全文获取类型
收费全文 | 2032845篇 |
免费 | 143793篇 |
国内免费 | 3935篇 |
专业分类
耳鼻咽喉 | 30080篇 |
儿科学 | 59510篇 |
妇产科学 | 56325篇 |
基础医学 | 287941篇 |
口腔科学 | 61979篇 |
临床医学 | 176088篇 |
内科学 | 393484篇 |
皮肤病学 | 44890篇 |
神经病学 | 160681篇 |
特种医学 | 80353篇 |
外国民族医学 | 501篇 |
外科学 | 318517篇 |
综合类 | 45159篇 |
现状与发展 | 7篇 |
一般理论 | 641篇 |
预防医学 | 142075篇 |
眼科学 | 48592篇 |
药学 | 154875篇 |
7篇 | |
中国医学 | 4518篇 |
肿瘤学 | 114350篇 |
出版年
2018年 | 18724篇 |
2016年 | 16622篇 |
2015年 | 18714篇 |
2014年 | 25892篇 |
2013年 | 39019篇 |
2012年 | 51945篇 |
2011年 | 54806篇 |
2010年 | 32512篇 |
2009年 | 31403篇 |
2008年 | 52889篇 |
2007年 | 56675篇 |
2006年 | 57639篇 |
2005年 | 55743篇 |
2004年 | 54183篇 |
2003年 | 52221篇 |
2002年 | 51424篇 |
2001年 | 100650篇 |
2000年 | 103624篇 |
1999年 | 87414篇 |
1998年 | 22646篇 |
1997年 | 20455篇 |
1996年 | 19992篇 |
1995年 | 18873篇 |
1994年 | 17559篇 |
1993年 | 16297篇 |
1992年 | 67627篇 |
1991年 | 65408篇 |
1990年 | 64051篇 |
1989年 | 62323篇 |
1988年 | 57748篇 |
1987年 | 56642篇 |
1986年 | 53720篇 |
1985年 | 51397篇 |
1984年 | 37903篇 |
1983年 | 32385篇 |
1982年 | 18578篇 |
1981年 | 16809篇 |
1979年 | 35941篇 |
1978年 | 25293篇 |
1977年 | 21991篇 |
1976年 | 19669篇 |
1975年 | 22161篇 |
1974年 | 26436篇 |
1973年 | 25542篇 |
1972年 | 24290篇 |
1971年 | 22772篇 |
1970年 | 21678篇 |
1969年 | 20631篇 |
1968年 | 19225篇 |
1967年 | 17279篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
991.
G K Zherlov S V Kozlov N S Rudaia T G Zherlova 《Experimental & clinical gastroenterology》2006,(3):44-50, 71
The article presents an original method of laparoscopic anti-reflux surgery, immediate and long-term results of the treatment of 132 patients with esophageal opening hernia. It also describes the analysis of the life quality of patients with the gastroesophageal reflux disease before and after the surgery. 相似文献
992.
993.
994.
995.
996.
M Wong K Yasufuku T Nakajima F J F Herth Y Sekine K Shibuya T Iizasa K Hiroshima W K Lam T Fujisawa 《The European respiratory journal》2007,29(6):1182-1186
A diagnosis of sarcoidosis should be substantiated by pathological means in order to thoroughly exclude other diseases. The role of real-time endobronchial ultrasound-guided transbronchial needle aspiration (EBUS-TBNA) in the diagnosis of sarcoidosis has not been reported. The purpose of the present study is to evaluate the diagnostic yield of EBUS-TBNA in demonstrating the pathological features of sarcoidosis. In total, 65 patients with suspected sarcoidosis, with enlarged hilar or mediastinal lymph nodes on computed tomography, were included in the study. Patients with a suspected or known malignancy or previously established diagnosis of sarcoidosis were excluded. Convex probe endobronchial ultrasonography integrated with a separate working channel was used for EBUS-TBNA. Surgical methods were performed in those in whom no granulomas were detected by EBUS-TBNA. Patients were followed up clinically. EBUS-TBNA was performed on a total of 77 lymph node stations in 65 patients. A final diagnosis of sarcoidosis was made for 61 (93.8%) of the patients. The remaining four patients were diagnosed as having Wegener's granulomatosis (n=1) or indefinite (n=3). In patients with a final diagnosis of sarcoidosis, EBUS-TBNA demonstrated noncaseating epithelioid cell granulomas in 56 (91.8%) of the patients. No complications were reported. Endobronchial ultrasound-guided transbronchial needle aspiration proved to be a safe procedure with a high yield for the diagnoses of sarcoidosis. 相似文献
997.
998.
M Nakanishi Y Demura S Mizuno S Ameshima Y Chiba I Miyamori H Itoh M Kitaichi T Ishizaki 《The European respiratory journal》2007,29(3):453-461
High-resolution computed tomography (HRCT) findings in patients with respiratory bronchiolitis-associated interstitial lung disease (RB-ILD) are varied and nonspecific. There is no known report of changes in HRCT findings and respiratory function test results for RB-ILD patients following the cessation of smoking. Five patients with RB-ILD, confirmed by surgical lung biopsy, were retrospectively studied. Each stopped cigarette smoking and did not receive corticosteroid therapy after diagnosis. The clinical symptoms, respiratory function test results and HRCT findings obtained at the final observation were compared with those from the time of diagnosis. Ground-glass opacity and centrilobular nodules corresponding to pathological respiratory bronchiolitis, as well as intralobular fine linear-reticular opacity corresponding to fibrosis involving the subpleural alveolar septa, showed computed tomography-pathological correlations. Both clinical symptoms and the diffusing capacity of the lungs for carbon monoxide improved significantly following smoking cessation, as did ground-glass opacity and centrilobular nodules seen during the initial HRCT examination. Centrilobular nodules and ground-glass opacity, which are the main features of high-resolution computed tomography of respiratory bronchiolitis-associated interstitial lung disease patients and represent pathological respiratory bronchiolitis, can be improved by smoking cessation. The diffusing capacity of the lung for carbon monoxide in respiratory function tests can be also improved. 相似文献
999.
1000.
C Martín-García J Carnés R Blanco J C Martínez-Alonso A Callejo-Melgosa A Frades T Colino 《Journal of investigational allergology & clinical immunology》2007,17(4):271-273
Many types of seafood require cooking before ingestion and it has been demonstrated that this cooking process may affect the antigenicity and allergenicity of the food. We describe a case of anaphylaxis caused by selective sensitization to razor shell, a mollusc. In vivo and in vitro studies confirmed sensitization to boiled razor shell. Analysis of the nature of the allergen yielded results that were consistent with the findings of other authors and suggested that allergens involved in seafood allergy are commonly high molecular weight proteins that, in most cases, are heat stable. 相似文献