全文获取类型
收费全文 | 86114篇 |
免费 | 7010篇 |
国内免费 | 1742篇 |
专业分类
耳鼻咽喉 | 903篇 |
儿科学 | 2051篇 |
妇产科学 | 1188篇 |
基础医学 | 3503篇 |
口腔科学 | 4547篇 |
临床医学 | 8042篇 |
内科学 | 10257篇 |
皮肤病学 | 1522篇 |
神经病学 | 5261篇 |
特种医学 | 2090篇 |
外国民族医学 | 21篇 |
外科学 | 9403篇 |
综合类 | 15241篇 |
现状与发展 | 8篇 |
一般理论 | 4篇 |
预防医学 | 6063篇 |
眼科学 | 1512篇 |
药学 | 8320篇 |
158篇 | |
中国医学 | 8885篇 |
肿瘤学 | 5887篇 |
出版年
2024年 | 313篇 |
2023年 | 1422篇 |
2022年 | 2558篇 |
2021年 | 3497篇 |
2020年 | 3768篇 |
2019年 | 2882篇 |
2018年 | 2711篇 |
2017年 | 2985篇 |
2016年 | 3290篇 |
2015年 | 3034篇 |
2014年 | 5921篇 |
2013年 | 8015篇 |
2012年 | 5774篇 |
2011年 | 6101篇 |
2010年 | 5137篇 |
2009年 | 4439篇 |
2008年 | 3919篇 |
2007年 | 4171篇 |
2006年 | 3726篇 |
2005年 | 3190篇 |
2004年 | 2668篇 |
2003年 | 2305篇 |
2002年 | 1946篇 |
2001年 | 1562篇 |
2000年 | 1329篇 |
1999年 | 1043篇 |
1998年 | 859篇 |
1997年 | 779篇 |
1996年 | 649篇 |
1995年 | 578篇 |
1994年 | 531篇 |
1993年 | 461篇 |
1992年 | 373篇 |
1991年 | 336篇 |
1990年 | 247篇 |
1989年 | 257篇 |
1988年 | 231篇 |
1987年 | 221篇 |
1986年 | 201篇 |
1985年 | 251篇 |
1984年 | 198篇 |
1983年 | 136篇 |
1982年 | 176篇 |
1981年 | 138篇 |
1980年 | 126篇 |
1979年 | 114篇 |
1978年 | 67篇 |
1977年 | 63篇 |
1976年 | 51篇 |
1975年 | 28篇 |
排序方式: 共有10000条查询结果,搜索用时 46 毫秒
71.
Andrea Vliz Ramírez Susanne Krmer Strenger Melissa Solar Lpez Pamela Muoz Cortes Camila Corral Núez 《Special care in dentistry》2019,39(2):225-230
Cerebral palsy (CP) is a condition caused by brain damage before, during, or shortly after birth. Communication can be a challenge when treating patients with CP. Some patients can communicate verbally, while others use augmentative alternative communication tools or have individualized means of communication. Therefore, professional dental treatment in individuals with CP is challenging, especially if the patient is affected by dental trauma and requires emergency treatment. This report shows how individualized communication skills assessment allowed us to successfully manage a 9‐year‐old patient with CP, who suffered extrusive luxation of the permanent lower incisor. In the present case, the teeth were repositioned briefly after the trauma had occurred and then stabilized with a flexible splint according to international guidelines. The teeth remained vital and periodontal repair was observed during the 4‐year follow‐up. 相似文献
72.
73.
BackgroundThe association of treatment volume and oncological outcome of rectal cancer patients undergoing multidisciplinary treatment is subject of an ongoing debate. Prospective data on long-term local control and overall survival (OS) are not available so far. This study investigated the long-term influence of hospital and surgeon volume on local recurrence (LR) and OS in patients with locally advanced rectal cancers.MethodsIn a post-hoc analysis of the randomized phase III CAO/ARO/AIO-94 trial after a follow-up of more than 10 years, 799 patients with stage II/III rectal cancers were evaluated. LR-rates and OS were stratified by hospital recruitment volume (≤20 vs. 21–90 vs. >90 patients) and by surgeon volume (≤10 vs. 11–50 vs. >50 procedures).ResultsPatients treated in high-volume hospitals had a longer OS than those treated in hospitals with medium or low treatment volume (p = 0.03). The surgeon volume was adversely associated with LR (p = 0.01) but had no influence on overall survival. The positive effect of neoadjuvant chemoradiation (CRT) on local control was the strongest in patients being operated by medium-volume surgeons, less in patients being operated by high-volume surgeons and missing in those being operated by low-volume surgeons.ConclusionsPatients with locally advanced rectal cancers might benefit from treatment in specialized high-volume hospitals. In particular, the surgeon volume had significant influence on long-term local tumour control. The effect of neoadjuvant CRT on local tumour control may likewise depend on the surgeon volume. 相似文献
74.
