全文获取类型
收费全文 | 837篇 |
免费 | 162篇 |
国内免费 | 17篇 |
专业分类
耳鼻咽喉 | 12篇 |
儿科学 | 46篇 |
妇产科学 | 9篇 |
基础医学 | 32篇 |
口腔科学 | 10篇 |
临床医学 | 150篇 |
内科学 | 222篇 |
皮肤病学 | 29篇 |
神经病学 | 43篇 |
特种医学 | 76篇 |
外科学 | 172篇 |
综合类 | 48篇 |
现状与发展 | 20篇 |
预防医学 | 56篇 |
眼科学 | 25篇 |
药学 | 18篇 |
中国医学 | 2篇 |
肿瘤学 | 46篇 |
出版年
2024年 | 6篇 |
2023年 | 42篇 |
2021年 | 17篇 |
2020年 | 22篇 |
2019年 | 9篇 |
2018年 | 49篇 |
2017年 | 44篇 |
2016年 | 31篇 |
2015年 | 40篇 |
2014年 | 39篇 |
2013年 | 55篇 |
2012年 | 17篇 |
2011年 | 26篇 |
2010年 | 46篇 |
2009年 | 61篇 |
2008年 | 29篇 |
2007年 | 20篇 |
2006年 | 24篇 |
2005年 | 12篇 |
2004年 | 10篇 |
2003年 | 12篇 |
2002年 | 12篇 |
2001年 | 17篇 |
2000年 | 10篇 |
1999年 | 18篇 |
1998年 | 28篇 |
1997年 | 32篇 |
1996年 | 43篇 |
1995年 | 29篇 |
1994年 | 17篇 |
1993年 | 21篇 |
1992年 | 7篇 |
1991年 | 8篇 |
1990年 | 10篇 |
1989年 | 12篇 |
1988年 | 15篇 |
1987年 | 14篇 |
1986年 | 11篇 |
1985年 | 12篇 |
1984年 | 4篇 |
1983年 | 6篇 |
1982年 | 8篇 |
1981年 | 4篇 |
1980年 | 5篇 |
1978年 | 12篇 |
1977年 | 8篇 |
1976年 | 7篇 |
1975年 | 5篇 |
1964年 | 5篇 |
1963年 | 4篇 |
排序方式: 共有1016条查询结果,搜索用时 203 毫秒
111.
112.
Total joint replacement has been one of the most remarkable successes of modern medical technology. Once John Charnley had
solved the problems of implant design, choice of materials, implant fixation, and infection (initial rates of infection were
approximately 10%), the way was clear for the widespread use of this valuable treatment, which is highly effective at removing
pain and restoring function. Unfortunately, infection still remains an important, though less common, problem. It is associated
with serious morbidity (pain, loss of function, wound breakdown, wound discharge, implant failure) and sometimes mortality.
It may be impossible to eradicate or suppress infection in the long term without removal of the prosthesis, and most clinicians
would consider it unwise to re-implant a new prosthesis in the presence of infection. Hence, patients with infected prosthetic
joints generally require multiple additional operations and prolonged periods of antibiotic therapy. Even radical attempts
at cure may fail (in 10% to 15% of cases in most series), requiring further cycles of treatment with progressively deteriorating
function. Thus, the treatment of prosthetic joint infection is arduous for the patient and the health care team, with no guarantee
of success. 相似文献
113.
Hall RM; Unsworth A; Wroblewski BM; Siney P; Powell NJ 《Rheumatology (Oxford, England)》1997,36(1):20-26
Charnley prostheses, retrieved at revision surgery, were studied to assess
the effects of friction on the total hip replacement procedure. Frictional
resistance was measured using the Durham hip function simulator under both
dry and lubricated conditions. The friction factor values (f) for the
explanted prostheses were found to have a non- Gaussian distribution with
medians of 0.13 [inter-quartile range (IQR) 0.10-0.16] and 0.06 (IQR
0.005-0.08) for dry and lubricated (n = 0.01 Pa s) regimes, respectively.
New Charnley prostheses had values of f equal to 0.11 +/- 0.025 and 0.04
+/- 0.01 under the same conditions, and showed no large deviation from a
Gaussian distribution. There was found to be a statistically significant
difference in the medians of the friction factors for new and retrieved
prostheses in the lubricated regime. Ingression of cement into the worn
region of the cup was found to increase the friction factor significantly
under dry conditions. There was no evidence of an increase in the friction
factor or torque for those joints that had a loose socket with respect to
those that were fixed at revision. A decrease in the frictional torque
against number of cycles undergone by the joint in vivo may indicate that a
fatigue-type process may have a role in the loosening of the socket.
However, this relationship was found not to be significant for friction
measured under lubricated conditions and it seems unlikely that the
frictional torque generated in this type of prosthesis will contribute
significantly to the long-term loosening of the socket.
相似文献
114.
115.
Sue Hall Rachael H. DoddIrene J. Higginson BM BS BMedSci PhD FFPHM FRCP OBE FMedSci 《Geriatric nursing (New York, N.Y.)》2014
This study uses the Framework approach to qualitative analysis to explore and compare the views of residents in care homes for older people, their families and care providers on maintaining dignity. We interviewed 33 care home managers, 29 care assistants, 18 care home nurses, 10 community nurses, 16 residents and 15 members of residents' families. The most prevalent themes were: “independence,” and “privacy”; followed by “comfort and care,” “individuality,” “respect,” “communication,” “physical appearance” and “being seen as human.” Residents and their families sometimes described incidents where a resident's dignity had been compromised. How to help residents maintain dignity and focusing on fostering dignity, can be a starting point for improving the quality of care and quality of life of residents. It is, however, important to remove the gap between the rhetoric of dignity conserving care and the reality experienced by residents in these and other care settings. 相似文献
116.
117.
118.
119.
120.
G. C. Fisher BM FFARCS M. C. C. Clapham MB BS FFARCS P. Hutton BSc PhD MB ChB FFARCS 《Anaesthesia》1991,46(5):413-416
The effect of an assessment dose of the benzodiazepine antagonist flumazenil was studied in 20 patients in an intensive care unit. The patients had been sedated with alfentanil and midazolam, and were ready to be weaned from mechanical ventilation. In 10 patients flumazenil was titrated just to produce full arousal whilst the midazolam infusion was continued; flumazenil administration was repeated one hour later after the infusion of midazolam had been stopped. In another 10 patients, flumazenil was administered only once, coinciding with the cessation of sedation. The duration of full arousal in both groups was less than 15 minutes in 75% of patients given a single dose of flumazenil (median dose 0.4 mg) although some effect persisted for up to 60 minutes. The cardiovascular effects of arousal were transient and probably not clinically significant. A brief duration of action is advantageous if the patient is found still to require sedation. 相似文献