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Based on the elaboration likelihood model (ELM), this study examined the role of consumers' initial trust in the persuasion process in e-commerce advertising in China. The results of two experiments revealed two significant moderators of the central route for processing of information: the disposition to trust (negative moderator) and institution-based trust (IBT; positive moderator). Specifically, low disposition to trust strengthened the influence of argument quality on consumers' product attitude and purchase intention. The same effect occurred under conditions of high IBT. However, when it came to the peripheral route, the effects of disposition to trust and IBT were not significant. [ABSTRACT FROM AUTHOR]

Most of bentonite used in modern drilling engineering is physically and chemically modified calcium bentonite. However, with the increase of drilling depth, the bottom hole temperature may reach 180 °C, thus a large amount of calcium bentonite used in the drilling fluid will be unstable. This paper covers three kinds of calcium bentonite with poor rheological properties at high temperature, such as apparent viscosity is greater than 45 mPa·s or less than 10 mPa·s, API filtration loss is greater than 25 mL/30 min, which are diluted type, shear thickening type and low-shear type, these defects will make the rheological properties of drilling fluid worse. The difference is attributed to bentonite mineral composition, such as montmorillonite with good hydration expansion performance. By adding three kinds of heat-resistant water-soluble copolymers Na-HPAN (hydrolyzed polyacrylonitrile sodium), PAS (polycarboxylate salt) and SMP (sulfomethyl phenolic resin), the rheological properties of calcium bentonite drilling fluids can be significantly improved. For example, the addition of 0.1 wt% Na-HPAN and 0.1 wt% PAS increased the apparent viscosity of the XZJ calcium bentonite suspension from 4.5 to 19.5 mPa·s at 180 °C, and the filtration loss also decreased from 20.2 to 17.8 mL. [ABSTRACT FROM AUTHOR]