An analysis of wetland inventory undertaken in Africa was conducted during 1998/99. This was part of a global project to examine the extent of wetland inventory and provide best estimates of the extent of wetlands. The best estimate for Africa was a total area of wetlands estimated as ca. 123 000 000 ha, covering about 4% of the land surface. More than 85% of the area (ca. 107 500 000 ha) of th...

there are many trends in making an ecological city all around the word, one of important cases in this approach is safe and health water. according by definitions, safe and potable water is water needed for conducting the activities of man. potable water is the most important renewable sources and this resource plays important role for survival of most living organisms as well as man based on s...

Introduction Based on Task Group No. 43 (TG-43U1) recommendations, water phantom is proposed as a reference phantom for the dosimetry of brachytherapy sources. The experimental determination of TG-43 parameters is usually performed in water-equivalent solid phantoms. The purpose of this study was to determine the conversion factors for equalizing solid phantoms to water. Materials and Methods T...

Water management is a crucial resource conservation challenge that mankind faces, and encouraging the creation of manmade wetlands with goal achieving long-term water key to urban development. To summarise analyse status research on relationship between constructed wetlands, this paper makes use advantages bibliometric visualization CiteSpace generate country/region maps author-collaboration ma...

The decommissioning of manmade structures in the marine environment causes large volumes greenhouse gas (GHG) emissions to be released. Current GHG calculation methods for offshore oil and industry infrastructure leave sources unaccounted for. results presented here show that these consequential are underreported by 50%. Until now, no study has looked at cumulative impact decommissioning, but t...

Introduction: The groundwater is the main resource of water. This study aimed to investigate water quality variations in the villages of AqQala in a eleven-year period as well as designing and implementing the Water Quality Index (WQI). Materials and Methods: In order to investigate water quality variations, the data in the villages of AqQala city was collected in an eleven-year period (2005-2...