全文获取类型
收费全文 | 17140篇 |
免费 | 1314篇 |
国内免费 | 58篇 |
专业分类
耳鼻咽喉 | 217篇 |
儿科学 | 658篇 |
妇产科学 | 529篇 |
基础医学 | 2263篇 |
口腔科学 | 346篇 |
临床医学 | 1549篇 |
内科学 | 4188篇 |
皮肤病学 | 434篇 |
神经病学 | 1435篇 |
特种医学 | 370篇 |
外科学 | 2221篇 |
综合类 | 93篇 |
一般理论 | 10篇 |
预防医学 | 1730篇 |
眼科学 | 456篇 |
药学 | 1030篇 |
中国医学 | 73篇 |
肿瘤学 | 910篇 |
出版年
2023年 | 90篇 |
2022年 | 247篇 |
2021年 | 565篇 |
2020年 | 322篇 |
2019年 | 559篇 |
2018年 | 570篇 |
2017年 | 413篇 |
2016年 | 438篇 |
2015年 | 514篇 |
2014年 | 697篇 |
2013年 | 861篇 |
2012年 | 1200篇 |
2011年 | 1322篇 |
2010年 | 799篇 |
2009年 | 639篇 |
2008年 | 1060篇 |
2007年 | 1114篇 |
2006年 | 1058篇 |
2005年 | 970篇 |
2004年 | 833篇 |
2003年 | 782篇 |
2002年 | 768篇 |
2001年 | 350篇 |
2000年 | 379篇 |
1999年 | 291篇 |
1998年 | 118篇 |
1997年 | 85篇 |
1996年 | 79篇 |
1995年 | 77篇 |
1994年 | 55篇 |
1993年 | 59篇 |
1992年 | 145篇 |
1991年 | 127篇 |
1990年 | 111篇 |
1989年 | 107篇 |
1988年 | 60篇 |
1987年 | 65篇 |
1986年 | 54篇 |
1985年 | 54篇 |
1984年 | 41篇 |
1983年 | 36篇 |
1982年 | 25篇 |
1981年 | 27篇 |
1979年 | 29篇 |
1978年 | 22篇 |
1973年 | 28篇 |
1972年 | 25篇 |
1971年 | 24篇 |
1970年 | 21篇 |
1969年 | 23篇 |
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
1.
2.
Primary cutaneous anaplastic large cell lymphomas with 6p25.3 rearrangement exhibit particular histological features
下载免费PDF全文
![点击此处可从《Histopathology》网站下载免费的PDF全文](/ch/ext_images/free.gif)
3.
4.
5.
6.
7.
Águeda Prior-Español Yaiza García-Mira Sonia Mínguez Melania Martínez-Morillo Laia Gifre Lourdes Mateo 《Reumatología clinica》2019,15(6):e81-e85
ObjectiveSeptic arthritis is a medical emergency and crystal-induced arthritis is a risk factor for its development. If both occur simultaneously, crystal-induced arthritis may mask the diagnosis of infection and delay antibiotic therapy.MethodRetrospective analysis of patients with coexistence of septic and crystal-induced arthritis. We included only patients with isolation of crystals in synovial fluid analysis and positive culture of synovial fluid and/or blood culture.ResultsA total of 25 patients (17 men and 8 women) with a mean age of 67 years. The most commonly affected joint was the knee. In synovial fluid cytological studies, the most frequently identified crystals were monosodium urate. Risk factors included diabetes and chronic renal failure. The most frequently isolated germs were methicillin-sensitive S. aureus (48%), methicillin-resistant S. aureus (12%) and Mycobacterium tuberculosis (12%). In all, 36% of subjects required surgical drainage (excluding those caused by M. tuberculosis). Clinical outcome was favorable in 56%, although intercurrent complications were usual (40%). Mortality was 8%.ConclusionsCoexistence of septic and crystal-induced arthritis represents a diagnostic challenge and requires a high index of suspicion. Gout was the most prevalent crystal-induced arthritis. S. aureus was the most commonly causative pathogen, with a high rate of methicillin-resistant S. aureus infection. If treated early, the outcome is usually favorable, making synovial fluid microbiological study imperative. 相似文献
8.
