全文获取类型
收费全文 | 8684篇 |
免费 | 571篇 |
国内免费 | 48篇 |
专业分类
耳鼻咽喉 | 122篇 |
儿科学 | 332篇 |
妇产科学 | 177篇 |
基础医学 | 1033篇 |
口腔科学 | 282篇 |
临床医学 | 885篇 |
内科学 | 1746篇 |
皮肤病学 | 116篇 |
神经病学 | 821篇 |
特种医学 | 597篇 |
外国民族医学 | 1篇 |
外科学 | 1092篇 |
综合类 | 131篇 |
一般理论 | 2篇 |
预防医学 | 818篇 |
眼科学 | 140篇 |
药学 | 543篇 |
中国医学 | 4篇 |
肿瘤学 | 461篇 |
出版年
2021年 | 91篇 |
2020年 | 62篇 |
2019年 | 116篇 |
2018年 | 151篇 |
2017年 | 105篇 |
2016年 | 124篇 |
2015年 | 149篇 |
2014年 | 158篇 |
2013年 | 299篇 |
2012年 | 407篇 |
2011年 | 416篇 |
2010年 | 282篇 |
2009年 | 268篇 |
2008年 | 371篇 |
2007年 | 376篇 |
2006年 | 381篇 |
2005年 | 400篇 |
2004年 | 309篇 |
2003年 | 284篇 |
2002年 | 280篇 |
2001年 | 294篇 |
2000年 | 290篇 |
1999年 | 211篇 |
1998年 | 117篇 |
1997年 | 110篇 |
1996年 | 109篇 |
1995年 | 78篇 |
1994年 | 102篇 |
1993年 | 94篇 |
1992年 | 159篇 |
1991年 | 170篇 |
1990年 | 173篇 |
1989年 | 172篇 |
1988年 | 166篇 |
1987年 | 163篇 |
1986年 | 143篇 |
1985年 | 197篇 |
1984年 | 115篇 |
1983年 | 107篇 |
1982年 | 61篇 |
1981年 | 74篇 |
1980年 | 69篇 |
1979年 | 110篇 |
1978年 | 77篇 |
1977年 | 62篇 |
1976年 | 62篇 |
1975年 | 59篇 |
1974年 | 60篇 |
1973年 | 56篇 |
1972年 | 54篇 |
排序方式: 共有9303条查询结果,搜索用时 8 毫秒
1.
2.
Arjenne H.M. Gussenhoven Amika S. Singh S. Theo Goverts Marten van Til Johannes R. Anema Sophia E. Kramer 《International journal of audiology》2015,54(8):507-517
Objective: A multidisciplinary vocational rehabilitation programme, the Vocational Enablement Protocol (VEP) was developed to address the specific needs of employees with hearing difficulties. In the current study we evaluated the process of implementing the VEP in audiologic care among employees with hearing impairment. Design: In conjunction with a randomized controlled trial, we collected and analysed data on seven process parameters: recruitment, reach, fidelity, dose delivered, dose received and implemented, satisfaction, and perceived benefit. Study sample: Sixty-six employees with hearing impairment participated in the VEP. The multidisciplinary team providing the VEP comprised six professionals. Results: The professionals performed the VEP according to the protocol. Of the recommendations delivered by the professionals, 31% were perceived as implemented by the employees. Compliance rate was highest for hearing-aid uptake (51%). Both employees and professionals were highly satisfied with the VEP. Participants rated good perceived benefit from it. Conclusions: Our results indicate that the VEP could be a useful treatment for employees with hearing difficulties from a process evaluation perspective. Implementation research in the audiological setting should be encouraged in order to further provide insight into parameters facilitating or hindering successful implementation of an intervention and to improve its quality and efficacy. 相似文献
3.
4.
5.
6.
7.
8.
9.
10.
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