全文获取类型
收费全文 | 57916篇 |
免费 | 4711篇 |
国内免费 | 1708篇 |
专业分类
耳鼻咽喉 | 531篇 |
儿科学 | 1301篇 |
妇产科学 | 1198篇 |
基础医学 | 6310篇 |
口腔科学 | 1179篇 |
临床医学 | 6460篇 |
内科学 | 11567篇 |
皮肤病学 | 1091篇 |
神经病学 | 3467篇 |
特种医学 | 1309篇 |
外国民族医学 | 6篇 |
外科学 | 6611篇 |
综合类 | 6246篇 |
现状与发展 | 2篇 |
一般理论 | 9篇 |
预防医学 | 4992篇 |
眼科学 | 1330篇 |
药学 | 5126篇 |
53篇 | |
中国医学 | 2297篇 |
肿瘤学 | 3250篇 |
出版年
2024年 | 167篇 |
2023年 | 717篇 |
2022年 | 1704篇 |
2021年 | 2723篇 |
2020年 | 1926篇 |
2019年 | 1843篇 |
2018年 | 2014篇 |
2017年 | 1788篇 |
2016年 | 1531篇 |
2015年 | 2233篇 |
2014年 | 2949篇 |
2013年 | 3453篇 |
2012年 | 5090篇 |
2011年 | 5158篇 |
2010年 | 3465篇 |
2009年 | 3014篇 |
2008年 | 3713篇 |
2007年 | 3646篇 |
2006年 | 3163篇 |
2005年 | 2892篇 |
2004年 | 2277篇 |
2003年 | 2140篇 |
2002年 | 1760篇 |
2001年 | 539篇 |
2000年 | 455篇 |
1999年 | 405篇 |
1998年 | 322篇 |
1997年 | 274篇 |
1996年 | 250篇 |
1995年 | 207篇 |
1994年 | 162篇 |
1993年 | 135篇 |
1992年 | 174篇 |
1991年 | 168篇 |
1990年 | 152篇 |
1989年 | 139篇 |
1988年 | 114篇 |
1987年 | 109篇 |
1986年 | 121篇 |
1985年 | 115篇 |
1984年 | 88篇 |
1983年 | 83篇 |
1982年 | 84篇 |
1981年 | 91篇 |
1980年 | 65篇 |
1979年 | 81篇 |
1978年 | 51篇 |
1977年 | 55篇 |
1976年 | 56篇 |
1973年 | 58篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
María Cabrerizo Gloria Trallero María José Pena Amaia Cilla Gregoria Megias Carmen Mu?oz-Almagro Eva Del Amo Diana Roda Ana Isabel Mensalvas Antonio Moreno-Docón Juan García-Costa Nuria Rabella Manuel Ome?aca María Pilar Romero Sara Sanbonmatsu-Gámez Mercedes Pérez-Ruiz María José Santos-Mu?oz Cristina Calvo And the study group of “Enterovirus parechovirus infections in children under ?years-old Spain” PI- 《European journal of pediatrics》2015,174(11):1511-1516
2.
R G Jones J W Bass M E Weisse J M Vincent 《The Pediatric infectious disease journal》1991,10(8):557-559
We tested the urine of 30 infants 6 weeks to 7 months of age after they received standard 10-micrograms (0.5-ml) doses of HbOC (HibTITER) Haemophilus influenzae b (Hib) conjugate vaccine for the presence of Hib antigenuria using a commercially available latex particle agglutination assay (Directigen). Urines were collected within 1 hour, from 1 to 3 hours, at 24 hours and at 3, 6 and 9 days after vaccine administration and reactions were quantitated from 0 to 3+. In contrast to previous studies in older children which showed little or no antigenuria following HbOC vaccination, our study shows that in infants intense Hib antigenuria is evident within 2 to 3 hours and persists 3 days after vaccine administration and that less intense antigenuria may be detected in some infants for several days. With efficacious vaccines now being used in 2- to 6-month-old infants, invasive Hib disease may soon be limited to infants of this age just before their seroconversion. It should be recognized that antigenuria occurs for several days after vaccination with Hib conjugate vaccines and that it could be erroneously interpreted as evidence of invasive Hib infection. 相似文献
3.
