May 2011
Physicochemical typology of water of a middle atlas river (Morocco) where the common trout (Salmo trutta macrstigma, Duméril, 1858) live: Oued Sidi Rachid
For every living being, ecological conditions greatly influence biology. In the case of a fish, these conditions may be responsible for its presence or absence in the medium, its development and its population size. This work studies the characteristics and physicochemical typology of Sidi Rachid River, known by its wealth of the Salmonidae fish:Salmo trutta macrostigma (Duméril,...
May 2011
Characterization and evaluation of the factors affecting the geochemistry of surface water of Koudiat Medouar Basin, Algeria
Hydrochemistry of surface water in Koudiat Medouar Basin, Algeria was used to assess the quality of surface water for determining its suitability for drinking and agricultural purposes. In the three stations, there is a good correlation between the electrical conductivity and elements Ca, Mg, K, Cl, SO4 and HCO3. In order to determine the geochemical nature of water, the data was interpreted using the...
May 2011
Vegetation composition and soil nutrients status from polyculture to monoculture
The study was conducted on status of nutrients in three major types of forests namely, broad-leaved, mixed pine and pine forests in Meghalaya, considering altitude and seasonality as variables. The findings revealed that the change in micro-environmental conditions as influenced by attitude and seasonality has marked effect on status and release of nutrients in the soil of representative forest stands at...
May 2011
Environmental laws and policies related to periodic flooding and sedimentation in the Lake Victoria Basin (LVB) of East Africa
What should a community of three states with diverse historical profiles of legal and regulatory frameworks do when a common ecological resource is threatened any yet is critical in the sustenance of communities around it? This is the challenge that East African States faced with dealing with Lake Victoria Basin (LVB) in East Africa (Uganda, Kenya, Tanzania, Rwanda and Burundi). Given the various ecological,...
May 2011
Use of stone powder in concrete and mortar as an alternative of sand
Stone powder produced from stone crushing zones appears as a problem for effective disposal. Sand is a common fine aggregate used in construction work as a fine aggregate. In this study, the main concern is to find an alternative of sand. Substitution of normal sand by stone powder will serve both solid waste minimization and waste recovery. The study focuses to determine the relative performance of concrete...
May 2011
Potential of using recycled low-density polyethylene in wood composites board
The aim of this study was to investigate the suitability of using recycled low density polyethylene (RLDPE) in wood board manufacturing. The composite board was produced by compressive moulding by increasing the percentage of LDPE from 30 to 50 wt% with interval of 10 wt% at a temperatures of 140 and 180°C, pressure of 30 to 40 Kg/cm2 and pressing time 7 to 13 min. The microstructure and mechanical...
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