全文获取类型
收费全文 | 13829篇 |
免费 | 638篇 |
国内免费 | 87篇 |
专业分类
耳鼻咽喉 | 126篇 |
儿科学 | 275篇 |
妇产科学 | 236篇 |
基础医学 | 1856篇 |
口腔科学 | 312篇 |
临床医学 | 1319篇 |
内科学 | 3515篇 |
皮肤病学 | 188篇 |
神经病学 | 1447篇 |
特种医学 | 468篇 |
外科学 | 2044篇 |
综合类 | 16篇 |
一般理论 | 2篇 |
预防医学 | 433篇 |
眼科学 | 134篇 |
药学 | 898篇 |
中国医学 | 14篇 |
肿瘤学 | 1271篇 |
出版年
2024年 | 66篇 |
2023年 | 91篇 |
2022年 | 191篇 |
2021年 | 310篇 |
2020年 | 183篇 |
2019年 | 282篇 |
2018年 | 338篇 |
2017年 | 254篇 |
2016年 | 317篇 |
2015年 | 311篇 |
2014年 | 473篇 |
2013年 | 676篇 |
2012年 | 1013篇 |
2011年 | 964篇 |
2010年 | 534篇 |
2009年 | 487篇 |
2008年 | 873篇 |
2007年 | 845篇 |
2006年 | 884篇 |
2005年 | 904篇 |
2004年 | 929篇 |
2003年 | 827篇 |
2002年 | 732篇 |
2001年 | 134篇 |
2000年 | 101篇 |
1999年 | 126篇 |
1998年 | 173篇 |
1997年 | 122篇 |
1996年 | 130篇 |
1995年 | 116篇 |
1994年 | 110篇 |
1993年 | 109篇 |
1992年 | 88篇 |
1991年 | 91篇 |
1990年 | 70篇 |
1989年 | 73篇 |
1988年 | 52篇 |
1987年 | 52篇 |
1986年 | 61篇 |
1985年 | 48篇 |
1984年 | 50篇 |
1983年 | 44篇 |
1982年 | 51篇 |
1981年 | 54篇 |
1980年 | 33篇 |
1979年 | 20篇 |
1978年 | 20篇 |
1977年 | 18篇 |
1975年 | 14篇 |
1973年 | 13篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
41.
42.
Burgio Francesca Benavides-Varela Silvia Toffano Roberta Palmer Katie Meneghello Francesca Arcara Giorgio Semenza Carlo 《Neurological sciences》2022,43(1):299-303
Neurological Sciences - Patients with mild cognitive impairment (MCI) might experience difficulties in numerical and financial abilities of daily living that compromise their autonomy. The aim of... 相似文献
43.
44.
Laurent Lafosse Giorgio Franceschi Bartlomiej Kordasiewicz Wade J. Andrews Daniel Schwartz 《Musculoskeletal surgery》2012,96(3):205-212
Posterior glenohumeral instability remains a difficult problem. There are still many controversies regarding surgical treatment, due to a lack of understanding the pathomechanical issues leading to posterior instability. This article presents a new arthroscopic technique of posterior bone block augmentation, which we found to be effective, repeatable and successful. This technique can be used for combined soft tissue and bony defects as well as for revisions after previous soft tissue reconstructions. 相似文献
45.
46.
47.
48.
Pasqual E Bertolissi F Grimaldi F Beltrami CA Scott CA Bacchetti S Waclaw BU Cagol PP 《Surgery today》2002,32(6):563-565
Adrenal epithelioid angiosarcoma is an extremely rare tumor. Even if such tumors are very aggressive, a long survival may
occasionally be observed after an adrenal ectomy. A 70-year-old woman suffering from persistent right flank pain showed a
5-cm right adrenal mass plus a 2-cm liver mass at the radiologic workup, and both were suspected of being malignant. No adrenal
hypersecretion was demonstrated. During an explorative median laparotomy the right adrenal gland with the whole periadrenal
tissue and locoregional lymph nodes was removed. A histological examination revealed an adrenal angiosarcoma. The resection
margin was tumor-free with no lymph node infiltration. The liver mass turned out to be a cistobiliary adenoma. Since no distant
metastases were observed, no adjuvant chemotherapy was performed. After an 18-month follow-up the patient is still well with
no sign of a relapse. When this rare adrenal tumor is encountered and curative treatment is attempted initially extensive
surgical procedures are essential.
Received: April 16, 2001 / Accepted: November 20, 2001 相似文献
49.
Manger PR Kiper D Masiello I Murillo L Tettoni L Hunyadi Z Innocenti GM 《Cerebral cortex (New York, N.Y. : 1991)》2002,12(4):423-437
We describe representations of the visual field in areas 18, 19 and 21 of the ferret using standard microelectrode mapping techniques. In all areas the azimuths are represented as islands of peripheral visual field surrounded by central visual field representation. The zero meridian was found at the 17/18 and 19/21 borders; at the 18/19 and anterior border of 21 the relative periphery of the visual field was found. In areas 18 and 19, elevations are represented in a smooth medio-lateral progression from lower to upper visual field. In several cases the elevations in area 21 evidenced a similar medio-lateral progression; however, in others the elevations exhibited a split representation of the horizontal meridian. Anatomically determined callosal connections coincided with the representation of azimuths near the zero meridian. Medio-lateral bands of callosal connectivity that straddle the 17/18 and 19/21 borders are connected by bridges of callosally projecting cells. Acallosal cortical islands corresponded to the peripheral visual field and were found straddling the 18/19 border and the anterior border of area 21. The results are discussed in relation to callosal connectivity and retinotopy in extrastriate visual cortex and to proposed homologies of carnivore and primate visual cortex. 相似文献
50.
Barbone A Malvindi PG Ferrara P Tarelli G 《Interactive Cardiovascular and Thoracic Surgery》2011,13(3):293-295
Arterial-venous extracorporeal membrane oxygenation (ECMO) is more and more used as first line mechanical support in acute cardiopulmonary failure. Important pitfall of this technique is the inappropriate unloading of left ventricle (LV) in case of myocardial insufficiency, leading to pulmonary stasis and inadequate myocardial recovery. We report our experience of left side unloading by a 7-F pigtail, introduced in the LV through the aortic valve, connected to the venous drainage. Echographic guidance is sufficient to pigtail positioning and follow-up monitoring avoiding catheterization laboratory transport. With this approach we were able to support three different patients, resolving LV distension and preventing lung congestion, without major complication. 相似文献