Optical components of non-planar geometry require special machining to produce. Single point diamond turning is the manufacturing method of choice to produce these surfaces. Three main factors contribute to the quality of these surfaces. Machine accuracy has shown improvements with the increased use of air bearings. Tool wear and design are shown to be effected by the crystal orientation of the...

The friction coefficient is an important parameter in designing magnetic tape transports. We have introduced laser surface texturing to reduce the friction coefficient between guides and magnetic tape. The surface features enhance the formation of an air bearing and hence, reduce the friction coefficient. INTRODUCTION Lateral tape motion (LTM) is defined as the time-dependent motion of the tape...

A further step could be to develop multifunctional structures, or structures that carry loads and perform system functions. Multifunctional system technologies such as conformal load bearing antenna structures, structurally integrated energy storage/harvesting, mechanised structural systems for morphing vehicle geometry, integrated/distributed sensing and associated technologies form the basis ...

J. Korol, Central Mining Institute, Department of Material Engineering, Poland D. Burchart-Korol, A. Smoliński, Central Mining Institute, Department of Energy Saving and Air Protection, Poland In this study composition of sinter mixtures used in Polish sinter plants were established. Seven sinter mixtures composition were examined, based on iron-bearing materials, admixtures and fuels.

Abstract In air conditioning system for aircraft, cycle machine (ACM) is the flimsy core component, which impacted observably by performance and reliability of elastic foil air-dynamic pressure bearing. It's necessary to have research on static characteristics Based finite element analysis (FEA) theory, it’s clearly obtained that discretized fluid lubrication Reynolds equation dynamic bearing w...

Insertion of a cartridge encoding kanamycin resistance within an open reading frame, ORF839, in the cyanobacterium Synechococcus sp. PCC 7942 resulted in merodiploids bearing both the normal and the modified ORF839, suggesting that its gene product is essential for growth. In the absence of kanamycin the mutants were able to grow like the wild type, but in its presence the mutants grew under 0....

This paper describes the influence of rotor eccentricity synchronous reactive frequency doubler’s characteristics. Specifically, the research is concentrated on the influence of rotor eccentricity on increased frequency EMF E2 value, that is induced it stator’s secondary winding. To clarify this question the simulations by using the finite element method implemented in QuickField software, are ...

The response of satsuma mandarin (Citrus unshiu Marc. cv. Okitsu wase) on trifoliate orange (Poncirus trifoliata Raf.) rootstocks to inoculation of vesicular-arbuscular mycorrhizal (VAM) fungi, such as Glomus ambisporum Smith and Schenck, Gloumus fasciculatum (Thaxter) Gerdemann and Trappe emend. Walker and Koske, Glontus mosseae (Nicolson and Gerdemann) Gerdemann and Trappe, and Gigaspora rami...

Capture of odorant molecules by olfactory organs from the surrounding fluid is the first step of smelling. Sniffing intermittently moves fluid across sensory surfaces, increasing delivery rates of molecules to chemosensory receptors and providing discrete odour samples. Aquatic malacostracan crustaceans sniff by flicking olfactory antennules bearing arrays of chemosensory hairs (aesthetascs), c...