Category Archives: Eng

Engineering

Topography Measurement for Monitoring Manufacturing Processes in Harsh Conditions

Author(s): Thomas Mueller, Andreas Poesch, Eduard Reithmeier ABSTRACT High precision manufacturing, e.g. milling and grinding, which have manufacturing tolerances in the range of <10 μm require microscopic measurement techniques for the inspection of the manufactured components. These measurement techniques are … Continue reading

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Constant-Stress Accelerated Degradation Life Test of an Organic Light-Emitting Diode Display under Violet Light

Author(s): François-Xavier Fortier, Sylvain G. Cloutier ABSTRACT The lifetime of commercial OLED display devices increases, so does the need for an accelerated lifetime testing method. The present work proposes a simple and accurate blackbox testing approach for commercial PMOLED display … Continue reading

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Real-Time Detection of Unstable Control Loop Behavior in a Feedback Active Noise Cancellation System for In-Ear Headphones

Author(s): Sven Höber, Christian Pape, Eduard Reithmeier ABSTRACT Active noise controls are used in a wide field of applications to cancel out unwanted surrounding noise. Control systems based on the feedback structure however have the disadvantage that they may become … Continue reading

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The Myth of the High-Efficiency External-Combustion Stirling Engine

Author(s): Paul H. Riley ABSTRACT The reported discrepancy between theory and experiment for external combustion Stirling engines is explained by the addition of thermal resistance of the combustion gasses to the standard Carnot model. In these cases, the Stirling engine … Continue reading

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Petroleum Patent Used Such Monitoring Technological Like Innovation Process of Drilling Fluids with Xanthan Gum —World Panorama

Author(s):Marco Antonio Martins de Oliveira, Cheila Gonçalves Mothé, Leandra Guimarães de Oliveira ABSTRACT This paper aims to discuss the importance of patenting and publishing as an instrument of incentive to technological innovation in the petroleum chemistry area. The present study … Continue reading

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Experimental Study on Ice Slurry Refrigeration System with Pre-Cooling Heat Exchanger

Author(s): Xukai Yang, Shengchun Liu ABSTRACT In the present study, the ice slurry refrigeration system with pre-cooling heat exchanger (ISSH) is studied experimentally to achieve the system performance, ice crystal formation time and the temperature of ice crystal formation. The … Continue reading

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Experimental Investigation of Fuel Quality and Contaminant Materials from Liquefied Petroleum Fuel

Author(s):Jae-Kon Kim, Kyong-Il Min, Eui Soon Yim ABSTRACT In this study, the quality characteristics and residue analysis in circulated LPG fuel were investigated experimentally in Korea. Quality characteristics in circulated LPG fuel were examined with samples of LPG in the … Continue reading

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Water Demand Management Can Help Jordan to Overcome its Water Shortage Crisis

Author:Nadhir Al-Ansari Jordan is considered as one of the poorest countries in its water resources. About 93% of the total precipitation which amounts to 8.2 billion m3 is lost by evaporation. The country is estimated below the poverty line by … Continue reading

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