全文获取类型
收费全文 | 13979篇 |
免费 | 1120篇 |
国内免费 | 33篇 |
专业分类
耳鼻咽喉 | 136篇 |
儿科学 | 467篇 |
妇产科学 | 442篇 |
基础医学 | 1888篇 |
口腔科学 | 210篇 |
临床医学 | 1897篇 |
内科学 | 2551篇 |
皮肤病学 | 257篇 |
神经病学 | 1629篇 |
特种医学 | 199篇 |
外科学 | 1289篇 |
综合类 | 105篇 |
一般理论 | 20篇 |
预防医学 | 1899篇 |
眼科学 | 129篇 |
药学 | 949篇 |
中国医学 | 27篇 |
肿瘤学 | 1038篇 |
出版年
2024年 | 33篇 |
2023年 | 206篇 |
2022年 | 379篇 |
2021年 | 717篇 |
2020年 | 454篇 |
2019年 | 664篇 |
2018年 | 692篇 |
2017年 | 467篇 |
2016年 | 498篇 |
2015年 | 578篇 |
2014年 | 756篇 |
2013年 | 907篇 |
2012年 | 1354篇 |
2011年 | 1297篇 |
2010年 | 705篇 |
2009年 | 551篇 |
2008年 | 906篇 |
2007年 | 810篇 |
2006年 | 704篇 |
2005年 | 652篇 |
2004年 | 558篇 |
2003年 | 414篇 |
2002年 | 337篇 |
2001年 | 60篇 |
2000年 | 40篇 |
1999年 | 57篇 |
1998年 | 58篇 |
1997年 | 44篇 |
1996年 | 37篇 |
1995年 | 27篇 |
1994年 | 28篇 |
1993年 | 28篇 |
1992年 | 17篇 |
1991年 | 14篇 |
1990年 | 12篇 |
1989年 | 13篇 |
1988年 | 11篇 |
1987年 | 6篇 |
1986年 | 3篇 |
1985年 | 6篇 |
1984年 | 2篇 |
1983年 | 5篇 |
1982年 | 3篇 |
1980年 | 4篇 |
1978年 | 2篇 |
1977年 | 2篇 |
1976年 | 5篇 |
1965年 | 1篇 |
1964年 | 1篇 |
1963年 | 1篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
71.
72.
Rapidly growing cities face new and compounding health challenges, leading governments and donors to seek innovative ways to support healthier, more resilient urban growth. One such approach is the systems mapping process developed by Engaging Inquiry (EI) for the USAID-funded Building Healthy Cities project (BHC) in four cities in Asia. This paper provides details on the theory and methods of the process. While systems mapping is not new, the approach detailed in this paper has been uniquely adapted to the purpose of municipal planning. Strategic stakeholder engagement, including participatory workshops with a diverse group of stakeholders, is at the core of this approach and led to deeper insights, greater buy-in, and shared understanding of the city’s unique opportunities and challenges. This innovative mapping process is a powerful tool for defining municipal priorities within growing cities across the globe, where the situation is rapidly evolving. It can be used to provide evidence-based information on where to invest to gain the biggest impact on specific goals. This paper is part of a collection in this issue providing a detailed accounting of BHC’s systems mapping approach across four project cities. 相似文献
73.
Background: Obesity relates to impaired olfactory function. Abnormal olfactory function is also associated with poor diet; however, whether obesity-related markers shape this relationship is unknown. Methods: Cross-sectional analysis (n = 1415, age > 40 years) of NHANES 2013–2014 examined body fat percent (BF%) and waist circumference (WC) as moderators of the relationship between olfactory function and diet. The olfactory function test identified adults with olfactory dysfunction (OD) or normal olfaction (NO). Validated 24 h recall captured nutrient intake and Healthy Eating Index-2010 scores. BF% and WC were measured. We tested adjusted linear regression models, with an interaction term between olfactory function and BF%/WC, for each nutrient or HEI score, and reported coefficients (β), standard errors (SE), and p-values for significant interaction terms. Results: In OD (9.5%; mean age 50.9 years, 95% CI 49.6, 52.2) compared with NO (mean age 49.3 years, 95% CI 48.8, 49.9), higher BF% was associated with higher intake of saturated fat (β (SE): 0.2 (0.1) g; p = 0.06) and percent of total calories from total fat (0.2 (0.1); p = 0.07), saturated (0.1 (0.004); p = 0.02), and monounsaturated fat (0.1 (0.1); p = 0.08); lower percent of total calories from carbohydrates (−0.2 (0.1); p = 0.09) and mg of sodium (−17.8 (09.6); p = 0.08); and a higher (healthier) refined grain score (0.1 (0.1); p = 0.04). Higher WC was associated with higher refined grain scores (0.01 (0.02); p = 0.01) in OD. Conclusion: BF% may shape dietary intake and quality in OD. Longitudinal studies are needed to elucidate the directionality of these relationships and develop strategies to improve dietary intake among OD. 相似文献
74.
Genomic characterization of pediatric B‐lymphoblastic lymphoma and B‐lymphoblastic leukemia using formalin‐fixed tissues 下载免费PDF全文
75.
76.
77.
78.
79.
80.
PURPOSE OF REVIEW: The present review describes recent advances in our understanding about the epidemiology of human papillomavirus infection among female adolescents and describes several adolescent-specific issues related to administering human papillomavirus vaccines. RECENT FINDINGS: National estimates demonstrate that human papillomavirus infection is most prevalent among adolescents and young adults. Parents, patients, and providers have a high interest in vaccination against this virus, but current patterns of adolescent healthcare utilization suggest that changes in adolescent preventive care delivery may be needed to provide these vaccines in a timely manner. Debate over whether adolescents should be legally allowed to self-consent to vaccination is another issue that remains unresolved and could have a substantial impact on vaccination rates. Legislation on school entry requirements related to human papillomavirus vaccination has been introduced in many states as a mechanism to circumvent some of these concerns, but the details of this legislation and its effect on adolescent vaccine utilization remain to be determined. SUMMARY: Female adolescents are at a high risk for human papillomavirus infection and are likely to derive significant benefits from vaccination against this virus. However, administering human papillomavirus vaccines to this age group will require providers to be familiar with several issues unique to the adolescent population. 相似文献