全文获取类型
收费全文 | 395篇 |
免费 | 17篇 |
国内免费 | 1篇 |
专业分类
耳鼻咽喉 | 2篇 |
儿科学 | 3篇 |
妇产科学 | 7篇 |
基础医学 | 75篇 |
口腔科学 | 8篇 |
临床医学 | 48篇 |
内科学 | 53篇 |
皮肤病学 | 3篇 |
神经病学 | 26篇 |
特种医学 | 16篇 |
外科学 | 18篇 |
综合类 | 4篇 |
预防医学 | 51篇 |
眼科学 | 81篇 |
药学 | 11篇 |
中国医学 | 1篇 |
肿瘤学 | 6篇 |
出版年
2023年 | 1篇 |
2022年 | 8篇 |
2021年 | 16篇 |
2020年 | 4篇 |
2019年 | 8篇 |
2018年 | 6篇 |
2017年 | 6篇 |
2016年 | 7篇 |
2015年 | 8篇 |
2014年 | 20篇 |
2013年 | 25篇 |
2012年 | 22篇 |
2011年 | 32篇 |
2010年 | 4篇 |
2009年 | 11篇 |
2008年 | 17篇 |
2007年 | 18篇 |
2006年 | 29篇 |
2005年 | 41篇 |
2004年 | 25篇 |
2003年 | 24篇 |
2002年 | 22篇 |
2001年 | 6篇 |
2000年 | 6篇 |
1999年 | 5篇 |
1998年 | 1篇 |
1997年 | 1篇 |
1996年 | 2篇 |
1993年 | 1篇 |
1991年 | 2篇 |
1990年 | 4篇 |
1989年 | 1篇 |
1988年 | 3篇 |
1987年 | 5篇 |
1986年 | 4篇 |
1985年 | 1篇 |
1984年 | 4篇 |
1983年 | 3篇 |
1981年 | 1篇 |
1980年 | 1篇 |
1979年 | 1篇 |
1978年 | 1篇 |
1976年 | 1篇 |
1974年 | 1篇 |
1970年 | 1篇 |
1969年 | 1篇 |
1934年 | 1篇 |
1926年 | 1篇 |
排序方式: 共有413条查询结果,搜索用时 62 毫秒
1.
Performance of a commercial, type-specific enzyme-linked immunosorbent assay for detection of herpes simplex virus type 2-specific antibodies in Ugandans 下载免费PDF全文
Laeyendecker O Henson C Gray RH Nguyen RH Horne BJ Wawer MJ Serwadda D Kiwanuka N Morrow RA Hogrefe W Quinn TC 《Journal of clinical microbiology》2004,42(4):1794-1796
Two hundred forty-eight human immunodeficiency virus (HIV)-positive and 496 HIV-negative subjects in Uganda were tested by HerpeSelect herpes simplex virus type 2 enzyme-linked immunosorbent assay (ELISA) and Western blotting to optimize the ELISA for use in this population. A higher index cutoff value was required for optimal sensitivity and specificity, and overall performance of the assay was not affected by HIV status. 相似文献
2.
We examined whether the BACTEC/Mycobacteria Growth Indicator Tube (MGIT) system alone could supplant the use of a supplemental L?wenstein-Jensen (LJ) slant for routine recovery of Mycobacterium species from clinical specimens. A total of 6,062 specimens were included in the study. Of these, 273 specimens were positive for 278 mycobacterial isolates while 15 specimens were smear positive but culture negative using both media. Further analysis showed that 143 (51.4%) of the 278 total isolates were recovered from both the MGIT and LJ media. An additional 106 isolates (38.1%) were recovered from the MGIT only, while 29 (10.4%) isolates grew only on the LJ slant. The overall sensitivities of the MGIT and LJ media were 86.5% and 59.7%, respectively, for the recovery of mycobacteria from clinical materials. This study shows that although the MGIT system demonstrates better sensitivity for the recovery of mycobacteria from clinical specimens, both media types are necessary to maximize the sensitivity of detection. 相似文献
3.
Lauren B. Headrick Cassie C. Rowe Ashley R. Kendall Michelle A. Zitt Dawn L. Bolton Bobbi Langkamp-Henken 《Journal of nutrition education and behavior》2013,45(5):460-465
ObjectiveTo compare the difference between self-reported and calculated daily energy requirements of adults within different body mass index (BMI) categories.MethodsAdults (n = 978) self-reported daily energy requirements, demographic information, and height, weight, age, and physical activity level (PAL) to calculate total energy expenditure.ResultsThe main effects of BMI, gender, PAL, and dieting status on the difference between self-reported and calculated energy requirements for weight maintenance were significant (P < .05); age, race/ethnicity, level of education, and being in a health-related field had no effect. Individuals across all BMI categories underestimated their energy requirements, but obese individuals underestimated to the greatest degree. Males, current dieters, and those who reported a low-active or active PAL underestimated to the greatest extent in each category.Conclusions and ImplicationsThere is a lack of basic nutrition knowledge about personal energy needs in individuals across all BMI categories regardless of age, race/ethnicity, level of education, or work/training in a health-related field. 相似文献
4.
Microsporidia are highly specialized obligate intracellular organisms that are closely related to fungi. Although traditionally associated with diarrheal illness in patients with AIDS, extraintestinal infections involving various organs have been reported with increasing frequency in the past decade, particularly in immunocompromised hosts. Diagnosis is usually accomplished by light microscopic identification of spores in body fluids and tissues, using a variety of stains. Transmission electron microscopy, immunofluorescence assays, or molecular methods are necessary for identification to the genus and species level. Early diagnosis is essential for preventing the significant associated morbidity and mortality of extraintestinal microsporidiosis. 相似文献
5.
6.
7.
8.
9.
Bobbi J. Anderson Susan S. Girdler PhD Kathleen C. Light PhD 《Behavioral medicine (Washington, D.C.)》2013,39(3):123-130
Abstract The authors investigated the relationship between brief warm social and physical contact among cohabitating couples and blood pressure (BP) reactivity to stress in a sample of healthy adults (66 African American, 117 Caucasian; 74 women, 109 men). Prior to stress, the warm contact group underwent a 10-minute period of handholding while viewing a romantic video, followed by a 20-second hug with their partner, while the no contact group rested quietly for 10 minutes and 20 seconds. In response to a public speaking task, individuals receiving prestress partner contact demonstrated lower systolic BP, diastolic BP, and heart rate increases compared with the no contact group. The effects of warm contact were comparable for men and women and were greater for African Americans compared with Caucasians. These findings suggest that affectionate relationships with a supportive partner may contribute to lower reactivity to stressful life events and may partially mediate the benefit of marital support on better cardiovascular health. 相似文献
10.