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Register a new userتصميم وبناء جهاز رديف في التشخيص الطبي يعتمد على قياس نسبة غاز NH3 في هواء الزفير
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يوسف يوسف
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جرى في هذا العمل تحسين منظومة تحليل طيفي تعتمد على الديودات الليزرية القابلة للتوليف (TDLAS)، حيث تم ربطها بالحاسوب ثمّ تحصيل البيانات ومعالجتها آلياً باستخدام البرمجة في MatLab، وكذلك تحسين أداء حجرة القياس من النوع Multipass White Cell، حيث طُلي السّطح الداخلي للحجرة بشمع البارافين ممّا قلل من امتزاز غاز النشادر. تم توظيف هذه المنظومة في دراسة تركيز غاز النشادر [NH3] في هواء الزفير لمجموعة مكونة من 20 شخصاً من المتطوعين الأصحاء في حالتي الصّيام والإفطار، ومجموعة مكونة من 36 شخصاً من المرضى المصابين بالفشل الكلوي المزمن.
In this research work, the performance of the measurement system (TDLAS) has been improved, it was connected to the computer for acquisition and processing data using the programming language MatLab. The internal surface of the cavity was coated by paraffin wax, adsorption is significantly lowered. This system has been employed to measure the concentration of ammonia in exhaled breath for 20 healthy volunteers in two cases (fasting and non-fasting), and 36 volunteers with chronic renal disease (before hemodialysis).
References used
محمد دلّه ,عقيل سلّوم . (2016) . "بناء منظومة تحليل طيفي ليزري لقياس تركيز بعض الغازات الصناعية" . المعهد العالي للعلوم التطبيقية والتكنولوجيا
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