全文获取类型
收费全文 | 4421篇 |
免费 | 303篇 |
国内免费 | 6篇 |
专业分类
耳鼻咽喉 | 28篇 |
儿科学 | 221篇 |
妇产科学 | 183篇 |
基础医学 | 606篇 |
口腔科学 | 81篇 |
临床医学 | 777篇 |
内科学 | 716篇 |
皮肤病学 | 122篇 |
神经病学 | 344篇 |
特种医学 | 51篇 |
外科学 | 412篇 |
综合类 | 60篇 |
一般理论 | 3篇 |
预防医学 | 619篇 |
眼科学 | 32篇 |
药学 | 191篇 |
中国医学 | 1篇 |
肿瘤学 | 283篇 |
出版年
2023年 | 21篇 |
2022年 | 36篇 |
2021年 | 83篇 |
2020年 | 54篇 |
2019年 | 84篇 |
2018年 | 94篇 |
2017年 | 72篇 |
2016年 | 102篇 |
2015年 | 106篇 |
2014年 | 147篇 |
2013年 | 214篇 |
2012年 | 284篇 |
2011年 | 325篇 |
2010年 | 166篇 |
2009年 | 141篇 |
2008年 | 263篇 |
2007年 | 303篇 |
2006年 | 313篇 |
2005年 | 266篇 |
2004年 | 304篇 |
2003年 | 247篇 |
2002年 | 272篇 |
2001年 | 30篇 |
2000年 | 16篇 |
1999年 | 37篇 |
1998年 | 57篇 |
1997年 | 44篇 |
1996年 | 53篇 |
1995年 | 46篇 |
1994年 | 43篇 |
1993年 | 36篇 |
1992年 | 23篇 |
1991年 | 27篇 |
1990年 | 25篇 |
1989年 | 19篇 |
1988年 | 22篇 |
1986年 | 21篇 |
1985年 | 17篇 |
1984年 | 36篇 |
1983年 | 17篇 |
1982年 | 26篇 |
1981年 | 24篇 |
1980年 | 21篇 |
1979年 | 17篇 |
1978年 | 19篇 |
1977年 | 18篇 |
1976年 | 13篇 |
1974年 | 17篇 |
1971年 | 9篇 |
1968年 | 9篇 |
排序方式: 共有4730条查询结果,搜索用时 15 毫秒
71.
Nicholas J. Whitehead FRACP Stuart Murch FRACP James W. Leitch FRACP Rosemary A. Hackworthy FRACP 《Echocardiography (Mount Kisco, N.Y.)》2018,35(4):575-577
A young woman presented with fulminant heart failure. Transthoracic echocardiography revealed severe left ventricular dysfunction with a mass adjacent to the basal anterior wall, near the left ventricular outflow tract (LVOT). The cause of the acute heart failure and mass was unclear. Transesophageal echocardiography, with contrast, and cardiac magnetic resonance imaging findings were consistent with thrombus near the LVOT. Cardiac biopsy suggested giant cell myocarditis. The patient was treated with anticoagulation, steroids, and heart failure medications with resolution of the thrombus. This case was remarkable for the location of thrombus at the base of the ventricle. 相似文献
72.
73.
74.
David J. Schenk Dave Hesk Rosemary Marques Roy Helmy Patty Cheung 《Journal of labelled compounds & radiopharmaceuticals》2012,55(12):447-449
The specific activities for a series of S‐35 tracers were found to vary from the decay‐corrected specific activity of the labeled reagent. If not known before the stock solution preparation and binding assay, this variation would have resulted in performing the assay at approximately two to three times over the targeted concentration, thereby leading to considerable error in the calculated binding and related conclusions. Copyright © 2012 John Wiley & Sons, Ltd. 相似文献
75.
76.
