Batch mode micro-electro-discharge machining ( EDM) is a lithography-compatible microfabrication method suitable for making devices from bulk metals, including stainless steel. In high-density patterns, spurious discharges through debris can cause workpiece edge rounding, fast tool wear, and mushroom-shaped metal recasting of the tool. This paper reports a Si coating technique that acts as a di...

In recent years, with the development of micro/nanoelectromechanical systems (MEMS/NEMS), the demand for efficient lubricants of silicon surfaces intensified. Although the use of ionic liquids (ILs) as additives to base oils in the lubrication of steel/steel or other types of metal/ metal tribological pairs has been investigated, the number of studies involving Si is very low. In this work, we ...

A new East Fast-Extraction System is under construction in the SPS, to supply particles with a maximum batch length of 7.8 μs and 10.5 μs to the LHC and to CNGS (CERN Neutrino to Gran Sasso), respectively. The extraction septum magnets actually used at the SPS have been designed for slow extraction over several seconds and have large cooling and electrical power demands. A fast system of only 2...

A secondary recrystallization Lab study focusing on the secondary recrystallization temperature and magnetic properties was carried out on cold rolling industrial samples of 3%Si grain-oriented electrical steel produced by low slab reheating temperature technology. The results showed a secondary recrystallization temperature, determined by the observed grain size change, of 1080 C with annealin...

Through the sound spectrum analysis, this paper indicates that the noise peak frequency comes from mechanical shock, investigating the frequencies of noise sources, the noise peak frequency is found --the impact pairs of the valve plate and the spring~ The cause to raise the noise is on the phenomenon detachment between the valve plate and the spring. For this reason the valve plate produces hi...

Genetically anemic SI/SI(d) mice have been shown previously to have a defective hematopoietic environment which prevents extensive erythroid differentiation of normal hematopoietic stem cells and also confers resistance to the erythroleukemia-inducing virus, Friend spleen focus-forming virus (SFFV). In this study, we show that the relative resistance of SI/SI(d) mice to transformation by SFFV i...

BACKGROUND Titanium-molybdenum alloy (TMA) and stainless steel (SS) wires are commonly used in orthodontics as arch-wires for tooth movement. However, plastic deformation phenomenon in these arch-wires seems to be a major concern among orthodontists. This study aimed to compare the mechanical properties of TMA and SS wires with different dimensions. MATERIAL AND METHODS Seventy-two wire sampl...