Results 41 to 50 of about 36,908 (243)

Cerebral Blood Flow Measurement Using fMRI and PET: A Cross-Validation Study

open access: yesInternational Journal of Biomedical Imaging, 2008
An important aspect of functional magnetic resonance imaging (fMRI) is the study of brain hemodynamics, and MR arterial spin labeling (ASL) perfusion imaging has gained wide acceptance as a robust and noninvasive technique.
Jean J. Chen   +3 more
doaj   +1 more source

The Psychometric Properties of a Brief Dutch Version of the Reinforcement Sensitivity Theory of Personality Questionnaire

open access: yesPsychological Test Adaptation and Development, 2020
. Introduction: The Reinforcement Sensitivity Theory of Personality Questionnaire (RST-PQ) has its roots in the revised reinforcement sensitivity theory of personality.
Serafine Dierickx   +4 more
doaj   +1 more source

Paraquat and Diquat: Recent Updates on Their Pretreatment and Analysis Methods since 2010 in Biological Samples

open access: yesMolecules, 2023
Paraquat (PQ) and diquat (DQ) are quaternary ammonium herbicides which have been used worldwide for controlling the growth of weeds on land and in water. However, PQ and DQ are well known to be toxic. PQ is especially toxic to humans.
Honghui Guo, Ling Li, Lina Gao
doaj   +1 more source

Joule self‐heating enabled oxygen transport and coupled methane reactions in a La0.6Sr0.4Co0.2Fe0.8O3‐δ hollow fiber membrane reactor

open access: yesAIChE Journal, EarlyView.
Abstract Mixed‐conducting ceramic hollow fiber membranes are a versatile platform for oxygen separation, value‐added chemical production, and oxy‐combustion. Because oxygen permeation is thermally activated, these systems typically rely on bulky, energy‐intensive furnaces that suffer from low efficiency and large thermal inertia.
Gang Wang   +2 more
wiley   +1 more source

Structure de l’écoulement et de mélange dans un éjecteur supersonique gaz-gaz installé dans un système frigorifique d’une capacité de 10TR

open access: yesJournal of Materials and Engineering Structures, 2022
La complexité de l’écoulement dans un éjecteur nécessite une visualisation très poussée afin de décrire le comportement de l’éjecteur. Cet article repose sur une simulation de l’écoulement de R245fa dans l’éjecteur supersonique gaz-gaz installé dans un ...
malek HAMZAOUI   +2 more
doaj  

POROQUERATOSIS ACTÍNICA SUPERFICIAL DISEMINADA: REPORTE DE DOS CASOS Y REVISIÓN DE LA LITERATURA

open access: yesActas Médicas, 2020
La poroqueratosis (PQ) es una genodermatosis poco frecuente con trastornos de queratinización, considerada como una lesión preneoplásica que puede sufrir una transformación maligna en el 7-10% de casos.
Gibsy villasis marriott
doaj   +1 more source

Comparison of Pancreatic Damage in Rats for Two Methods of Paraquat Administration

open access: yesFrontiers in Pharmacology, 2021
It is noted that elevated serum amylase levels suggesting pancreatic damage has an association with prognosis in PQ patients. This study aimed to determine whether PQ can cause pancreatic damage.
Yanxia Gao   +10 more
doaj   +1 more source

Hopf algebras of dimension pq

open access: yesJournal of Algebra, 2004
minor change of version 1; manuscript of the talk at the special session of AMS meeting (#986) at New York, April ...
openaire   +3 more sources

Cell Segmentation Beyond 2D—A Review of the State‐of‐the‐Art

open access: yesAdvanced Intelligent Discovery, EarlyView.
Cell segmentation underpins many biological image analysis tasks, yet most deep learning methods remain limited to 2D despite the inherently 3D nature of cellular processes. This review surveys segmentation approaches beyond 2D, comparing 2.5D and fully 3D methods, analyzing 31 models and 32 volumetric datasets, and introducing a unified reference ...
Fabian Schmeisser   +6 more
wiley   +1 more source

Post-combustion CO2 capture retrofit from diesel-powered Arctic mines – Techno-economic and environmental assessment

open access: yesCarbon Capture Science & Technology
This study evaluates the economic feasibility and environmental impacts of retrofitting a diesel-based powerhouse in the Canadian Arctic with a post-combustion carbon capture process at an active gold mining site isolated from cheaper or cleaner ...
M.O. Landry, F. Larachi, P. González
doaj   +1 more source

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