Rosemary Ball Kevin W. Southern Pamela McCormack Alistair J.A. Duff Keith G. Brownlee Paul S. McNamara 《Journal of cystic fibrosis》2013,12(5):440-444
ObjectivesTreatment regimen for families of children with cystic fibrosis (CF) is considerable, particularly when nebulised therapies for chronic Pseudomonas aeruginosa airway infection are prescribed. Adherence to these regimens is variable, particularly in adolescence. Previously, we reported children to be more adherent in evenings compared to mornings, suggesting an association with time-pressure. The aim of this study was to determine whether adherence would be better in adolescent patients at weekends and during school holidays when time-pressures may be less.Study design24 patients (14 male, median [range] age 13.9 [11.1–16.8] years) were enrolled from two regional paediatric CF centres in the United Kingdom. Data for a full scholastic year, were downloaded openly from a breath-activated data logging nebuliser (I-neb?). Adherence (% of doses taken ÷ expected number) was calculated during term-times, holidays, weekends and weekdays, for each patient.ResultsLarge variations in adherence were seen between patients. However, adherence during term-time was significantly better than holidays (p < 0.001). Weekday adherence was better than weekend adherence in term-time but not holidays. Interestingly, patients prescribed three daily treatments took on average 1.4 treatments/day, a similar number to those prescribed two daily treatments.ConclusionOverall adherence to inhaled therapies was reasonable, but significantly reduced during holiday periods. This suggests a need for families to have not only time, but also structure in their daily routine to maintain optimal adherence to long-term therapies. It is important for CF teams to appreciate these factors when supporting families. 相似文献
77.
78.
Shinichi Imafuku Osamu Nemoto Yukari Okubo Mayumi Komine Peter Schafer Rosemary Petric Mamitaro Ohtsuki 《The Journal of dermatology》2021,48(1):80-84
We evaluated the pharmacodynamic effects of apremilast in 69 patients who were included in biomarker subanalyses of a phase 2b study that demonstrated the long‐term safety and efficacy of apremilast in Japanese adults with moderate to severe psoriasis. The association between cytokine levels and Psoriasis Area and Severity Index (PASI) improvement was evaluated using linear regression and Spearman’s rank correlation coefficient analysis. At baseline, median plasma levels of interleukin (IL)‐17A, IL‐17F and IL‐22 were elevated versus reference values for healthy individuals, whereas tumor necrosis factor‐α levels were close to normal. With apremilast 30 mg b.i.d., there were significant associations between percentage change in PASI score and percentage change in IL‐17A, IL‐17F and IL‐22 levels at week 16. Findings demonstrate that the efficacy of apremilast in psoriasis is associated with inhibition of key cytokines involved in the pathology of psoriasis. 相似文献
79.
This paper describes and compares the oral health status among people with and without diabetes in France, and analyzes the related socioeconomic factors. The study is based on data from the cross‐sectional national health survey conducted in France from 2002 to 2003, which included 19,231 people over 35 years of age, among whom 1,111 reported having diabetes. Data were collected through interviews that inquired about oral health status and use of dental care services, income, educational level, health insurance, place of residence, and birthplace. The prevalence of oral health problems was higher among subjects who had diabetes, compared with those who were nondiabetic (16.4% vs. 13.4%). Dental care utilization during the survey period was reported to be 8.7% among subjects who were diabetic versus 12.9% among those who were nondiabetic. The subjects with diabetes were more likely to have dental problems (OR = 1.47, CI = 1.03–2.08) and wear removable dentures (partial and complete) when their income was lower (OR = 2.17, CI = 1.52–3.10). There were social inequalities in oral health among people with diabetes in France according to income level. 相似文献
80.
Rosemary L. Hoffmann Sara Jo Klein Margaret Q. Rosenzweig 《Journal of cancer education》2017,32(3):522-527
Nurse practitioners are entering specialized areas of practice immediately after graduation from nurse practitioner (NP) education and certification and are finding employment in specialized areas such as oncology. Rapidly achieving a knowledge base in this highly specialized area of medicine coupled with the stress of the new nurse practitioner role can lead to a very difficult orientation and transition period. There are several methods to provide specialized education to NPs during their orientation period. Unfortunately, limitations such as a lack of motivated mentors, limited opportunities to practice the desired skill set or a lack of structure in regards to curriculum quality, and the learning needs of the new nurse hinder the NP’s transition to practice. In response to either inadequate or non-standardized orientation to the specialty role of the oncology NP (ONP), a web-enhanced educational tool, funded through the National Cancer Institute, was developed for use in the USA: Oncology Nurse Practitioner Web Education Resource (ONc-PoWER). The development of ONc-PoWER was based upon essential education for NPs new to cancer care, adult learning theory, Bloom’s Taxonomy, and foundations of quality online education. The five interactive web-based modules provide specialized education for the nurse practitioner new to oncology along with an on-site mentor to assist the NP in applying the course content to clinical practice. 相似文献