Results 41 to 50 of about 6,118 (211)
Mesoscale Circulation and Coral Community Disturbance at Isolated Reefs
Global Change Biology Communications, EarlyView.The Loop Current is a seasonally and interannually dynamic mesoscale oceanographic feature in the Gulf of Mexico that strongly influences connectivity and environmental conditions across the region. We investigated the influence of Loop Current variability on coral reef disturbances at isolated reefs in the northwest Gulf, including coral disease ...
Gaby E. Carpenter +7 more
wiley +1 more source
Shock and Vibration, 2021 To study the mechanical characteristics of ballasted bed under dynamic stability, a three-dimensional discrete element model of ballasted bed with 1000 mm × 700 mm × 550 mm is established based on the discrete element method. Meanwhile, a simulation test
Lihua Wang +5 more
doaj +1 more source
Applied Sciences, 2021 This study investigates a load-based, track-irregularity-analysis technique for ballasted tracks on a serviced railway line with respect to excavation work conducted in adjacent sites.
Jung-Youl Choi +3 more
doaj +1 more source
Metal Hydrides‐Based Hydrogen Purification Systems—A Review
MetalMat, EarlyView.Metal hydrides as an innovative means to purify hydrogen can enable new avenues in the use of hydrogen as a clean energy vector across its production methods. ABSTRACT This review investigates the critical role of purification for enabling the use of hydrogen from various production pathways.
Cameron Reid +2 more
wiley +1 more source
Track Modulus Assessment of Engineered Interspersed Concrete Sleepers in Ballasted Track
Applied Sciences, 2020 Ballasted railway track is typically constructed using sleepers that are manufactured from a common material type within a given length of track. Timber and concrete are the two most common sleeper materials used internationally. Evidence from historical
Arthur de Oliveira Lima +3 more
doaj +1 more source
Dynamic effect of high speed railway traffic loads on the ballast track settlement [PDF]
, 2011 The traditional ballast track structures are still being used in high speed railways lines with success, however technical problems or performance features have led to non-ballast track solution in some cases.
Gabaldón Castillo, Felipe +2 more
core +1 more source
Journal of Field Robotics, EarlyView.ABSTRACT Collaborative operation of multiple autonomous underwater vehicles (AUVs) can effectively achieve scientific goals that are hard to achieve by independently operated vehicles. Some science payloads are large, expensive, and need to be installed in the vehicle's nose cone. A vehicle can only carry one such payload.
Yanwu Zhang +9 more
wiley +1 more source
Integrative Zoology, EarlyView.This study investigates the potential adaptive advantages of female‐specific UV‐induced fluorescence in male mate‐choice and predation risk, as fitness costs, using two species of ornate jumping spiders Phintella vittata and Ph. bifurcilinea. Our findings provide empirical evidence of a trade‐off: While fluorescence enhances male mate preference, it ...
Yingna Zhou +4 more
wiley +1 more source
Fast computation: a steady-state simulation of railways ballasted track settlement [PDF]
, 2017 Geometryofballastedrailwaystrackisamajorconcerninrailroadssafetyand efficiency. Settlement of railways ballast has been studied to help railway infrastructure managers to keep infrastructures in shape and to prevent accidents.
Badinier, Thibault +2 more
core
Understanding track loading requirements to achieve better track design [PDF]
, 2016 This paper reviews current track loading requirement (ballasted and ballastless) Typical vehicle-track interaction loads are described along with their influential factors.
Bezin, Yann +3 more
core +1 more source