全文获取类型
收费全文 | 3024篇 |
免费 | 631篇 |
国内免费 | 32篇 |
专业分类
耳鼻咽喉 | 55篇 |
儿科学 | 61篇 |
妇产科学 | 49篇 |
基础医学 | 176篇 |
口腔科学 | 165篇 |
临床医学 | 1079篇 |
内科学 | 367篇 |
皮肤病学 | 38篇 |
神经病学 | 180篇 |
特种医学 | 86篇 |
外科学 | 316篇 |
综合类 | 158篇 |
一般理论 | 1篇 |
预防医学 | 488篇 |
眼科学 | 23篇 |
药学 | 227篇 |
1篇 | |
中国医学 | 105篇 |
肿瘤学 | 112篇 |
出版年
2024年 | 46篇 |
2023年 | 151篇 |
2022年 | 160篇 |
2021年 | 186篇 |
2020年 | 184篇 |
2019年 | 273篇 |
2018年 | 221篇 |
2017年 | 200篇 |
2016年 | 188篇 |
2015年 | 179篇 |
2014年 | 218篇 |
2013年 | 323篇 |
2012年 | 165篇 |
2011年 | 201篇 |
2010年 | 155篇 |
2009年 | 107篇 |
2008年 | 147篇 |
2007年 | 103篇 |
2006年 | 105篇 |
2005年 | 89篇 |
2004年 | 51篇 |
2003年 | 64篇 |
2002年 | 41篇 |
2001年 | 41篇 |
2000年 | 32篇 |
1999年 | 18篇 |
1998年 | 6篇 |
1997年 | 11篇 |
1996年 | 4篇 |
1995年 | 2篇 |
1994年 | 3篇 |
1993年 | 2篇 |
1992年 | 1篇 |
1991年 | 1篇 |
1990年 | 2篇 |
1989年 | 1篇 |
1988年 | 1篇 |
1985年 | 1篇 |
1984年 | 2篇 |
1981年 | 1篇 |
1978年 | 1篇 |
排序方式: 共有3687条查询结果,搜索用时 15 毫秒
71.
A Model Program of Community‐Based Supports for Older Adults at Risk of Nursing Facility Placement 下载免费PDF全文
Alan B. Stevens PhD Angela K. Hochhalter PhD Rashmita Basu PhD Emily R. Smith PhD MSPH Jennifer L. Thorud MPH Chanhee Jo PhD Richard McGhee BA 《Journal of the American Geriatrics Society》2015,63(12):2601-2609
Transitioning an older adult into a nursing facility is a major life event for older adults (care recipients, CRs) and their family caregivers (CGs). This article describes the implementation of a community living program and presents findings on important health and well‐being indicators. One hundred ninety‐one participants aged 60 and older not eligible for or currently enrolled in Medicaid and meeting four risk domains (functional, health, cognitive/emotional, informal support system) were enrolled for the 10‐month program. Two evidence‐based interventions were blended into a comprehensive community‐based approach to long‐term care that included $750 per month for home care services. Measures were conducted at baseline and 6 and 12 months. Nine (6%) participants did not complete the program because of nursing facility admission. CRs had fewer physician visits (4.1 vs 7.3, P < .001), emergency department visits (0.3 vs 1.4, P < .001), hospital stays (0.4 vs 0.9, P < .001), and total nights in the hospital (0.8 vs 5.1, P < .001) at 12 months than at baseline. Center for Epidemiologic Studies Depression Scale (CES‐D) scores also improved significantly (6.8 vs 9.4, P < .001). CGs had improvements in CES‐D scores (5.9 vs 3.9, P < .001) and CG burden (14.7 s 12.6, P = .01) from baseline to 12 months. This multicomponent program improved the physical and mental health of CGs and CRs at risk of nursing facility placement. Future studies are needed to compare the overall placement rate to determine the success of diverting nursing facility placement in this population of older adults. 相似文献
72.
Implementing newer agents for the management of castrate‐resistant prostate cancer: what is known and what is needed? 下载免费PDF全文
Nicolas Mottet Noel Clarke Maria De Santis Filiberto Zattoni Juan Morote Steven Joniau 《BJU international》2015,115(3):364-372
Men receiving androgen‐deprivation therapy will in time develop metastatic castrate‐resistant prostate cancer (mCRPC). Whilst effective treatment options for mCRPC have traditionally been limited, new agents are becoming available. Since 2010, the number and class of agents available to treat mCRPC has increased dramatically. As such, there is a need for clear guidance on the optimum treatment and sequence of treatments for mCRPC before and after chemotherapy. This evidence‐based statement, reflecting the views of the authors, provides suggestions on the continued relevance of conventional approaches to first‐ and second‐line treatment in mCRPC, the potential role of novel treatments, and factors that may influence the choice of hormonal agents and/or chemotherapy. 相似文献
73.
