Results 111 to 120 of about 129,371 (270)
Research on large-scale triaxial tests of TDA-modified ballast with different shapes
Yantu gongcheng xuebaoBallast mixed with tire-derived aggregate (TDA) is a novel method for improving the track bed, which has advantages of promoting performance of ballasted track infrastructure and enhancing the utilization rate of solid waste.
CHANG Jianmei 1, CHEN Gaoming 1, WANG Ai 1, FENG Huaiping 1, CUI Ying 2
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Prediction of Lifespan of Railway Ballast Aggregate According to Mechanical Properties of it
The Baltic Journal of Road and Bridge Engineering, 2017 As the railway lifespan is the main criterion for selection of the aggregate for ballast and for planning the maintenance of the railroad, it is important to define the relationship between the particle load resistant characteristics and a lifetime of ...
Vaidas Ramūnas +4 more
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Diatoms–copepods: An evolutionary arms race
Limnology and Oceanography, Volume 71, Issue 4, April 2026.Abstract Diatoms and copepods are dominating and diverse groups of phytoplankton and zooplankton, respectively. Diatoms account for 25–40% of ocean primary production, and their main predators, copepods, are arguably the most abundant group of metazoans in the ocean, typically accounting for ~ 80% of zooplankton biomass.
Thomas Kiørboe, Fredrik Ryderheim
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Journal of Traffic and Transportation Engineering (English ed. Online)Railway ballast is easily contaminated by different fouling material and the fouled ballast always causes the deterioration of railway track. Many previous studies focused on the effect of a certain kind of fouling material on ballast performance, but ...
Xu Zhang +4 more
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A dynamic model of ballasted rail track with bituminous sub-ballast layer [PDF]
, 2012 The bituminous sub-ballast layer within the ballasted rail track allows some mechanical and environmental advantages. An analytical model of a ballasted rail track with sub-ballast layer has been proposed by considering the rail as viscous-elastic ...
Di Liberto, CM +3 more
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Journal of Geophysical Research: Biogeosciences, Volume 131, Issue 4, April 2026.Abstract In the Western Antarctic Peninsula (WAP), marine plankton dynamics are tightly linked to the interannual variability in environmental conditions, including phenological shifts in sea‐ice seasonality. To explore these linkages, we use a 1‐dimensional vertical ocean‐ice‐ecosystem model (KPP‐Eco‐Ice, or KEI) that simulates physical and ecosystem ...
Catherine R. Czajka +6 more
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, 1975 A design study is described for a large low-cost rigid airship intended primarily for the movement of large indivisible loads (cargo) between industrial sites.
Mowforth, E.
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The ‘grand scheme of things’: biological invasions, their detection, impacts and management [PDF]
, 2014 Editorial of Management of Biological Invasions: International Journal of Applied Research on Biological Invasions, Volume 5, Issues ...
Campbell, Marnie L., MacNeil, Calum
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Journal of Geophysical Research: Biogeosciences, Volume 131, Issue 4, April 2026.Abstract The Southern Ocean accounts for >30% of the global ocean CO2 sink as a result of its solubility and biological pumps. To investigate the biological pump near Larsen C Ice Shelf (LCIS) in the Southern Ocean's western Weddell Sea, we measured the concentrations and nitrogen isotope ratios of nitrate, ammonium, and particulate organic nitrogen ...
J. Mirkin +7 more
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Stress–Dilatancy For Crushed Latite Basalt
Studia Geotechnica et Mechanica, 2018 In this article, the stress–dilatancy relationship for crushed latite basalt is analysed by using Frictional State Theory. The relationship is bilinear, and the parameters α and β determine these two straight lines.
Dołżyk-Szypcio Katarzyna
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