全文获取类型
收费全文 | 8932篇 |
免费 | 2467篇 |
国内免费 | 128篇 |
专业分类
耳鼻咽喉 | 370篇 |
儿科学 | 190篇 |
妇产科学 | 250篇 |
基础医学 | 157篇 |
口腔科学 | 150篇 |
临床医学 | 2884篇 |
内科学 | 1657篇 |
皮肤病学 | 307篇 |
神经病学 | 683篇 |
特种医学 | 324篇 |
外科学 | 1278篇 |
综合类 | 360篇 |
现状与发展 | 2篇 |
预防医学 | 1715篇 |
眼科学 | 100篇 |
药学 | 191篇 |
1篇 | |
中国医学 | 100篇 |
肿瘤学 | 808篇 |
出版年
2024年 | 80篇 |
2023年 | 410篇 |
2022年 | 115篇 |
2021年 | 254篇 |
2020年 | 487篇 |
2019年 | 164篇 |
2018年 | 558篇 |
2017年 | 598篇 |
2016年 | 618篇 |
2015年 | 708篇 |
2014年 | 706篇 |
2013年 | 1034篇 |
2012年 | 378篇 |
2011年 | 327篇 |
2010年 | 509篇 |
2009年 | 626篇 |
2008年 | 296篇 |
2007年 | 228篇 |
2006年 | 269篇 |
2005年 | 184篇 |
2004年 | 141篇 |
2003年 | 108篇 |
2002年 | 90篇 |
2001年 | 177篇 |
2000年 | 108篇 |
1999年 | 147篇 |
1998年 | 268篇 |
1997年 | 284篇 |
1996年 | 307篇 |
1995年 | 243篇 |
1994年 | 173篇 |
1993年 | 117篇 |
1992年 | 83篇 |
1991年 | 81篇 |
1990年 | 71篇 |
1989年 | 88篇 |
1988年 | 69篇 |
1987年 | 54篇 |
1986年 | 47篇 |
1985年 | 51篇 |
1984年 | 45篇 |
1983年 | 42篇 |
1982年 | 30篇 |
1981年 | 44篇 |
1980年 | 19篇 |
1979年 | 10篇 |
1978年 | 12篇 |
1977年 | 15篇 |
1976年 | 13篇 |
1975年 | 9篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
991.
Alyssa Izquierdo BS Franziska Plessow PhD Kendra R. Becker PhD Christopher J. Mancuso BS Meghan Slattery NP Helen B. Murray BA Andrea S. Hartmann PhD Madhusmita Misra MD MPH Elizabeth A. Lawson MD Kamryn T. Eddy PhD Jennifer J. Thomas PhD 《The International journal of eating disorders》2019,52(4):419-427
992.
993.
994.
995.
Ultrasound‐based clinical prediction rule model for detecting papillary thyroid cancer in cervical lymph nodes: A pilot study
下载免费PDF全文
![点击此处可从《Journal of clinical ultrasound : JCU》网站下载免费的PDF全文](/ch/ext_images/free.gif)
996.
997.
Enhancing the management of deteriorating patients with Australian on line e‐simulation software: Acceptability,transferability, and impact in Hong Kong
下载免费PDF全文
![点击此处可从《Nursing & health sciences》网站下载免费的PDF全文](/ch/ext_images/free.gif)
Louise Sparkes RN MN Maggie Mee Kie Chan RN BN MMSc Simon Cooper PhD MEd BA RN Michelle Tsz Ha Pang RN BN MSc 《Nursing & health sciences》2016,18(3):393-399
International concerns relating to healthcare professionals’ failure to rescue deteriorating patients exist. Web‐based training programs have been developed and evaluated in Western settings but further testing is required before application in non‐Western countries, as traditional modalities of learning may differ between cultures. We trialed an Australian English language online simulation program for the management of deteriorating patients, Feedback Incorporating Review and Simulation Techniques to Act on Clinical Trends (FIRST2ACTWeb), to test cultural acceptability, transferability, and educational impact. The study was designed as a quasi‐experimental evaluation of the FIRST2ACTWeb program with final year nursing students from a Bachelor of Nursing program at the University of Hong Kong. Participants completed pre‐course and post‐course tests, three interactive scenarios, and program evaluations. The program was positively evaluated, with significant improvements in knowledge, skills, self‐rating of performance, confidence, and competence. Outcomes were comparable to earlier evaluations with Australian students, demonstrating that an interactive simulation‐based program of patient deterioration management has cultural and language acceptability and transferability across communities with significant educational impact. 相似文献
998.
