全文获取类型
收费全文 | 1973篇 |
免费 | 165篇 |
专业分类
耳鼻咽喉 | 9篇 |
儿科学 | 77篇 |
妇产科学 | 49篇 |
基础医学 | 195篇 |
口腔科学 | 20篇 |
临床医学 | 191篇 |
内科学 | 459篇 |
皮肤病学 | 10篇 |
神经病学 | 219篇 |
特种医学 | 85篇 |
外科学 | 161篇 |
综合类 | 28篇 |
一般理论 | 117篇 |
预防医学 | 267篇 |
眼科学 | 52篇 |
药学 | 106篇 |
肿瘤学 | 93篇 |
出版年
2023年 | 16篇 |
2022年 | 29篇 |
2021年 | 41篇 |
2020年 | 18篇 |
2019年 | 33篇 |
2018年 | 37篇 |
2017年 | 36篇 |
2016年 | 26篇 |
2015年 | 29篇 |
2014年 | 37篇 |
2013年 | 57篇 |
2012年 | 71篇 |
2011年 | 98篇 |
2010年 | 59篇 |
2009年 | 53篇 |
2008年 | 95篇 |
2007年 | 66篇 |
2006年 | 70篇 |
2005年 | 74篇 |
2004年 | 75篇 |
2003年 | 63篇 |
2002年 | 53篇 |
2001年 | 55篇 |
2000年 | 74篇 |
1999年 | 62篇 |
1998年 | 21篇 |
1997年 | 22篇 |
1996年 | 30篇 |
1995年 | 26篇 |
1994年 | 23篇 |
1993年 | 24篇 |
1992年 | 52篇 |
1991年 | 53篇 |
1990年 | 53篇 |
1989年 | 60篇 |
1988年 | 44篇 |
1987年 | 41篇 |
1986年 | 50篇 |
1985年 | 47篇 |
1984年 | 24篇 |
1983年 | 17篇 |
1982年 | 22篇 |
1981年 | 15篇 |
1980年 | 15篇 |
1979年 | 18篇 |
1977年 | 16篇 |
1976年 | 18篇 |
1975年 | 17篇 |
1967年 | 13篇 |
1966年 | 17篇 |
排序方式: 共有2138条查询结果,搜索用时 140 毫秒
981.
982.
983.
984.
John Adam Reich Monica E. Goodstein Susan E. Callahan Kathleen M. Callahan Lindsay W. Crossley Shira I. Doron David R. Snydman Stanley A. Nasraway Jr 《Critical care (London, England)》2015,19(1)
IntroductionHand hygiene is an effective, low-cost intervention that prevents the spread of multidrug-resistant bacteria. Despite mandatory education and reminders, compliance by physicians in our hospital remained stubbornly low. Our objective was to study whether surveillance by our unit coordinator (secretary) paired with regular feedback to chiefs of service would increase physician hand hygiene compliance in the ICU.MethodThe ICU unit coordinator was trained to observe and measure hand hygiene compliance. Data were collected on hand hygiene compliance at room entry and exit for 9 months. Percentage compliance for each medical and surgical subspecialty was reported to chiefs of service at the end of each month. Comparative rankings by service were widely distributed throughout the physician organization and the medical center.ResultsThe hand hygiene compliance rate among physicians increased from 65.1 % to 91.6 % during the study period (p <0.0001). More importantly in the succeeding 24 months after study completion, physician hand hygiene compliance remained >90 % in every month.ConclusionsPhysician hand hygiene compliance increased as a consequence of the surveillance conducted by a full-time ICU team member, leading to a highly significant increase in the number of observations. In turn, this allowed for specific comparative monthly feedback to individual chiefs of service. Over the next 2 years after the study ended, these gains were sustained, suggesting an enduring culture change in physician behavior. 相似文献
985.
The onslaught of foreign antigens carried by spermatozoa into the epididymis, an organ that has not demonstrated immune privilege, a decade or more after the establishment of central immune tolerance presents a unique biological challenge. Historically, the physical confinement of spermatozoa to the epididymal tubule enforced by a tightly interwoven wall of epithelial cells was considered sufficient enough to prevent cross talk between gametes and the immune system and, ultimately, autoimmune destruction. The discovery of an intricate arrangement of mononuclear phagocytes (MPs) comprising dendritic cells and macrophages in the murine epididymis suggests that we may have underestimated the existence of a sophisticated mucosal immune system in the posttesticular environment. This review consolidates our current knowledge of the physiology of MPs in the steady state epididymis and speculates on possible interactions between auto-antigenic spermatozoa, pathogens and the immune system by drawing on what is known about the immune system in the intestinal mucosa. Ultimately, further investigation will provide valuable information regarding the origins of pathologies arising as a result of autoimmune or inflammatory responses in the epididymis, including epididymitis and infertility. 相似文献
986.
987.
988.
989.
Pediatric providers can expect that 1 of every 10 patients they see will have a chronic, activity-limiting health condition. Thanks to earlier diagnosis and improved therapies, most of these children will live well into adulthood. This means that eventually they will require care that focuses on adult health issues. Providers in the United States and around the world are recognizing the need for coordinated processes to transition adolescents and young adults with chronic conditions to adult health care. These models rely on the participation and input of the adolescent, his or her family, and pediatric and adult health professionals. This paper distinguishes medical transition from medical transfer; discusses potential barriers to transition; examines new initiatives to develop and study transition models; and reviews federal legislation influencing health care transitions. 相似文献
990.