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First 647 results for ” Geffen”

1. Observations of Lightning NOx Production From Tropospheric Monitoring Instrument Case Studies Over the United States

   Nitrogen oxides produced by lightning (LNOx) play an important role in determining mid- and upper...

   Allen, D., Pickering, K. E., Bucsela, E., Van Geffen, J., Lapierre, J., Koshak, W., & Eskes, H. | Status: published | Journal: Journal of Geophysical Research: Atmospheres | Volume: 126 | Year: 2021 | First page: e2020JD034174 | doi: 10.1029/2020JD034174

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2. Comprehensive Analysis of Seasonal and Geographical Variation in UVB Radiation Relevant for Vitamin D Production in Europe

   Dermal synthesis, following sun exposure, is the main source of vitamin D. This study characteriz...

   Khanna T, Shraim R, Zarkovic M, van Weele M, van Geffen J, Zgaga L. | Journal: Nutrients | Volume: 14 | Year: 2022 | First page: 5189 | Last page: 5204 | doi: 10.3390/nu14235189

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3. Ambient ultraviolet-B radiation, supplements and other factors interact to impact vitamin D status differently depending on ethnicity: a cross-sectional study

   Background & aims Many determinants of vitamin D status have been well-described, yet supple...

   Brennan, M.M., van Geffen, J., van Weele, M., Zgaga, L. and Shraim | Journal: Clinical Nutrition | Volume: 43 | Year: 2024 | First page: 1308 | Last page: 1317 | doi: 10.1016/j.clnu.2024.04.006

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4. The Antarctic stratospheric nitrogen hole: Southern Hemisphere and Antarctic springtime total nitrogen dioxide and total ozone variability as observed by Sentinel-5p TROPOMI

   Denitrification within the stratospheric vortex is a crucial process for Antarctic ozone hole for...

   A.T.J. de Laat, J. van Geffen, P. Stammes, H. Eskes, R.J. van der A | Journal: Atmospheric Chemistry and Physics | Volume: 24 | Year: 2024 | First page: 4511 | Last page: 4535 | doi: https://doi.org/10.5194/acp-24-4511-2024

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5. Prevalence and determinants of profound vitamin D deficiency (25-hydroxyvitamin D <10 nmol/L) in the UK Biobank and potential implications for disease association studies

   Background 25-hydroxyvitamin D (25OHD) is the principal biomarker of vitamin D status. Values be...

   Shraim, R., Brennan, M.M., van Geffen, J. and Zgaga, L. | Journal: Journal of Steroid Biochemistry and Molecular Biology | Volume: 250 | Year: 2025 | First page: 106737 | doi: 10.1016/j.jsbmb.2025.106737

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