全文获取类型
收费全文 | 13334篇 |
免费 | 624篇 |
国内免费 | 58篇 |
专业分类
耳鼻咽喉 | 121篇 |
儿科学 | 358篇 |
妇产科学 | 276篇 |
基础医学 | 1538篇 |
口腔科学 | 368篇 |
临床医学 | 1045篇 |
内科学 | 2996篇 |
皮肤病学 | 259篇 |
神经病学 | 1191篇 |
特种医学 | 318篇 |
外科学 | 1735篇 |
综合类 | 47篇 |
一般理论 | 3篇 |
预防医学 | 1602篇 |
眼科学 | 527篇 |
药学 | 1042篇 |
中国医学 | 28篇 |
肿瘤学 | 562篇 |
出版年
2023年 | 49篇 |
2022年 | 46篇 |
2021年 | 137篇 |
2020年 | 83篇 |
2019年 | 133篇 |
2018年 | 222篇 |
2017年 | 155篇 |
2016年 | 157篇 |
2015年 | 208篇 |
2014年 | 239篇 |
2013年 | 346篇 |
2012年 | 968篇 |
2011年 | 1078篇 |
2010年 | 380篇 |
2009年 | 298篇 |
2008年 | 968篇 |
2007年 | 1037篇 |
2006年 | 1034篇 |
2005年 | 1054篇 |
2004年 | 999篇 |
2003年 | 935篇 |
2002年 | 845篇 |
2001年 | 612篇 |
2000年 | 678篇 |
1999年 | 356篇 |
1998年 | 68篇 |
1997年 | 53篇 |
1996年 | 56篇 |
1995年 | 27篇 |
1994年 | 27篇 |
1993年 | 29篇 |
1992年 | 70篇 |
1991年 | 69篇 |
1990年 | 59篇 |
1989年 | 56篇 |
1988年 | 44篇 |
1987年 | 42篇 |
1986年 | 36篇 |
1985年 | 37篇 |
1984年 | 28篇 |
1983年 | 23篇 |
1982年 | 15篇 |
1979年 | 24篇 |
1977年 | 12篇 |
1976年 | 16篇 |
1975年 | 14篇 |
1974年 | 15篇 |
1973年 | 13篇 |
1971年 | 14篇 |
1968年 | 15篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
2.
Tormo Nuria Giménez Estela Martínez-Navarro María Albert Eliseo Navalpotro David Torres Ignacio Gimeno Concepción Navarro David 《European journal of clinical microbiology & infectious diseases》2022,41(4):657-662
European Journal of Clinical Microbiology & Infectious Diseases - We compared the performance of an in-house-developed flow cytometry assay for intracellular cytokine staining (FC-ICS) and a... 相似文献
3.
José A. Lorente Pablo Cardinal-Fernández Diego Muñoz Fernando Frutos-Vivar Arnaud W. Thille Carlos Jaramillo Aida Ballén-Barragán José M. Rodríguez Oscar Peñuelas Guillermo Ortiz José Blanco Bruno Valle Pinheiro Nicolás Nin María del Carmen Marin Andrés Esteban Taylor B. Thompson 《Intensive care medicine》2015,41(11):1921-1930
4.
5.
Compromise of immune function in obstructive jaundice. 总被引:5,自引:0,他引:5
6.
7.
8.
Levente Gáspár Zoltán Jónás László Kiss György Vereb Zoltán Csernátony 《European journal of orthopaedic surgery & traumatology : orthopedie traumatologie》2009,19(6):403-407
Background Coccygodynia can cause severe pain and disability in patients. There are contradictions in the literature regarding the final
results of coccygectomy for coccygodynia. We evaluated the long-term effects of coccygectomy on the intensity, characteristics,
and manifestation of pain caused by coccygodynia to determine the adequacy of operation among treatment modalities.
Materials and methods Thirty-four patients with coccygodynia were treated by coccygectomy. In 22 cases, trauma, and in one case childbirth was the
cause. 11 cases were regarded as idiopathic. The intensity, characteristics of pain, and the most painful activities were
evaluated at an average of 7.6 (3–18) years of follow-up time.