R. San Juan M. Yebra C. Lumbreras F. López-Medrano M. Lizasoain J.C. Meneu J. Delgado A. Andrés J.M. Aguado 《Clinical transplantation》2009,23(5):666-671
Abstract: Long-term prophylaxis against cytomegalovirus (CMV) started immediately after transplantation in (D+/R−) poses a higher risk of late-onset CMV disease. Delayed CMV prophylaxis could allow a transitory exposure of the immune system to CMV, which would let the immune system mount an adequate CMV-specific cytotoxic response in (D+/R−) patients and confer protection against CMV disease. We included all (D+/R−) solid organ transplant recipients (SOT) performed at our institution (January 3/October 6) who received CMV prophylaxis (mainly with oral valganciclovir) during 100 d. In the first period (until December 4), prophylaxis was initiated immediately after transplantation (conventional prophylaxis: CP). Since January 5, it was initiated after 14 d (delayed prophylaxis: DP). Incidence and severity of CMV disease was compared between both groups. A total of 44 SOT recipients were included (CP: 26 and DP: 18). CMV disease was diagnosed in eight patients (18%), seven of 26 (27%) in the CP group, and one of 18 (5.5%) in the DP group (p = 0.07). CMV colitis was reported in five of 26 patients in the CP group (19%), whereas there were no cases of visceral CMV disease in the DP group (p = 0.048). A 14-d delay in the beginning of long-term prophylaxis against CMV in (D+/R−) is safe and could prevent the onset of late-CMV disease. 相似文献
4.
100例性病患者心理健康状况调查分析 总被引:3,自引:1,他引:2
目的:探讨性病患者的心理健康状况,为临床治疗和护理提供依据。方法:采用症状自评量表(SCL-90)对100例性病患者的心理健康状况进行测验。结果:100例性病患者SCL-90检测的阳性率为51%,阳性样本因子分居前的是敌对、强迫症状、抑郁、人际敏感。结论:性病患者广泛存在的心理问题,在药用治疗的同时应注意心理方面的治疗和疏导。 相似文献
5.
膀胱肿瘤2350例临床病理学特点分析 总被引:1,自引:0,他引:1
目的 探讨膀胱肿瘤的发病现状、总体趋势和病理特点.方法 整理1980-2007年2350例膀胱肿瘤病理档案,分为1980-1989、1990-1999和2000-2007年3个时间段.应用SPSS 13.0软件分析3时间段患者性别、年龄及肿瘤组织学类型间的关系.结果 2350例膀胱肿瘤中男1854例,女496例.良性92例,恶性2258例,膀胱恶性肿瘤的发病人数逐年上升.发病高峰年龄从50~69岁推迟到60~79岁.1980-1989、1990-1999和2000-2007年3个时间段中男、女恶性肿瘤病例数分别为524例和113例(4.64:11 00)、589例和164例(3.59:1.00)、675例和193例(3.50:1.00),男性约为女性的3.80倍;3时间段男性发生膀胱尿路上皮癌年龄分别为(57.5±11.7)、(62.6±12.3)、(65.9±11.3)岁,女性分别为(58.7±13.6)、(60.7±12.1)、(65.8±12.0)岁,男女各年龄段分别比较差异有统计学意义(P<0.05).男性发生鳞状细胞癌、尿路上皮癌和腺癌年龄分别为(68.05±9.7)、(59.85±14.1)、(63.4±9.9)岁,差异有统计学意义(P相似文献
6.
Edbert B Hsu Tamara L Thomas Eric B Bass Dianne Whyne Gabor D Kelen Gary B Green 《BMC medical education》2006,6(1):19-9
Background
Although training and education have long been accepted as integral to disaster preparedness, many currently taught practices are neither evidence-based nor standardized. The need for effective evidence-based disaster training of healthcare staff at all levels, including the development of standards and guidelines for training in the multi-disciplinary health response to major events, has been designated by the disaster response community as a high priority. We describe the application of systematic evidence-based consensus building methods to derive educational competencies and objectives in criteria-based preparedness and response relevant to all hospital healthcare workers. 相似文献7.
8.
9.
10.