全文获取类型
收费全文 | 17908篇 |
免费 | 3171篇 |
国内免费 | 128篇 |
专业分类
耳鼻咽喉 | 207篇 |
儿科学 | 387篇 |
妇产科学 | 505篇 |
基础医学 | 1512篇 |
口腔科学 | 443篇 |
临床医学 | 4068篇 |
内科学 | 3965篇 |
皮肤病学 | 339篇 |
神经病学 | 2411篇 |
特种医学 | 585篇 |
外科学 | 2331篇 |
综合类 | 21篇 |
一般理论 | 3篇 |
预防医学 | 1644篇 |
眼科学 | 541篇 |
药学 | 827篇 |
中国医学 | 10篇 |
肿瘤学 | 1408篇 |
出版年
2024年 | 69篇 |
2023年 | 632篇 |
2022年 | 320篇 |
2021年 | 700篇 |
2020年 | 626篇 |
2019年 | 511篇 |
2018年 | 1042篇 |
2017年 | 1009篇 |
2016年 | 1002篇 |
2015年 | 1038篇 |
2014年 | 1307篇 |
2013年 | 1397篇 |
2012年 | 1050篇 |
2011年 | 1090篇 |
2010年 | 965篇 |
2009年 | 1070篇 |
2008年 | 847篇 |
2007年 | 727篇 |
2006年 | 739篇 |
2005年 | 629篇 |
2004年 | 454篇 |
2003年 | 381篇 |
2002年 | 363篇 |
2001年 | 238篇 |
2000年 | 119篇 |
1999年 | 233篇 |
1998年 | 295篇 |
1997年 | 281篇 |
1996年 | 335篇 |
1995年 | 233篇 |
1994年 | 240篇 |
1993年 | 178篇 |
1992年 | 148篇 |
1991年 | 138篇 |
1990年 | 90篇 |
1989年 | 103篇 |
1988年 | 92篇 |
1987年 | 79篇 |
1986年 | 77篇 |
1985年 | 49篇 |
1984年 | 50篇 |
1983年 | 36篇 |
1982年 | 39篇 |
1981年 | 28篇 |
1980年 | 23篇 |
1979年 | 22篇 |
1978年 | 18篇 |
1977年 | 12篇 |
1975年 | 9篇 |
1971年 | 11篇 |
排序方式: 共有10000条查询结果,搜索用时 546 毫秒
91.
Carlo Piccinni Chiara Sacripanti Elisabetta Poluzzi Domenico Motola Lara Magro Ugo Moretti Anita Conforti Nicola Montanaro 《European journal of clinical pharmacology》2010,66(2):199-206
Aim
The aim of the present study was to collect and compare cases of drug-induced PML in order to contribute to the debate about the role of the underlying diseases and/or drug immunosuppression in PML occurrence. 相似文献92.
93.
Changes in the design of hospital wards have usually been determined by architects and members of the nursing and medical professions, the views and preferences of patients have seldom been sought directly The Hospital Anxiety and Depression scale and the Disturbance Due to Hospital Noise questionnaire were administered to 64 female patients on bay and Nightingale wards together with a questionnaire designed for this study Perceptions of social and physical factors of ward design were examined, and their relationship to psychological well-being and sleep patterns The results show that the bay ward seemed to offer a more favourable environment for patients but some of the disadvantages of bay wards are balanced by better staffing levels and better and more modern facilities Visibility to nurses was lower on the bay ward The Nightingale ward was perceived as significantly noisier than the bay ward and noise levels were significantly correlated to anxiety scores Paradoxically the increase in noise levels appeared to improve the perceived level of privacy on the Nightingale ward Seventy-five per cent of patients were found to prefer the bay ward design, and since neither design appears to have major disadvantages their continued introduction should be encouraged However, recommendations are made concerning the optimizing of patients' well-being within the bay ward setting 相似文献
94.
MA Nasar FRCP FRCP EM Lyle BSc MRPharmS 《International journal of clinical practice》1994,48(1):19-21
SUMMARY Serum potassium was measured within 24 hours in 156 patients (48 male, 108 female) with an average age of 81.9 years admitted to the unit with acute illness. Of the 156 patients, 88 (56.4%) were taking diuretics (none was on ACE inhibitors); 20 patients (12.8%) were also on digoxin therapy. In all, 24 patients (16%) had hypokalaemia and 3 (2%) hyperkalaemia. Hypokalaemia was seen in patients associated with acute illness. There was no significant difference between the diuretic and non-diuretic groups. Monitoring of serum potassium is not routinely indicated to detect hypokalaemia in patients on diuretic therapy except in those with severe hepatic or renal impairment or those on digoxin. 相似文献
95.
The adhesion to hydrogel contact lenses and growth of Serratia marcescens on artificial tear fluid (ATF) soaked lenses was investigated. Results indicated that a corneal ulcer isolate adhered more avidly to lenses; ATF increased adhesion for all strains tested. The contact lens induced acute red eye (CLARE) isolate adhered poorly; however; it grew to a larger extent on ATF-coated lenses. The ability of the corneal ulcer isolate to adhere to lenses may be an important factor in its pathogenicity whereas the ability of the CLARE isolate to grow on the lens in the presence of antimicrobial tear proteins may be important in the development of inflammation. 相似文献
96.
Danny Lam RMN RNT PGCE Dip in GHGMR BSc BA MSc MA & Linda Cheng RMN RGN RMNS RNT BA Dip in Counselling Supervision 《Journal of advanced nursing》1998,27(6):1143-1150
Research shows that clients with automatic thoughts (dysfunctional thinking) often do not think of alternative explanations in relation to negative events. Furthermore, these automatic thoughts are characterized by a broad global, self-evaluative and ambiguous nature that could make disputing (or changing the ways they think) the most difficult part of the therapeutic process. This paper proposes a two-stage practise-based disputing model, guided by research, that aims to 'bring' an automatic thought to a specific, objective, quantifiable and concrete level at which not only is the particular aspect(s) of the automatic thought that causes emotional disturbances finely focused, but the disputing is also likely to be effective and manageable. Furthermore, it will also generate alternative explanations that are helpful in reducing emotional disturbances and in facilitating problem solving approach. In this paper, the authors use a case example to discuss the rationale that underpins the conceptualization of the model and to illustrate the process in which the strategies of the model are effectively used. 相似文献
97.
Depth of epidural space in children 总被引:1,自引:0,他引:1
M. A. Hasan MB ChB DA FRCA R. F. Howard BSc MB ChB FRCA A. R. Lloyd-Thomas MB BS FRCA 《Anaesthesia》1994,49(12):1085-1087
98.
99.
100.