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A seismometer that can be used to study pre-quake signals.
Rev Sci Instrum
July 2022
Chemistry, Computer, and Physical Science, Southeastern Oklahoma State University, 425 W. University Blvd., Durant, Oklahoma 74701, USA.
The sensitive, broadband seismometer described in this paper is based on frequency modulation and a two-dimensional (2D) Fourier transform method to obtain time vs frequency (and seismic amplitude) recordings. The intent was to develop an instrument that could compare seismic recordings with variables (as signals) that, for rational reasons, might be active before a seismic rupture and, thus, possibly serve as quake warning indicators. Five such variables were eventually incorporated into the instrument and tested as amplitudes: electric field changes, the electromagnetic spectrum between 3 and 30 Hz (extremely low frequency as Schumann-like emissions), the electromagnetic spectrum between 0.
View Article and Find Full Text PDFTowards advancing the earthquake forecasting by machine learning of satellite data.
Sci Total Environ
June 2021
School of Informatics, University of Leicester, Leicester, United Kingdom.
Earthquakes have become one of the leading causes of death from natural hazards in the last fifty years. Continuous efforts have been made to understand the physical characteristics of earthquakes and the interaction between the physical hazards and the environments so that appropriate warnings may be generated before earthquakes strike. However, earthquake forecasting is not trivial at all.
View Article and Find Full Text PDFQuake warning funds on shaky ground.
Science
December 2017
Yunnan Normal University, Kunming, 650500, China.
Early diagnosis of dengue disease severity in a resource-limited Asian country.
BMC Infect Dis
September 2016
Virology Unit, Institut Pasteur in Cambodia, Phnom Penh, Cambodia.
Background: Dengue is endemic throughout Cambodia, a country faced with significant health and economic challenges. We undertook a clinical study at the National Paediatric Hospital in Phnom Penh to evaluate clinical diagnostic parameters for dengue and predictors of disease outcome.
Methods: Between September 2011 and January 2013, all consecutive inpatients aged between 1 and 15 years and presenting with suspected dengue were enrolled.
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