AI Article Synopsis
- The study explores how reaction-diffusion fronts move in vortex lattices using a controlled experimental setup in a Hele-Shaw cell.
- It differentiates between vortex chains (with mixed boundaries) and vortex arrays (with free boundaries) while observing their effects on front propagation.
- Results show that front velocities remain constant in vortex arrays but vary in vortex chains, challenging the understanding of front propagation behavior in low Reynolds number conditions.
Article Abstract
We experimentally address the propagation of reaction-diffusion fronts in vortex lattices by combining, in a Hele-Shaw cell and at low Reynolds number, forced electroconvective flows and an autocatalytic reaction in solution. We consider both vortex chains and vortex arrays, the former referring to mixed free/rigid boundary conditions for vortices and the latter to free boundary conditions. Varying the depth of the fluid layer, we observe no variation of the mean front velocities for vortex arrays and a noticeable variation for vortex chains. This questions the two-dimensional character of front propagation in low Reynolds number vortex lattices, as well as the mechanisms of this dependence.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1039/c6sm01547f | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
It has been shown that light speckle fluctuations provide a means for noninvasive measurements of cerebral blood flow index (CBFi). While conventional Diffuse Correlation Spectroscopy (DCS) provides marginal brain sensitivity for CBFi in adult humans, new techniques have recently emerged to improve diffuse light throughput and thus, brain sensitivity. Here we further optimize one such approach, interferometric diffusing wave spectroscopy (iDWS), with respect to number of independent channels, camera duty cycle and full well capacity, incident power, noise and artifact mitigation, and data processing.
View Article and Find Full Text PDFKidney explant cultures are traditionally carried out at air-liquid interfaces, which disrupts 3D tissue structure and limits interpretation of developmental data. To overcome this limitation, we developed a 3D culture technique using hydrogel embedding to capture morphogenesis in real time. We show that 3D culture better approximates -like niche spacing and dynamic tubule tip rearrangement, as well as -like presentation of branching defects under perturbations to glial cell-derived neurotrophic factor (GDNF)- RE arranged during T ransfection (RET) tyrosine kinase signaling.
View Article and Find Full Text PDFExcessive accumulation of auxin inhibits protocorm development during germination of Paphiopedilum spicerianum.
Plant Cell Rep
January 2025
Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, 510650, China.
Excessive auxin accumulation inhibits protocorm development during germination of Paphiopedilum spicerianum, delaying shoot meristem formation by downregulating boundary genes (CUC1, CUC2, CLV3) and promoting fungal colonization, essential for seedling establishment. Paphiopedilum, possess high horticultural and conservational value. Asymbiotic germination is a common propagation method, but high rates of protocorm developmental arrest hinder seedling establishment.
View Article and Find Full Text PDFBiomechanical Analysis and Solution Suggestions of Screw Replacement Scenarios in Femoral Neck Fracture Surgeries: Finite Element Method.
Orthop Surg
January 2025
Department of Orthopaedic and Traumatology, Trabzon Kanuni Training and Research Hospital, Trabzon, Turkey.
Objective: Despite several surgical options, there has yet to be a consensus on the best treatment for femoral neck fracture (FNF) due to higher complication rates compared to other bone fractures. This study aims to examine the possible consequences and solution suggestions of changing screws during surgery for various reasons in FNF surgical treatment from a biomechanical perspective.
Method: FNF and treatment materials were analyzed biomechanically using a package program based on the finite element method (FEM).
Transdiagnostic conceptualization of schizophrenia and autism spectrum disorder. An integrative framework of minimal self disturbance.
Neuropsychopharmacol Hung
December 2024
Pszichiátriai és Pszichoterápiás Klinika, Semmelweis Egyetem, Budapest.
Article Synopsis
- The study suggests that autism spectrum disorder and schizophrenia may share overlapping features, particularly regarding minimal self-experience, characterized by altered body ownership and agency.
- A literature review highlighted tools used to assess self-experience in both disorders, revealing that minimal self-disturbances are significant in both, though they manifest differently.
- The findings indicate that these disorders might be part of a shared psychopathological continuum, with common neural mechanisms contributing to self-disturbances across the conditions.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!