全文获取类型
收费全文 | 12955篇 |
免费 | 1155篇 |
国内免费 | 33篇 |
专业分类
耳鼻咽喉 | 58篇 |
儿科学 | 393篇 |
妇产科学 | 263篇 |
基础医学 | 1924篇 |
口腔科学 | 430篇 |
临床医学 | 1221篇 |
内科学 | 2363篇 |
皮肤病学 | 126篇 |
神经病学 | 1328篇 |
特种医学 | 248篇 |
外科学 | 2086篇 |
综合类 | 215篇 |
现状与发展 | 1篇 |
一般理论 | 15篇 |
预防医学 | 1376篇 |
眼科学 | 381篇 |
药学 | 953篇 |
中国医学 | 22篇 |
肿瘤学 | 740篇 |
出版年
2023年 | 61篇 |
2022年 | 81篇 |
2021年 | 222篇 |
2020年 | 143篇 |
2019年 | 191篇 |
2018年 | 259篇 |
2017年 | 191篇 |
2016年 | 183篇 |
2015年 | 270篇 |
2014年 | 355篇 |
2013年 | 533篇 |
2012年 | 773篇 |
2011年 | 839篇 |
2010年 | 465篇 |
2009年 | 448篇 |
2008年 | 696篇 |
2007年 | 756篇 |
2006年 | 725篇 |
2005年 | 775篇 |
2004年 | 709篇 |
2003年 | 641篇 |
2002年 | 661篇 |
2001年 | 255篇 |
2000年 | 264篇 |
1999年 | 253篇 |
1998年 | 158篇 |
1997年 | 132篇 |
1996年 | 111篇 |
1995年 | 116篇 |
1994年 | 92篇 |
1993年 | 93篇 |
1992年 | 168篇 |
1991年 | 170篇 |
1990年 | 162篇 |
1989年 | 156篇 |
1988年 | 173篇 |
1987年 | 132篇 |
1986年 | 147篇 |
1985年 | 124篇 |
1984年 | 129篇 |
1983年 | 113篇 |
1982年 | 69篇 |
1981年 | 81篇 |
1980年 | 77篇 |
1979年 | 104篇 |
1978年 | 74篇 |
1977年 | 59篇 |
1976年 | 59篇 |
1972年 | 56篇 |
1971年 | 57篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
81.
Andrea M. Mayrhofer Nan Greenwood Nigel Smeeton Kathryn Almack Louise Buckingham Shaheen Shora Claire Goodman 《Health & social care in the community》2021,29(3):664-671
Although literature on postdiagnostic support for people affected by young onset dementia acknowledges financial concerns, this topic has remained underresearched. The aim of this study was to explore the financial impact of a diagnosis of young onset dementia on individuals and families. An online survey, comprising binary yes/no, multiple-response and open-ended questions, was codesigned with people living with young onset dementia. The survey was promoted via networks and online platforms. Data were collected from August to October 2019. Survey respondents across the United Kingdom (n = 55) who had received a diagnosis of young onset dementia were aged between 45 and 64, were at different stages of dementia and had been diagnosed with thirteen different types of dementia. Of the 55 respondents, 71% (n = 39) had received assistance from family members when completing the survey. The main financial impact of a diagnosis of young onset dementia resulted from premature loss of income and reduced and often deferred pension entitlements. In some cases, care-costs became unaffordable. Lack of clarity of processes and procedures around needs assessments, carers' assessments and financial assessments by different organisations resulted in some families having to ask for legal advice and, in some cases, involved lengthy appeal processes. Future research needs to involve Adult Social Care and Third Sector organisations to help codesign and test financial management interventions to support people affected by this progressive health condition. 相似文献
82.
83.
This paper describes the establishment of faculties of medical library and information science in four of the national medical universities in the People's Republic of China. These faculties were established in the mid-1980s, and each is fully integrated into its university. Students receive three years of non-clinical medical training followed by two years of training in library and information science. The first students to follow this five-year curriculum will graduate in 1992. 相似文献
84.
85.
86.
