copper–silver bimetallic strips were produced by cold roll welding process and were treated by diffusion annealing in the temperature range 250–800 ?c. the interface bonding strength was determined by bending and peeling tests, resistance, conductivity and micro hardness profiles were determined and microstructure in the interface region was observed by optical microscope. electrical resistance...

objectives: this study aimed to evaluate the effects of saliva contamination on the metallic bracket microleakage bonded with two moisture-tolerant bonding systems. materials and methods:  ninety freshly extracted premolar teeth were randomly divided into six groups of 15 with the following treatments: g1 (control): after acid etching, assure primer and assure adhesive were applied to non-conta...

Kara is a greek word that could be translated as head. In the Kara series of pieces, the musicians wear braincomputer interfaces (BCI) in order to capture their EEG waves while performing. The information from these waves is sent to a computer, where it is processed in order to generate a real-time score, computer generated sounds and a visual display of the data. A closed-loop is formed betwee...

Study evaluated the impact of a hybrid control on usability of a P300-based brain-computer interface (BCI) system that was designed to control an assistive technology software and was integrated with an electromyographic channel for error correction. The 11 participants in this pilot study included 8 healthy and 3 severely motor-impaired subjects. The three people with severe motor disability w...

Selective attention to visual-spatial stimuli causes decrements of power in alpha band and increments in beta. For steady-state visual evoked potentials (SSVEP) selective attention affects electroencephalogram (EEG) recordings, modulating the power in the range 8-27 Hz. The same behaviour can be seen for auditory stimuli as well, although for auditory steady-state response (ASSR), it is not ful...

In this paper we introduce the combined use of BrainComputer Interfaces (BCI) and Haptic interfaces. We propose to adapt haptic guides based on the mental activity measured by a BCI system. This novel approach is illustrated within a proof-of-concept system: haptic guides are toggled during a path-following task thanks to a mental workload index provided by a BCI. The aim of this system is to p...

Functional near-infrared spectroscopy (fNIRS) has become increasingly accessible in recent years, which allows this relatively lowcost and portable brain sensing modality for the application of braincomputer interfaces (BCI). Although there is a growing body of research on fNIRS-based BCI utilising users’ covert psychophysiological activity, there is comparably less research on active BCI, wher...

purpose: to report the clinical, histopathologic, microbiologic and confocal microscopic features of candida keratitis after deep anterior lamellar keratoplasty (dalk). patients and findings: the first patient presented with asymptomatic white to cream-colored interface deposits two months after dalk. confocal scan disclosed clusters of hyper-reflective fine granular deposits in the interface w...