全文获取类型
收费全文 | 19373篇 |
免费 | 1529篇 |
国内免费 | 38篇 |
专业分类
耳鼻咽喉 | 135篇 |
儿科学 | 726篇 |
妇产科学 | 535篇 |
基础医学 | 2464篇 |
口腔科学 | 237篇 |
临床医学 | 2265篇 |
内科学 | 3710篇 |
皮肤病学 | 309篇 |
神经病学 | 2157篇 |
特种医学 | 321篇 |
外国民族医学 | 5篇 |
外科学 | 2046篇 |
综合类 | 182篇 |
一般理论 | 67篇 |
预防医学 | 2787篇 |
眼科学 | 285篇 |
药学 | 1252篇 |
1篇 | |
中国医学 | 38篇 |
肿瘤学 | 1418篇 |
出版年
2024年 | 43篇 |
2023年 | 281篇 |
2022年 | 486篇 |
2021年 | 933篇 |
2020年 | 554篇 |
2019年 | 773篇 |
2018年 | 870篇 |
2017年 | 621篇 |
2016年 | 640篇 |
2015年 | 703篇 |
2014年 | 919篇 |
2013年 | 1177篇 |
2012年 | 1636篇 |
2011年 | 1652篇 |
2010年 | 856篇 |
2009年 | 686篇 |
2008年 | 1173篇 |
2007年 | 1227篇 |
2006年 | 1000篇 |
2005年 | 948篇 |
2004年 | 873篇 |
2003年 | 778篇 |
2002年 | 579篇 |
2001年 | 119篇 |
2000年 | 105篇 |
1999年 | 94篇 |
1998年 | 119篇 |
1997年 | 82篇 |
1996年 | 46篇 |
1995年 | 53篇 |
1994年 | 47篇 |
1993年 | 50篇 |
1992年 | 60篇 |
1991年 | 39篇 |
1990年 | 53篇 |
1989年 | 52篇 |
1988年 | 36篇 |
1987年 | 42篇 |
1986年 | 46篇 |
1985年 | 45篇 |
1984年 | 38篇 |
1982年 | 26篇 |
1981年 | 26篇 |
1980年 | 23篇 |
1979年 | 32篇 |
1978年 | 22篇 |
1977年 | 30篇 |
1976年 | 21篇 |
1974年 | 28篇 |
1973年 | 39篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
11.
12.
13.
James L. Dorling Alice E. Thackray James A. King Andrea Pucci Fernanda R. Goltz Rachel L. Batterham David J. Stensel 《Nutrients》2020,12(12)
The fat mass and obesity-associated gene (FTO) rs9939609 A-allele is linked to obesity and dyslipidemia, yet the independent influence of this polymorphism on blood lipids remains equivocal. We examined the influence of the FTO rs9939609 polymorphism on fasting and postprandial blood lipids in individuals homozygous for the risk A-allele or T-allele with similar anthropometric and demographic characteristics. 12 AA and 12 TT males consumed a standardized meal after fasting overnight. Blood samples were collected at baseline (−1.5 h), before the meal (0 h), and for five hours postprandially to measure lipid, glucose, and insulin concentrations. Time-averaged total area under the curve (TAUC) values (0–5 h) were calculated and compared between genotypes. Fasting triacylglycerol (TG), high-density lipoprotein cholesterol, low-density lipoprotein cholesterol, total cholesterol, non-esterified fatty acid (NEFA), glucose, and insulin concentrations were similar between groups (p ≥ 0.293). TAUC for TG was similar in AAs and TTs (95% confidence interval (CI) −0.52 to 0.31 mmol/L/h; p = 0.606). Likewise, TAUC values were similar for NEFA (95% CI −0.04 to 0.03 mmol/L/h; p = 0.734), glucose (95% CI −0.41 to 0.44 mmol/L/h; p = 0.951), and insulin (95% CI −6.87 to 2.83 pmol/L/h; p = 0.395). Blood lipids are not influenced by the FTO rs9939609 polymorphism, suggesting the FTO-dyslipidemia link is mediated by adiposity and weight management is important in preventing FTO-related lipid variations. 相似文献
14.
