Results 71 to 80 of about 1,099,483 (264)

Pyramidal Structures on Yttria‐Stabilized Zirconia after High Temperature Exposure at 1500°C: New Features on an Old Material

open access: yesAdvanced Engineering Materials, EarlyView.
New features on yttria‐stabilized zirconia after exposure at 1500°C: Newly discovered pyramidal structures on an old material. After exposure at 1550°C on the cross section of YSZ new features, namely pyramidal structures are discovered. These structures grow with time, increase in numbers, appear as singularities, are often arranged in strings, and ...
Doris Sebold   +2 more
wiley   +1 more source

DETERMINATION OF THE DISTANCE BETWEEN THE ADDITIONAL POINT AND GEOREFERENCED GPS STANDPOINT

open access: yesRudarsko-geološko-naftni Zbornik, 1993
Determinating distances in unacceptable conditions from the georeferenced standing-place to some inaccessible point is performed by measuring the asimuth in the simulated triangle with the presumed base (the paper is published in Croatian).
Božidar Kanajet
doaj  

Translative Packing of Unit Squares Into Equilateral Triangles Some New Results On Information Transmission Over Noisy Channels

open access: yesDemonstratio Mathematica, 2015
Every collection of n (arbitrary-oriented) unit squares can be packed translatively into any equilateral triangle of side length 2:3755· √n.
Januszewski Janusz
doaj   +1 more source

Predictors of willingness to get a COVID-19 vaccine in the U.S

open access: yesBMC Infectious Diseases, 2021
Background As COVID-19 vaccine distribution efforts continue, public health workers can strategize about vaccine promotion in an effort to increase willingness among those who may be hesitant.
Bridget J. Kelly   +8 more
doaj   +1 more source

Exploring Dipolar Dynamics and Ionic Transport in Metal‐Organic Frameworks: Experimental and Theoretical Insights

open access: yesAdvanced Functional Materials, EarlyView.
In this study, the interplay of dipolar dynamics and ionic charge transport in MOF compounds is investigated. Synthesizing the novel structure CFA‐25 with integrated freely rotating dipolar groups, local and macroscopic effects, including interactions with Cs cations are explored.
Ralph Freund   +6 more
wiley   +1 more source

Understanding and Optimizing Li Substitution in P2‐Type Sodium Layered Oxides for Sodium‐Ion Batteries

open access: yesAdvanced Functional Materials, EarlyView.
This work explores Li‐substituted P2 layered oxides for Na‐ion batteries by crystallographic and electrochemical studies. The effect of lithium on superstructure orderings, on phase transitions during synthesis and electrochemical cycling and on the interplay of O‐ versus TM‐redox is revealed via various advanced techniques, including semi‐simultaneous 
Mingfeng Xu   +5 more
wiley   +1 more source

Dissection of a Triangle into Similar Triangles [PDF]

open access: yesDiscrete & Computational Geometry, 2005
For \(n\geq 2\), let \(f(n)\) be the number of triangles that can be dissected into \(n\) similar nonright triangles, and let \(g(n)\) be the number of nonsimilar nonright triangles \(T\) that can be dissected into \(n\) parts similar to \(T\). It follows from an example of \textit{H. Kaiser} [Elem. Math. 46, 106--111 (1991; Zbl 0744.05004)] that \(f(n)
openaire   +2 more sources

Modulating Two‐Photon Absorption in a Pyrene‐Based MOF Series: An In‐Depth Investigation of Structure–Property Relationships

open access: yesAdvanced Functional Materials, EarlyView.
This study investigates H4TBAPy‐based metal–organic frameworks (MOFs) ‐ NU‐1000, NU‐901, SrTBAPy, and BaTBAPy ‐ for multiphoton absorption (MPA) performance. It observes topology‐dependent variations in the 2PA cross‐section, with BaTBAPy exhibiting the highest activity.
Simon N. Deger   +10 more
wiley   +1 more source

Fracton Infrared Triangle

open access: yesPhysical Review Letters
In theories with conserved dipole moment, isolated charged particles (fractons) are immobile, but dipoles can move. We couple these dipoles to the fracton gauge theory and analyze the universal infrared structure. This uncovers an observable double kick memory effect which we relate to a novel dipole soft theorem.
Alfredo Pérez   +2 more
openaire   +4 more sources

Selective Benzene Capture by Metal‐Organic Frameworks

open access: yesAdvanced Functional Materials, EarlyView.
Metal‐organic frameworks (MOFs) hold significant potential for capturing benzene from air emissions and hydrocarbon mixtures in liquid phases. This capability stems from their precisely engineered structures, versatile chemistries, and diverse binding interactions.
Zongsu Han   +4 more
wiley   +1 more source

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