全文获取类型
收费全文 | 9257篇 |
免费 | 531篇 |
国内免费 | 68篇 |
专业分类
耳鼻咽喉 | 44篇 |
儿科学 | 207篇 |
妇产科学 | 191篇 |
基础医学 | 973篇 |
口腔科学 | 176篇 |
临床医学 | 979篇 |
内科学 | 2172篇 |
皮肤病学 | 156篇 |
神经病学 | 501篇 |
特种医学 | 232篇 |
外国民族医学 | 1篇 |
外科学 | 1732篇 |
综合类 | 219篇 |
现状与发展 | 1篇 |
一般理论 | 5篇 |
预防医学 | 556篇 |
眼科学 | 157篇 |
药学 | 855篇 |
中国医学 | 161篇 |
肿瘤学 | 538篇 |
出版年
2024年 | 16篇 |
2023年 | 179篇 |
2022年 | 543篇 |
2021年 | 680篇 |
2020年 | 411篇 |
2019年 | 493篇 |
2018年 | 503篇 |
2017年 | 300篇 |
2016年 | 341篇 |
2015年 | 367篇 |
2014年 | 442篇 |
2013年 | 513篇 |
2012年 | 812篇 |
2011年 | 741篇 |
2010年 | 355篇 |
2009年 | 332篇 |
2008年 | 522篇 |
2007年 | 483篇 |
2006年 | 407篇 |
2005年 | 382篇 |
2004年 | 322篇 |
2003年 | 284篇 |
2002年 | 150篇 |
2001年 | 47篇 |
2000年 | 38篇 |
1999年 | 22篇 |
1998年 | 23篇 |
1997年 | 11篇 |
1996年 | 13篇 |
1995年 | 9篇 |
1994年 | 9篇 |
1993年 | 10篇 |
1992年 | 10篇 |
1991年 | 9篇 |
1990年 | 4篇 |
1989年 | 5篇 |
1988年 | 7篇 |
1987年 | 3篇 |
1985年 | 6篇 |
1984年 | 7篇 |
1983年 | 3篇 |
1982年 | 6篇 |
1981年 | 12篇 |
1980年 | 3篇 |
1978年 | 5篇 |
1977年 | 3篇 |
1976年 | 3篇 |
1975年 | 2篇 |
1972年 | 3篇 |
1969年 | 2篇 |
排序方式: 共有9856条查询结果,搜索用时 15 毫秒
1.
2.
3.
The records of 37 patients with liver injuries operated upon at the Ahmadu Bello University Teaching Hospital, Zaria, Nigeria from 1976 to 1987 were reviewed. There were 31 males and 6 females with a mean age of 22 years. Sixty-two per cent were due to blunt injury from road traffic accidents, 14 per cent were due to gunshot wounds and 5 per cent due to stab wounds as a result of assaults. Treatment with simple suture and drainage sufficed in 49 per cent; only 16 per cent required resection, packing and drainage. Associated injuries included long bone fractures and chest trauma. The most common complication was sepsis and the overall mortality was 19 per cent. 相似文献
4.
5.
Detecting pediatric autoimmune neuropsychiatric disorders associated with streptococcus in children with obsessive-compulsive disorder and tics. 总被引:6,自引:0,他引:6
Tanya K Murphy Muhammad Sajid Ohel Soto Nathan Shapira Paula Edge Mark Yang Mark H Lewis Wayne K Goodman 《Neuropsychopharmacology》2004,55(1):61-68
BACKGROUND: A subgroup of children with obsessive-compulsive and tic disorders are proposed to have an infectious trigger. The purpose of this study was to investigate the relationship between group A streptococcal titers and symptom fluctuations in children with a clinical course resembling that described for pediatric autoimmune neuropsychiatric disorders associated with streptococcus. METHODS: Twenty-five children with obsessive-compulsive disorder and/or tic disorder were evaluated for neuropsychiatric severity and group A streptococcal antibody titers (streptolysin O, deoxyribonuclease B, and carbohydrate A) at 6-week intervals for > or = six consecutive evaluations (total visits=277). RESULTS: Children with large symptom fluctuations (n=15) were compared with children without dramatic fluctuations (n=10). Co-movements of obsessive-compulsive/tic severity and group A streptococcal antibodies were assessed. In subjects with large symptom changes, positive correlations were found between streptococcal titers and obsessive-compulsive severity rating changes (p=.0130). These subjects were also more likely to have elevated group A streptococcal titers during the majority of observations (p=.001). Tic symptom exacerbations occurred more often in the fall/winter months than spring/summer months (p=.03). CONCLUSIONS: Patients with marked obsessive-compulsive/tic symptom changes may be characterized by streptococcal titer elevations and exhibit evidence of seasonal tic exacerbations. 相似文献
6.
7.
Mark T. DeMeo M.D Sohrab Mobarhan M.D Ms. Susan Mikolaitis R.D. C.N.S.D Dr. Nadeem Kazi M.D 《Nutrition reviews》1997,55(8):297-302
The effect of weight loss with anorectic medications on sleep apnea, non-insulin-dependent diabetes, and steatohepatitis is illustrated in three cases from practice in a clinical nutrition setting. Prevention of obesity, a chronic disorder, is preferable, but when obesity becomes a major obstacle in the care of patients with respiratory, cardiovascular, and metabolic disorders and osteoarthritis, an intense course of weight reduction using anorectic medications under medical and dietetic guidance is essential for patients' survival and reduction of medical cost. 相似文献
8.
Delineating the sites and progression of in vivo atrophy in multiple system atrophy using fluid-registered MRI. 总被引:1,自引:0,他引:1
Jonathan M Schott Jessica E Simon Nick C Fox Andrew P King M Nadeem Khan Lisa Cipolotti Dominic C Paviour John M Stevens Martin N Rossor 《Movement disorders》2003,18(8):955-958
We describe the pattern and progression of atrophy delineated using fluid registration of serial magnetic resonance imaging scans in a case of multiple system atrophy (MSA). The in vivo findings were consistent with those found at postmortem, including significant supratentorial atrophy concurrent with an unusual degree of cognitive impairment for MSA. 相似文献
9.
Muhammad Akram Randhawa 《Nippon Ishinkin Gakkai Zasshi》2006,47(4):313-318
Dimethyl sulfoxide(DMSO) is frequently used as a solvent for antifungal drugs in various studies to determine their MICs. Reports on comparative evaluation of methods for the susceptibility testing of antifungal drugs have shown there is poor agreement among methods. Besides other factors which could cause variability in the results, one important factor might be the effect of DMSO on the growth of fungi. The effect of DMSO on the growth of some species of Candida has been reported in the literature. The present study aimed at determination of the effect of different concentrations of DMSO (0.125 to 10%) on the growth of dermatophytes by agar diffusion method. There was no growth of fungi in 10% DMSO, between 1.25 and 5% there was a rather linear dose-related inhibitory effect on the growth, significantly different from the controls, and below 1% there was a variable effect among the species. DMSO down to 0.25% significantly inhibited the growth of most strains of M. canis. The lower concentrations of DMSO, which apparently do not affect the growth of fungi, may potentiate the effect of antifungal drugs. 相似文献
10.