Results 31 to 40 of about 15,135 (156)

Mental Development in Early Childhood

open access: yesКультурно-историческая психология, 2020
This is the first English translation of the paper of the prominent Soviet scholar Alexey Nikolaevich Leontiev (1903—1979) published in 1948. The paper introduces the author’s ideas on mental and personality development in preschool children based on the
Leontiev A.N.
doaj   +1 more source

Global security and ecology

open access: yesGeofísica Internacional, 1990
Se presentan algunas consideraciones nuevas sobre seguridad global y en particular sobre su componente ecológica. Estas consideraciones se basan en una reciente resolución del Instituto Internacional de Aná1isis Aplicado de Sistemas. doi: https://doi.org/
K. Ya. Kondratyev
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Investigació biomorfològica comparativa dels gèneres Consolida (DC.) S.F. Gray i Aconitella Spach en relació amb llur taxonomia i filogènia

open access: yesCollectanea Botanica, 1990
[ca] Les relacions filogenètiques a l'interior del gènere Consolida i entre els gèneres Consolida i Aconitella han estat posades de manifest com a resultat de la comparació de dades anatòmiques, cariològiques i morfològiques.
V. I. Trifinova
doaj   +1 more source

Thermographic investigation of ultrasonically induced temperature distribution in tissues and tissue-equivalent phantoms

open access: yesArchives of Acoustics, 2015
The purpose of the paper was to develop a computerised thermographic method for the investigation of the temperature fields in tissue phantoms irradiated by ultrasound and to study heating patterns in sonicated heterogeneous and homogeneous phantoms. The
T. PASHOVKIN, E. KHIZNYAK, A. SARVAZYAN
doaj  

Peculiarities of the solar wind interaction with the upper atmospheres of Venus and Mars

open access: yesGeofísica Internacional, 1980
Mediciones de plasma y de campos magnéticos en Venus y Marte así como observaciones de radio ocultamiento de satélites por sus atmósferas y ionosferas superiores revelan algunas diferencias y semejanzas en la configuración del flujo del viento solar ...
T. K. Breus
doaj   +1 more source

Formulation of the theory of perturbations for complicated models. Part II: weather prediction.

open access: yesGeofísica Internacional, 1975
En este artículo se presenta la aplicación de funciones conjugadas y teoría de perturbaciones al problema de predicción del tiempo.
G. I. Marchuk
doaj   +1 more source

USSR [PDF]

open access: yesMarine Pollution Bulletin, 1977
DEREK BARTON, BRIAN SPALDING
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Further observations on the activity of Y chromosome heterochromatin in Rumex thyrsiflorus

open access: yesActa Societatis Botanicorum Poloniae, 2015
Observation of premeiotic nuclei of plants containing different numbers (from one to five) of Y chromosomes reveal that is such plants prior to meiosis all Y chromosomes are in fuzzy state, while in nuclei of tapetal cells or nuclei from anther stalk the
J. Żuk, Z. Bolkhovskikh
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The action of therapeutic ultrasound on the catalytic activity of the dissociating enzymes

open access: yesArchives of Acoustics, 2015
The action of low intensity therapeutic ultrasound (0.88 MHz; 0.05 – 1.0 W/cm^2) on the activity and dissociation of the enzymes with labile quarternary structure was investigated (creatine kinase – CS, pyruvate kinase – PK, hexokinase HK and urease). It
N. A. ROZANOVA, E. P. CHETVERIKOWA
doaj  

Formulation of the theory of perturbations for complicated models. Part1: the estimation of the climate change

open access: yesGeofísica Internacional, 1975
En este artículo se presenta la construcción de la teoría de las perturbaciones y la formulación de problemas inversos con la finalidad de identificar sus parámetros importantes.
G. I. Marchuk
doaj   +1 more source

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