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Cervicobrachial polymyositis presents with predominant or isolated proximal upper limb and neck weakness. It has marked female preponderance and affects neck flexors and extensors and trapezius and deltoid muscles severely. Wrist and finger extensors are also weakened. In a proportion of patients, it is associated with serological markers of autoimmune disorders and interstitial lung disease. In addition to serum creatine kinase, electromyography, and muscle biopsy, magnetic resonance imaging forms a noninvasive adjunct test in the diagnostic process. Because of the pattern of weakness, cervicobrachial polymyositis tends to be confused with other common neurological conditions having upper girdle weakness, leading to delay in the diagnosis of this potentially treatable condition.

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Quantum computers for the efficient simulation of physical systems are emerging today. Effect of Spin on Quantum Dots (QDs) paved the way for QCA. Quantum-dot cellular automata (QCA) have a simple cell as the basic element. The cell is used as a building block to construct gates and wires.Reversible logic has extensive applications in quantum Computing. Reversible logic is widely being considered as the potential logic design style for implementation in modern nanotechnology and quantum computing with minimal impact on physical entropy. Reversible gates such as Fredkin and DKG gates can be of great use for the implementation of the logic designs. Recent advances in reversible logic allow for improved quantum computer algorithms and schemes for corresponding computer architectures.In this paper, a design constructing the hybrid adder -Subtractor based on reversible logic gates as logic components using QCA is proposed. By using reversible logic gates instead of using traditional logic gates such as AND, OR, XOR, NOT, a Hybrid reversible Adder -Subtractor whose function is the same as the traditional Adder and Subtractor are designed and compared with the functioning of DKG gate based adder-subtractor. The simulation results shows that higher speed, smaller size and lower power consumption can be achieved with the proposed HAS system. GeneralTermDesign

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