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Reactive infiltration processing was investigated in the NiAl system using nickel-powder and nickel-wire preforms. Inhomogeneous microstructures were often obtained with powder preforms which had high surface-to-volume ratio, low permeability and irregular ...
The research and development of a durable, elec. rechargeable Zn/O2 battery in the PSI-BEW project at the Paul Scherrer Institute is described in a review with many refs. The first phase included the development of La0.6Ca0.4CoO3-activated bifunctional O2 ...
We measured by internal photoemission the conduction-band discontinuity Delta E(c) in p-In0.53Ga0.47As/n-InP heterojunctions with a Si delta layer (1x10(12) cm(-2)) inserted in InP at 10 Angstrom from the interface. The n-type Si delta doping induced an in ...
This paper develops a numerical technique for solving the problem of periodic ferroresonant overvoltages in a power system. The system is modeled as a set of nonlinear ordinary differential equations, whose periodical solutions are found by a numerical alg ...
This paper describes a 1 to 3.5 kWe hermetic scroll expander generator modified from a standard hermetic compressor, an organic Rankine cycle test facility built to test expanders up to 10 kWe and a set of experimental results using HFC 134a in the dry vap ...
A new industrial process for the electrolytic regeneration Mn2(SO4)3 is presented in which: a slurry of MnSO4/Mn2(SO4)3 in 55% H2SO4 was used as a carrier, the electrolyte is purified with an optimum mode before electrogeneration, and a new industrial elec ...
We show that optical reflectivity measurements can be used to evaluate the part of a NH, flux which reacts with a Ga-terminated GaN surface or with a Ga-flux simultaneously impinging on the surface, as in standard molecular beam epitaxy situation. At least ...
In vivo calcification of polyethylene and glycol diacrylate (PEG DA) hydrogels of mol. wt. (MW) 400, 1000, 4000, 6000 and 10,000 and polyethylene glycol tetraacrylate (PEG TA) of MW 18,500 was investigated using a rat s.c. model. This study was performed i ...
