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pro vyhledávání: '"A.M. Gadalla"'
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Autor:
H.W. Hennicke, A.M. Gadalla
Publikováno v:
Journal of Magnetism and Magnetic Materials. 1:144-152
The reactivity of hematite produced by pyrolysis of iron salts at various temperatures was assessed by surface area measurement, electron microscopy, crystal size and by reacting it with BaCO3 to form hexaferrite. The effect of heating rate, soaking
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4299c7b3820710d807afc45a4c4ef798
https://doi.org/10.1016/0304-8853(75)90161-4
https://doi.org/10.1016/0304-8853(75)90161-4
Autor:
A.M. Gadalla, A.N. Mahdy
Publikováno v:
Journal of Magnetism and Magnetic Materials. 1:326-329
A limiting density was reached at each sintering temperature. It was difficult to fix the operating mechanism during the initial stage of sintering. More than one mechanism overlap. At low temperatures surface diffusion predominates and at higher tem
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4784712010279626ea8b9042fcc3bde2
https://doi.org/10.1016/0304-8853(76)90059-7
https://doi.org/10.1016/0304-8853(76)90059-7
Publikováno v:
Surface Technology. 15:313-322
Two Egyptian clays, namely Maadi clay C(M) and Alexandria-Cairo road clay C(A), were selected as possible substitutes for an Indian clay and a Russian clay used industrially as bleaching agents for mineral lubricating oils. In view of the operational
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b80e6bc1f515385b74ba760d4117d3b1
https://doi.org/10.1016/0376-4583(82)90100-5
https://doi.org/10.1016/0376-4583(82)90100-5
Publikováno v:
Journal of Magnetism and Magnetic Materials. 1:241-250
The effect of additions on the densification of previously prepared stoichiometric barium hexaferrite, during the initial and intermediate stages of sintering, as well as on the coercivity and remanence were studied. The effect of non-stoichiometry,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::54fde86e82b92c1eedd9497a345664ae
https://doi.org/10.1016/0304-8853(76)90072-x
https://doi.org/10.1016/0304-8853(76)90072-x
Autor:
A.M. Gadalla, A.N. Mahdy
Publikováno v:
Journal of Magnetism and Magnetic Materials. 1:330-332
On forming the ferrite, several intermediate compounds richer in PbO were formed first. Firing results prove that the published phase diagram is in error. At each firing temperature, the shortest time required to prepare the ferrite was fixed and the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3cbf9c0d4d213b6ceb690daca34fc824
https://doi.org/10.1016/0304-8853(76)90060-3
https://doi.org/10.1016/0304-8853(76)90060-3
Publikováno v:
Journal of the Egyptian Mathematical Society, Vol 21, Iss 2, Pp 156-161 (2013)
In this article we introduce new classes of life distributions namely harmonic new better (worse) than used in expectation after specific age t0 HNBUE∗t0 (HNWUE∗t0). The closure properties under various reliability operations such as convolution,
Externí odkaz:
https://doaj.org/article/3f18b49aecb14c1c9c0feb7a729e63fb
Autor:
A.M. Gadallah
Publikováno v:
Journal of Statistical Theory and Applications (JSTA), Vol 15, Iss 2 (2016)
Based on the goodness of fit approach, a new test is presented for testing exponentiality against "exponential Better than Used in moment generating function ordering class" (EBUmgf). The critical values and the powers of this test are calculated. It
Externí odkaz:
https://doaj.org/article/0fdee0c28ece45f98389298e170736d2
Publikováno v:
Journal of Statistical Theory and Applications (JSTA), Vol 12, Iss 1 (2013)
In this article we introduce new classes of life distributions namely new better (worse) than used in expectation at specific age t0 NBUE-t0 (NWUE-t0) and harmonic new better (worse) than used in expectation at specific age t0 HNBUE-t0 (HNWUE-t0). Th
Externí odkaz:
https://doaj.org/article/7ed154bed5d542eda33ab56252566a0f
Akademický článek
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