全文获取类型
收费全文 | 5729篇 |
免费 | 283篇 |
国内免费 | 13篇 |
专业分类
耳鼻咽喉 | 48篇 |
儿科学 | 220篇 |
妇产科学 | 99篇 |
基础医学 | 647篇 |
口腔科学 | 149篇 |
临床医学 | 456篇 |
内科学 | 987篇 |
皮肤病学 | 83篇 |
神经病学 | 407篇 |
特种医学 | 200篇 |
外科学 | 681篇 |
综合类 | 74篇 |
一般理论 | 5篇 |
预防医学 | 271篇 |
眼科学 | 217篇 |
药学 | 682篇 |
1篇 | |
中国医学 | 77篇 |
肿瘤学 | 721篇 |
出版年
2024年 | 5篇 |
2023年 | 27篇 |
2022年 | 90篇 |
2021年 | 200篇 |
2020年 | 99篇 |
2019年 | 134篇 |
2018年 | 174篇 |
2017年 | 112篇 |
2016年 | 148篇 |
2015年 | 199篇 |
2014年 | 228篇 |
2013年 | 331篇 |
2012年 | 503篇 |
2011年 | 474篇 |
2010年 | 257篇 |
2009年 | 255篇 |
2008年 | 362篇 |
2007年 | 367篇 |
2006年 | 346篇 |
2005年 | 352篇 |
2004年 | 307篇 |
2003年 | 266篇 |
2002年 | 214篇 |
2001年 | 57篇 |
2000年 | 59篇 |
1999年 | 54篇 |
1998年 | 47篇 |
1997年 | 23篇 |
1996年 | 33篇 |
1995年 | 35篇 |
1994年 | 27篇 |
1993年 | 30篇 |
1992年 | 29篇 |
1991年 | 27篇 |
1990年 | 13篇 |
1989年 | 15篇 |
1988年 | 9篇 |
1987年 | 6篇 |
1986年 | 5篇 |
1985年 | 10篇 |
1984年 | 13篇 |
1983年 | 8篇 |
1982年 | 10篇 |
1981年 | 10篇 |
1980年 | 11篇 |
1979年 | 6篇 |
1976年 | 4篇 |
1973年 | 3篇 |
1972年 | 3篇 |
1971年 | 5篇 |
排序方式: 共有6025条查询结果,搜索用时 15 毫秒
61.
Objective We investigated whether available epidemiological and toxicological data suggest an increased risk of mesothelioma among workers exposed to synthetic vitreous fibers (SVF). Methods We conducted a systematic review of epidemiological studies on the risk of mesothelioma among workers exposed to SVF, and toxicological studies on SVF and mesothelioma. Results Seven cohort studies were conducted among workers employed in production of rock/slag wool, glass wool, or continuous glass filament in the United States, Canada, and Europe. Of the six deaths from mesothelioma identified in these studies, three had exposure to asbestos. A review of death certificates in a study of rock wool production workers identified one additional probable death. A formal comparison with expected deaths is not feasible. Four community-based case–control studies were identified, of which three reported an increased risk among SVF-exposed workers. The number of cases not exposed to asbestos was less, and residual confounding from asbestos exposure misclassification may explain the association in these studies. The toxicology review of SVF suggested that they present a low hazard mostly due to their low biopersistence, typically with a half-life in rat studies of tens of days compared to amphibole asbestos which has a half-life of 400–500 days. Conclusions The combined evidence from epidemiology and toxicology provide little evidence that exposure to SVF increases the risk of mesothelioma. 相似文献
62.
63.
64.
Parasitology Research - Blastocystis sp. is known to be the most commonly found intestinal protozoan parasite in human fecal surveys and has been incriminated to cause diarrhea and abdominal... 相似文献
65.
66.
67.
68.
69.
70.
Gunjan Pruthi Veena Jain Suresh Rajendiran Ritu Jha 《Indian journal of ophthalmology》2014,62(5):629-632
Orbital exenteration is executed by the ophthalmic surgeon to treat various neoplasms or non-malignant diseases. But it leads to several functional, esthetic and psychological problems for the patients. Orbital prosthesis is a good alternative for cosmetic and psychological rehabilitation, if reconstructive surgery is not possible or not desired by the patient. In the following article, different materials and retentive aids for fabrication of an orbital prosthesis given in the literature along with few novel methods have been discussed for four patients who underwent orbital exenteration. Factors that an ophthalmic surgeon should consider during surgery, which may later on help the prosthodontist to obtain good cosmetic results, are also discussed briefly. Remarkable results can be obtained if both work as a team for one common goal i.e. improvement of quality of life of the patient after orbital exenteration. 相似文献