Results 101 to 110 of about 1,002,963 (278)
PAPER MODELS OF SURFACES WITH CURVATURE CREATIVE VISUALIZATION LABS BALTIMORE JOINT MATHEMATICS MEETINGS [PDF]
, 2009 A model of a cone can be constructed from a piece of paper by removing a wedge and taping the edges together. The paper models discussed here expand on this idea (one or more wedges are added and/or removed).
ISERI, HOWARD
core +1 more source
Advanced Science, EarlyView.This work demonstrates a design paradigm of phonon‐driven negative‐thermal‐expansion (NTE) flexible framework that exploits the intrinsic lattice flexibility of NTE frameworks to simultaneously suppress thermal expansion and activate oxide‐ion conduction, offering a promising strategy to mitigate TEC mismatch in solid‐state ionic devices.
Xiaohui Li +10 more
wiley +1 more source
Journal of Basic and Applied Zoology, 2014 The tongue of common kingfisher (Alcedo atthis, Alcedinidae, Aves) was investigated by means of light and scanning electron microscopy to elucidate its ultramorphological and histological features.
Sh.A. Al-Zahaby, E.H. Elsheikh
doaj +1 more source
Advanced Science, EarlyView.Geometric constraint reconfiguration enables a rigid–foldable kirigami‐inspired mechanism to switch between twisting, directional translation, and self‐locking states. By encoding multifunctionality directly into its architecture, the mechanism achieves multimodal motion and passive locking without reassembly, providing a compact platform for adaptive ...
Jianlin Wang, Zhongmin Song, Ketao Zhang
wiley +1 more source
AUTOMORPHISM GROUPS OF MAPS, SURFACES AND SMARANDACHE GEOMETRIES [PDF]
, 2005 A combinatorial map is a connected topological graph cellularly embedded in a surface. As a linking of combinatorial configuration with the classical mathematics, it fascinates more and more mathematician’s interesting.
Linfan Mao, MAO, LINFAN
core +1 more source
Advanced Science, EarlyView.Through quantitative ligand stripping of [Cu18H17(PR3)10]+ nanoclusters via intramolecular interaction modulation, selectivity for CO2 electroreduction to C2H4 is significantly enhanced. The weakly coordinating ligand triggers dual‐ligand stripping (FEC2H4 = 70.59%), whereas the strongly coordinating ligand results in single‐ligand retention (FEC2H4 ...
Ziqi Chen +8 more
wiley +1 more source
The mechanical beauty of hierarchically organized living structures [PDF]
S&F_scienzaefilosofia.it, 2014 By traveling through the inner structure of biological tissues, for instance by means of a scanning or a transmission electron microscope, unexpectedly exact geometries and symmetries in the form of perfect lattices, honeycomb networks, helical ...
Massimiliano Fraldi
doaj
Numerical approach for the simulation of flow-induced noise around a structure with complex geometry: High-speed train bogie in a cavity [PDF]
International Journal of Fluid EngineeringThe bogie region is a significant source of aerodynamic noise on high-speed trains. Owing to its complex geometry and flow field, numerical simulations using computational fluid dynamics are especially challenging. The main challenge is to achieve a grid
Yuan He, David Thompson, Zhiwei Hu
doaj +1 more source
Dental Research Journal, 2016 Background: This study aimed to evaluate the effect of different percentages of ethanol solvent of an experimental methacrylate-based dentin bonding agent containing polyhedral oligomeric silsesquioxanes (POSS) on the microleakage of resin composite ...
Mahboubeh Mirzakhani +2 more
doaj +1 more source
Advanced Science, EarlyView.A novel high‐entropy perovskite oxide, (Gd0.2Tb0.2Dy0.2Ho0.2Er0.2)FeO3, was successfully synthesized for advanced hydrogen sulfide gas detection. By synergistically coupling high‐entropy‐induced local lattice distortion with weak magnetic field modulation, the tailored material generates abundant active sites. This innovative dual strategy dramatically
Yunfei Wang +7 more
wiley +1 more source