Results 41 to 50 of about 17,553 (306)

Anisotropic alumina ceramics with isotropic optical properties

open access: yesJournal of Advanced Ceramics, 2023
Excellent mechanical and isotropic optical properties are achieved simultaneously from fully dense polycrystalline advanced alumina ceramics with a hexagonal crystal structure, which are optically anisotropic. A small amount (240 ppm) of ZrO2 additive is
Akio IKESUE, Yan Lin AUNG
doaj   +1 more source

Study of isotropy of mechanical properties of the TPMS-based cellular structures [PDF]

open access: yesE3S Web of Conferences, 2022
The study of isotropy of mechanical properties of cellular structures was carried out. The studied objects are based on triply periodic minimal surfaces (“Schwarz primitive”) with various cell size parameter t.
Balabanov Sergey   +4 more
doaj   +1 more source

Appearance of Supersonic Stoneley Waves in Auxetics

open access: yesCrystals, 2022
It is shown that in auxetic materials (materials with negative Poisson’s ratio), supersonic Stoneley waves travelling without attenuation with a velocity equal to or exceeding maximum bulk wave velocity, may exist. Analytical expressions for the relation
Sergey V. Kuznetsov
doaj   +1 more source

TRANSVERSE ISOTROPY

open access: yes, 2023
Ushbu maqola bugungi kundagi transversal izotrop paallileped uchun termoelastik masalani sonli yechishning tahlili keltirilgan.
Yaxshiboev D.S   +2 more
openaire   +2 more sources

On null isotropy in spacetimes

open access: yes, 2005
Null isotropy in a spacetime is defined. The relation of null isotropy to the constant curvature and infinitesimal spatial isotropy is investigated. The influence of null isotropy on conjugate points along null geodesics and curvature singularities is ...
Erkekoglu, F
core   +1 more source

A Lagrangian model for atmospheric pollutant diffusion

open access: yesMeteorologische Zeitschrift, 1994
Equations for particle motion, particle potential temperature and mass fractions of chemical components are determined completely consistent with the budget equations for the means and variances assuming locally isotropic dissipation and a return-to ...
Stefan Heinz
doaj   +1 more source

Isotropy and Combination Problems

open access: yesCoRR, 2020
In a previous paper, the author and his collaborators studied the phenomenon of isotropy in the context of single-sorted equational theories, and showed that the isotropy group of the category of models of any such theory encodes a notion of inner automorphism for the theory.
openaire   +2 more sources

Time isotropy, Lorentz transformation and inertial frames

open access: yes, 2018
International audienceHomogeneity of Euclidean space and time, spatial isotropy, principle of relativity and the existence of a finite speed limit (or its variants) are commonly believed to be the only axioms required for developing the special theory of
Somajit Dey, Dey, Somajit
core   +1 more source

Equivariant bundles and isotropy representations [PDF]

open access: yes, 2010
We introduce a new construction, the isotropy groupoid, to organize the orbit data for split Γ-spaces. We show that equivariant principal G-bundles over split Γ-CW complexes X can be effectively classified by means of representations of their isotropy ...
Hausmann, Jean-Claude   +3 more
core   +1 more source

Polarization‐resolved femtosecond Vis/IR spectroscopy tailored for resolving weak signals in biological samples using minimal sample volume

open access: yesFEBS Open Bio, EarlyView.
Unique biological samples, such as site‐specific mutant proteins, are available only in limited quantities. Here, we present a polarization‐resolved transient infrared spectroscopy setup with referencing to improve signal‐to‐noise tailored towards tracing small signals. We provide an overview of characterizing the excitation conditions for polarization‐
Clark Zahn, Karsten Heyne
wiley   +1 more source

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