全文获取类型
收费全文 | 5676篇 |
免费 | 502篇 |
国内免费 | 49篇 |
专业分类
耳鼻咽喉 | 45篇 |
儿科学 | 147篇 |
妇产科学 | 119篇 |
基础医学 | 491篇 |
口腔科学 | 133篇 |
临床医学 | 741篇 |
内科学 | 994篇 |
皮肤病学 | 87篇 |
神经病学 | 818篇 |
特种医学 | 94篇 |
外科学 | 402篇 |
综合类 | 193篇 |
一般理论 | 6篇 |
预防医学 | 1256篇 |
眼科学 | 64篇 |
药学 | 444篇 |
中国医学 | 23篇 |
肿瘤学 | 170篇 |
出版年
2024年 | 13篇 |
2023年 | 115篇 |
2022年 | 100篇 |
2021年 | 228篇 |
2020年 | 262篇 |
2019年 | 288篇 |
2018年 | 255篇 |
2017年 | 249篇 |
2016年 | 272篇 |
2015年 | 209篇 |
2014年 | 271篇 |
2013年 | 812篇 |
2012年 | 253篇 |
2011年 | 219篇 |
2010年 | 214篇 |
2009年 | 218篇 |
2008年 | 240篇 |
2007年 | 225篇 |
2006年 | 244篇 |
2005年 | 203篇 |
2004年 | 185篇 |
2003年 | 177篇 |
2002年 | 155篇 |
2001年 | 117篇 |
2000年 | 94篇 |
1999年 | 81篇 |
1998年 | 89篇 |
1997年 | 76篇 |
1996年 | 53篇 |
1995年 | 63篇 |
1994年 | 32篇 |
1993年 | 36篇 |
1992年 | 32篇 |
1991年 | 30篇 |
1990年 | 19篇 |
1989年 | 12篇 |
1988年 | 9篇 |
1987年 | 10篇 |
1986年 | 5篇 |
1985年 | 10篇 |
1984年 | 11篇 |
1983年 | 2篇 |
1982年 | 7篇 |
1981年 | 7篇 |
1980年 | 8篇 |
1979年 | 2篇 |
1978年 | 2篇 |
1977年 | 6篇 |
1976年 | 2篇 |
1975年 | 5篇 |
排序方式: 共有6227条查询结果,搜索用时 15 毫秒
51.
OBJECTIVE: To investigate how illness characteristics influence children's responses to ill peers. METHODS: A sample of 363 4th and 5th graders responded to a vignette describing a peer with abdominal pain. In a 2 x 2 x 2 x 2 design, conditions varied by (a) evidence for organic disease, (b) presence of stress, (c) sex of vignette character, and (d) sex of respondent. Children rated symptom severity, liking for the peer, and whether the peer should be excused from normal responsibilities. RESULTS: Same sex preferences significantly influenced children's liking for a peer. Children viewed symptoms with an organic etiology as more severe than those without one. Under certain conditions, symptom severity judgments mediated the relation between the presence of organic disease and (a) liking and (b) granting relief from responsibility. The presence of stress had little effect on ratings of symptom severity, liking, or relief from responsibility. CONCLUSIONS: Gender and evidence of organic disease influence children's perceptions of and responses to symptomatic peers. 相似文献
52.
BackgroundDespite the importance of diversity in advancing scientific progress, diversity among leading authors in arthroplasty has not been examined. This study aimed to identify, characterize, and assess disparities among leading authors in arthroplasty literature from 2002 to 2019.MethodsArticles published between 2002 and 2019 from 12 academic journals that publish orthopedic and arthroplasty research were extracted from PubMed. Original articles containing keywords related to arthroplasty were analyzed. Author gender was assigned using the Genderize algorithm. Gender and characterization of the top 100 male and female authors utilized available information on academic profiles.ResultsFrom the 14,692 articles that met inclusion criteria, the genders of 23,626 unique authors were identified. Women were less likely than men to publish 5 years after beginning their publishing careers (adjusted odds ratio 0.51, 95% confidence interval 0.45-0.57, P < .001). Of the top 100 authors, 96 were men, while only 4 were women. Orthopedic surgeons made up 93 of 100 top authors, of which 92 were men and 1 was a woman. Among the top 10 publishing female and male authors, 10 of 10 men were orthopedic surgeons, only 2 of 10 women were physicians, and only one was an attending orthopedic surgeon.ConclusionWhile the majority of authors with high arthroplasty publication volume were orthopedic surgeons, there were significant gender disparities among the leading researchers. We should continue working to increase gender representation and supporting the research careers of women in arthroplasty. 相似文献
53.
