Results 61 to 70 of about 6,118 (211)

Discreet element modeling of under sleeper pads using a box test [PDF]

open access: yes, 2018
It has recently been reported that under sleeper pads (USPs) could improve ballasted rail track by decreasing the sleeper settlement and reducing particle breakage.
A Johansson   +35 more
core   +2 more sources

Anomalously Low New Production in the Northeast Atlantic During Spring 2024: A Consequence of Weaker Winter Mixing?

open access: yesJournal of Geophysical Research: Oceans, Volume 131, Issue 2, February 2026.
Abstract In 2024 an anomalous region of low chlorophyll water covering ∼721,000 km2 or 1.7% of North Atlantic surface area dominated the Northeast Atlantic. This feature formed during spring, remained identifiable as a region of low chlorophyll throughout the summer months in temperate and subpolar waters and, due to low opal ballasting potential of ...
S. C. Painter   +9 more
wiley   +1 more source

Steel Slag Sub-Ballast for Sustainable Railway Track Infrastructure

open access: yesInfrastructures
Railway lines require a significant amount of natural raw materials. Industrial by-products can be used instead, reducing the costs of natural aggregate exploration.
Rubens Alves   +4 more
doaj   +1 more source

Buckling of a ballasted curved track under unloaded conditions

open access: yesAdvances in Mechanical Engineering, 2021
There is no industry accepted analytical model to compute the critical temperature differential for the buckling of an unloaded curved track in North American literature.
Nazmul Hasan
doaj   +1 more source

Simple dynamic model of predicting the axle-box acceleration when trains pass through the rupture part of rails

open access: yesNihon Kikai Gakkai ronbunshu, 2021
In this paper, the simple dynamic model for calculation of the axle-box acceleration (ABA) is established for conveniently detecting rail breakage on trains.
Hiroyuki AIZAWA   +2 more
doaj   +1 more source

General and Technical Considerations for Implementing High Speed Rail Systems in Australia [PDF]

open access: yes, 2012
Australia has a number of medium speed rail services such as the Prospector, which runs from East Perth to Kalgoorlie, at speeds of up to 160 km/hr. Speeds as high as 210 km/hr have been reached by the tilt train from Brisbane to Rockhampton.
Fatahi, B, Khabbaz, H
core  

Assessing the Role of Longitudinal Variability of Vertical Track Stiffness in the Long-Term Deterioration [PDF]

open access: yes, 2016
The performance of the railway system in terms of dynamic loading is depending mainly on the track support conditions. Usually, the track stiffness is used as the main parameter to describe the support conditions and is defined as the ratio of the load ...
Bezin, Yann   +2 more
core   +1 more source

Seasonal Changes in Marine Archaeal Tetraether Lipid Export Depth Linked to Net Primary Productivity

open access: yesPaleoceanography and Paleoclimatology, Volume 41, Issue 2, February 2026.
Abstract Marine ammonia oxidizing archaea (AOA) produce isoprenoid glycerol dibiphytanyl glycerol tetraethers (GDGTs) which form the basis of seawater temperature proxy TEX86. Although most studies use TEX86 for sea surface temperature (SST) reconstructions, maximum GDGT production occurs at and below the nitracline. Moreover, sedimentary GDGT‐2/GDGT‐3
Addison Rice   +12 more
wiley   +1 more source

Properties and Limitations of eDNA Substrates for Terrestrial Animal Monitoring

open access: yesMolecular Ecology Resources, Volume 26, Issue 2, February 2026.
ABSTRACT Environmental DNA (eDNA) constitutes a valuable tool for monitoring terrestrial animal diversity, but outcomes are affected by multiple factors. Among these factors, the choice of sampling substrate and method is especially important and must be aligned with research objectives.
Beilun Zhao, Tobias Andermann
wiley   +1 more source

Preventing financial ruin: How the West India trade fostered creativity in crisis lending by the Bank of England

open access: yesThe Economic History Review, Volume 79, Issue 1, Page 57-88, February 2026.
Abstract This paper contributes to the understanding of the complex relationship between British economic performance during the Napoleonic wars and the ‘West Indies’, as the Caribbean slave colonies were called. Not only did profits from slave‐based commerce provide financing for the growth of the financial sector, as has been claimed, but the risk of
Carolyn Sissoko, Mina Ishizu
wiley   +1 more source

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