An alternative process to obtain a high degree of dewatering tailings that produces high-density product is presented in this article. This technology involves the combination particle grain size classification by hydrocyclones (HC) and horizontal vibratory screens (HVS). It makes it possible dewater grade performance. (HC-HVS) recovery water from coarse fraction (sands) through two hydrocyclon...

The effect of top rail lubricant composition on adhesion has been investigated using a laboratory ball-on-disc tribometer. Rheological properties were analysed viscosimeter and high pressure torsion device. As base medium, biodegradable ester oil with bentonite thickener was selected. Added particles for friction modification aluminium oxide, zinc copper sulfide solid lubricants molybdenum disu...

Abstract The average burial depth of carbonate reservoirs in Shunbei area exceeds 7300 meters, and the bottom hole temperature is as high 160°C. commonly used cross-linked acid system cannot meet needs fracturing. Therefore, this article uses AM, AMPS, acrylamide (AM) modified monomers, acrylic (AA) monomers to synthesize thickener SBCH-1, organic zirconium crosslinking agent SBJL1 was synthesi...

Pineapple leaf waste, with its high cellulose content, can serve as alternative starting material for the production of carboxymethyl (CMC). In this study, synthesis conditions CMC from pineapple leaves via use microwave heating were optimized. Box-Behnken design and response surface methodology applied to schedule experiments optimize condition, respectively. Preparation was investigated by va...

OBJECTIVE To examine the characteristics and changes in the pharyngeal phase of swallowing according to fluid viscosity in normal healthy persons, to help determine fluid intake methods in more detail than the use of standardized fluid. METHODS This was a prospective observational study involving 10 normal healthy adults. While the participants sequentially took in fluids with 10 different vi...

Different dosages of a commercialized potato starch were added to aerial lime-based mortars in order to check its efficiency as a rheological modifier. Several fresh state properties of the mortars were studied: consistency, density, air content, water retention capacity, setting time and evolution when applied on support. The effect of the starch on -potential of the lime particle surface as ...

Certain sexually transmitted human papillomavirus (HPV) types are causally associated with the development of cervical cancer. Our recent development of high-titer HPV pseudoviruses has made it possible to perform high-throughput in vitro screens to identify HPV infection inhibitors. Comparison of a variety of compounds revealed that carrageenan, a type of sulfated polysaccharide extracted from...