136 research outputs found

    Five Quantum Algorithms Using Quipper

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    Quipper is a recently released quantum programming language. In this report, we explore Quipper's programming framework by implementing the Deutsch's, Deutsch-Jozsa's, Simon's, Grover's, and Shor's factoring algorithms. It will help new quantum programmers in an instructive manner. We choose Quipper especially for its usability and scalability though it's an ongoing development project. We have also provided introductory concepts of Quipper and prerequisite backgrounds of the algorithms for readers' convenience. We also have written codes for oracles (black boxes or functions) for individual algorithms and tested some of them using the Quipper simulator to prove correctness and introduce the readers with the functionality. As Quipper 0.5 does not include more than \ensuremath{4 \times 4} matrix constructors for Unitary operators, we have also implemented \ensuremath{8 \times 8} and \ensuremath{16 \times 16} matrix constructors.Comment: 27 page

    Design and Development of HiperLAN/2 WLANs Based Multiwavelet Signals using Adaptive Antennas Algorithm

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    In this paper a simple adaptive antenna idea, consisting of multiple independent omni directional receiver antennas and the ZF (Zero Forcing) algorithm for the adaptive signal processing, is applied to the HiperLAN/2 WLANs based Orthogonal Frequency-Division Multiplexing OFDM, Discrete Multiwavelet Transform (DMWT) and its performance is evaluated at link level. MATLAB modeling demonstrated that the performance with adaptive receiver antennas has a remarkable degradation in the packet (PDU or PSDU) error rate (PER) compared to without using adaptive receiver antennas due to the considerable channel models. With adaptive receiver antennas, Carrier-to-Noise Ratio (C/N) improvement compared to without using adaptive receiver antennas is achieved. The performance of the system can more improve by increasing the number of antennas at receiver. Keywords: Network, HiperLAN/2, Adaptive, OFDM, DMWT, IDMWT

    Oscillations of Third Order Nonlinear Neutral Differential Equations with Positive and Negative Coefficients

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    In this paper oscillation criterion is investigated for all solutions of the third-order non linear neutral  differential equations with positive and negative coefficients

    EXPRESSION OF CANCER STEM CELL MARKER OCTAMER-BINDING TRANSCRIPTION FACTOR 4 IN HIGH-GRADE TRANSITIONAL CELL CARCINOMA

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    Objectives: The objectives of this study were to provide an outlook of urothelial carcinoma through the immunohistochemical expression patterns of octamer-binding transcription factor 4 (OCT4) in high-grade transitional cell carcinoma (TCC) of the urinary bladder. Methods: A total number of 60 tissue samples were collected for the study. Patients were divided into two groups according to the pathological diagnosis of the bladder tissue, Group A: 30 cases with high-grade TCC of the bladder and Group B: 30 cases with apparently normal bladder tissue. Tissue immunohistochemical analysis was applied to investigate the expression patterns of cancer stem cell (CSC) markers OCT4 in bladder samples. Results: OCT4 was positive in 80% of specimens of Group A and 3.3% in specimens of Group B. The association between OCT4 marker result and certain histopathological features in high-grade group: Positive OCT4 result was found in patients with inflammation and necrosis (90.9%) with a significant association (p=0.013). Regarding muscular invasion, we noticed that 87.5% of patients with muscular invasion showed positive OCT4 marker result with a significant association (p=0.039) between OCT4 marker result and muscular invasion. As well, OCT4 marker was highly sensitive and specific (sensitivity=66.7%, specificity=96.7%, and accuracy=76.7%). Conclusion: There was a significant expression of CSC OCT4 in high-grade TCC, OCT4 can be considered as a key regulator of tumor progression, aggressive behavior, and metastasis

    Effect of Bond Thickness on Lifetime of Adhesive Joints

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    The aim of this research was to study the effect of bond thickness on the fracture energy and the lifetime of an adhesively bonded system and develop a model to predict the lifetime of adhesive joints. An approach based on fracture mechanics was employed to assess aluminum/epoxy bond lifetime. An experimental investigation was carried out using double cantilever beam (DCB) specimens with various bond thicknesses under mode 1. This study describes an approach to predict the rate of crack propagation using Paris\u27 power law. The approach used elevated temperatures to accelerate the crack propagation under constant loads. The elevated temperatures were kept below the glass transition of the adhesive. The general idea was to apply a constant load below the critical value to allow for measurable slow crack propagation. The fracture energy of the bonded joints was evaluated using both simple beam and beam on elastic foundation analyses. A simple model was proposed to predict the variation of the two kinetic parameters of Paris\u27 law as a function of bond thickness. A model was developed, which would enable crack propagation to be modeled and hence the lifetime of adhesive joints to be predicted

    Spectrophotometric method for the determination of Captopril in pharmaceutical formulations

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    A simple, rapid and sensitive spectrophotometric method has been developed for the determination of captopril in aqueous solution. The method is based on reaction of captopril with 2,3-dichloro 1,4- naphthoquinon(Dichlone) in neutral medium to form a stable yellow colored product which shows maximum absorption at 347 nm with molar absorptivity of 5.6 ×103 L.mole-1. cm-1. The proposed method is applied successfully for determination of captopril in commercial pharmaceutical tablets

    Antioxidant Categories and Mode of Action

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    Oxidative stress has received a considerable scientific attention as a mediator in the etiology of many human diseases. Oxidative stress is the result of an imbalance between free radicals and antioxidants. Cells can be damaged by free radicals that are considered to play a main role in the aging process and diseases development. Antioxidants are the first line of defense against the detrimental effects of free radical damage, and it is essential to maintain optimal health via different mechanisms of action. Types of antioxidants range from those generated endogenously by the body cells, to exogenous agents such as dietary supplements. Antioxidant insufficiency can be developed as a result of decreased antioxidant intake, synthesis of endogenous enzymes, or increased antioxidant utilization. To maintain optimal body function, antioxidant supplementation has become an increasingly popular practice through improving free radical protection. In this chapter, we first elucidate the oxidative stress, and then define the antioxidant and its categories. Finally, introduce the antioxidants mode of actions for cell protection from free radicals
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