Results 11 to 20 of about 444,589 (264)
Attenuation by Targeting the B- and T-Cell Attenuator [PDF]
Transplantation, 2011 BTLA is a member of the immunoglobulin family thought to serve as a negative costimulatory molecule on activated T cells. Several recent studies, including the one published in this issue by del Rio and colleagues, have used BTLA-deficient mice and/or anti-BTLA antibodies to investigate the role of BTLA in regulating graft versus host reaction (GvHR ...
Maria-Luisa, Alegre, Yang-Xin, Fu
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Attenuation of Vaccinia Virus [PDF]
Acta Naturae, 2015 Since 1980, in the post-smallpox vaccination era the human population has become increasingly susceptible compared to a generation ago to not only the variola (smallpox) virus, but also other zoonotic orthopoxviruses. The need for safer vaccines against orthopoxviruses is even greater now.
YAKUBITSKIY S.N. +3 more
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Light attenuation coefficient of polarization attenuator at high attenuation level
Acta Physica Sinica, 2010 By use of the Jones vector we deduced the Jones matrix of actual polarizer and light transmission expression, as well as the light attenuation coefficient （LAC） of two polarizers. According to computation, certain error exists when using Malus-Law to calculate polarizer’s light attenuation ratio at high attenuation level.
null Huang Chong +3 more
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Evaluating the applicability of a screen diffraction approximation to local volcano infrasound
Volcanica, 2021 Atmospheric acoustic waves from volcanoes at infrasonic frequencies (0.01–20 Hz) can be used to estimate source parameters for hazard modeling, but signals are often distorted by wavefield interactions with topography, even at local recording distances (
Sean Maher +4 more
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Geophysical Research Letters, 2016 We present a simple procedure concerning the application of the Kramers‐Kronig relation for the validation of the laboratory measurements of the extensional attenuation and Young's modulus carried out on the solid specimens at seismic frequencies.
Vassily Mikhaltsevitch +2 more
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Revista Águas Subterrâneas, 2013 In-situ anaerobic bioremediation is an elegant method for decontaminating groundwater containing halogenated hydrocarbons and other toxic contaminants.
JOHN FREIM +4 more
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Attenuation correction in SPECT without attenuation map [PDF]
2011 IEEE Nuclear Science Symposium Conference Record, 2011 A method of attenuation correction in Single Photon Emission Computed Tomography (SPECT), based on emission data only is presented. The algorithm uses the well known Helgason-Ludwig consistency conditions. However, it does not attempt to find the attenuation map, but rather the correction factors for the projection data, which makes the problem simpler
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Numerical Analysis of Ultrasonic Multiple Scattering for Fine Dust Number Density Estimation
Applied Sciences, 2021 In this study, a method is presented for estimating the number density of fine dust particles (the number of particles per unit area) through numerical simulations of multiply scattered ultrasonic wavefields.
Homin Song, Ukyong Woo, Hajin Choi
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Photonics, 2022 In recent years, the THz frequency band (0.3 THz–10 THz) has attracted an increasing research interest for the realization of emerging high-speed wireless communication links.
George K. Varotsos +2 more
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Attenuated Psychosis Syndrome [PDF]
Indian Journal of Psychological Medicine, 2014 Byline: M. Reddy Diagnostic and Statistical Manual of Mental Disorders, 5 [sup]th edition (DSM - 5) included attenuated psychosis syndrome (APS) in Section III under "conditions for further study". The DSM - 5 task force determined that there was insufficient evidence to warrant inclusion of APS as official mental disorder diagnosis in Section II. "The
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