An approach for ­ nding the e¬ective properties of two-dimensional periodic rectangular checkerboard media is presented; it is demonstrated that one can take a relatively simple model problem, an appropriate system of joined quarter planes, and that after appropriate conformal transformation one can use this to solve for either periodic or doubly periodic structures. Illustrative calculations i...

Cell membranes contain multiple lipid and protein components having heterogeneous in-plane (lateral) distribution. Nanoscale rafts are believed to play an important functional role, but their phase state-domains of coexisting phases or composition fluctuations-is unknown. As a step toward understanding lateral organization of cell membranes, we investigate the difference between nanoscale domai...

The response of a quartz crystal microbalance ~QCM! is considered using a wave equation for the substrate and the Navier-Stokes equations for a finite liquid layer under a slip boundary condition. It is shown that when the slip length to shear wave penetration depth is small, the first-order effect of slip is only present in the frequency response. Importantly, in this approximation the frequen...

We study a N = 1 supersymmetric model in a S1×R spacetime. We find that by choosing appropriate boundary conditions for the contributing fields supersymmetry can be preserved. However if we add a hard supersymmetry breaking term, we observe that for small values of the length of the S dimension, supersymmetry remains unbroken and breaks spontaneously when the length exceeds a critical value. Th...

We consider the question of efficiently extending the key length of block ciphers. To date, the approach providing highest security is triple encryption (used e.g. in Triple-DES), which was proved to have roughly κ+ min{n/2, κ/2} bits of security when instantiated with ideal block ciphers with key length κ and block length n, at the cost of three block-cipher calls per message block. This paper...

Article history: Received 17 May 2013 Accepted 6 August 2013 Available online 16 August 2013 Creep was studied in Haynes 230, a material candidate for the very high temperature reactor’s intermediate heat exchanger, at 800 C and 900 C. This study focused on the differences between the behavior at the two elevated temperature, and using the microstructure, grain boundary serrations and triple ju...

The synthesis of the cationic gold(i) complexes [Au(C[triple bond, length as m-dash]CC5H4N)(CH3-PTA)]X (X = I, 1; X = OTf, 4), [Au(C[triple bond, length as m-dash]CC5H4N-CH3)(PTA)]X (X = I, 2; X = OTf = 5; PTA = 1,3,5-triaza-7-phosphatricyclo[3.3.1.13.7]decane) and [Au(C[triple bond, length as m-dash]CC5H4N-CH3)(DAPTA)]X (X = I, 3; X = OTf = 6, DAPTA = 3,7-diacetyl-1,3,7-triaza-5-phosphabicyclo...

For any 1-error-correcting binary code C of length m we will construct a 1-perfect binary code P (C) of length n = 2 − 1 such that fixing the last n − m coordinates by zeroes in P (C) gives C. In particular, any complete or partial Steiner triple system (or any other system that forms a 1-code) can always be embedded in a 1-perfect code of some length (compare with [13]). Since the weight-3 wor...

  Background: The prevalence of hip dysplasia is 1 in 1000. Several pelvic osteotomy methods have been developed to prevent early osteoarthritis, such as triple osteotomy. In this study we are going to introduce our new technique that was done on 4 patients with favorable short-term results.   Methods: Four patients underwent triple osteotomy and fixation using a reconstruction plate and early ...

background: the prevalence of hip dysplasia is 1 in 1000. several pelvic osteotomy methods have been developed to prevent early osteoarthritis, such as triple osteotomy. in this study we are going to introduce our new technique that was done on 4 patients with favorable short-term results.   methods: four patients underwent triple osteotomy and fixation using a reconstruction plate and early we...