James I. Geller MD Joseph G. Pressey MD Malcolm A. Smith MD Rachel A. Kudgus PhD Mariana Cajaiba MD Joel M. Reid PhD David Hall PhD Donald A. Barkauskas PhD Stephen D. Voss MD Steve Y. Cho MD Stacey L. Berg MD Jeffrey S. Dome MD PhD Elizabeth Fox MD Brenda J. Weigel MD 《Cancer》2020,126(24):5303-5310
15.
16.
Rachel A. Woolrich Myra J. Cooper Hannah M. Turner 《Cognitive therapy and research》2006,30(6):735-748
Objective: The study explored the semantic content and origins of negative self-beliefs, and their functional links to “not eating enough” and other behaviors, in participants with anorexia nervosa (AN). Method: Fifteen women meeting DSM-IV criteria for AN were compared with 17 dieting and 18 non-dieting women matched on age and number of years of education. The main outcome measure was a semi-structured interview. Results: Six themes were identified in the beliefs of participants with AN. These were, in order of decreasing frequency, powerlessness (present in all but three AN participants), failure, defectiveness, unattractiveness, worthlessness and emptiness. Importantly, powerlessness and failure beliefs were consistently present independent of Beck Depression Inventory-II scores. The negative early life experiences associated with these beliefs had high distress and responsibility ratings. Participants with AN reported that they employed specific behaviors, particularly ‘not eating enough,’ and ‘placating others,’ to try to reduce the cognitive and emotional impact of their negative self-beliefs. Discussion: The findings are discussed in relation to the role of powerlessness and the function of “not eating enough” in cognitive theory and therapy for AN.
相似文献
相似文献
17.
Rachel Yaff Zisk 《Pain Management Nursing》2003,4(1):40-51
Though human pain has existed since the dawn of time, formal medical pain relief in the form of anesthesia and analgesia has been available only since the mid-nineteenth century. Even after these measures became available, they were used very selectively for the first 100 years of their existence. The youngest patients, especially, were denied pain relief, probably because they could not complain about their pain as articulately and as effectively as adult patients could. A desperate need existed for health care professionals to recognize and appreciate the fact that their youngest patients could suffer immensely and to adequately address the issue. This article reviews the evolution of knowledge and attitudes regarding young patients' pain and addresses why and how this process occurred. The evolution of knowledge was traced by reviewing the literature found in MEDLINE, CINAHL, and LEXIS-NEXIS searches and through hand searches of articles that were frequently cited. Physiologic, pharmacologic, ethical, and psychologic aspects of young patients' pain are addressed. A unique phenomenon arose from the data reviewed. The process of belief and changes in practice were encouraged not only by advances in science, but also by consumer demand. Advances in the past decade in the management of young patients' pain were profound, but are still not complete. Understanding the evolution surrounding pain recognition in young patients provides a stepping stone that can facilitate further improvements in the management of pain in young patients. 相似文献
18.
19.
20.
Sheela R Geraghty Barbara S Davidson Barbara B Warner Amy L Sapsford Jeanne L Ballard Betsy A List Rachel Akers Ardythe L Morrow 《Journal of human lactation》2005,21(1):59-66
Although there are well-established clinical human milk banks in the United States, there are no milk banks specifically intended to foster research on human milk. The authors' goal was to establish a milk bank with a core data set to support exploratory and hypothesis-driven studies on human milk. Donations to the Cincinnati Children's Research Human Milk Bank are accepted within the context of ongoing, hypothesis-driven research or on an ad hoc basis. Donors must give informed consent, and scientists wishing to use the samples must have Institutional review board approval for their use. Development of more research human milk banks can potentially provide resources for multidisciplinary collaboration and advance the study of human milk and lactation. 相似文献