Results 61 to 70 of about 127,135 (294)

Tilings, tiling spaces and topology [PDF]

open access: yesPhilosophical Magazine, 2006
To understand an aperiodic tiling (or a quasicrystal modeled on an aperiodic tiling), we construct a space of similar tilings, on which the group of translations acts naturally. This space is then an (abstract) dynamical system. Dynamical properties of the space (such as mixing, or the spectrum of the translation operator) are closely related to bulk ...
openaire   +2 more sources

On‐Surface Indigo‐Based Bimolecular Coordination Networks with Programmable Regular or Vitreous Structure

open access: yesAdvanced Functional Materials, EarlyView.
A previously unreported coordination motif stabilising single Fe atoms by indigo chelation and pyridyl coordination on Au(111) has been revealed. By using planar tritopic pyridyl linkers (TPyB), extended 2D porous networks of indigo3(TPyB)2Fe6 form. These networks can be crystalline or vitreous and offer an environment where individual coordination ...
Hongxiang Xu   +9 more
wiley   +1 more source

La industria cerámica brasileña

open access: yesBoletín de la Sociedad Española de Cerámica y Vidrio, 2001
Ceramics play an important role in the Brazilian economy, with a participation estimated in 1% of the GNP ( Gross National Product), corresponding to about 6 billion dollars.
Pacheco Jordao, M. A.   +1 more
doaj  

An Efficient Tile-Pyramids Building Method for Fast Visualization of Massive Geospatial Raster Datasets

open access: yesAdvances in Electrical and Computer Engineering, 2016
Building tile-pyramids is an effective way for publishing and accessing the map visualization service of large-scale geospatial data in the web. But it is a time-consuming task in Geographic Information System (GIS) to build tile-pyramids using ...
GUO, N., XIONG, W., WU, Q., JING, N.
doaj   +1 more source

Spotlight Tiling

open access: yesAnnals of Combinatorics, 2010
This article introduces spotlight tiling, a type of covering which is similar to tiling. The distinguishing aspects of spotlight tiling are that the "tiles" have elastic size, and that the order of placement is significant. Spotlight tilings are decompositions, or coverings, and can be considered dynamic as compared to typical static tiling methods.
openaire   +3 more sources

Golden‐Ratio–Guided Aperiodic Architected Metamaterials with Simultaneously Enhanced Strength and Toughness

open access: yesAdvanced Functional Materials, EarlyView.
Guided by the golden ratio, a class of aperiodic architected metamaterials is introduced to address the intrinsic trade‐off between strength and toughness. By unifying local geometric heterogeneity with global order, the golden‐ratio‐guided aperiodic architecture promotes spatial delocalization of damage tolerence regions, leading to more tortuous ...
Junjie Deng   +9 more
wiley   +1 more source

Self-Affine Tilings with Several Tiles, I

open access: yesApplied and Computational Harmonic Analysis, 1999
A collection \(T_i \subseteq {\mathbb R}^d\), \(i=1, \ldots, M\), together with an expanding \(d\times d\) matrix \(A\), and a collection of sets \(\Gamma_{ij} \subseteq {\mathbb Z}^d\), \(i,j=1, \ldots, M\), is called \textit{self-affine} if \[ AT_i = \bigcup_{j=1}^M (\Gamma_{ij}+T_j), \;\;(i=1, \ldots, M) \] (the sets in the union above are assumed ...
Gröchenig, Karlheinz   +2 more
openaire   +3 more sources

Bioinspired Stabilization of Fluorescent Au@SiO2 Tracers for Multimodal Biological Imaging

open access: yesAdvanced Functional Materials, EarlyView.
This study demonstrates a bioinspired stabilization strategy for fluorescent gold‐silica nanoparticles. Inspired by natural biosilica maturation, high‐temperature calcination transforms the silica shells, preventing dissolution in cell culture media and intracellular environments.
Wang Sik Lee   +5 more
wiley   +1 more source

An Engineered Living Material With Pro‐Angiogenic Activity Inducible by Near‐Infrared Light

open access: yesAdvanced Functional Materials, EarlyView.
NIR‐responsive engineered living materials (ELMs) for controlled angiogenesis: Near‐infrared (800 nm) light activates engineered probiotic bacteria within alginate‐based living materials to secrete a blood vessel‐regenerating protein. The released protein promotes pro‐angiogenic effects in endothelial networks and chick chorioallantoic membranes.
Anwesha Chatterjee   +4 more
wiley   +1 more source

Odraz dobovej meštianskej módy na košických nálezoch kachlíc z 15. – 16. storočia

open access: yesArchaeologia Historica, 2016
Príspevok spracováva neveľký súbor kachlíc a foriem na kachlice z Košíc cez optiku dobovej módy, ktorá je na nich zobrazená. Žánrovej pestrosti motívov súboru kachľových výrobkov je nadradený hlavný predmet záujmu a tým sú odevy zobrazených postáv.
Lucia Luštíková, Rastislav Rusnák
doaj   +1 more source

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