Biodiesels are a renewable energy source, and they have the potential to be used as alternatives to diesel fuel. The aim of this study is to investigate the wear and friction characteristics of Australian native first generation and second generation biodiesels using a four-ball tribo tester. The biodiesel was produced through a two-step transesterification process and characterized according t...

Abstract Treatment planning for a patient with worn dentition and systemic disorder needs to assess different aspects of patient’s oral condition and life. This study presents prosthetic reconstruction approach of a patient with worn dentition using metal ceramic restorations, and removable partial denture. It showed that a simple and low cost but careful treatment planning may results in im...

Abstract In order to obtain sliding electrical contact materials with good conductivity and wear resistance, a series of silver doped chromium nitride (CrN-Ag) coatings were prepared by magnetron sputtering. The hardness, elastic modulus, chemical composition surface morphology the characterized in detail. tribological properties conductivities CrN-Ag investigated detail at low high current den...

The dry sliding friction and wear behaviors of TC11 titanium alloy subjected to the ultrasonic impacting and rolling process (UIRP) were studied in the present work. The microstructure of the deformation layer and the morphology of the worn surfaces were observed. The results clearly show that the wear performance of TC11 alloy after UIRP is better than that of TC11 alloy before UIRP under the ...

OBJECTIVES To adapt and refine a previously-developed youth-specific algorithm to identify bedrest for use in adults. The algorithm is based on using an automated decision tree (DT) analysis of accelerometry data. DESIGN Healthy adults (n = 141, 85 females, 19-69 years-old) wore accelerometers on the waist, with a subset also wearing accelerometers on the dominant wrist (n = 45). Participants...

This study investigated the tribological behaviour of Pongamia oil (PO) and 15W–40 mineral engine (MO) with without addition graphene nanoplatelets (GNPs). The friction wear characteristics were evaluated in four-ball anti-wear tests according to ASTM D4172 standard. morphology worn surfaces lubrication mechanism GNPs via SEM EDS. also focuses on effect GNP concentration at various concentratio...

Secure spontaneous authentication between devices worn at arbitrary locations on the same body is a challenging, yet unsolved problem. We propose BANDANA, the first-ever implicit secure device-to-device authentication scheme for devices worn on the same body. Our approach leverages instantaneous variations in acceleration patterns from the user’s gait to extract alwaysfresh secure secrets. It e...

Discrete dental traits are used as proxies for biological relatedness among modern human populations and for alpha taxonomy and phylogeny reconstruction within the hominin clade. We present a comparison of the expression of lower molar dental traits (cusp 6, cusp 7, trigonid crest pattern, and protostylid) at the enamel-dentine junction (EDJ) in a variety of extant and fossil hominoid taxa, in ...