{
  "annotation_id": "adf38e47-963c-4769-9909-550449d4acdd",
  "date_created": "2026-03-02T18:00:42.150000Z",
  "date_modified": "2026-03-02T18:00:42.150000Z",
  "file_hash": "6683fd338c12da9a802bfdbd1f1d9c22e4b0d0fe76311747eeb8a5931a58b003",
  "private": false,
  "record": {
    "abstract": "A model to describe the arising of new structures in an initial homogeneous\nbiological system is proposed. The essay is motivated by the intention to work\non a non-equilibrium situation grouping together several mechanisms and\nprocesses as: catalytic reactions on a surface, diffusion, stimulated migration\nand selective heterogeneous reaction. A model for morphogenesis in early\nembryos is developed on two basic assumptions; (i) the existence of an\nelectrified surface that defines the shape (form) of the growing structure and\n(ii) a mechanism to select morphogens (ions or free radicals) from an initially\nhomogeneous medium. The homogeneity is broke when an electric potential arise\nbetween different parcels of the system, triggering a complex dynamic that\ndrive the development of material deposits into localized regions of the space.\nThe evolution of the deposits is described by a stochastic formalism allowing\nfor analytical expressions relating macroscopic.",
    "arxiv_id": "physics/0210120",
    "authors": [
      "P. C. T. Dajello",
      "P. R. Hauser"
    ],
    "categories": [
      "physics.bio-ph",
      "q-bio"
    ],
    "title": "Brownian motion, ionic flux, catalytic reaction and heterogeneous   nucleation in biological systems",
    "url": "https://arxiv.org/abs/physics/0210120"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "84f7fba6-d168-4173-8d11-3b66aaadbe87",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}