全文获取类型
收费全文 | 12270篇 |
免费 | 981篇 |
国内免费 | 59篇 |
专业分类
耳鼻咽喉 | 73篇 |
儿科学 | 287篇 |
妇产科学 | 203篇 |
基础医学 | 1550篇 |
口腔科学 | 221篇 |
临床医学 | 1622篇 |
内科学 | 2359篇 |
皮肤病学 | 160篇 |
神经病学 | 1261篇 |
特种医学 | 424篇 |
外国民族医学 | 1篇 |
外科学 | 2008篇 |
综合类 | 198篇 |
现状与发展 | 1篇 |
一般理论 | 9篇 |
预防医学 | 1028篇 |
眼科学 | 225篇 |
药学 | 922篇 |
中国医学 | 47篇 |
肿瘤学 | 711篇 |
出版年
2023年 | 58篇 |
2022年 | 108篇 |
2021年 | 223篇 |
2020年 | 132篇 |
2019年 | 204篇 |
2018年 | 272篇 |
2017年 | 193篇 |
2016年 | 203篇 |
2015年 | 220篇 |
2014年 | 381篇 |
2013年 | 468篇 |
2012年 | 741篇 |
2011年 | 900篇 |
2010年 | 416篇 |
2009年 | 418篇 |
2008年 | 666篇 |
2007年 | 791篇 |
2006年 | 645篇 |
2005年 | 737篇 |
2004年 | 617篇 |
2003年 | 602篇 |
2002年 | 596篇 |
2001年 | 234篇 |
2000年 | 263篇 |
1999年 | 253篇 |
1998年 | 160篇 |
1997年 | 128篇 |
1996年 | 128篇 |
1995年 | 106篇 |
1994年 | 94篇 |
1993年 | 100篇 |
1992年 | 157篇 |
1991年 | 131篇 |
1990年 | 137篇 |
1989年 | 128篇 |
1988年 | 125篇 |
1987年 | 128篇 |
1986年 | 105篇 |
1985年 | 143篇 |
1984年 | 117篇 |
1983年 | 88篇 |
1982年 | 77篇 |
1981年 | 84篇 |
1980年 | 70篇 |
1979年 | 80篇 |
1978年 | 66篇 |
1977年 | 66篇 |
1976年 | 57篇 |
1974年 | 47篇 |
1972年 | 47篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
2.
Michael W. Manning Yi-Ju Li Dean Linder John C. Haney Yi-Hung Wu Mihai V. Podgoreanu Madhav Swaminathan Jacob N. Schroder Carmelo A. Milano Ian J. Welsby Mark Stafford-Smith Kamrouz Ghadimi 《Journal of cardiothoracic and vascular anesthesia》2021,35(5):1310-1318
- Download : Download high-res image (215KB)
- Download : Download full-size image
3.
Marleah Dean 《Health communication》2016,31(6):752-761
On May 14, 2013, Angelina Jolie disclosed she carries BRCA1, which means she has an 87% risk of developing breast cancer during her lifetime. Jolie decided to undergo a preventative bilateral mastectomy (PBM), reducing her risk to 5%. The purpose of this study was to analyze the type of information individuals are exposed to when using the Internet to search health information regarding Jolie’s decision. Qualitative content analysis revealed four main themes—information about genetics, information about a PBM, information about health care, and information about Jolie’s gender identity. Broadly, the identified websites mention Jolie’s high risk for developing cancer due to the genetic mutation BRCA1, describe a PBM occasionally noting reasons why she had this surgery and providing alternatives to the surgery, discuss issues related to health care services, costs, and insurances about Jolie’s health decision, and portray Jolie as a sexual icon, a partner to Brad Pitt, a mother of six children, and an inspirational humanitarian. The websites also depict Jolie’s health decision in positive, negative, and/or both ways. Discussion centers on how this actress’ health decision impacts the public. 相似文献
4.
