A5034034526- Ecosystem dynamics and resilience
- Microtubule and mitosis dynamics
- Nonlinear Dynamics and Pattern Formation
- stochastic dynamics and bifurcation
- Nuclear physics research studies
- Ecology and Vegetation Dynamics Studies
- Nuclear Physics and Applications
- Marine and coastal plant biology
- Biocrusts and Microbial Ecology
- Gene Regulatory Network Analysis
- Earth Systems and Cosmic Evolution
- Quantum chaos and dynamical systems
- Topological Materials and Phenomena
- Quantum Chromodynamics and Particle Interactions
- Plant Molecular Biology Research
- Particle physics theoretical and experimental studies
- Graphene research and applications
- Slime Mold and Myxomycetes Research
- X-ray Spectroscopy and Fluorescence Analysis
- Evolution and Genetic Dynamics
- Cancer-related Molecular Pathways
- Sustainability and Ecological Systems Analysis
- Particle accelerators and beam dynamics
- High-Energy Particle Collisions Research
- Advanced Fluorescence Microscopy Techniques
KU Leuven
2022-2024
Institute for Cross-Disciplinary Physics and Complex Systems
2014-2024
Instituto de Estructura de la Materia
2023-2024
Aarhus University
2024
Consejo Superior de Investigaciones Científicas
2017-2023
Universitat de les Illes Balears
2015-2023
Universidad Complutense de Madrid
2023
Institut de Ciència de Materials de Barcelona
2003
Institute of Nanostructured Materials
2003
Short-scale interactions yield large-scale vegetation patterns that, in turn, shape ecosystem function across landscapes. Fairy circles, which are circular patches bare of within otherwise continuous landscapes, characteristic features semiarid grasslands. We report the occurrence submarine fairy circle seascapes seagrass meadows and propose a simple model that reproduces diversity observed these ecosystems as emerging from plant meadow. These include two extreme cases, meadow landscape,...
Controlling materials on multiple length scales is one of the most compelling issues in nanotechnology research today. Here we demonstrate that arrays nanometer-sized aggregates, each made a few hundred single-molecule magnets derived from Mn12 complexes, can be patterned large areas by self-organization assisted stamps surface dewetting regime. The scale imposed motif stamp protrusions, and smaller scales, viz., size distance molecular are controlled deposition growth phenomena occurring...
Seagrasses provide multiple ecosystem services and act as intense carbon sinks in coastal regions around the globe but are threatened by anthropogenic pressures, leading to enhanced seagrass mortality that reflects spatial self-organization of meadows. Spontaneous vegetation patterns appear such different ecosystems drylands, peatlands, salt marshes, or meadows, mechanisms behind this phenomenon still an open question many cases. Here, we report on formation traveling pulses creating complex...
ABSTRACT Cyclin-dependent kinase 1 (Cdk1) activity rises and falls throughout the cell cycle, a cell-autonomous process known as mitotic oscillations. These oscillators can synchronize when spatially coupled, providing crucial foundation for rapid synchronous divisions in large early embryos like Drosophila ( ∼ 0.5 mm) Xenopus 1.2 mm). While diffusion alone cannot achieve such long-range coordination, recent studies have proposed two types of waves, phase trigger to explain phenomena. How...
Regular transitions between interphase and mitosis during the cell cycle are driven by changes in activity of enzymatic protein complex cyclin B with cyclin-dependent kinase 1 (Cdk1). At most basic level, this oscillator is negative feedback: active B-Cdk1 activates anaphase-promoting complex/cyclosome, which triggers degradation B. Such oscillations occur fast periodically early embryos frog
11 Li is the best example of a two-neutron (2n) halo nucleus, system where last nucleons, due to low binding energy and angular momentum, spend large part their time far from core. Despite extensive experimental efforts, its excited structure remains topic debate. Experiment IS690 employs novel approach investigate states Li, directly populating these via (t,p) reaction less exotic 9 nucleus. In this contribution setup preliminar results are summarised.
We investigate the effects that a tilting of magnetic field from parallel direction has on states one-dimensional Majorana nanowire. Particularly, we focus conditions for existence zero modes, uncovering an analytical relation (the projection rule) between orientation relative to wire, its magnitude, and superconducting parameter material. The study is then extended junctions nanowires, treated as magnetically inhomogeneous straight nanowires composed two homogeneous arms. It shown their...
Each proliferating cell replicates its DNA and internal components before distributing this material evenly to daughters. Although the regulation of cyclin-dependent kinases (Cdks) that dictate orderly cycle progression is well characterized, how subcellular localization machinery contributes timing not understood. We investigated influence nucleus by reconstituting oscillations in droplets frog egg extract absence or presence a nuclear compartment monitoring dynamics time-lapse microscopy....
