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1.
  • Jelenkovic, A, et al. (författare)
  • Genetic and environmental influences on height from infancy to early adulthood: An individual-based pooled analysis of 45 twin cohorts
  • 2016
  • Ingår i: Scientific reports. - London, United Kingdom : Springer Science and Business Media LLC. - 2045-2322. ; 6, s. 28496-
  • Tidskriftsartikel (refereegranskat)abstract
    • Height variation is known to be determined by both genetic and environmental factors, but a systematic description of how their influences differ by sex, age and global regions is lacking. We conducted an individual-based pooled analysis of 45 twin cohorts from 20 countries, including 180,520 paired measurements at ages 1–19 years. The proportion of height variation explained by shared environmental factors was greatest in early childhood, but these effects remained present until early adulthood. Accordingly, the relative genetic contribution increased with age and was greatest in adolescence (up to 0.83 in boys and 0.76 in girls). Comparing geographic-cultural regions (Europe, North-America and Australia and East-Asia), genetic variance was greatest in North-America and Australia and lowest in East-Asia, but the relative proportion of genetic variation was roughly similar across these regions. Our findings provide further insights into height variation during childhood and adolescence in populations representing different ethnicities and exposed to different environments.
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2.
  • KAURISTIE, K, et al. (författare)
  • ANALYSIS OF THE SUBSTORM TRIGGER PHASE USING MULTIPLE GROUND-BASED INSTRUMENTATION
  • 1995
  • Ingår i: GEOPHYSICAL RESEARCH LETTERS. - : AMER GEOPHYSICAL UNION. - 0094-8276. ; 22:15, s. 2065-2068
  • Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
    • During the substorm trigger phase, i.e. during the last few minutes before the onset, the slowly and linearly developing growth phase features strengthen exponentially. Often the enhanced auroral activity fades abruptly during a couple of minutes just pri
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3.
  • PELLINEN, RJ, et al. (författare)
  • THE TRIGGER PHASE OF MAGNETOSPHERIC SUBSTORMS
  • 1994
  • Ingår i: GEOMAGNETIZM I AERONOMIYA. - : MEZHDUNARODNAYA KNIGA. - 0016-7940. ; 34:6, s. 1-8
  • Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
    • The last few minutes of the substorm growth phase before the auroral breakup show features distinct both from the gradual growth phase development and from the rapidly evolving expansion phase. During this time the optical auroras fade, energetic particle
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  • Resultat 1-6 av 6

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