Results 41 to 50 of about 51,984,083 (126)

Thin Black Line(s) [PDF]

open access: yes, 2011
Thin Black Line(s) focuses on the contribution of Black and Asian women artists to British art in the 1980s. Taking as its starting point three seminal exhibitions curated by artist Lubaina Himid in London from 1983 to 1985, the display charts the coming
Himid, Lubaina
core  

Anomalous proximity effects at the interface of s and s+- superconductors

open access: yes, 2012
We study proximity effects close to a boundary between s and s+- superconductors. Frustration, caused by interaction of the s-wave gap parameter with the opposite-sign gaps of s+- superconductor, leads to several anomalous features. In the case of strong
Koshelev, Alexei E., Stanev, Valentin G.
core   +1 more source

Tensor spherical harmonics on S^2 and S^3 as eigenvalue problems [PDF]

open access: yes, 1978
Tensor spherical harmonics for the 2‐sphere and 3‐sphere are discussed as eigenfunction problems of the Laplace operators on these manifolds. The scalar, vector, and second‐rank tensor harmonics are given explicitly in terms of known functions and their ...
Sandberg, Vernon D.
core  

The study of s-process nucleosynthesis based on barium stars, CEMP-s and CEMP-r/s stars

open access: yes, 2013
In order to get a broader view of the s-process nucleosynthesis we study the abundance distribution of heavy elements of 35 barium stars and 24 CEMP-stars, including nine CEMP-s stars and 15 CEMP-r/s stars.
Cui, Wenyuan   +6 more
core   +1 more source

Quotients of $S^2\times{S^2}$

open access: yes, 2017
We consider closed topological 4-manifolds $M$ with universal cover ${S^2\times{S^2}}$ and Euler characteristic $\chi(M) = 1$. All such manifolds with $\pi=\pi_1(M)\cong {\mathbb Z}/4$ are homotopy equivalent.
Hambleton, I., Hillman, J. A.
core  

Equilibrium Structures of Pyrazine, s-Triazine, and s-Tetrazine

open access: yes, 2019
In recent years, accurate equilibrium (re) structures have been determined for pyridine, pyridazine, and pyrimidine. Here, we report accurate re structures for the structurally related molecules pyrazine, s-triazine, and s-tetrazine, which were obtained ...
Breidung, J., Thiel, W.
core   +1 more source

Positive biorthogonal curvature on S^2 x S^2

open access: yes, 2013
We prove that S^2 x S^2 satisfies an intermediate condition between having metrics with positive Ricci and positive sectional curvature. Namely, there exist metrics for which the average of the sectional curvatures of any two planes tangent at the same ...
Bettiol, Renato G.
core   +1 more source

$S^1 \times S^2$ wormholes and topological charge

open access: yes, 1993
I investigate solutions to the Euclidean Einstein-matter field equations with topology $S^1 \times S^2 \times R$ in a theory with a massless periodic scalar field and electromagnetism.
A. Hosoya   +16 more
core   +1 more source

Dynamic (S,s) Economies [PDF]

open access: yes
In this paper we provide a framework to study the aggregate dynamic behavior of an economy where individual units follow (S,s) policies. We characterize structural and stochastic heterogeneities that ensure convergence of the economy's aggregate to that ...
Eduardo M.R.A. Engel   +1 more
core  

Phenotypic yield-attributed traits, essential oil content and composition of Iranian Grammosciadium platycarpum (Apiaceae) populations: a rich source of (S)-(+)-linalool

open access: yesBMC Plant Biology
(S)-(+)-linalool is a non-cyclic oxygenated monoterpene which is very useful and widely used in the cosmetic industries, especially in the production of perfume and cologne. Thus, due to the high commercial value and high demand, the search for new plant sources rich in (S)-(+)-linalool in agricultural systems to develop the business of this compound ...
Ghasem Eghlima   +4 more
openaire   +3 more sources

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