全文获取类型
收费全文 | 2917篇 |
免费 | 141篇 |
国内免费 | 56篇 |
专业分类
耳鼻咽喉 | 55篇 |
儿科学 | 17篇 |
妇产科学 | 87篇 |
基础医学 | 155篇 |
口腔科学 | 134篇 |
临床医学 | 234篇 |
内科学 | 124篇 |
皮肤病学 | 39篇 |
神经病学 | 40篇 |
特种医学 | 94篇 |
外国民族医学 | 1篇 |
外科学 | 977篇 |
综合类 | 490篇 |
预防医学 | 95篇 |
眼科学 | 313篇 |
药学 | 173篇 |
4篇 | |
中国医学 | 46篇 |
肿瘤学 | 36篇 |
出版年
2024年 | 28篇 |
2023年 | 82篇 |
2022年 | 92篇 |
2021年 | 125篇 |
2020年 | 119篇 |
2019年 | 113篇 |
2018年 | 91篇 |
2017年 | 112篇 |
2016年 | 91篇 |
2015年 | 107篇 |
2014年 | 268篇 |
2013年 | 229篇 |
2012年 | 182篇 |
2011年 | 246篇 |
2010年 | 177篇 |
2009年 | 156篇 |
2008年 | 104篇 |
2007年 | 114篇 |
2006年 | 95篇 |
2005年 | 83篇 |
2004年 | 76篇 |
2003年 | 50篇 |
2002年 | 32篇 |
2001年 | 32篇 |
2000年 | 26篇 |
1999年 | 33篇 |
1998年 | 23篇 |
1997年 | 31篇 |
1996年 | 14篇 |
1995年 | 21篇 |
1994年 | 19篇 |
1993年 | 17篇 |
1992年 | 21篇 |
1991年 | 7篇 |
1990年 | 8篇 |
1989年 | 4篇 |
1988年 | 10篇 |
1987年 | 12篇 |
1986年 | 13篇 |
1985年 | 10篇 |
1984年 | 7篇 |
1983年 | 5篇 |
1982年 | 4篇 |
1981年 | 6篇 |
1980年 | 5篇 |
1979年 | 4篇 |
1977年 | 4篇 |
1976年 | 5篇 |
1974年 | 1篇 |
排序方式: 共有3114条查询结果,搜索用时 15 毫秒
1.
2.
经穹隆结膜入路埋线法重睑成形术应用探讨 总被引:1,自引:0,他引:1
目的:通过分析重睑形成原理,综合比较多种重睑成形的方法,讨论埋线法重睑成形术的优点和可行性。方法:对387例患者行经穹隆结膜入路间断缝合埋线法重睑术。其中88例为其他方法埋线后重睑线消失的患者。结果:手术方法可靠,术后所形成的重睑外形良好,重睑维持时间长。最长随访时间38个月。结论:此方法因符合重睑形成原理,可以充分的将较多的上睑提肌腱膜与上睑皮肤结扎固定、故术后所形成的重睑牢固。且在直视下经穹隆结膜入路,降低了对眼球组织损伤的危险性。是埋线法重睑成形术一种可靠的手术方法。 相似文献
3.
微小切口双重荷包缝合法矫正重度乳头内陷 总被引:7,自引:0,他引:7
目的 介绍一种疗效确切,创伤小,矫正重度乳头内陷的新术式.方法 设计切口位于乳晕第四象限,方向斜向外下方,呈放射状切口,长约1.5 cm,松解乳头基底部,切断牵拉的纤维条索,上提乳头,在距乳头0.8cm和1.5cm处,双重荷包缝合固定.结果 12例乳头内陷患者术后随访1个月至4年,均获得满意疗效.乳头横径、纵径、高度及外观明显改善.结论 该术式矫正乳头内陷具有切口小、创伤轻微、操作简单易行、效果确切、不易复发和并发症少等优点. 相似文献
4.
对常用的4种角膜缝线进行细菌的吸附试验和虹吸试验。结装发现3-0黑丝线吸附细菌最多,10-0尼龙线吸附细菌最少。3-0和5-0黑丝线对细菌虹吸试验阳性,9-0和10-0尼龙线虹吸试验阴性。试验证明,10-0尼龙线是角膜手术较理想的缝线。 相似文献
5.
