Results 41 to 50 of about 7,139,942 (297)

Formation of Liesegang patterns [PDF]

open access: yesPhysica A: Statistical Mechanics and its Applications, 1999
It has been recently shown that precipitation bands characteristic of Liesegang patterns emerge from spinodal decomposition of reaction products in the wake of moving reaction fronts. This mechanism explains the geometric sequence of band positions x_n ~ Q(1+p)^n and, furthermore, it yields a spacing coefficient, p, that is in agreement with the ...
openaire   +2 more sources

Pattern Formation and Tropical Geometry

open access: yesFrontiers in Physics, 2020
Sandpile models exhibit fascinating pattern structures: patches, characterized by quadratic functions, and line-shaped patterns (also called solitons, webs, or linear defects).
Nikita Kalinin, Nikita Kalinin
doaj   +1 more source

OXYGEN GRADIENTS CAUSE PATTERN ORIENTATION IN DICTYOSTELIUM CELL CLUMPS [PDF]

open access: yes, 1981
We have investigated the formation of the prestalk-prespore pattern in Dictyottelium discoideum. Pattern formation occurs in clumps of Dictyostelium cells embedded in agar under a 100% oxygen atmosphere.
Sternfeld, John, David, Charles N.
core   +1 more source

Piezo1 mutant zebrafish as a model of idiopathic scoliosis

open access: yesFrontiers in Genetics
Scoliosis is a condition where the spine curves sideways, unique to humans due to their upright posture. However, the cause of this disease is not well understood because it is challenging to find a model for experimentation. This study aimed to create a
Ramli   +4 more
doaj   +1 more source

From zebrafish heart jogging genes to mouse and human orthologs: using Gene Ontology to investigate mammalian heart development. [v2; ref status: indexed, http://f1000r.es/2ys]

open access: yesF1000Research, 2014
For the majority of organs in developing vertebrate embryos, left-right asymmetry is controlled by a ciliated region; the left-right organizer node in the mouse and human, and the Kuppfer’s vesicle in the zebrafish. In the zebrafish, laterality cues from
Varsha K Khodiyar   +4 more
doaj   +1 more source

Geometrically repatterned immunological synapses uncover formation mechanisms [PDF]

open access: yes, 2006
The interaction of T cells and antigen-presenting cells is central to adaptive immunity and involves the formation of immunological synapses in many cases.
Michael Meyer-Hermann   +5 more
core   +2 more sources

From zebrafish heart jogging genes to mouse and human orthologs: using Gene Ontology to investigate mammalian heart development. [v1; ref status: indexed, http://f1000r.es/28b]

open access: yesF1000Research, 2013
For the majority of organs in developing vertebrate embryos, left-right asymmetry is controlled by a ciliated region; the left-right organizer node in the mouse and human, and the Kuppfer’s vesicle in the zebrafish. In the zebrafish, laterality cues from
Varsha K Khodiyar   +4 more
doaj   +1 more source

Nonequilibrium Relaxation and Pattern Formation [PDF]

open access: yesMoscow Mathematical Journal, 2020
This paper, dedicated to the memory of Roland Dobrushin, is devoted to the study of relaxation phenomena in a classical nonequilibrium scenario. The authors consider a collection of probes on a ring interacting with a nonequilibrium density field. The model has been shown to have a stable fixed point corresponding to a crystal pattern, in which probes ...
Maes, Christian, Netocny, Karel
openaire   +2 more sources

Patterning, From Conifers to Consciousness: Turing’s Theory and Order From Fluctuations

open access: yesFrontiers in Cell and Developmental Biology, 2022
This is a brief account of Turing’s ideas on biological pattern and the events that led to their wider acceptance by biologists as a valid way to investigate developmental pattern, and of the value of theory more generally in biology.
Thurston C. Lacalli
doaj   +1 more source

Spacecraft formation flying using bifurcating potential fields [PDF]

open access: yes, 2008
The distributed control of spacecraft flying in formation has been shown to have advantages over conventional single spacecraft systems. These include scalability, flexibility and robustness to failures.
Bennet, Derek, McInnes, Colin R.
core   +3 more sources

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