65 research outputs found

    REGIONAL DEVELOPMENT AND THE ROLES OF INSTITUTIONS

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    The internationally accepted definition of sustainable development is referring at the obtaining the satisfaction the needs of the present without compromising the ability of future generations to meet their own needs. Sustainable development is a means tglobalization, crisis, development, institutions.

    Electrochemical Sensing with Metal Oxides

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    The effective sensing of hydrogen peroxide is important for a variety of reasons. It can be utilized as a diagnostic tool for diseases like asthma; also, the sensing can be utilized in pharmaceutical and food production for quality control. The use of silver oxide nanoparticles with varying morphologies has not been investigated as a sensing agent for hydrogen peroxide in the past. The particles’ properties and ability to oxidize and reduce hydrogen peroxide suggest that they will be effective to create a sensitive sensor. The silver oxide particles were prepared through chemical reduction using varying molar ratios of reactants. The varying ratios created three different particle shapes: hexapod, octahedral, and cubic. A three electrode system was to evaluate electrochemical properties, and the working electrode was coated with the silver oxide particles. Current response, detection limit, and electrical impedance spectroscopy (EIS) tests were done to gauge the effectiveness of the sensor, and X-ray diffraction (XRD), Zeta potential, and scanning electron microscopy (SEM) were performed to characterize the particles. The use of these particles has shown positive results for a sensor, with very high sensitivity and a good detection limit. The hexapods gave more response than the octahedral which gave more response than the cubic particles. The low stability suggests a new coating method must be investigated, but overall, the very high sensitivity of the silver oxide particles would be useful for aforementioned applications of hydrogen peroxide sensing

    Analysis and Evaluation of PUF-based SoC Designs for Security Applications

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    This paper presents a critical analysis and statistical evaluation of two categories of Physically Unclonable Functions (PUFs): ring oscillator PUF and a new proposed adapted latch based PUF. The main contribution is that of measuring the properties of PUF which provide the basic information for using them in security applications. The original method involved the conceptual design of adapted latch based PUFs and ring oscillator PUFs in combination with peripheral devices in order to create an environment for experimental analysis of PUF properties. Implementation, testing and analysis of results followed. This approach has applications on high level security

    A Novel PUF-Based Encryption Protocol for Embedded System On Chip

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    This paper presents a novel security mechanism for sensitive data stored, acquired or processed by a complex electronic circuit implemented as System-on-Chip (SoC) on an FPGA reconfigurable device. Such circuits are increasingly used in embedded or cyber systems employed in civil and military applications. Managing security in the overarching SoC presents a challenge as part of the process of securing such systems. The proposed new method is based on encrypted and authenticated communications between the microprocessor cores, FPGA fabric and peripherals inside the SoC. The encryption resides in a key generated with Physically Unclonable Function (PUF) circuits and a pseudorandom generator. The conceptual design of the security circuit was validated through hardware implementation, testing and analysis of results

    Modified Mohs Micrographic Surgery in Lentigo Maligna Treatment: A Series of Six Cases

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    The surgical approach to lentigo maligna is a challenge to dermatologists, given its clinical and histopathological particularities. Staged excision with paraffinembedded, permanent sections for histopathological evaluation of surgical margins is an effective treatment of lentigo maligna because it enables complete excision of the tumor, at the same time preserving maximum amount of healthy tissue. We report a case series of 6 patients diagnosed with lentigo maligna who underwent this procedure in our Institution and we describe the procedure we used. Complete excision of the tumors was achieved with one to three levels, with margins of excision ranging from 2 to 8 mm. There were no local recurrences at the median follow-up of 16 months, obtaining 100% cure rate with this technique. These are comparable with the margins and number of levels of excision described in previous case series reported in the literature. The technique described herein for the treatment of lentigo maligna provides excellent cure rates for this type of cutaneous malignancy notorious for its challenging managemen

    Modified Mohs Micrographic Surgery in Lentigo Maligna Treatment: A Series of Six Cases

    Get PDF
    The surgical approach to lentigo maligna is a challenge to dermatologists, given its clinical and histopathological particularities. Staged excision with paraffinembedded, permanent sections for histopathological evaluation of surgical margins is an effective treatment of lentigo maligna because it enables complete excision of the tumor, at the same time preserving maximum amount of healthy tissue. We report a case series of 6 patients diagnosed with lentigo maligna who underwent this procedure in our Institution and we describe the procedure we used. Complete excision of the tumors was achieved with one to three levels, with margins of excision ranging from 2 to 8 mm. There were no local recurrences at the median follow-up of 16 months, obtaining 100% cure rate with this technique. These are comparable with the margins and number of levels of excision described in previous case series reported in the literature. The technique described herein for the treatment of lentigo maligna provides excellent cure rates for this type of cutaneous malignancy notorious for its challenging managemen

    Underactive bladder - an underestimated entity

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    Introduction. The concept of underactive bladder is relatively new. Currently there is no generally accepted definition of this pathology. Diagnosis depends on urodynamic findings, and symptoms are usually rare and intricated with the symptoms of other urinary pathology. Matherials and methods. This review examines the current literature on underactive bladder regarding pathology, definition, diagnosis, current guidelines, and any further potential medical developments. Conclusions. Underactive bladder is a poorly understood pathologic condition. Only since 2002 has there been any consensus regarding the definition. The diagnosis relies only on urodynamics; clinical diagnosis is a challenge even for a consultant; and treatment does not seem to alleviate much of the suffering. This disease remains underrecognized and undertreated. More research is needed to identify less invasive diagnosis tools and treatment for this pathology

    Cochlear implant in a 10 months old patient

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    Otorhinolaryngology Clinic, Targu Mures Emergency Clinical County Hospital, Romania, The 6th International Medical Congress for Students and Young Doctors, May 12-14, 2016Introduction: World Health Organisation declares that over 5% of the global population, 32 million children included, suffer from disabling hearing loss, meaning a loss greater than 30 decibels in the better hearing ear in children. Objective: The purpose of this study is to present the case of the youngest bilateral cochlear implant receiver in Romania and the correlations between the imaging and surgical findings.Results: Both findings, the imaging and the surgical ones, were concordant, no pathological modifications were found that could have discomforted the cochlear implantation. Conclusion: This is the first case of an infant patient under 12 months suffering bilateral cochlear implantation in Romania, with activation of the implant after 7 weeks from implantation, and having a favourable outcome subsequent to the surgery

    Underactive bladder - an underestimated entity

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    Introduction. The concept of underactive bladder is relatively new. Currently there is no generally accepted definition of this pathology. Diagnosis depends on urodynamic findings, and symptoms are usually rare and intricated with the symptoms of other urinary pathology. Matherials and methods. This review examines the current literature on underactive bladder regarding pathology, definition, diagnosis, current guidelines, and any further potential medical developments. Conclusions. Underactive bladder is a poorly understood pathologic condition. Only since 2002 has there been any consensus regarding the definition. The diagnosis relies only on urodynamics; clinical diagnosis is a challenge even for a consultant; and treatment does not seem to alleviate much of the suffering. This disease remains underrecognized and undertreated. More research is needed to identify less invasive diagnosis tools and treatment for this pathology
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