全文获取类型
收费全文 | 1862篇 |
免费 | 102篇 |
国内免费 | 6篇 |
专业分类
耳鼻咽喉 | 8篇 |
儿科学 | 48篇 |
妇产科学 | 61篇 |
基础医学 | 259篇 |
口腔科学 | 28篇 |
临床医学 | 165篇 |
内科学 | 400篇 |
皮肤病学 | 22篇 |
神经病学 | 179篇 |
特种医学 | 130篇 |
外科学 | 289篇 |
综合类 | 3篇 |
预防医学 | 112篇 |
眼科学 | 18篇 |
药学 | 124篇 |
中国医学 | 1篇 |
肿瘤学 | 123篇 |
出版年
2023年 | 14篇 |
2022年 | 24篇 |
2021年 | 53篇 |
2020年 | 20篇 |
2019年 | 36篇 |
2018年 | 51篇 |
2017年 | 41篇 |
2016年 | 31篇 |
2015年 | 46篇 |
2014年 | 74篇 |
2013年 | 99篇 |
2012年 | 108篇 |
2011年 | 103篇 |
2010年 | 88篇 |
2009年 | 80篇 |
2008年 | 96篇 |
2007年 | 93篇 |
2006年 | 113篇 |
2005年 | 97篇 |
2004年 | 85篇 |
2003年 | 69篇 |
2002年 | 73篇 |
2001年 | 64篇 |
2000年 | 52篇 |
1999年 | 39篇 |
1998年 | 11篇 |
1997年 | 14篇 |
1996年 | 8篇 |
1995年 | 14篇 |
1994年 | 15篇 |
1993年 | 6篇 |
1992年 | 25篇 |
1991年 | 37篇 |
1990年 | 26篇 |
1989年 | 25篇 |
1988年 | 10篇 |
1987年 | 16篇 |
1986年 | 11篇 |
1985年 | 15篇 |
1984年 | 8篇 |
1983年 | 4篇 |
1982年 | 4篇 |
1980年 | 5篇 |
1979年 | 14篇 |
1978年 | 5篇 |
1977年 | 6篇 |
1974年 | 7篇 |
1973年 | 8篇 |
1970年 | 5篇 |
1967年 | 3篇 |
排序方式: 共有1970条查询结果,搜索用时 0 毫秒
991.
Giulio E. Lancioni Nirbhay N. Singh Mark F. OReilly Jeff Sigafoos Doretta Oliva Angela Smaldone Maria L. La Martire 《Research in developmental disabilities》2009,30(6):1229-1236
These two studies involved a boy and a man with multiple disabilities, who were taught to use a mouth-drying response to reduce the effects of their drooling. Both studies relied on microswitch technology to monitor the drying response and follow it with positive stimulation (i.e., during intervention). In Study I, the boy performed the drying response via a special napkin. The microswitch technology consisted of touch/pressure sensors and a radio transmitter hidden inside the napkin. Drying responses led the boy to 8 s of preferred stimulation. In Study II, the man performed the drying response via a handkerchief. The microswitch technology consisted of an optic sensor and a radio transmitter at the man's chest. Drying responses led the man to 8–10 s of preferred stimulation. The stimulation time/conditions were subsequently modified to promote a reduction in the man's response frequency. The experimental design involved an ABAB sequence (Study I) or an ABABB1B2 sequence (Study II), with the second B or the B1B2 combination spreading over periods of about 3 months. The results indicated vast increases in drying responses and decreases in chin wetness during the intervention phases. The frequencies of the drying response remained consistent for the boy and stabilized at a lower level (i.e., in line with the manipulation of the stimulation conditions) for the man. Implications of the findings and limitations of the studies are discussed. 相似文献
992.
993.
994.
995.
996.
