Penetration and Toxicity of Nanomaterials in Higher Plants
نویسندگان
چکیده
منابع مشابه
Penetration and Toxicity of Nanomaterials in Higher Plants
Nanomaterials (NMs) comprise either inorganic particles consisting of metals, oxides, and salts that exist in nature and may be also produced in the laboratory, or organic particles originating only from the laboratory, having at least one dimension between 1 and 100 nm in size. According to shape, size, surface area, and charge, NMs have different mechanical, chemical, electrical, and optical ...
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این پژوهش با هدف "بررسی وضعیت موجود آموزش عالی مجازی در ایران و راههای توسعه و ارتقای آن " و با روش توصیفی-تحلیلی و پیمایشی صورت پذیرفته است. بررسی اسنادو مدارک موجود در زمینه آموزش مجازی نشان داد تعداد دانشجویان و مقاطع تحصیلی و رشته محل های دوره های الکترونیکی چندان مطلوب نبوده و از نظر کیفی نیز وضعیت شاخص خدمات آموزشی اساتید و وضعیت شبکه اینترنت در محیط آموزش مجازی نامطلوب است.
[Transdermal penetration and biodistribution of nanomaterials and their acute toxicity in vivo].
Recently, the number of applications of nanomaterials in medicine, cosmetics and food to which we are directly exposed has been expanding rapidly. The safety of such nanomaterials has not been well assessed, because nanomaterials have been considered as safe as common larger sized materials which are known not to be absorbed by the body. Therefore, WHO and OECD are collecting safety information...
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This decade has seen revolutionary developments in the field of nanotechnology with newer and diverse applications of nanoparticles (NPs) appearing every day. However, there are limited data about the toxicity of nanoparticles and their fate in biological systems. Inhalation, ingestion, and dermal penetration are the potential exposure routes for nanoparticles, whereas particle size, shape, sur...
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Ammonium (NH4) toxicity is an issue of global ecological and economic importance. In this review, we discuss the major themes of NH4 toxicity, including the occurrence of NH4 in the biosphere, response differences to NH4 nutrition among wild and domesticated species, symptoms and proposed mechanisms underlying toxicity, and means by which it can be alleviated. Where possible, nitrate (NO3) nutr...
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ژورنال
عنوان ژورنال: Nanomaterials
سال: 2015
ISSN: 2079-4991
DOI: 10.3390/nano5020851