全文获取类型
收费全文 | 5888篇 |
免费 | 382篇 |
国内免费 | 32篇 |
专业分类
耳鼻咽喉 | 203篇 |
儿科学 | 298篇 |
妇产科学 | 122篇 |
基础医学 | 743篇 |
口腔科学 | 125篇 |
临床医学 | 454篇 |
内科学 | 1297篇 |
皮肤病学 | 111篇 |
神经病学 | 522篇 |
特种医学 | 586篇 |
外科学 | 727篇 |
综合类 | 50篇 |
预防医学 | 365篇 |
眼科学 | 94篇 |
药学 | 287篇 |
中国医学 | 17篇 |
肿瘤学 | 301篇 |
出版年
2022年 | 56篇 |
2021年 | 86篇 |
2020年 | 72篇 |
2019年 | 102篇 |
2018年 | 146篇 |
2017年 | 113篇 |
2016年 | 100篇 |
2015年 | 112篇 |
2014年 | 160篇 |
2013年 | 216篇 |
2012年 | 245篇 |
2011年 | 264篇 |
2010年 | 202篇 |
2009年 | 155篇 |
2008年 | 243篇 |
2007年 | 241篇 |
2006年 | 242篇 |
2005年 | 246篇 |
2004年 | 214篇 |
2003年 | 200篇 |
2002年 | 173篇 |
2001年 | 173篇 |
2000年 | 196篇 |
1999年 | 174篇 |
1998年 | 173篇 |
1997年 | 159篇 |
1996年 | 170篇 |
1995年 | 127篇 |
1994年 | 106篇 |
1993年 | 101篇 |
1992年 | 96篇 |
1991年 | 94篇 |
1990年 | 63篇 |
1989年 | 105篇 |
1988年 | 88篇 |
1987年 | 103篇 |
1986年 | 96篇 |
1985年 | 83篇 |
1984年 | 49篇 |
1983年 | 55篇 |
1982年 | 46篇 |
1981年 | 34篇 |
1980年 | 47篇 |
1979年 | 37篇 |
1978年 | 32篇 |
1977年 | 31篇 |
1976年 | 42篇 |
1975年 | 39篇 |
1971年 | 28篇 |
1969年 | 23篇 |
排序方式: 共有6302条查询结果,搜索用时 250 毫秒
1.
2.
3.
4.
JA HYEON KU CHEOL KWAK SEUNG-JUNE OH EUNSIK LEE SANG EUN LEE JAE-SEUNG PAICK 《International journal of urology》2004,11(7):489-493
BACKGROUND: Our aims in the present study were to estimate the influences of pain and urinary symptoms on quality of life, and to determine which of these two variables has the most predictive power with respect to quality of life in young men with chronic prostatitis-like symptoms. METHODS: Chronic prostatitis-like symptoms were measured by the National Institutes of Health-Chronic Prostatitis Symptom Index. Of the 28,841 men aged 20 years who lived in the study community, 18,495 men (a response rate 64.1%) agreed to participate in the study. A total of 1057 men who complained of symptoms indicative of chronic prostatitis were included in the study. The influences of pain and urinary symptoms on quality of life were determined using logistic regression analysis. The receiver operating characteristic (ROC) curve was used to estimate the predictive ability of each of these variables with respect to quality of life. RESULTS: Results from multivariate analysis showed that both pain and urinary symptoms were associated with an increased likelihood of impaired quality of life, although pain contributed more to a reduced quality of life than urinary symptoms. Relative to men who experienced mild pain, men who experienced moderate pain had a 3.9-fold risk of poor quality of life (odds ratio [OR], 3.87; 95% confidence interval [CI], 2.86-5.23; P < 0.001) and those who experienced severe pain had a 15.7-fold risk of reduced quality of life (OR, 15.68; 95% CI, 6.59-37.35; P < 0.001). Moderate urinary symptoms were associated with a 1.4-fold risk of bother (OR, 1.41; 95% CI, 1.01-1.99; P < 0.001) and severe urinary symptoms were associated with 2.4-fold risk (OR, 2.39; 95% CI, 1.37-4.12; P < 0.001), relative to mild urinary symptoms. Comparison of the effects of pain and urinary symptoms showed that pain severity had the most predictive power for bother, quality of life, and quality-of-life impact. The areas under the ROC curves for bother, quality of life, and quality-of-life impact were 71.3%, 69.3% and 72.5%, respectively. CONCLUSION: Urinary symptoms and pain might be associated with an increased likelihood of impaired quality of life in young men with chronic prostatitis-like symptoms. In addition, our findings suggest that pain severity is the most influential variable for determining quality of life in this population. 相似文献
5.
Jose M. Fernández-Cebrián Peter Vorwald Kuborn Mar Pardo de Lama Alfonso Sanjuanbenito Dehesa Manuel Nevado Santos Pedro A. Pacheco Martínez Beatriz Fernández-Escudero 《Clinical & translational oncology》2005,7(3):101-109
Colorectal cancer is one of the best studied of all malignant diseases interms of genetics and/or molecular prognostic factors. These factors, and relationships with prognosis, may have important implications especially in the design of surgical and adjuvant chemo-radiotherapy options. However, the true prognostic significance of all known factors has yet to be realised. We have reviewed the literature with specific focus on the role of molecular markers involved in prognosis and the prediction of response to adjuvant treatment. 相似文献
6.
7.
8.
F J Herrera R Codoceo J Cienfuegos F Pardo N P Mora F Pereira J L Castillo-Olivares 《European surgical research. Europ?ische chirurgische Forschung. Recherches chirurgicales européennes》1990,22(1):19-26
Orthotopic liver transplantation was performed in 20 pigs. Serum total bile acids (STBA) were determined and their profile compared with standard early function parameters: total bilirubin, aspartate aminotransferase (AST), alanine aminotransferase (ALT) and lactic acid. In phase I, the STBA level was 32.89 +/- 1.29 mumol/l. In phase II, STBA accumulated to 84.46 +/- 15.25 mumol/l (p less than 0.01), followed by hepatic clearance in phase III (63.61 +/- 9.71 mumol/1; NS). Between phase III and 6- and 12-hour samples, STBA decreased progressively, reaching values of 33.63 +/- 7.05 mumol/l at 24 h. AST was elevated in phases I, II, III, and at 6, 12 and 24 h (p less than 0.001), as was ALT (but with insignificant differences). Thus, STBA and their profile appear to be earlier and more specific indicators of early graft function than conventional parameters. 相似文献
9.
10.