全文获取类型
收费全文 | 139048篇 |
免费 | 11691篇 |
国内免费 | 4197篇 |
专业分类
耳鼻咽喉 | 1022篇 |
儿科学 | 2473篇 |
妇产科学 | 1866篇 |
基础医学 | 9564篇 |
口腔科学 | 3059篇 |
临床医学 | 16062篇 |
内科学 | 20744篇 |
皮肤病学 | 2458篇 |
神经病学 | 7029篇 |
特种医学 | 4327篇 |
外国民族医学 | 43篇 |
外科学 | 12994篇 |
综合类 | 20320篇 |
现状与发展 | 26篇 |
一般理论 | 2篇 |
预防医学 | 5792篇 |
眼科学 | 2187篇 |
药学 | 14029篇 |
78篇 | |
中国医学 | 12143篇 |
肿瘤学 | 18718篇 |
出版年
2024年 | 148篇 |
2023年 | 2542篇 |
2022年 | 3580篇 |
2021年 | 5937篇 |
2020年 | 5888篇 |
2019年 | 5292篇 |
2018年 | 5026篇 |
2017年 | 5536篇 |
2016年 | 5912篇 |
2015年 | 5766篇 |
2014年 | 10036篇 |
2013年 | 12928篇 |
2012年 | 8350篇 |
2011年 | 8785篇 |
2010年 | 7210篇 |
2009年 | 6649篇 |
2008年 | 6587篇 |
2007年 | 6915篇 |
2006年 | 6168篇 |
2005年 | 5551篇 |
2004年 | 4490篇 |
2003年 | 4121篇 |
2002年 | 3405篇 |
2001年 | 2982篇 |
2000年 | 2430篇 |
1999年 | 1929篇 |
1998年 | 1514篇 |
1997年 | 1260篇 |
1996年 | 1030篇 |
1995年 | 1018篇 |
1994年 | 834篇 |
1993年 | 636篇 |
1992年 | 560篇 |
1991年 | 525篇 |
1990年 | 441篇 |
1989年 | 372篇 |
1988年 | 349篇 |
1987年 | 315篇 |
1986年 | 243篇 |
1985年 | 303篇 |
1984年 | 255篇 |
1983年 | 204篇 |
1982年 | 184篇 |
1981年 | 187篇 |
1980年 | 141篇 |
1979年 | 136篇 |
1978年 | 72篇 |
1977年 | 48篇 |
1976年 | 54篇 |
1975年 | 34篇 |
排序方式: 共有10000条查询结果,搜索用时 46 毫秒
1.
BackgroundFindings on the usefulness of massage therapy (MT) in postoperative pain management are often inconsistent among studies.ObjectivesThis study’s aim is to conduct a meta-analysis of randomized controlled trials (RCT) to clarify the effects of massage therapy in the treatment of postoperative pain.MethodsThree databases (PubMed, Embase, and Cochrane Central Register of Controlled Trials) were searched for RCTs published from database inception through January 26, 2021. The primary outcome was pain relief. The quality of RCTs was appraised with the Cochrane Collaboration risk of bias tool. The random-effect model was used to calculate the effect sizes and standardized mean difference (SMD) with 95 % confidential intervals (CIs) as a summary effect. The heterogeneity test was conducted through I2. Subgroup and sensitivity analyses were used to explore the source of heterogeneity. Possible publication bias was assessed using visual inspection of funnel plot asymmetry.ResultsThe analysis included 33 RCTs and showed that MT is effective in reducing postoperative pain (SMD, −1.32; 95 % CI, −2.01 to −0.63; p = 0.0002; I2 = 98.67 %). A similar significant effect was found for both short (immediate assessment) and long terms (assessment performed 4–6 weeks after the MT). Remarkably, we found neither the duration per session nor the dose had an impact on the effect of MT and there seemed to be no difference in the effects of different MT types. In addition, MT seemed to be more effective for adults. Furthermore, MT had better analgesic effects on cesarean section and heart surgery than orthopedic surgery.LimitationsPublication bias is possible due to the inclusion of studies in English only. Additionally, the included studies were extremely heterogeneous. Double-blind research on MT is difficult to implement, and none of the included studies is double-blind. There was some heterogeneity and publication bias in the included studies. In addition, there is no uniform evaluation standard for the operation level of massage practitioners, which may lead to research implementation bias.ConclusionsMT is effective in reducing postoperative pain in both short and long terms. 相似文献
2.
3.
4.
