全文获取类型
收费全文 | 3879篇 |
免费 | 215篇 |
国内免费 | 7篇 |
专业分类
耳鼻咽喉 | 37篇 |
儿科学 | 123篇 |
妇产科学 | 33篇 |
基础医学 | 337篇 |
口腔科学 | 100篇 |
临床医学 | 298篇 |
内科学 | 933篇 |
皮肤病学 | 110篇 |
神经病学 | 257篇 |
特种医学 | 139篇 |
外科学 | 797篇 |
综合类 | 77篇 |
一般理论 | 1篇 |
预防医学 | 132篇 |
眼科学 | 159篇 |
药学 | 271篇 |
中国医学 | 7篇 |
肿瘤学 | 290篇 |
出版年
2024年 | 2篇 |
2023年 | 44篇 |
2022年 | 97篇 |
2021年 | 212篇 |
2020年 | 81篇 |
2019年 | 131篇 |
2018年 | 161篇 |
2017年 | 127篇 |
2016年 | 138篇 |
2015年 | 145篇 |
2014年 | 203篇 |
2013年 | 248篇 |
2012年 | 343篇 |
2011年 | 356篇 |
2010年 | 209篇 |
2009年 | 180篇 |
2008年 | 236篇 |
2007年 | 227篇 |
2006年 | 158篇 |
2005年 | 198篇 |
2004年 | 172篇 |
2003年 | 140篇 |
2002年 | 118篇 |
2001年 | 35篇 |
2000年 | 16篇 |
1999年 | 17篇 |
1998年 | 23篇 |
1997年 | 11篇 |
1996年 | 10篇 |
1995年 | 12篇 |
1994年 | 11篇 |
1993年 | 7篇 |
1992年 | 6篇 |
1991年 | 8篇 |
1990年 | 5篇 |
1989年 | 6篇 |
1988年 | 4篇 |
1987年 | 1篇 |
1986年 | 1篇 |
1979年 | 1篇 |
1970年 | 1篇 |
排序方式: 共有4101条查询结果,搜索用时 15 毫秒
81.
Mudit Tyagi Subhakar Reddy Sayan Basu Rajeev R Pappuru Vivek P Dave 《Indian journal of ophthalmology》2021,69(2):423
Purpose:Deeply embedded corneal foreign bodies and intrastromal foreign body removal can often be a challenge. The aim of this report was to describe the utility of endoscopy in visualization and removal of an embedded corneal bee stinger.Methods:A 44-year-old male patient developed toxic keratopathy after injury from a bee stinger. On examination, the bee stinger was noted to be deeply embedded in the corneal stroma. A superficial keratectomy was initially attempted; however, the stinger was noted to be intrastromal and protruding into the anterior chamber and could not be removed. An Endoscopy-assisted visualization was used to remove the stinger.Results:The bee stinger was successfully removed and the patient''s vision improved to 20/100 from an initial CFCF (counting fingers close to face) at time of presentation. At the end of 3 months follow-up, there was residual corneal edema along with cataractous changes in the lens as a sequelae of the initial bee sting injury. The patient subsequently underwent an endothelial keratoplasty along with phacoemulsification with intraocular lens implantation and the final BCVA improved to 20/40.Conclusion:Endoscopyassisted visualisation of anterior chamber and angle structures can be valuable in removal of retained and deeply embedded corneal or intracameral foreign bodies. 相似文献
82.
83.
Gumaste VV 《Clinical gastroenterology and hepatology》2012,10(6):685-6; author reply 686-7
84.
85.
86.
87.
88.
The focusing response of the human eye — accommodation — exhibits errors known as lags and leads. Lags occur when the stimulus is near and the eye appears to focus farther than the stimulus. Leads occur with far stimuli where the eye appears to focus nearer than the stimulus. We used objective and subjective measures simultaneously to determine where the eye is best focused. The objective measures were made with a wavefront sensor and an autorefractor, both of which analyze light reflected from the retina. These measures exhibited typical accommodative errors, mostly lags. The subjective measure was visual acuity, which of course depends not only on the eye''s optics but also on photoreception and neural processing of the retinal image. The subjective measure revealed much smaller errors. Acuity was maximized at or very close to the distance of the accommodative stimulus. Thus, accommodation is accurate in terms of maximizing visual performance. 相似文献
89.
Sudipta Saha Manoj Andley Vivek Gautam Saurabh Gyan Ashok Kumar Ajay Kumar 《Indian Journal of Thoracic and Cardiovascular Surgery》2013,29(2):140-142
Carcinosarcoma of esophagus contains both the carcinomatous and sarcomatous elements. These are rare polypoidal malignancies of esophagus. One such case is presented and available literature is reviewed. 相似文献
90.
Sanjay Meena Vivek Trikha Pramod Saini Rakesh Kumar Buddhadev Chowdhary 《中华创伤杂志(英文版)》2013,16(4):243-245
Intramedullary interlocking nailing is the gold standard for treatment of tibial shaft fractures.The growing use of intramedullary nailing has resulted in an increased number of tibial nailing in daily... 相似文献