全文获取类型
收费全文 | 8786篇 |
免费 | 779篇 |
国内免费 | 11篇 |
专业分类
耳鼻咽喉 | 217篇 |
儿科学 | 535篇 |
妇产科学 | 398篇 |
基础医学 | 718篇 |
口腔科学 | 669篇 |
临床医学 | 811篇 |
内科学 | 1779篇 |
皮肤病学 | 178篇 |
神经病学 | 598篇 |
特种医学 | 331篇 |
外科学 | 2038篇 |
综合类 | 56篇 |
一般理论 | 1篇 |
预防医学 | 288篇 |
眼科学 | 194篇 |
药学 | 444篇 |
中国医学 | 14篇 |
肿瘤学 | 307篇 |
出版年
2023年 | 148篇 |
2022年 | 94篇 |
2021年 | 270篇 |
2020年 | 198篇 |
2019年 | 242篇 |
2018年 | 472篇 |
2017年 | 363篇 |
2016年 | 485篇 |
2015年 | 475篇 |
2014年 | 504篇 |
2013年 | 905篇 |
2012年 | 503篇 |
2011年 | 521篇 |
2010年 | 520篇 |
2009年 | 298篇 |
2008年 | 334篇 |
2007年 | 271篇 |
2006年 | 374篇 |
2005年 | 336篇 |
2004年 | 234篇 |
2003年 | 209篇 |
2002年 | 195篇 |
2001年 | 145篇 |
2000年 | 118篇 |
1999年 | 135篇 |
1998年 | 146篇 |
1997年 | 109篇 |
1996年 | 134篇 |
1995年 | 81篇 |
1994年 | 99篇 |
1993年 | 84篇 |
1992年 | 58篇 |
1991年 | 57篇 |
1990年 | 44篇 |
1989年 | 27篇 |
1988年 | 34篇 |
1987年 | 15篇 |
1986年 | 24篇 |
1985年 | 22篇 |
1984年 | 26篇 |
1983年 | 21篇 |
1982年 | 25篇 |
1981年 | 25篇 |
1980年 | 22篇 |
1979年 | 17篇 |
1978年 | 8篇 |
1977年 | 9篇 |
1976年 | 11篇 |
1974年 | 8篇 |
1973年 | 8篇 |
排序方式: 共有9576条查询结果,搜索用时 15 毫秒
1.
2.
3.
Increased arterial stiffness in young normotensive patients with Turner syndrome: associations with vascular biomarkers 下载免费PDF全文
4.
5.
Oral Saygun Serdar Topaloglu Fatih M Avsar Hakan Ozel Sema Hucumenoglu Mustafa Sahin Suleyman Hengirmen 《Canadian journal of surgery》2006,49(2):107-112
BACKGROUND: Most duodenal injuries are managed with primary repair, but the degree of duodenal-wall injury may threaten the integrity of the primary repair. Therefore, we evaluated whether the primary repair site could be reinforced with histoacryl glue (HAG) or HAG with an expanded polytetrafluoroethylene (ePTFE) mesh. METHODS: Grade 3 duodenal injury in the second portion of the rat duodenum was chosen as a standard trauma model. Thirty-three male rats were divided into sham (n = 3), 2-layer primary repair (n = 10), 1-layer primary repair plus HAG application (n = 10) and ePTFE attached with HAG over the 1-layer primary repair site (n = 10) groups. Ten-day survival, adhesion grades and histological assessment were taken as outcome measures. RESULTS: A significant survival advantage was identified in the group that had an ePTFE graft attached with HAG over a 1-layer repair when compared with the group that had a 2-layer primary repair. Adhesion grades were found to be particularly increased in the group that had an ePTFE graft attached with HAG over the primary repair site, moderately increased in the primary repair plus HAG application group and lower in the 2-layer primary repair group. ePTFE graft application was found to be beneficial to coverage of the HAG-dependent empty spaces in the serosal layer. CONCLUSIONS: A primary repair site after duodenal trauma or a difficult duodenal stump can be reinforced with the application of HAG or ePTFE graft implantation with HAG. 相似文献
6.
