Hybrid inline fiber interferometers gained attention recently especially in the building control and detection fields due to their hybrid multi-path interferences, multi-parameter measurements, high sensitivity, and high precision. This work used etched multimode fiber (MMF) to introduce a novel medical gas pipeline leakage detector based on hybrid Fabry-Perot/Mach-Zehnder inline fiber interferometer (FP-MZI). The hybrid FP-MZI of this work consisted of two cascaded identical fiber Bragg gratings (FBGs) spliced to coreless fiber sandwiching the MMF. Four samples of different MMF lengths and sizes were used as sensing heads in the detection measurements. Self-imaging and phase-equations of the proposed interferometer were solved analytically to select the required length; then COMSOL software was used to ensure the occurrence of the required interference along the proposed interferometer at the designed wavelength. Two medical gas sources; air compressor and high-pressure gas cylinder, attached to two pipelines of size 15×0.7, and 12×0.6 mm was used to provide the required pressure. Gas leak was introduced to the pipes manually through controlled valves and measured using the proposed hybrid FP-MZI. Both constant and variable gas flowrates was investigated with variable gas pressures. The obtained sensitivity was ranged from 0.17-20.9 pm/bar for all of the investigated cases.

تهدف هذه الدراسة إلى معرفة أكثر العينات سريرية وطرق التشخيص في داء الليشمانيات الجلدي المزمن (CCL). تم أخذ عينات من اللطاخة ، سائل الشفط ، وفلتر الورق ، من 44 آفة جلدية من الحالات المشتبه فيها بالـ CCL في بعض مستشفيات بغداد ، وتمت مقارنتها باستخدام الفحص المجهري ، والثقافة ، والأساليب الجزيئية. تم فحص عينات من المرضى الإكلينيكيين الذين أظهروا الخلع. PCR 95.45٪ (42/44)، والفحص المجهري 72.7٪ (32/44)، والثقافة 27٪ (12/44). وخلال الدراسة، المنتجات في KDNA -PCR، L.tropica و L. الكبرىمراقبة العصابات المتوقعة 780 و 650 نقطة أساس ، وورقة الترشيح العينات السريرية الأكثر فعالية من الآفة. وفي الختام ، فإن فحوصات PCR المستندة إلى اختبارنا على زيادة سرعة وحساسية تشخيص الحمض النووي الريبي النووي مهم جداً لتحديد الأنواع ( L. tropica و L. major ).

No abstract

The current study included isolating and diagnosing the cutaneous leishmaniasis parasite from patients with Baghdad boil and the reviewers of Al Hussein Teaching Hospital in Thi-Qar province for the period from November to December 2016 and then studying the effect of aqueous extract of the plant Nigella sativa in the vitality of isolated parasite in vitro. Through the results, the isolated parasite was diagnosed depend on lesions appearance and characterization then confirm the diagnosis by KDNA- PCR which revealed that leishmania spp. was Leishmania major . In this study three different concentrations from aqueous extract of the Nigella sativa plant were used (50, 100 and 150 mg / ml), the parasite growing in NNN medium (3 replicates used)It was observed that the percentage of parasite destruction increased with prolong exposure time of the extract and increased concentration of the extract, results also exhibited that the percentage of the destruction was 100% after four hours of exposure to the concentration of 150 mg / ml which was the highly killed percentage compared to control, which was 5. 98%.