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1544 results. per page « 1 2 3 4 5 6 7 8 9 10 11 »

UK Surface Engineering industry - the way forward

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Summary of DTI commissioned report with its recommendations.

UK Surface Engineering Industry. Statistical Report, 1999

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50 page report builds on previous studies and attempts to define more accurately the size of UK industry, in terms of number of sites, processes operated (plating, industrial painting, heat treatment), employees, turnover per employee, av. age of staff. Also environmental aspects, e.g water use, effluent consent limits, the extent to which "noxious processes" have been replaced by more eco-friendly ones. o10.00

Ukrainian paint market

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Production and market statistics for the Ukraine notes that solvent-based paints continue to dominate the market. Histograms show data for 2007 to 2011.

UL approval for spray booths; VOC & HAP for waterbornes & True solvents

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Readers problems incl. UL (Underwriter Laboratories) approval for paint spray booths - work is in progress on this at UL. How to find CAS (Chemical Abstracts System) numbers for chemicals ? website http://webbook.nist.gov/chemistry lists these. MSDS (data sheets) which give only VOC or HAP and the units in which these are expressed are reviewed are discussed. Diagram illustrates concepts. Does an MSDS have to state basis on which VOC figure was calculated ? Probably not. True solvents are explained, not all organic solvents dissolve all species and this is illustrated using a paint formulation as example.

ULSI interconnect technology trend

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A brief review of the use of CVD and PVD processes in ULSI device manufacture. 14 references mainly in English.

Ultimate corrosion protection - the Tsing Ma bridge

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Comment on title bridge just built in Hong Kong and its corrosion protection, using thermally sprayed zinc. Details of its application, specifications etc. Comment on use of hot-dip galvanised & other zinc coatings with market statistics.

Ultra black coating

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Ultra-black coating consists of base, Ni-P alloy layer and phosphate layer, spectral reflectance of coating being 0.04-0.4%, coating being obtained by primary etching of NiP film with HNO3 soln. followed by secondary etching in H2SO4 -containing nitrate soln.; depositing Ni-P alloy coating from soln. containing Ni salt, Na phosphate, D,L-malic acid and malonic acid, followed by secondary etching; or plating Ni-P alloy in above solns. with addition of succinic acid.

Ultra cost saver for cleaning

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Describes 'De-Aquator' ultrafiltration process of Gtling GmbH, for regenerating cleaning systems.

Ultra fine particle gas deposition apparatus

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Ultra fine silica suspensions for wood protection

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Note on newly developed title suspensions in aqueous solution which can be made using sol-gel method and are stable. Used to impregnate wood, they show promise as timber conservation material and further studies are research their use to preserve sandstone. Website; www.feinchemie.de provides further information.

Ultra fine technology of metal surface using the electrolytic - abrasive mirror finishing method

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Ultra hard material layer

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Polycrystalline ultra hard material is formed by placing layer of high shear compaction material comprising ultra hard material and organic binder adjacent cemented metal carbide substrate; heating to >1000°C to remove binder, leaving ultra hard material layer; and processing in high pressure, high temp. apparatus to form polycrystalline hard layer bonded to cemented carbide substrate.

Ultra High Current Density Plating Cell with Rotating Vane

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Ultra high energy capacitors

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Ultra high energy capacitors using intense magnetic field insulation produced by high T(c) superconducting elements for electrical energy storage and pulsed current applications

Ultra high power illumination for pcb's

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Printed circuit board pattern illumination sources of high power but uncollimated use reflectors of the size of the work being illuminated. They can be used to image structures down to 75µm width or spacing. Air cooled metal halogen light sources are more emissive in the useful UV range than normal lamps and have a longer life. Exposure times for dry film resists are a few seconds or 10 to 20 sec for solder stopmask. In consequence, work feed becomes the rate determining step.