Failure maps of sandwich panels such as beam, plate and shell are of great importance in designing such structures. In this paper, failure maps of sandwich beams with composite skin and honeycomb core are obtained. The effect of transverse shear in skins and core and the effect of double walls of honeycomb core have been taken into account. Shear deformation of skins and core are assumed to be ...

Several high molecular weight polypeptides have been shown to quantitatively copurify with brain tubulin during cycles of in vitro assembly-disassembly. These microtubule-associated proteins (MAPs) have been shown to influence the rate and extent of microtubule assembly in vitro. We report here that a heat-stable fraction highly enriched for one of the MAPs, MAP2 (mol wt approximately 300,000 d...

[1]. Forner A et al. Cancer 2009; 115:616-623. [2]. Thomas CD et al. MAGMA 2004; 17:271-280. [3]. Baudelet C et al. Magn Reson Med 2006; 56:1041-1049. [4]. Hoskin PJ et al. Int J Radiat Oncol Biol Phys 2007; 68:1065-1071. [5]. Henning EC et al. Magn Reson Med 2007; 57:501-512. [6]. Deng J et al. J Magn Reson Imaging 2008; 27:1069-1076. Fig. 1 Full FOV absolute T2* change maps (arrow, tumor )(a)...

x10 Figure 1 Sagittal slices of a phantom (1 row) and sagittal and axial slices of two subjects (2 and3 row) representing the: (a) frequency shift maps, Δω, as measured from the multiple echo before oxygen modulation; (b) frequency shift map attributed to oxygen, Δωoxy (difference between Δω at minimum and maximum oxygen concentration, multiplied by 10 facilitate visualization); (c) frequency s...

In this paper we derive two rigorous properties of residence-time distributions for flows in pipes and mixers motivated by computational results of Khakhar et al. [Chem. Eng. Sci. 42, 2909 (1987)], using some concepts from ergodic theory. First, a curious similarity between the isoresidence-time plots and Poincare maps of the flow observed in Khakhar et al. is resolved. It is shown that in long...

The use of spectral domain optical coherence tomography (SD-OCT) in the study of chronic serpiginous choroiditis was evaluated. Two patients with chronic serpiginous choroiditis were imaged using two prototype SD-OCT systems (6-microm axial resolution). Raster scans covering 6 x 6 X 2-mm regions of the retina were obtained, enabling the study of different retinal cross-sectional images. Thickne...

BACKGROUND AND PURPOSE We herein present a methodology for standardized and clinically applicable measurement of T1 relaxation maps with high resolution and volumetric coverage by using the commercially available 3D spoiled gradient-echo sequence. The reproducibility of the T1 metrics derived from these maps and their sensitivity to distinguish between control participants and patients with mul...

Leucoencephalopathy with brainstem and spinal cord involvement and elevated lactate is a white matter disorder caused by DARS2 mutations. The pathology is unknown. We observed striking discrepancies between improvement on longitudinal conventional magnetic resonance images and clinical deterioration and between large areas of high signal on diffusion-weighted imaging and small areas with low ap...

Background The spinal cord is a focus of many radiological diagnostics of such debilitating pathologies as multiple sclerosis, amytrophic lateral sclerosis, spondylosis, and post-traumatic injury. Since these disease states differentiate at the cellular level, diffusion-weighted imaging plays an important role due to its sensitivity to tissue microstructure and white matter connectivity. Most s...

Street layout is an important element of urban morphology that informs on urban patterns influenced by city growing through the years under different planning regulations and different socio-economic contexts. It is assumed by several authors that urban morphology has a fractal or monofractal nature. However, not all the urban patterns can be considered as monofractal because of the presence of...