Publications by authors named "J Naarala"

Although static magnetic fields (SMFs) have been reported to induce only minimal biological effects, it has been proposed that they may alter the effects of other agents, such as ionizing radiation. We sham-exposed or exposed human SH-SY5Y neuroblastoma cells to 0.5-, 1.

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Objectives: Studies assessing the association of adult cancers with extremely low frequency (ELF) magnetic fields (MF) have provided inconclusive results, probably affected by limitations such as low exposure levels, confounding and various forms of bias. This study investigated the association between residential ELF MF exposure and adult cancer using a design that avoids the main limitations of previous studies.

Methods: Persons who have lived in buildings with indoor transformer stations during the period 1971-2016 formed the study cohort.

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Article Synopsis
  • Sediments in aquatic environments are significant for retaining metals and radionuclides, influencing their transfer to aquatic organisms.
  • The study analyzed the seasonal distribution of specific metals (Ba, Co, Ni, Sr, U) in sediments, water, and benthic organisms near uranium mines in Eastern Finland, finding minimal seasonal changes and high metal association with sediments.
  • An in situ bioaccumulation experiment revealed that sediments are crucial for the uptake of these metals by organisms, demonstrating significant differences in metal concentrations between contaminated and reference sediment, highlighting the stable metal distribution in deeper waters during the monitoring period.
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Purpose: Earlier evidence suggests that extremely low frequency magnetic fields (ELF MFs) can modify the effects of carcinogenic agents. However, the studies conducted so far with ionizing radiation as the co-exposure agent are sparse and have provided inconclusive results. We investigated whether 50 Hz MFs alone, or in combination with ionizing radiation alter cell biological variables relevant to cancer and the biological effects of ionizing radiation.

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The high radon concentrations measured in the indoor air of groundwater facilities and the prevalence of the problem have been known for several years. Unlike in other workplaces, in groundwater plants, radon is released into the air from the water treatment processes. During the measurements of this study, the average radon concentrations varied from 500 to 8800 Bq m.

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