全文获取类型
收费全文 | 1081篇 |
免费 | 56篇 |
国内免费 | 15篇 |
专业分类
耳鼻咽喉 | 3篇 |
儿科学 | 38篇 |
妇产科学 | 10篇 |
基础医学 | 118篇 |
口腔科学 | 8篇 |
临床医学 | 113篇 |
内科学 | 212篇 |
皮肤病学 | 9篇 |
神经病学 | 90篇 |
特种医学 | 152篇 |
外科学 | 104篇 |
综合类 | 44篇 |
预防医学 | 62篇 |
眼科学 | 32篇 |
药学 | 80篇 |
中国医学 | 1篇 |
肿瘤学 | 76篇 |
出版年
2022年 | 7篇 |
2021年 | 15篇 |
2020年 | 7篇 |
2019年 | 19篇 |
2018年 | 16篇 |
2017年 | 12篇 |
2016年 | 17篇 |
2015年 | 13篇 |
2014年 | 14篇 |
2013年 | 31篇 |
2012年 | 24篇 |
2011年 | 24篇 |
2010年 | 27篇 |
2009年 | 25篇 |
2008年 | 30篇 |
2007年 | 48篇 |
2006年 | 44篇 |
2005年 | 45篇 |
2004年 | 27篇 |
2003年 | 37篇 |
2002年 | 31篇 |
2001年 | 20篇 |
2000年 | 22篇 |
1999年 | 31篇 |
1998年 | 29篇 |
1997年 | 46篇 |
1996年 | 30篇 |
1995年 | 29篇 |
1994年 | 26篇 |
1993年 | 19篇 |
1992年 | 20篇 |
1991年 | 29篇 |
1990年 | 23篇 |
1989年 | 38篇 |
1988年 | 27篇 |
1987年 | 24篇 |
1986年 | 19篇 |
1985年 | 18篇 |
1984年 | 18篇 |
1983年 | 18篇 |
1982年 | 14篇 |
1981年 | 19篇 |
1980年 | 10篇 |
1979年 | 10篇 |
1978年 | 8篇 |
1977年 | 9篇 |
1976年 | 8篇 |
1974年 | 7篇 |
1973年 | 8篇 |
1972年 | 8篇 |
排序方式: 共有1152条查询结果,搜索用时 31 毫秒
1.
2.
3.
4.
杨兴旺 《眼外伤职业眼病杂志》1994,16(3):202-204
采用综合治疗,抗炎,散瞳,局部治疗与全身应用免疫抑制疗法,治疗319例352眼外伤获得了满意的疗效,眼球挫伤104例,眼球穿孔伤93例,化学烧伤71例,眼炸伤46例。眼热烧伤5例,治疗包括及时清创胶粘或缝合,清除前房出血合理用皮质类固醇和免疫抑制剂等。眼球挫伤治愈率97.12%,穿透伤93.18%,热烧伤66.67%。319例眼外伤治愈率94.67%好转5.33%,并对各种治疗方法进行了讨论。 相似文献
5.
Christopher D Wells Russell I Heigh Virender K Sharma Michael D Crowell Suryakanth R Gurudu Jonathan A Leighton Nora Mattek David E Fleischer 《BMC gastroenterology》2007,7(1):19
Background
Many factors impacting cecal intubation rates have been examined in detail; however, little information exists regarding the effect of the timing of the procedure. We sought to examine any difference in cecal intubation rates between morning and afternoon colonoscopies and identify factors contributing to a discrepancy. 相似文献6.
7.
Retrorenal colon: implications for percutaneous diskectomy 总被引:1,自引:0,他引:1
It has been recommended that computed tomography (CT) with the patient prone be performed in every patient undergoing percutaneous diskectomy; this would enable detection of a retrorenal location of the colon, which could interfere with the percutaneous procedure. In this evaluation of 346 prone CT studies, only one patient (0.29%) was found to have retrorenal or retropsoas bowel that would have been perforated at diskectomy. Because of this extremely low prevalence, the performance of prone CT in every patient undergoing percutaneous lumbar diskectomy is not believed to be necessary. 相似文献
8.
9.
The effect of eating on defecation behaviour was investigated in four 20-30 kg pigs. Rectal distention stimulation was performed pre- and postprandially at 10 cm from the anus with a 5 cm latex balloon. Volume was increased in steps of 10 ml up to 200 ml of air or until balloon defecation. Dependent measures were volume, rectal pressure, determined with a solid state pressure transducer inside the balloon probe, rectal compliance, and an index of distention induced contractile activity. The volume and pressure required to elicit defecation was significantly lower after feeding (p less than 0.01). Distention induced contractile activity was significantly increased near defecation threshold, but pre- and postprandial conditions were not different. There was no difference in rectal compliance pre- and postprandially. These results suggest that eating lowers defecation threshold in terms of distention volume and rectal pressure, and that these changes are not dependent on altered rectal compliance or changes in distention induced motor activity. 相似文献
10.
PL Macken FRACO FRACS CJ Pavlin FRCS R Tuli MD GE Trope PhD FRCS 《Clinical & experimental ophthalmology》1995,23(3):217-220
Background: Spherophakia is an uncommon diagnosis. This is the first case report of spherophakia evaluated by ultrasound biomicroscopy.
Methods: Ultrasound biomicroscopy is a new diagnostic technique developed by one of the authors and provides images with microscopic resolution of the anterior segment. A patient with spherophakia was evaluated by ultrasound biomicroscopy (Zeiss-Humphrey, 50MHz) before and after YAG laser iridotomy.
Results: Ultrasound biomicroscopic assessment revealed a shallow anterior chamber, a very steep anterior lens curvature, iridolenticular contact, elongated zonules, and an increased distance between the lens equator and the ciliary processes. Angle closure glaucoma was due to a pupil block mechanism. The pupil block was relieved by YAG laser iridotomy.
Conclusions: Ultrasound biomicroscopy is a useful technique to confirm the diagnosis of spherophakia. The pupil block in spherophakia is relieved by YAG laser iridotomy. 相似文献
Methods: Ultrasound biomicroscopy is a new diagnostic technique developed by one of the authors and provides images with microscopic resolution of the anterior segment. A patient with spherophakia was evaluated by ultrasound biomicroscopy (Zeiss-Humphrey, 50MHz) before and after YAG laser iridotomy.
Results: Ultrasound biomicroscopic assessment revealed a shallow anterior chamber, a very steep anterior lens curvature, iridolenticular contact, elongated zonules, and an increased distance between the lens equator and the ciliary processes. Angle closure glaucoma was due to a pupil block mechanism. The pupil block was relieved by YAG laser iridotomy.
Conclusions: Ultrasound biomicroscopy is a useful technique to confirm the diagnosis of spherophakia. The pupil block in spherophakia is relieved by YAG laser iridotomy. 相似文献