全文获取类型
收费全文 | 262822篇 |
免费 | 24952篇 |
国内免费 | 20505篇 |
专业分类
耳鼻咽喉 | 2012篇 |
儿科学 | 2303篇 |
妇产科学 | 3005篇 |
基础医学 | 32552篇 |
口腔科学 | 4268篇 |
临床医学 | 37848篇 |
内科学 | 38472篇 |
皮肤病学 | 2393篇 |
神经病学 | 14855篇 |
特种医学 | 9532篇 |
外国民族医学 | 198篇 |
外科学 | 25075篇 |
综合类 | 44042篇 |
现状与发展 | 74篇 |
一般理论 | 27篇 |
预防医学 | 15849篇 |
眼科学 | 8168篇 |
药学 | 28164篇 |
299篇 | |
中国医学 | 15566篇 |
肿瘤学 | 23577篇 |
出版年
2024年 | 931篇 |
2023年 | 4355篇 |
2022年 | 11322篇 |
2021年 | 14002篇 |
2020年 | 10639篇 |
2019年 | 9229篇 |
2018年 | 9666篇 |
2017年 | 8510篇 |
2016年 | 8094篇 |
2015年 | 12173篇 |
2014年 | 14951篇 |
2013年 | 12520篇 |
2012年 | 18719篇 |
2011年 | 21528篇 |
2010年 | 13028篇 |
2009年 | 10057篇 |
2008年 | 13330篇 |
2007年 | 13359篇 |
2006年 | 13593篇 |
2005年 | 13848篇 |
2004年 | 8199篇 |
2003年 | 7607篇 |
2002年 | 6374篇 |
2001年 | 5695篇 |
2000年 | 6426篇 |
1999年 | 7182篇 |
1998年 | 4735篇 |
1997年 | 4753篇 |
1996年 | 3675篇 |
1995年 | 3511篇 |
1994年 | 2896篇 |
1993年 | 1963篇 |
1992年 | 2213篇 |
1991年 | 1842篇 |
1990年 | 1565篇 |
1989年 | 1333篇 |
1988年 | 1133篇 |
1987年 | 990篇 |
1986年 | 748篇 |
1985年 | 608篇 |
1984年 | 348篇 |
1983年 | 214篇 |
1982年 | 115篇 |
1981年 | 126篇 |
1980年 | 82篇 |
1979年 | 90篇 |
1965年 | 1篇 |
1962年 | 1篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
171.
Li Han-yun Ye Yin-dong Zhang Qi-jun Du Cun-hao Li Hui-ming Yin Li 《Bulletin of environmental contamination and toxicology》2022,109(2):409-416
Bulletin of Environmental Contamination and Toxicology - In this study, a composite algaecide containing flocculants and Cinnamomum. camphora leaves extracts (CCCLE) were synthesized. The... 相似文献
172.
Amy Y. Zhang Christopher Burant Alex Z. Fu Gerald Strauss Donald R. Bodner Lee Ponsky 《Journal of psychosocial oncology》2020,38(2):210-227
AbstractPurpose: We examined underlying psychosocial processes of a behavioral treatment for urinary incontinence (UI) of prostate cancer survivors.Design: Secondary analysis of data collected from a clinical trial.Sample: Two hundred forty-four prostate cancer survivors who participated in a clinical trial of behavioral intervention to UI as intervention or control subjects.Methods: The participants had a 3-month behavioral intervention or usual care and were followed up for an additional 3?months. They were assessed at baseline, 3, and 6?months. Latent growth curve models were performed to examine trajectories of each study variable and relationships among the variables.Findings: Increasing self-efficacy and social support were significantly and independently associated with more reduction of urinary leakage frequency over time.Implications for psychosocial oncology: Providing problem-solving skills and social support, including peer support, are essential for empowering patients to reduce UI. 相似文献
173.
174.
Qian S Zhang Brian L Browning Sharon R Browning 《European journal of human genetics : EJHG》2015,23(5):672-677
We performed genome-wide tests for association between haplotype clusters and each of 9 metabolic traits in a cohort of 5402 Northern Finnish individuals genotyped for 330 000 single-nucleotide polymorphisms. The metabolic traits were body mass index, C-reactive protein, diastolic blood pressure, glucose, high-density lipoprotein (HDL), insulin, low-density lipoprotein (LDL), systolic blood pressure, and triglycerides. Haplotype clusters were determined using Beagle. There were LDL-associated clusters in the chromosome 4q13.3-q21.1 region containing the albumin (ALB) and platelet factor 4 (PF4) genes. This region has not been associated with LDL in previous genome-wide association studies. The most significant haplotype cluster in this region was associated with 0.488 mmol/l higher LDL (95% CI: 0.361–0.615 mmol/l, P-value: 6.4 × 10−14). We also observed three previously reported associations: Chromosome 16q13 with HDL, chromosome 1p32.3-p32.2 with LDL and chromosome 19q13.31-q13.32 with LDL. The chromosome 1 and chromosome 4 LDL associations do not reach genome-wide significance in single-marker analyses of these data, illustrating the power of haplotypic association testing. 相似文献
175.
176.
177.
178.
Zhengxian Huang Nan Xie Haichao Liu Yuehan Wan Yue Zhu Ming Zhang Yifan Tao Han Zhou Xiqiang Liu Jinsong Hou Cheng Wang 《Journal of oral pathology & medicine》2019,48(9):788-798
It has been suggested that tumour‐infiltrating lymphocytes (TILs) are associated with the progression of oral squamous cell carcinoma (OSCC). However, the prognostic value of TILs is inconclusive due to the heterogeneity of immune cells within the tumour microenvironment. In this meta‐analysis, we aimed to assess the prognostic value of TILs in OSCC. The PubMed, Cochrane, Embase, Scopus and Web of Science databases were searched up to April 20, 2019, and 33 studies were ultimately included in this meta‐analysis. Our pooled meta‐analysis showed that high infiltration of CD8+ TILs, CD45RO+ TILs and CD57+ TILs favoured better overall survival (OS). However, high infiltration of CD68+ macrophages and CD163+ macrophages was associated with poor prognosis in OSCC. These findings suggest that CD8+ TILs, CD45RO+ TILs, CD57+ TILs, CD68+ macrophages and CD163+ macrophages might serve as novel prognostic factors and therapeutic targets in OSCC. 相似文献
180.
结直肠癌是常见的消化道肿瘤,其营养不良发生率高且严重。化疗是结直肠癌常见治疗方式之一,并与营养不良独立相关,化疗后患营养不良风险增大且营养不良进一步加重。同时,营养不良可导致患者化疗疗效差及预后不良,并增加化疗相关不良反应、影响患者生活质量及降低生存率等。营养治疗能够有效改善患者营养状况,在肿瘤综合治疗中有重要作用,且多学科团队合作是有效的营养干预模式。目前营养治疗主要包括营养咨询、口服营养补充剂、肠内营养和肠外营养等,相关指南和研究表明在营养治疗时应首选口服营养补充剂及肠内营养,仅在采用以上治疗后仍存在营养不足或无法进行肠内营养时行肠外营养。本文主要对结直肠癌患者营养状况与化疗之间关系、营养治疗的最新研究进展及相关指南进行综述,以期引起临床上对结直肠癌化疗患者营养治疗方面重视并提供参考。 相似文献