Showing papers by "American University in Cairo published in 1982"
TL;DR: In this article, a finite element analysis and experimental techniques were used to study the plastic deformation and cracking of the θ phase in Al-16wt.%Cu alloy.
6 citations
TL;DR: In this paper, two Egyptian clays, namely Maadi clay and Alexandria-Cairo road clay, were selected as possible substitutes for an Indian clay and a Russian clay used industrially as bleaching agents for mineral lubricating oils.
3 citations
01 Jan 1982
TL;DR: A solar powered pump for irrigation was made available by the Catholic Relief Services in Cairo, for a field test in the village of Basaisa which is a locale for the project on Utilization of Solar Energy and Development of an Egyptian Village: an Integrated Field Project.
Abstract: A solar powered pump for irrigation was made available by the Catholic Relief Services in Cairo, for a field test in the village of Basaisa which is a locale for the project on Utilization of Solar Energy and Development of an Egyptian Village: an Integrated Field Project. The Basaisa Project is supported by the US National Science Foundation and the American University in Cairo. The theme of the project at Basaisa Village is that villagers must actively participate in all aspects of the project and that the acceptance of the new technology and their incorporation of it into their living pattern must come from them. The SEI-15 Sun pump has a 2-square-meter silicon solar cells array which convert sunlight directly into electricity. The metal framed array is positioned on a tralley and combined with a small verticial turbine pump with a permanent magnet d-c motor. The sun pump was transported to Basaisa on the evening of Thursday, May 3rd, 1979, explained to the farmers the same evening, demonstrated by villagers to visitors and villagers from nearby villages the following day, May 5th, and the Basaisa villagers started its actual operation in the field on the morning of Saturday May 6th, 1979. This paper reports on the operation of the sun pump on site and the farmers response, evaluation and recommendations.
3 citations
TL;DR: The effect of fast-neutron irradiation on the tensile properties and work hardening behavior of low-carbon Fe (0.02% C), Fe-4% Cr, Fe-9% Cr and Fe-8% Al were investigated up to a fluence of 1.8 × 10 18 n cm −2 (E >;1 MeV ) at an irradiation temperature of 40°C as mentioned in this paper.
3 citations
TL;DR: In this paper, the positions of bands are in good agreement with those calculated using the free-atom representation of the crystal-field theory including a Trees' correction, assuming a parent cubic-field microsymmetry.
Abstract: Electronic absorption spectra of MnII in sodium phosphate glasses have been measured in the energy range 15 000–42 000 cm−1 at room temperature and 80 K. The positions of bands are in good agreement with those calculated using the free-atom representation of the crystal-field theory including a Trees' correction, assuming a parent cubic-field microsymmetry. By analogy to known spectra of MnII, results indicate that MnII is coordinated to six oxygens and that there is distortion from a regular octahedral symmetry. With decreasing P2O5/Na2O molar ratio, there are slight decreases in the energies of the field-independent transitions. Spectra of FeIII in the same host glasses are briefly considered.
2 citations