In the present study, the effects of intracerebroventricular (ICV) injections of histamine, chlorpheniramine (H1-receptor antagonist) and ranitidine (H2-receptor antagonist) were investigated on visceral nociception induced by an intraperitoneal (IP) injection of acetic acid in rats. The latency time to the beginning of the first abdominal wall contraction (the first writhe) was recorded and th...

A method for MR angiography after bolus injection of a normal dose (0.1 mmol/kg) of contrast agent is presented. Projection angiograms are acquired with a non-slice selective Snapshot FLASH sequence with a time resolution of 1 s per image or better. Typically 40 to 60 images are acquired consecutively after bolus injection of a contrast agent. The signal from vessels can be separated from backg...

This paper presents a case study on the reuse of the on chip debug infrastructures, present in most recent microprocessors, to execute real time fault injection campaigns. It is based on a debugger customized for fault injection and designed for maximum performance and flexibility. The developed methodology can be applied on the verification of dependable systems.

in the present study, the effects of intracerebroventricular (icv) injections of histamine, chlorpheniramine (h1-receptor antagonist) and ranitidine (h2-receptor antagonist) were investigated on visceral nociception induced by an intraperitoneal (ip) injection of acetic acid in rats. the latency time to the beginning of the first abdominal wall contraction (the first writhe) was recorded and th...

Previous methods for optimizing the scan times for PET transmission and emission scans under a total scan time constraint were based on linear non-statistical methods and used noise equivalent counts (NEC) criteria. The scan times determined by NEC analysis may be suboptimal when nonlinear statistical image reconstruction methods are used. For statistical image reconstruction, the predicted var...

The probability of faults occurring in the field increases with the evolution of the CMOS technologies. It becomes, therefore, increasingly important to analyze the potential consequences of such faults on the applications. Fault injection techniques have been used for years to validate the dependability level of circuits and systems, and approaches have been proposed to analyze very early in t...

of the Dissertation

0141-9331/$ see front matter 2010 Elsevier B.V. A doi:10.1016/j.micpro.2010.10.002 ⇑ Corresponding author. Tel.: +351 228340500; fax E-mail addresses: [email protected] (A.V. Fidalgo), mg [email protected] (G.R. Alves), [email protected] (J.M. Ferreir The rapid increase in the use of microprocessor-based systems in critical areas, where failures imply risks to human lives, to the environment or to expen...