Results 21 to 30 of about 14,435,352 (380)

Quantum Efficiency of Quantum Dot Lasers [PDF]

, 2017
The quantum efficiency relates the calculated to the measured external threshold current of a laser. This quantity is often estimated from the length dependence of the external differential efficiency above threshold, assuming the carrier density is ...
Blood, Peter
core   +1 more source

Characteristics of whole blood donors from 26 blood stations before and after the outbreak of COVID-19:a multicenter study

Zhongguo shuxue zazhi, 2023
Objective To analyze the basic characteristics of whole blood donors from blood stations before and after the outbreak of COVID-19. Methods After excluding invalid data, data related to the basic characteristics of whole blood donors collected from 26 ...
Peng LI, Youhua SHEN, Wei GAO, Wei ZHANG, Jianling ZHONG, Hao LI, Lin BAO, Ying WANG, Xuefang FENG, Tao SUN, Xiaoqin CHEN, Li LI, Hongzhi JIA, Shouguang XU, Xiaobo CAI, Wen ZHANG, Qunying LAI, Zhiqiang YU, Zhenxing WANG, Yanjun ZHOU, Peng WANG, Yanhua ZHANG, Guoqiang ZHANG, Haiying NIU, Hongli JING   +24 more
doaj   +1 more source

Brain magnetic resonance imaging with contrast dependent on blood oxygenation.

Proceedings of the National Academy of Sciences of the United States of America, 1990
Paramagnetic deoxyhemoglobin in venous blood is a naturally occurring contrast agent for magnetic resonance imaging (MRI). By accentuating the effects of this agent through the use of gradient-echo techniques in high fields, we demonstrate in vivo images
Seijiro Ogawa, T. M. Lee, A. Kay, D. Tank   +3 more
semanticscholar   +1 more source

Imaging Studies in Focal Dystonias: A Systems Level Approach to Studying a Systems Level Disorder [PDF]

, 2014
Focal dystonias are dystonias that affect one part of the body, and are sometimes task-specific. Brain imaging and transcranial magnetic stimulation techniques have been valuable in defining the pathophysiology of dystonias in general, and are ...
Blood, Anne J
core   +1 more source

The median non-prostate cancer survival is more than 10 years for men up to age 80 years who are selected and receive curative radiation treatment for prostate cancer

Radiation Oncology, 2007
Treatment guidelines recommend that curative radiation treatment of prostate cancer be offered only to men whose life expectancy is greater than 10 years.
Pickles Tom, Blood Paul A
doaj   +1 more source

Critical Synthesis Package: Thanatophobia Scale

MedEdPORTAL, 2013
The Critical Synthesis Package contains: (1) a Critical Analysis of the psychometric properties and application to health sciences education for the Thanatophobia Scale, and (2) a copy of the Thanatophobia Scale developed by Joseph Merrill, MD.
Angela Blood, Yoon Soo Park
doaj   +1 more source

Predictors of high SARS-CoV-2 immunoglobulin G titers in COVID-19 convalescent whole-blood donors: a cross-sectional study in China

Frontiers in Immunology, 2023
BackgroundDemographic information has been shown to help predict high antibody titers of COVID-19 convalescent plasma (CCP) in CCP donors. However, there is no research on the Chinese population and little evidence on whole-blood donors.
Jingyun Tang, Humin Liu, Qing Wang, Xiaobo Gu, Jia Wang, Wenjun Li, Yinglan Luo, Yan Li, Lan Deng, Yue Luo, Xinman Du, Donglin Tan, Xuemei Fu, Xue Chen   +13 more
doaj   +1 more source

Non-linear mixed models in the analysis of mediated longitudinal data with binary outcomes

BMC Medical Research Methodology, 2012
Background Structural equation models (SEMs) provide a general framework for analyzing mediated longitudinal data. However when interest is in the total effect (i.e.
Blood Emily A, Cheng Debbie M
doaj   +1 more source

Matching strategy for patients with platelet transfusion refractoriness caused by compound antibodies against HLA and CD36

Zhongguo shuxue zazhi, 2023
Objective To search compatible and suitable platelets for platelet transfusion refractoriness (PTR) patient caused by compound antibodies against HLA and CD36.
Jing DENG, Xiuzhang XU, Huibin ZHONG, Bi ZHONG, Yangkai CHEN, Jing LIU, Haoqiang DING, Wenjie XIA, Dawei CHEN, Yaori XU, Xin YE   +10 more
doaj   +1 more source

NLRP3 Inflammasome Simultaneously Involved in Autophagy and Phagocytosis of THP-1 Cells to Clear Aged Erythrocytes

Journal of Immunology Research, 2022
Autophagy and phagocytosis are two important processes that capture and digest materials found in cellular interiors and exteriors, respectively. Aged red blood cells (RBCs) are cleared by phagocytes in vivo.
Qin Li, Fengyong Zhao, Jiamin Zhang, Ying Yang, Zhonghui Guo, Chen Wang, Qixiu Yang, Ying Sun, Ziyan Zhu   +8 more
doaj   +1 more source