The self-tightening technology of body tube is to apply a certain pressure in the inner bore so that corresponding residual stress generated tube, and can improve situation when it use extend its service life. Most existing research for large-caliber artillery are simplified thick-walled cylinder model, ignoring internal rifling chrome-plated processing factors, impact load on cracks stresses s...

In this paper, the effect of sodium lignosulfonate and carboxymethyl cellulose on stability a water-coal suspension was studied. As result, viscosity 0.01-0.08 P∙s. The change in dynamic shear rate considered when adding these plasticizers different changes. minimum value 13.6 achieved with addition LST plasticizer (SD = 0.1%) presence 40% coal. influence alkali also

Melt inclusions were studied in chrome diopside from the Inagli deposit of gemstones in the Inagli massif of alkaline ultrabasic rocks of potassic affinity in the northwestern Aldan shield, Yakutia, Russia. The chrome diopside is highly transparent and has an intense green color. Its Cr 2 O 3 content varies from 0.13 to 0.75 wt %. Primary and primary–secondary polyphase inclusions in chrome dio...

In a weak acid medium, protein reacts with a monoazo dye of chromotropic acid, such as Chromazol KS (CALKS), Acid Chrome Dark Blue (ACDB), Chrome Blue SE (CBSE), Acid Chrome Blue K (ACBK), Chlorophosphonazo I (CPAI), Arsennazo I (AAI) and Chromotrope 2R (CT2R), to form a combination product. This results in a significant enhancement of the resonance Rayleigh-scattering (RRS) intensity, and the ...

STUDY DESIGN This is a retrospective study comparing polyethylene wear between ceramic ball heads and metal ball heads in total hip arthroplasty. BACKGROUND The ceramic-on-polyethylene bearing option has been introduced as an alternative to metal-on-polyethylene to minimize polyethylene wear debris and reduce subsequent osteolysis and aseptic loosening. However, the reported data were debatab...

A novel pickle less combination tannage based on nano-SiO2 and oxazolidine as a substitute for chrome tanning has been developed. The size and distribution of nano-SiO2 in protein, the hydrothermal stability, the mechanical properties and the antifungal effect of final leather as well as the evaluation of eco-friendly characteristics of combination tannage were investigated. Scanning Electric M...