Results 51 to 60 of about 47,725 (236)

Biosphere as semiosphere: Variations on Lotman

open access: yesSign Systems Studies, 2014
The analogy between semiosphere (world of cultures) and biosphere (world of life), coined by J. Lotman, is a courageous attempt to interconnect two seemingly incompatible worlds.
Anton Markoš
doaj   +1 more source

Temporal tracking of mineralization and transcriptional developments of shell formation during the early life history of pearl oyster Pinctada maxima [PDF]

open access: yes, 2011
Molluscan larval ontogeny is a highly conserved process comprising three principal developmental stages. A characteristic unique to each of these stages is shell design, termed prodissoconch I, prodissoconch II and dissoconch.
Elizur, Abigail   +3 more
core   +1 more source

Place of the vitality analysis in population research and nature protection work

open access: yesБіологічні студії, 2012
The basic stages of formation of the population analysis in ecology are considered. The attention to the special place and priorities of the population approach in modern exploratory and nature protection practice is paid.
G. G. Zhilyaev
doaj   +1 more source

Whole transcriptome analysis of human erythropoietic cells during ontogenesis suggests a role of VEGFA gene as modulator of fetal hemoglobin and pharmacogenomic biomarker of treatment response to hydroxyurea in β-type hemoglobinopathy patients [PDF]

open access: yes, 2017
Background: Human erythropoiesis is characterized by distinct gene expression profiles at various developmental stages. Previous studies suggest that fetal-to-adult hemoglobin switch is regulated by a complex mechanism, in which many key players still ...
Ali, Bassam R.   +11 more
core   +5 more sources

Definition of Drosophila hemocyte subsets by cell-type specific antigens. [PDF]

open access: yes, 2007
We analyzed the heterogeneity of Drosophila hemocytes on the basis of the expression of cell-type specific antigens. The antigens characterize distinct subsets which partially overlap with those defined by morphological criteria.
Andó, István   +9 more
core   +1 more source

Variability of the content of active substances during Achillea collina Rchb. Alba ontogenesis

open access: yesHorticultural Science, 2005
The fluctuation of essential oil, flavonoid and tannin content in Achillea collina Rchb. Alba (flos and herba millefolii) during ontogenesis was studied in this paper.
K. Karlová, K. Petříková
doaj   +1 more source

Social Situatedness: Vygotsky and Beyond [PDF]

open access: yes, 2002
The concept of ‘social situatedness’, i.e. the idea that the development of individual intelligence requires a social (and cultural) embedding, has recently received much attention in cognitive science and artificial intelligence research.
Lindblom, Jessica, Ziemke, Tom
core  

Enaction-Based Artificial Intelligence: Toward Coevolution with Humans in the Loop

open access: yes, 2013
This article deals with the links between the enaction paradigm and artificial intelligence. Enaction is considered a metaphor for artificial intelligence, as a number of the notions which it deals with are deemed incompatible with the phenomenal field ...
De Loor, Pierre   +2 more
core   +3 more sources

Solutions of the Haeussler-von der Malsburg Equations in Manifolds with Constant Curvatures [PDF]

open access: yes, 2007
We apply generic order parameter equations for the emergence of retinotopy between manifolds of different geometry to one- and two-dimensional Euclidean and spherical manifolds.
Guessmann, Martin   +2 more
core   +1 more source

DYNAMICS OF EXPRESSION OF CALBINDIN AND CALRETINININ THE NEURONS OF THE INTESTINE IN POSTNATAL ONTOGENESIS

open access: yesСеченовский вестник, 2017
The work was done on female Wistar rats aged 1, 10, 20, 30, 60 days, 1 and 2 years after birth (5 animals in each age group). Identification of neurons containing calbindin and calretinin, was performed using labeled antibodies.
A. F. Budnik
doaj  

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