University of Chemical Technology and Metallurgy

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Browsing University of Chemical Technology and Metallurgy by Author "Abbasi Q.H."

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    Features of physiological tremor in diabetic patients
    (2019-10-01) Aljihmani L.; Abbas H.; Zhu Y.; Mehta R.K.; Sasangohar F.; Erraguntla M.; Lawley M.; Abbasi Q.H.; Qaraqe K.
    In this paper, we estimate the effect of fatigue on physiological tremors in adults suffering from diabetes. We used a simple, wearable accelerometer to collect the acceleration data from 5 diabetic subjects with varying physical activity levels. Fatigue was induced via an intermittent submaximal isometric handgrip protocol, normalized for individual grip strength, until voluntary exhaustion. The overall results presented here show that the physiologic tremors in the range of 10-14 Hz are most noticeable under fatigue.
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    On the existence of terahertz plasmons in two-dimensional semiconductor heterostructures
    (2019-09-01) Abbas H.T.; Aljihmani L.; Abbasi Q.H.; Qaraqe K.A.
    Plasmons existing along a semiconductor heterostructure found in a high electron mobility transistor are studied. With the help of the electronic properties of group III-V semiconductor materials, a multilayer structure is described using an equivalent transmission line network. The existence of surface waves is investigated using the transverse resonance method, and it is established that the complex conductivity of the two-dimensional electron gas with a negative imaginary part yields surface plasmons in the terahertz frequency domain.