OBJECTIVE: This study employed EEG source localisation procedures to study the contribution of motor preparatory and attentional processing to foreperiod activity in an S1-S2 motor priming task. METHODS: Behavioural and high-density event-related potential (ERP) data were recorded in an S1-S2 priming task where participants responded to S2 with a left or right-hand button press. S1 either provided information about response hand (informative) or ambiguous information (uninformative). RESULTS: Responses were significantly faster in informative trials compared with uninformative trials. Dipole source analysis of foreperiod lateralized ERPs revealed sources of motor preparatory activity in the dorsolateral premotor cortex (PMd) in line with previous work. In addition, two spatial attention components (ADAN, LDAP) were identified with generators in the PMd and occipitotemporal visual areas in the middle temporal (MT) region, respectively. Separation of motor-related and attentional PMd source locations was reliable along the rostral-caudal axis. CONCLUSIONS: The presence of attentional components in a motor priming paradigm supports the premotor theory of attention which suggests a close link between attention and motor preparatory processes. Separation of components in the premotor cortex is in accord with a functional division of PMd into rostral (higher-order processing) and caudal (motor-related processing) areas as suggested by imaging work. SIGNIFICANCE: A prime for response preparation is a trigger for separate, but closely linked, attention-related activity in premotor areas. 相似文献
5.
6.
A retrospective review was conducted of 1,230 human poison exposures in which syrup of ipecac was administered to determine the availability of this emetic. Ipecac was available in 41.1% of the homes, while 42.5% obtained it from the pharmacy. Eight and two tenths percent were referred to a health care facility, 2.9% obtained ipecac from a neighbor, 2.3% went to an emergency room prior to calling the poison center, and 3% obtained ipecac from other sources. A randomly selected sample of 150 of these 1,230 cases were contacted 6 months after their initial call to the poison center to determine any changes in the availability of syrup of ipecac in the home. Although almost 30% more homes had syrup of ipecac than previously, 22.2% of homes still did not have ipecac available, despite the previous poisoning experience. Greater effort should be made during follow-up to educate the public regarding ipecac and its use. 相似文献
7.
8.
Andy Stergachis Catherine M Wetmore Michelle Pennylegion Randal D Beaton Bryant T Karras Dean Webb Diane Young Michael Loehr 《American journal of health-system pharmacy》2007,64(3):285-293
PURPOSE: The effectiveness of a point of dispensing (POD) used in a mass dispensing exercise was evaluated. METHODS: Public Health-Seattle & King County (PHSKC), in conjunction with the University of Washington, conducted a functional exercise of mass dispensing plans to test the effectiveness of a POD. Specifically, the organization and maintenance of patient flow, staffing model, signage, and dissemination of public information were evaluated. A data collection application using cellular telephones was used to record time and patient flow data to evaluate patient flow. Questionnaires distributed to staff and volunteer patients at the end of the exercise obtained feedback regarding the setup, organization, and operations of the POD. RESULTS: The POD was operational for approximately 68 minutes. The majority of POD staff reported feeling comfortable with their specific job tasks and duties within 15 minutes of opening the doors to the POD to the public. Staff questionnaires also revealed a high level of self-reported confidence in their ability and in the ability of their colleagues to perform the job-specific responsibilities required of them or respond to this hypothetical event. The majority of volunteer patients found the signs helpful and easy to follow and the check-in form easy to complete. Despite efforts to provide patients with oral and written information about the medications being dispensed, only 80% indicated that they knew how to take the medication, and only 73% reported understanding the medication instructions for all the individuals for whom they picked up medication. CONCLUSION: The majority of volunteer patients and staff who participated in a functional exercise of mass dispensing plans found the POD to be effective. Time-flow analysis provided preliminary estimates of the total amount of time needed to complete the dispensing process for each head of household. 相似文献
9.
10.
Dean McMillan Richard P. Hastings Jon Coldwell 《Journal of Applied Research in Intellectual Disabilities》2004,17(4):255-265
Background There is a high rate of physical violence in populations with intellectual disabilities, and this has been linked to problems for the victim, the assailant, members of staff and services. Despite the clinical significance of this behaviour, few studies have assessed methods of predicting its occurrence. The present study examined clinical and actuarial methods of predicting violence in a forensic intellectual disability hospital. Methods The sample for the study consisted of people resident in the hospital during a 1‐year period (n = 124). Clinical prediction used a risk rating made by members of the person's clinical team, whereas actuarial prediction used the number of violent incidents in the 6‐months before the date of the clinical risk assessment. Computerized hospital records of violence in the 6 months after the assessment were used to examine the predictive accuracy of the two methods. Results The clinical method produced an area under the curve of 0.74 (95% CI: 0.65–0.83) in a receiver–operating characteristic curve analysis. The value for the actuarial method was 0.77 (95% CI: 0.69–0.86). Both methods performed at levels significantly above chance, but no one method was found to be superior to the other. Conclusions These findings suggest that it is possible to predict who is at risk of violence in forensic populations with intellectual disabilities. Here, the authors discuss the clinical implications of these findings and the clinical application of risk prediction within clinical services. 相似文献