全文获取类型
收费全文 | 2706篇 |
免费 | 173篇 |
国内免费 | 8篇 |
专业分类
耳鼻咽喉 | 62篇 |
儿科学 | 174篇 |
妇产科学 | 33篇 |
基础医学 | 282篇 |
口腔科学 | 102篇 |
临床医学 | 191篇 |
内科学 | 561篇 |
皮肤病学 | 66篇 |
神经病学 | 219篇 |
特种医学 | 133篇 |
外科学 | 429篇 |
综合类 | 76篇 |
预防医学 | 90篇 |
眼科学 | 97篇 |
药学 | 169篇 |
中国医学 | 13篇 |
肿瘤学 | 190篇 |
出版年
2023年 | 20篇 |
2022年 | 62篇 |
2021年 | 139篇 |
2020年 | 69篇 |
2019年 | 93篇 |
2018年 | 100篇 |
2017年 | 76篇 |
2016年 | 98篇 |
2015年 | 82篇 |
2014年 | 144篇 |
2013年 | 142篇 |
2012年 | 218篇 |
2011年 | 181篇 |
2010年 | 115篇 |
2009年 | 62篇 |
2008年 | 103篇 |
2007年 | 126篇 |
2006年 | 133篇 |
2005年 | 108篇 |
2004年 | 94篇 |
2003年 | 62篇 |
2002年 | 56篇 |
2001年 | 45篇 |
2000年 | 61篇 |
1999年 | 53篇 |
1998年 | 28篇 |
1997年 | 25篇 |
1996年 | 19篇 |
1995年 | 11篇 |
1994年 | 8篇 |
1992年 | 22篇 |
1991年 | 22篇 |
1990年 | 29篇 |
1989年 | 18篇 |
1988年 | 17篇 |
1987年 | 23篇 |
1986年 | 20篇 |
1985年 | 16篇 |
1984年 | 18篇 |
1983年 | 12篇 |
1982年 | 8篇 |
1978年 | 11篇 |
1977年 | 10篇 |
1976年 | 9篇 |
1975年 | 16篇 |
1974年 | 11篇 |
1973年 | 9篇 |
1972年 | 10篇 |
1971年 | 11篇 |
1970年 | 8篇 |
排序方式: 共有2887条查询结果,搜索用时 15 毫秒
1.
2.
Samir Kumar Praharaj mbbs md dpm Nishant Goyal mbbs md dpm Sukanto Sarkar mbbs md dpm Dhruv Bagati mbbs Prakriti Sinha mp hil Vinod Kumar Sinha mbbs md dpm 《Psychiatry and clinical neurosciences》2009,63(2):230-234
Reported herein is a case of obsessive–compulsive disorder with persistent and distressing musical obsessions along with other symptoms. Advanced source analysis of electroencephalographic data indicated high spectral power over the bifrontal region. The musical symptoms were resistant to pharmacotherapy but there was some reduction in frequency and duration of musical obsessions with thought-stopping technique. 相似文献
3.
4.
V Bhattacharya G R Reddy Sunish Goyal Umesh Kumar 《Journal of plastic, reconstructive & aesthetic surgery》2007,60(8):892-897
Defects involving the distal leg and foot are frequently encountered following various aetiological factors. Paucity of local tissue causes surgeons to resort to the retrograde peninsular flap, the cross leg flap or the free flap. With specific knowledge of perforators, the fasciocutaneous flap from the calf area can be transferred to the defect in a single stage based on skeletonised distal perforators. The surgical anatomy, flap planning and procedure have been detailed. Nineteen patients were treated during the period 1995 to 2005. The perforators were identified preoperatively by audio Doppler. The flaps were marked and dissected proximal to the defect skeletonising the distal perforators under loupe magnification and transferred to the defect in a single stage. The donor site was skin grafted. Out of 19 cases, 16 flaps healed uneventfully, one flap necrosed completely and in two cases there was marginal necrosis. The cases were followed up for 2-10 years with an average of 6 years. With detailed knowledge of perforators one can safely reconstruct distal moderate-size defects of the lower limb in a single stage, thus having the benefits of free tissue transfer without resorting to microsurgery. This technique has proved to be an advancement in the reconstructive repertoire allowing flaps of non conventional dimensions to be perfused by skeletonised perforators. 相似文献
5.
6.
A case of congenital erythropoietic porphyria, with corneoscleral ulceration, a rare association in this disorder, was reported. Anterior segment ischemia is believed to play an important role in the etiopathogenesis of corneoscleral ulceration. Remarkable improvement occurred with use of topical heparin drops (500 units/ml). 相似文献
7.
8.
We report two full-term infants who developed repetitive focal seizures within the first 48 hours of life. Neither infant had predisposing factors and there were no abnormalities on a computed tomography (CT) scan performed on day 2 of life. Magnetic resonance imaging (MRI) performed during the second week of life showed a focal hemorrhagic infarction in both patients. We conclude that either an MRI or a contrast-enhanced CT scan should be obtained within 1 week in patients in whom the initial imaging technique failed to reveal a focal lesion, at which time a cerebral infarction can be diagnosed with greater sensitivity. 相似文献
9.
S Kumar A Kumar P K Goyal G C Jagetia P Uma Devi 《Strahlentherapie und Onkologie》1992,168(10):610-612
The alterations in the oesophageal epithelium were studied in mice after a single whole-body exposure to 7.5 Gy of Co-60 gamma rays in presence or absence of 2-mercaptopropionyl glycine. The epithelium showed an increase in the thickness which reached a maximum on the third day and then decreased gradually up to seventh day after irradiation in the non-drug treated group. In the 2-mercaptopropionyl glycine treated animals the epithelial thickness remained in the normal range except on the day 7 when it was significantly lower than normal. The total cell population registered a steady decline from one to seven days post-irradiation in both groups, but the number of cells was more in the 2-mercaptopropionyl glycine treated group. The number of pycnotic nuclei showed an inverse relationship to the total cell population, it increased continuously up to seven days in both the protected and non-protected groups. However, pycnotic nuclei were significantly lower in the protected group on days 3, 5 and 7 in non-protected group. 相似文献
10.