zinc is a substance that regulates neural excitability by binding whit sodium channel and potassium channel. the efficiency of free zinc ion, make down the neural survival rate, reduced the peak amplitude of na+ and make depolarization na channel, increased the peak amplitude of transition outward k+ currents and delayed rectifier. also it is an effective blocker of one subtype of tetrodoxine (...

The scaling of device technologies poses new challenges, not only in circuit design, but also in device modeling, especially because of the short-channel effects and the emergence of novel phenomena like ballistic transport. Nonetheless, it enables the design of ultra low-power analog and Radio Frequency (RF) circuits by allowing to push the operating points into moderate and eventually weak in...

The Triple gate FinFET architecture has emerged as a viable contender for the ultimate scalability of CMOS devices. FinFET structure offers better control over device leakage currents than the conventional bulk MOSFET structure. In this paper, we present the 6 transistor (6T) SRAM cell implementation using the 22 nm gate length FinFET devices modeled using a 3-D device simulator. The performanc...

Abstract – Numerical simulations of In0.52Al0.48As/In0.7Ga0.3As/InP HEMTs have been carried out with a 2D/3D-hydrodynamic model. The investigation of double gate and striped-channel devices with the same layer structure results in an increase of cut-off frequencies. At a reduce of gate lengths down to 5 nm short channel effects becomes important in particular for the single gate device. Transis...

Based on the subthreshold region model described in Paper I [Cho et al., a continuous drain current model with a variation of channel doping concentration (N A) for symmetric double gate metal-oxide-semiconductor field-effect transistor is presented. Here, the inversion region drain current model is derived by solving the long-channel 1D Poisson's equation due to the strong screening effects by...

This paper investigates the Multi-band OFDM (MB-OFDM) based physical (PHY) layer proposal for IEEE 802.15.3a working group on short-range high data-rate Ultra-wide-Band (UWB) communications. An overview of the MB-OFDM PHY layer architecture with its various parameters is presented and the optimal choice of critical parameters is discussed. Next, we derive the theoretical un-coded Bit Error Rate...

BACKGROUND This report presents 13 years of experience with vasodilator therapy for primary pulmonary hypertension (PPH) in children. Two eras were involved: between 1982 and 1987, oral calcium channel blockers were the only agents available for long-term therapy; after 1987, prostacyclin (PGI2) has been available for long-term intravenous use. METHODS AND RESULTS Seventy-four children underw...