全文获取类型
收费全文 | 2921593篇 |
免费 | 209397篇 |
国内免费 | 4907篇 |
专业分类
耳鼻咽喉 | 41028篇 |
儿科学 | 94230篇 |
妇产科学 | 80179篇 |
基础医学 | 426863篇 |
口腔科学 | 80621篇 |
临床医学 | 260958篇 |
内科学 | 566071篇 |
皮肤病学 | 63942篇 |
神经病学 | 230984篇 |
特种医学 | 110768篇 |
外国民族医学 | 801篇 |
外科学 | 443577篇 |
综合类 | 61689篇 |
现状与发展 | 12篇 |
一般理论 | 1054篇 |
预防医学 | 225925篇 |
眼科学 | 68393篇 |
药学 | 216186篇 |
11篇 | |
中国医学 | 5775篇 |
肿瘤学 | 156830篇 |
出版年
2019年 | 23435篇 |
2018年 | 32306篇 |
2017年 | 24577篇 |
2016年 | 27314篇 |
2015年 | 30848篇 |
2014年 | 43673篇 |
2013年 | 65818篇 |
2012年 | 90092篇 |
2011年 | 95942篇 |
2010年 | 57334篇 |
2009年 | 54164篇 |
2008年 | 90457篇 |
2007年 | 96175篇 |
2006年 | 97290篇 |
2005年 | 94495篇 |
2004年 | 90384篇 |
2003年 | 87170篇 |
2002年 | 84905篇 |
2001年 | 131574篇 |
2000年 | 135018篇 |
1999年 | 114009篇 |
1998年 | 33064篇 |
1997年 | 29316篇 |
1996年 | 29490篇 |
1995年 | 27706篇 |
1994年 | 25668篇 |
1993年 | 24228篇 |
1992年 | 88766篇 |
1991年 | 86170篇 |
1990年 | 84396篇 |
1989年 | 81265篇 |
1988年 | 74910篇 |
1987年 | 73658篇 |
1986年 | 69354篇 |
1985年 | 66412篇 |
1984年 | 49638篇 |
1983年 | 42331篇 |
1982年 | 25307篇 |
1979年 | 45826篇 |
1978年 | 32651篇 |
1977年 | 27233篇 |
1976年 | 25983篇 |
1975年 | 28106篇 |
1974年 | 33870篇 |
1973年 | 32361篇 |
1972年 | 30348篇 |
1971年 | 28565篇 |
1970年 | 26634篇 |
1969年 | 25228篇 |
1968年 | 23415篇 |
排序方式: 共有10000条查询结果,搜索用时 9 毫秒
81.
We report a case of intestinal obstruction in a 73-year-old woman caused by ileocolic intussusception. The underlying cause was a giant submucosal ulcerating lipoma (6?×?3.3?×?3.8 cm) extending from the superior mucosal lip of Bauhin’s valve. Abdominal ultrasonography showed a pathognomonic target-like mass appearing as multiple concentric rings. CT scan confirmed the diagnosis. Because of apparent obstruction, a laparotomy with right hemicolectomy and ileocolic anastomosis was performed. Lipomas most frequently occur in the cecum and ascending colon where they represent the most common submucosal mesenchymal tumor. They typically occur in elderly women with an incidence that varies from 0.15 to 0.56 %. Pain, rectal bleeding, and obstruction are typical symptoms. When faced with an intussusception in children, reduction with air per rectum can be performed. In adults, however, malignant cell spreading and seeding is of big concern. Since approximately 20–50 % of all underlying causes are malignant, explorative surgery is favored in adults. 相似文献
82.
83.
84.
85.
86.
87.
88.
Katherine Quinn Julia Dickson-Gomez Jeffrey A. Kelly 《Culture, health & sexuality》2016,18(5):524-537
In the USA, the Black Church is among the most important institutions in the Black community, offering numerous spiritual, social and health benefits. Yet, the presence of homonegativity in many Black Churches may mitigate those effects for gay Black youth. This research examines the role of the Church in the lives of gay and bisexual Black youth to understand how they reconcile any tension between their religious and sexual identities. Through interviews with pastors of Black churches (n = 21) and young Black men who have sex with men (n = 30), we explored homonegativity and young men’s experiences within the Black Church. Findings reveal that despite the prevalence of homonegativity within Black churches, religious involvement remains important for young men and many remain involved in non-affirming churches. The importance of the Church for young men stems from their significant involvement as youth and the integration of religion, family and community. Young men may not be able to leave their religious homes as readily as other gay youth given the cultural relevance of the Church. As a result, young men made attempts to conceal their sexuality in church to avoid shame and gossip and find opportunities to balance their sexuality and religiosity. 相似文献
89.
Elissa A. Adame Ryan S. Bisel Edward S. Kosik Julia A. Rygaard 《Health communication》2019,34(6):638-643
An essential piece of anesthesiologist training is attending resident feedback sessions. Yet, few attending anesthesiologists have formal teaching education and little time to acquire it. In this field experiment, attending physicians were randomly assigned to a control group or to receive 30 minutes of feedback training inspired by Implicit Person Theory (IPT). As such, IPT training encouraged physicians to praise process-oriented learning while discouraging performance-oriented mindsets. Attending physicians then observed residents participate in a human patient simulation (HPS) activity and provided residents with feedback. Content and statistical analyses revealed trained attending physicians praised learning goals and challenged performance goals more often than untrained physicians during feedback sessions. Thus, the training provides a rapid method of enhancing the quality of attending physicians’ training communication. 相似文献
90.
Accuracy and Precision of Acetabular Component Placement With Imageless Navigation in Obese Patients
Leonard T. Buller Alexander S. McLawhorn Jose A. Romero Peter K. Sculco David J. Mayman 《The Journal of arthroplasty》2019,34(4):693-699