Results 31 to 40 of about 12,715 (120)

Synthetic pelagic biomass size spectra of the tropical and subtropical Atlantic

open access: yesEcosphere, Volume 17, Issue 5, May 2026.
Abstract Synthetic normalized biomass size spectra (NBSS) comprising non‐synoptically sampled phytoplankton, meso‐ and macrozooplankton, and micronekton including mesopelagic fishes were explored to analyze pelagic community structure in seven regions of the tropical and the subtropical Atlantic representative of different water bodies (NE Brazil shelf,
Heino O. Fock   +25 more
wiley   +1 more source

Global Model Estimates of Atmospheric Al, Ca, Fe, Si, and Ti From Dust and Non‐Dust Aerosols Informed by EMIT Surface Mineralogy and Evaluated Against Observations

open access: yesGlobal Biogeochemical Cycles, Volume 40, Issue 5, May 2026.
Abstract Atmospheric deposition of micro‐nutrients like Fe has been shown to be important for ocean biogeochemistry. The largest source of atmospheric Fe and other elements (e.g., Ca, Al, Si, and Ti) is desert dust, although there are significant non‐dust sources in some regions (e.g., combustion, sea salts, volcanoes). However, past estimates of these
Natalie M. Mahowald   +61 more
wiley   +1 more source

fastbioclim: An R package for creating custom‐time bioclimatic and derived environmental summary variables

open access: yesMethods in Ecology and Evolution, Volume 17, Issue 5, Page 1585-1594, May 2026.
Abstract Bioclimatic variables, widely used in ecological and biogeographical studies, are typically derived from 30‐year averages of monthly data (e.g. 1971–2000). Unfortunately, the use of these long‐term averaged variables often creates a temporal mismatch with the observational data collected, which potentially undermines how environmental ...
Gonzalo E. Pinilla‐Buitrago   +1 more
wiley   +1 more source

The Penchant for Technology in Non‐Democratic Elections: Evidence From Hong Kong's Digital Authoritarianism

open access: yesAsian Politics &Policy, Volume 18, Issue 2, April 2026.
ABSTRACT To complement the emergent inquiry into the threats and opportunities that new technologies pose to political institutions and behavior, this study draws on the emergent scholarly literature on Digital Authoritarianism to shed light on the factors leading to Hong Kong's newly acquired penchant for adopting the digital and information ...
Kenneth Ka‐Lok Chan
wiley   +1 more source

Plane Wave Imaging with Large-Scale 2D Sparse Arrays: A Method for Near-Field Enhancement via Aperture Diversity

open access: yesApplied Sciences
In the context of a medical imaging application for preclinical research, specifically cerebrovascular imaging in small animals, this work addresses the challenges associated with using a large-scale 2D ultrasonic array comprising 32×32 elements (96λ×96λ
Óscar Martínez-Graullera   +5 more
doaj   +1 more source

Ferroelectret Ultrasonic Transducers for Pulse-Echo Water Immersion

open access: yesApplied Sciences, 2020
Ferroelectrets are thin and porous polymeric films with a cellular microstructure, high porosity, permanent polarization and piezoelectric response.
Julio Quirce   +3 more
doaj   +1 more source

Sulfur‐Rich μ‐O Diiron Catalyst for Electrochemical Hydrogen Production

open access: yesEuropean Journal of Inorganic Chemistry, Volume 29, Issue 8, 10 March 2026.
A diferric μ‐oxido complex supported by a sulfur‐rich scaffold acts as a proton‐reduction electrocatalyst for H2 production via a μ‐hydroxido species. An aminodithiophenolate scaffold with an NS2 donor set supports diiron complex formation. The diferrous precursor activates O2, giving rise to a diferric μ‐oxido species, which acts as a proton‐reduction
Hugo C. Hernández‐Toledo   +7 more
wiley   +1 more source

Assessing contributions of deterministic versus stochastic processes to local species assembly: A field experiment with annual plant‐dominated communities in gypsum systems

open access: yesJournal of Ecology, Volume 114, Issue 3, March 2026.
In this study, we experimentally show that stochasticity can play prominent roles in driving local species assembly in annual plant‐dominated communities of semiarid gypsum ecosystems. Drylands are traditionally viewed as restrictive environments that impose strong deterministic filtering effects, but neutral events can also contribute decisively to ...
Laura Ortiz   +3 more
wiley   +1 more source

DEVICE FOR PERFORMING STEREOTAXIC SURGERY ON THE HAND

open access: yesIBRO Neuroscience Reports, 2023
Xochitl Citlalli Jiménez-Román   +4 more
doaj   +1 more source

The Exact Euclidean Distance Transform: A New Algorithm for Universal Path Planning

open access: yesInternational Journal of Advanced Robotic Systems, 2013
The Path-Planning problem is a basic issue in mobile robotics, in order to allow the robots to solve more complex tasks, for example, an exploration assignment in which the distance given by the planner is taken as a utility measure.
Juan Carlos Elizondo-Leal   +2 more
doaj   +1 more source

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