Results 41 to 50 of about 129,371 (270)
Construction and Building Materials, 2020 Recently, implementing steel slag ballast has been proposed as an appropriate material to substitute stone ballast. In this regard, one of the technical concerns is the behavior of steel slag ballast in both time and frequency domains that needs to be ...
G. Jing +3 more
semanticscholar +1 more source
Journal of Marine Science and EngineeringActive substance-based Ballast Water Management Systems (BWMS) can generate disinfection by-products (DBPs) by reacting with dissolved organic matter (DOM). However, current IMO G9-based assessments often overlook qualitative DOM variations.
Hyung-Gon Cha +6 more
doaj +1 more source
Applied Sciences, 2017 Transition zones in railway tracks are the locations with considerable changes in vertical support structures, e.g., near bridges. Due to possible water flow constrictions in transition zone structures, there is frequently an increased moisture level in ...
Haoyu Wang +3 more
doaj +1 more source
, 2021 Ballast rheology is a phenomenon that describes movements of ballast particles due to the discrete nature, which eventually leads to the ballast bed fluid deformation after a long-time service.
Yunlong Guo +3 more
semanticscholar +1 more source
Journal of Marine Science and EngineeringBallast water management systems (BWMSs) using active substances (AS) have been subjected to land-based tests with artificially increased dissolved organic matter (DOM) and cultured species according to the International Maritime Organization G9 ...
Hyung-Gon Cha +6 more
doaj +1 more source
Analysis of mesoscopic mechanical dynamic characteristics of ballast bed with under sleeper pads
Railway Engineering Science, 2023 The meso-dynamical behaviour of a high-speed rail ballast bed with under sleeper pads (USPs) was studied. The geometrically irregular refined discrete element model of the ballast particles was constructed using 3D scanning techniques, and the 3D dynamic
Xiong Yang +5 more
doaj +1 more source
Mid-ocean exchange of container vessel ballast water. 1: seasonal factors affecting the transport of harmful diatoms and dinoflagellates [PDF]
, 1999 Our study of 34 ships (20 direct from Oakland, California, USA, and 14 more after open ocean exchange) is the first year-long seasonal study to assess the effectiveness of open ocean exchange of ballast waters.
Dickman, MD, Zhang, FZ
core +1 more source
Shear resistance improvement of oil-contaminated ballast layer with rubber shred inclusions [PDF]
, 2016 Railway ballast, which form an integral part of rail tracks, is highly susceptible to subsistence due to both vibration transmitted by the passing trains, as well as the breakage of ballasts with repeated impact.
Chan, Chee Ming +1 more
core
Broadening the semiaquatic scene: Quantification of long bone microanatomy across pinnipeds
The Anatomical Record, EarlyView.Abstract Investigations of bone microanatomy are commonly used to explore lifestyle strategies in vertebrates. While distinct microanatomical limb bone features have been established for exclusively aquatic and terrestrial lifestyles, identifying clear patterns for the semiaquatic lifestyle remains more challenging.
Apolline Alfsen +10 more
wiley +1 more source
Journal of the Mechanical Behavior of Materials, 2019 Railroad ballast structure layer may experience a decline in mechanical and geometrical performance due to heavy train and environmental loads. In order to improve the quality of ballast structure, the addition of asphalt to ballast layer can be ...
Setiawan Dian M.
doaj +1 more source