Design and construction of a stable current supply with protection circuits are described. The reported circuit provides a high-stable and high-level current variable from 0.5-1.2 A with the protect ion circuits to prevent over load current, voltage and off-range temperature operation. A detailed analysis of the circuit parameters is given and the time behaviors of the load voltage/current and ...

background: despite the development of pediatric post-operative pain management and use of analgesic/narcotic drugs, post-operative pain remains as a common problem. some studies suggested, the most effective approach to controlling immediate post-operative pain may include a combination of drug agents and non-drug methods. the aim of this study was to investigate the effect of music therapy on...

The biofilm-electrode reactor coupled with sulfur autotrophic denitrification process (BER-SAD) was used to remove nitrate in groundwater, and the effect of current intensity on characteristics explored. Current had a great influence process, maximum removal efficiency 99.9% lowest nitrite production were gained under optimum density 100 mA. Moreover, accumulation concentration SO 4 2- increase...

Transcranial direct current stimulation (tDCS) has been shown to modulate neuroplasticity. Beneficial effects are observed in patients with psychiatric disorders and enhancement of brain performance in healthy individuals has been observed following tDCS. However, few studies have attempted to elucidate the underlying molecular mechanisms of tDCS in the brain. This study was conducted to assess...

BACKGROUND Although the intensity of neurostimulation (i.e., charge) is a product of current intensity and pulse duration, the effects of the latter on the amplitude of evoked response and subjective discomfort are unknown. Therefore, the authors investigated the effects of current intensity and pulse width, and their interaction with electrode placement and polarity, on force translation (FTR)...

Touch is one of the five senses designed by nature for survival. ‘Touch’ may (partially) be characterized as a sensory operation for measuring texture and softness of an object by mechanical contact. We propose to design, fabricate, study and develop, a novel touch sensor made from nanoparticles with broad range of other applications such as, ultrasound medical imaging/diagnostics, smart materi...

The photoconductive response of single-walled carbon nanotubes (SWNTs) has been studied under CW illumination in the NIR (900 – 1800 nm) and far-IR (9-10 μm) range. SWNTs were coated onto patterned gold electrodes with spacing which was varied from 5 to 300 nm. SWNT samples exhibit absorption NIR bands that are typical for semiconducting nanotubes with a diameter distribution of 0.8 – 1.1 nm an...

The reliability of electroluminescence from metal–oxide–silicon ~MOS! tunneling diodes was improved by the incorporation of deuterium. The deuterium was incorporated by the deuterium prebake and the postoxide deuterium annealing. At constant current stress of 100 mA, a deuterium-treated n-channel MOS tunneling light-emitting diode shows that the integrated light emission intensity increases sli...