Results 111 to 120 of about 233,450 (266)

Pentagram Spirals

open access: yesExperimental Mathematics, 2013
We introduce a geometric construction which relates to the pentagram map much in the way that a logarithmic spiral relates to a circle. After introducing the construction, we establish some basic geometric facts about it, and speculate on some of the deeper algebraic structure, such as the complete integrability of the associated dynamical system.
openaire   +2 more sources

Hijacking emergency granulopoiesis: Neutrophil ontogeny and reprogramming in cancer

open access: yesMolecular Oncology, EarlyView.
Neutrophils are highly plastic innate immune cells; their functions in cancer extend beyond the tumour microenvironment. This Review summarises current understanding of neutrophil maturation and heterogeneity and highlights tumour‐induced granulopoiesis as a systemic programme that expands immature, immunosuppressive neutrophils via tumour‐derived ...
Gabriela Marinescu, Yi Feng
wiley   +1 more source

Spiral fracture in metallic glasses and its correlation with failure criterion

open access: yes, 2015
We report the observation of spiral fracture of the metallic glass Zr41Ti14Cu12.5Ni10Be22.5 (at.%) subjected to both shear and normal stresses. The spiral angle (that between the spiral line and the loading axis) increases as we gradually change the ...
Wei, YJ (reprint author), Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China.   +4 more
core   +1 more source

Partially coherent stable and spiral beams [PDF]

open access: yes, 2013
© 2013 Optical Society of America. The Spanish Ministerio de Economía y Competitividad is acknowledged for the financial support of the project through Grant No.
Alieva Krasheninnikova, Tatiana   +3 more
core   +1 more source

The law of cyclic evolution of the world, the reality and beingness according to the sign-images on the Malta plate, made from mammoth ivory in the times of Paleolithic Age

open access: yesВестник археологии, антропологии и этнографии, 2016
The article examines some sign-images such as a pin-point spiral of the Malta Plate using a system analysis approach. This Plate is the unique archeological artifact and was made of mammoth ivory in the times of the Paleolithic age, in an ancient human ...
Omelchenko V.V.
doaj   +1 more source

Interaction of HS1BP3 with cortactin modulates TKS5 localisation, cell secretion and cancer malignancy

open access: yesMolecular Oncology, EarlyView.
Here, we demonstrate that HS1BP3 interacts with Cortactin through a proline‐rich region (PRR3.1) and show that this interaction, and HS1BP3 itself, promote cancer cell proliferation and invasion. Inhibition of this interaction leads to build‐up of TKS5 in multivesicular endosomes and altered secretion of CD63 and CD9, providing an explanation for the ...
Arja Arnesen Løchen   +9 more
wiley   +1 more source

Novel numerical optimisation of the Hohmann Spiral Transfer

open access: yes, 2013
As the revenue of commercial spacecraft platforms is generated by its payload, of which the capacity is maximised when fuel-mass is minimised, there is great interest in ensuring the fuel required for the trajectory to deliver the satellite to its ...
Macdonald, Malcolm, Owens, Steven Robert
core  

Le futur du vieillissement de la population en Wallonie. Rapport final de l’Atelier scénario du 2 avril 2014 [PDF]

open access: yes, 2014
Ce présent document qui s’inscrit dans le cadre du projet européen PACITA, traite de la problématique du vieillissement et de la technologie en Wallonie, Belgique.
Rosskamp, Benedikt   +2 more
core  

Air stream velocity modelling in multichannel spiral cyclone separator

open access: yesJournal of Environmental Engineering and Landscape Management, 2014
Numerical modelling problem is investigated in a gas aerodynamics multichannel spiral cyclone separator with a tangential inflow. Experimental and theoretical papers analysing cyclone separator with particularly complex turbulent flow were reviewed.
Petras Vaitiekūnas   +3 more
doaj   +1 more source

Spiral transitions

open access: yesApplied Mathematics-A Journal of Chinese Universities, 2018
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Levent, Akin   +2 more
openaire   +2 more sources

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