The non-linear relaxational acoustic attenuation in amorphous materials is calculated by a perturbation method. A saturation of the attenuation is found for insulating glasses. On the contrary an increase of attenuation is obtained in ideal glassy metals where relaxation is due to electrons only. In the case of real amorphous metals, where both electrons and phonons are active in the relaxation...

Psychophysical experiments have been previously described Weinshall, D. (1989) Nature 341, 737-739; (1991) Vision Research 31, 1731-1748 that involved the perception of many transparent layers, corresponding to multiple matching, in doubly ambiguous random-dot stereograms. Additional experiments are described in the first part of this paper. In one experiment, subjects were required to report t...

El milenarismo de Manuel Lacunza (1731-1801), manifiesto en su obra La Venida del Mesías Gloria y Majestad, escrita el destierro, sostiene como tesis central que antes final la historia resurrección los muertos tendrá lugar un reino mesiánico, terrestre, público visible Jesucristo donde se cumplirán plenamente las promesas vida plena, paz justicia Dios ha hecho a humanidad. Combinando elementos...

The work related to GMPLS Ethernet Label Switching (GELS) extended GMPLS RSVP-TE to support the establishment of Ethernet Label Switching Paths (LSPs). IEEE Ethernet Connectivity Fault Management (CFM) specifies an adjunct Operations, Administration, and Maintenance (OAM) flow to check connectivity in Ethernet networks. CFM can also be used with Ethernet LSPs for fault detection and triggering ...

We introduce a highly compact fiber-optic Fabry-Pérot refractive index sensor integrated with a fluid channel that is fabricated directly near the tip of a 32 μm in diameter single-mode fiber taper. The focused ion beam technique is used to efficiently mill the microcavity from the fiber side and finely polish the end facets of the cavity with a high spatial resolution. It is found that a fring...

Introduction. De Garengeot first described a femoral hernia containing the appendix in 1731. Appendicitis occurring in this rare clinical setting represents a challenge in diagnosis and management. Case Presentation. We present the case of a 71-year-old male with a three-day history of a nontender inguinal mass. Computed tomography (CT) suggested a femoral hernia. Intraoperatively, the hernia s...

INTRODUCTION De Garengeot first described the presence of the appendix within a femoral hernia in 1731. CASE PRESENTATION We report the case of a 66-year-old Caucasian woman who presented with acute appendicitis within an incarcerated femoral hernia. This is the first reported case of de Garengeot's hernia in the Balkan area. CONCLUSIONS Appropriate management without incurring any delay fo...