全文获取类型
收费全文 | 2583篇 |
免费 | 229篇 |
国内免费 | 7篇 |
专业分类
耳鼻咽喉 | 25篇 |
儿科学 | 89篇 |
妇产科学 | 86篇 |
基础医学 | 428篇 |
口腔科学 | 44篇 |
临床医学 | 376篇 |
内科学 | 414篇 |
皮肤病学 | 31篇 |
神经病学 | 190篇 |
特种医学 | 275篇 |
外科学 | 231篇 |
综合类 | 33篇 |
一般理论 | 3篇 |
预防医学 | 182篇 |
眼科学 | 81篇 |
药学 | 247篇 |
中国医学 | 1篇 |
肿瘤学 | 83篇 |
出版年
2021年 | 29篇 |
2020年 | 20篇 |
2019年 | 32篇 |
2018年 | 33篇 |
2017年 | 23篇 |
2016年 | 30篇 |
2015年 | 34篇 |
2014年 | 48篇 |
2013年 | 76篇 |
2012年 | 97篇 |
2011年 | 113篇 |
2010年 | 64篇 |
2009年 | 52篇 |
2008年 | 92篇 |
2007年 | 104篇 |
2006年 | 113篇 |
2005年 | 101篇 |
2004年 | 86篇 |
2003年 | 95篇 |
2002年 | 67篇 |
2001年 | 75篇 |
2000年 | 71篇 |
1999年 | 64篇 |
1998年 | 56篇 |
1997年 | 58篇 |
1996年 | 55篇 |
1995年 | 54篇 |
1994年 | 38篇 |
1993年 | 51篇 |
1992年 | 63篇 |
1991年 | 64篇 |
1990年 | 61篇 |
1989年 | 63篇 |
1988年 | 72篇 |
1987年 | 72篇 |
1986年 | 51篇 |
1985年 | 60篇 |
1984年 | 33篇 |
1983年 | 35篇 |
1982年 | 47篇 |
1981年 | 26篇 |
1980年 | 31篇 |
1979年 | 33篇 |
1978年 | 22篇 |
1977年 | 27篇 |
1976年 | 30篇 |
1975年 | 22篇 |
1974年 | 22篇 |
1973年 | 21篇 |
1970年 | 22篇 |
排序方式: 共有2819条查询结果,搜索用时 15 毫秒
1.
Anna Grace Tribble Phillip Summers Haiying Chen Sara A. Quandt 《Archives of environmental & occupational health》2016,71(6):309-316
The jobs of Latino manual laborers place their mental and physical health at risk. This study evaluates the associations among musculoskeletal pain, mental health, and work organization in Latino manual laborers. Farmworkers and nonfarmworkers (n = 189) in North Carolina were interviewed for self-reported musculoskeletal pain, depressive symptoms, stress, work safety climate, and precarious job status. More nonfarmworkers than farmworkers had neck and shoulder pain, but they did not differ in other areas of musculoskeletal pain. Depressive symptoms had a significant association with neck and shoulder pain (p < .05). Precariousness had a significant association with back pain (p < .05). Farmworker participants had H-2A visas and were afforded some protection compared to nonfarmworker manual workers. Research is needed to improve policy that relieves pain and improves mental health for all Latino manual workers. 相似文献
2.
3.
4.
5.
B Gerdts AFPM Vloemans RW Kreis 《Journal of the European Academy of Dermatology and Venereology》2007,21(6):781-788
BACKGROUND: Toxic epidermal necrolysis (TEN) is a severe and potentially fatal drug reaction characterized by an extensive skin rash with blisters and exfoliation, frequently accompanied by mucositis. The wounds caused by TEN are similar to second-degree burns and severe cases may involve large areas of skin loss. OBJECTIVES: Analysis of our results in patients with TEN and evaluation of the variety of therapeutic interventions that has been studied and suggested in TEN. PATIENTS/METHODS: Retrospective analysis of 19 consecutive patients with TEN treated in our burns centre between 1989 and 2004. RESULTS: Immediate withdrawal of any potentially fatal drug, maximum supportive care, and a restricted and tailored antibiotic, medical and surgical treatment regimen confined mortality to 21%, whereas prognosis scores like APACHE II and SCORTEN predicted mortality of 22 and 30%, respectively. A positive contribution of selective digestive decontamination is suggested but has yet to be established. CONCLUSIONS: Because of a potentially fatal outcome, fast referral of a patient suspected of TEN to a specialized centre (mostly a burns unit or specialized dermatology centre) for expert wound management and tailored comprehensive care is strongly advised and contributes to survival. 相似文献
6.
The characteristics of [3H]-prazosin binding in renal cortical membranes of the rat have been assessed under a variety of buffer conditions. At 37 degrees, in Krebs' phosphate and Tris buffer, [3H]-prazosin bound to two sites, a small population of high affinity sites with properties of alpha1-adrenoceptors and a much larger population of low affinity sites with different characteristics. High affinity [3H]-prazosin binding was insensitive to Na+, K+, Ca2+ and Mg2+ ions, but low affinity [3H]-prazosin binding was markedly increased in Krebs' phosphate or sodium phosphate buffer and further enhanced in membranes pretreated with EGTA. Binding was decreased in the presence of Ca2+, the decrease in binding mainly being due to a decrease in the number of low affinity sites labelled by the ligand. Low affinity [3H]-prazosin binding was increased at 37 degrees and relatively insensitive to alpha-adrenoceptor antagonists which were weak competitors while catecholamines failed to compete for low affinity binding. Scatchard plots of [3H]-prazosin binding performed using (-)-noradrenaline (1 mM) to define non-specific binding defined binding only to alpha 1-adrenoceptors. This provides a means of differentiating high and low affinity [3H]-prazosin binding. 相似文献
7.
1背景 育龄妇女常见慢性下腹痛,可造成身体损害、情绪忧伤及导致巨大的健康服务费用。美国在这方面的花费超过8亿8千万美元(Mathias 1996)。英国全国数据库的一般性诊治资料显示,慢性下腹痛发病率及流行率与偏头痛、背部痛、哮喘发病率相似(Zondervan 1999)。 相似文献
8.
9.
10.