The ability of a rock to store and flow fluids is dependent upon the pore volume, pore geometry and its connectivity. Carbonate rocks are inherently heterogeneous having been laid down in a range of depositional environments and having undergone significant diagenesis. They are particularly difficult to characterise as the pore sizes can vary over orders of magnitudes and connectivity of pores ...

Biocement can be achieved through the microbially induced carbonate precipitation (MICP) process. Such a method potentially utilized as an eco-friendly for civil and environmental engineering applications such soil ground improvement wind erosion control of surface soil. In this method, one key step is effective production ureolytic bacteria. previous laboratory field studies, cultivation bacte...

pinch technology is one of the best methods for designing a multi stream heat exchanger(mshe) through a network; current pinch-based methods, however, lead to a larger and more complicateddesign problems. the major drawback of the current methods is they result in designs having more individual mshe sections than essential, correspond to the enthalpy intervals on temperature vs. enthalpy diagra...

background: palladium-103 (103pd) is a brachytherapy source for cancer treatment. the monte carlo codes are usually applied for dose distribution and effect of shieldings. monte carlo calculation of dose distribution in water phantom due to a med3633 103pd source is presented in this work. materials and methods: the dose distribution around the 103pd model med3633 located in the center of 30×30...

in this paper, we study spacelike dual biharmonic curves. we characterize spacelike dual biharmonic curves in terms of their curvature and torsion in the lorentzian dual heisenberg group . we give necessary and sufficient conditions for spacelike dual biharmonic curves in the lorentzian dual heisenberg group . therefore, we prove that all spacelike dual biharmonic curves are spacelike dual heli...

Strength improvement of cement-based materials by the addition bacteria has been reported over past decade and mainly attributed to microbially induced calcite precipitation (MICP1). However, ability survive, grow retain their metabolic activity in concrete is questionable. This research sheds light on mechanisms involved strength enhancement cementitious that contain bacteria. The different co...