Viscoelastic properties of amorphous solids deformed under uniform shear stress were studied using a kind of sandwich method with utilizing a sensitive optical technique. Time-dependent deformation data were analyzed on the basis of a mechanical model of anelasticity plus viscosity. Experiments were performed to determine the temperature dependence of viscosity for several kinds of inorganic gl...

This article presents Navier type closed-form solutions for static bending, elastic buckling and free vibration analysis of symmetric functionally graded (FG) sandwich beams using a hyperbolic shear deformation theory. The beam has FG skins and isotropic core. Material properties of FG skins are varied through the thickness according to the power law distribution. The present theory accounts fo...

The diagnosis of trypanosomosis in animals with low parasitaemia is hampered by low diagnostic sensitivity of traditional detection methods. An immunodiagnostic method based on a direct sandwich enzyme-linked immunosorbent assay (ELISA), using monoclonal antibodies, has been examined in a number of African laboratories for its suitability for monitoring tsetse control and eradication programmes...

panels with a genetic algorithm, Applied Acoustics, Volume 70, Issue 3, March 2009, Pages 416-425, ISSN 0003-682X, http://dx.doi.org/10.1016/j.apacoust.2008.06.003. 1 Optimal design of acoustical sandwich panels with a genetic algorithm Tongan Wang, Shan Li, Steven R. Nutt 1. University of Southern California, 3651 Watts Way, VHE 602, Los Angeles, CA 90089, United States Abstract: An optimizati...

Loss of Sandwich Panels by Statistical Energy Analysis Approach. ASME. J. Vib. Acoust.2010;132(1):011004-011004-7. doi:10.1115/1.4000459. Predicting the Sound Transmission Loss of Sandwich Panels by Statistical Energy Analysis Approach Tongan Wang, Shan Li, Shankar Rajaram, Steven R. Nutt 1. University of Southern California, 3651 Watt Way, VHE 602, Los Angeles, CA 90089 Abstract: A statistical...

Weconsider the sandwich problem, a generalization of the recognition problem introduced by Golumbic et al. (1995) [15], with respect to classes of graphs defined by excluding induced subgraphs. We prove that the sandwich problem corresponding to excluding a chordless cycle of fixed length k is NP-complete. We prove that the sandwich problem corresponding to excluding Kr \ e for fixed r is polyn...

In this paper, an approach to aeronautical structural design based on reliability analysis is presented. In this way, the concept of level of safety is discussed and methods of its calculation using statistical data are described. Based on the concept of level of safety, a design procedure is proposed. In order to validate this design procedure, two design cases are studied. In the first case s...

Food handlers could be major sources of intestinal parasites transmission (specially Giardia lamblia, Entamoeba histolytica) in case of not observing the hygienic rules. To determine the prevalence of intestinal parasites' infection in food handlers in Nowshahr and Chalous, 1373-74, 411 food handlers in three major groups including: 1) chelokababi(120), 2) sandwich makers(61), and 3) groceries,...

A sandwich vertebra is formed after multiple osteoporotic vertebral fractures treated by percutaneous vertebroplasty, which has a risk of developing new fractures. The purpose of our study was to (i) investigate the occurrence of new fractures in sandwich vertebra after cement augmentation procedures and to (ii) evaluate the clinical outcomes after prophylactic vertebral reinforcement applied w...