Visit-to-Visit Blood Pressure Variability and Carotid Artery Atherosclerosis: Heart Rate Was Not a Confounder To the Editor: We read the interesting recent article by Muntner et al,1 who found that increased visit-to-visit systolic blood pressure (SBP) variability was a significant predictor for all-cause mortality independently of age, sex, and average SBP. On the other hand, in the Letter to ...

To date, the spring stiffness of resilience pads was mostly evaluated based on conventional (site measurement and laboratory tests) methods. Most studies in past analyzed effects deterioration track damage. examine pads, evaluations were conducted tests using site measurements samples collected from site, or loading special equipment. such as TSS. However, no methodology proposed to prove theor...

[1] We have investigated the environmental controls of seasonally resolved records of oxygen and carbon isotopes of modern Mercenaria mercenaria bivalves collected live from five coastal sites along the east coast of North America. Seasonal profiles of dO and dC obtained by subsampling the incremental growth layers of aragonite were compared with in situ historical records of temperature and sa...

The design of high-speed railway lines involves geotechnical challenges, one which is the risk dynamic track amplification, for example on sections where train speed approaches track-ground critical speed. In these cases, soil strains increase significantly with an in speed, far exceeding limits linear elastic behaviour. This can result a non-linear reduction stiffness. To better understand thi...

Background: In order to study the applicability of Low Vibration Track (LVT) in heavy-haul railway tunnels, this paper carried out research on dynamic effects LVT wheels and rails provided a technical reference for structural design track structures. Methods: Based system dynamics response sensitivity vehicle-track coupling dynamics, stability upper train, deformation tendency, under influence ...