منابع مشابه
Exploring the safety of nanoparticles in Australian sunscreens
Engineered nanoparticles are now well recognised to possess a range of apparently unique and as yet under-researched toxicities Safety concerns about such nanoparticles in cosmetics such as sunscreens are fuelled by consideration of factors such as their size, high mobility in the body and unusual reactivities. Yet, published research relied upon by safety regulators suggests there are no signi...
متن کاملTiO2 Nanoparticles as a Common Component of Sunscreens: An Experimental Study of Dermal/Ocular Safety Assessment
Background: The safety evaluations of sunscreens containing Titanium Dioxide-Nanoparticles (TiO2-NPs) were done by dermal exposure, acute dermal and eye irritation/corrosion, and skin sensitization according to the guideline for Organization for Economic Co-operation and Development (OECD). OBJECTIVES: The aim of our study was the evaluation of safety and toxicity of TiO2-NPs following acute su...
متن کاملcontrol of the optical properties of nanoparticles by laser fields
در این پایان نامه، درهمتنیدگی بین یک سیستم نقطه کوانتومی دوگانه(مولکول نقطه کوانتومی) و میدان مورد مطالعه قرار گرفته است. از آنتروپی ون نیومن به عنوان ابزاری برای بررسی درهمتنیدگی بین اتم و میدان استفاده شده و تاثیر پارامترهای مختلف، نظیر تونل زنی(که توسط تغییر ولتاژ ایجاد می شود)، شدت میدان و نسبت دو گسیل خودبخودی بر رفتار درجه درهمتنیدگی سیستم بررسی شده اشت.با تغییر هر یک از این پارامترها، در...
15 صفحه اولMicrobial sunscreens
Basking in the sun on an Australian beach, I began to feel a burning sensation from excessive UV irradiation and decided not to wait for the ozone layer to return. As first aid I scraped some algae and cyanobacteria from the blistering rocks and smeared them on my exposed skin. Why? Because these organisms contain sunscreen compounds to protect themselves from harmful doses of UV-B (280–315 nm)...
متن کاملDispersion and surface functionalization of oxide nanoparticles for transparent photocatalytic and UV-protecting coatings and sunscreens
This review describes recent efforts on the synthesis, dispersion and surface functionalization of the three dominating oxide nanoparticles used for photocatalytic, UV-blocking and sunscreen applications: titania, zinc oxide, and ceria. The gas phase and liquid phase synthesis is described briefly and examples are given of how weakly aggregated photocatalytic or UV-absorbing oxide nanoparticles...
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ژورنال
عنوان ژورنال: Medical Journal of Australia
سال: 2009
ISSN: 0025-729X,1326-5377
DOI: 10.5694/j.1326-5377.2009.tb02514.x