Wan-Jun Zhang Li-Qiang Wu Jun Wang Sheng-Yun Lin Bo Wang 《World Journal of Clinical Cases》2022,10(23):8242-8248
ABSTRACT
BACKGROUND
Hepatitis-associated aplastic anemia (HAAA) is a rare condition. Patients with HAAA usually present with acute hepatitis, jaundice and significantly increased transaminase. After 1–2 mo, hepatitis gradually improves, but progressive hemocytopenia, bone marrow hematopoietic failure, and severe or extremely severe aplastic anemia are manifest. Most cases of HAAA are fulminant and usually lethal if left untreated. The literature on Epstein–Barr virus (EBV)-associated HAAA is sparse.
CASE SUMMARY
We report a 30-year-old man who was admitted to our hospital because of pale yellow urine and skin with a simultaneous decrease in peripheral blood ternary cells. We made a diagnosis of EBV-associated HAAA. The treatment strategy for this patient included eltrombopag, an immunosuppressive regimen of rabbit anti-human thymocyte immunoglobulin, cyclosporine, and supportive care. The patient was discharged in normal physical condition after five months. A hemogram performed on follow-up revealed that he had achieved a complete response.
CONCLUSION
Eltrombopag plus anti-thymocyte globubin and cyclosporine may be a therapeutic option for EBV-associated HAAA.Larger studies are warranted to confirm. 相似文献
5.
Major depressive disorder is a serious and common neuropsychiatric disorder that affects more than 350 million people worldwide. Electroconvulsive therapy is the oldest and most effective treatment available for the treatment of severe major depressive disorder. Electroconvulsive therapy modifies structural network changes in patients with major depressive disorder and schizophrenia. And it can also affect neuroinflammatory responses and may have neuroprotective effects. Electroconvulsive therapy plays an irreplaceable role in the treatment of major depressive disorder. 相似文献
6.
7.
目的 运用网络药理学方法及分子对接技术探讨黄芪干预腹膜纤维化的可能机制。方法 利用中药系统药理学数据库及分析平台(TCMSP)检索黄芪的主要化学成分及靶点,并补充文献报道相关药理作用的成分作为潜在活性成分。以"peritoneal fibrosis"为关键词分别在OMIM、Genecards获取目前已知的与腹膜纤维化相关的疾病靶点,后取两者的交集靶点;对交集基因通过STRING数据库与Cytoscape 3.7.2软件构建"药物-成分-靶点-疾病"网络及蛋白互作(PPI)网络并筛选核心网络。基于R软件使用Bioconductor生物信息软件对核心靶点进行GO及KEGG富集分析,最终采用AutoDock软件将主要有效成分与核心靶点进行分子对接,得出其结合能力。结果 筛选出20个黄芪活性成分及文献报道有相关药理作用4个, 457药物作用靶点,与674个腹膜纤维化病靶点取交集,得到86个共同靶点。GO功能富集分析提示黄芪拮抗腹膜纤维化主要参与了蛋白激酶B信号转导的调节、细胞对化学的应激反应、炎症反应的调节等通路; KEGG通路富集分析主要涉及调控肿瘤、磷脂酰肌醇-3-羟激酶-蛋白激酶B(PI3K-Akt)、晚期糖基化终末产物/晚期糖基化终末产物受体(AGE-RAGE)、人类巨细胞病毒感染、HIF-1信号通路等;分子对接结果显示关键靶点与活性成分具有较好的结合能力。结论 黄芪治疗腹膜纤维化的分子机制,可能与抑制炎症及氧化应激反应、调节多种信号通路等相关。 相似文献
8.
9.
10.
ObjectiveTo analyze the effects of electrolysis, through a medium frequency current, associated to aerobic physical activity in the body composition of young women.MethodsThe study was composed of 34 sedentary women (24.35 ± 4.43 years, 71.30 ± 7.08 kg, 1.61 ± 0.06 m, 27.31 ± 1.67 kg/m2) which were evaluated for their anthropometric measures and body composition. The volunteers were randomly assigned to two group: Electrolyphysis plus Aerobic Exercise (gEEA): 17 volunteers were submitted to the application, for 60 min , of the Aussie current, followed by aerobic physical activity (77% of HRmax) on the trampoline for 40 min, through video-lessons of Jump; and Aerobic Exercise group (gEA): 17 volunteers performed only physical activity following the same parameters mentioned above. Each group performed its protocols twice weekly, for 5 weeks, totaling 10 sessions. For the data analysis, measures repeated ANOVA was performed to compare the means of the variables analyzed before and after the treatment protocols using the SPSS - 21.0 software, adopting a p ≤ 0.05.ResultsAlthough gEEA decreased suprailiac skinfold (p = 0.04), abdominal skinfold (p = 0.03) and circumference at umbilical scar (p = 0.02) in an intragroup analysis, these means differences in anthropometric measures were not important between-groups (p > 0.05). Furthermore, there were no effect of treatment on body composition (p > 0.05).ConclusionTo this studied condition, our results suggested that application of medium frequency electrolysis did not enhance the losses on anthropometric measures and body composition. 相似文献