999.
John F. Tucker MD Richard A. Collins MD PhD Alfred J. Anderson MS Jacqueline Hauser BS John Kalas BA Fred S. Apple PhD 《Academic emergency medicine》1997,4(1):13-21
Objective : To compare the early diagnostic efficiency of the cardiac troponin I (cTn-I) level with that of the cardiac troponin T (cTn-T) level, as well as the creatine kinase (CK), CK-MB, and myoglobin levels, for acute myocardial infarction (AMI) in patients without an initially diagnostic ECG presenting to the ED within 24 hours of the onset of their symptoms. Methods : A prospective, observational, cohort study was performed involving chest pain patients admitted to a large urban community hospital. Participants were consecutive consenting ED chest pain patients ≥30 years of age. Exclusions included duration of symptoms >24 hours, inability to complete data collection, receipt of CPR, and ST-segment elevation on the initial ECG. Measurements included levels of cTn-I, cTn-T, CK, CK-MB, and myoglobin at the time of presentation and 1, 2, 6, and 12–24 hours after presentation as well as presenting ECG and clinical follow-up. Confirmation of the diagnosis of AMI was based on World Health Organization criteria. Results : Of the 177 patients included in the study, 27 (15%) were diagnosed as having AMIs. The sensitivities of all 5 biochemical markers for AMI were poor at the time of ED presentation (3.7–33.3%) but rose significantly over the study period. The sensitivity of cTn-T was significantly better than that of cTn-I over the initial 2 hours, but both markers' sensitivities were low (<60%) during this time frame. The cTn-I was significantly more specific for AMI than was the cTn-T, but not significantly better than CK-MB or myoglobin. Likelihood ratio analysis showed that the biochemical markers with the highest positive likelihood ratios for AMI during the first 2 hours following ED presentation were myoglobin and CK-MB. From 6 through 24 hours, the positive likelihood ratios for cTn-I, CK-MB, and myoglobin were superior to those of CK and cTn-T. Conclusions : cTn-I, CK-MB, and myoglobin are significantly more specific for AMI than are CK and cTn-T. Myoglobin is the biochemical marker having the highest combination of sensitivity, specificity, and negative predictive value for AMI within 2 hours of ED presentation. Neither cTn-I nor cTn-T offers significant advantages over myoglobin and CK-MB in the early (≤2 hours) initial screening for AMI. The cardiac troponins are of benefit in identifying AMI ≤6 hours after presentation. 相似文献
1000.
Daniel Darbyshire MBBS PGDip MRCS FHEA Daniel Rowbotham BA Sarka Grayson Julia Taylor MSc RGN David Shackley MBChB MD FRCS 《International Journal of Urological Nursing》2016,10(1):14-20
About 15–20% of hospital inpatients are catheterized, and it has been estimated that in an average sized hospital 10–15 patients will die each year from catheter‐related sepsis. Reducing catheterization rates or indwell times has been shown to reduce associated sepsis. This study examined patient experience of catheterization; the rationale for the study was to broaden understanding of catheter impact as part of a wider quality improvement agenda. Fifty patients completed a detailed catheter‐experience patient questionnaire. The patients were all inpatients from 17 wards across a range of specialties. Data were sought on demographics, catheter status, experience and their knowledge of and involvement in the catheter care. Fifty percent gender split. Median catheter time was 5 d (range 2 h to long term). Median age 72 years (range 22–92). Thirty‐four percent (n = 17) of patients did not have the process and options discussed before catheterization. Eighteen percent did not know why they were catheterized. Patients experienced leaking (32%), ‘pain’ (26%), inconvenience (26%), embarrassment (24%), blocking (24%) with 8% finding their catheters ‘restrictive’. Fourteen percent felt they could have coped without the catheter. Urinary catheters have a profound and often negative effect on the inpatient experience. This information can help support and empower colleagues to push for less urinary catheter use in the non‐urological inpatient population and start to better understand the patient experience. 相似文献