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On the modulation effect of pulsing and static magnetic fields and mechanical vibrations on barley seed hydration.

Physiological chemistry and physics and medical NMR · 2004 · Mixed · Very low evidence

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MixedVery low evidencePaper 3668

Barley seed wet and dry weight changes during swelling were studied after treatment involving ELF electromagnetic fields, static magnetic fields, or mechanical vibrations applied to distilled water, compared with non-treated controls. The abstract reports tha…

Study snapshot

PublicationPhysiological chemistry and physics and medical NMR · 2004
Study typeother
Reported directionMixed
Evidence ratingVery low

Abstract

The changes of wet and dry weights of barley seed in different periods of swelling were studied in seeds treated with Extremely Low Frequency Electromagnetic Fields (ELF EMF), Static Magnetic Fields (SMF) and Mechanical Vibrations (MV) in cold (4 degrees C) and warm (20 degrees C) distilled water as well as in seeds non-treated (control). The metabolic dependent seed hydration, dry weight loss and water binding in seed were modulated by preliminary EMF, SMF and MV-induced treatment of distilled water. The specific electrical conductivity (SEC) of control and treated distilled water was measured before the seed incubation. Frequency and intensity "windows" (i.e. range of frequency or intensity) for the effect of EMF, MV and SMF (correspondingly) on seed hydration, solubility and water binding in seed were studied. These "windows" were different in various phases of seed swelling. It is suggested that water structure modification is the result of valence angle changes (SMF and EMF) and dipole molecules vibration (EMF and MV) has different effects on the process of hydration, solubility and water binding in seed. These results are important from the point of understanding the mechanisms of the biological effect of EMF, as well as from the point of agriculture.

Machine Enhanced Logic

AI evidence extraction

Structured fields below were generated from the paper’s abstract and metadata to make the evidence easier to inspect. Automated extraction may be incomplete or incorrect; verify important details against the original paper.

Study typeother
Effect directionmixed
Populationbarley seed
Sample sizeNot supplied
ExposureELF
Evidence strengthVery lowConfidence: 66% · Peer reviewed: yes

Main findings

Barley seed wet and dry weight changes during swelling were studied after treatment involving ELF electromagnetic fields, static magnetic fields, or mechanical vibrations applied to distilled water, compared with non-treated controls. The abstract reports that seed hydration, dry weight loss, and water binding were modulated by the preliminary EMF/SMF/MV treatment of distilled water, and that frequency/intensity “windows” for effects differed across phases of seed swelling.

Outcomes measured

  • wet weight changes during swelling
  • dry weight changes/dry weight loss
  • metabolic-dependent seed hydration
  • water binding in seed
  • seed solubility
  • specific electrical conductivity (SEC) of distilled water

Limitations

  • Sample size not reported in abstract.
  • Exposure parameters (exact frequencies, intensities, durations) not specified in abstract.
  • Outcomes and results are described qualitatively; no quantitative effect sizes or statistical details provided.
  • Mechanistic interpretation is suggested but not directly demonstrated in the abstract.
View raw extracted JSON
{
  "study_type": "other",
  "exposure": {
    "band": "ELF",
    "source": "other",
    "frequency_mhz": null,
    "sar_wkg": null,
    "duration": null
  },
  "population": "barley seed",
  "sample_size": null,
  "outcomes": [
    "wet weight changes during swelling",
    "dry weight changes/dry weight loss",
    "metabolic-dependent seed hydration",
    "water binding in seed",
    "seed solubility",
    "specific electrical conductivity (SEC) of distilled water"
  ],
  "main_findings": "Barley seed wet and dry weight changes during swelling were studied after treatment involving ELF electromagnetic fields, static magnetic fields, or mechanical vibrations applied to distilled water, compared with non-treated controls. The abstract reports that seed hydration, dry weight loss, and water binding were modulated by the preliminary EMF/SMF/MV treatment of distilled water, and that frequency/intensity “windows” for effects differed across phases of seed swelling.",
  "effect_direction": "mixed",
  "limitations": [
    "Sample size not reported in abstract.",
    "Exposure parameters (exact frequencies, intensities, durations) not specified in abstract.",
    "Outcomes and results are described qualitatively; no quantitative effect sizes or statistical details provided.",
    "Mechanistic interpretation is suggested but not directly demonstrated in the abstract."
  ],
  "evidence_strength": "very_low",
  "confidence": 0.66,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "barley seed",
    "hydration",
    "swelling",
    "ELF EMF",
    "static magnetic field",
    "mechanical vibrations",
    "distilled water",
    "specific electrical conductivity",
    "frequency window",
    "intensity window",
    "water binding"
  ],
  "suggested_hubs": []
}
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AI-extracted fields are generated from the abstract and metadata and may be incomplete or incorrect. This material is for informational purposes and is not medical advice.

Identifiers and source

DOI: Not supplied
PubMed: 15789974

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