口腔科学 | 128篇 |
临床医学 | 891篇 |
内科学 | 1321篇 |
皮肤病学 | 139篇 |
神经病学 | 761篇 |
特种医学 | 323篇 |
外国民族医学 | 1篇 |
外科学 | 1058篇 |
综合类 | 145篇 |
一般理论 | 9篇 |
预防医学 | 693篇 |
眼科学 | 128篇 |
药学 | 632篇 |
中国医学 | 5篇 |
肿瘤学 | 401篇 |
出版年
2021年 | 113篇 |
2020年 | 66篇 |
2019年 | 137篇 |
2018年 | 123篇 |
2017年 | 97篇 |
2016年 | 105篇 |
2015年 | 116篇 |
2014年 | 166篇 |
2013年 | 235篇 |
2012年 | 344篇 |
2011年 | 350篇 |
2010年 | 177篇 |
2009年 | 185篇 |
2008年 | 351篇 |
2007年 | 311篇 |
2006年 | 303篇 |
2005年 | 330篇 |
2004年 | 299篇 |
2003年 | 266篇 |
2002年 | 267篇 |
2001年 | 217篇 |
2000年 | 237篇 |
1999年 | 203篇 |
1998年 | 104篇 |
1997年 | 82篇 |
1996年 | 67篇 |
1995年 | 71篇 |
1994年 | 63篇 |
1993年 | 70篇 |
1992年 | 169篇 |
1991年 | 172篇 |
1990年 | 127篇 |
1989年 | 142篇 |
1988年 | 152篇 |
1987年 | 134篇 |
1986年 | 130篇 |
1985年 | 138篇 |
1984年 | 116篇 |
1983年 | 94篇 |
1982年 | 74篇 |
1981年 | 78篇 |
1980年 | 54篇 |
1979年 | 86篇 |
1978年 | 76篇 |
1977年 | 70篇 |
1974年 | 59篇 |
1973年 | 59篇 |
1972年 | 63篇 |
1971年 | 61篇 |
1970年 | 56篇 |
排序方式: 共有8140条查询结果,搜索用时 31 毫秒
1.
2.
3.
4.
5.
6.
7.
A new technique for assessing the efferent innervation of the human striated urethral sphincter 总被引:4,自引:0,他引:4
A technique is described for recording the electromyographic response of the striated urethral sphincter to transcutaneous magnetic stimulation of the brain and spinal cord. A series of 11 control patients have been studied and 3 examples of patients with neurological disease also are reported. The most reliable response was recorded after facilitated transcranial stimulation of the cerebral cortex, with the mean latency of the electromyographic response in the striated sphincter being 26.4 msec. (standard deviation 2.21). It is concluded that assessment of the latency of the striated urethral sphincter electromyographic response to transcranial magnetic stimulation may be a useful technique in the investigation of patients with disorders of micturition. 相似文献
8.
Gordon J. Harris Ph.D. Instructor Jonathan M. Links Ph.D. Associate Professor Godfrey D. Pearlson M.B. B.S. Director Edwaldo E. Camargo M.D. Associate Professor 《Psychiatry research》1991,40(3):167-180
We developed a semiautomatic method termed “cortical circumferential profiling” for objective analysis of cerebral cortex function in emission tomographic neuroimaging studies. This method treats cortex as a continuous ring near the outer brain edge. A computer algorithm samples the cortex at 60 contiguous, equiangular locations, using 1-cm2 samples. These values are plotted as a function of cortical angle to produce the cortical circumferential profile. This method was used in a study of regional cerebral perfusion in 15 patients with Alzheimer's disease and 8 elderly control subjects using N-isopropyl [I-123]-iodoamphetamine. Cortical circumferential profiling decreases variability, examines the entire cortex within slices at preselected levels above the orbital-meatal line, and facilitates intrasubject and intersubject comparisons. 相似文献
9.
BACKGROUND: Microepidemics of tuberculosis continue to occur in countries with a low incidence of tuberculosis. METHODS AND RESULTS: A microepidemic of tuberculosis in a secondary school with 604 girls in Cork city, Ireland, in 1986 with follow up to 1990 is described. Neonatal BCG vaccination was discontinued in the city in December 1972 so most of the 342 pupils who had received BCG were aged 14 years or more. Six active cases and 75 tuberculin positive cases were found. Four of the six girls with active disease had had neonatal BCG. The 75 pupils with a positive (grade 3 or 4) Heaf test response were given chemoprophylaxis with rifampicin and isoniazid for six months; none had developed active tuberculosis four years later. The brother of the girl who was the probable index case, however, developed active tuberculosis in 1988 despite similar chemoprophylaxis. CONCLUSION: The episode highlights the fact that children who have had neonatal BCG can develop active tuberculosis as teenagers. 相似文献
10.
Susan B Fowler Michael Moussouttas Barbara Mancini 《The Journal of neuroscience nursing》2005,37(4):220-223
Metabolic syndrome is associated with increased risk for cardiovascular and cerebrovascular disease. The World Health Organization and National Cholesterol Education Program Adult Treatment Panel III have identified physiologic abnormalities associated with metabolic syndrome, including impaired glucose metabolism, high blood pressure, elevated cholesterol levels, and abdominal obesity. It is estimated that 47 million Americans have metabolic syndrome. A variety of therapies may help reduce the incidence and risk, including diet, weight loss, physical exercise, glycemic control, and pharmacological treatments. Nursing care is focused on developing an individualized plan of care that includes family members and providing education, psychosocial support, close monitoring, and continued follow-up to ensure adherence and success in achieving patient outcomes. 相似文献