全文获取类型
收费全文 | 3318篇 |
免费 | 289篇 |
国内免费 | 171篇 |
专业分类
耳鼻咽喉 | 105篇 |
儿科学 | 116篇 |
妇产科学 | 38篇 |
基础医学 | 351篇 |
口腔科学 | 106篇 |
临床医学 | 353篇 |
内科学 | 591篇 |
皮肤病学 | 38篇 |
神经病学 | 155篇 |
特种医学 | 183篇 |
外科学 | 274篇 |
综合类 | 499篇 |
现状与发展 | 2篇 |
一般理论 | 1篇 |
预防医学 | 228篇 |
眼科学 | 42篇 |
药学 | 313篇 |
1篇 | |
中国医学 | 127篇 |
肿瘤学 | 255篇 |
出版年
2024年 | 7篇 |
2023年 | 27篇 |
2022年 | 90篇 |
2021年 | 117篇 |
2020年 | 83篇 |
2019年 | 82篇 |
2018年 | 82篇 |
2017年 | 99篇 |
2016年 | 87篇 |
2015年 | 158篇 |
2014年 | 173篇 |
2013年 | 175篇 |
2012年 | 223篇 |
2011年 | 206篇 |
2010年 | 200篇 |
2009年 | 147篇 |
2008年 | 144篇 |
2007年 | 225篇 |
2006年 | 165篇 |
2005年 | 136篇 |
2004年 | 89篇 |
2003年 | 98篇 |
2002年 | 119篇 |
2001年 | 69篇 |
2000年 | 61篇 |
1999年 | 55篇 |
1998年 | 70篇 |
1997年 | 78篇 |
1996年 | 68篇 |
1995年 | 62篇 |
1994年 | 51篇 |
1993年 | 43篇 |
1992年 | 25篇 |
1991年 | 21篇 |
1990年 | 20篇 |
1989年 | 23篇 |
1988年 | 34篇 |
1987年 | 28篇 |
1986年 | 18篇 |
1985年 | 15篇 |
1984年 | 8篇 |
1983年 | 11篇 |
1982年 | 9篇 |
1981年 | 9篇 |
1980年 | 12篇 |
1978年 | 6篇 |
1977年 | 11篇 |
1976年 | 7篇 |
1975年 | 5篇 |
1968年 | 4篇 |
排序方式: 共有3778条查询结果,搜索用时 15 毫秒
1.
2.
3.
AbstractCadmium (Cd) as environmental pollutant can induce severe damage, particularly to the testis. This study investigated the effects of Caffeic acid phenethyl ester (CAPE) on testicular dysfunction induced by Cd. Adult mice were intraperitoneally injected with cadmium chloride (CdCl2) with different doses of CAPE pretreatment. After CdCl2 injection, body/testis weight ratio decreased, Cd levels accumulated and zinc levels decreased in testis. Furthermore, Cd intoxication caused a significant increase of oxidative stress levels, antioxidant enzymes activities, and glutathione levels. Interestingly, significant improvements were observed after the administration of CAPE. Our results demonstrated the protective effect of CAPE, linking Cd testicular dysfunction to oxidative stress. 相似文献
4.
INTRODUCTION The exact cause of Parkinson disease (PD) has not been known yet[1]. The overwhelming progress had been made in the treatment and pathogenesis of PD in recent 30 years, especially 10 years[2]. But it is still no way now to prevent or postpone… 相似文献
5.
董频 《山东医大基础医学院学报》2006,(4)
目的:运用软硬腭前移的手术方法扩大鼻咽下口,改善因鼻咽部狭小致阻塞性睡眠呼吸暂停综合征患者的呼吸暂停症状。方法:手术切除硬腭后份使其缩短、悬雍垂软腭成形并将软腭拉向前,扩大鼻咽下口。结果:患者术后自觉症状及客观评价疗效满意。结论:软硬腭前移鼻咽下口扩大显著改善鼻咽下口狭小导致的阻塞性睡眠呼吸暂停患者的症状。 相似文献
6.
7.
Carel Bron Michel Wensing Jo LM Franssen Rob AB Oostendorp 《BMC musculoskeletal disorders》2007,8(1):107
Background
Shoulder disorders are a common health problem in western societies. Several treatment protocols have been developed for the clinical management of persons with shoulder pain. However available evidence does not support any protocol as being superior over others. Systematic reviews provide some evidence that certain physical therapy interventions (i.e. supervised exercises and mobilisation) are effective in particular shoulder disorders (i.e. rotator cuff disorders, mixed shoulder disorders and adhesive capsulitis), but there is an ongoing need for high quality trials of physical therapy interventions. Usually, physical therapy consists of active exercises intended to strengthen the shoulder muscles as stabilizers of the glenohumeral joint or perform mobilisations to improve restricted mobility of the glenohumeral or adjacent joints (shoulder girdle). It is generally accepted that a-traumatic shoulder problems are the result of impingement of the subacromial structures, such as the bursa or rotator cuff tendons. Myofascial trigger points (MTrPs) in shoulder muscles may also lead to a complex of symptoms that are often seen in patients diagnosed with subacromial impingement or rotator cuff tendinopathy. Little is known about the treatment of MTrPs in patients with shoulder disorders. 相似文献8.
9.
10.
Urethral reconstruction with graft substances, such as skin and bladder mucosa, has been previously used when primary anastomosis cannot be achieved. However, stricture and meatal prolapse are associated with these grafts. We report the use of buccal mucosa for the reconstruction of urethral defects in 3 patients. One patient with failed operation for hypospadias received tube buccal mucosal graft for urethral replacement. Two patients with urethral necrosis and stricture received onlay buccal mucosal graft. All patients were disease-free during follow-up (range, 12 to 49 months; mean, 36 months). One patient had a pinhole fistula that was successfully managed with simple repair. This technique appears to be useful for urethral reconstruction when a local graft is not available, even in patients with complicated conditions. 相似文献