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Igor Nevliudov, Valeriy Gurin, Dmytro Gurin
Pág. 57 - 61
The subject of the study is oxide-semiconductor capacitors, which are widely used in the manufacture of electronic equipment. The goal of the study is to determine the main causes of failures of oxide-semiconductor capacitors at the production and operat...
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Annalisa Paolone, Silvano Tosti, Alessia Santucci, Oriele Palumbo and Francesco Trequattrini
Pd?Ag alloys with compositions close to 23?25% Ag are considered as a benchmark for hydrogen permeability. They are used in small scale reactors for hydrogen separation and purification. Permeability and solubility are strictly mathematically correlated,...
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Oscar E. Coronado-Hernández, Vicente S. Fuertes-Miquel, Mohsen Besharat, Helena M. Ramos
Pág. 1 - 15
The emptying procedure is a common operation that engineers have to face in pipelines. This generates subatmospheric pressure caused by the expansion of air pockets, which can produce the collapse of the system depending on the conditions of the installa...
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Dimitrios Misirlis, Zinon Vlahostergios, Michael Flouros, Christina Salpingidou, Stefan Donnerhack, Apostolos Goulas and Kyros Yakinthos
In the framework of the European research project LEMCOTEC, a section was devoted to the further optimization of the recuperation system of the Intercooled Recuperated Aero engine (IRA engine) concept, of MTU Aero Engines AG. This concept is based on an ...
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Maria Filomena Camões and Bárbara Anes
Free acidity of aqueous solutions was initially defined in 1909 by Søren Peter Lauritz Sørensen as pH = -lgcH+ (c/mol·dm-3 or m/mol·kg-1 of the free hydrogen ions in solution, H+) soon (1910) was changed to pH = paH+ = -lgaH+, integrating the new concept...
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