THz radiation detection using FET devices has attracted increasing attention lately. In this paper, we further study a simulated model of FET rectification detection in short channel length. To achieve this, both physics-based analytic model and a detailed TCAD simulation were contacted and compared. The analytical model provided detailed dependence of the response on the channel length below the extension length of the radiation. However, the simulation results were validated by comparison with the experimental data to confirm the validity of the theoretical model. These results present a new model of rectification for short channel lengths and its dependence on the extinction of AC signal through the channel.
β-Thalassemias are due to β-globin gene mutation leading to the absence or reduction of β-globin chains formation. Numerous studies are showing the rising of oxidative stress in β-thalassemia major patients. The study aims to evaluate the effects of N-acetylcysteine (NAC) on total oxidant status and Hb levels in children with β-thalassemia major. This study is a randomized clinical trial in the department of pediatrics, Beni-Suef University during the period between May 2019 and October 2019. The subjects of the study were beta-thalassemia major, the study was conducted on 44 patients that were divided into two groups, 22 patients took NAC at a dose of 10 mg/kg (solvymist syrup or, NAC sachet) orally, for 3 months, and the second group as a non-treatment group. Article results show a significant increase in HB for Medicine Updates Faculty of medicine October 2020,volume 3, issue 3 https://muj.journals.ekb.eg
Introduction: Vitiligo is an acquired hypomelanotic disorder characterized by circumscribed depigmented macules or patches resulting from loss of functional melanocytes and of melanin from the epidermis. The affection of extracutaneous melanocytes in some vitiligo patients suggests that systemic immunological reactions directed at pigment cells might play a role in the development of the disease. Aim of the work: Evaluation of the cochlea and the auditory nerve in vitiligo patients. Patients and Methods: Cross sectional clinical study included total number of 60 subjects were examined. All subjects included were subjected to the following procedures: Full history taking, clinical examination, Basic audiologic evaluation, Transient Evoked otoacoustic emissions (TEOAEs), Distortion Product Otoacoustic Emission (DPOAE), Auditory Brainstem Response test (ABR). Results: The ABR finding concluded that melanin play a significant role in establishment and maintenance of structure and function of the auditory system and may modulate the transduction of auditory stimuli by the inner ear. Conclusion: TEOAE and DPOAE are sensitive tests for detecting cochlear dysfunction before symptoms become manifested as the TEOAE and DPOAE were impaired in 35% and 35%of the ears with normal hearing.
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