全文获取类型
收费全文 | 15038篇 |
免费 | 1023篇 |
国内免费 | 51篇 |
专业分类
耳鼻咽喉 | 99篇 |
儿科学 | 519篇 |
妇产科学 | 474篇 |
基础医学 | 1926篇 |
口腔科学 | 219篇 |
临床医学 | 2125篇 |
内科学 | 2766篇 |
皮肤病学 | 281篇 |
神经病学 | 1633篇 |
特种医学 | 303篇 |
外科学 | 1315篇 |
综合类 | 126篇 |
现状与发展 | 1篇 |
一般理论 | 16篇 |
预防医学 | 2061篇 |
眼科学 | 342篇 |
药学 | 968篇 |
中国医学 | 15篇 |
肿瘤学 | 923篇 |
出版年
2023年 | 94篇 |
2022年 | 160篇 |
2021年 | 353篇 |
2020年 | 201篇 |
2019年 | 374篇 |
2018年 | 424篇 |
2017年 | 279篇 |
2016年 | 320篇 |
2015年 | 392篇 |
2014年 | 529篇 |
2013年 | 808篇 |
2012年 | 1114篇 |
2011年 | 1188篇 |
2010年 | 649篇 |
2009年 | 527篇 |
2008年 | 1046篇 |
2007年 | 1066篇 |
2006年 | 1066篇 |
2005年 | 1032篇 |
2004年 | 961篇 |
2003年 | 915篇 |
2002年 | 871篇 |
2001年 | 120篇 |
2000年 | 83篇 |
1999年 | 113篇 |
1998年 | 144篇 |
1997年 | 136篇 |
1996年 | 126篇 |
1995年 | 122篇 |
1994年 | 70篇 |
1993年 | 94篇 |
1992年 | 69篇 |
1991年 | 61篇 |
1990年 | 56篇 |
1989年 | 45篇 |
1988年 | 51篇 |
1987年 | 35篇 |
1986年 | 36篇 |
1985年 | 37篇 |
1984年 | 45篇 |
1983年 | 41篇 |
1982年 | 50篇 |
1981年 | 47篇 |
1980年 | 36篇 |
1979年 | 16篇 |
1978年 | 19篇 |
1977年 | 11篇 |
1976年 | 10篇 |
1975年 | 10篇 |
1972年 | 12篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
1.
2.
Amanda Bolderston Jackie Middleton Cynthia Palmaria Susan Cauti Susan Fawcett 《Journal of Medical Imaging and Radiation Sciences》2021,52(2):160-163
Lesbian, gay, bisexual, transgender, queer and two-spirit plus (LGBTQ2S+) people have distinct healthcare needs that may be unaddressed in many undergraduate healthcare curricula. The Radiation Therapy Program (RADTH) at the University of Alberta underwent a review of the three-year didactic curriculum using an online survey. The survey sought to ascertain if, where and how topics related to LGBTQ2S + healthcare are taught. Results indicated that out of 10 RADTH program faculty respondents, three teach related topics. The total time dedicated within the three-year curriculum was approximately three and a half hours. Other findings showed that faculty are interested in receiving more education in this area and would favour discussions about how to incorporate these themes into appropriate courses. This preliminary investigation demonstrated that there has been some initial work in this area, but there is more to be done. 相似文献
3.
4.
5.
Erin L. Sutfin Jennifer Cornacchione Ross Allison J. Lazard Elizabeth Orlan Cynthia K. Suerken Kimberly D. Wiseman 《Health communication》2019,34(3):343-351
ABSTRACTAdolescents and young adults smoke waterpipe tobacco (WT) and cigarillos, at least in part, based on erroneous beliefs that these products are safer than cigarettes. To address this challenge, we used a systematic, three-phase process to develop a health communication campaign to discourage WT and cigarillo smoking among at-risk (tobacco users and susceptible non-users) 16- to 25-year-olds. In Phase 1, we used a national phone survey (N = 896) to determine salient message beliefs. Participants reported constituents (i.e., harmful chemicals) emitted by the products were worrisome. In Phase 2, we developed and evaluated four message executions, with varying imagery, tone, and unappealing products with the same constituents, using focus groups (N = 38). Participants rated one execution highly, resulting in our development of a campaign where each message: (1) identified a tobacco product and constituent in the smoke; (2) included an image of an unappealing product containing the constituent (e.g., pesticides, gasoline) to grab attention; and (3) used a humorous sarcastic tone. In Phase 3, we tested the campaign messages (17 intervention and six control) with a nationally representative online survey (N = 1,636). Participants rated intervention and control messages highly with few differences between them. Exposure to messages resulted in significant increases in all risk beliefs from pre to post (p < 0.05). For WT, intervention messages increased beliefs about addiction more than control messages (p < 0.05). This systematic, iterative approach resulted in messages that show promise for discouraging WT and cigarillo use. 相似文献
6.
7.
8.
ATM-dependent DNA damage surveillance in T-cell development and leukemogenesis: the DSB connection 总被引:1,自引:0,他引:1
Summary: The immune system is capable of recognizing and eliminating an enormous array of pathogens due to the extremely diverse antigen receptor repertoire of T and B lymphocytes. However, the development of lymphocytes bearing receptors with unique specificities requires the generation of programmed double strand breaks (DSBs) coupled with bursts of proliferation, rendering lymphocytes susceptible to mutations contributing to oncogenic transformation. Consequently, mechanisms responsible for monitoring global genomic integrity must be activated during lymphocyte development to limit the oncogenic potential of antigen receptor locus recombination. Mutations in ATM (ataxia-telangiectasia mutated), a kinase that coordinates DSB monitoring and the response to DNA damage, result in impaired T-cell development and predispose to T-cell leukemia. Here, we review recent evidence providing insight into the mechanisms by which ATM promotes normal lymphocyte development and protects from neoplastic transformation. 相似文献
9.
10.
PURPOSE: Concern over stigma as a consequence of genetic testing has grown in response to the recent increase in genetic research and testing resulting from the Human Genome Project. However, whether a genetic or hereditary basis necessarily confers a stigma to a condition remains unexamined. METHODS: We performed a qualitative interview study with 86 individuals with one of four conditions: deafness or hearing loss, breast cancer, sickle cell disease, and cystic fibrosis. The first two groups were divided approximately between people who ascribed their conditions to a genetic or hereditary cause and those who did not. RESULTS: Respondents interpreted genetic or hereditary causes and nongenetic causes in a variety of ways. Subjects with breast cancer reported the most consistently negative interpretation of genetic cause. This response concerned future ill health, not an enduring sense of stigma. Deaf and hard of hearing subjects provided the most consistently positive comments about a genetic or hereditary basis to their condition, casting familial hearing loss as a vital component of group and individual identity. Respondents with sickle cell disease and cystic fibrosis offered similar and positive interpretations of the genetic cause of their condition insofar as it meant their conditions were not contagious. CONCLUSIONS: Although some subjects report feeling stigmatized as a result of their condition, this stigmatization is not uniformly associated with the condition's cause, genetic or otherwise. Instead, stigma emerges from a variety of sources in the context of the lived experience of a particular condition. 相似文献