全文获取类型
收费全文 | 197501篇 |
免费 | 3333篇 |
国内免费 | 105篇 |
专业分类
耳鼻咽喉 | 1312篇 |
儿科学 | 7483篇 |
妇产科学 | 3634篇 |
基础医学 | 19688篇 |
口腔科学 | 1887篇 |
临床医学 | 15642篇 |
内科学 | 35555篇 |
皮肤病学 | 1223篇 |
神经病学 | 18756篇 |
特种医学 | 9400篇 |
外国民族医学 | 4篇 |
外科学 | 30893篇 |
综合类 | 2510篇 |
一般理论 | 5篇 |
预防医学 | 20302篇 |
眼科学 | 3013篇 |
药学 | 10919篇 |
中国医学 | 642篇 |
肿瘤学 | 18071篇 |
出版年
2023年 | 244篇 |
2022年 | 378篇 |
2021年 | 763篇 |
2020年 | 609篇 |
2019年 | 927篇 |
2018年 | 22816篇 |
2017年 | 18057篇 |
2016年 | 20228篇 |
2015年 | 1756篇 |
2014年 | 1821篇 |
2013年 | 2162篇 |
2012年 | 8694篇 |
2011年 | 22587篇 |
2010年 | 19800篇 |
2009年 | 12428篇 |
2008年 | 20832篇 |
2007年 | 22999篇 |
2006年 | 1820篇 |
2005年 | 3357篇 |
2004年 | 4486篇 |
2003年 | 5336篇 |
2002年 | 3409篇 |
2001年 | 467篇 |
2000年 | 589篇 |
1999年 | 364篇 |
1998年 | 430篇 |
1997年 | 384篇 |
1996年 | 231篇 |
1995年 | 243篇 |
1994年 | 218篇 |
1993年 | 163篇 |
1992年 | 117篇 |
1991年 | 171篇 |
1990年 | 206篇 |
1989年 | 148篇 |
1988年 | 116篇 |
1987年 | 85篇 |
1986年 | 85篇 |
1985年 | 84篇 |
1984年 | 79篇 |
1983年 | 81篇 |
1982年 | 93篇 |
1981年 | 69篇 |
1980年 | 80篇 |
1977年 | 45篇 |
1976年 | 58篇 |
1974年 | 57篇 |
1938年 | 64篇 |
1932年 | 57篇 |
1930年 | 46篇 |
排序方式: 共有10000条查询结果,搜索用时 113 毫秒
11.
12.
Pilar Nicolás 《Hereditary cancer in clinical practice》2007,5(3):144-152
The specific characteristics of genetic data lead to ethical-legal conflicts in the framework of genetic diagnosis. Several international organisations, including UNESCO and the Council of Europe, have enacted rules referring to the use of genetic information. This paper discusses possible legal and ethical criteria that could be used in genetic testing. 相似文献
13.
14.
15.
Marie Maguire 《British Journal of Psychotherapy》2005,22(1):3-20
ABSTRACT I explore a bisexual male patient's need to differentiate highly problematic'feminine'identifications - originating in childhood sexual abuse and impingement by men as well as women - from identifications with more admired aspects of his mother. My main focus is on the patient's sexual identity - the personal meaning he gave to being male - rather than on his bisexuality - his desire for both sexes. In psychoanalytic literature powerful opposite-sex identifications are usually associated either with psychotic confusion or celebrated as a source of psychic strength. The co-existence of problematic and highly valued cross-sex identifications is rarely discussed. I also look at how this patient re-negotiated his identity through the transference relationship with a female psychotherapist, given that his'masculinity'derived mainly from childhood experiences of 'stealing'his mother's phallic power. Through a wideranging theoretical review I conclude that we need to draw together opposing psychoanalytic perspectives about maternal and paternal power, opening up new ways of thinking about triangular relationships in the transference. 相似文献
16.
Jean Marie Jully Marie Christine Béné Gérard Martin Gilbert Faure 《Journal of clinical periodontology》1986,13(3):223-227
The cellular infiltrate present in human diseased gingiva was analyzed in biopsies from 12 patients with gingivitis or periodontitis. The samples studied had been obtained in the course of surgery at inflammatory sites remaining after institution of periodontal treatment. Histological and immunological techniques were used to identify macrophages, B-cells, plasma-cells, T-cells and T cell subsets, as well as cells expressing class II HLA membrane antigens. T-cells appeared as the predominant population, but plasma-cells were also visualized in nearly all samples. Both OKT4+ and OKT8+ cells were seen in all cases, the latter being more numerous in periodontitis patients. Interdigitating-like cells were observed, positively labelled for class II antigens, as well as macrophages which were more numerous in periodontitis patients. These results suggest the participation of all components of the immune response in gingival disease, in a way resembling chronic recurrent inflammatory diseases. 相似文献
17.
Henry Cisneros 《AIDS and behavior》2007,11(2):7-8
For persons battling HIV/AIDS a stable place to live may decide the length and quality of life itself. It is nearly impossible for a person on the streets to engage in a needed continuous AIDS treatment regimen when the very basic question of where that person will rest his or her head when darkness comes in just a few hours is unresolved. When danger lurks on the streets, when cold numbs the limbs, when tiredness overwhelms the mind, when fear breaks the spirit, a place to call home would make all the difference. 相似文献
18.
19.
20.