نتایج جستجو برای: delta compatible ring

تعداد نتایج: 229879  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی اصفهان 1371

the effect of the presence of perforations on he stresses of a plate is a problem which is of great interest in structural design and in the mathemattical theory of elasticity. among the many hole patterns that are likely to require consideration is the ring of equally spaced circular holes. the present worke investigates stress & strain analysis of a thin isotropic circular plate containing a ...

Journal: :Optics express 2012
William S Fegadolli German Vargas Xuan Wang Felipe Valini Luis A M Barea José E B Oliveira Newton Frateschi Axel Scherer Vilson R Almeida Roberto R Panepucci

A proof-of-concept for a new and entirely CMOS compatible thermo-optic reconfigurable switch based on a coupled ring resonator structure is experimentally demonstrated in this paper. Preliminary results show that a single optical device is capable of combining several functionalities, such as tunable filtering, non-blocking switching and reconfigurability, in a single device with compact footpr...

Journal: :The Journal of antibiotics 1989
S Fushimi S Nishikawa A Shimazu H Seto

New antibiotics phoslactomycins A, B, C, D, E and F, which contain alpha, beta-unsaturated delta-lactone, phosphate ester, conjugated diene and cyclohexane ring moieties, were isolated from the culture broth of a soil isolate actinomycete. Morphological, cultural and physiological studies revealed that the isolate is a strain of Streptomyces nigrescens. Phoslactomycins were obtained by butanol ...

Journal: :Angewandte Chemie 2013
Daniel W Paley Danielle F Sedbrook John Decatur Felix R Fischer Michael L Steigerwald Colin Nuckolls

Alcohol is the answer! An inactive, air-stable, dimeric molybdenum alkylidyne complex is activated toward ring-opening alkyne metathesis polymerization (ROAMP) by the addition of methanol. The ROAMP is compatible with water and phenol-containing substrates and with the in situ photochemical generation of alkyne monomers from cyclopropenones.

2003
W. BLEY

We develop an algorithm for computing numerical evidence for a conjecture whose validity is predicted by the requirement that the Equivariant Tamagawa Number conjectures for Tate motives as formulated by Burns and Flach are compatible with the functional equation of Artin Ä-series. The algorithm includes methods for the computation of Fitting ideals and projective lattices over the integral gro...

Journal: :Physical review letters 2006
R Leturcq D Sánchez G Götz T Ihn K Ensslin D C Driscoll A C Gossard

We have performed nonlinear transport measurements as a function of a perpendicular magnetic field in a semiconductor Aharonov-Bohm ring connected to two leads. While the voltage-symmetric part of the conductance is symmetric in the magnetic field, the voltage-antisymmetric part of the conductance is not symmetric. These symmetry relations are compatible with the scattering theory for nonlinear...

Journal: :Neurocomputing 2004
Simon J. Thorpe Rudy Guyonneau Nicolas Guilbaud Jong-Mo Allegraud Rufin van Rullen

SpikeNet is an image-processing system that uses very large-scale networks of asynchronously -ring neurons. The latest version allows very e0cient object identi-cation in real-time using a video input, and although this speci-c implementation is designed to run on standard computer hardware, there are a number of clear implications for computational neuroscience. Speci-cally, SpikeNet demonstra...

Journal: :Organic & biomolecular chemistry 2011
Matteo Montanari Alberto Bugana Arvind K Sharma Dario Pasini

[2.2]Paracyclophanes, incorporating functional groups in the aliphatic bridges, suitable for elimination to give [2.2]paracyclophanedienes, are synthesized through a novel approach. It relies on a double Pummerer rearrangement on dithiacyclophane precursors, followed by ring contraction through a photochemical sulfur extrusion, and it is compatible with aryl moieties possessing very different e...

Journal: :bulletin of the iranian mathematical society 2013
n. ashrafi e. nasibi

let r be an associative ring with unity. an element a in r is said to be r-clean if a = e+r, where e is an idempotent and r is a regular (von neumann) element in r. if every element of r is r-clean, then r is called an r-clean ring. in this paper, we prove that the concepts of clean ring and r-clean ring are equivalent for abelian rings. further we prove that if 0 and 1 are the only idempotents...

Journal: :bulletin of the iranian mathematical society 0
n. ashrafi semnan university e. nasibi semnan university

let r be an associative ring with unity. an element a in r is said to be r-clean if a = e+r, where e is an idempotent and r is a regular (von neumann) element in r. if every element of r is r-clean, then r is called an r-clean ring. in this paper, we prove that the concepts of clean ring and r-clean ring are equivalent for abelian rings. further we prove that if 0 and 1 are the only idempotents...

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