Due to the importance of nanoparticles stability in industrial applications, in this research, stability of laponite nanoparticles dispersions containing different concentrations of sodium sulfonated polyacrylamide (SPA) was investigated in electrolyte media for oil reservoirs applications. In this regard, effect of parameters such as polymer concentration, temperature, and ionic strength were ...

results a number of 7-11 repeats in the spa gene xr region were determined. strains with 10 repeats were65%, therefore they had the highest percentage in isolates. seven repeats strains were 20% and each of the strains with 8, 9 and 11 repeats had the frequency of 5%. s. aureus strains antibiotic resistance was 35%, 5%, 45% and 40% for tetracycline, amoxicillin, gentamicin and erythromycin resp...

The paper examines face-to-face interaction in a simple two-person bargaining game with incomplete information about the division of a fixed sum of money in which each bargainer can either have costs to be subtracted from her bargaining agreement payoff or not. The bargaining events are observed by onlookers who make guesses of the cost situations of the participants. The work of Gauthier (1978...

In this paper, two Japanese particles wa and mo are taken up. Wa is known as a topic marker and mo is a correspondent of English particles too and also. After reviewing several studies that claim topics and particles like too and also evoke alternatives, a formal semantic system with structured meanings is constructed for wa and mo, incorporating the insights of the previous studies. The propos...

Background: Staphylococcal protein A (SPA) is a cell wall component of Staphylococcus aureus that binds to different IgG subclasses of human and several animal species. This bacterial protein can be used as an antibody detector in various immunological assays or as an isolation reagent for the purification of antibody molecules via immuno-chromatography procedures.Objectives: Molecular cl...

When exploring biological determinants of spontaneous physical activity (SPA), it is critical to consider whether methodological factors differentially affect rodents and the measured SPA. We determined whether acclimation time, sensory stimulation, vendor, or chamber size affected measures in rodents with varying propensity for SPA. We used principal component analysis to determine which SPA c...