全文获取类型
收费全文 | 1181篇 |
免费 | 93篇 |
国内免费 | 6篇 |
专业分类
耳鼻咽喉 | 3篇 |
儿科学 | 33篇 |
妇产科学 | 38篇 |
基础医学 | 112篇 |
口腔科学 | 13篇 |
临床医学 | 116篇 |
内科学 | 193篇 |
皮肤病学 | 11篇 |
神经病学 | 143篇 |
特种医学 | 113篇 |
外科学 | 170篇 |
综合类 | 46篇 |
预防医学 | 94篇 |
眼科学 | 12篇 |
药学 | 64篇 |
中国医学 | 1篇 |
肿瘤学 | 118篇 |
出版年
2023年 | 15篇 |
2021年 | 12篇 |
2020年 | 18篇 |
2019年 | 22篇 |
2018年 | 20篇 |
2017年 | 27篇 |
2016年 | 24篇 |
2015年 | 27篇 |
2014年 | 33篇 |
2013年 | 55篇 |
2012年 | 55篇 |
2011年 | 40篇 |
2010年 | 49篇 |
2009年 | 41篇 |
2008年 | 39篇 |
2007年 | 42篇 |
2006年 | 66篇 |
2005年 | 37篇 |
2004年 | 67篇 |
2003年 | 40篇 |
2002年 | 30篇 |
2001年 | 16篇 |
2000年 | 13篇 |
1999年 | 23篇 |
1998年 | 28篇 |
1997年 | 31篇 |
1996年 | 30篇 |
1995年 | 34篇 |
1994年 | 18篇 |
1993年 | 13篇 |
1992年 | 23篇 |
1991年 | 19篇 |
1990年 | 19篇 |
1989年 | 28篇 |
1988年 | 22篇 |
1987年 | 19篇 |
1986年 | 21篇 |
1985年 | 17篇 |
1984年 | 13篇 |
1983年 | 15篇 |
1982年 | 5篇 |
1981年 | 11篇 |
1980年 | 8篇 |
1979年 | 13篇 |
1978年 | 21篇 |
1977年 | 12篇 |
1976年 | 7篇 |
1974年 | 4篇 |
1968年 | 4篇 |
1963年 | 4篇 |
排序方式: 共有1280条查询结果,搜索用时 0 毫秒
1.
In Sweden, a psychiatry reform, aimed at improving the living conditions of the psychiatrically disabled, came into force in 1995. The aim of the present study was to evaluate the impact of the reform by investigating quality of life and standard of living 2 years later in a randomly selected group of people with longstanding psychiatric disability. Self-ratings and interviews were conducted in a study group and a control group. The study group consisted of 19 women and 18 men (mean age 46.1 years) diagnosed with neurosis, schizophrenia or affective disorder. The control group consisted of 19 women and 17 men (mean age 48.7 years). Self-rated quality of life was significantly poorer in the study group (P < 0.0001, unpaired t-test), and so was housing (P < 0.001, test of similar proportions in independent samples). We found no significant positive correlation between subjective quality of life and standard of living in either group but a significant negative correlation in the control group (P < 0.05; r = 0.40, Pearson correlation coefficient). The results suggest that, in 1997, people with longstanding psychiatric disability still had poorer quality of life than the general population. This may be due to factors other than outward standard of living. 相似文献
2.
3.
4.
The first 150 words of the full text of this article appear below. Key points Coronary artery disease accounts for >30% ofdeaths in Western society. The diagnosis of myocardial infarctionshould be qualified by size, causation and time from occurrence. Mortalityis reduced by immediate or primary percutaneouscoronary intervention or thrombolysis within the first 24 hof onset of ST-segment elevation myocardial infarction. Strategiesto reduce platelet activation (glycoprotein IIb/IIIa receptorantagonists, or clopidogrel) are now recommended in the treatmentof high-risk non-ST-segment myocardial infarction/unstable angina. Elevatedserum troponins may be the result of non-ischaemic myocardialdamage, especially in critical illness.
Pathophysiology
Changes in the definition of terms relating to the diagnosisof myocardial infarction (MI) have evolved by better understandingof the pathophysiology culminating in the new term of acutecoronary syndrome (ACS). Figure 1 illustrates the processesthat occur in the development of an acute coronary event. 相似文献
5.
6.
7.
Fatal endocarditis due to Listeria monocytogenes 总被引:2,自引:0,他引:2
Three fatal cases of listerial endocarditis were studied. The first case occurred in an apparently healthy 58-year-old man, who presented with symptoms of pneumonitis. The second case developed in a 75-year-old woman with adenocarcinoma of the lung and aortic stenosis. In the third patient, an 83-year-old woman, aortic valve vegetations with perforations were found at necropsy. A colonic adenocarcinoma was found in the first and third cases. Ampicillin, alone or with an aminoglycoside, was the antibiotic used. Urgent valve replacement was performed in the first case. Listeria monocytogenes was isolated from blood cultures in all three cases. A review of 41 other patients with listerial endocarditis showed a nonspecific clinical picture, but septic complications occurred in one-half of the cases. Thirty-nine patients had at least one predisposing factor, which was underlying heart disease in 25 cases. The mortality rate was 48%. 相似文献
8.
Birgitte Lidegaard Frederiksen Merete Osler Henrik Harling Steen Ladelund Torben Jørgensen 《Social science & medicine (1982)》2009
This paper investigates the association between individually measured socioeconomic status (SES) and all-cause survival in colorectal cancer patients, and explores whether factors related to the patient, the disease, or the surgical treatment mediate the observed social gradient. 相似文献
9.
J. L. Frederiksen H. B. W. Larsson P. Christiansen J. Olesen 《European journal of neurology》1997,4(6):561-566
To evaluate various MRI criteria we studied a representative group of 149 consecutive patients below 50 years with acute monosymptomatic optic neuritis (AMON), a frequent first manifestation of multiple sclerosis (MS). The presence, number, size, and localization of areas of increased signal (AIS) on T2-weighted brain MRIs obtained at 1.5 T were described and compared with findings in 71 healthy persons aged 21–50 years without diabetes, cerebrovascular or neurologic diseases. MRI was performed within 2–145 days, median 16 days from onset of AMON and showed from 0 to 26 AIS, sized 2–30 mm, in 79 of 149 (53%) patients compared to 0–18 AIS, sized 2–12 mm, in 31 of 71 (44%) healthy persons. In patients, AIS were significantly more frequent in women than in men (χ2 = 4.67, p > 0.05). Periventricular AIS were revealed in 70 (47%) patients and in 14 (20%) healthy persons. Subcortical AIS were present in 5 (3%) patients and in 18 (25%) healthy persons. Infratentorial AIS were present in only 3 (2%) patients. The sensitivity and specificity of previously proposed diagnostic MRI criteria for MS were unsatisfactory in our group of patients and have previously only been validated in definite MS. We therefore constructed and tested four new sets of criteria. The set with the best relation between sensitivity (e.g. 41%) and specificity (e.g. 93%) was the following: presence of two or more AIS, of which at least one is periventricular or infratentorial, combined with the absence of subcortical AIS. These criteria are recommended for patients with AMON and might be used in other patients with possible or probable MS. 相似文献
10.