全文获取类型
收费全文 | 2043篇 |
免费 | 27篇 |
国内免费 | 3篇 |
专业分类
耳鼻咽喉 | 4篇 |
儿科学 | 21篇 |
妇产科学 | 82篇 |
基础医学 | 395篇 |
口腔科学 | 37篇 |
临床医学 | 119篇 |
内科学 | 196篇 |
皮肤病学 | 20篇 |
神经病学 | 126篇 |
特种医学 | 70篇 |
外科学 | 123篇 |
综合类 | 21篇 |
预防医学 | 411篇 |
眼科学 | 15篇 |
药学 | 352篇 |
中国医学 | 28篇 |
肿瘤学 | 53篇 |
出版年
2023年 | 60篇 |
2022年 | 108篇 |
2021年 | 62篇 |
2020年 | 117篇 |
2019年 | 89篇 |
2018年 | 47篇 |
2017年 | 162篇 |
2016年 | 133篇 |
2015年 | 137篇 |
2014年 | 194篇 |
2013年 | 116篇 |
2012年 | 85篇 |
2011年 | 32篇 |
2010年 | 96篇 |
2009年 | 106篇 |
2008年 | 23篇 |
2007年 | 32篇 |
2006年 | 27篇 |
2005年 | 21篇 |
2004年 | 34篇 |
2003年 | 22篇 |
2002年 | 31篇 |
2001年 | 27篇 |
2000年 | 18篇 |
1999年 | 36篇 |
1998年 | 43篇 |
1997年 | 35篇 |
1996年 | 43篇 |
1995年 | 35篇 |
1994年 | 23篇 |
1993年 | 15篇 |
1992年 | 8篇 |
1991年 | 17篇 |
1990年 | 11篇 |
1989年 | 11篇 |
1988年 | 16篇 |
1987年 | 1篇 |
排序方式: 共有2073条查询结果,搜索用时 250 毫秒
41.
《Health & place》2019
Natural environments may be important for subjective wellbeing, yet evidence is sparse and measures of nature are unspecific. We used linear regression models to investigate the relationship between greenness, biodiversity and blue space and subjective wellbeing in 4,912 adults living in metropolitan Melbourne, Australia. Greenness (overall, private and public) and biodiversity associated with subjective wellbeing. In particular, we highlight the importance of the private greenness-subjective wellbeing association. Our work has implications for urban policy and planning in the context of increased urban densification. 相似文献
42.
The role of oxytocin (OT) as a neuropeptide that modulates social behavior has been extensively studied and reviewed, but beyond these functions, OT’s adaptive functions at birth are quite numerous, as OT coordinates many physiological processes in the mother and fetus to ensure a successful delivery. In this review we explore in detail the potential adaptive roles of oxytocin as an anti-inflammatory, protective molecule at birth for the developing fetal brain and gastrointestinal system based on evidence that birth is a potent inflammatory/immune event. We discuss data with relevance for a number of neurodevelopmental disorders, as well as the emerging role of the gut-brain axis for health and disease. Finally, we discuss the potential relevance of sex differences in OT signaling present at birth in the increased male vulnerability to neurodevelopmental disabilities. 相似文献
43.
44.
45.
46.
47.
Corynebacterium pseudotuberculosis biovar Equi is an important pathogen of horses. It is increasing in frequency in the United States, and is responsible for various clinical forms of infection, including external abscesses, internal abscesses of the abdominal or thoracic cavities, and ulcerative lymphangitis. The host/pathogen factors dictating the form or severity of infection are currently unknown. Our recent investigations have shown that genotyping C. pseudotuberculosis isolates using enterobacterial repetitive intergenic consensus (ERIC)-PCR is useful for understanding the evolutionary genetics of the species as well for molecular epidemiology studies. The aims of the present study were to assess (i) the genetic diversity of C. pseudotuberculosis strains isolated from horses in California, United States and (ii) the epidemiologic relationships among isolates. One hundred and seven C. pseudotuberculosis biovar Equi isolates from ninety-five horses, and two C. pseudotuberculosis biovar Ovis strains, C. pseudotuberculosis ATCC 19410T type strain and C. pseudotuberculosis 1002 vaccine strain, were fingerprinted using the ERIC 1 + 2-PCR. C. pseudotuberculosis isolated from horses showed a high genetic diversity, clustering in twenty-seven genotypes with a diversity index of 0.91. Minimal spanning tree showed four major clonal complexes with a pattern of temporal clustering. Strains isolated from the same horse showed identical ERIC 1 + 2-PCR genotype, with the exception of two strains isolated from the same animal that showed distinct genotypes, suggesting a co-infection. We found no strong genetic signals related to clinical form (including internal versus external infections). However, temporal clustering of genotypes was observed. 相似文献
48.
《结合医学学报(英文版)》2021,19(5):389-394
Clinical trial outcome reporting differs between studies integrating traditional Chinese medicine (TCM) and Western medicine, so that some clinical trials are not eligible for inclusion in a systematic review. The excluded studies are therefore less widely disseminated, and even valid studies are less likely to yield impact. This problem may be addressed by developing core outcome sets (COSs) for integrative medicine in specific healthcare areas. The first stage of development is to define the scope of the COS for integrative medicine, the second stage is to establish the need for such a COS, and the third stage is to develop a protocol and register the COS. The final stage involves three steps: (i) development of a comprehensive list of outcomes (including efficacy outcomes and safety outcomes and TCM syndromes) using systematic review, qualitative or cross-sectional research, and reviews of package inserts and medical records; (ii) merging and grouping of outcomes within domains; (iii) conducting two rounds of Delphi survey and consensus meetings with a range of stakeholders. The final COS will include a general COS and core TCM syndrome- set. Development of COSs for clinical trials of integrative medicine may help to standardize outcome reporting and reduce publication bias in the future. 相似文献
49.
50.