The study quantified the heavy metal contamination, their sources and assessed the environmental risk of roadside agricultural land. Forty-five (45) surface soil samples were collected from fifteen (15) sampling points in Dhaka-Aricha highway (Hemayetpur to Uthali) and examined of heavy metals (Pb, Cd, Cu, Zn, Mn, Fe) using the Atomic Absorption Spectrophotometry (AAS) technique. The […]
The objective of our study is to analyze the geometry of 2D fracture networks using fractal analysis methods. Three types of analyzes reflecting fractal behaviors, namely monofractal analysis, multifractal analysis and fractal anisotropy analysis are introduced as typical procedures to examine the density, the heterogeneity or the homogeneity, and the spatial-temporal directional relationship between the […]
In recent years, there has been a tendency towards mechanized drilling due to safety, high rate and efficiency, and environmental compatibility. Raise Boring Machines (RBM) are used for the mechanized drilling of shafts and other inclined structures in civil and mining projects. Choosing the type of RBM and accurately estimating the functions are the main […]
Having information about Young’s modulus is extremely essential for characterization of the hydrocarbon reservoirs. This property can be conventionally determined by core sample data analysis in laboratory that is time-consuming, critically expensive and discontinuous. Therefore, many researchers have always been looking for suitable methods to estimate Young’s modulus with acceptable accuracy. The current research aims […]
In this study, a foraminiferal biozonation scheme for the Late Cenomanian – Coniacian deposits for the Lorestan basin, is proposed. Five successive biozones are recognized within the Sarvak, Surgah and Ilam formations, which in stratigraphic arrangement are Nezzazata – Alveolinids Assemblage Zone (Late Cenomanian- Early Turonian), Helvetoglobotruncana helvetica Total Rang Zone (Early- Middle Turonian), Marginotruncana […]
Brittle faults have the most influence on the engineering properties of rock masses and they are of special importance. The complexity of the faults makes it difficult to survey their geotechnics, and even the type of fault, has a different effect on the fragility of rock masses. For this purpose, in this study, the geomechanical […]
