Mineral scale deposition in near wellbore regions of injection wells is one of the main challengeable issues during the water injection process, which magnifies the importance of robust models in predicting the amount of mineral scale deposition such as calcium sulfate. One of the main challenges of CaSO4 scale is in carbonated reservoirs, in which sensitive behavior is observed in related to t...

thermoluminecsence (tl) characteristics of pure caso4 nanoparticles produced by co-precipitation method are presented. the formation of the nanoparticles was confirmed by x-ray diffraction (xrd) and scanning electron microscope (sem). tl glow curve of this phosphor, exposed to gamma radiation exhibits five overlapping glow peaks in the complex glow curve at 463, 470, 483, 498 and521(k) respecti...

Limestone Chemical Looping Combustion process (LCL-C™) patented by Alstom Power Inc. proposes the formation of a CaSO4 oxygen carrier via sulfur retention when supplying Ca-based sorbent together with sulfurous fuels in fuel reactor. In present research work, four sorbents, three limestones and one dolomite different physico-chemical characteristics, have been evaluated as precursors during con...

abstract the objective of current research is to investigate distribution patterns of vegetation types and its relation with environmental factors in southern margin of haj aligholi kavir of damghan. three vegetation types including halecnemum strobilaceum, sedlitzia rosmarinus and artemisia sieberi were studied in marginal arid regions and uplands of the study area. firstly, geographic locatio...

Glial cells in the insect nervous system are believed to play a role in regulating the extracellular potassium concentration, both during neuronal activity through spatial buffering (Gardner-Medwin, Coles & Tsacopoulos, 1981), and also by forming a blood-brain barrier (Schofield & Treherne, 1984). The membrane potential of glial cells has been thought to be exclusively dependent on potassium (K...

A new force field (MSXX FF) was developed for barium sulfate (BaSO4) to reproduce the experimental properties of BaSO4 crystal (density, lattice energy, compressibility, and vibrational spectrum) and to describe properly the interaction between BaSO4 and water (binding energies and interatomic distances of Ba(H2O)8 and (SO4)(H2O)6 clusters determined from ab initio quantum mechanics calculation...