SAR Estimations in a Child Due to RF Exposures from Several Laptops in a Classroom Environment

Abstract

SAR Estimations in a Child Due to RF Exposures from Several Laptops in a Classroom Environment Soares NE, Bulla G, Fernandez-Rodriguez CE, de Salles AAA. SAR Estimations in a Child Due to RF Exposures from Several Laptops in a Classroom Environment. 2023 IEEE MTT-S Latin America Microwave Conference (LAMC), San José, Costa Rica, 2023, pp. 58-60, doi: 10.1109/LAMC59011.2023.10375589. Abstract This research provides a detailed examination of the exposure to electromagnetic fields (EMF) in a classroom environment. The study is driven by the escalating integration of electronic devices in educational settings and the subsequent necessity to estimate the implications of this on the overall exposure. The employed methodology simulates a classroom filled with several 7-year-old girls realistic models, each using a laptop, which are the primary sources of electromagnetic radiation. The 1g and 10g peak spatial Specific Absorption Rate (psSAR) are calculated for various parts of the child model, including the head, back, and hands. It is observed that, when several laptops are used, the psSAR can be substantially increased (e.g. up to 40-fold). One objective of this study is to enhance the understanding of potential EMF exposure effects in relation to age and to provide guidelines for the design of safer classrooms in the context of widespread laptop usage. ieeexplore.ieee.org

AI evidence extraction

Main findings

Using simulations of a classroom with multiple laptops, the study calculated 1g and 10g peak spatial SAR in child models (head, back, hands). It reports that when several laptops are used, psSAR can be substantially increased (e.g., up to 40-fold).

Outcomes measured

• 1g peak spatial Specific Absorption Rate (psSAR)
• 10g peak spatial Specific Absorption Rate (psSAR)

Limitations

• Simulation/modeling study (no real-world measurements reported in abstract)
• Exposure parameters such as operating frequency and absolute SAR values are not provided in the abstract
• Sample size/number of modeled children and laptops not specified in the abstract

Suggested hubs

• school-wi-fi (0.62)
  Classroom environment and laptop-related RF exposure assessment in children.

{
    "study_type": "exposure_assessment",
    "exposure": {
        "band": "RF",
        "source": "laptop",
        "frequency_mhz": null,
        "sar_wkg": null,
        "duration": null
    },
    "population": "Simulated classroom with realistic models of 7-year-old girls",
    "sample_size": null,
    "outcomes": [
        "1g peak spatial Specific Absorption Rate (psSAR)",
        "10g peak spatial Specific Absorption Rate (psSAR)"
    ],
    "main_findings": "Using simulations of a classroom with multiple laptops, the study calculated 1g and 10g peak spatial SAR in child models (head, back, hands). It reports that when several laptops are used, psSAR can be substantially increased (e.g., up to 40-fold).",
    "effect_direction": "unclear",
    "limitations": [
        "Simulation/modeling study (no real-world measurements reported in abstract)",
        "Exposure parameters such as operating frequency and absolute SAR values are not provided in the abstract",
        "Sample size/number of modeled children and laptops not specified in the abstract"
    ],
    "evidence_strength": "insufficient",
    "confidence": 0.7399999999999999911182158029987476766109466552734375,
    "peer_reviewed_likely": "unknown",
    "keywords": [
        "RF exposure",
        "classroom",
        "laptops",
        "children",
        "specific absorption rate",
        "psSAR",
        "1g SAR",
        "10g SAR",
        "simulation"
    ],
    "suggested_hubs": [
        {
            "slug": "school-wi-fi",
            "weight": 0.61999999999999999555910790149937383830547332763671875,
            "reason": "Classroom environment and laptop-related RF exposure assessment in children."
        }
    ]
}

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