Fabrication by the ‘Laser-LIGA’ process of three-dimensional structures for micro-fluidic devices is investigated. Polymer moulds are formed by projection ablation using an excimer laser operating at 248 nm wavelength. The moulds are replicated by electroforming — as in conventional X-ray LIGA — to produce fixed and freely moving nickel microturbine parts with heights of 150 lm, wall angles of ...

Cylindrical microlens array (CMA) is applied widely in imaging, sensing, and laser machining fields. Among the many techniques for CMA, moulding considered a mass-production method with low-cost good accuracy. Aimed at present problems of CMA moulds, which include low processing efficiency prediction surface topography, this paper focused on fabrication RB-SiC moulds by precision grinding micro...

Humid indoor environments may be colonised by allergenic filamentous microfungi (moulds), Aspergillus spp., Penicillium spp., Cladosporium spp., and Alternaria spp. in particular. Mould-induced respiratory diseases are a worldwide problem. In the last two decades, mould allergens and glucans have been used as markers of indoor exposure to moulds. Recently, mould allergens Alt a 1 (Alternaria al...

PURPOSE Skin cancer is the most common tumor in the population. There are different therapeutic modalities. Brachytherapy is one of the techniques used, in which it is necessary to build customized moulds for some patients. Currently, these moulds are made by hand using rudimentary techniques. We present a new procedure based on 3D printing and the analysis of the clinical workflow. MATERIAL ...

BACKGROUND Tea may be classified as unfermented green, semi-ferinented oolong and fermented black. All of these types are derived from Camellia sinensis, the Tea Plant, which contains the low molecular weight (LMW) agent Epigallocatechin gallate (EGCg), probably responsible for allergic reactions. The aim of our study was to asses the work-related allergic symptoms and IgE-mediated sensitivity ...

OBJECTIVES Mucormycetes (formerly known as zygomycetes of the order Mucorales) and hyaline moulds such as those of the genus Fusarium or Paecilomyces are emerging as significant human pathogens. The aim of the study was to determine the in vitro antifungal susceptibility of these fungi to older and newer antifungals and to investigate the antifungal activity of amphotericin B, posaconazole and ...

The manufacturing of moulds and dies is achieved through expensive and complicated manufacturing processes. There is a need in the mould and die tool industry for technologically advanced systems/machinery that will be able to facilitate re-conditioning of moulds and dies at moderate costs and within short period of time. The re-conditioning process requires highly dextrous equipment, with high...