Results 61 to 70 of about 551,389 (167)

Cyanobacteria Sustain Deep Ocean Carbon Sequestration Despite Eukaryotic Loss

open access: yesAGU Advances, Volume 7, Issue 6, September 2026.
Abstract The biological carbon pump exports phytoplankton‐derived organic carbon to the deep ocean, regulating long‐term carbon sequestration and climate. Yet how phytoplankton community composition controls the magnitude and efficiency of this process remains poorly understood.
Jingjing Zhang   +10 more
wiley   +1 more source

Numerical analysis of beam rail bridges with random track irregularities

open access: yesMATEC Web of Conferences, 2018
The study focuses on dynamic analysis of composite bridge / track structure / train systems (BTT systems) with random vertical track irregularities taken into consideration.
Podwórna Monika
doaj   +1 more source

The Last Line

open access: yes
Critical Quarterly, EarlyView.
Beci Carver
wiley   +1 more source

Biomineral Formation in the Subtropical South Pacific: Insights From Major Ions and Carbonate Chemistry Along GEOTRACES Section GP21

open access: yesGlobal Biogeochemical Cycles, Volume 40, Issue 9, September 2026.
Abstract The South Pacific Ocean (SPO) hosts diverse biogeographical environments including the productive Peru‐Chile upwelling region and ultra‐oligotrophic subtropical gyre; however, vast areas are understudied regarding the cycling of dissolved calcium (Ca) and strontium (Sr), and distribution of major biomineral‐forming pelagic marine organisms ...
Edel M. O'Sullivan   +7 more
wiley   +1 more source

Failure and reconstruction of a gantry crane ballasted track

open access: yes, 2001
The paper deals with the reconstructions that were undertaken to correct multiple ballasted track foundation failures for a heavy gantry crane initially constructed in 1985.
Gerald P Raymond
core   +1 more source

Track behaviour: the importance of the sleeper to ballast interface

open access: yes, 2008
The aim of this research is to develop a fuller understanding of the mechanical behaviour of thesleeper/ballast interface, related in particular, to the forces applied by high speed tilting trains onlow radius curves.
Le Pen, Louis
core   +1 more source

Phaeocystis Dominance of a Large‐Scale Productivity Anomaly in the Northeast Atlantic Ocean During Spring 2024

open access: yesJournal of Geophysical Research: Oceans, Volume 131, Issue 9, September 2026.
Abstract Changes to the North Atlantic spring bloom phytoplankton community structure are expected in response to regional warming trends. In 2024 an extensive body of low chlorophyll water, covering approximately 720,000 km2 in area, dominated the Northeast Atlantic during the peak of the spring bloom period.
S. C. Painter   +11 more
wiley   +1 more source

Full-scale multi-functional test platform for investigating mechanical performance of track–subgrade systems of high-speed railways

open access: yesRailway Engineering Science, 2020
Motivated by the huge practical engineering demand for the fundamental understanding of mechanical characteristics of high-speed railway infrastructure, a full-scale multi-functional test platform for high-speed railway track–subgrade system is developed
Wanming Zhai   +5 more
doaj   +1 more source

Ship‐Based GNSS Tsunami Detection: Pilot Network Demonstration

open access: yesJournal of Geophysical Research: Oceans, Volume 131, Issue 9, September 2026.
Abstract We demonstrate the potential for ship‐based GNSS systems to contribute to tsunami warning. We built a pilot network of 10 ships—8 commercial and 2 research vessels—equipped with a tsunami detection package consisting of a geodetic‐grade GNSS antenna and receiver, and satellite internet communications.
James H. Foster   +3 more
wiley   +1 more source

Spatial Variability in Phytoplankton Response to Projected Increases in Iron and Temperature in the Ross Sea

open access: yesJournal of Geophysical Research: Oceans, Volume 131, Issue 9, September 2026.
Abstract The Ross Sea supports massive phytoplankton blooms and exhibits the highest marine primary productivity rates due to seasonal relief of iron and light limitations. Although Earth System Models project regional increases in temperature and iron supply, there is uncertainty regarding the response of different phytoplankton communities. To assess
A. Cristi   +5 more
wiley   +1 more source

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