全文获取类型
收费全文 | 437129篇 |
免费 | 43945篇 |
国内免费 | 2920篇 |
专业分类
耳鼻咽喉 | 8815篇 |
儿科学 | 13800篇 |
妇产科学 | 8401篇 |
基础医学 | 44249篇 |
口腔科学 | 8978篇 |
临床医学 | 49025篇 |
内科学 | 110973篇 |
皮肤病学 | 14619篇 |
神经病学 | 39798篇 |
特种医学 | 14686篇 |
外国民族医学 | 101篇 |
外科学 | 76596篇 |
综合类 | 1494篇 |
现状与发展 | 72篇 |
一般理论 | 89篇 |
预防医学 | 32960篇 |
眼科学 | 8947篇 |
药学 | 21192篇 |
1篇 | |
中国医学 | 922篇 |
肿瘤学 | 28276篇 |
出版年
2023年 | 6160篇 |
2022年 | 2261篇 |
2021年 | 7334篇 |
2020年 | 8343篇 |
2019年 | 6992篇 |
2018年 | 16008篇 |
2017年 | 12852篇 |
2016年 | 13964篇 |
2015年 | 15049篇 |
2014年 | 22487篇 |
2013年 | 26936篇 |
2012年 | 25756篇 |
2011年 | 25776篇 |
2010年 | 20252篇 |
2009年 | 21613篇 |
2008年 | 23175篇 |
2007年 | 22565篇 |
2006年 | 23984篇 |
2005年 | 21030篇 |
2004年 | 19091篇 |
2003年 | 16713篇 |
2002年 | 15969篇 |
2001年 | 11260篇 |
2000年 | 11012篇 |
1999年 | 9673篇 |
1998年 | 4790篇 |
1997年 | 4397篇 |
1996年 | 4258篇 |
1995年 | 4015篇 |
1994年 | 2644篇 |
1993年 | 2193篇 |
1992年 | 4755篇 |
1991年 | 4421篇 |
1990年 | 3902篇 |
1989年 | 3793篇 |
1988年 | 3476篇 |
1987年 | 3142篇 |
1986年 | 3055篇 |
1985年 | 2711篇 |
1984年 | 2071篇 |
1983年 | 1815篇 |
1982年 | 1282篇 |
1979年 | 1577篇 |
1978年 | 1236篇 |
1977年 | 1233篇 |
1974年 | 1259篇 |
1973年 | 1262篇 |
1972年 | 1256篇 |
1971年 | 1149篇 |
1970年 | 1137篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
21.
22.
Jean-Sébastien Fallu Jürgen Rehm Emmanuel N. Kuntsche Esther Grichting Neerav Monga Edward M. Adlaf Susan J Bondy Gerhard Gmel 《Sozial- und Pr?ventivmedizin》2006,8(1):363-372
Volume and profile of alcohol consumption among students and classmates as predictors of aggression and victimization: a multilevel
analysis among Swiss adolescents
Objective:
To test the effects of the volume of alcohol consumption and drinking patterns on alcohol-related aggression and victimization, both at the individual and class levels. 相似文献23.
L González-Bayón S González-Moreno G Ortega-Pérez 《European journal of surgical oncology》2006,32(6):619-624
The new treatment strategy for Peritoneal Surface Malignancy combines a cytoreductive surgery and perioperative intraperitoneal chemotherapy. Cytoreduction removes all macroscopic tumor. Intraperitoneal chemotherapy avoids implantation of microscopic residual tumor cells on intra-abdominal surfaces when it is administered intraoperatively and/or early in the postoperative period. Delivering cytotoxic drugs directly into the peritoneal cavity maximizes dose intensity and minimizes systemic toxicity. Hyperthermia is selectively cytotoxic for malignant cells and potentiates the effect of chemotherapy. Implementation of this procedure makes the perioperative personnel to face a risk of exposure to cytotoxic agents. Furthermore, peritonectomies and electro-evaporation of tumor nodules are performed with high voltage electrocautery, generating a large amount of surgical smoke during several hours. Inhalation of these fumes may be also a risk for healthcare workers. In this article, we analyse in depth these new risks of the operating room personnel, we review the literature, and we give guidelines for secure performance of cytoreductive surgery and hyperthermic intraoperative intraperitoneal chemotherapy, as well as for early postoperative intraperitoneal chemotherapy administration. These new procedures are safe techniques for patients and healthcare workers provided adequate policies are adopted to avoid occupational exposure. 相似文献
24.
