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Memristor-based quinary half adder

This paper theorizes the possibilities of generalizing a memristor based ternary adder circuit, to a memristor based multi-valued logic adder. The proposition tries to achieve the theoretical advantages of processing different numbering systems, increasing the density, and decreasing the processing time, by utilizing the memristor properties and dynamics. This is done using a memristor cell based

Circuit Theory and Applications

Heating and Freezing Injury to Plant Tissues and Their Effect on Bioimpedance: Experimental Study

Electrochemical Impedance Spectroscopy (EIS) has been used as a technique for the assessment of food attributes. This paper discusses the effect of injuries caused by heating and freezing treatments to plant's bioimpedance. Unlike other studies to these kinds of injuries, experiments are carried out on the whole fruit using non-invasive electrodes keeping the plant tissues unharmed. Moreover, one

Circuit Theory and Applications

Engineered Nanomaterials as Potential Candidates for HIV Treatment: Between Opportunities and Challenges

Nanomaterials have received considerable attention due to their unique properties; they have high surface area compared to volume ratio, giving them superior chemical, optical and thermal characteristics. Nanomaterials have also both diagnostic and therapeutic applications. In this mini review, we are highlighting valuable data about human immunodeficiency virus (HIV), its relationship with cancer

Energy and Water

Design and application examples of CMOS fractional-order differentiators and integrators

Reduced complexity CMOS fractional-order differentiator and integrator building blocks are introduced in this work, based on 2 nd -order integer-order transfer function approximations. These blocks are then used for implementing fractional-order filters as well as a Leaky-Integrate-and-Fire Mihalas-Niebur neuron model. Cascading 1 st and 2 nd -order blocks to obtain 5 th -order integer-order

Circuit Theory and Applications

A study on the feasibility of producing polylactic acid from cotton and coffee waste in Egypt

The amount of solid waste is growing In Egypt. It is estimated to be 20 million tons annually according to the Ministry of environment forecasts. The typical competence of collection in urban areas signifies 40 – 80%, although the middling proficiency of assortment processes and transport in rustic areas signifies 40 % which is considered hazardous for communal health and environment deprived of

Energy and Water

Numerical simulation of Oldroyd-B fluid with application to hemodynamics

Oldroyd-B viscoelastic fluid is numerically simulated using the stabilized Galerkin least squares finite element method. The instabilities due to the connective nature of the Oldroyd-B model is treated using the discrete viscous elastic split stress method. The model is used to study the behavior of the flow of blood through an abdominal aortic segment. The results show that the viscoelastic

Energy and Water

On a class of quadrature phase oscillators using differential pairs

A new class of quadrature phase oscillators based on cross-coupled differential pairs is introduced. This class contains eight possible circuits which produce four output voltages with phase differences of ±π or ±π/2, depending on the choice of output node, and does not require balanced differential-pair loads. Phase error analysis is provided along with experimental and simulation results using

Circuit Theory and Applications

The minimax approach for a class of variable order fractional differential equation

This paper introduces an approximate solution for Liouville-Caputo variable order fractional differential equations with order 0

Circuit Theory and Applications

On the modeling of dispersive transient photocurrent response of organic solar cells

The current methods used for estimating the electrical parameters of organic solar cells (OSC) from time-domain measurements are based on integer-order impedance models. Meanwhile, in the frequency-domain, the adopted circuit models usually contain a constant phase element which is known to capture effectively the fractional-order dispersive behavior of these devices. Therefore, inconsistency

Circuit Theory and Applications

Generic Hardware of Fractional Order Multi-Scrolls Chaotic Generator Based on FPGA

Exploring the implementation of fractional calculus is essential to be adequately used in several applications. This paper introduces an FPGA design methodology of fractional order multi-scrolls chaotic system. Hardware resources comparison proves the efficiency of the proposed method. The designs are simulated using Xilinx ISE 14.7 and realized on FPGA Xilinx Artix 7. Different interesting

Circuit Theory and Applications