Results 51 to 60 of about 54,728 (216)

Spatial and Temporal Variability of Eastern Pacific Radiocarbon and Carbon Chemistry From the Ice Age to Today

open access: yesPaleoceanography and Paleoclimatology, Volume 41, Issue 5, May 2026.
Abstract Proxy records of seawater radiocarbon (14C/C) provide strong constraints on how changes in ocean ventilation contributed to the increase in atmospheric CO2 during the termination of the last ice age (≈18,000‐to‐12,000 years ago). One outstanding problem, however, is the existence of anomalously low deglacial benthic foraminiferal 14C/C in the ...
Patrick A. Rafter   +14 more
wiley   +1 more source

Fibonacci Tessellation for Optimizing Planar Phased Arrays in Satellite Communications

open access: yesTechnologies
This article presents a novel strategy for the design of planar phased arrays using Fibonacci-based partitioning combined with a random multi-objective search.
Juan L. Valle   +5 more
doaj   +1 more source

High‐Resolution Observations Unveil (Sub)Mesoscale Heat Fluxes Shaping Upper‐Ocean Heat Content

open access: yesGeophysical Research Letters, Volume 53, Issue 8, 28 April 2026.
Abstract Upper‐ocean heat content (UOHC) modulates air–sea exchange in tropical regions; however, its variability at (sub)mesoscale remains insufficiently resolved. Here we combine Surface Water and Ocean Topography (SWOT) observations with high‐resolution glider sections in the northeastern tropical Pacific, where mesoscale eddies and sharp frontal ...
Mathieu Gentil   +5 more
wiley   +1 more source

Plasmon Induced Photocatalysts for Light-Driven Nanomotors

open access: yesMicromachines, 2021
Micro/nanomachines (MNMs) correspond to human-made devices with motion in aqueous solutions. There are different routes for powering these devices. Light-driven MNMs are gaining increasing attention as fuel-free devices.
Enrique Contreras   +3 more
doaj   +1 more source

Cruise Report 70-S-5: Big Game Fish [PDF]

open access: yes, 1970
(PDF contains 4 ...
Collins, Robson A.
core  

Interactive Effects of Temperature and Soybean Meal‐Based Diets on the Physiological Status of Juvenile Totoaba macdonaldi: Growth and Blood Parameters

open access: yesAquaculture, Fish and Fisheries, Volume 6, Issue 2, April 2026.
ABSTRACT Growth and haematological parameters are used in aquaculture as indicators of the health of cultivated fish in response to changes in diet and the physicochemical conditions of the water. In this study, the physiological status of Totoaba macdonaldi was evaluated based on growth, haematological parameters and blood chemistry in response to two
Eloy Eduardo Yen‐Ortega   +2 more
wiley   +1 more source

Biogeochemical Response to Mesoscale Eddies and Tehuano Wind Events in the Oxygen Minimum Zone off the Gulf of Tehuantepec

open access: yesJournal of Geophysical Research: Oceans, Volume 131, Issue 4, April 2026.
Abstract In the oxygen minimum zone of the eastern tropical North Pacific off the Gulf of Tehuantepec, mesoscale eddies and offshore jets often develop in response to Tehuano wind events. These dynamic features play crucial roles in modulating the vertical distribution of nutrients, dissolved oxygen, biogeochemical cycling, and regional primary ...
E. Lee‐Sánchez   +3 more
wiley   +1 more source

Income inequality in central Spain, 1690-1800. [PDF]

open access: yes
This paper studies the evolution of income inequality in central Spain during the late seventeenth and eighteenth centuries, taking as case study the province of Guadalajara.
Santiago-Caballero, Carlos
core   +3 more sources

Una mirada a un grupo de nombres de lugar de reciente creación en un municipio español: algunas semejanzas y diferencias con los topónimos antiguos [PDF]

open access: yes, 2017
The present work is focused on toponyms of recent creation. These new place names have generally received less attention among scholars than those with a long history, which have often generated passionate debates and academic papers ...
Gil Jacinto, F. Javier
core   +2 more sources

Frontal‐Driven Water‐Mass Transformation in a Western Boundary Current: Evidence From the Yucatan Current

open access: yesGeophysical Research Letters, Volume 53, Issue 5, 16 March 2026.
Abstract We report the recurrent formation of waters with thermohaline properties similar to Gulf Common Water (GCW) in the western Yucatan Channel, absent upstream in the Caribbean. Mooring observations and a partial submesoscale‐resolving model show that these Yucatan GCW forms locally when the Yucatan Current separates from the slope, intensifying a
Giovanni Durante   +7 more
wiley   +1 more source

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