نتایج جستجو برای: near ring

تعداد نتایج: 381028  

2011
David A. Powell Kirsty Hannam Ilya V. Shadrivov Yuri S. Kivshar

We present experimental, numerical, and analytical results for the study of near-field interaction of twisted split-ring resonators, the basic elements of the so-called stereometamaterials. In contrast to previous results, we observe a crossing point in the dispersion curves where the symmetric and antisymmetric modes become degenerate. We introduce a model to describe the interplay between mag...

1999
J. K. Kotilainen S. D. Ryder

We present high spatial resolution near–infrared broad-band JHK images and, for the first time, Brγ 2.1661 μm and H2 1–0 S(1) 2.122 μm emission line images of the circumnuclear star forming ring (major axis diameter 7 = 2 kpc) in the starburst galaxy NGC 7771. These data are used to investigate the morphology and extinction of the starburst ring and to study its star forming properties and hist...

Journal: :The Journal of chemical physics 2009
U Kadhane J U Andersen E Bonderup B Concina P Hvelplund M-B Suhr Kirketerp B Liu S Brøndsted Nielsen S Panja J Rangama K Støchkel S Tomita H Zettergren K Hansen A E K Sundén S E Canton O Echt J S Forster

We present a detailed study of the electronic structure and the stability of C(60) dianions in the gas phase. Monoanions were extracted from a plasma source and converted to dianions by electron transfer in a Na vapor cell. The dianions were then stored in an electrostatic ring, and their near-infrared absorption spectrum was measured by observation of laser induced electron detachment. From th...

Journal: :The Astrophysical journal 2000
Silber Gledhill Duchêne Ménard

We present 1 µm Hubble Space Telescope/near-infrared camera and multiobject spectrometer resolved imaging polarimetry of the GG Tau circumbinary ring. We find that the ring displays east-west asymmetries in surface brightness as well as several pronounced irregularities but is smoother than suggested by ground-based adaptive optics observations. The data are consistent with a 37 degrees system ...

2008
Julien Derr Jason T. Hopper Anirban Sain Andrew D. Rutenberg

We model the self-organization of the MinE ring that is observed during subcellular oscillations of the proteins MinD and MinE within the rod-shaped bacterium Escherichia coli. With a steady-state approximation, we can study the MinE-ring generically – apart from the other details of the Min oscillation. Rebinding of MinE to depolymerizing MinD filament tips controls MinE ring formation through...

Journal: :bulletin of the iranian mathematical society 2012
mohamed chhiti najib mahdou

in this work, we investigate the transfer of some homological properties from a ring $r$ to its amalgamated duplication along some ideal $i$ of $r$ $rbowtie i$, and then generate new and original families of rings with these properties.

Journal: :bulletin of the iranian mathematical society 2013
o. lunqun l. jingwang x. yueming

for a ring endomorphism $alpha$ and an $alpha$-derivation $delta$, we introduce a concept, so called skew $pi$-armendariz ring, that is a generalization of both $pi$-armendariz rings, and $(alpha,delta)$-compatible skew armendariz rings. we first observe the basic properties of skew $pi$-armendariz rings, and extend the class of skew $pi$-armendariz rings through various ring extensions. we nex...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز - دانشکده علوم 1390

throughout this dissertation r is a commutative ring with identity and m is a unitary r-module. in this dissertation we investigate submodules of multiplication , prufer and dedekind modules. we also stat the equivalent conditions for which is ring , wher l is a submodule of afaithful multiplication prufer module. we introduce the concept of integrally closed modules and show that faithful mu...

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2009
Julien Derr Jason T Hopper Anirban Sain Andrew D Rutenberg

We model the self-organization of the MinE ring that is observed during subcellular oscillations of the proteins MinD and MinE within the rod-shaped bacterium Escherichia coli. With a steady-state approximation, we can study the MinE ring generically--apart from the other details of the Min oscillation. Rebinding of MinE to depolymerizing MinD-filament tips controls MinE-ring formation through ...

Journal: :journal of linear and topological algebra (jlta) 0
s jamshidvand department of mathematics, shahed university, tehran, iran. h haj seyyed javadi department of mathematics, shahed university, tehran, iran. n vahedian javaheri department of mathematics, shahed university, tehran, iran.

in this paper, we introduce the new notion of n-f-clean rings as a generalization of f-clean rings. next, we investigate some properties of such rings. we prove that mn(r) is n-f-clean for any n-f-clean ring r. we also, get a condition under which the de nitions of n-cleanness and n-f-cleanness are equivalent.

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