Results 21 to 30 of about 911,002 (345)
Fragmentation des habitats et le devenir des lémuriens du Sud et du Sud-ouest de Madagascar
Revue de Primatologie, 2011 Once called "green island", Madagascar is now one of the most degraded part of the world due to all kinds of human activities. Since men arrived on the island, progressive degradation of forests became more and more alarming for the survival of lemur ...
Germain Jules Spiral +1 more
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Drawing Direction Effect on a Task’s Performance Characteristics among People with Essential Tremor
Sensors, 2021 Essential tremor (ET) is a common movement disorder affecting the performance of various daily tasks, including drawing. While spiral-drawing task characteristics have been described among patients with ET, research about the significance of the drawing ...
Navit Roth +2 more
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Physics Letters B, 2015 We propose a novel scenario of primordial inflation in which the inflaton goes through a spiral motion starting from around the top of a symmetry breaking potential. We show that, even though inflation takes place for a field value much smaller than Planck scale, it is possible to obtain relatively large tensor to scalar ratio ($r \sim 0.1$) without ...
Barenboim, Gabriela, Park, Wan-Il
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Dawes Review 4: Spiral Structures in Disc Galaxies [PDF]
, 2014 The majority of astrophysics involves the study of spiral galaxies, and stars and planets within them, but how spiral arms in galaxies form and evolve is still a fundamental problem. Major progress in this field was made primarily in the 1960s, and early
Baba, Junichi, Dobbs, Clare
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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 +2 more
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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 +4 more
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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 ...
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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 +2 more
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Electrocatalysis on Edge-Rich Spiral WS2 for Hydrogen Evolution.
ACS Nano, 2019 Transition metal dichalcogenides (TMDs) exhibit promising catalytic properties for hydrogen generation, and several approaches including defect engineering have been shown to increase the active catalytic sites.
Prasad V. Sarma +5 more
semanticscholar +1 more source
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 +6 more
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