Results 81 to 90 of about 21,122 (292)

A Dislocation Perspective on Strength and Toughness in Ceramics

open access: yesAdvanced Engineering Materials, EarlyView.
Dislocations in ceramics enjoy a long but yet under‐appreciated history. The three research waves for dislocations in ceramics highlight the topic evolution over the last 90 years. This review focuses on the impact of dislocation on strength and toughness in ceramics.
Xufei Fang
wiley   +1 more source

Elliptic curves with common torsion $x$-coordinates and hyperelliptic torsion packets

open access: yes, 2022
We establish a connection between torsion packets on curves of genus $2$ and pairs of elliptic curves realized as double covers of the projective line $\mathbb{P}_{x}^{1}$ that have many common torsion $x$-coordinates.
Fu, Hang, Stoll, Michael
core   +1 more source

Torsion Pairs and Simple-Minded Systems in Triangulated Categories [PDF]

open access: yesApplied Categorical Structures, 2014
Let T be a Hom-finite triangulated Krull-Schmidt category over a field k. Inspired by a definition of Koenig and Liu, we say that a family S of pairwise orthogonal objects in T with trivial endomorphism rings is a simple-minded system if its closure under extensions is all of T.
openaire   +3 more sources

Methyl 2,2-diphenyl-2-(prop-2-yn-1-yloxy)acetate

open access: yesActa Crystallographica Section E, 2012
The molecular structure of the title compound, C18H16O3, exhibits a new R2–C(COOMe)(OCH2CCH) group. The C—O—C—C torsion angle is 153.3 (1)°.
A. R. Ramesha   +4 more
doaj   +1 more source

Experimental and Numerical Modal Analysis of Composite Sandwich Structures Using Surfboards as Model Systems

open access: yesAdvanced Engineering Materials, EarlyView.
This article presents an experimental and numerical modal investigation of composite sandwich structures using surfboards as model systems. By comparing different core materials and reinforcement strategies, the study demonstrates how local stiffeners influence vibrational response and introduce characteristic modal features, highlighting modal ...
Brett Connellan   +4 more
wiley   +1 more source

Support $τ_2$-tilting and 2-torsion pairs

open access: yes, 2021
Supplants arXiv:1808.05184. 14 pages.
openaire   +2 more sources

3,3-Dichloro-1-(chloromethyl)indolin-2-one

open access: yesActa Crystallographica Section E, 2010
In the title compound, C9H6Cl3NO, the pyrrole ring is almost coplanar with the benzene ring [dihedral angle = 1.90 (9)°], while the Cl—C—N—C torsion angle is 98.78 (17)°. In the crystal,
Yao Wang   +3 more
doaj   +1 more source

Design and Analysis of Compression–Torsion Coupling Metamaterials Using the Golden Section Method

open access: yesAdvanced Engineering Materials, EarlyView.
A novel compression–torsion metamaterial is engineered using inclined rods and symmetry breaking. To optimize its torsional performance, the golden section method is employed. The mechanical response of the metamaterial is validated through both numerical analysis and experimental validation.
Amirhossein Hassani, Sara Bagherifard
wiley   +1 more source

Geometry of Almost Pure Metric Pseudo-F-Manifolds: Insights from Walker 4-Manifolds

open access: yesMathematics
This article investigates the geometric and structural properties of almost pure metric pseudo-F-manifolds, with a focus on Walker 4-manifolds. We analyze integrability conditions and characterize pure metric pseudo-F-Kählerian Walker manifolds ...
Yanlin Li   +4 more
doaj   +1 more source

rac-1,2,3,4-Tetrahydro-1,4-methanoanthracene-6,7-dicarbonitrile

open access: yesActa Crystallographica Section E, 2011
The title compound, C17H12N2, comprises a norbornane unit having a dicyanonaphthalene ring fused on one side. Both cyano groups are twisted slightly out of the plane of the naphthalene ring system [C—C—C—C torsion angle = 1 ...
Kew-Yu Chen   +4 more
doaj   +1 more source

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