Results 21 to 30 of about 2,747 (183)

Functionalization and Characterization of New Chitosan Derivatives Obtained by 1,3-Dipolar Cycloaddition Reaction (CuAAC)

open access: yesChemistry Proceedings
Chitosan is a biopolymer with excellent properties such as biodegradability, biocompatibility, bioactivity, and non-toxicity, making it an attractive material for various applications.
Johana Gutierrez-Guzmán   +4 more
doaj   +1 more source

Presencia y resistencia antimicrobiana de Escherichia coli BLEE en muestras fecales de bovinos productores de leche al norte de Ecuador

open access: yesSiembra
La bacteria Escherichia coli causa la colibacilosis en animales de granja que actúan como reservorios de cepas patógenas. La resistencia antimicrobiana de E.
Pamela Carolina Calvopiña Montenegro   +6 more
doaj   +1 more source

Uncertainty in aquatic greenhouse gas flux estimates arises from subjective processing of floating chamber time series

open access: yesLimnology and Oceanography: Methods, EarlyView.
Abstract Accurate quantification of greenhouse gas (GHG) fluxes from aquatic systems is essential for constraining regional and global carbon budgets. Closed floating chambers are widely used to measure carbon dioxide (CO2) and methane (CH4) fluxes at the water–air interface, yet large uncertainties persist due to subjective processing of chamber time ...
Camille Minaudo   +16 more
wiley   +1 more source

Analysing Fire Propagation Models: A Case Study on FARSITE for Prolonged Wildfires

open access: yesFire
With increasing wildfire severity and duration driven by climate change, accurately predicting fire behavior over extended time frames is critical for effective management and mitigation of such wildfires.
Leonardo Martins   +3 more
doaj   +1 more source

NOSSO AMIGO, O GATO

open access: yesZero-a-seis, 2012
Experiência interdisciplinar desenvolvida com 25 alunos pré-escolares (idade entre 6 e 7 anos), de um centro de educação infantil, situado na periferia do município de Vitória – ES.
Alberto Carlos de Souza   +2 more
doaj   +1 more source

Quantifying temporal dynamics of greenhouse gas emissions in lake mesocosms: Deployment of a low‐cost measurement system

open access: yesLimnology and Oceanography: Methods, EarlyView.
Abstract Greenhouse gas (GHG) emissions from freshwater ecosystems contribute significantly to global carbon budgets, yet they remain poorly constrained due to limited high‐frequency measurements. We tested a low‐cost, high‐frequency GHG measurement system in a long‐term mesocosm experiment in Lemming, Denmark, over a 7‐month period, focusing on CO2 ...
Tuba Bucak   +6 more
wiley   +1 more source

Theoretical Study of Intermolecular Interactions in Benzopyrans Substituted with Polyhaloalkyl Groups

open access: yesChemistry Proceedings
A study of the solid-state intermolecular interactions of twenty-nine benzopyrans substituted with polyhaloalkyl groups was carried out by quantum chemical calculations using the Mercury and WinGX computer programs.
Lissette A. Haro-Saltos   +2 more
doaj   +1 more source

Data‐Independent Acquisition Mass Spectrometry in Tumor Classification and Cancer Biomarker Research

open access: yesMass Spectrometry Reviews, EarlyView.
Abstract Cancer treatment is far from optimal also because current classification systems do not reflect the complex molecular status of the tumor and its phenotype in sufficient detail. To construct molecular tumor classifiers, omics tools provide complex molecular data reflecting many aspects from genotype to phenotype.
Jan Simonik   +3 more
wiley   +1 more source

Mexican Teachers’ Cohort Cognitive Study: A pilot of home‐based assessments

open access: yesAlzheimer's &Dementia, Volume 22, Issue 6, June 2026.
Abstract INTRODUCTION Expanding research on aging and cognition in low‐ and middle‐income countries is critical, yet logistically complex. Large, established cohorts, such as the Mexican Teachers’ Cohort (MTC; >100,000 women), pose unique opportunities for neurocognitive research in Latin America.
Jocelyn Jaen   +14 more
wiley   +1 more source

Combining Artificial Intelligence and Local Ecological Knowledge to Document the Largest Ever‐Counted Cape Buffalo Mega‐Herd

open access: yesEcology and Evolution, Volume 16, Issue 6, June 2026.
Large aggregations of wild mammals are declining worldwide, yet opportunistic wildlife videos from non‐scientists can capture rare or ecologically significant events valuable to conservation. Using drone footage of a Cape buffalo megaherd in northern Botswana, we applied automated detection to estimate a total of about 4100 individuals, the largest ...
Emily Bennitt   +5 more
wiley   +1 more source

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