A case is presented of an eight-year-old child with a mediastinal tumour, who had developed acute renal failure following the institution of steroid therapy. Intrapleural analgesia was successfully used for the insertion of a peritoneal dialysis catheter so that the considerable risks of general anaesthesia were avoided. Subsequent dialysis allowed chemotherapy to commence and, as a result of the shrinkage in tumour size, general anaesthesia was administered safely two days later. The purpose of this report is to highlight the use of intrapleural analgesia in children as an alternative to general anaesthesia, when the latter is contraindicated. The mechanism of action of intra-pleural analgesia and the risks of anaesthesia in the presence of a mediastinal tumour are discussed. 相似文献
87.
Fottler MD Crawford MA Quintana JB White JB 《Hospital & health services administration》1995,40(2):278-295
High turnover rates among hospital nurses demand rigorous and valid processes of research to determine the reasons motivating such attrition. In most hospitals, the exit interview often provides the only relevant data. The case study reported here examines the relative effectiveness of exit interviews and an employee attitude survey in generating data that are useful in managing nurse retention. The conclusion reached is that the attitude survey generates more data and higher-quality data. Further, the study shows that the use of open-ended questions can provide useful information and probably should be the starting point in developing or supplementing an attitude survey for nurses. Recommendations for improving the usefulness and validity of nurse attitude surveys and exit interviews in managing nurse retention are provided. 相似文献
88.
The construct of transformation has been presented in many research studies as the epitome of living with a chronic illness. Because it has been inadequately defined, however, many other concepts (e.g., hope, meaning, control) are used in ways that suggest considerable overlap and correspondence with transformation. This article represents an attempt to explicate the structures and processes of transformation as they were revealed in a qualitative inquiry into the experience of individuals with Type I diabetes. In the accounts constructed with participants in this study, the process of personal transformation was significant in the attainment of healthy outcomes. The authors describe this transformation and examine its relationship to control and to the valued outcomes of intensified sense of self, meaning, and mastery. 相似文献
89.
The influence of operative technique on the formation of incomplete cement mantles in the sagittal plane has been rarely considered in the literature. In this article, we discuss the influence of the anatomy of the proximal femur on the formation of incomplete cement mantles and discuss how their incidence can be reduced by correct component positioning. 相似文献
90.
Meyer JS Rauch GM Crawford K Rauch RA Konno S Akiyama H Terayama Y Haque A 《International journal of geriatric psychiatry》1999,14(12):1050-1061
OBJECTIVES: Factors accelerating cerebral degenerative changes represent potentially modifiable risks for cognitive decline. Putative risk factors accelerating subtle cognitive decline and dementia were correlated with repeated measures of cerebral atrophy, CT densitometry, perfusions and cognitive testing among neurologically and cognitively normative ageing volunteers. METHODS: Two hundred and twenty-four normative subjects at increased risk for cognitive decline were admitted to the study. Mean entry age was 59. 5+/-15.8 years. Mean follow-up is 4.3+/-3.1 years. At follow-up, 22 developed subtle cognitive decline (deltaCCSE>/=-3), 19 became demented, eight with vascular type (VAD) and 11 with Alzheimer's type (DAT) and 183 remain cognitively unchanged. Standardized questionnaires, medical, neuropsychological, neurological and blood work examinations were obtained. Cerebral atrophy, tissue densities and perfusions were measured by xenon-enhanced CT. RESULTS: After age 60, cerebral atrophy, ventricular enlargement, polio- and leuko-araiosis geometrically increased as perfusions declined. Risk factors accelerating perfusional decline, cerebral atrophy, polio-araiosis and leuko-araiosis (thinning of grey-white matter densities) were: transient ischaemic attacks (TIAs), hypertension, smoking, hyperlipidemia, male gender. At age 71.5+/-11.9, subtle cognitive decline began, accelerated by TIAs, hypertension and heart disease. Leuko-araiosis began before cognitive decline. TIAs, hypertension and hyperlipidemia correlated with VAD. Excessive cortical perfusional decreases and cerebral atrophy correlated with cognitive decline. Family history of neurodegenerative disease correlated with DAT. CONCLUSION: TIAs, hypertension, hyperlipidemia, smoking and male gender accelerate cerebral degenerative changes, cognitive decline and dementia. 相似文献