全文获取类型
收费全文 | 4023292篇 |
免费 | 284377篇 |
国内免费 | 9073篇 |
专业分类
耳鼻咽喉 | 55880篇 |
儿科学 | 131751篇 |
妇产科学 | 110662篇 |
基础医学 | 573851篇 |
口腔科学 | 112045篇 |
临床医学 | 370518篇 |
内科学 | 776070篇 |
皮肤病学 | 92924篇 |
神经病学 | 326004篇 |
特种医学 | 152250篇 |
外国民族医学 | 1142篇 |
外科学 | 600930篇 |
综合类 | 83752篇 |
现状与发展 | 15篇 |
一般理论 | 1617篇 |
预防医学 | 314984篇 |
眼科学 | 93725篇 |
药学 | 296379篇 |
16篇 | |
中国医学 | 7857篇 |
肿瘤学 | 214370篇 |
出版年
2019年 | 32293篇 |
2018年 | 44660篇 |
2017年 | 33857篇 |
2016年 | 38932篇 |
2015年 | 43828篇 |
2014年 | 61231篇 |
2013年 | 92771篇 |
2012年 | 124979篇 |
2011年 | 132702篇 |
2010年 | 79819篇 |
2009年 | 75897篇 |
2008年 | 124200篇 |
2007年 | 132062篇 |
2006年 | 133985篇 |
2005年 | 129308篇 |
2004年 | 124431篇 |
2003年 | 119904篇 |
2002年 | 116002篇 |
2001年 | 183196篇 |
2000年 | 188045篇 |
1999年 | 158991篇 |
1998年 | 47226篇 |
1997年 | 41503篇 |
1996年 | 41651篇 |
1995年 | 40042篇 |
1994年 | 36776篇 |
1993年 | 34598篇 |
1992年 | 124691篇 |
1991年 | 120873篇 |
1990年 | 117559篇 |
1989年 | 113944篇 |
1988年 | 104862篇 |
1987年 | 102771篇 |
1986年 | 96789篇 |
1985年 | 92747篇 |
1984年 | 69343篇 |
1983年 | 59034篇 |
1982年 | 35207篇 |
1981年 | 31707篇 |
1979年 | 62923篇 |
1978年 | 44753篇 |
1977年 | 37784篇 |
1976年 | 35574篇 |
1975年 | 37984篇 |
1974年 | 45315篇 |
1973年 | 43183篇 |
1972年 | 40639篇 |
1971年 | 38177篇 |
1970年 | 35149篇 |
1969年 | 33838篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
91.
Nevo N. Goldstein A. L. Staierman M. Eran N. Carmeli I. Rayman S. mnouskin Y. 《Hernia》2022,26(6):1491-1499
Hernia - The minimally invasive surgical repair of combined inguinal and ventral hernias often requires shifting from one approach or plane to another. The traditional enhanced-view totally... 相似文献
92.
Fathi A Elshazly Walid K Abdelbasset Ragab K Elnaggar Sayed A Tantawy 《African health sciences》2020,20(1):368
BackgroundSecond-hand smoking or environmental tobacco smoke is a critical health risk. Children are the most vulnerable to second-hand smoking because of their small bronchial ducts, less developed immunity, and low-physical activity.ObjectivesThe purpose of this study was to ascertain the effects of second-hand smoking on lung functions in athlete and non-athlete school-aged children.MethodsThis observational study included forty-six school-aged children, their age was 8–15 years, assigned to three groups; 2 study groups and 1 control group (n=15). The study groups comprised of 16 football players, and of 15 cyclists. Lung functions were evaluated recording forced vital capacity, forced expiratory volume in 1 sec and peak expiratory flow using digital spirometer.ResultsAll measures were recorded in definite values and the children were also classified into second-hand smoking (SH), or non-exposed to tobacco smoking (NE). The findings presented a significant increase (p<0.05) of the study groups in forced vital capacity, forced expiratory volume in 1 sec and peak expiratory flow solely for the non-exposed children. However, there were non-significant differences between the cyclists and football players or between the passive smoking children and non-exposed children in any of the two study groups (p>0.05).ConclusionThe outcomes of this study suggest beneficial influences of the sports activity on the lung functions, without different influences of the cyclists and football players on the lung functions. 相似文献
93.
94.
95.
96.
97.
Interstitial cystitis/bladder pain syndrome (IC/BPS) and vulvodynia are chronic pain syndromes that appear to be intertwined from the perspectives of embryology, pathology and epidemiology. These associations may account for similar responses to various therapies. 相似文献
98.
Hsiao-Hsuan Kuo Ran Fan Nina Dvorina Andres Chiesa-Vottero William M. Baldwin III 《Journal of the American Society of Nephrology : JASN》2015,26(4):855-863
Antibody-mediated rejection is a major complication in renal transplantation. The pathologic manifestations of acute antibody-mediated rejection that has progressed to functional impairment of a renal transplant have been defined in clinical biopsy specimens. However, the initial stages of the process are difficult to resolve with the unavoidable variables of clinical studies. We devised a model of renal transplantation to elucidate the initial stages of humoral rejection. Kidneys were orthotopically allografted to immunodeficient mice. After perioperative inflammation subsided, donor-specific alloantibodies were passively transferred to the recipient. Within 1 hour after a single transfer of antibodies, C4d was deposited diffusely on capillaries, and von Willebrand factor released from endothelial cells coated intravascular platelet aggregates. Platelet-transported inflammatory mediators platelet factor 4 and serotonin accumulated in the graft at 100- to 1000-fold higher concentrations compared with other platelet-transported chemokines. Activated platelets that expressed P-selectin attached to vascular endothelium and macrophages. These intragraft inflammatory changes were accompanied by evidence of acute endothelial injury. Repeated transfers of alloantibodies over 1 week sustained high levels of platelet factor 4 and serotonin. Platelet depletion decreased platelet mediators and altered the accumulation of macrophages. These data indicate that platelets augment early inflammation in response to donor-specific antibodies and that platelet-derived mediators may be markers of evolving alloantibody responses. 相似文献
99.
100.