Cerium oxide (CeO2) particle reinforced Ni-B composite coating was produced by electroless method from a bath containing CeO2 particles. In the plating bath, nickel sulfate hexahydrate ((NiSO4.6H2O) used as source, dimethylamine borane ((CH3)2NHBH3) reducing agent, thiourea (CH4N2S) stabilizer and sodium acetate (CH3COONa) complexing agent. The aim of study is to investigate structural characte...

Abstract This paper presents the first report of ultrasonic treatment (UST) assisted casting independent 2D layered hexagonal boron nitride (hBN) reinforced aluminum matrix composites. A linear enhancement nucleation density is obtained with time from 0 to 90 s dispersion hBN platelets by UST. Outstanding grain refinement 72% 375.3 103.6 ?m UST for 90 s. The corresponding nanohardness 709.2 MPa...

In this study, the tapered roller bearing was adopted to explore effect of manganese phosphate coating on friction, wear, and lifespan bearings. Line friction samples with without a were prepared. The White Light Interferometry used analyze three-dimensional morphology roughness, Optimal Schwing–Reib–Verschleiss-5 multifunctional wear tester applied obtain tribological parameters before after a...

Dr.-Ing. Jutta Fortmann Wrist-Worn Light-Based Smart Digital Jewellery In recent years wearable devices have become an emerging trend in the consumer market. However, recent studies in the U.S. show that a third of owners of a wearable device abandon its use within six months. Supposed reasons are, among others, a lack in useful functions, aesthetics, and comfort. Smart Digital Jewellery has be...

A bow with horse tail hair is used to play the violin. New and worn-out bow hairs were observed by atomic force microscopy. The cuticles of the new bow hair were already damaged by bleach and delipidation, however the worn-out bow hairs were much more damaged and broken off by force, which relates to wearing out.

BACKGROUND AND OBJECTIVE Wearing of gloves reduces transmission of organisms by healthcare workers' hands but is not a substitute for hand hygiene. Results of previous studies have varied as to whether hand hygiene is worse when gloves are worn. Most studies have been small and used nonstandardized assessments of glove use and hand hygiene. We sought to observe whether gloves were worn when app...