全文获取类型
收费全文 | 184篇 |
免费 | 10篇 |
专业分类
儿科学 | 7篇 |
妇产科学 | 1篇 |
基础医学 | 35篇 |
口腔科学 | 3篇 |
临床医学 | 61篇 |
内科学 | 21篇 |
皮肤病学 | 1篇 |
神经病学 | 21篇 |
外科学 | 15篇 |
综合类 | 1篇 |
预防医学 | 13篇 |
眼科学 | 4篇 |
药学 | 8篇 |
肿瘤学 | 3篇 |
出版年
2020年 | 3篇 |
2019年 | 2篇 |
2018年 | 1篇 |
2017年 | 1篇 |
2016年 | 2篇 |
2015年 | 3篇 |
2014年 | 4篇 |
2013年 | 5篇 |
2012年 | 4篇 |
2011年 | 21篇 |
2010年 | 11篇 |
2009年 | 9篇 |
2008年 | 18篇 |
2007年 | 14篇 |
2006年 | 19篇 |
2005年 | 16篇 |
2004年 | 11篇 |
2003年 | 17篇 |
2002年 | 11篇 |
2001年 | 2篇 |
2000年 | 4篇 |
1999年 | 2篇 |
1998年 | 2篇 |
1991年 | 3篇 |
1990年 | 2篇 |
1989年 | 1篇 |
1988年 | 1篇 |
1987年 | 1篇 |
1986年 | 1篇 |
1980年 | 1篇 |
1978年 | 1篇 |
1965年 | 1篇 |
排序方式: 共有194条查询结果,搜索用时 15 毫秒
71.
Frey AB Wilson DA LaSalvia MM Tan CD Rodriguez ER Shrestha NK Hall GS Procop GW 《American journal of clinical pathology》2011,136(5):686-689
We use the BD GeneOhm StaphSR Assay (BD Diagnostics, Oakville, Canada) to screen for Staphylococcus aureus nasal colonization and sought to evaluate this assay for the assessment of valve specimens from patients with endocarditis. We examined 23 paired fresh and formalin-fixed, paraffin-embedded cardiac valve tissue samples, 12 of which had S aureus endocarditis, using the BD GeneOhm StaphSR Assay for the detection and differentiation of methicillin-susceptible and methicillin-resistant S aureus. This assay appropriately characterized all specimens with respect to the presence or absence of S aureus. There was an 87.5% correlation between the presence or absence of the mecA gene and the oxacillin susceptibility results for the S aureus isolates studied. The GeneOhm StaphSR assay accurately detected S aureus in cardiac valve tissue samples. Rare discordances were observed between oxacillin susceptibility status and mecA gene detection by this assay. 相似文献
72.
Hanten G Scheibel RS Li X Oomer I Stallings-Roberson G Hunter JV Levin HS 《Neurocase》2006,12(4):247-251
Decision-making under conditions of uncertainty was studied in 11 children with moderate to severe post-acute traumatic brain injury (TBI) using a modification of the Iowa Gambling Task (Bechara et al., 1994). We hypothesized that decision-making would be compromised in children with TBI. The results revealed that when divided into subgroups by lesion location, children with lesions in the amygdala (AM) were impaired on modified gambling task performance, but children with ventromedial (VM) lesions did not appear to be impaired on the task. These results are in contrast to studies of decision-making in adults with focal lesions of vascular etiology. 相似文献
73.
Multicenter evaluation of the Candida albicans/Candida glabrata peptide nucleic acid fluorescent in situ hybridization method for simultaneous dual-color identification of C. albicans and C. glabrata directly from blood culture bottles 下载免费PDF全文
Shepard JR Addison RM Alexander BD Della-Latta P Gherna M Haase G Hall G Johnson JK Merz WG Peltroche-Llacsahuanga H Stender H Venezia RA Wilson D Procop GW Wu F Fiandaca MJ 《Journal of clinical microbiology》2008,46(1):50-55
We evaluated the performance of the Candida albicans/Candida glabrata peptide nucleic acid fluorescent in situ hybridization (PNA FISH) method, a rapid two-color assay for detection of C. albicans and C. glabrata, in a multicenter study. The assay is designed for use directly from positive blood culture bottles in a FISH format. Intact, fixed cells are labeled fluorescent green (C. albicans) or fluorescent red (C. glabrata) by rRNA hybridization of fluorophore-labeled PNA probes. Results are available <3 h after cultures signal positive. An evaluation of 197 routine blood culture bottles newly positive for yeast by Gram staining was performed at five hospitals. The sensitivities of detection for C. albicans, and C. glabrata were 98.7% (78/79) and 100% (37/37), respectively, and the specificity for both components of the assay was 100% (82/82). The assay was also evaluated with 70 fungal reference strains and was challenged in the BacT/ALERT microbiological detection system with spiked blood culture bottles. These results support the use of the assay for rapid, simultaneous identification of C. albicans and C. glabrata in positive blood culture bottles. This rapid assay may aid in the selection of initial antifungal drugs, leading to improved patient outcomes. 相似文献
74.
75.
76.
77.
78.
Lin JJ Hanten WP Olson SL Roddey TS Soto-Quijano DA Lim HK Sherwood AM 《Journal of rehabilitation research and development》2005,42(2):199-210
The high prevalence of shoulder-related dysfunction has focused increased attention on functional activity assessment. This study (1) tested the reliability of three-dimensional shoulder complex movements during four functional tasks representing different levels of task difficulty, (2) characterized the four functional tasks, and (3) examined the relationships between age and shoulder movements. Twenty-five asymptomatic subjects, all veterans aged 30-82, performed the four functional tasks. Good within-session reliability was found (movement pattern: similarity index = 0.81 to 0.97, peak values: intraclass correlation coefficients = 0.88 to 0.99). The raising arm to overhead height task (hard task) placed the greatest demand on scapular motions and humeral elevation (p < 0.005). During the functional tasks, significant correlations existed between age and scapular tipping, humeral elevation, and scapular upward rotation (r = -0.62 to 0.50, p < 0.05). Correlation results indicated that elderly subjects have a greater potential for serratus anterior muscle weakness and shoulder capsule tightness. 相似文献
79.
80.
Newsome MR Steinberg JL Scheibel RS Troyanskaya M Chu Z Hanten G Lu H Lane S Lin X Hunter JV Vasquez C Zientz J Li X Wilde EA Levin HS 《Neuropsychology》2008,22(4):419-425
Eight adolescents (ages 13-18 years) who sustained traumatic brain injury (TBI) and eight gender- and age-matched typically developing (TD) adolescents underwent event-related functional MRI (fMRI) while performing a Sternberg letter recognition task. Encoding, maintenance, and retrieval were examined with memory loads of one or four items during imaging. Both groups performed above a 70% accuracy criterion and did not differ in performance. TD adolescents showed greater increase in frontal and parietal activation during high-load relative to low-load maintenance than the TBI group. The TBI patients showed greater increase in activation during high-load relative to low-load encoding and retrieval than the TD group. Results from this preliminary study suggest that the capability to differentially allocate neural resources according to memory load is disrupted by TBI for the maintenance subcomponent of working memory. The overrecruitment of frontal and extrafrontal regions during encoding and retrieval following TBI may represent a compensatory process. 相似文献