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Spatiotemporal patterns in active four-state Potts models.
Sci Rep
January 2025
Institute for Solid State Physics, University of Tokyo, Kashiwa, Chiba, 277-8581, Japan.
Many types of spatiotemporal patterns have been observed under nonequilibrium conditions. Cycling through four or more states can provide specific dynamics, such as the spatial coexistence of multiple phases. However, transient dynamics have only been studied by previous theoretical models, since absorbing transition into a uniform phase covered by a single state occurs in the long-time limit.
View Article and Find Full Text PDFBalancing selfing and outcrossing: the genetics and cell biology of nematodes with three sexual morphs.
Genetics
November 2024
School of Life Sciences, University of Warwick, Coventry, CV4 7AL, UK.
Trioecy, a rare reproductive system where hermaphrodites, females, and males coexist, is found in certain algae, plants, and animals. Though it has evolved independently multiple times, its rarity suggests it may be an unstable or transitory evolutionary strategy. In the well-studied Caenorhabditis elegans, attempts to engineer a trioecious strain have reverted to the hermaphrodite/male system, reinforcing this view.
View Article and Find Full Text PDFA targeted gene phylogenetic framework to investigate diversification in the highly diverse yet geographically restricted red devil spiders (Araneae, Dysderidae).
Cladistics
December 2024
Departament Biologia Evolutiva, Ecologia i Ciències Ambientals, Universitat de Barcelona, Av. Diagonal 645, E-08028, Barcelona, Spain.
Article Synopsis
- * The family showcases unique biological and ecological characteristics, such as trophic specialization and adaptive radiation, yet lacks a quantitative hypothesis regarding its phylogenetic structure, limiting its research potential.
- * Recent phylogenetic analysis combining multiple genetic markers has confirmed some subfamily groupings, pointed out taxonomic discrepancies within Harpacteinae, and suggested the family originated post-Pangea, with implications for cave colonization periods.
Multiferroicity and Topology in Twisted Transition Metal Dichalcogenides.
Phys Rev Lett
July 2024
Department of Physics, University of California, Berkeley, California 94720, USA.
Van der Waals heterostructures have recently emerged as an exciting platform for investigating the effects of strong electronic correlations, including various forms of magnetic or electrical orders. Here, we perform an unbiased exact diagonalization study of the effects of interactions on topological flat bands of twisted transition metal dichalcogenides (TMDs) at odd integer fillings. For hole-filling ν_{h}=1, we find that the Chern insulator phase, expected from interaction-induced spin-valley polarization of the bare bands, is quite fragile, and gives way to spontaneous multiferroic order-coexisting ferroelectricity and ferromagnetism, in the presence of long-range Coulomb repulsion.
View Article and Find Full Text PDFCoexistence of a fluid responsive state and venous congestion signals in critically ill patients: a multicenter observational proof-of-concept study.
Crit Care
February 2024
Departamento de Medicina Intensiva, Facultad de Medicina, Pontificia Universidad Católica de Chile, Avenida Diagonal Paraguay 362, Santiago, Chile.
Background: Current recommendations support guiding fluid resuscitation through the assessment of fluid responsiveness. Recently, the concept of fluid tolerance and the prevention of venous congestion (VC) have emerged as relevant aspects to be considered to avoid potentially deleterious side effects of fluid resuscitation. However, there is paucity of data on the relationship of fluid responsiveness and VC.
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