{
  "annotation_id": "eba26ad6-0cf0-4af1-a892-b11032e63aa7",
  "date_created": "2026-03-02T18:00:43.270000Z",
  "date_modified": "2026-03-02T18:00:43.270000Z",
  "file_hash": "cb541fb95b199733604e3e93a9007bf20366d3283d6cb02b55065370a392a062",
  "private": false,
  "record": {
    "abstract": "1H RAMPS solid state NMR and 13C CP/MAS spectra of D- and L- alanine crystals\nwere measured at temperature ranging from 220K to 295K. Some major points are\nas follows: (1)alpha-H and protons in the methyl group showed a spin-spin\ncoupling effect as temperature went down in the 1H- MAS spectra of D-alanine.\n(2) In the 1H CRAMPS spectra, peak widths of alpha-H and beta-H showed a\ndifferent trend between alanine enantiomers when temperature varied.(3) The\ndynamic behavior of 13C spectra showed an obvious change around 250K, which was\nsupposed as a phase transition in alanine crystal. In the discussion section,\nwe give these experimental phenomena a possible explanation related to\nchirality.",
    "arxiv_id": "physics/0210111",
    "authors": [
      "Miao Zhang",
      "Fan Bai",
      "Wenqing Wang",
      "Zhi Liang"
    ],
    "categories": [
      "physics.bio-ph",
      "physics.chem-ph"
    ],
    "title": "Low Temperature Dependence in 1H CRAMPS \u0026 13C CP/MAS ssNMR Spectra of   Alanine Enantiomers",
    "url": "https://arxiv.org/abs/physics/0210111"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "32fa6045-539f-48a6-ae7c-310728345f30",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}