Michiel R. de Boer Jos Twisk Annette C. Moll Hennie J. M. Völker-Dieben Henrica C. W. de Vet Ger H. M. B. van Rens 《Ophthalmic & physiological optics》2006,26(6):535-544
Consecutive patients (n = 215) who were referred to optometric (55%) or multidisciplinary (45%) low-vision services and above 50 years of age were recruited from four hospitals in the Netherlands. They completed two vision-related quality of life questionnaires, the Vision Quality of Life Core Measure (VCM1) and the Low Vision Quality of Life Questionnaire (LVQOL), before their first visit with low-vision services and 1 year later. At follow-up, patients referred to multidisciplinary low-vision services had lower scores on the mobility subscale of the LVQOL than patients referred to optometric low-vision services [5.3 points; 95% confidence interval (CI): 0.2-10.5]. Paired sample t-tests for the two groups of patients taken together show improvement for the VCM1 (3.1 points; 95% CI: 0.6-5.6) and deterioration for the basic aspects of vision (3.5 points; 95% CI: 1.1-5.9) and the mobility (6.6 points; 95% CI: 3.7-9.5) subscales of the LVQOL. In conclusion, people referred to optometric services showed less deterioration in mobility than those referred to multidisciplinary services. No differences were observed for any of the other subscales of the LVQOL and the VCM1. Future research in this field should include randomized controlled designs comparing low-vision services with no treatment or placebo. 相似文献
25.
26.
27.
Timothy C. Evans MD PhD ; Keren H. Wick PhD ; Douglas M. Brock PhD ; Douglas C. Schaad PhD ; Ruth Ballweg MPA PA-C 《The Journal of rural health》2006,22(3):212-219
CONTEXT: The physician assistant profession has been moving toward requiring master's degrees for new practitioners, but some argue this could change the face of the discipline. PURPOSE: To see if there is an association between physician assistants' academic degrees and practice in primary care, in rural areas, and with the medically underserved. METHODS: Surveys were sent to 880 graduates of the first 32 University of Washington physician assistant classes through 2000. Respondents noted their academic degree at program entry and the highest degree attained at any time up to the time of survey. Relationships between practice characteristics and academic degree levels were tested by unadjusted odds ratios and logistic regression after controlling for year of graduation and sex. RESULTS: Of the 478 respondents, 54% worked in primary care, about 30% practiced in nonmetropolitan communities, and 42% reported providing care for the medically underserved. Respondents with no degree (33% of total at entry, 24% at survey) were significantly more likely than degree holders to work in primary care and nonmetropolitan areas. Respondents with no degree at program entry were significantly more likely, and those with no degree at the time of the survey were marginally more likely, to self-report work with the medically underserved. CONCLUSION: Respondents with no academic degree are significantly more likely to demonstrate a commitment to primary, rural, and underserved health care. These findings may inform the national debate about the impact of required advanced degrees on the practice patterns of nonphysician providers. 相似文献
28.
Social phobia, fear of negative evaluation and harm avoidance. 总被引:1,自引:0,他引:1
M Faytout J Tignol J Swendsen D Grabot B Aouizerate J P Lépine 《European psychiatry》2007,22(2):75-79
This naturalistic, prospective investigation examined the role of fear of negative evaluation and the personality trait of harm avoidance in the anxiety levels of treated social phobia patients. One hundred and fifty-seven patients with DSM-IV social phobia were assessed before starting treatment and were then followed for up to two years. As expected, greater fear of negative evaluation and higher scores of harm avoidance were associated with greater anxiety at the 6 month follow-up, and harm avoidance remained a significant predictor at 24 months. However, no evidence was found for an interaction between the personality and cognitive variables examined. The findings are discussed in terms of the relative independence of these factors, as well as their potential implications for the treatment of this disorder. 相似文献
29.