The purpose of this paper is to improve the output impedance of a current source used for Electrical Impedance Tomography (EIT) by using a Negative Impedance Converter (NIC). A Monopolar Howland Current Source(MHCS) and NIC circuits were implemented and then the output impedance was measured by a Data Acquisition (DAC) board of 12 bits resolution. A resistive load was used for investigating the...

Acute intraperitoneal (i.p.) administration of N(G)-nitro-L-arginine (NNA, 10, 20 and 40 mg/kg), a non-selective nitric oxide synthase (NOS) inhibitor, significantly and dose-dependently decreased the incidence of convulsions induced by i.p. nicotine (NIC) in mice, whereas 7-nitroindazole (7NI, 50 and 100 mg/kg i.p.), a selective neuronal NOS inhibitor, had a proconvulsant effect. Aminoguanidin...

TEG is a new methodology for point-to-point messaging developed as a part of the Open MPI project. Initial performance measurements are presented, showing comparable ping-pong latencies in a single NIC configuration, but with bandwidths up to 30% higher than that achieved by other leading MPI implementations. Homogeneous dual-NIC configurations further improved performance, but the heterogeneou...

BACKGROUND To improve neurointensive care (NIC) and outcome for traumatic brain injury (TBI) patients it is crucial to define and monitor indexes of the quality of patient care. With this purpose we established the web-based Uppsala TBI register in 2008. In this study we will describe and analyze the data collected during the first three years of this project. METHODS Data from the medical ch...

A Nicaraguan population of Spodoptera frugiperda multiple nucleopolyhedrovirus, SfMNPV-NIC, includes fast-killing genotypes with deletions in the egt region. Four bacmid based recombinants were constructed to determine the role of egt in this phenotype. SfdelF bacmid encompassed the deletion found in the NIC-F genotype. Sfdel3AP2 bacmid was constructed using the deletion reported in SfMNPV-3AP2...

BACKGROUND Although durable clinical outcomes have been reported, arterial repair after paclitaxel-coated nitinol drug-eluting stent (Zilver PTX) implantation in the superficial femoral artery (SFA) remains unclear. METHODS AND RESULTS Angioscopic evaluation was performed in SFA intra-stent surfaces 80±29 (range, 49-135) days or 84±18 (range, 52-112) days following Zilver PTX (20 stents in 10...

Orexin/hypocretin-containing neurons in lateral hypothalamus (LH) are implicated in the neurobiology of nicotine addiction. However, the neuroanatomical relationships between orexin-neurons/nerve fibers and nicotine-activated cells within the reward-addiction neurocircuitry is not known. In the present study in mice, we first used c-Fos immunohistochemistry to identify CNS cells stimulated by a...

By a retinal prosthesis, the researchers have been able to stimulate a limited number of neurons (around 100) by biphasic current stimulus to reproduce an image spatially by multiplexing technique. For functional restoration of sight (visual acuity 20/80), we are to stimulate at least 2500 neurons/mm². We are far behind that target. The time required by biphasic current stimulus, the sequential...

BACKGROUND Enrollment in cardiac rehabilitation (CR) after coronary artery bypass graft (CABG) surgery is suboptimal (25%-30%). OBJECTIVES The purpose of this study was to examine the effect of a nurse-initiated telephone call (NIC) on attendance at a CR intake appointment. METHODS By using a retrospective cohort design, data were collected on 3536 patients who underwent CABG between April ...

Objective To identify and validate interventions/activities developed by a nursing team in a Brazilian pediatric unit. Method A descriptive, cross-sectional, and observational study was developed in the pediatric clinic of the university hospital of University of São Paulo, São Paulo, Brazil. It was organized in the following stages: identifying activities carried out by the team (from records ...