全文获取类型
收费全文 | 2782篇 |
免费 | 245篇 |
国内免费 | 37篇 |
专业分类
耳鼻咽喉 | 13篇 |
儿科学 | 91篇 |
妇产科学 | 51篇 |
基础医学 | 306篇 |
口腔科学 | 45篇 |
临床医学 | 403篇 |
内科学 | 507篇 |
皮肤病学 | 104篇 |
神经病学 | 115篇 |
特种医学 | 252篇 |
外科学 | 325篇 |
综合类 | 85篇 |
预防医学 | 395篇 |
眼科学 | 35篇 |
药学 | 181篇 |
中国医学 | 1篇 |
肿瘤学 | 155篇 |
出版年
2022年 | 18篇 |
2021年 | 37篇 |
2020年 | 40篇 |
2019年 | 39篇 |
2018年 | 72篇 |
2017年 | 38篇 |
2016年 | 54篇 |
2015年 | 41篇 |
2014年 | 61篇 |
2013年 | 96篇 |
2012年 | 118篇 |
2011年 | 112篇 |
2010年 | 92篇 |
2009年 | 80篇 |
2008年 | 103篇 |
2007年 | 106篇 |
2006年 | 109篇 |
2005年 | 119篇 |
2004年 | 92篇 |
2003年 | 78篇 |
2002年 | 80篇 |
2001年 | 75篇 |
2000年 | 61篇 |
1999年 | 61篇 |
1998年 | 92篇 |
1997年 | 86篇 |
1996年 | 78篇 |
1995年 | 71篇 |
1994年 | 62篇 |
1993年 | 59篇 |
1992年 | 54篇 |
1991年 | 56篇 |
1990年 | 52篇 |
1989年 | 55篇 |
1988年 | 80篇 |
1987年 | 55篇 |
1986年 | 36篇 |
1985年 | 59篇 |
1984年 | 22篇 |
1983年 | 23篇 |
1982年 | 21篇 |
1981年 | 23篇 |
1980年 | 24篇 |
1979年 | 30篇 |
1978年 | 28篇 |
1977年 | 24篇 |
1976年 | 27篇 |
1975年 | 15篇 |
1974年 | 20篇 |
1969年 | 16篇 |
排序方式: 共有3064条查询结果,搜索用时 156 毫秒
1.
2.
3.
4.
M Ardigo I Malizewsky ML Dell'Anna E Berardesca M Picardo 《Journal of the European Academy of Dermatology and Venereology》2007,21(10):1344-1350
BACKGROUND: Vitiligo is the most common pigmentary disorder with a global incidence from 0.1% to 2% in different geographical areas. Histopathology and histochemistry have shown the reduction of melanocytes in achromic patches, but microscopic changes of lesional and non-lesional skin are still not completely understood. Reflectance confocal microscopy (RCM), based on the different light reflectance index of cutaneous structures, allowed in vivo, en face microscopic evaluation of superficial skin layers with a resolution similar to skin histology. AIM: The purpose of this study was to evaluate RCM features of lesional and non-lesional skin of vitiligo patients. Moreover, re-pigmented areas were taken into consideration in order to evaluate melanocyte response to ultraviolet B (UVB) radiation. SUBJECTS AND METHODS: Sixteen patients of different phototypes affected by active non-segmental vitiligo and 10 controls were enrolled in the study. In vivo skin imaging was done using a commercially available RCM (Lucid, Vivascope 1500. Re-pigmented areas from 6 to 16 patients (after UVB narrow-band therapy) were also examined. RESULTS: Vitiligo lesions showed the disappearance of the bright rings normally seen at the dermo-epidermal junction. Moreover, non-lesional skin of vitiligo patients showed unexpected changes as the presence of half-rings or scalloped border-like features of the bright papillary rings. In re-pigmented areas after UVB narrow band therapy, the presence of activated, dendritic melanocytes was seen. CONCLUSIONS: Considering our results, and following further studies, RCM clinical applications could be used in the therapeutic monitoring and evaluation of the evolution of vitiligo. 相似文献
5.
6.