74.
75.
76.
Majed A. Alghamdi Rajab A. Alzahrani Hashem H. Alhashemi Arwa A. Obaid Ali G. Alghamdi Mohammed A. Aldokhi Amal M. Alghamdi Abdulaziz A. Alghamdi Ahmed S. Qanat Wasil A. Jastaniah Suliman M. Alghamdi 《Saudi medical journal》2020,41(3):261
Objectives:To assess the quality and quantity of Saudi publications in oncology over a 10-year period.Methods:A systematic PubMed search was conducted between January 2008 and December 2017 to retrieve all Saudi oncology publications. Data about the articles was collected. The level of evidence (LOE) was independently assessed by 2 authors. Two 5-year periods (2008-2012 and 2013-2017) were compared using the relevant parameters. Clinicaltrials.gov was also searched for all oncology trials registered in Saudi Arabia.Results:A total of 839 publications met our inclusion criteria. The most common type of research was case series, totaling 32% of all publications. Clinical trials formed less than 2% of the total. The LOE was I, II, III, and IV in 0.3%, 2.1%, 58.4%, and 39.3% of the included publications, respectively. The LOE was the same in the 2 periods. There were more publications in international journals (p=0.004), more international collaborations (p=0.001), and higher journal impact factors (p=0.037) in 2013-2017 than in 2008-2012. Only 76 registered clinical trials were found in the Clinicaltrials.gov registry.Conclusion:Despite an increase in the number of Saudi publications in the field of oncology over time, the LOE did not change. There were, however, some improvements in the international collaboration and journal impact factor, as well as an increase in the number of studies published in international journals. These observations call for a national strategy to improve oncology research in Saudi Arabia. 相似文献
77.
现代人体检测仪器大量使用后,人体检测指标异常的出现对中医传统辨治理论体系、疗效评价、治疗诉求等方面产生巨大的冲击,导致中医学对现代检测指标的认知、治疗、疗效评价产生一些系列问题。因此,对现代人体检测指标异常进行系统而规范的中医辨治研究,探讨其中蕴含的病因病机信息,使之成为辨证依据、治疗靶的,进而指导中医临床处方与疗效评价,最终将现代人体检测指标植入中医辨治体系之中,是解决以上问题的关键途径。对现代人体检测指标的异常进行中医辨治学研究,可以丰富临床资料,拓展辨治范围,强化疾病防治,准确了解病情,加深病机认识,辅助中医诊断,彰显中医疗效,促进学术发展,具有重要的意义。 相似文献
78.
79.
Expert testimony is being used increasingly in child sexual assault cases. This study extended a prior study that examined factors related to expert testimony (evidence strength, coherence and credentials of the expert) on ratings of guilt and overall verdict. Specifically, we replicated our prior study but with two modifications: we used community samples as opposed to university students, and participants made their decisions in groups of 12 (as in the case of juries where one decision represents the overall group) rather than having participants decide and submit their verdicts and guilt ratings individually. Consistent with the prior (less ecologically valid) study, credentials of the expert had negligible impact. Evidence that was high in strength elicited a relatively high guilt rating even when the testimony was low in coherence. Further, it appears that when participants deliberate in a group (as in the case of juries) they are more conservative in their judgements (i.e., they are less likely to give a guilty verdict) compared to individual jurors who make their decisions alone. These findings suggest that caution must be exercised when drawing conclusions about the generalisability of prior research findings where participants did not engage in group deliberation. 相似文献
80.
Ian R. Coyle 《Psychiatry, Psychology and Law》2013,20(2):270-296
Preventive detention schemes rely on assessments of risk carried out by forensic practitioners. Corrective services departments and other organs of the state inevitably present the approaches they adopt and the tools they employ in this endeavour as being “best practice” and “evidence based”. Typically these assessments are conducted according to a bureaucratic template and are based on a selected suite of tests that are heavily biased towards actuarial assessment. The validity of this approach is gravely suspect as is the failure of many forensic professionals to properly identify the diagnostic accuracy/inaccuracy of the tests and methods they rely upon in conducting risk assessments. This article iterates the methodological and evidentiary problems with risk assessment of sexual offenders. It is concluded that common extant approaches lack scientific objectivity and fail to provide the courts with cogent evidence. As a result of these errors in investigatory processes miscarriages of justice are inevitable. 相似文献