نتایج جستجو برای: water quality pollution indices
تعداد نتایج: 1372716 فیلتر نتایج به سال:
Nowadays, Most of the cities, especially metropolises of developing countries are engaged with environmental issues like air and water pollution, waste increase and etc., that lead to the environmental destruction. Meanwhile sustainable urban development, provides the balance between development and the environment, and supplies the current generation needs while keep its eyes on the next gener...
the investigation at water quality of kelaroud river by hfbi (hilsenhoff’s family–level biotic index) method. in this research task to the water quality of kelaroud river using biotic index hfbi and identifying the society of macroinvertebrates upon level of the family. result of this index with other index compared: ept/ chironomidae, .this task was achieved with in the year 1389-90 with takin...
Affected by regular tides, bidirectional water flows play a crucial role in surface river systems. Using optimization theory to design a water quality monitoring network can reduce the redundant monitoring nodes as well as save the costs for building and running a monitoring network. A novel algorithm is proposed to design an optimum water quality monitoring network for tidal rivers with bidire...
the larsemann hills range is an ice-free oasis on the ingrid christensen coast of princess elizabeth land, east antarctica, which includes bharti island, fisher island, mcleod island, broknes peninsula, stornes peninsula, and several other islands, promontories, and nunataks. the larsemann hills is an ice-free area of approximately 50 km2, located halfway between the vestfold hills and the amer...
Water and sediment samples were collected from six different stations, located along the Nil River between February and June 2015. Concentrations of cadmium, lead, zinc, and copper were determined. The extent of the sediment pollution was assessed, using the multiple pollution indices, namely contamination factor (CF), pollution load index (PLI), and the geoaccumulation index (Igeo). The result...
Assessment of water quality was conducted from June to December, 2011 in five stations along the stretch of the Benin River between Ajimele and Koko town in attempt to assess and determine the source of anthropogenic activities affecting the river. Twentyfour parameters have been monitored on 5 sampling stations on a monthly-day-trip. Inter station comparisons and locations of significant diffe...
Sustainable development has always been the objective of many fields, including the tourism and transportation sector. However, a major part of this sector, the airline industry, deals with many negative impacts, such as air pollution, noise, CO2 emission, and labor practice. Corporate social responsibility (CSR) is a strategic business activity that can enhance the sustainability of the airlin...
Surface water quality models can be useful tools to simulate and predict the levels, distributions, and risks of chemical pollutants in a given water body. The modeling results from these models under different pollution scenarios are very important components of environmental impact assessment and can provide a basis and technique support for environmental management agencies to make right dec...
To control source pollution and improve water quality, an understanding of the spatiotemporal characteristics of organic contaminant concentrations in affected receiving waters is necessary. The Songhua River in northeast China is the country's third-largest domestic river and loadings of organic contaminants along an industrialized section have made it the focal point of a national pollution r...
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