تراکئوتومی در بیماریهای مخ و ریه

بررسی و مطالعه بافت ریه و پلور در بیماریهای ریوی

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مقایسه آسم و سایر بیماریهای مزم انسدادی ریه

روش درمان بیماریهای ریه با درمان تنفسی تنفس پنی سیلین

Degenerate Four Wave Mixing in Photonic Crystal Fibers

In this study, Four Wave Mixing (FWM) characteristics in photonic crystal fibers are investigated. The effect of channel spacing, phase mismatching, and fiber length on FWM efficiency have been studied. The variation of idler frequency which obtained by this technique with pumping and signal wavelengths has been discussed. The effect of fiber dispersion has been taken into account; we obtain th...

ائروسل تراپی در بیماریهای ریه

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بررسی شیوع علائم بیماریهای تنفسی و اختلالات عملکرد ریه در مواجهه شغلی با فرمالدئید

Background and aimsThe main purpose of this study was to assess the acute and chronic effects of occupational exposure to low levels of formaldehyde on respiratory health.MethodsThis historical cohort study was conducted at a local melamine-formaldehyde resin producing plant. The study population consisted of seventy exposed and 24 non-exposed (referent) employees. In this study, a questionnair...