Comparison of the behaviour of manufactured and other airborne nanoparticles and the consequences for prioritising research and regulation activities
نویسندگان
چکیده
Currently, there are no air quality regulations in force in any part of the world to control number concentrations of airborne atmospheric nanoparticles (ANPs). This is partly due to a lack of reliable information on measurement methods, dispersion characteristics, modelling, health and other environmental impacts. Because of the special characteristics of manufactured (also termed engineered or synthesised) nanomaterials or nanoparticles (MNPs), a substantial increase is forecast for their manufacture and use, despite understanding of safe design and use, and health and environmental implications being in its early stage. This article discusses a number of underlining technical issues by comparing the properties and behaviour of MNPs with anthropogenically produced ANPs. Such a comparison is essential for the judicious treatment of the MNPs in any potential air quality regulatory framework for ANPs.
منابع مشابه
توالی معنادار فعالیتها در مسکن، مطالعۀ موردی ایل قشقایی
Sequence of activities has evident and objective aspects in the people living environment that depend on subjective and meaningful aspects in their culture and lifestyle. The sequence of activities with two forms of "spatial and temporal", are ways of separation or aggregation of activities in different cultures dwelling, which lie at the origin of the formation of behaviour settings. The theor...
متن کاملAnalyzing Dimensions, Consequences, and Inequalities of Organizational Citizenship Behaviour in Non-governmental Organizations of Crisis Management (Experimental Evidence: Red Crescent Society of the Islamic Republic of Iran)
INTRODUCTION: This research aimed to provide a dynamic model of organizational citizenship behavior (OCB) in crisis management non-governmental organizations with a social approach (experimental evidence: Red Crescent Society of the Islamic Republic of Iran). METHODS: This applied research was conducted using a mixed (quantitative-qualitative) method to analyze the data. The statistical popula...
متن کاملPrioritising, Ranking and Resource Implementation - A Normative Analysis
Background Priority setting in publicly financed healthcare systems should be guided by ethical norms and other considerations viewed as socially valuable, and we find several different approaches for how such norms and considerations guide priorities in healthcare decision-making. Common to many of these approaches is that interventions are ranked in relation to each other, following the appli...
متن کاملA Comparison between the Anticancer Activities of Free Paclitaxel and Paclitaxel-Loaded Niosome Nanoparticles on Human Acute Lymphoblastic Leukemia Cell Line Nalm-6
Background: Niosomes or Nonionic surfactant vesicles are nano vehicles utilized in drug delivery systems, especially in cancer therapy. In this study, these vesicles were applied as delivery system for anticancer drug, paclitaxel and then, its anticancer activities was compared with free paclitaxel on Human Acute Lymphoblastic Leukemia (ALL) cell line Nalm-6. Materialas and Methods: In this exp...
متن کاملHistomorphometric Comparison of 2 types of FDBA and DFDBA bone powders manufactured by Faravardehaye Peyvandi Iran Company in treatment of defects in rabbit calvaria bone
Abstract Background and Aim: Allografts are a group of grafting materials in two types of DFDBAs and FDBAs with various applications in restoration of osseous defects. Considering high price of foreign brands of these materials, we decided to launch a study and compare 2 types of FDBA and DFDBA osseous powders manufactured by Faravardehaye Peyvandi Iran Company and their application in restora...
متن کامل