Martin F. Ward Angie Titchen Clare Morrell Brendan McCormack Alison Kitson 《Journal of clinical nursing》1998,7(1):29-36
? The paper describes a multiproject practice development programme undertaken over a period of 1 year. ? The background and development of the programme are outlined, whilst attention is paid to the innovatory nature of the work, particularly the use of inductive, deductive and integrated approaches to both change implementation and project supervision. ? The programme was monitored throughout using different data sources and the paper uses evaluative material retrospectively to provide answers to organizational and professional difficulties which arose during the course of the programme. ? The authors conclude that the use of combinations of different models for practice development has potential, but requires careful supervision. ? They also recommend that those involved in practice development are made fully aware of its local or micropolitics, and develop strategies to deal with change before it occurs, not after it has taken place. 相似文献
7.
A E Koch J Kampen K Tetzlaff M Reuter P McCormack P W Schnoor N Struck L Heine I Prytulla H Rieckert 《Undersea & hyperbaric medicine》2004,31(2):261-268
BACKGROUND: To investigate incidence and number of abnormal cerebral hyperintensities (ACFs) in Magnet Resonance Imaging (MRI) and its relation to a patent foramen ovale (PFO) in divers with no history of decompression illness. METHODS: Cohort study on 50 divers (21-5500 dives). MAIN OUTCOME MEASURES: Incidence and number of ACFs visualized by cranial MRI and presence and size of a PFO as documented by echocardiography and transcranial Doppler ultrasound (TCD) with echocontrast. RESULTS: A total of 137 ACFs was found in the 50 subjects, with a significant correlation between the number of dives and number of ACFs (r = 0.28; p < 0.05); but after correction for age, the remaining correlation (r = 0.15) did not reach significance. In 18 divers, a PFO was present by either the application of echocardiography or TCD; in 12 divers, the PFO was of high hemodynamic relevance. Ten of 18 divers with a PFO had at least one ACF, while in the remaining 32 divers, only 14 had at least one ACF (56% versus 44%, p = NS). Seven of 14 divers (50%) with 4 ACFs had a PFO, compared to 11 of 36 (31%) with less than 4 ACFs (p = NS). CONCLUSION: In this cohort of healthy divers, in contrast to an earlier report, no significant association was found between PFO presence and incidence or number of ACFs. 相似文献
8.
9.
Rebecca M. Schwartz PhD Edmond S. Malka Michael Augenbraun Steven Rubin Matthew Hogben Nicole Liddon William M. McCormack Tracey E. Wilson 《Journal of urban health》2006,83(6):1095-1104
Efforts to control chlamydial and gonococcal infections include notifying eligible sexual partners of possible infection,
primarily by asking the diagnosed patient to notify their partners. This approach, known as patient referral, is widely used
but poorly understood. The current study examined psychosocial and cognitive factors associated with patient referral among
an urban, minority sample of 168 participants recently diagnosed with Chlamydia trachomatis or Neisseria gonorrhoeae. At a follow-up interview 1-month from diagnosis, participants were more likely to have notified all eligible partners if
they had greater intention to notify at baseline (OR = 3.72; 95% CI = 1.34, 10.30) and if they had only one partner at baseline
(OR = 4.08; 95% CI = 1.61, 10.31). There were also gender differences as well as differences based on type of partner (i.e.,
regular, casual, one-time). The implications of these findings for the design of programs to promote patient referral for
sexually transmitted infections are discussed.
Schwartz, Malka, Augenbraun, McCormack, and Wilson are with the State University of New York, Downstate Medical Center, Brooklyn,
NY, USA; Rubin is with the New York City Department of Health, Bureau of STD Control, New York, NY, USA; Rubin, Hogben, and
Liddon are with the Centers for Disease Control and Prevention, Atlanta, GA, USA; Schwartz is with the Department of Preventive
Medicine and Community Health, SUNY Downstate Medical Center, Box 1240, 450 Clarkson Avenue, Brooklyn, NY 11203, USA. 相似文献
10.
Brendan McCormack BSc DPSN PGCEA RGN RMN Clinical Lecturer in Nursing 《Journal of advanced nursing》1992,17(2):187-197
The research describes how nursing staff on a general surgical ward in a district general hospital perceived the delivery method of nursing care in practice. The study design was based on ethnographic methods and data were collected by diary keeping and semi-structured interviews. An organizational method based on the principles of primary nursing had been implemented on the ward for 2 years prior to the study commencing. As well as talking in general terms about primary nursing, the nursing staff talked at some length about specific issues related to their practice. 相似文献