全文获取类型
收费全文 | 3070篇 |
免费 | 169篇 |
国内免费 | 15篇 |
专业分类
耳鼻咽喉 | 39篇 |
儿科学 | 316篇 |
妇产科学 | 56篇 |
基础医学 | 326篇 |
口腔科学 | 149篇 |
临床医学 | 185篇 |
内科学 | 581篇 |
皮肤病学 | 87篇 |
神经病学 | 191篇 |
特种医学 | 142篇 |
外国民族医学 | 2篇 |
外科学 | 384篇 |
综合类 | 142篇 |
一般理论 | 1篇 |
预防医学 | 170篇 |
眼科学 | 64篇 |
药学 | 210篇 |
1篇 | |
中国医学 | 16篇 |
肿瘤学 | 192篇 |
出版年
2023年 | 14篇 |
2022年 | 39篇 |
2021年 | 81篇 |
2020年 | 44篇 |
2019年 | 60篇 |
2018年 | 105篇 |
2017年 | 75篇 |
2016年 | 86篇 |
2015年 | 86篇 |
2014年 | 124篇 |
2013年 | 164篇 |
2012年 | 205篇 |
2011年 | 190篇 |
2010年 | 141篇 |
2009年 | 122篇 |
2008年 | 145篇 |
2007年 | 157篇 |
2006年 | 155篇 |
2005年 | 108篇 |
2004年 | 143篇 |
2003年 | 85篇 |
2002年 | 73篇 |
2001年 | 48篇 |
2000年 | 60篇 |
1999年 | 51篇 |
1998年 | 39篇 |
1997年 | 38篇 |
1996年 | 41篇 |
1995年 | 40篇 |
1994年 | 28篇 |
1993年 | 22篇 |
1992年 | 42篇 |
1991年 | 36篇 |
1990年 | 40篇 |
1989年 | 53篇 |
1988年 | 27篇 |
1987年 | 30篇 |
1986年 | 36篇 |
1985年 | 25篇 |
1984年 | 22篇 |
1983年 | 23篇 |
1982年 | 12篇 |
1981年 | 15篇 |
1980年 | 17篇 |
1979年 | 15篇 |
1978年 | 13篇 |
1977年 | 13篇 |
1976年 | 11篇 |
1974年 | 12篇 |
1973年 | 8篇 |
排序方式: 共有3254条查询结果,搜索用时 0 毫秒
1.
Rajesh Bhat Alison Severn Sam Chakraverty 《Nephrology, dialysis, transplantation》2006,21(9):2642-2643
Placement of tunnelled dialysis lines is effective using ultrasoundand fluoroscopic guidance [1] and has a higher success ratethan blind insertion [2]. After the ultrasound guided access into a neck vein, wires andcatheters are guided in to a suitable position in the 相似文献
2.
A. O. Azghani J. W. Baker S. Shetty E. J. Miller G. J. Bhat 《Inflammation research》2002,51(10):506-510
OBJECTIVE AND DESIGN: Bacterial products as well as the host airway inflammatory responses contribute to the pathogenesis of Pseudomonas infections. We sought to determine if Pseudomonas elastase (PE) induces mitogen-activated protein (MAP) kinase activity in association with interleukin-8 (IL-8) production by alveolar epithelial cells. METHODS: We utilized Western blot analysis to detect phosphorylation of signaling intermediates and ELISA was used to measure IL-8 production. RESULTS: We found that PE induces phosphorylation of the extracellular signal-regulated (ERK1/2) proteins of the MAPK pathway in A549 epithelial cells. Similar results were obtained using primary cultures of rabbit alveolar type II epithelial cells. PE also enhanced IL-8 production, which was abolished in the presence of the ERK activation inhibitor U0126. CONCLUSIONS: We conclude that PE activates the ERK1/2 arm of the MAPK pathway and that activation of this pathway results in enhanced IL-8 production. The results demonstrate that PE may augment pulmonary inflammation via cellular signaling that regulates expression of IL-8. 相似文献
3.
4.
Gayatri Vasudevan R. Chandra B. Vishnu Bhat B. D. Bhatia 《Indian Journal of Thoracic and Cardiovascular Surgery》1993,9(1):42-44
We present two cases of neonatal pleural effusion, a relatively rare condition, most commonly due to chylothorax. One had
bilateral hypoplastic lungs and the other suffered birth asphyxia. Both died before any treatment could be initiated. 相似文献
5.
6.
Asymptomatic infection with Loa loa, an eye worm, is reported in a 32-year old Zambian woman. The patient revealed up to 28% eosinophilia but microfileraemia was not noticed. One gravid female parasite 56 X 0.56 mm, extracted from lower lid of left eye of the patient, is described. Treatment with diethylcarbamazine (DEC) extended over three weeks was successful against another parasite in tissues. 相似文献
7.
The first 150 words of the full text of this article appear below. Key points Coronary artery disease accounts for >30% ofdeaths in Western society. The diagnosis of myocardial infarctionshould be qualified by size, causation and time from occurrence. Mortalityis reduced by immediate or primary percutaneouscoronary intervention or thrombolysis within the first 24 hof onset of ST-segment elevation myocardial infarction. Strategiesto reduce platelet activation (glycoprotein IIb/IIIa receptorantagonists, or clopidogrel) are now recommended in the treatmentof high-risk non-ST-segment myocardial infarction/unstable angina. Elevatedserum troponins may be the result of non-ischaemic myocardialdamage, especially in critical illness.
Pathophysiology
Changes in the definition of terms relating to the diagnosisof myocardial infarction (MI) have evolved by better understandingof the pathophysiology culminating in the new term of acutecoronary syndrome (ACS). Figure 1 illustrates the processesthat occur in the development of an acute coronary event. 相似文献
8.
9.
10.