Results 71 to 80 of about 4,520,879 (281)

Tuber pulchrosporum sp. nov., a black truffle of the Aestivum clade (Tuberaceae, Pezizales) from the Balkan peninsula [PDF]

open access: yesMycoKeys, 2019
Knowledge on the diversity of hypogeous sequestrate ascomycetes is still limited in the Balkan Peninsula. A new species of truffle, Tuber pulchrosporum, is described from Greece and Bulgaria.
Elias Polemis   +8 more
doaj   +3 more sources

Unconventional building forms roofed with innovative structures arranged on regular surfaces with the negative Gaussian curvature

open access: yesBudownictwo i Architektura, 2023
A novel method for shaping innovative building forms, roofed with diversified complex continuous and discontinuous folded structures composed of many transformed corrugated shell units, is presented in the paper.
Jacek Abramczyk, Katarzyna Chrzanowska
doaj   +1 more source

Origami‐Inspired Structural Design for Aquatic‐Terrestrial Amphibious Robots

open access: yesAdvanced Robotics Research, EarlyView.
This work presents a lightweight amphibious origami robot actuated by a single shape memory alloy wire. A rigid foldable origami structure with displacement amplification enables efficient terrestrial crawling and aquatic swimming. The addition of fan‐shaped units allows controllable turning in both environments.
Weiqi Liu   +5 more
wiley   +1 more source

Polyhedral Oligomeric Silsesquioxane (POSS)-Containing Polymer Nanocomposites

open access: yesNanomaterials, 2012
Hybrid materials with superior structural and functional properties can be obtained by incorporating nanofillers into polymer matrices. Polyhedral oligomeric silsesquioxane (POSS) nanoparticles have attracted much attention recently due to their ...
Biswajit Sarkar   +2 more
doaj   +1 more source

Nonreciprocal Swarmalators With Reconfigurable and Controllable Formations for Robot Collectives

open access: yesAdvanced Robotics Research, EarlyView.
Nonreciprocal swarmalator interactions are enabled through control barrier functions to transform self‐organizing robot collectives into reconfigurable, constraint‐aware systems. Complex two‐ and three‐dimensional shapes, continuous morphing, obstacle‐aware navigation, collective splitting, and object transport emerge from modulating agent‐level ...
Kush Patel   +3 more
wiley   +1 more source

Discrete Differential Operators for Computer Graphics [PDF]

open access: yes, 2004
This thesis presents a family of discrete differential operators. Since these operators are derived taking into account the continuous notions of differential geometry, they possess many similar properties.
Meyer, Mark
core   +1 more source

Strategies for polyhedral surface decomposition

open access: yesProceedings of the eleventh annual symposium on Computational geometry - SCG '95, 1995
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Bernard Chazelle   +3 more
openaire   +2 more sources

H-CoNiSe2/NC dodecahedral hollow structures for high-performance supercapacitors

open access: yesScientific Reports, 2023
The synergistic effect between metal ions and increasing the surface area leads to the fabrication of supercapacitor materials with high capacities.
P. Salehan   +3 more
doaj   +1 more source

Deformations of Period Lattices of Flexible Polyhedral Surfaces [PDF]

open access: yesDiscrete & Computational Geometry, 2014
In the end of the 19th century Bricard discovered a phenomenon of flexible polyhedra, that is, polyhedra with rigid faces and hinges at edges that admit non-trivial flexes. One of the most important results in this field is a theorem of Sabitov asserting that the volume of a flexible polyhedron is constant during the flexion.
Alexander A. Gaifullin   +1 more
openaire   +4 more sources

Multiferroic‐Centric Materials and Systems Engineering for Battery Applications: An Insight Into Mechanisms, Strategies, and Characterizations

open access: yesAdvanced Science, EarlyView.
Multiferroic order parameters – polarization, magnetization, and ferroelastic strain – are positioned as dynamic design variables for batteries. Their mechanistic roles, practical tuning through fabrication and external fields, and ferroic‐resolved characterization routes are unified into a closed‐loop framework, revealing how coupled ferroic responses
Jiaqi Su   +13 more
wiley   +1 more source

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