1381例先天性室间隔缺损的外科治疗 总被引:3,自引:0,他引:3
目的总结先天性室间隔缺损(VSD)手术治疗的临床经验。方法1992年12月至2005年10月手术治疗VSD1381例,男性835例,女性546例,年龄2天至55岁,平均(4.6±3.2)岁。体重2.5~80(14.5±10.7)kg,<10kg者487例(35.3%)。均在低温体外循环下手术,必要时应用深低温低流量及改良超滤技术。直视缝合823例,补片修补558例。结果术后30d内死亡24例(其中11例年龄<6个月),死亡率1.74%;晚期死亡1例。主要并发症发生率9.7%。结论手术治疗室间隔缺损效果满意。但<6个月龄的低体重婴儿应严格控制手术适应证。干下型VSD应早期手术,防止主动脉瓣关闭不全的发生。术后应重视对呼吸系统、循环系统的监护与治疗,重视对肺动脉高压围术期处理 相似文献
75.
重型颅脑损伤的手术治疗 总被引:5,自引:1,他引:4
目的探讨重型颅脑损伤梯度减压的手术方法对预防术中脑膨出、降低死亡率及致残率的效果。方法对100例重型颅脑损伤患者采用分次减压手术方式及去骨瓣后,硬膜与颞肌筋膜瓣减张缝闭硬膜切口方法。结果40例脑肿胀患者术中脑嘭出6例占15.0%,死亡19例占47.5%;60例脑内血肿病人未发生脑膨出,死亡12例占20%。结论脑外伤后脑血管调节麻痹及血肿压迫继发脑水肿易造成脑膨出.术中分次减压降低了骨窗部位脑组织的顺应性,从而降低了局部的压力梯度,避免脑血管急性扩张,能有效防止脑膨出,降低死亡率及致残率。 相似文献
76.
Marieke C Wichers Gunter Kenis Carsten Leue Ger Koek Geert Robaeys Michael Maes 《Neuropsychopharmacology》2006,60(1):77-79
BACKGROUND: Major depression has been associated cross-sectionally with increased cell-mediated immune activation but causality has been difficult to establish. This study prospectively investigated the hypothesis that baseline level of immune activation predicts the development of depression during interferon-alpha (IFN-alpha) treatment. METHODS: Sixteen hepatitis C patients without psychiatric disorder underwent IFN-alpha treatment. Proinflammatory and anti-inflammatory cytokines were determined before starting treatment. Presence of a major depressive disorder (MDD) was assessed at baseline and several times during treatment. RESULTS: Baseline soluble interleukin-2 receptor (sIL-2r), interleukin-6 (IL-6), and interleukin-10 (IL-10) concentrations were significantly increased in the five subjects that developed MDD during treatment compared with those that did not, with standardized effect sizes of 1.08, 1.16, and 1.25, respectively, controlling for marijuana use, cigarette smoking, and baseline level of depressive symptoms. CONCLUSIONS: Results suggest that increased immune activation, rather than an epiphenomenon, is a causal risk factor for the development of MDD. 相似文献
77.
Hai-hong Chen Liang Chai Wei Pan 《中国医学科学杂志(英文版)》2006,21(3):197-200
VAGAL paraganglioma VP)is an uncommonneoplasm originating from neural crest paragan-glion cells located along the vagus nerve,repre-senting less than5%of all paragangliomas of the head andneck.1Despite improvement in microsurgical techniques,management of… 相似文献
78.
尖锐湿疣复发机理与抗复发治疗进展 总被引:6,自引:0,他引:6
林昭春 《实用医院临床杂志》2006,3(2):21-22
尖锐湿疣是全球范围内广泛流行的性传播疾病之一,本文主要对其发病和复发的危险因素,以及常用的抗复发治疗方法进行综述。 相似文献
79.
目的探讨治疗下肢静脉溃疡有效、简单的方法。方法清除下肢静脉溃疡分泌物及坏死组织,创面以胰岛素与庆大霉素混合液湿敷,创面清洁后行常规手术,术后继续用上述方法处理创面。结果全部溃疡创面在1 ̄6周内愈合,术后35例随诊最短4个月,最长6年无溃疡复发。结论下肢静脉性溃疡应早期手术,术前、术后用胰岛素和庆大霉素混合液湿敷溃疡创面是一种简单、安全、经济、治疗时间短的有效方法。 相似文献
80.
目的对年轻患者肩关节脱位进行系统的康复治疗,以检验系统康复疗法疗效优于单纯固定的假设。方法根据所采用的治疗方法,将43例40岁以下的急性肩关节脱位患者分成实验组23例,对照组20例。实验组患者进行包括关节活动范围锻炼、发展肩胛骨周围肌的肌力训练、发展肩袖肌的肌力、适度的外展、外旋锻炼及耐力训练在内的系统康复治疗。对照组只进行单纯固定后未经系统康复治疗。对两组患者的临床效果进行比较。结果实验组复发率为17%(4/23),对照组复发率为45%(9/20),两组复发率比较差异有显著性意义(χ2=3.866,P<0.05);随访结果显示肩关节ASES评分实验组为90.9±4.87,对照组为75.4±4.94,两组差异有非常显著性意义(t=9.94,P=2.99×10-12<0.01)。结论肩关节脱位年轻患者进行系统的康复锻炼,可以提高患肩的稳定性。 相似文献