نتایج جستجو برای: شاخص خطر هدف thq
تعداد نتایج: 332432 فیلتر نتایج به سال:
در این تحقیق، به شاخص جدیدی بنام شارپ تجدید نظر شده (r-sharp) مبتنی بر ارزش در معرض خطر از جمله شاخص های قابل قبول جهت ارزیابی عملکرد شرکت های فعال دربازار سرمایه است، پرداختیم و سپس این شاخص را با روش شارپ مقایسه نمودیم. در شاخص r-sharp از مفهوم ارزش در معرض خطر(value at risk) استفاده شده است. نتایج این تحقیق بیانگر آن است که محاسبه var با روش garch با توجه به عدم وجود ناهمسانی واریانس در سری ...
Although fish, crustacean, and shellfish are significant sources of protein, they are currently affected by rapid industrialization, resulting in increased concentrations of heavy metals. Accumulation of heavy metals (V, Cr, Mn, Ni, Cu, Zn, As, Se, Mo, Ag, Cd, Sb, Ba, and Pb) and associated human health risk were investigated in three fish species, namely Ailia coila, Gagata youssoufi, and Mast...
− Bu çalışmada kızartılarak tüketime hazır hale getirilen bazı balık türlerindeki metal düzeylerinin belirlenmesi, elde edilen değerlerin Ulusal ve Uluslararası standartlarla karşılaştırılması insan sağlığı riskinin değerlendiril-mesi amaçlanmıştır. Metal tayininde Yüksek Çözünürlüklü Sürekli Işın Kaynaklı Alevli Atomik Absorbsiyon Spektrofototometrisi (HR CS-FAAS) kullanılmıştır. Orta Karadeni...
این تحقیق درسال 1387 انجام گردید. 40 نمونه ماهی سفید از تعاونی پره فرح آباد ساری و 22 نمونه کفال پوزه باریک از حوزه جنوب شرقی دریای خزر جمع آوری گردید. آماده سازی نمونه های ماهی با روش استاندارد انجام شد. نمونه ها با دستگاه جذب اتمی (مدل thermo, m5) آنالیزگردید. نتایج نشان داد که فلز روی با مقدار3/196±3/415 میکروگرم بر گرم وزن خشک بالاترین مقدار را در عضله ماهی کفال دارا بود. علاوه برآن فلز مس ...
Honghu Lake is the seventh largest freshwater lake in China, and fishery is one of the most important economic sources for local inhabitants. Toxic metal concentrations in muscle of all analyzed fish species captured from Honghu Lake were generally below China standards, except Cr in crucian carp. The average concentrations were decreased in the following order, Zn (14.65 mg/kg) > Cr (1.25 mg/k...
Thirteen Jamaican-grown food crops - ackee (Blighia sapida), banana (Musa acuminate), cabbage (Brassica oleracea), carrot (Daucus carota), cassava (Manihot esculenta), coco (Xanthosoma sagittifolium), dasheen (Colocasia esculenta), Irish potato (Solanum tuberosum), pumpkin (Cucurbita pepo), sweet pepper (Capsicum annuum), sweet potato (Ipomoea batatas), tomato (Solanum lycopersicum) and turnip ...
This study evaluated the essential and non-essential elements in lettuce cultivated on a rooftop urban garden metropolitan region of São Paulo. In addition, human health risks associated with potentially toxic metals based estimated daily intake (EDI), target hazard quotient (THQ), possible sources heavy metal contamination by multivariate statistical were analyzed. The lettuces contain macronu...
In the residential area of the North Coast of the Persian Gulf, consumption of fish is a possible source of exposure to heavy metals and other pollutants, all of which may act as potential risk factors for serious syndromes and fatal diseases. Health risks associated with Pb, Cd, and Hg were assessed based on the target hazard quotients (THQ), which can be derived from concentrations of heavy m...
Aim: Active mining in Kilembe copper mine, Kasese district, Uganda ended about four decades ago. However, various health problems are believed to be from the effect of activities that took place area. In this study therefore, we quantified concentration trace metals: chromium (Cr), cadmium (Cd), zinc (Zn), iron (Fe), lead (Pb), arsenic (As) and (Cu) cabbages tomatoes grown area assessed risks c...
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