Results 41 to 50 of about 15,390,687 (342)

Machine Learning to Predict Brain Amyloid Pathology in Pre-dementia Alzheimer’s Disease Using QEEG Features and Genetic Algorithm Heuristic

Frontiers in Computational Neuroscience, 2021
The use of positron emission tomography (PET) as the initial or sole biomarker of β-amyloid (Aβ) brain pathology may inhibit Alzheimer’s disease (AD) drug development and clinical use due to cost, access, and tolerability.
Nam Heon Kim, Dong Won Yang, Seong Hye Choi, Seung Wan Kang, Seung Wan Kang   +4 more
doaj   +1 more source

Zero gas reference standards

Analytical Methods, 2016
High purity nitrogen or air, often referred to as zero gas, is essential for calibrating instrumentation used in a wide variety of measurements, such as air quality monitoring.
Minarro, Marta Doval, Brewer, Paul J., Brown, Richard J. C., Persijn, Stefan, van Wijk, Janneke, Nieuwenkamp, Gerard, Baldan, Annarita, Kaiser, Claire, Sutour, Christophe, Mace, Tatiana, Skundric, Nikola, Tarhan, Tanil   +11 more
openaire   +2 more sources

Official ERS technical standard: Global Lung Function Initiative reference values for static lung volumes in individuals of European ancestry

European Respiratory Journal, 2021
Background Measurement of lung volumes across the life course is critical to the diagnosis and management of lung disease. The aim of the study was to use the Global Lung Function Initiative methodology to develop all-age multi-ethnic reference equations
G. Hall, Nicole Filipow, G. Ruppel, Tolu Okitika, Bruce R Thompson, J. Kirkby, I. Steenbruggen, B. Cooper, S. Stanojevic   +8 more
semanticscholar   +1 more source

The impact of GE Lunar vs ICMR database in diagnosis of osteoporosis among South Indian subjects

Indian Journal of Endocrinology and Metabolism, 2019
Objective: To study the effect of choosing ICMR reference values on the classification of bone mineral density in Indian patients. Design: Retrospective analysis of Dual Energy X-ray absorptiometry (DEXA) and clinical data.
Karthik Balachandran, Adlyne Reena Asirvatham, Shriraam Mahadevan   +2 more
doaj   +1 more source

Development of an indirect competitive ELISA based on immunomagnetic beads’ clean-up for detection of maduramicin in three chicken tissues

Food and Agricultural Immunology, 2018
An indirect competitive enzyme-linked immunosorbent assay (ic-ELISA) based on immunomagnetic beads' (IMBs) clean-up was developed for detection of the residues of maduramicin (MD) in different chicken tissues.
Meirong Song, Zhiming Xiao, Yanan Xue, Xiya Zhang, Shuangyang Ding, Jiancheng Li   +5 more
doaj   +1 more source

Moving Toward a Consensus DSC-MRI Protocol: Validation of a Low–Flip Angle Single-Dose Option as a Reference Standard for Brain Tumors

American Journal of Neuroradiology, 2019
DSC-MR imaging using preload, intermediate (60°) flip angle and postprocessing leakage correction has gained traction as a standard methodology. Simulations suggest that DSC-MR imaging with flip angle = 30° and no preload yields relative CBV practically ...
K. Schmainda, M. Prah, Leland S. Hu, C. Quarles, N. Semmineh, S. Rand, Jennifer M. Connelly, B. Anderies, Y. Zhou, Ying Liu, Brent R. Logan, Ashley M. Stokes, Grayson L. Baird, J. Boxerman   +13 more
semanticscholar   +1 more source

Measurement of Synchrotron x-ray energies and line shapes using diffraction markers [PDF]

, 1982
Standard reference markers for accurate, reproducible synchrotron x-ray energies are obtained using a three Si crystal spectrometer. The first two crystals are in the monochromator and the third is used to obtain diffraction markers which monitor the ...
A. Thompson, D. Goodin, J. Code, J. Reynolds, J. V. Acrivos, K. Hathaway, M. P. Klein, S. Parkin   +7 more
core   +3 more sources

The Likelihood of DCC Formation [PDF]

, 1998
We estimate the probability that a disoriented chiral condensate forms during the spherical expansion of a hot medium described by the linear sigma model.Comment: 12 pages, latex2e, 2 figures in postscript, uses (included) boldgreek.sty and standard ...
Amelino-Camelia, André Krzywicki, Blaizot, Combescure, Cooper, Cooper, Julien Serreau, Randrup   +7 more
core   +5 more sources

Improving the reference standard for the diagnosis of canine visceral leishmaniasis: a challenge for current and future tests

Memórias do Instituto Oswaldo Cruz, 2019
BACKGROUND Studies aimed at validating canine visceral leishmaniasis diagnostic tests present heterogeneous results regarding test accuracy, partly due to divergences in reference standards used and different infection evolution periods in animals ...
Ana Izabel Passarella Teixeira, Débora Marcolino Silva, T. Vital, N. Nitz, B. D. de Carvalho, M. Hecht, D. Oliveira, E. Oliveira, A. Rabello, G. Romero   +9 more
semanticscholar   +1 more source

Standardisation of the method for prekallikrein activator determination in human immunoglobulin and albumin products

Биопрепараты: Профилактика, диагностика, лечение, 2022
Assessment of prekallikrein content is essential for safety control of human immunoglobulin and albumin products. The inherent variability of human prekallikrein reagents and chromogenic substrates indicates the need for standardisation of the ...
O. G. Kornilova, M. A. Krivykh, A. A. Voropaev, O. V. Fadeikina, R. A. Volkova   +4 more
doaj   +1 more source