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H E Farnsworth (in) "Clean Surfaces"

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H2 absorption at ambient conditions by anodized aluminum oxide (AAO) pattern-transferred Pd nanotubes occluded by Mg nanoparticles.

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MCP The anodized alumina oxide (AAO) pattern-transferred Pd nanotubes occluded by Mg nanoparticles were easily manufactured by the use of vacuum evaporation technique at room temperature. The nanostructures were subjected to the H2 absorption at ambient conditions. The material can absorb H2 very fast (the equilibration between the hydrogen gas and within the material at each target pressure occurs in a time shorter than 110 s) reaching approximately 1 wt.% of H2 at only 0.4 kPa of H2 pressure. At 100 kPa the system absorbs up to 2 wt.% of H2 at room temperature. After hydrogenation a drastic change in the structure and morphology of the nanostructures, as an effect of the metal lattice expansion in all three dimensions, was observed which was characterized by the appearance of a regular array of columns with a substantial increase in volume as compared to the nanostructures before hydrogenation. The application of the system in a potential hydrogen sensing device is envisaged.

HA coating fabricated by electrochemical deposition on modified Ti6Al4V alloy.

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Hach water analysis knowledge base

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Website with search engine specialising in chemical analysis of water, effluents etc, with links to regulatory bodies, styles itself "H2O University". Also includes Hach "Blue Books", grouped under 5 headings, General analytical testing & Measurement; Lab Practice; COD & BOD analysis (chemical & biological oxygen demand); microbiological testing; turbidity testing. Web address is www.hach.com/cs/knowledge.htm

Haden Environmental Corporation: paint overspray recycling programme

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Title company, with Daimler Chrysler, have developed a paint waste recycling programme. The DryPure process is described with process flow sheet, giving an 8:1 volume reduction & very detailed information is given on laser particle sizing analysis. The product, mainly a powdered resin, can be used in a range of mastics or sealers.

Haemostatic bactericidal compositions.

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Local preparation having combined haemostatic and bactericidal effect. The haemostatic preparations comprise, as active haemostatic and bactericidal ingredients, a polyelectrolyte matrix of a polymeric carboxylic acid of a predetermined average molecular weight range and a bactericidal agent, wherein bactericidal agent is silver in the form of dissolved, free silver ions, oligomeric silver clusters, silver colloidal nanoparticles or any combination of such. Methods of production of these haemostatic preparations on the basis of poly(acrylic acid) of a predetermined average molecular weight range by introducing silver salts into the aforementioned polymeric acid, adjusting pH of the solution and irradiation by light, where applicable, are described. The compositions may be liquid or dry.

Hafner Co - Specialists in Precious Metal Recovery & Noble Metal Plating

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Visit, with photos & process flow sheet diagrams, to German refinery who are also jobbing platers.

Hafnium carbide hard coatings produced by pulsed laser ablation and deposition

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SURF Reports deposition of thin films of hafnium carbide by pulsed laser ablation deposition.. The coatings characteristics, investigated by conventional techniques such as X-ray diffraction (XRD), scanning and transmission electron microscopy (SEM/TEM), and atomic force microscopy (AFM) are discussed in relation with the properties of the plasma produced in the interaction between the laser source (frequency doubled Nd: YAG laser) and the target. The plasma analysis, performed by emission spectroscopy, optical imaging and time of flight mass spectrometry, is also used to clarify the ablation mechanism and to compare it with those of the other carbides of the same group.

Hafnium carbide hard coatings produced by pulsed laser ablation and deposition

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SURF Reports deposition of thin films of hafnium carbide by pulsed laser ablation deposition.. The coatings characteristics, investigated by conventional techniques such as X-ray diffraction (XRD), scanning and transmission electron microscopy (SEM/TEM), and atomic force microscopy (AFM) are discussed in relation with the properties of the plasma produced in the interaction between the laser source (frequency doubled Nd: YAG laser) and the target. The plasma analysis, performed by emission spectroscopy, optical imaging and time of flight mass spectrometry, is also used to clarify the ablation mechanism and to compare it with those of the other carbides of the same group.

Hafnium tetraiodide and oxygen as precursors for atomic layer deposition of hafnium oxide thin films

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Hafnium tetraiodide and oxygen as precursors for atomic layer deposition of hafnium oxide thin films

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Hagener Surface Finishing Exchange, 2000

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Regional "Fair" where applicators could meet customers, and themes incl. chromium plating of small parts, barrel coating of cathodic electrocoat paint, fluidised bed coating, PVD coatings for tools, induction hardening, stress reductions in steels and laboratory & R&D services.

Hail damage repair

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A new process for repairing hailstone damage to the paintwork of motor vehicles is mentioned.

HAL Specifications & Process Controls

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Guide to good practice with diagrams covers horizontal HASL, formation of intermetallics, effects of geometry, solder thickness distribution, specifications and how to reach them. 1 ref.

Half-century of Metalloberflaeche

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Magazine celebrates its half-century with reproduction of page 1, January 1947 issue. Historical photos of plating lines & wooden tumbling barrels are shown. A handful of "highlights" are cited.