Summary Split or full thickness eyelid defects resulting from tumor destruction or surgical excision present a dilemma for plastic and reconstructive surgeons. Full thickness eyelid replacement requires composite grafting of the skin, together with tarsal support of its substitute and mucosa. The flap described by Fricke in 1829 was used for reconstruction of anterior lamella in six lower eyelid defects. In three of our cases chondromucosal grafts taken from nasal septum were utilized for posterior lamella repair. The results have been satisfactory from a functional and cosmetic standpoint. 相似文献
7.
Å. Öst P. Lindström B. Christensson H. Gyllenhammar L. Engstedt 《European journal of haematology》1984,33(2):160-170
A consecutive series of patients (1978–1981) comprising all patients with acute leukaemia from a population of 475000 inhabitants was reviewed. Thus, 94 patients were diagnosed as having acute leukaemia. No patients were lost from follow-up. The incidence figures of ALL and AML differed significantly from those of Sweden as a whole. 9 patients were < 15 years old. The median age of adult patients was 64 years, 60.8% being ≥ 60 years old. Of adult patients with AML, 20% had a preleukaemic history (chronic myeloproliferative disorders, myelodysplastic syndromes and others). None of 6 patients with leukaemia as a metamorphosis of a chronic myeloproliferative disorder achieved a complete remission. The overall remission rate of the remaining adult patients was 25%. Treated patients, 15–39 years old, with AML without any preleukaemic history, had a complete remission rate of 80% compared to 12% for patients ≥ 60 years old with the same diagnosis. Of 60 patients with ‘primary’ AML, 14 were not treated, mainly because of advanced age and complicating diseases. Most of these patients died within a week of admission. 相似文献
8.
Vedat Davutoglu Serdar Soydinc Abdullah Aydin Metin Karakok 《Journal of the American Society of Echocardiography》2005,18(2):185-187
The exposure to Aspergillus organisms/spores is likely common, but disease caused by tissue invasion with these fungi is uncommon and occurs primarily in the setting of immunosuppression. We report a case of rapidly advancing invasive endomyocardial aspergillosis secondary to prolonged usage of multiple broad-spectrum antibiotics in a nonimmunocompromised host. A 36-year-old cotton textile worker presented to our institution with a 3-month history of weight loss and fatigue. He reported receiving prolonged use of multiple broad-spectrum antibiotic treatment. The echocardiogram demonstrated multiple endomyocardial vegetations and a mass in the left atrium. Myocardial biopsy specimen revealed an invasive endomyocardial aspergillosis. The patient was investigated for immune deficiency including HIV, and this workup was negative. Treatment was started with amphotericin B and heparin for presumed left atrial thrombus. The patient died because of a rupture of mycotic aneurysm that resulted in cerebral hemorrhage. This case illustrates the risk of an invasive fungal infection in a nonimmunocompromised host who is a prolonged user of antibiotics in the setting of environmental exposure of opportunistic invasive fungal infections. 相似文献
9.
Abstract – This report describes an esthetic, conservative, and economical alternative restoration technique for a fractured central incisor using the patient’s own tooth crown piece and a bondable reinforcement glass fiber. Although the long‐term durability of this adhesive post core restoration remains unknown, it remains successful after 1 year. 相似文献
10.
Abstract – Traumatic dental injuries often occur to the teeth and their supporting tissues and they are the main reasons for emergency visit to a dental clinic. Management of a fracture depends on its position and the extent of root involvement. Horizontal root fractures are not seen frequently and the treatment consists of reduction and long‐term rigid fixation of the coronal segment. The present case demonstrates the successful management of two horizontally fractured maxillary central incisors with a follow‐up period of 9 months. 相似文献