Esther Oliva Noemi Garcia-Miralles Quynh Vu Robert H Young 《International journal of gynecological pathology》2007,26(4):359-367
CD10 has been recently advocated as a good immunohistochemical marker for endometrial stromal tumors. Metastatic endometrial stromal tumors to the ovary and primary endometrioid stromal sarcomas may show overlapping histological features with pure stromal and sex cord-stromal tumors (SCSTs). We investigated CD10 expression in a large series of pure stromal and SCSTs of the ovary to ascertain whether CD10 may aid in this differential diagnosis. Archival material from 11 fibromas, 10 thecomas, 10 sclerosing stromal tumors (SSTs), 10 adult granulosa cell tumors (AGCTs), 4 luteinized AGCTs, 9 juvenile granulosa cell tumors (JGCTs), 9 Sertoli cell tumors, 9 Sertoli-Leydig cell tumors, 11 sex cord tumors with annular tubules, 10 steroid cell tumors (StCTs), and 8 fibrosarcomas of the ovary were immunostained for CD10. The percentage of cells stained (<5%, 5%-39%, 40%-75%, and >75%) and intensity of staining (1+, 2+, 3+) were evaluated. CD10 was expressed in 7 of 10 thecomas (4 with 5%-75% and mostly 1+), 9 of 10 SSTs (7 with 5%-39% + cells, mostly 1+), 9 of 10 AGCTs (<5%-39%, four 1+, five 2+), 1 of 4 luteinized AGCTs (<5% and 1+), 8 of 9 JGCTs (mostly <5% to 39% and +1), 4 of 9 Sertoli cell tumors (either focal or >75% with variable intensity), 4 of 9 Sertoli-Leydig cell tumors (mostly <10% with variable staining), with the Leydig cells being positive in only 1 tumor (1+ and <5%), and 7 of 10 StCTs (4 tumors with more than 75% + cells, from 1+ to 3+). All fibromas, all but 1 fibrosarcoma (<5% and 1+), and all sex cord tumors with annular tubules were CD10 negative. CD10 expression was frequently seen in StCTs, SSTs, and thecomas of the ovary, although the latter 2 categories usually showed only faint immunoreactivity. In conclusion the frequency and intensity of CD10 immunoreactivity in pure stromal and sex cord-stromal ovarian tumors are low and contrast with the typical strong and diffuse immunostaining seen in endometrial stromal tumors; however, faint CD10 positivity is consistent with the diagnosis of ovarian SCST. Steroid cell tumors are often positive for CD10, but these tumors do not pose problems in differential diagnosis with endometrial stromal tumors. CD10 may play a useful role in aiding the differential between endometrial stromal tumors in the ovary and SCST and stromal tumors. 相似文献
997.
The development of a reno-jejunal fistula following a Roux-en-Y cystojejunostomy for an incorrectly diagnosed pancreatic pseudocyst is described. Up to now, this is the second case of iatrogenic reno-jejunal fistula reported in literature.Reno-jejunal fistulas are exceedingly rare and are usually consequences of urologic pathologies of infectious origin. Reno-jejunal fistulas of iatrogenic origin are even rarer, only one case being referred in literature [1]. Herein the second case is reported. 相似文献
998.
999.
S Paira S Roverano A Zunino M E Oliva M L Bertolaccini 《The Journal of rheumatology》1999,26(5):1197-1200
Extensive cutaneous necrosis (ECN) associated with antiphospholipid antibodies is a rare presentation. We describe 2 patients with ECN and high titers of anticardiolipin antibodies. The mechanism by which these antibodies act has not been established and there is still controversy regarding treatment of these patients without established guidelines. In the few documented cases the use of pulse steroid therapy, anticoagulants, fibrinolytic agents, plasmapheresis, or a combination of them has shown some benefit. Early recognition and treatment of the antiphospholipid syndrome may limit the extent of thrombotic complications that can result in tissue necrosis. 相似文献
1000.
C Falces Salvador A Moleiro Oliva M Barcons Vergés I Ausió Rusi?ol D Alcantarilla Roura J Sadurní Serrasolsas 《Revista espa?ola de cardiología》1999,52(9):727-729
Psittacosis is an uncommon cause of acute pericarditis and pericardial effusion. However, some isolated cases have been reported. We present a case which the first clinical feature of psittacosis was acute pericarditis. Severe pericardial effusion associated with a pulmonary infiltrate and an epidemiologic history of contact with avian species suggested the diagnosis of psittacosis, confirmed by serological test. 相似文献