全文获取类型
收费全文 | 13498篇 |
免费 | 1113篇 |
国内免费 | 25篇 |
专业分类
耳鼻咽喉 | 187篇 |
儿科学 | 533篇 |
妇产科学 | 375篇 |
基础医学 | 1648篇 |
口腔科学 | 115篇 |
临床医学 | 1513篇 |
内科学 | 2414篇 |
皮肤病学 | 254篇 |
神经病学 | 1548篇 |
特种医学 | 292篇 |
外科学 | 1480篇 |
综合类 | 86篇 |
一般理论 | 20篇 |
预防医学 | 2099篇 |
眼科学 | 324篇 |
药学 | 807篇 |
1篇 | |
中国医学 | 15篇 |
肿瘤学 | 925篇 |
出版年
2024年 | 47篇 |
2023年 | 315篇 |
2022年 | 475篇 |
2021年 | 927篇 |
2020年 | 535篇 |
2019年 | 788篇 |
2018年 | 853篇 |
2017年 | 571篇 |
2016年 | 589篇 |
2015年 | 569篇 |
2014年 | 712篇 |
2013年 | 865篇 |
2012年 | 1254篇 |
2011年 | 1222篇 |
2010年 | 588篇 |
2009年 | 478篇 |
2008年 | 774篇 |
2007年 | 709篇 |
2006年 | 542篇 |
2005年 | 495篇 |
2004年 | 402篇 |
2003年 | 327篇 |
2002年 | 251篇 |
2001年 | 34篇 |
2000年 | 23篇 |
1999年 | 22篇 |
1998年 | 38篇 |
1997年 | 26篇 |
1996年 | 17篇 |
1995年 | 20篇 |
1994年 | 17篇 |
1993年 | 18篇 |
1992年 | 8篇 |
1991年 | 9篇 |
1990年 | 6篇 |
1989年 | 7篇 |
1987年 | 3篇 |
1985年 | 5篇 |
1984年 | 6篇 |
1983年 | 8篇 |
1982年 | 13篇 |
1981年 | 7篇 |
1980年 | 8篇 |
1979年 | 3篇 |
1978年 | 7篇 |
1976年 | 5篇 |
1973年 | 3篇 |
1972年 | 3篇 |
1927年 | 2篇 |
1924年 | 2篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
61.
Guz Samantha Hecht Hillary K. Kattari Shanna K. Gross E. B. Ross Emily 《Archives of sexual behavior》2022,51(4):2135-2145
Archives of Sexual Behavior - Research on asexuality as a part of the experience of human sexuality has increased over the last two decades. However, there has not yet been a systematic review of... 相似文献
62.
63.
Corinne N. Thompson Scott Hughes Stephanie Ngai Jennifer Baumgartner Jade C. Wang Emily McGibbon Katelynn Devinney Elizabeth Luoma Daniel Bertolino Christina Hwang Kelsey Kepler Cybill Del Castillo Melissa Hopkins Henry Lee Andrea K. DeVito Jennifer L. Rakeman PhD Anne D. Fine 《MMWR. Morbidity and mortality weekly report》2021,70(19):712
64.
Kali S. Thomas Emily Corneau Courtney H. Van Houtven Portia Cornell David Aron David M. Dosa Susan M. Allen 《Health services research》2021,56(3):389
ObjectiveTo examine characteristics that are associated with receipt of Aid and Attendance (A&A), an enhanced pension benefit for Veterans who qualify on the basis of needing daily assistance, among Veterans who receive pensions.Data sourcesSecondary data analysis of 2016‐2017 national VA administrative data linked with Medicare claims.Study designObservational study examining sociodemographic, medical, and healthcare utilization characteristics associated with receipt of A&A among Veterans receiving pension.Principal findingsIn 2017, 9.7% of Veterans with pension newly received the A&A benefit. The probability of receiving A&A among black and Hispanic pensioners was 4.6 percentage points lower than for white pensioners (95%CI = −0.051, −0.042). Married Veterans receiving pension had a 4.4‐percentage point higher probability of receiving A&A (95%CI = 0.039, 0.048). Most indicators of need for assistance (eg, home health utilization, dementia, stroke) were associated with significantly higher probabilities of receiving A&A, with notable exceptions: pensioners with a diagnosis of Post‐Traumatic Stress Disorder (marginal effect = −0.029 95%CI = −0.037, −0.021) or enrolled in Medicaid (marginal effect = −0.053, 95%CI = −0.057, −0.050) had lower probabilities of receiving A&A. Unadjusted and adjusted rates of receiving A&A among Veterans receiving pension varied by VA medical center.ConclusionsThis study identified potential inequities in receipt of the A&A enhanced pension among a sample of Veterans receiving pension. Increased Veteran outreach, provider education, and VA office coordination can potentially reduce inequities in access to this benefit. 相似文献
65.
66.
67.
Until the 1960s, the sexuality of people with mental retardation was handled by denial and suppression. The eugenics movement of 1880–1940 led to forced mass sterilization and the segregation of these members of our society. The civil rights movement and the sexual revolution were among the catalysts for change as was the move toward normalization and deinstitutionalization of people with mental retardation. In the last 25 years, parents and professionals have begun to work together to find ways to help mentally handicapped individuals to understand their sexuality and to engage in appropriate self-affirming sexual behaviors. We have established goals, guidelines, and curricula for sexuality education. We have trained parents and staff and developed policies for handling sensitive issues, such as sterilization and problematic sexual expression. The AIDS epidemic has provided new impetus for improving education and training in this emerging field.A.C.S.W.Private practice (as a consultant, lecturer, and trainer in sexuality and mental retardation). 相似文献
68.
Duration discrimination in listeners with cochlear hearing loss: effects of stimulus type and frequency. 总被引:3,自引:0,他引:3
This study examined the effects of cochlear hearing loss on the ability to discriminate increments in the duration of a stimulus under conditions where the frequency and/or amplitude of the stimulus change dynamically. Three stimulus types were used: pure tones, frequency-modulated tones, and narrow bands of noise. The carrier/center frequency of each 250-ms stimulus either remained constant at 1035 Hz or varied randomly from presentation to presentation across the frequency range 432-2804 Hz. Two groups of listeners participated: 9 with bilateral cochlear hearing loss and 7 with normal hearing sensitivity. The results showed no differences in performance between the 2 groups. However, both groups showed poorer duration discrimination for the conditions where the carrier/center frequency changed randomly than for the conditions where the carrier/center frequency remained constant. In addition, performance was poorer for the narrowband noise stimuli than for the tonal stimuli. This pattern of results suggests that across-frequency temporal judgments are more difficult than isofrequency temporal judgments, but that cochlear hearing loss does not exacerbate this difficulty per se. 相似文献
69.
70.
Emily S Patterson Emilie M Roth David D Woods Renée Chow José Orlando Gomes 《International journal for quality in health care》2004,16(2):125-132
OBJECTIVE: To describe strategies employed during handoffs in four settings with high consequences for failure. DESIGN: ANALYSIS: of observational data for evidence of use of 21 handoff strategies. SETTING: NASA Johnson Space Center in Texas, nuclear power generation plants in Canada, a railroad dispatch center in the United States, and an ambulance dispatch center in Toronto. MAIN MEASURE: Evidence of 21 handoff strategies from observations and interviews. RESULTS: Nineteen of 21 strategies were used in at least one domain, on at least an 'as needed' basis. CONCLUSIONS: An understanding of how handoffs are conducted in settings with high consequences for failure can jumpstart endeavors to modify handoffs to improve patient safety. 相似文献