نتایج جستجو برای: effective concentration

تعداد نتایج: 1035430  

Background: The purpose of the present study was to assess the efficiency of ultrasound/hydrogen peroxide processes and ultrasound/hydrogen peroxide/ZnO nanoparticles in the removal of blue cat 41 dye from aqueous solutions. Methods: ZnO nanoparticles were prepared using the hydrothermal method. Variables including pH, concentration of ZnO nanoparticles, initial dye concentration, concentratio...

Journal: :journal of health sciences and surveillance system 0
mansooreh dehghani research center for health sciences, department of environmental health, school of health, shiraz university of medical sciences, shiraz, iran; mahshid ghadami department of environmental health engineering, school of health, student research committee, shiraz university of medical sciences, shiraz, iran talat gholami department of environmental health engineering, school of health, student research committee, shiraz university of medical sciences, shiraz, iran marzieh ansari shiri department of environmental health engineering, school of health, student research committee, shiraz university of medical sciences, shiraz, iran zahra elhameyan department of environmental health engineering, school of health, student research committee, shiraz university of medical sciences, shiraz, iran mohammad reza javaheri department of environmental health engineering, school of health, student research committee, shiraz university of medical sciences, shiraz, iran

background: recently, there has been a great concern about the consumption of dyes because of their toxicity, mutagenicity, carcinogenicity, and persistence in the aquatic environment. reactive dyes are widely used in textile industry. advanced oxidation processes are one of the cost-effective methods for the removal of these dyes. the main aims of this study were determining the feasibility of...

ژورنال: مجله دندانپزشکی 2017

Background and Aims: Dental caries is an infectious disease transmitted by multiple factors in the mouth and one of the most common chronic diseases in the world that requires a lot of treatment expenses. The aim of this study was to evaluate the effect of fluoride 0.2% and Fuchs mouthwash (a combination of xylitol and fluoride 920 ppm) against two bacterial growths (Streptococcus mutans and ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه دریانوردی و علوم دریایی چابهار - دانشکده علوم دریایی 1393

با افزایش تعداد سویه های باکتریایی مقاوم به آنتی بیوتیک های مختلف و قیمت بالای برخی آنتی بیوتیک ها نیاز به داروهای گیاهی موثر، در دسترس و ارزان احساس می شود. این مطالعه به منظور مقایسه اثرضدباکتریایی عصاره های قطبی و غیر قطبی دوره های مختلف رویشی گیاه اسپند (peganum harmala) بر روی باکتری های آئروموناس هیدروفیلا (aeromonas hydrophila)، فتوباکتریوم دامسلا (photobacterium damsela) و لاکتوکوکوس گا...

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