Despite increasing numbers of women entering anaesthesia, they remain persistently under-represented within academic anaesthesia and research. Gender discordance is seen across multiple aspects of research, including authorship, editorship, peer review, grant receipt, speaking and leading. Women are also under-represented at higher faculty ranks and in department chair positions. These inequities are further magnified for women with intersectional identities, such as those who identify as Black, indigenous and women of colour. Several barriers to participation in research have been identified to date, including a disproportionate amount of family responsibilities, a disproportionate burden of clinical service, gender bias, sexual harassment and the gender pay gap. Several strategies to improve gender equity have been proposed. Increasing access to formal mentorship of women in academic medicine is frequently cited and has been used by healthcare institutions and medical societies. Senior faculty and leaders must also be conscious of including women in sponsorship and networking opportunities. Institutions should provide support for parents of all genders, including supportive parental leave policies and flexible work models. Women should also be materially supported to attend formal educational conferences targeted for women, aimed at improving networking, peer support and professional development. Finally, leaders must display a clear intolerance for sexual harassment and discrimination to drive culture change. Peers and leaders alike, of all genders, can act as upstanders and speak up on behalf of targets of discrimination, both in the moment or after the fact. Gender inequities have persisted for far too long and can no longer be ignored. Diversifying the anaesthesia research community is essential to the future of the field. 相似文献
54.
55.
Trevor A. Hart David M. Moore Syed W. Noor Nathan Lachowsky Daniel Grace Joseph Cox Shayna Skakoon-Sparling Jody Jollimore Abbie Parlette Allan Lal Herak Apelian Jordan M. Sang Darrell H. S. Tan Gilles Lambert the Engage Study Team 《Canadian journal of public health. Revue canadienne de santé publique》2021,112(6):1020
ObjectivesThe last Canadian biobehavioural surveillance study of HIV and other sexually transmitted and blood-borne infections (STBBI) among gay, bisexual and other men who have sex with men (GBM) was conducted in 2010. We designed a study to measure STBBI prevalence among GBM in metropolitan Montreal, Toronto and Vancouver and to document related preventive and risk behaviours.MethodsThe Engage Cohort Study used respondent-driven sampling (RDS) to recruit GBM who reported sex with another man in the past 6 months. At baseline, we examined recruitment characteristics of the samples, and the RDS-II-adjusted distributions of socio-demographics, laboratory-confirmed HIV and other STBBI prevalence, and related behaviours, with a focus on univariate differences among cities.ResultsA total of 2449 GBM were recruited from February 2017 to August 2019. HIV prevalence was lower in Montreal (14.2%) than in Toronto (22.2%) or Vancouver (20.4%). History of syphilis infection was similar across cities (14–16%). Vancouver had more HIV-negative/unknown participants who reported never being HIV tested (18.6%) than Toronto (12.9%) or Montreal (11.5%). Both Montreal (74.9%) and Vancouver (78.8%) had higher proportions of men who tested for another STBBI in the past 6 months than Toronto (67.4%). Vancouver had a higher proportion of men who used pre-exposure prophylaxis (PrEP) in the past 6 months (18.9%) than Toronto (11.1%) or Montreal (9.6%).ConclusionThe three largest cities of Canada differed in HIV prevalence, STBBI testing and PrEP use among GBM. Our findings also suggest the need for scale-up of both PrEP and STI testing among GBM in Canada. 相似文献
56.
57.
58.
59.
60.
Supportive and Negative Responses in the Partner Relationship: Their Association with Psychological Adjustment Among Individuals with Cancer 总被引:4,自引:0,他引:4
Sharon L. Manne Kathryn L. Taylor James Dougherty Nancy Kemeny 《Journal of behavioral medicine》1997,20(2):101-125
This study examined the association between positive and negative aspects of spouse responses and psychological adjustment among 15S individuals with cancer. Two contextual variables, gender and disease-related functional impairment, were taken into account when examining the association between spouse responses and patient psychological distress and well-being. Results indicated that negative aspects of close relationships played a comparatively stronger role than positive aspects in their associations with both psychological distress and well-being. For negative spouse responses, patient gender did not moderate the effects of these responses upon psychological outcomes. For positive aspects of spouse support, both gender and functional disability moderated the association between spouse support and psychological outcomes. These findings are integrated with the general literature on positive and negative aspects of close relationships. Implications for clinical interventions are also discussed. 相似文献