We study the scenario in which traveling pulses emerge a prototypical type-I one-dimensional excitable medium, exhibits two different routes to behavior, mediated by homoclinic (saddle-loop) and saddle-node on invariant cycle bifurcations. characterize region parameter space are stable together with bifurcations behind either their destruction or loss of stability. In particular, some delimiting stability have been connected, using singular limits, scenarios that local excitability. Finally,...
Cyclin-dependent kinase 1 (Cdk1) activity rises and falls throughout the cell cycle: a cell-autonomous process called mitotic oscillations. Mitotic oscillators can synchronize when spatially coupled, facilitating rapid, synchronous divisions in large early embryos of Drosophila (~0.5 mm) Xenopus (~1.2 mm). Diffusion alone cannot achieve such long-range coordination. Instead, studies proposed waves—phase trigger waves—as mechanisms How waves establish over time remains unclear. Using laevis...
The authors propose a general equation describing the formation of vegetation patterns that incorporates all main clonal-growth mechanisms as well essential ingredients leading to spatial self-organization.
Clonal growth plants are abundant in both terrestrial and marine ecosystems. Some species particularly important since they provide essential ecosystem services the shores of all continents except Antarctica. For appropriate modelization clonal discretization direction angle has to be carefully treated correctly describe dynamics meadow. Specifically, determining minimum number directions is maximize efficiency numerical simulations. We show that presence neutral modes tends make...
We calculate the cross section for optical absorption of planar 2D Majorana nanowires. Light is described in dipole approximation. discuss signatures on a near-zero-energy mode. A low energy peak transverse polarization, absent longitudinal one, reveals presence Majorana-like state. This relatively robust against thermal smearing level occupations. consider influence masks hiding parts nanowire from light.
The FitzHugh-Nagumo equation, originally conceived in neuroscience during the 1960s, became a key model providing simplified view of excitable neuron cell behavior. Its applicability, however, extends beyond into fields like cardiac physiology, division, population dynamics, electronics, and other natural phenomena. In this review spanning six decades research, we discuss diverse spatio-temporal dynamical behaviors described by equation. These include dynamics bistability, oscillations,...
The 2 + doublet in 8 Be is a well-known example of nearly equal isospin mixing between two states.However, the degree has not been experimentally determined as studies reaction feeding to do distinguish easily, and β /EC rate very low.The IS633 experiment first beta decay study resolve thanks high statistics and, therefore, gives chance determine through Gamow-Teller Fermi population these states.Two approaches have followed: an R-matrix analysis recoil study.Preliminary results are...
The hypernuclei, which are nuclei that contain the quark s, have been studied for more than 50 years. Notwithstanding, recent experiments using high-energy heavy-ion induced reactions challenged their current understanding. high multiplicity of particles generated in reaction allows measurement interaction point primary beam with target. Then, a micro-vertex detection system WASA-FRS Experiments has developed. Several experimental tests performed 90Sr and 207Bi β sources 10-MeV proton at...
Spiral waves are a well-known phenomenon in excitable media, playing critical roles biological systems such as cardiac tissues, where they involved arrhythmias, and slime molds, guide collective cell migration. However, their presence the cytoplasm of cells has not been reported to date. In this study, we present observation spiral Xenopus laevis frog egg extract reconstituting periodic cycle transitions. We find that emergence these accelerates division nearly twofold. Using two distinct...
Regular transitions between interphase and mitosis during the cell cycle are driven by changes in activity of enzymatic protein complex cyclin B with cyclin-dependent kinase 1 (Cdk1). At most basic level, this oscillator is negative feedback: active Cdk1 activates Anaphase-Promoting Complex - Cyclosome, which triggers degradation B. Such oscillations occur fast periodically early embryos frog Xenopus laevis , where several positive feedback loops leading to bistable switches parts regulatory...
Microtubules self-organize to structure part of the cellular cytoskeleton. As such they give cells their shape and play a crucial role in cell division intracellular transport. Past studies have identified diverse spatio-temporal patterns into which microtubules can organize when driven by motor proteins. The question remains if there is an appropriate way quantify these structures gain new knowledge about physical principles self-organization microtubule-motor mixtures. Here, we aim...
The 12 C (α, y) 16 O reaction is important in the production of universal , but its cross-section at relevant energies static helium burning complex and uncertain. total originates from a sum resonance tails direct captures, making contributions sub-threshold states difficult to estimate. One proposed method estimate these involves determining reduced α-widths through indirect measurements. Therefore, 19 F ( p α y ) was used populate α-unbound using 2.6 MeV proton beam on CaF 2 target. A...
The 11 Li nucleus is considered the best example of a two-neutron halo nucleus. While structure ground state well established there still significant debate regarding its excited states despite multiple experiments realised mainly from excitation that rather complex. We propose novel approach, to directly feed different by (t,p) reaction as 9 has simpler structure. will employ beam produced at ISOLDE and post-accelerated HIE-ISOLDE energies 7 MeV/u impinge on 3 H-target located upgraded SEC...