Chromatin insulators block the action of transcriptional enhancers when interposed between an enhancer and a promoter. In this study, we examined the role of chromatin loops formed by two unrelated insulators, gypsy and Fab-7, in their enhancer-blocking activity. To test for this activity, we selected the white reporter gene that is activated by the eye-specific enhancer. The results showed tha...

0957-4174/$ see front matter Crown Copyright 2 doi:10.1016/j.eswa.2008.11.008 * Corresponding author. Tel.: +90 424 2370000/523 E-mail addresses: [email protected] (M.T. Ge (M. Cebeci). High voltage insulators form an essential part of the high voltage electric power transmission systems. Any failure in the satisfactory performance of high voltage insulators will result in considerable lo...

Contents Introduction iii Overview ix 1 Mott insulators and Spin liquids 1 1.

This paper presents a novel method for determination of insulator contamination (IC) level. ICs caused some problems in electric networks. Some faults occur in electric system due to ICs. These faults sometimes log to a sudden and serious damages to the systems. So ICs reduce power quality and reliability indexes. Usually insulator washing is a solution for this problem and its events. Insulato...

Submitted for the MAR11 Meeting of The American Physical Society Spin polarization and transport of surface states in the topological insulators Bi2Se3 and Bi2Te3 from first principles1 OLEG YAZYEV, JOEL MOORE, STEVEN LOUIE, UC Berkeley and LBNL — We investigate the band dispersion and the spin texture of topologically protected surface states in the reference bulk topological insulators Bi2Se3...

Topological insulators are new states of quantum matter in which surface states residing in the bulk insulating gap of such systems are protected by time-reversal symmetry. The study of such states was originally inspired by the robustness to scattering of conducting edge states in quantum Hall systems. Recently, such analogies have resulted in the discovery of topologically protected states in...

Silicon oxynitride (SiOxNy) and nitride (SiNx) insulators have been deposited or grown (with or without silane in the gas mixture, respectively) by electron cyclotron resonance (ECR) plasmas on Si and/or GaAs substrates at room temperature (20 jC) and low pressures (up to 10 mTorr). Chemical bonding characteristics of the SiOxNy and SiNx films were evaluated using Fourier transform infrared spe...

The anomalous Hall effect (AHE) arises from the interplay of spin-orbit interactions and ferromagnetic order and is a potentially useful probe of electron spin polarization, especially in nanoscale systems where direct measurement is not feasible. While AHE is rather well-understood in metallic ferromagnets, much less is known about the relevance of different physical mechanisms governing AHE i...

Insulators are DNA elements that establish independent transcriptional domains within eukaryotic genomes. The Drosophila scs and scs' insulators localize near the borders of a structural domain in the polytene chromosomes, known as a puff, produced by transcription of the 87A heat shock protein (hsp) genes. It has been suggested that scs and scs' are boundary elements that delimit this deconden...

The source and sink potential model is used to predict the existence of omni-conductors (and omni-insulators): molecular conjugated π systems that respectively support ballistic conduction or show insulation at the Fermi level, irrespective of the centres chosen as connections. Distinct, ipso, and strong omni-conductors/omni-insulators show Fermi-level conduction/insulation for all distinct pai...