Results 71 to 80 of about 104,884 (306)
Nondestructive scheme for measuring the attenuation coefficient of polymer optical fiber
, 2013 Based on the fiber macrobending and the refractive index matching technologies, a measurement scheme is proposed to gauge the attenuation coefficient of polymer optical fibers in this Letter.
Ren, Liyong, Liang, Jian, Lin, Xiao
core
The measurement of the in situ compressional wave properties of marine sediments [PDF]
, 2007 Geoacoustic inversion requires a generic knowledge of the frequency-dependence of compressional wave properties in marine sediments, the nature of which is still under debate. The use of in situ probes to measure sediment acoustic properties introduces a
Dix, J.K. +6 more
core
Choroid Plexus Enlargement and USPIO‐Based Inflammatory Feature in Cerebral Small Vessel Disease
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Objective The choroid plexus (CP) is a key component of the blood–cerebrospinal fluid barrier (BCSFB), but its mechanism of action in cerebral small vessel disease (CSVD) remains unclear. This study investigated CP volume (CPV) alterations and their association with conventional imaging markers in CSVD and explored the underlying role of ...
Yongqiang Qu +11 more
wiley +1 more source
, 2006 During the period of spring bloom from March 3 to April 16,2005 in Xiangxi Bay, The vertical attenuation coefficients (K-Sd) of downward visible irradiance( PAR) and Secchi disc transparency (Sd) were measured with a scanning spectroradiometer and a 30 ...
Ye Lin +4 more
core
, 2021 The radiogenic isotope ratio 231Pa/230Th of seawater and ocean sediments is a potentially powerful tool for tracing oceanic processes such as the ocean circulation and marine primary productivity.
Robinson, Laura F +4 more
core +1 more source
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Background and Purpose White matter hyperintensities (WMH) are a core neuroimaging marker of cerebral small vessel disease (CSVD). Sleep apnoea (SA) is a recognized vascular risk factor, but its associations with regional WMH burden, short‐interval WMH change and cognitive performance in population‐based cohorts remain incompletely defined. We
Peng Cheng +4 more
wiley +1 more source
Determination of attenuation coefficient of carbon steel by ultrasonic attenuation methods [PDF]
, 2008 Günümüzde ultrases dalgaları kullanılarak yapılan malzeme karakterizasyon çalışmalarının büyük çoğunluğu metaller üzerinde uygulanmıştır. Bu çalışmada AISI 1020 VE AISI 1040 karbon çelikleri üzerine yapılmıştır.
Sarıkaş, Mehmet
core
, 2021 The radiogenic isotope ratio 231Pa/230Th of seawater and ocean sediments is a potentially powerful tool for tracing oceanic processes such as the ocean circulation and marine primary productivity.
Robinson, Laura F +4 more
core +1 more source
Frequency dependent ultrasonic attenuation coefficient assessment in fresh tissue
Archives of Acoustics, 2015 The authors discuss the frequency dependent ultrasonic attenuation coefficient for fresh liver and fresh spleen from bovine, porcine and lamb, and fresh pancreas from bovine and futher discuss the role of these attenuation coefficients in terms of their ...
W. D. O'BRIEN, L. A. SEGAL
doaj
Rayleigh wave attenuation and phase velocity maps of the greater Alpine region from ambient noise
Scientific ReportsWe use seismic ambient noise data from 724 publicly available broadband seismic stations across central Europe to create detailed phase velocity and attenuation maps of Rayleigh waves, focusing on short periods down to 3 s.
Henrique Berger Roisenberg +4 more
doaj +1 more source