From 2006 to 2007, the daily concentrations of major inorganic water-soluble constituents, mineral aerosol, organic carbon (OC) and elemental carbon (EC) in ambient PM10 samples were investigated from 16 urban, rural and remote sites in various regions of China, and were compared with global aerosol measurements. A large difference between urban and rural chemical species was found, normally wi...

In order to achieve ecological wastewater treatment, a “closed-loop treatment system” is recommended. Many present day systems are a “disposal-based linear system”. The traditional linear treatment systems must be transformed into the cyclical treatment to promote the conservation of water and nutrient resources. Using organic waste nutrient cycles, from “point-of-generation” to “point-of-produ...

Polar ecosystems are the most important storage and source of climatically active gases. Currently, natural biogeochemical processes organic matter circulation in soil-atmosphere system disturbed urban cryolithozone. Urbanized Arctic extremely under-investigated terms their functions regulating cycle The role soils soil-like bodies sequestration stabilization is particular interest. percentage ...

Urban runoff quality is recognized as one of the most significant pressures on aquatic ecosystems worldwide. Research into pollutants in urban runoff has traditionally focused on nutrients, suspended solids and metals and consequently knowledge of anthropogenic organic pollutants is limited. The aim of this research was to investigate the occurrence and identify the sources of certain selected ...

Gas-to-particle partitioning of organic aerosols (OA) is represented in most models by Raoult's law, and depends on the existing mass of particles into which organic gases can dissolve. This raises the possibility of non-linear response of particle-phase OA mass to the emissions of precursor volatile organic compounds (VOCs) that contribute to this partitioning mass. Implications for air qualit...

Sustainability is observed in many aspects and elements of traditional Iranian architecture, plannerand landscape architecture, and this method was used to solve many problems for many countries. The aim of thisarticle is to achieve a sustainable approach in planning urban renewal projects to identify the relationship betweenurban design considerations and the sustainable development objectives...

INTRODUCTION To promote rational and sustainable use of soil resources and to maintain the urban soil quality, it is essential to assess urban ecosystem health. In this study, the microbiological properties of urban soils in Beijing and their spatial distribution patterns across the city were evaluated based on measurements of microbial biomass carbon and urease and invertase activities of the ...

this article has been done having the objective of proposed principles regarding the role of urban decline areas and being impressionable in reducing crime. it was an investigation on urban crimes in decline areas, and finally the implementation of an approach that will lead to the creation of a healthy city. the result of this article is application of the urbanization principles aiming at hav...