全文获取类型
收费全文 | 948篇 |
免费 | 67篇 |
国内免费 | 2篇 |
专业分类
1017篇 |
出版年
2023年 | 8篇 |
2022年 | 6篇 |
2021年 | 6篇 |
2020年 | 17篇 |
2019年 | 20篇 |
2018年 | 37篇 |
2017年 | 41篇 |
2016年 | 41篇 |
2015年 | 22篇 |
2014年 | 37篇 |
2013年 | 105篇 |
2012年 | 55篇 |
2011年 | 45篇 |
2010年 | 34篇 |
2009年 | 35篇 |
2008年 | 44篇 |
2007年 | 55篇 |
2006年 | 45篇 |
2005年 | 33篇 |
2004年 | 41篇 |
2003年 | 32篇 |
2002年 | 32篇 |
2001年 | 13篇 |
2000年 | 19篇 |
1999年 | 19篇 |
1998年 | 10篇 |
1997年 | 12篇 |
1996年 | 6篇 |
1995年 | 10篇 |
1994年 | 7篇 |
1993年 | 9篇 |
1992年 | 10篇 |
1991年 | 7篇 |
1990年 | 8篇 |
1989年 | 6篇 |
1988年 | 8篇 |
1987年 | 6篇 |
1986年 | 7篇 |
1985年 | 7篇 |
1984年 | 6篇 |
1983年 | 9篇 |
1982年 | 8篇 |
1981年 | 6篇 |
1980年 | 3篇 |
1979年 | 7篇 |
1976年 | 3篇 |
1975年 | 3篇 |
1973年 | 5篇 |
1972年 | 2篇 |
1969年 | 2篇 |
排序方式: 共有1017条查询结果,搜索用时 15 毫秒
991.
992.
993.
994.
Tim Lethen 《逻辑史和逻辑哲学》2020,41(3):252-264
In 1935/1936 Kurt Gödel wrote three notebooks on the foundations of quantum mechanics, which have now been entirely transcribed for the first time. Whereas a lot of the material is rather technical in character, many of Gödel's remarks have a philosophical background and concentrate on Leibnizian monadology as well as on vitalism. Obviously influenced by the vitalistic writings of Hans Driesch and his ‘proofs’ for the existence of an entelechy in every living organism, Gödel briefly develops the idea of a computing machine which closely resembles Turing's groundbreaking conception. After introducing the notebooks on quantum mechanics, this article describes Gödel's vitalistic Weltbild and the ideas leading to the development of his computing machine. It investigates a notion of lawlike sequence which closely resembles Turing's concept of a computable number and which Gödel himself calls ‘problematic’, and compares it to the opposed concept of randomness, drawing upon the notion of program-size complexity. Finally, Gödel's machine is implemented in a dialect of the Lisp programing language. 相似文献
995.
Lian Elfering Tim C. van de Grift Mark-Bram Bouman Norah M. van Mello Freek A. Groenman Judith A. Huirne 《International Journal of Transgenderism》2020,21(2):138-146
AbstractBackground: Masculinizing mastectomy is the most requested gender affirming surgery (GAS) in trans men, followed by genital GAS. Mastectomy and total laparoscopic hysterectomy, with or without bilateral salpingo-oophorectomy (TLH?±?BSO), can both be performed in one single operation session. However, data on complication rates of the combined procedure is scarce and no consensus exists on the preferred order of procedures.Aims: To compare safety outcomes between mastectomy performed in a single procedure with those when performed in a combined procedure and assess whether the order of procedures matters when they are combined.Methods: A retrospective chart review was performed of trans men who underwent masculinizing mastectomy with or without TLH?±?BSO in a combined session. The effects of the surgical procedure on complication and reoperation rate of the chest were assessed using logistic regression.Results: In total, 480 trans men were included in the study. Of these, 212 patients underwent the combined procedure. The gynecological procedure was performed first in 152 (71.7%) patients. In the total sample, postoperative hematoma of the chest occurred in 11.3%; 16% in the combined versus 7.5% in the single mastectomy group (p?=?0.001). Reoperations due to hematoma of the chest were performed in 7.5% of all patients; 10.8% in the combined versus 4.9% in the single mastectomy group (p?=?0.017). The order of procedures in the combined group had no significant effect on postoperative hematoma of the chest (p?=?0.856), and reoperations (p?=?0.689).Conclusion: Combining masculinizing mastectomy with TLH?±?BSO in one session was associated with significantly more hematoma and reoperations compared with separately performing mastectomy. This increased risk of complications after a combined procedure should be considered when deciding on surgical options. The order of procedures in a combined procedure did not have an effect on safety outcomes. 相似文献
996.
997.
998.
999.
1000.