Results 21 to 30 of about 695,293 (298)

Perianth Phyllotaxis Is Polymorphic in the Basal Eudicot Anemone and Eranthis Species

Frontiers in Ecology and Evolution, 2020
Floral organs are clade-specifically arranged to either spiral or whorled (concentric circles) phyllotaxis. The basic number (merosity) of perianth organs within a whorl is limited to three in most monocots and to four or five in most eudicots.
Miho S. Kitazawa, Miho S. Kitazawa, Koichi Fujimoto   +2 more
doaj   +1 more source

Design and Analysis of Field-of-View Independent k-Space Trajectories for Magnetic Resonance Imaging

Frontiers in Physics, 2022
This manuscript describes a method of three-dimensional k-space sampling that is based on a generalised form of the previously introduced “Seiffert Spirals,” which exploits the equality between undersampling and the reconstruction of a field of view ...
Tobias Speidel, Patrick Metze, Kilian Stumpf, Thomas Hüfken, Volker Rasche   +4 more
doaj   +1 more source

Spiraled Origins [PDF]

Molecular Cell, 2005
Recent studies have established that the eukaryotic actin-based cytoskeleton has prokaryotic origins. In addition to regulating cell shape and polarity, Gitai et al. (2005) provide convincing evidence that the Caulobacter actin homolog MreB also mediates the early segregation of the chromosomal origin, a typical functional role of the eukaryotic ...
openaire   +2 more sources

Chiral Magnetic Spirals [PDF]

Physical Review Letters, 2010
We argue that the presence of a very strong magnetic field in the chirally broken phase induces inhomogeneous expectation values, of a spiral nature along the magnetic field axis, for the currents of charge and chirality, when there is finite baryon density or an imbalance between left and right chiralities.
Basar, Gokce, Dunne, Gerald V., Kharzeev, Dmitri E.   +2 more
openaire   +3 more sources

Preparation and properties of PVA nanofibers with spiral ordered internal structure

Materials Research Express, 2023
The spinning solution of PVA(polyvinyl alcohol) was chosen as the spiral spinning research object. With enough needle length, the macromolecules were straightened and aligned under laminar flow theory.
Lei Zhao, Ting Zhu, Li Wei, Qianwen Wang, Jumei Zhao, Shixiong Yi, Jun Wang   +6 more
doaj   +1 more source

« LA SPIRALE ». Entretien [PDF]

Cultures & conflits, 2009
Preambule.- Le present entretien a ete realise a Paris, le 27 janvier 2008. Il porte sur La Spirale, un film d’Armand Mattelart, Jacqueline Meppiel et Valerie Mayoux en collaboration avec Chris Marker. Le film produit par Jacques Perrin (Reggane Films, aujourd’hui Galatee Films) compte egalement avec la participation de Jean-Claude Eloy (musique), de ...
Bigo, Didier, Mattelart, Armand
openaire   +2 more sources

Approche des relations des visiteurs à l’espace : une expérience du paysage

Projets de Paysage, 2012
Our doctoral research, which focuses on space experience of mountain hikers, rests on the premise that both landscape and tourism experience are privileged entrances to understanding human relationship with space.
Anne-Sophie Devanne
doaj   +1 more source

Simulations of the grand design galaxy M51: a case study for analysing tidally induced spiral structure [PDF]

, 2009
We present hydrodynamical models of the grand design spiral M51 (NGC 5194), and its interaction with its companion NGC 5195. Despite the simplicity of our models, our simulations capture the present day spiral structure of M51 remarkably well, and even ...
Agertz, Balbus, Bate, Bate, Bate, Bate, Benz, Bertin, Binney, Blitz, Bottema, Buta, Byrd, Byrd, C. L. Dobbs, C. Theis, Chakrabarti, Chamberlin, Corder, Cox, De Avillez, Dobbs, Dobbs, Dobbs, Dobbs, Dobbs, Dobbs, Donner, Egusa, Elmegreen, Elmegreen, Elmegreen, Elmegreen, Elmegreen, Feitzinger, Gittins, Goldreich, Goldreich, Hernquist, Hitschfeld, J. E. Pringle, Jog, Julian, Jáchym, Kendall, Kim, Koda, Kormendy, Kuijken, La Vigne, Li, Lin, Lin, M. R. Bate, Mark, Martínez-García, Meidt, Merrifield, Monaghan, Oh, Patrikeev, Patsis, Petit, Petsch, Pierce, Press, Price, Price, Price, Price, Price, Rand, Renaud, Roberts, Robertson, Romeo, Rots, Salo, Salo, Schinnerer, Sellwood, Shetty, Shetty, Shetty, Slyz, Sofue, Springel, Springel, Sundelius, Tamburro, Tasker, Tasker, Theis, Theis, Tilanus, Toomre, Toomre, Toomre, Toomre, Toomre, Tosaki, Tully, Vogel, Wada, Wada, Westpfahl, Yáñez, Zaritsky   +107 more
core   +3 more sources

Strain Effects in Twisted Spiral Antimonene

Advanced Science, 2023
Van der Waals (vdW) layered materials exhibit fruitful novel physical properties. The energy band of such materials depends strongly on their structures, and a tremendous variation in their physical properties can be deduced from a tiny change in inter ...
Ding‐Ming Huang, Xu Wu, Kai Chang, Hao Hu, Ye‐Liang Wang, H. Q. Xu, Jian‐Jun Zhang   +6 more
doaj   +1 more source

Futurizing ‘good construction(s)’: ‘Low-carbon’ and ‘labor’ futures in the Belgian construction sector

TATuP – Zeitschrift für Technikfolgenabschätzung in Theorie und Praxis
In this article, we explore through a foresight exercise how the construction sector in Belgium envisions its transition until 2050. Drawing on the notion of “the good economy” (Asdal et al.
Sarah Delvaux, Pierre Delvenne
doaj   +1 more source