全文获取类型
收费全文 | 4131篇 |
免费 | 413篇 |
国内免费 | 9篇 |
专业分类
耳鼻咽喉 | 52篇 |
儿科学 | 119篇 |
妇产科学 | 72篇 |
基础医学 | 572篇 |
口腔科学 | 69篇 |
临床医学 | 330篇 |
内科学 | 825篇 |
皮肤病学 | 41篇 |
神经病学 | 419篇 |
特种医学 | 317篇 |
外科学 | 561篇 |
综合类 | 71篇 |
一般理论 | 1篇 |
预防医学 | 558篇 |
眼科学 | 36篇 |
药学 | 261篇 |
肿瘤学 | 249篇 |
出版年
2021年 | 40篇 |
2019年 | 48篇 |
2018年 | 49篇 |
2017年 | 41篇 |
2016年 | 47篇 |
2015年 | 52篇 |
2014年 | 74篇 |
2013年 | 95篇 |
2012年 | 126篇 |
2011年 | 137篇 |
2010年 | 105篇 |
2009年 | 72篇 |
2008年 | 134篇 |
2007年 | 159篇 |
2006年 | 137篇 |
2005年 | 150篇 |
2004年 | 133篇 |
2003年 | 139篇 |
2002年 | 134篇 |
2001年 | 105篇 |
2000年 | 112篇 |
1999年 | 120篇 |
1998年 | 79篇 |
1997年 | 61篇 |
1996年 | 79篇 |
1995年 | 75篇 |
1994年 | 54篇 |
1993年 | 57篇 |
1992年 | 89篇 |
1991年 | 103篇 |
1990年 | 101篇 |
1989年 | 102篇 |
1988年 | 90篇 |
1987年 | 96篇 |
1986年 | 92篇 |
1985年 | 91篇 |
1984年 | 68篇 |
1983年 | 76篇 |
1982年 | 56篇 |
1981年 | 45篇 |
1980年 | 44篇 |
1979年 | 69篇 |
1978年 | 46篇 |
1977年 | 51篇 |
1976年 | 55篇 |
1975年 | 42篇 |
1973年 | 42篇 |
1972年 | 32篇 |
1971年 | 36篇 |
1968年 | 37篇 |
排序方式: 共有4553条查询结果,搜索用时 46 毫秒
1.
Quality of life in stroke survivor–caregiver dyads: a new conceptual framework and longitudinal study protocol
下载免费PDF全文
![点击此处可从《Journal of advanced nursing》网站下载免费的PDF全文](/ch/ext_images/free.gif)
2.
3.
4.
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
5.
6.
Henry F. Vaughan 《American journal of public health》1929,19(5):546-548
7.
Efficient high-frequency body coil for high-field MRI. 总被引:1,自引:0,他引:1
J T Vaughan G Adriany C J Snyder J Tian T Thiel L Bolinger H Liu L DelaBarre K Ugurbil 《Magnetic resonance in medicine》2004,52(4):851-859
The use of body coils is favored for homogeneous excitation, and such coils are often paired with surface coils or arrays for sensitive reception in many MRI applications. While the body coil's physical size and resultant electrical length make this circuit difficult to design for any field strength, recent efforts to build efficient body coils for applications at 3T and above have been especially challenging. To meet this challenge, we developed an efficient new transverse electromagnetic (TEM) body coil and demonstrated its use in human studies at field strengths up to 4 T. Head, body, and breast images were acquired within peak power constraints of <8 kW. Bench studies indicate that these body coils are feasible to 8 T. RF shimming was used to remove a high-field-related cardiac imaging artifact in these preliminary studies. P41RR13230 相似文献
8.
9.
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
10.
Monitoring the performance of the health care delivery system is a public health function that becomes more important as organized delivery systems begin to take control over larger portions of the medical care market. The study reported here illustrates how standard medical care epidemiology can be applied to analysis of health care system performance to aid governmental efforts to monitor new developments in the medical care market. In order to evaluate the efficiency of hospital care delivered in Iowa, age- and sex-adjusted population admission rates for five common procedures were generated for all 99 counties. The five common procedures were defined as follows: hernia, tonsillectomy, cesarean section, hysterectomy, and cholecystectomy. In addition, variations in 11 ambulatory care-sensitive condition rates were analyzed. Residents of at least 15 counties were at significantly greater than average risk of receiving each of the common procedures (chi 2 test, P < 0.05). Counties that had a high rate for one procedure tended to have a high rate for at least one other procedure. Several counties had more than twice the mean rate. Even a 10% reduction, when added across all five common procedures. amounts to well over 2,000 hospitalizations avoided. It is assumed that reductions would be concentrated in high-rate counties. If a 50% reduction could be achieved in only part of the ambulatory care-sensitive procedures, more than 10,000 hospital admissions could be avoided. 相似文献