Results 71 to 80 of about 204,416 (207)

Democracy and violence in Colombia during the Barco administration (1986-1990) [PDF]

open access: yes
With its longstanding democratic institutions and high levels of contemporary violence, Colombia represents an anomaly within Latin America. Using a contemporary historical approach, this article examines the administration of President Virgilio Barco ...
Benedict Hayes
core  

Comorbid Alzheimer's Disease and Type 2 Diabetes Microbiota Shape Age‐Associated Gut–Brain Axis Profiles

open access: yesAging Cell, Volume 25, Issue 5, May 2026.
Fecal microbiota transplantation from elderly donors with Alzheimer's disease, type 2 diabetes, or both conditions into antibiotic‐treated mice revealed that comorbid microbiota produce the most severe dysbiosis and strongest suppression of hippocampal neurotrophic gene expression.
Alessandro Atzeni   +16 more
wiley   +1 more source

Technical and radiological image quality comparison of different liquid crystal displays for radiology

open access: yesMedical Devices: Evidence and Research, 2014
Francina EM Dams,2 KY Esther Leung,1 Pieter HM van der Valk,2 Marc CJM Kock,2 Jeroen Bosman,1 Sjoerd P Niehof1 1Medical Physics and Technology, 2Department of Radiology, Albert Schweitzer Hospital, Dordrecht, The Netherlands Background: To inform cost ...
Dams FE   +5 more
doaj  

Revealing the Bioactivities of Physalia physalis Venom Using Drosophila as a Model

open access: yesToxins
Physalia physalis, commonly known as the Portuguese Man o’ War, is one of the most venomous members of the Cnidaria yet is poorly understood. This article investigates the toxicity of P.
Zuzanna Tomkielska   +7 more
doaj   +1 more source

High frequency resonant experiments in Fe$_8$ molecular clusters

open access: yes, 2000
Precise resonant experiments on Fe$_{8}$ magnetic clusters have been conducted down to 1.2 K at various tranverse magnetic fields, using a cylindrical resonator cavity with 40 different frequencies between 37 GHz and 110 GHz.
A. Garg   +27 more
core   +1 more source

Agrarian counterpoint

open access: yesAmerican Ethnologist, Volume 53, Issue 2, Page 171-182, May 2026.
Abstract In Colombia's northeastern borderlands, agrarian economies shape how disease risk and stigma are understood and managed. As shown in ethnographic fieldwork in and around the Catatumbo region, cutaneous leishmaniasis—a sandfly‐transmitted disease that produces chronic skin lesions—appears in two radically different guises across adjacent ...
Javier Lezaun, Lina Pinto‐García
wiley   +1 more source

Comment on 'Quantum Coherence between High Spin Superposition States of Single Molecule Magnet Ni4'

open access: yes, 2004
In a recent paper, cond-mat/0405331 (Ref. 1), del Barco et al. reported experimental studies on a Ni4 molecular system. They used an experimental method (combining microwave spectroscopy with high sensitivity magnetic measurements) that we have ...
Wernsdorfer, W.
core   +1 more source

Low temperature microwave emission from molecular clusters

open access: yes, 2004
We investigate the experimental detection of the electromagnetic radiation generated in the fast magnetization reversal in Mn12-acetate at low temperatures.
A García-Santiago   +15 more
core   +2 more sources

Drivers of insect herbivory resistance and tolerance to plant damage in the Brachypodium distachyon species complex

open access: yesAmerican Journal of Botany, Volume 113, Issue 4, April 2026.
Abstract Premise Insect herbivory is a major biotic factor shaping plant populations and driving the evolution of defensive traits. Polyploidy (whole‐genome duplication) often induces substantial phenotypic and genotypic changes that may affect species interactions, including herbivory.
Antonio J. Manzaneda   +4 more
wiley   +1 more source

Tuning Enzymatically Crosslinked Silk Fibroin Hydrogel Properties for the Development of a Colorectal Cancer Extravasation 3D Model on a Chip

open access: yesGlobal Challenges, 2018
Microfluidic devices are now the most promising tool to mimic in vivo like scenarios such as tumorigenesis and metastasis due to its ability to more closely mimic cell's natural microenvironment (such as 3D environment and continuous perfusion of ...
Mariana R. Carvalho   +4 more
doaj   +1 more source

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