8 research outputs found

    Gradient based vein Extraction Algorithm for

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    In Present days, Authentication by means of biometrics systems is used for personal verifications. In spite of having existing technology in biometrics such as recognizing the fingerprints, voice/face recognition etc., the vein patterns can be used for the personal identification. Finger vein is a promising biometric pattern for personal identification and authentication in terms of its security and convenience. Finger vein has gained much attention among researchers to combine accuracy, universality and cost efficiency. We propose a method of personal identification based on finger-vein patterns. An image of a finger captured under infrared light contains not only the vein pattern but also irregular shading produced by the various thicknesses of finger bones and muscles. The proposed method extracts the finger-vein pattern from the unclear image by using gradient feature extraction algorithm and the template matching by Euclidean distance algorithm. The better vein pattern algorithm has to be introduced to achieve the better Equal Error Rate (EER) of 0.05 % comparing to the existing vein pattern recognition algorithms

    Multiple myeloma: Report of a very rare case and review

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    Multiple myeloma consists of a clonal proliferation of plasma cells in the bone marrow, with varying degrees of differentiation. The disease is more frequently seen in men and the average age at diagnosis is about 60 years. The diagnosis is established by blood and urine examination and biopsy. Patients may present renal failure, bone pain, fatigue, recurrent infections and nervous system dysfunction. Oral manifestations may be the first sign of multiple myeloma, highlighting the importance of the dentist in the early diagnosis of the disease. This paper reports a case of multiple myeloma in a 72 years old male patient

    Vegetative Propagation of Azadirachta indica A. Juss (Neem) Through Cuttings: A Review

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    PROPAGAÇÃO VEGETATIVA DO NIM INDIANO (Azadirachta indica A. Juss) POR MEIO DE ESTACAS: UMA REVISÃO Azadirachta indica A. Juss (nim indiano) é uma importante espécie florestal que apresenta múltiplos usos. Hoje, o nim está recebendo o reconhecimento mundial por sua grande variedade de compostos bioativos. Considera uma herança biológica significativa, também é reconhecida como um dos presentes da natureza para a humanidade. Este trabalho tem como objetivo realizar uma revisão da literatura sobre os principais métodos científicos utilizados para se obter clones de Azadirachta indica por meio de propagação vegetativa, avaliado perspectivas atuais e as tendências futuras para a aplicação de novas técnicas de clonagem para a produção em grande escala. A literatura descreve métodos de tratamento (mergulhia), tipos de regulador de crescimento (IBA, NAA e IAA), tipos de estacas (madeira dura, madeira semiduro, madeira macia, folhas e mini estacas) e enraizamento (areia, solo, vermiculita e areia + solo + FYM) durante diferentes épocas (estação chuvosa, inverno e verão). A divulgação de tais técnicas podem minimizar os custos, encurtar as etapas de produção e, consequentemente, reduzir o tempo de cultivo em laboratório. Palavras-chave: Azadirachta indica, propagação vegetativa, estacas, auxina. ABSTRACT Azadirachta indica A. Juss (Neem) is one of the important multipurpose tree species. Today, neem is receiving worldwide recognition for its variety of bioactive principle components. Neem, being an important part of our biological heritage and is also recognised as one of nature’s gift to mankind.  This review aims to perform a literature review of the main scientific methods used to obtain clones of Azadirachta indica, such as the processes of vegetative (macro) propagation and present perspectives and future trends for the application of new cloning techniques aiming for large scale for plant production. The literature describes methods (dip treatment), types of plant growth regulator (IBA, NAA & IAA), types of stem cuttings (hard wood, semi hard wood, soft wood, leafy & mini cuttings) and planted in rooting media (sand, soil, vermiculite & sand+soil+FYM) during different season (monsoon, winter & summer). The improvement aiming the disseminating such techniques can minimize costs, shorten production stages and consequently, reduce the cultivation time in the laboratory. Keywords: Azadirachta indica, vegetative propagation, cuttings, auxin. DOI: http://dx.doi.org/10.14583/2318-7670.v02n04a1
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