40 research outputs found
Investigation of the lubrication performance using WC:C coated tool surfaces for hot stamping AA6082
Tribology and hot forming performance of self-lubricious NC/NiBN and NC/WC:C hybrid composite coatings for hot forming die
Experimental investigations on hot forming of AA6082 using advanced plasma nitrocarburised and CAPVD WC: C coated tools
In situ synthesis of the one-dimensional Ag wires reinforced composites film by a novel active screen plasma process:nanostructure and excellent adhesion resistance
Low adhesion effect of novel duplex NC/WC:C coatings against ductile materials at elevated temperatures
Synthesis and in-vitro antibacterial properties of a functionally graded Ag impregnated composite surface
Towards near-permanent CoCrMo prosthesis surface by combining micro-texturing and low temperature plasma carburising
Towards near-permanent CoCrMo prosthesis surface by combining micro-texturing and low temperature plasma carburising
This article will argue that the legal academy has much to learn by recording, transcribing and systematically studying student-client and attorney-client consultations. Clinical faculty can utilize conversation analysis and other social science techniques to do this. Social scientists and medical providers have studied doctor-patient conversations in this way over many years. Through this systematic study researchers have reached conclusions about effective doctor-patient consultations that form the basis for teaching these skills in medical school. This article will highlight some of these studies and their findings. Some have contended that attorney-client conversations simply cannot be recorded and studied in the same way as doctor-patient consultations due to attorney-client privilege. This article will lay out how a law clinic could obtain client informed consent to this procedure, protect client confidentiality and privilege, and gain the necessary approval of the Institutional Review Board. Finally, this article will suggest topics about client consultations that could merit study in the law clinic
Towards multi-functional stainless steel surface: plasma surface alloying with N, Ag and Cu
Hospital-acquired infections, a large proportion of which are derived from contact transmission, represent a massive global challenge. It has been proved that surface modification of biomaterials with Ag or Cu has evolved as a potentially effective method for preventing bacterial proliferation on the devices surfaces. However, thin antimicrobial coatings on materials such as austenitic stainless steels can be easily worn and removed in relative motion with other surfaces. The purpose of this study is to develop multi-functional stainless steel surfaces which combine greatly improved wear resistance, at least maintain corrosion resistance and provide long-lasting, high efficacy, antimicrobial effects. In this thesis a series of surface engineering technologies, including active screen co-alloying, active screen plasma duplex alloying and double glow plus active screen duplex plasma alloying, were developed for surface alloying stainless steel with Ag or Cu and N; the phase constitution, microstructure, composition, and surface roughness of the alloyed surfaces were fully characterized, and the surface hardness, wear resistance, bonding strength, antimicrobial efficiency and corrosion behaviour of the treated surfaces were evaluated. In addition, further inspection of the wear mechanisms and corrosion mechanisms were conducted on post-exposure surfaces. It was found that the adhesive wear mechanism of austenite can be reduced by this alloying combination and the wear resistance was improved by up to 1000 times, and the Ag/Cu alloyed surface was bactericidal and growth-inhibitive for many pathogens including E. coli NCTC 10418 and S. epidermidis NCTC 11047 effectively up to 99%/6h. The mechanism of bactericidal efficiency of Ag/Cu is found dependent on the structure of the bacterial membrane and a higher efficiency of antibacterial agents is found associated with the higher elemental concentration of copper and silver. With regard to corrosion, it is affected largely by the configuration of surface structure and several corrosion mechanisms were evolved. One principal conclusion was that it is feasible to generate long lasting antimicrobial stainless steel surface to fulfil growing demands from industry for practically robust multifunctional medical device surfaces