In cases of displaced greater tuberosity fractures, treatments by arthroscopic-assisted reduction and percutaneous screw fixation have been reported. However, in cases in which there is a comminuted fracture or a minimally displaced fracture combined with concomitant lesions such as rotator cuff tear or labral pathology, it is difficult to reduce the fracture and to treat other pathologies by use of a percutaneous screw. Recently, many surgeons have used the double-row repair method in rotator cuff repair, which provides a tendon-bone interface better suited for biologic healing and restoring normal anatomy. In accordance with this method, we used the arthroscopic technique of double-row suture anchor fixation for a minimally displaced greater tuberosity fracture without additional incision. Initially, debridement was performed on the fracture surface by use of a shaver, and the medial-row anchor was inserted through the anterior portal or the intact cuff. Two lateral-row anchors were inserted just anterior and posterior to the lower margin of the fractured fragment under C-arm guidance. The medial-row sutures and lateral-row sutures were then placed. Arthroscopic double-row suture anchor fixation of a displaced greater tuberosity fracture restores the original footprint of the rotator cuff and normal tendon-bone interface of the displaced greater tuberosity fracture. 相似文献
6.
目的介绍一种较新的矫治鹰钩鼻鼻尖畸形的手术方法。方法自1995年2月至2005年5月,采用埋没导引缝合技术对18例鹰钩鼻鼻尖畸形患者进行手术矫治,术后结合鼻管支撑的鼻孔悬吊法外固定7~10d。结果术后经14个月至3年的随访,18例患者的鼻尖外形良好,形态满意。其中1例患者因鼻腔内悬吊线穿透引起轻度炎症,术后3周剪除缝线,5d自愈。结论采用埋没导引缝合的手术方法对鹰钩鼻鼻尖畸形患者进行矫治,并结合缝合、悬吊和固定,获得了良好的术后效果。此方法是一种较理想的手术方法,值得推广应用。 相似文献
7.
M. S. Levine A. M. Adinolfi R. S. Fisher C. D. Hull D. Guthrie N. A. Buchwald 《Brain research》1988,440(2):267-279
These studies provide information on the changes in the ultrastructure in the caudate nucleus of aged cats. The major findings was that there was a decrease in the density of synapses in caudate neuropil. This decrease occurred in animals after 3 years of age and remained relatively constant in older animals. In conjunction with this change a population of unusually long synapses also occurred. These larger synaptic appositions were associated with enlarged spine heads. The caudate also showed a number of qualitative ultrastructural alterations. Many neurons contained accumulations of lipofuscin or lipopigment granules in aged animals. These inclusions occurred in both soma and dendrites of neurons and all types of glial cells. A unique configuration of collapsed agranular cisterns also was observed in aged animals. The present results indicate that decreases in synaptic density may by one morphological event underlying functional alterations observed in caudate neurons in aged cats. 相似文献
8.
耳脑医用粘合剂是α-氰基丙烯酸正辛酯和α-氰基丙烯酸正丁酯及少量添加剂配伍而成的复合性医用粘合剂。应用此粘合剂粘合修补脑脊液漏27例,其中外伤性脑脊液鼻漏5例,经鼻蝶入路垂体瘤切除术脑脊液漏6例,开颅手术后手术切口脑脊液漏11例,脊膜膨出修补术后脑脊液漏5例。成功25例,成功率93%。应用此粘合剂修补脑脊液漏具有简便、迅速、有效的特点。 相似文献
9.
将医用缝合线浸泡在质粒DNA溶液中,然后缝合在大鼠股四头肌上,可以观察到外源基因在肌肉组织中高效、稳定地表达,其表达量高于磷酸钙共沉淀和DNA沉淀块埋植法,较肌肉直接注射法表达量高10倍左右。 相似文献
10.
Louis F. McIntyre MD 《Operative Techniques in Sports Medicine》1997,5(4):233-237
Multidirectional shoulder instability is a common affliction and is increasingly recognized as a debilitating condition in young, athletic patients. Most patients with this condition are in their third decade and have a history of macrotrauma or repetitive microtrauma. Complaints range from frank instability to instability with pain, or to pain alone. These patients may display clinical signs of instability, impingement, or both on physical examination. Generalized ligamentous laxity or shoulder laxity alone are usually present. A positive sulcus sign remains the most sensitive clinical test in distinguishing these patients, even though no data is available on the sensitivity or specificity of this examination. The greater majority of patients are successfully treated with an exercise program stressing rotator cuff and scapular stabilizer strengthening. When patients do not respond to conservative treatment, open capsular shift has been recommended to restore joint stability. Early successes with the arthroscopic treatment of anterior shoulder instability have led to the development of similar procedures for the treatment of multidirectional instability. This paper describes an arthroscopic, multiple suture capsulorrhaphy for the treatment of multidirectional shoulder instability, which is a modification of the procedure advocated by Caspari and reviews the 2-year results of the first 19 patients treated. 相似文献