Kristina W. Whitworth Brenda Berumen-Flucker George L. Delclos Sonia Fragoso Claudia Mata David Gimeno Ruiz de Porras 《Archives of environmental & occupational health》2020,75(2):70-74
AbstractThe occupational hazards and respiratory symptoms of domestic cleaners in USA are largely unknown. We conducted a cross-sectional study among 56 Hispanic female domestic cleaner on their health status and frequency of cleaning products used and tasks performed. While women used multi-use products (60.0%) and toilet bowl cleaners (51.8%) most days of the week, many (39.3%) reported not using personal protective equipment while cleaning. Itchy/watery eyes (61.8%) and itchy nose (56.4%) were the most frequently reported symptoms. A history of physician-diagnosed asthma was reported by 14.3% while 33.9% had symptoms of bronchial hyperresponsiveness (BHR). In conclusion, this vulnerable population has high prevalence of physician-diagnosis asthma and BHR symptoms and is potentially exposed to myriad occupational hazards. Further research exploring associations between products use, cleaning tasks and respiratory symptoms is warranted. 相似文献
9.
S. Nishida J. J. Gaynor N. Nakamura F. Butt H. G. Illanes J. Kadono G. W. Neff D. M. Levi J. I. Moon G. Selvaggi T. Kato P. Ruiz A. G. Tzakis J. R. Madariaga 《American journal of transplantation》2006,6(1):140-149
A retrospective study of 1058 liver transplant recipients was performed to determine: (i) the incidence, etiology, timing, clinical features and treatment of refractory ascites (RA), (ii) risk factors for RA development, (iii) predictors of RA disappearance, (iv) predictors of survival following RA and (v) the impact of RA on patient survival. Sixty-two patients (5.9%) developed RA and its disappearance occurred in 27/62 cases. Patients having hepatitis C virus (HCV) had a significantly higher hazard rate of developing RA (p < 0.00001). No other baseline characteristic was associated with RA. Cox stepwise regression analysis of the hazard rate of RA disappearance found two significant factors: HCV recurrence as the reason for developing RA implied a poorer outcome (p = 0.006), whereas an unknown reason implied a favorable outcome (p = 0.02). In addition, survival following RA was significantly poorer among patients having bacterial peritonitis or HCV recurrence. Finally, the mortality rate was significantly (nearly 8.6 times) higher in patients following RA development while it was ongoing (p < 0.00001); however, if the RA disappeared, then the additional risk of death also disappeared. This study illustrates the importance of developing an optimal treatment strategy to (i) effectively treat RA if it develops and (ii) prevent hepatitis C recurrence. 相似文献
10.
J I?igo A Arce E Rodríguez D García de Viedma E Palenque M J Ruiz Serrano L Cabello F Chaves 《The international journal of tuberculosis and lung disease》2006,10(5):550-553
SETTING: Tuberculosis (TB) cases reported from nine districts of Madrid, where the percentage of immigrant population varied from 1.9% in 1996 to 12.2% in 2003. OBJECTIVE: To describe the trends in TB incidence from 1994 to 2003. DESIGN: Observational study. RESULTS: Between 1994-1995 and 2002-2003, the TB rate decreased from 48.5 (95% CI 45.8-51.1) to 23.3 per 100000 population (95% CI 21.5-25.1) (P < 0.001). The percentage of TB cases co-infected with HIV decreased from 55.9% in 1994 to 14.3% in 2003 (P < 0.001), whereas TB cases in foreigners increased from 2.6% in 1994 to 33.7% in 2003 (P < 0.001). CONCLUSION: Although the TB rates showed a marked decrease in the study period, the increasing impact of immigration contributed to slowing down the trend. 相似文献