Pollution (i.e., sharing corrupted files, or contaminating index information with bogus index records) is a de facto problem in many file sharing Peer-to-Peer (P2P) systems. Since pollution squanders network resources and frustrates users with unprofitable downloads (due to polluted files) and unproductive download requests (due to bogus index records), the future success of file sharing based ...

The chemical composition of sediments from the Arctic mountain Lake Bolshoy Vudjavr, situated in western part Russian zone, was studied. lake has been under intense anthropogenic load for more than 90 years since development richest apatite–nepheline deposits world started. A 27 cm thick sediment core sampled central at maximum depth 37.4 m. concentrations 50 elements were analyzed by mass spec...

To protect ecosystems and their services, the critical load concept has been implemented under the framework of the Convention on Long-range Transboundary Air Pollution (UNECE) to develop effects-oriented air pollution abatement strategies. Critical loads are thresholds below which damaging effects on sensitive habitats do not occur according to current knowledge. Here we use change-point model...

A survey of the River Kali in western Uttar Pradesh (India) has been carried out to assess the contribution of point and non-point sources of pollution to the river. The river shows strong seasonal dependence for various constituents and the water quality deteriorates sharply as it flows through Muzaffarnagar city. The important characteristic associated with the pollution of the river is the d...

the development of a surface water evaluation index is a critical factor in the assessment, restoration and protection of stream water quality. quantifying water pollution in specific grade using dominant parameters is important, as this can explain the current state of water pollution with accuracy. as a result, an integrated multi-parameter water quality index has been developed. it is based ...

Anthropogenic activities affect the rivers and entire basin in different dimensions. All river basins including Ganga Damodar are polluted from unplanned anthropogenic activities. This study is an attempt to access quality of Shilabati River by computing water pollution index using eleven parameters pH, COD, BOD, DO, TDS, Total Hardness, Alkalinity, Phosphate, Chloride, Nitrate, Turbidity measu...

background: evaluation of heavy metals as toxic pollutants in environment has a significant importance in environmental pollution studies. surficial sediments of water resources have a high potential in releasing heavy metals to the upper water environment, hence sediment analysis presents guidelines to the authorities for monitoring the environmental systems. methods: in this study, total and ...