Travel in North America
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منابع مشابه
Travel Health Survey: Risk Perception, Health-Seeking Behavior, and Subjective Evaluation of Travel Health Services in Egypt
Introduction: Travel health practice and research in Egypt lag behind both needs and demands. This study was done in two parts to assess travel health knowledge, attitude, and practice (KAP) among Egyptian travelers. Methods: This survey was conducted at the departure halls of Cairo International Airport and included 1500 travelers to Africa (excluding No...
متن کاملMapping attenuation beneath North America using waveform cross- correlation and cluster analysis
[1] We measure seismic attenuation beneath North America using waveform cross-correlation and cluster analysis, and obtain images of the laterally varying anelastic structure of the upper mantle. Cluster analysis improves attenuation measurements by systematically comparing only highly similar waveforms, which reduces bias from scattering, directional differences in source functions, and source...
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تاریخ انتشار 2018