全文获取类型
收费全文 | 5379篇 |
免费 | 488篇 |
国内免费 | 104篇 |
专业分类
耳鼻咽喉 | 66篇 |
儿科学 | 198篇 |
妇产科学 | 92篇 |
基础医学 | 592篇 |
口腔科学 | 90篇 |
临床医学 | 639篇 |
内科学 | 939篇 |
皮肤病学 | 38篇 |
神经病学 | 472篇 |
特种医学 | 294篇 |
外科学 | 806篇 |
综合类 | 137篇 |
一般理论 | 6篇 |
预防医学 | 759篇 |
眼科学 | 111篇 |
药学 | 388篇 |
中国医学 | 9篇 |
肿瘤学 | 335篇 |
出版年
2022年 | 35篇 |
2021年 | 84篇 |
2020年 | 48篇 |
2019年 | 77篇 |
2018年 | 88篇 |
2017年 | 81篇 |
2016年 | 82篇 |
2015年 | 83篇 |
2014年 | 139篇 |
2013年 | 179篇 |
2012年 | 290篇 |
2011年 | 291篇 |
2010年 | 191篇 |
2009年 | 164篇 |
2008年 | 223篇 |
2007年 | 318篇 |
2006年 | 290篇 |
2005年 | 266篇 |
2004年 | 217篇 |
2003年 | 187篇 |
2002年 | 183篇 |
2001年 | 137篇 |
2000年 | 135篇 |
1999年 | 91篇 |
1998年 | 97篇 |
1997年 | 84篇 |
1996年 | 66篇 |
1995年 | 57篇 |
1994年 | 68篇 |
1993年 | 71篇 |
1992年 | 121篇 |
1991年 | 92篇 |
1990年 | 104篇 |
1989年 | 118篇 |
1988年 | 119篇 |
1987年 | 92篇 |
1986年 | 84篇 |
1985年 | 78篇 |
1984年 | 76篇 |
1983年 | 44篇 |
1982年 | 40篇 |
1981年 | 39篇 |
1980年 | 45篇 |
1979年 | 55篇 |
1977年 | 46篇 |
1976年 | 36篇 |
1974年 | 32篇 |
1972年 | 36篇 |
1969年 | 32篇 |
1966年 | 31篇 |
排序方式: 共有5971条查询结果,搜索用时 156 毫秒
1.
2.
3.
4.
Coccidioidomycosis is an endemic fungal infection of the desert southwestern United States of particular concern for immunosuppressed renal transplant recipients. The clinical course of coccidioidomycosis can be severe in immunosuppressed patients, with high rates of dissemination and mortality, and antifungal prophylaxis is routinely administered to high-risk patients. We sought to determine the impact of coccidioidomycosis on patients who received their renal transplant at our hospital in Phoenix, Arizona. A retrospective records review of the first 205 patients who received a renal transplant between June 1999 and December 2003 identified 6 patients (3%) who had contracted coccidioidomycosis after transplantation. All six cases occurred more than 6 months after transplantation. Two of these six patients had disseminated coccidioidomycosis. Two patients, one with pulmonary infection and one with disseminated infection, died. None of the six patients with coccidioidomycosis after transplantation had identified risk factors before transplantation. No high-risk patient who received targeted antifungal prophylaxis had a reactivation of coccidioidomycosis after transplantation. Treatment for acute rejection and induction with antithymocyte globulin did not appear to increase the risk of subsequent coccidioidomycosis. 相似文献
5.
顺铂聚乳酸微球的药物释放特性及肝动脉栓塞研究 总被引:5,自引:0,他引:5
对顺铂聚乳酸微球进行了体外药物释放和家犬肝动脉栓塞研究。该微球粒径范围为50~200μm,平均粒径为115.76±35.94μm,顺铂含量为37.16%(W/W);体外药物释放机制符合Higuchi方程;肝动脉栓塞后8h,肝组织顺铂浓度高达21.55±12.18μg/g,明显高于肝动脉灌注顺铂组:3.16±0.09μg/g(P<0.05);肝动脉栓塞组的顺铂血浓峰值、各取血点浓度及曲线下面积AUC皆低于肝动脉灌注顺铂组。可望达到提高栓塞部位的药物疗效,降低全身毒副反应的作用。 相似文献
6.
PC Chamyal A Mehta SL Ojha JR Bhardwaj 《Indian journal of otolaryngology and head and neck surgery》1991,43(1):26-27
Primary tuberculous pathology in nasolpolypi is a rare condition. A case of bilateral ethmoidal polypi with tubercular lesion diagnosed on histopathologlcal examination is being reported and the available relevant literature has been reviewed. 相似文献
7.
8.
9.
The authors investigated whether graduating students' specialty choices were influenced by favorable faculty evaluations and mini-Board scores during their third-year clerkships, and if so, whether the influences were gender-specific. Data were collected from a total of 53 students in two classes, 1988-89 and 1988-90. Univariate and multivariate tests were performed, and the results were analyzed between each class group and between genders in both groups. These results also were compared with information about the students gathered before they matriculated. In general, the results showed a gender-specific correlation: for each rotation where the women's faculty evaluations were significantly higher than the men's, the women subsequently outnumbered the men in choosing that rotation's specialty. Conversely, for each rotation where the men's mini-Board scores were significantly higher than the women's, the men outnumbered the women in choosing that rotation's specialty. The most notable difference was in pediatrics: 8% of the women had indicated an interest in that specialty on the prematriculation questionnaire, while almost one-third of the women in the classes of 1990 and 1991 chose pediatrics residencies. These findings suggest that the favorable scores and evaluations may be one of the influences for students' specialty choices, and that their influence may be gender-specific. 相似文献
10.
A L Hartley J M Birch P A McKinney V Blair M D Teare J Carrette J R Mann C A Stiller G J Draper H E Johnston et al. 《Journal of epidemiology and community health》1988,42(3):235-242
The Inter-Regional Epidemiological Study of Childhood Cancer (IRESCC) collected interview and medical information relating to the child's past medical experiences from parents of 555 children diagnosed with cancer and parents of 1110 unaffected matched controls. No significant associations emerged overall for ante-natal care, place and mode of delivery, length of gestation, birth weight, condition at birth, special care, neonatal procedures or breast-feeding. Few risk factors relating to previous illnesses and medication were found, although increasing numbers of illnesses appeared to be associated with an increased risk of childhood cancer, particularly acute lymphoblastic leukaemia. A highly significant excess of case children had not been immunised (p = 0.005). In general, these results indicate that past medical experiences have little influence on the development of cancer in children. 相似文献