39 research outputs found

    Ni-P: Microstructure and micro-compression

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    Electroless nickel-phosphorus (EN-P) plating is a popular deposition process with widespread applications in microelectronics [1, 2]. Much emphasis has been given on the plating process and on the physical and chemical properties of the EN-P layers; however their mechanical properties down to the sub-micrometer dimensions have not been elucidated systematically. In this work, we study the mechanical properties of EN-P as a function of annealing states using in-situ pillar compression technique [3]. Please click Additional Files below to see the full abstract

    A multicenter randomized controlled trial using a novel collagen membrane for guided bone regeneration at dehisced single implant sites: Outcome at prosthetic delivery and at 1â year followâ up

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    ObjectivesTo compare clinical performance of a novel resorbable nonâ crossâ linked collagen membrane (CXP) with a reference membrane (nonâ crossâ linked resorbable membrane; BG) for simultaneous implant placement and guided bone regeneration (GBR) at dehisced single implant sites.Materials and methodsPreliminary data from this randomized controlled trial were reported previously; this is the 12â month report. The primary outcome measure was defected height at 6 months postâ GBR. Secondary outcomes included implant cumulative survival rate (CSR) and success rate since placement; bone level changes, pink esthetic score (PES), and patient satisfaction since definitive prosthesis delivery; patient quality of life since pretreatment; and the 1â year bleeding index. Nonâ parametric statistical analyses were performed.ResultsAmong patients, 24 were treated with CXP and 25 with BG. The 1â year implant CSR and success rate were 100% (n = 42). Bone level change between definitive prosthetic delivery and 1 year was not significantly different between the CXP and BG groups (BG + 0.42 mm, CXP + 0.01 mm). The PES increased from 7.55 to 8.10 for the CXP group and from 6.48 to 7.48 for the BG group; 1â year bleeding indices were 0 (16 CXP, 18 BG) and 1 (4 CXP, 2 BG). Patient quality of life changed from an OHIPâ 14 score of 6.5 at pretreatment to 1.9 at 1 year. Overall satisfaction (visual analogue score) with function and esthetics was 9.9 and 9.7, respectively. Interâ group differences were not significant for assessed outcomes. No deviceâ related adverse events were reported.ConclusionsThe use of CXP and BG for simultaneous implant placement and GBR at dehisced implant sites similarly reduced defect height and improved secondary measures, indicating nonâ inferiority.Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/149491/1/clr13426.pdfhttps://deepblue.lib.umich.edu/bitstream/2027.42/149491/2/clr13426_am.pd

    Simulation of a Magnetocaloric Heat Pump in Building Technology

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    Science.Research.Pannonia. 16Increased quality of building envelopes in the last decades leads to decreased heating demands of new buildings and therefore heating devices with lower heating powers are needed. !ere is a lack of suitable solutions in the heating market in the small power range, which can cover small heating loads decentral without distribution losses. In the presented study, the potential of magnetocaloric heating is investigated. Apart from the advantage that no climate-relevant gases are used compared to commonly used compression heat pumps, this technology is suitable for covering low heating requirements. A cornerstone of the investigation is the development of a programme for simulating the behaviour of a building-integrated magnetocaloric heat pump. Target is to determine the effect of the change in basic properties such as the nature of the magnetocaloric material, the magnetic flux density, the working frequency, etc., but also to determine the influence of building parameters on the overall efficiency of the heating system.Forschung Burgenlan

    Experimental Analysis of a Thermoelectric Water-to-Water Heat Pump

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    Forschung Burgenlan

    PELTIER HEAT PUMP- Test methods and results of thermoelectric modules

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    Forschung Burgenlan
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