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October 1, 2026
HSE Researchers Show How Congenital Motor Disorders Affect Brain Development
Researchers from HSE University’s Institute for Cognitive Neuroscience have synthesised the findings of their previous studies on brain development in children with obstetric brachial plexus palsy and arthrogryposis. Their analysis shows that impaired motor function in early childhood not only limits children’s motor experience but also affects memory, categorical thinking, and information processing. The study has been published in Frontiers in Psychology.
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'We Did Not Limit the Time for Questions'
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An Approximate Method for Calculating Kinetic Coefficients of Heavy Ions in He-Containing Mixtures in a Strong Electric Field

Plasma Physics Reports. 2026. Vol. 52. No. 3. P. 367–378.
A. A. Ponomarev, N. L. Aleksandrov

An approximate method for calculating drift velocity and other kinetic coefficients of heavy ions
in a light gas is generalized to gaseous mixtures. Obtained equations are used to calculate the mobilities of
and ions, as well as rate constants for inelastic ion–molecule processes with these ions in helium with
small additions of O2 under an electric field. Calculated results are compared with the results of Monte Carlo
simulation. Simple approximate methods allow good agreement to be reached with more complicated Monte
Carlo simulation when describing the strong effect of small O2 concentrations on the ion kinetic properties
in He and to shorten computational time by orders of magnitude.

Research target: Physics
Language: English
Full text
DOI
Keywords: метод Монте-КарлоMonte Carlo methodтяжелые ионыheavy ionконстанты реакцийотлипание электронаion mobilityподвижность ионовдиссоциация молекулярных ионовrate constants of ion–molecule reactionsdissociation of molecular ionselectron detachment from negative ions
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