Results Before the operation, all 34 patients had pain while sitting, moreover, 26 of them had pain during standing, walking, at night
or a combination of these. 21 patients had intolerable or very intensive, mainly acute, sharp or burning pain. 11 patients
had dyschesia, 2 had dysuria and 6 had dyspareunia. At follow-up, 7 patients were completely free of pain, 15 others had moderate,
11 medium, and only one patient had severe, but none had intolerable pain. Only seven patients had acute, sharp or burning
pain postoperatively. The decrease of average pain score from 8.0 to 3.2 was significant (P < 10−12). The number of the patients with dyschesia and dyspareunia decreased from 11 to 7 and from 6 to 3, respectively. Two patients
had dysuria, but their complaints did not change after the operation. One of the two patients who needed reoperation had an
excellent final result, while the other remained unchanged. 12 and 16 patients (together 82%) regarded the final result of
the operation excellent and good, respectively. The condition of five others did not change, while one became worse. The patients
with younger age, smaller body mass index, and less co-morbidities had better final result. There were no serious complications.
Conclusion Coccygectomy for coccygodynia is a safe method to decrease the intensity of pain and other complaints of the patients. The
operation can be the choice of treatment if conservative measures fail. 相似文献
9.
Amalia Moreno Concepción Montón Yolanda Belmonte Miguel Gallego Xavier Pomares Jordi Real 《Archivos de bronconeumologia》2009,45(4):181-185
ObjectiveThe objective of this study was to assess the causes of death and risk factors for mortality in a cohort of patients with severe chronic obstructive pulmonary disease (COPD).Patients and methodsWe studied 203 patients with severe COPD (forced expiratory volume in 1 second [FEV1] <50%), who were attended in our respiratory department day hospital (2001-2006). Clinical variables were recorded on inclusion, and clinical course and causes of death were retrospectively reviewed.ResultsThe mean (SD) age of patients was 69 (8) years and the mean FEV1 was 30.8% (8.2%). One-hundred and nine patients died (53.7%); death was attributed to respiratory causes in 72 (80.9%), with COPD exacerbation being the most frequent specific cause within this category (48.3%). During follow-up, 18.7% required admission to the intensive care unit (ICU). Survival at 1, 3, and 5 years was 80%, 53%, and 26%, respectively. The multivariate analysis showed that mortality was associated with age, stage IV classification according to the Global Initiative for Chronic Obstructive Lung Disease (GOLD), cor pulmonale, and hospital admission during the year prior to inclusion. Need for admission to the ICU during follow-up was a factor independently associated with higher mortality.ConclusionsMortality in patients with severe COPD was high and exacerbation of the disease was one of the most frequent causes of death. Age, GOLD stage, cor pulmonale, prior admission to hospital, and need for admission to the ICU during follow-up were independent predictors of mortality. 相似文献
10.
C Casanova C G Cote J M Marin J P de Torres A Aguirre-Jaime R Mendez L Dordelly B R Celli 《The European respiratory journal》2007,29(3):535-540
The 6-min walking distance (6MWD) test is used in clinical practice and research into patients with chronic obstructive pulmonary disease (COPD). However, little is known about natural long-term change in this parameter. The 6MWD was measured at baseline and then annually for 5 yrs in 294 patients with COPD and its annual rate of decline was determined. Forced expiratory volume in one second (FEV1) was also measured and the relationship between changes in both markers was explored. At baseline, the median 6MWD was 380 m (range 160-600 m). It declined by 19% (16 m.yr(-1)) over the 5 yrs compared with baseline in patients with American Thoracic Society/European Respiratory Society stage III COPD (FEV1 30-50% predicted) and by 26% (15 m.yr(-1)) in patients with stage IV COPD (FEV1 <30% pred). Over the 5-yr follow-up, the proportion of patients with a minimal clinically significant decline of 54 m increased with the severity of the disease. It was 24% in stage II, 45% in stage III, and 63% in stage IV disease. In contrast, the rate of decline of FEV1 was greater in patients with milder airflow obstruction and lesser in patients with lower absolute FEV1 values. In conclusion, the 6-min walking distance test provides increasingly useful information as the severity of chronic obstructive pulmonary disease increases. 相似文献